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 | |
Johannes Berg | f1e3d55 | 2014-01-21 00:00:56 +0100 | [diff] [blame] | 94 | static const struct device_type reg_device_type = { |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 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 | |
Luis R. Rodriguez | 3ef121b | 2013-11-13 18:54:05 +0100 | [diff] [blame] | 123 | static const char *reg_dfs_region_str(enum nl80211_dfs_regions dfs_region) |
| 124 | { |
| 125 | switch (dfs_region) { |
| 126 | case NL80211_DFS_UNSET: |
| 127 | return "unset"; |
| 128 | case NL80211_DFS_FCC: |
| 129 | return "FCC"; |
| 130 | case NL80211_DFS_ETSI: |
| 131 | return "ETSI"; |
| 132 | case NL80211_DFS_JP: |
| 133 | return "JP"; |
| 134 | } |
| 135 | return "Unknown"; |
| 136 | } |
| 137 | |
Luis R. Rodriguez | 6c47479 | 2013-11-25 20:56:09 +0100 | [diff] [blame] | 138 | enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy) |
| 139 | { |
| 140 | const struct ieee80211_regdomain *regd = NULL; |
| 141 | const struct ieee80211_regdomain *wiphy_regd = NULL; |
| 142 | |
| 143 | regd = get_cfg80211_regdom(); |
| 144 | if (!wiphy) |
| 145 | goto out; |
| 146 | |
| 147 | wiphy_regd = get_wiphy_regdom(wiphy); |
| 148 | if (!wiphy_regd) |
| 149 | goto out; |
| 150 | |
| 151 | if (wiphy_regd->dfs_region == regd->dfs_region) |
| 152 | goto out; |
| 153 | |
| 154 | REG_DBG_PRINT("%s: device specific dfs_region " |
| 155 | "(%s) disagrees with cfg80211's " |
| 156 | "central dfs_region (%s)\n", |
| 157 | dev_name(&wiphy->dev), |
| 158 | reg_dfs_region_str(wiphy_regd->dfs_region), |
| 159 | reg_dfs_region_str(regd->dfs_region)); |
| 160 | |
| 161 | out: |
| 162 | return regd->dfs_region; |
| 163 | } |
| 164 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 165 | static void rcu_free_regdom(const struct ieee80211_regdomain *r) |
| 166 | { |
| 167 | if (!r) |
| 168 | return; |
| 169 | kfree_rcu((struct ieee80211_regdomain *)r, rcu_head); |
| 170 | } |
| 171 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 172 | static struct regulatory_request *get_last_request(void) |
| 173 | { |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 174 | return rcu_dereference_rtnl(last_request); |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 175 | } |
| 176 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 177 | /* Used to queue up regulatory hints */ |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 178 | static LIST_HEAD(reg_requests_list); |
| 179 | static spinlock_t reg_requests_lock; |
| 180 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 181 | /* Used to queue up beacon hints for review */ |
| 182 | static LIST_HEAD(reg_pending_beacons); |
| 183 | static spinlock_t reg_pending_beacons_lock; |
| 184 | |
| 185 | /* Used to keep track of processed beacon hints */ |
| 186 | static LIST_HEAD(reg_beacon_list); |
| 187 | |
| 188 | struct reg_beacon { |
| 189 | struct list_head list; |
| 190 | struct ieee80211_channel chan; |
| 191 | }; |
| 192 | |
Luis R. Rodriguez | f333a7a | 2010-11-17 21:46:07 -0800 | [diff] [blame] | 193 | static void reg_todo(struct work_struct *work); |
| 194 | static DECLARE_WORK(reg_work, reg_todo); |
| 195 | |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 196 | static void reg_timeout_work(struct work_struct *work); |
| 197 | static DECLARE_DELAYED_WORK(reg_timeout, reg_timeout_work); |
| 198 | |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 199 | /* We keep a static world regulatory domain in case of the absence of CRDA */ |
| 200 | static const struct ieee80211_regdomain world_regdom = { |
Vladimir Kondratiev | 90cdc6d | 2012-07-02 09:32:34 +0300 | [diff] [blame] | 201 | .n_reg_rules = 6, |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 202 | .alpha2 = "00", |
| 203 | .reg_rules = { |
Luis R. Rodriguez | 68798a6 | 2009-02-21 00:20:37 -0500 | [diff] [blame] | 204 | /* IEEE 802.11b/g, channels 1..11 */ |
| 205 | REG_RULE(2412-10, 2462+10, 40, 6, 20, 0), |
Johannes Berg | 43c771a | 2012-11-12 10:51:34 +0100 | [diff] [blame] | 206 | /* IEEE 802.11b/g, channels 12..13. */ |
| 207 | REG_RULE(2467-10, 2472+10, 40, 6, 20, |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 208 | NL80211_RRF_NO_IR), |
Luis R. Rodriguez | 611b6a8 | 2009-03-05 21:19:21 -0800 | [diff] [blame] | 209 | /* IEEE 802.11 channel 14 - Only JP enables |
| 210 | * this and for 802.11b only */ |
| 211 | REG_RULE(2484-10, 2484+10, 20, 6, 20, |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 212 | NL80211_RRF_NO_IR | |
Luis R. Rodriguez | 611b6a8 | 2009-03-05 21:19:21 -0800 | [diff] [blame] | 213 | NL80211_RRF_NO_OFDM), |
| 214 | /* IEEE 802.11a, channel 36..48 */ |
Johannes Berg | 131a19b | 2013-03-04 20:54:46 +0100 | [diff] [blame] | 215 | REG_RULE(5180-10, 5240+10, 160, 6, 20, |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 216 | NL80211_RRF_NO_IR), |
Luis R. Rodriguez | 3fc71f7 | 2009-02-21 00:20:38 -0500 | [diff] [blame] | 217 | |
Johannes Berg | 131a19b | 2013-03-04 20:54:46 +0100 | [diff] [blame] | 218 | /* IEEE 802.11a, channel 52..64 - DFS required */ |
| 219 | REG_RULE(5260-10, 5320+10, 160, 6, 20, |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 220 | NL80211_RRF_NO_IR | |
Johannes Berg | 131a19b | 2013-03-04 20:54:46 +0100 | [diff] [blame] | 221 | NL80211_RRF_DFS), |
| 222 | |
| 223 | /* IEEE 802.11a, channel 100..144 - DFS required */ |
| 224 | REG_RULE(5500-10, 5720+10, 160, 6, 20, |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 225 | NL80211_RRF_NO_IR | |
Johannes Berg | 131a19b | 2013-03-04 20:54:46 +0100 | [diff] [blame] | 226 | NL80211_RRF_DFS), |
Luis R. Rodriguez | 3fc71f7 | 2009-02-21 00:20:38 -0500 | [diff] [blame] | 227 | |
| 228 | /* IEEE 802.11a, channel 149..165 */ |
Johannes Berg | 8ab9d85 | 2012-12-03 22:09:22 +0100 | [diff] [blame] | 229 | REG_RULE(5745-10, 5825+10, 80, 6, 20, |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 230 | NL80211_RRF_NO_IR), |
Vladimir Kondratiev | 90cdc6d | 2012-07-02 09:32:34 +0300 | [diff] [blame] | 231 | |
| 232 | /* IEEE 802.11ad (60gHz), channels 1..3 */ |
| 233 | 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] | 234 | } |
| 235 | }; |
| 236 | |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 237 | /* protected by RTNL */ |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 238 | static const struct ieee80211_regdomain *cfg80211_world_regdom = |
| 239 | &world_regdom; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 240 | |
Luis R. Rodriguez | 6ee7d33 | 2009-03-20 23:53:06 -0400 | [diff] [blame] | 241 | static char *ieee80211_regdom = "00"; |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 242 | static char user_alpha2[2]; |
Luis R. Rodriguez | 6ee7d33 | 2009-03-20 23:53:06 -0400 | [diff] [blame] | 243 | |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 244 | module_param(ieee80211_regdom, charp, 0444); |
| 245 | MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain code"); |
| 246 | |
Luis R. Rodriguez | 5ad6ef5 | 2013-11-05 09:18:08 -0800 | [diff] [blame] | 247 | static void reg_kfree_last_request(void) |
| 248 | { |
| 249 | struct regulatory_request *lr; |
| 250 | |
| 251 | lr = get_last_request(); |
| 252 | |
| 253 | if (lr != &core_request_world && lr) |
| 254 | kfree_rcu(lr, rcu_head); |
| 255 | } |
| 256 | |
Luis R. Rodriguez | 05f1a3e | 2013-11-05 09:18:09 -0800 | [diff] [blame] | 257 | static void reg_update_last_request(struct regulatory_request *request) |
| 258 | { |
| 259 | reg_kfree_last_request(); |
| 260 | rcu_assign_pointer(last_request, request); |
| 261 | } |
| 262 | |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 263 | static void reset_regdomains(bool full_reset, |
| 264 | const struct ieee80211_regdomain *new_regdom) |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 265 | { |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 266 | const struct ieee80211_regdomain *r; |
| 267 | |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 268 | ASSERT_RTNL(); |
Johannes Berg | e8da2bb | 2012-12-03 23:00:08 +0100 | [diff] [blame] | 269 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 270 | r = get_cfg80211_regdom(); |
| 271 | |
Johannes Berg | 942b25c | 2008-09-15 11:26:47 +0200 | [diff] [blame] | 272 | /* avoid freeing static information or freeing something twice */ |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 273 | if (r == cfg80211_world_regdom) |
| 274 | r = NULL; |
Johannes Berg | 942b25c | 2008-09-15 11:26:47 +0200 | [diff] [blame] | 275 | if (cfg80211_world_regdom == &world_regdom) |
| 276 | cfg80211_world_regdom = NULL; |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 277 | if (r == &world_regdom) |
| 278 | r = NULL; |
Johannes Berg | 942b25c | 2008-09-15 11:26:47 +0200 | [diff] [blame] | 279 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 280 | rcu_free_regdom(r); |
| 281 | rcu_free_regdom(cfg80211_world_regdom); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 282 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 283 | cfg80211_world_regdom = &world_regdom; |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 284 | rcu_assign_pointer(cfg80211_regdomain, new_regdom); |
Luis R. Rodriguez | a042994 | 2011-11-28 16:47:15 -0500 | [diff] [blame] | 285 | |
| 286 | if (!full_reset) |
| 287 | return; |
| 288 | |
Luis R. Rodriguez | 05f1a3e | 2013-11-05 09:18:09 -0800 | [diff] [blame] | 289 | reg_update_last_request(&core_request_world); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 290 | } |
| 291 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 292 | /* |
| 293 | * Dynamic world regulatory domain requested by the wireless |
| 294 | * core upon initialization |
| 295 | */ |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 296 | static void update_world_regdomain(const struct ieee80211_regdomain *rd) |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 297 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 298 | struct regulatory_request *lr; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 299 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 300 | lr = get_last_request(); |
| 301 | |
| 302 | WARN_ON(!lr); |
Johannes Berg | e8da2bb | 2012-12-03 23:00:08 +0100 | [diff] [blame] | 303 | |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 304 | reset_regdomains(false, rd); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 305 | |
| 306 | cfg80211_world_regdom = rd; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 307 | } |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 308 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 309 | bool is_world_regdom(const char *alpha2) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 310 | { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 311 | if (!alpha2) |
| 312 | return false; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 313 | return alpha2[0] == '0' && alpha2[1] == '0'; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 314 | } |
| 315 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 316 | static bool is_alpha2_set(const char *alpha2) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 317 | { |
| 318 | if (!alpha2) |
| 319 | return false; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 320 | return alpha2[0] && alpha2[1]; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 321 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 322 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 323 | static bool is_unknown_alpha2(const char *alpha2) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 324 | { |
| 325 | if (!alpha2) |
| 326 | return false; |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 327 | /* |
| 328 | * Special case where regulatory domain was built by driver |
| 329 | * but a specific alpha2 cannot be determined |
| 330 | */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 331 | return alpha2[0] == '9' && alpha2[1] == '9'; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 332 | } |
| 333 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 334 | static bool is_intersected_alpha2(const char *alpha2) |
| 335 | { |
| 336 | if (!alpha2) |
| 337 | return false; |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 338 | /* |
| 339 | * Special case where regulatory domain is the |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 340 | * result of an intersection between two regulatory domain |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 341 | * structures |
| 342 | */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 343 | return alpha2[0] == '9' && alpha2[1] == '8'; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 344 | } |
| 345 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 346 | static bool is_an_alpha2(const char *alpha2) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 347 | { |
| 348 | if (!alpha2) |
| 349 | return false; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 350 | return isalpha(alpha2[0]) && isalpha(alpha2[1]); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 351 | } |
| 352 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 353 | 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] | 354 | { |
| 355 | if (!alpha2_x || !alpha2_y) |
| 356 | return false; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 357 | 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] | 358 | } |
| 359 | |
Luis R. Rodriguez | 69b1572 | 2009-02-21 00:04:33 -0500 | [diff] [blame] | 360 | static bool regdom_changes(const char *alpha2) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 361 | { |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 362 | const struct ieee80211_regdomain *r = get_cfg80211_regdom(); |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 363 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 364 | if (!r) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 365 | return true; |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 366 | return !alpha2_equal(r->alpha2, alpha2); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 367 | } |
| 368 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 369 | /* |
| 370 | * The NL80211_REGDOM_SET_BY_USER regdom alpha2 is cached, this lets |
| 371 | * you know if a valid regulatory hint with NL80211_REGDOM_SET_BY_USER |
| 372 | * has ever been issued. |
| 373 | */ |
| 374 | static bool is_user_regdom_saved(void) |
| 375 | { |
| 376 | if (user_alpha2[0] == '9' && user_alpha2[1] == '7') |
| 377 | return false; |
| 378 | |
| 379 | /* This would indicate a mistake on the design */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 380 | 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] | 381 | "Unexpected user alpha2: %c%c\n", |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 382 | user_alpha2[0], user_alpha2[1])) |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 383 | return false; |
| 384 | |
| 385 | return true; |
| 386 | } |
| 387 | |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 388 | static const struct ieee80211_regdomain * |
| 389 | reg_copy_regd(const struct ieee80211_regdomain *src_regd) |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 390 | { |
| 391 | struct ieee80211_regdomain *regd; |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 392 | int size_of_regd; |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 393 | unsigned int i; |
| 394 | |
Johannes Berg | 82f2085 | 2012-12-04 12:49:16 +0100 | [diff] [blame] | 395 | size_of_regd = |
| 396 | sizeof(struct ieee80211_regdomain) + |
| 397 | src_regd->n_reg_rules * sizeof(struct ieee80211_reg_rule); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 398 | |
| 399 | regd = kzalloc(size_of_regd, GFP_KERNEL); |
| 400 | if (!regd) |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 401 | return ERR_PTR(-ENOMEM); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 402 | |
| 403 | memcpy(regd, src_regd, sizeof(struct ieee80211_regdomain)); |
| 404 | |
| 405 | for (i = 0; i < src_regd->n_reg_rules; i++) |
| 406 | memcpy(®d->reg_rules[i], &src_regd->reg_rules[i], |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 407 | sizeof(struct ieee80211_reg_rule)); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 408 | |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 409 | return regd; |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 410 | } |
| 411 | |
| 412 | #ifdef CONFIG_CFG80211_INTERNAL_REGDB |
| 413 | struct reg_regdb_search_request { |
| 414 | char alpha2[2]; |
| 415 | struct list_head list; |
| 416 | }; |
| 417 | |
| 418 | static LIST_HEAD(reg_regdb_search_list); |
John W. Linville | 368d06f | 2010-03-16 15:40:59 -0400 | [diff] [blame] | 419 | static DEFINE_MUTEX(reg_regdb_search_mutex); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 420 | |
| 421 | static void reg_regdb_search(struct work_struct *work) |
| 422 | { |
| 423 | struct reg_regdb_search_request *request; |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 424 | const struct ieee80211_regdomain *curdom, *regdom = NULL; |
| 425 | int i; |
Luis R. Rodriguez | a85d0d7 | 2012-09-14 15:36:57 -0700 | [diff] [blame] | 426 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 427 | rtnl_lock(); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 428 | |
John W. Linville | 368d06f | 2010-03-16 15:40:59 -0400 | [diff] [blame] | 429 | mutex_lock(®_regdb_search_mutex); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 430 | while (!list_empty(®_regdb_search_list)) { |
| 431 | request = list_first_entry(®_regdb_search_list, |
| 432 | struct reg_regdb_search_request, |
| 433 | list); |
| 434 | list_del(&request->list); |
| 435 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 436 | for (i = 0; i < reg_regdb_size; i++) { |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 437 | curdom = reg_regdb[i]; |
| 438 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 439 | if (alpha2_equal(request->alpha2, curdom->alpha2)) { |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 440 | regdom = reg_copy_regd(curdom); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 441 | break; |
| 442 | } |
| 443 | } |
| 444 | |
| 445 | kfree(request); |
| 446 | } |
John W. Linville | 368d06f | 2010-03-16 15:40:59 -0400 | [diff] [blame] | 447 | mutex_unlock(®_regdb_search_mutex); |
Luis R. Rodriguez | a85d0d7 | 2012-09-14 15:36:57 -0700 | [diff] [blame] | 448 | |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 449 | if (!IS_ERR_OR_NULL(regdom)) |
Luis R. Rodriguez | a85d0d7 | 2012-09-14 15:36:57 -0700 | [diff] [blame] | 450 | set_regdom(regdom); |
| 451 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 452 | rtnl_unlock(); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 453 | } |
| 454 | |
| 455 | static DECLARE_WORK(reg_regdb_work, reg_regdb_search); |
| 456 | |
| 457 | static void reg_regdb_query(const char *alpha2) |
| 458 | { |
| 459 | struct reg_regdb_search_request *request; |
| 460 | |
| 461 | if (!alpha2) |
| 462 | return; |
| 463 | |
| 464 | request = kzalloc(sizeof(struct reg_regdb_search_request), GFP_KERNEL); |
| 465 | if (!request) |
| 466 | return; |
| 467 | |
| 468 | memcpy(request->alpha2, alpha2, 2); |
| 469 | |
John W. Linville | 368d06f | 2010-03-16 15:40:59 -0400 | [diff] [blame] | 470 | mutex_lock(®_regdb_search_mutex); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 471 | list_add_tail(&request->list, ®_regdb_search_list); |
John W. Linville | 368d06f | 2010-03-16 15:40:59 -0400 | [diff] [blame] | 472 | mutex_unlock(®_regdb_search_mutex); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 473 | |
| 474 | schedule_work(®_regdb_work); |
| 475 | } |
Luis R. Rodriguez | 80007ef | 2012-03-23 07:23:31 -0700 | [diff] [blame] | 476 | |
| 477 | /* Feel free to add any other sanity checks here */ |
| 478 | static void reg_regdb_size_check(void) |
| 479 | { |
| 480 | /* We should ideally BUILD_BUG_ON() but then random builds would fail */ |
| 481 | WARN_ONCE(!reg_regdb_size, "db.txt is empty, you should update it..."); |
| 482 | } |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 483 | #else |
Luis R. Rodriguez | 80007ef | 2012-03-23 07:23:31 -0700 | [diff] [blame] | 484 | static inline void reg_regdb_size_check(void) {} |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 485 | static inline void reg_regdb_query(const char *alpha2) {} |
| 486 | #endif /* CONFIG_CFG80211_INTERNAL_REGDB */ |
| 487 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 488 | /* |
| 489 | * 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] | 490 | * basis in userspace. Country information is filled in by |
| 491 | * reg_device_uevent |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 492 | */ |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 493 | static int call_crda(const char *alpha2) |
| 494 | { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 495 | if (!is_world_regdom((char *) alpha2)) |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 496 | pr_info("Calling CRDA for country: %c%c\n", |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 497 | alpha2[0], alpha2[1]); |
| 498 | else |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 499 | pr_info("Calling CRDA to update world regulatory domain\n"); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 500 | |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 501 | /* query internal regulatory database (if it exists) */ |
| 502 | reg_regdb_query(alpha2); |
| 503 | |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 504 | return kobject_uevent(®_pdev->dev.kobj, KOBJ_CHANGE); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 505 | } |
| 506 | |
Luis R. Rodriguez | fe6631f | 2013-11-05 09:18:10 -0800 | [diff] [blame] | 507 | static enum reg_request_treatment |
| 508 | reg_call_crda(struct regulatory_request *request) |
| 509 | { |
| 510 | if (call_crda(request->alpha2)) |
| 511 | return REG_REQ_IGNORE; |
| 512 | return REG_REQ_OK; |
| 513 | } |
| 514 | |
Luis R. Rodriguez | e438768 | 2013-11-05 09:18:01 -0800 | [diff] [blame] | 515 | bool reg_is_valid_request(const char *alpha2) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 516 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 517 | struct regulatory_request *lr = get_last_request(); |
Luis R. Rodriguez | 61405e9 | 2009-05-13 17:04:41 -0400 | [diff] [blame] | 518 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 519 | if (!lr || lr->processed) |
Johannes Berg | f6037d0 | 2008-10-21 11:01:33 +0200 | [diff] [blame] | 520 | return false; |
| 521 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 522 | return alpha2_equal(lr->alpha2, alpha2); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 523 | } |
| 524 | |
Janusz Dziedzic | e3961af | 2014-01-25 11:24:11 +0100 | [diff] [blame^] | 525 | static const struct ieee80211_regdomain *reg_get_regdomain(struct wiphy *wiphy) |
| 526 | { |
| 527 | struct regulatory_request *lr = get_last_request(); |
| 528 | |
| 529 | /* |
| 530 | * Follow the driver's regulatory domain, if present, unless a country |
| 531 | * IE has been processed or a user wants to help complaince further |
| 532 | */ |
| 533 | if (lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE && |
| 534 | lr->initiator != NL80211_REGDOM_SET_BY_USER && |
| 535 | wiphy->regd) |
| 536 | return get_wiphy_regdom(wiphy); |
| 537 | |
| 538 | return get_cfg80211_regdom(); |
| 539 | } |
| 540 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 541 | /* Sanity check on a regulatory rule */ |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 542 | 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] | 543 | { |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 544 | const struct ieee80211_freq_range *freq_range = &rule->freq_range; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 545 | u32 freq_diff; |
| 546 | |
Luis R. Rodriguez | 91e9900 | 2008-11-12 14:21:55 -0800 | [diff] [blame] | 547 | 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] | 548 | return false; |
| 549 | |
| 550 | if (freq_range->start_freq_khz > freq_range->end_freq_khz) |
| 551 | return false; |
| 552 | |
| 553 | freq_diff = freq_range->end_freq_khz - freq_range->start_freq_khz; |
| 554 | |
Roel Kluin | bd05f28 | 2009-03-03 22:55:21 +0100 | [diff] [blame] | 555 | if (freq_range->end_freq_khz <= freq_range->start_freq_khz || |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 556 | freq_range->max_bandwidth_khz > freq_diff) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 557 | return false; |
| 558 | |
| 559 | return true; |
| 560 | } |
| 561 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 562 | static bool is_valid_rd(const struct ieee80211_regdomain *rd) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 563 | { |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 564 | const struct ieee80211_reg_rule *reg_rule = NULL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 565 | unsigned int i; |
| 566 | |
| 567 | if (!rd->n_reg_rules) |
| 568 | return false; |
| 569 | |
Luis R. Rodriguez | 88dc1c3 | 2008-11-12 14:22:01 -0800 | [diff] [blame] | 570 | if (WARN_ON(rd->n_reg_rules > NL80211_MAX_SUPP_REG_RULES)) |
| 571 | return false; |
| 572 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 573 | for (i = 0; i < rd->n_reg_rules; i++) { |
| 574 | reg_rule = &rd->reg_rules[i]; |
| 575 | if (!is_valid_reg_rule(reg_rule)) |
| 576 | return false; |
| 577 | } |
| 578 | |
| 579 | return true; |
| 580 | } |
| 581 | |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 582 | 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] | 583 | u32 center_freq_khz, u32 bw_khz) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 584 | { |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 585 | u32 start_freq_khz, end_freq_khz; |
| 586 | |
| 587 | start_freq_khz = center_freq_khz - (bw_khz/2); |
| 588 | end_freq_khz = center_freq_khz + (bw_khz/2); |
| 589 | |
| 590 | if (start_freq_khz >= freq_range->start_freq_khz && |
| 591 | end_freq_khz <= freq_range->end_freq_khz) |
| 592 | return true; |
| 593 | |
| 594 | return false; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 595 | } |
| 596 | |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 597 | /** |
| 598 | * freq_in_rule_band - tells us if a frequency is in a frequency band |
| 599 | * @freq_range: frequency rule we want to query |
| 600 | * @freq_khz: frequency we are inquiring about |
| 601 | * |
| 602 | * This lets us know if a specific frequency rule is or is not relevant to |
| 603 | * a specific frequency's band. Bands are device specific and artificial |
Vladimir Kondratiev | 64629b9 | 2012-09-23 09:49:54 +0200 | [diff] [blame] | 604 | * definitions (the "2.4 GHz band", the "5 GHz band" and the "60GHz band"), |
| 605 | * however it is safe for now to assume that a frequency rule should not be |
| 606 | * part of a frequency's band if the start freq or end freq are off by more |
| 607 | * than 2 GHz for the 2.4 and 5 GHz bands, and by more than 10 GHz for the |
| 608 | * 60 GHz band. |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 609 | * This resolution can be lowered and should be considered as we add |
| 610 | * regulatory rule support for other "bands". |
| 611 | **/ |
| 612 | 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] | 613 | u32 freq_khz) |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 614 | { |
| 615 | #define ONE_GHZ_IN_KHZ 1000000 |
Vladimir Kondratiev | 64629b9 | 2012-09-23 09:49:54 +0200 | [diff] [blame] | 616 | /* |
| 617 | * From 802.11ad: directional multi-gigabit (DMG): |
| 618 | * Pertaining to operation in a frequency band containing a channel |
| 619 | * with the Channel starting frequency above 45 GHz. |
| 620 | */ |
| 621 | u32 limit = freq_khz > 45 * ONE_GHZ_IN_KHZ ? |
| 622 | 10 * ONE_GHZ_IN_KHZ : 2 * ONE_GHZ_IN_KHZ; |
| 623 | if (abs(freq_khz - freq_range->start_freq_khz) <= limit) |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 624 | return true; |
Vladimir Kondratiev | 64629b9 | 2012-09-23 09:49:54 +0200 | [diff] [blame] | 625 | if (abs(freq_khz - freq_range->end_freq_khz) <= limit) |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 626 | return true; |
| 627 | return false; |
| 628 | #undef ONE_GHZ_IN_KHZ |
| 629 | } |
| 630 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 631 | /* |
Luis R. Rodriguez | adbfb05 | 2013-11-13 18:54:03 +0100 | [diff] [blame] | 632 | * Later on we can perhaps use the more restrictive DFS |
| 633 | * region but we don't have information for that yet so |
| 634 | * for now simply disallow conflicts. |
| 635 | */ |
| 636 | static enum nl80211_dfs_regions |
| 637 | reg_intersect_dfs_region(const enum nl80211_dfs_regions dfs_region1, |
| 638 | const enum nl80211_dfs_regions dfs_region2) |
| 639 | { |
| 640 | if (dfs_region1 != dfs_region2) |
| 641 | return NL80211_DFS_UNSET; |
| 642 | return dfs_region1; |
| 643 | } |
| 644 | |
| 645 | /* |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 646 | * Helper for regdom_intersect(), this does the real |
| 647 | * mathematical intersection fun |
| 648 | */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 649 | static int reg_rules_intersect(const struct ieee80211_reg_rule *rule1, |
| 650 | const struct ieee80211_reg_rule *rule2, |
| 651 | struct ieee80211_reg_rule *intersected_rule) |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 652 | { |
| 653 | const struct ieee80211_freq_range *freq_range1, *freq_range2; |
| 654 | struct ieee80211_freq_range *freq_range; |
| 655 | const struct ieee80211_power_rule *power_rule1, *power_rule2; |
| 656 | struct ieee80211_power_rule *power_rule; |
| 657 | u32 freq_diff; |
| 658 | |
| 659 | freq_range1 = &rule1->freq_range; |
| 660 | freq_range2 = &rule2->freq_range; |
| 661 | freq_range = &intersected_rule->freq_range; |
| 662 | |
| 663 | power_rule1 = &rule1->power_rule; |
| 664 | power_rule2 = &rule2->power_rule; |
| 665 | power_rule = &intersected_rule->power_rule; |
| 666 | |
| 667 | freq_range->start_freq_khz = max(freq_range1->start_freq_khz, |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 668 | freq_range2->start_freq_khz); |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 669 | freq_range->end_freq_khz = min(freq_range1->end_freq_khz, |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 670 | freq_range2->end_freq_khz); |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 671 | freq_range->max_bandwidth_khz = min(freq_range1->max_bandwidth_khz, |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 672 | freq_range2->max_bandwidth_khz); |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 673 | |
| 674 | freq_diff = freq_range->end_freq_khz - freq_range->start_freq_khz; |
| 675 | if (freq_range->max_bandwidth_khz > freq_diff) |
| 676 | freq_range->max_bandwidth_khz = freq_diff; |
| 677 | |
| 678 | power_rule->max_eirp = min(power_rule1->max_eirp, |
| 679 | power_rule2->max_eirp); |
| 680 | power_rule->max_antenna_gain = min(power_rule1->max_antenna_gain, |
| 681 | power_rule2->max_antenna_gain); |
| 682 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 683 | intersected_rule->flags = rule1->flags | rule2->flags; |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 684 | |
| 685 | if (!is_valid_reg_rule(intersected_rule)) |
| 686 | return -EINVAL; |
| 687 | |
| 688 | return 0; |
| 689 | } |
| 690 | |
| 691 | /** |
| 692 | * regdom_intersect - do the intersection between two regulatory domains |
| 693 | * @rd1: first regulatory domain |
| 694 | * @rd2: second regulatory domain |
| 695 | * |
| 696 | * Use this function to get the intersection between two regulatory domains. |
| 697 | * Once completed we will mark the alpha2 for the rd as intersected, "98", |
| 698 | * as no one single alpha2 can represent this regulatory domain. |
| 699 | * |
| 700 | * Returns a pointer to the regulatory domain structure which will hold the |
| 701 | * resulting intersection of rules between rd1 and rd2. We will |
| 702 | * kzalloc() this structure for you. |
| 703 | */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 704 | static struct ieee80211_regdomain * |
| 705 | regdom_intersect(const struct ieee80211_regdomain *rd1, |
| 706 | const struct ieee80211_regdomain *rd2) |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 707 | { |
| 708 | int r, size_of_regd; |
| 709 | unsigned int x, y; |
| 710 | unsigned int num_rules = 0, rule_idx = 0; |
| 711 | const struct ieee80211_reg_rule *rule1, *rule2; |
| 712 | struct ieee80211_reg_rule *intersected_rule; |
| 713 | struct ieee80211_regdomain *rd; |
| 714 | /* This is just a dummy holder to help us count */ |
Johannes Berg | 74f53cd | 2012-12-06 17:26:17 +0100 | [diff] [blame] | 715 | struct ieee80211_reg_rule dummy_rule; |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 716 | |
| 717 | if (!rd1 || !rd2) |
| 718 | return NULL; |
| 719 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 720 | /* |
| 721 | * 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] | 722 | * build them. This is to so we can malloc() and free() a |
| 723 | * regdomain once. The reason we use reg_rules_intersect() here |
| 724 | * 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] | 725 | * All rules that do check out OK are valid. |
| 726 | */ |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 727 | |
| 728 | for (x = 0; x < rd1->n_reg_rules; x++) { |
| 729 | rule1 = &rd1->reg_rules[x]; |
| 730 | for (y = 0; y < rd2->n_reg_rules; y++) { |
| 731 | rule2 = &rd2->reg_rules[y]; |
Johannes Berg | 74f53cd | 2012-12-06 17:26:17 +0100 | [diff] [blame] | 732 | if (!reg_rules_intersect(rule1, rule2, &dummy_rule)) |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 733 | num_rules++; |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 734 | } |
| 735 | } |
| 736 | |
| 737 | if (!num_rules) |
| 738 | return NULL; |
| 739 | |
| 740 | size_of_regd = sizeof(struct ieee80211_regdomain) + |
Johannes Berg | 82f2085 | 2012-12-04 12:49:16 +0100 | [diff] [blame] | 741 | num_rules * sizeof(struct ieee80211_reg_rule); |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 742 | |
| 743 | rd = kzalloc(size_of_regd, GFP_KERNEL); |
| 744 | if (!rd) |
| 745 | return NULL; |
| 746 | |
Johannes Berg | 8a57fff | 2012-12-06 17:03:17 +0100 | [diff] [blame] | 747 | 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] | 748 | rule1 = &rd1->reg_rules[x]; |
Johannes Berg | 8a57fff | 2012-12-06 17:03:17 +0100 | [diff] [blame] | 749 | 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] | 750 | rule2 = &rd2->reg_rules[y]; |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 751 | /* |
| 752 | * This time around instead of using the stack lets |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 753 | * write to the target rule directly saving ourselves |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 754 | * a memcpy() |
| 755 | */ |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 756 | intersected_rule = &rd->reg_rules[rule_idx]; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 757 | r = reg_rules_intersect(rule1, rule2, intersected_rule); |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 758 | /* |
| 759 | * No need to memset here the intersected rule here as |
| 760 | * we're not using the stack anymore |
| 761 | */ |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 762 | if (r) |
| 763 | continue; |
| 764 | rule_idx++; |
| 765 | } |
| 766 | } |
| 767 | |
| 768 | if (rule_idx != num_rules) { |
| 769 | kfree(rd); |
| 770 | return NULL; |
| 771 | } |
| 772 | |
| 773 | rd->n_reg_rules = num_rules; |
| 774 | rd->alpha2[0] = '9'; |
| 775 | rd->alpha2[1] = '8'; |
Luis R. Rodriguez | adbfb05 | 2013-11-13 18:54:03 +0100 | [diff] [blame] | 776 | rd->dfs_region = reg_intersect_dfs_region(rd1->dfs_region, |
| 777 | rd2->dfs_region); |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 778 | |
| 779 | return rd; |
| 780 | } |
| 781 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 782 | /* |
| 783 | * XXX: add support for the rest of enum nl80211_reg_rule_flags, we may |
| 784 | * want to just have the channel structure use these |
| 785 | */ |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 786 | static u32 map_regdom_flags(u32 rd_flags) |
| 787 | { |
| 788 | u32 channel_flags = 0; |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 789 | if (rd_flags & NL80211_RRF_NO_IR_ALL) |
| 790 | channel_flags |= IEEE80211_CHAN_NO_IR; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 791 | if (rd_flags & NL80211_RRF_DFS) |
| 792 | channel_flags |= IEEE80211_CHAN_RADAR; |
Seth Forshee | 03f6b08 | 2012-08-01 15:58:42 -0500 | [diff] [blame] | 793 | if (rd_flags & NL80211_RRF_NO_OFDM) |
| 794 | channel_flags |= IEEE80211_CHAN_NO_OFDM; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 795 | return channel_flags; |
| 796 | } |
| 797 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 798 | static const struct ieee80211_reg_rule * |
| 799 | freq_reg_info_regd(struct wiphy *wiphy, u32 center_freq, |
| 800 | const struct ieee80211_regdomain *regd) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 801 | { |
| 802 | int i; |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 803 | bool band_rule_found = false; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 804 | bool bw_fits = false; |
| 805 | |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 806 | if (!regd) |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 807 | return ERR_PTR(-EINVAL); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 808 | |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 809 | for (i = 0; i < regd->n_reg_rules; i++) { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 810 | const struct ieee80211_reg_rule *rr; |
| 811 | const struct ieee80211_freq_range *fr = NULL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 812 | |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 813 | rr = ®d->reg_rules[i]; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 814 | fr = &rr->freq_range; |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 815 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 816 | /* |
| 817 | * We only need to know if one frequency rule was |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 818 | * was in center_freq's band, that's enough, so lets |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 819 | * not overwrite it once found |
| 820 | */ |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 821 | if (!band_rule_found) |
| 822 | band_rule_found = freq_in_rule_band(fr, center_freq); |
| 823 | |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 824 | 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] | 825 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 826 | if (band_rule_found && bw_fits) |
| 827 | return rr; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 828 | } |
| 829 | |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 830 | if (!band_rule_found) |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 831 | return ERR_PTR(-ERANGE); |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 832 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 833 | return ERR_PTR(-EINVAL); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 834 | } |
| 835 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 836 | const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy, |
| 837 | u32 center_freq) |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 838 | { |
Johannes Berg | 5d885b9 | 2012-12-04 00:14:17 +0100 | [diff] [blame] | 839 | const struct ieee80211_regdomain *regd; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 840 | |
Janusz Dziedzic | e3961af | 2014-01-25 11:24:11 +0100 | [diff] [blame^] | 841 | regd = reg_get_regdomain(wiphy); |
Johannes Berg | 5d885b9 | 2012-12-04 00:14:17 +0100 | [diff] [blame] | 842 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 843 | return freq_reg_info_regd(wiphy, center_freq, regd); |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 844 | } |
John W. Linville | 4f366c5 | 2010-07-15 14:57:33 -0400 | [diff] [blame] | 845 | EXPORT_SYMBOL(freq_reg_info); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 846 | |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 847 | const char *reg_initiator_name(enum nl80211_reg_initiator initiator) |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 848 | { |
| 849 | switch (initiator) { |
| 850 | case NL80211_REGDOM_SET_BY_CORE: |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 851 | return "core"; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 852 | case NL80211_REGDOM_SET_BY_USER: |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 853 | return "user"; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 854 | case NL80211_REGDOM_SET_BY_DRIVER: |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 855 | return "driver"; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 856 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 857 | return "country IE"; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 858 | default: |
| 859 | WARN_ON(1); |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 860 | return "bug"; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 861 | } |
| 862 | } |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 863 | EXPORT_SYMBOL(reg_initiator_name); |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 864 | |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 865 | #ifdef CONFIG_CFG80211_REG_DEBUG |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 866 | static void chan_reg_rule_print_dbg(struct ieee80211_channel *chan, |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 867 | const struct ieee80211_reg_rule *reg_rule) |
| 868 | { |
| 869 | const struct ieee80211_power_rule *power_rule; |
| 870 | const struct ieee80211_freq_range *freq_range; |
| 871 | char max_antenna_gain[32]; |
| 872 | |
| 873 | power_rule = ®_rule->power_rule; |
| 874 | freq_range = ®_rule->freq_range; |
| 875 | |
| 876 | if (!power_rule->max_antenna_gain) |
| 877 | snprintf(max_antenna_gain, 32, "N/A"); |
| 878 | else |
| 879 | snprintf(max_antenna_gain, 32, "%d", power_rule->max_antenna_gain); |
| 880 | |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 881 | REG_DBG_PRINT("Updating information on frequency %d MHz with regulatory rule:\n", |
| 882 | chan->center_freq); |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 883 | |
Pavel Roskin | 56e6786 | 2011-09-01 11:54:12 -0400 | [diff] [blame] | 884 | 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] | 885 | freq_range->start_freq_khz, freq_range->end_freq_khz, |
| 886 | freq_range->max_bandwidth_khz, max_antenna_gain, |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 887 | power_rule->max_eirp); |
| 888 | } |
| 889 | #else |
| 890 | static void chan_reg_rule_print_dbg(struct ieee80211_channel *chan, |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 891 | const struct ieee80211_reg_rule *reg_rule) |
| 892 | { |
| 893 | return; |
| 894 | } |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 895 | #endif |
| 896 | |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 897 | /* |
| 898 | * Note that right now we assume the desired channel bandwidth |
| 899 | * is always 20 MHz for each individual channel (HT40 uses 20 MHz |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 900 | * per channel, the primary and the extension channel). |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 901 | */ |
Luis R. Rodriguez | 7ca43d0 | 2010-10-20 10:18:53 -0700 | [diff] [blame] | 902 | static void handle_channel(struct wiphy *wiphy, |
| 903 | enum nl80211_reg_initiator initiator, |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 904 | struct ieee80211_channel *chan) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 905 | { |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 906 | u32 flags, bw_flags = 0; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 907 | const struct ieee80211_reg_rule *reg_rule = NULL; |
| 908 | const struct ieee80211_power_rule *power_rule = NULL; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 909 | const struct ieee80211_freq_range *freq_range = NULL; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 910 | struct wiphy *request_wiphy = NULL; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 911 | struct regulatory_request *lr = get_last_request(); |
Luis R. Rodriguez | a92a3ce | 2009-01-07 17:43:33 -0800 | [diff] [blame] | 912 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 913 | request_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx); |
Luis R. Rodriguez | a92a3ce | 2009-01-07 17:43:33 -0800 | [diff] [blame] | 914 | |
| 915 | flags = chan->orig_flags; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 916 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 917 | reg_rule = freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq)); |
| 918 | if (IS_ERR(reg_rule)) { |
Luis R. Rodriguez | ca4ffe8 | 2010-10-20 10:18:55 -0700 | [diff] [blame] | 919 | /* |
| 920 | * We will disable all channels that do not match our |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 921 | * received regulatory rule unless the hint is coming |
Luis R. Rodriguez | ca4ffe8 | 2010-10-20 10:18:55 -0700 | [diff] [blame] | 922 | * from a Country IE and the Country IE had no information |
| 923 | * about a band. The IEEE 802.11 spec allows for an AP |
| 924 | * to send only a subset of the regulatory rules allowed, |
| 925 | * so an AP in the US that only supports 2.4 GHz may only send |
| 926 | * a country IE with information for the 2.4 GHz band |
| 927 | * while 5 GHz is still supported. |
| 928 | */ |
| 929 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 930 | PTR_ERR(reg_rule) == -ERANGE) |
Luis R. Rodriguez | ca4ffe8 | 2010-10-20 10:18:55 -0700 | [diff] [blame] | 931 | return; |
| 932 | |
Luis R. Rodriguez | cc493e4f | 2013-11-06 17:54:44 +0100 | [diff] [blame] | 933 | if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER && |
| 934 | request_wiphy && request_wiphy == wiphy && |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 935 | request_wiphy->regulatory_flags & REGULATORY_STRICT_REG) { |
Luis R. Rodriguez | cc493e4f | 2013-11-06 17:54:44 +0100 | [diff] [blame] | 936 | REG_DBG_PRINT("Disabling freq %d MHz for good\n", |
| 937 | chan->center_freq); |
| 938 | chan->orig_flags |= IEEE80211_CHAN_DISABLED; |
| 939 | chan->flags = chan->orig_flags; |
| 940 | } else { |
| 941 | REG_DBG_PRINT("Disabling freq %d MHz\n", |
| 942 | chan->center_freq); |
| 943 | chan->flags |= IEEE80211_CHAN_DISABLED; |
| 944 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 945 | return; |
Luis R. Rodriguez | ca4ffe8 | 2010-10-20 10:18:55 -0700 | [diff] [blame] | 946 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 947 | |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 948 | chan_reg_rule_print_dbg(chan, reg_rule); |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 949 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 950 | power_rule = ®_rule->power_rule; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 951 | freq_range = ®_rule->freq_range; |
| 952 | |
| 953 | if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(40)) |
| 954 | bw_flags = IEEE80211_CHAN_NO_HT40; |
Johannes Berg | c7a6ee2 | 2012-12-12 17:50:39 +0100 | [diff] [blame] | 955 | if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(80)) |
| 956 | bw_flags |= IEEE80211_CHAN_NO_80MHZ; |
| 957 | if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(160)) |
| 958 | bw_flags |= IEEE80211_CHAN_NO_160MHZ; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 959 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 960 | if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER && |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 961 | request_wiphy && request_wiphy == wiphy && |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 962 | request_wiphy->regulatory_flags & REGULATORY_STRICT_REG) { |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 963 | /* |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 964 | * This guarantees the driver's requested regulatory domain |
Luis R. Rodriguez | f976376 | 2009-01-22 15:05:52 -0800 | [diff] [blame] | 965 | * will always be used as a base for further regulatory |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 966 | * settings |
| 967 | */ |
Luis R. Rodriguez | f976376 | 2009-01-22 15:05:52 -0800 | [diff] [blame] | 968 | chan->flags = chan->orig_flags = |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 969 | map_regdom_flags(reg_rule->flags) | bw_flags; |
Luis R. Rodriguez | f976376 | 2009-01-22 15:05:52 -0800 | [diff] [blame] | 970 | chan->max_antenna_gain = chan->orig_mag = |
| 971 | (int) MBI_TO_DBI(power_rule->max_antenna_gain); |
Felix Fietkau | 279f0f5 | 2012-10-17 13:56:20 +0200 | [diff] [blame] | 972 | chan->max_reg_power = chan->max_power = chan->orig_mpwr = |
Luis R. Rodriguez | f976376 | 2009-01-22 15:05:52 -0800 | [diff] [blame] | 973 | (int) MBM_TO_DBM(power_rule->max_eirp); |
| 974 | return; |
| 975 | } |
| 976 | |
Simon Wunderlich | 04f3904 | 2013-02-08 18:16:19 +0100 | [diff] [blame] | 977 | chan->dfs_state = NL80211_DFS_USABLE; |
| 978 | chan->dfs_state_entered = jiffies; |
| 979 | |
Rajkumar Manoharan | aa3d7ee | 2011-09-14 14:28:17 +0530 | [diff] [blame] | 980 | chan->beacon_found = false; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 981 | chan->flags = flags | bw_flags | map_regdom_flags(reg_rule->flags); |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 982 | chan->max_antenna_gain = |
| 983 | min_t(int, chan->orig_mag, |
| 984 | MBI_TO_DBI(power_rule->max_antenna_gain)); |
Hong Wu | eccc068 | 2012-01-11 20:33:39 +0200 | [diff] [blame] | 985 | chan->max_reg_power = (int) MBM_TO_DBM(power_rule->max_eirp); |
Stanislaw Gruszka | 5e31fc0 | 2012-07-24 08:35:39 +0200 | [diff] [blame] | 986 | if (chan->orig_mpwr) { |
| 987 | /* |
Luis R. Rodriguez | a09a85a | 2013-11-11 22:15:30 +0100 | [diff] [blame] | 988 | * Devices that use REGULATORY_COUNTRY_IE_FOLLOW_POWER |
| 989 | * will always follow the passed country IE power settings. |
Stanislaw Gruszka | 5e31fc0 | 2012-07-24 08:35:39 +0200 | [diff] [blame] | 990 | */ |
| 991 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && |
Luis R. Rodriguez | a09a85a | 2013-11-11 22:15:30 +0100 | [diff] [blame] | 992 | wiphy->regulatory_flags & REGULATORY_COUNTRY_IE_FOLLOW_POWER) |
Stanislaw Gruszka | 5e31fc0 | 2012-07-24 08:35:39 +0200 | [diff] [blame] | 993 | chan->max_power = chan->max_reg_power; |
| 994 | else |
| 995 | chan->max_power = min(chan->orig_mpwr, |
| 996 | chan->max_reg_power); |
| 997 | } else |
| 998 | chan->max_power = chan->max_reg_power; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 999 | } |
| 1000 | |
Luis R. Rodriguez | 7ca43d0 | 2010-10-20 10:18:53 -0700 | [diff] [blame] | 1001 | static void handle_band(struct wiphy *wiphy, |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1002 | enum nl80211_reg_initiator initiator, |
| 1003 | struct ieee80211_supported_band *sband) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1004 | { |
Luis R. Rodriguez | a92a3ce | 2009-01-07 17:43:33 -0800 | [diff] [blame] | 1005 | unsigned int i; |
Luis R. Rodriguez | a92a3ce | 2009-01-07 17:43:33 -0800 | [diff] [blame] | 1006 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1007 | if (!sband) |
| 1008 | return; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1009 | |
| 1010 | for (i = 0; i < sband->n_channels; i++) |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1011 | handle_channel(wiphy, initiator, &sband->channels[i]); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1012 | } |
| 1013 | |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1014 | static bool reg_request_cell_base(struct regulatory_request *request) |
| 1015 | { |
| 1016 | if (request->initiator != NL80211_REGDOM_SET_BY_USER) |
| 1017 | return false; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1018 | 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] | 1019 | } |
| 1020 | |
| 1021 | bool reg_last_request_cell_base(void) |
| 1022 | { |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 1023 | return reg_request_cell_base(get_last_request()); |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1024 | } |
| 1025 | |
| 1026 | #ifdef CONFIG_CFG80211_CERTIFICATION_ONUS |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1027 | /* Core specific check */ |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1028 | static enum reg_request_treatment |
| 1029 | reg_ignore_cell_hint(struct regulatory_request *pending_request) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1030 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1031 | struct regulatory_request *lr = get_last_request(); |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1032 | |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1033 | if (!reg_num_devs_support_basehint) |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1034 | return REG_REQ_IGNORE; |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1035 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1036 | if (reg_request_cell_base(lr) && |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1037 | !regdom_changes(pending_request->alpha2)) |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1038 | return REG_REQ_ALREADY_SET; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1039 | |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1040 | return REG_REQ_OK; |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1041 | } |
| 1042 | |
| 1043 | /* Device specific check */ |
| 1044 | static bool reg_dev_ignore_cell_hint(struct wiphy *wiphy) |
| 1045 | { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1046 | return !(wiphy->features & NL80211_FEATURE_CELL_BASE_REG_HINTS); |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1047 | } |
| 1048 | #else |
| 1049 | static int reg_ignore_cell_hint(struct regulatory_request *pending_request) |
| 1050 | { |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1051 | return REG_REQ_IGNORE; |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1052 | } |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1053 | |
| 1054 | static bool reg_dev_ignore_cell_hint(struct wiphy *wiphy) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1055 | { |
| 1056 | return true; |
| 1057 | } |
| 1058 | #endif |
| 1059 | |
Luis R. Rodriguez | fa1fb9c | 2013-10-02 18:33:10 -0700 | [diff] [blame] | 1060 | static bool wiphy_strict_alpha2_regd(struct wiphy *wiphy) |
| 1061 | { |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1062 | if (wiphy->regulatory_flags & REGULATORY_STRICT_REG && |
| 1063 | !(wiphy->regulatory_flags & REGULATORY_CUSTOM_REG)) |
Luis R. Rodriguez | fa1fb9c | 2013-10-02 18:33:10 -0700 | [diff] [blame] | 1064 | return true; |
| 1065 | return false; |
| 1066 | } |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1067 | |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1068 | static bool ignore_reg_update(struct wiphy *wiphy, |
| 1069 | enum nl80211_reg_initiator initiator) |
Luis R. Rodriguez | 14b9815 | 2008-11-12 14:22:03 -0800 | [diff] [blame] | 1070 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1071 | struct regulatory_request *lr = get_last_request(); |
| 1072 | |
| 1073 | if (!lr) { |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 1074 | REG_DBG_PRINT("Ignoring regulatory request set by %s " |
| 1075 | "since last_request is not set\n", |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1076 | reg_initiator_name(initiator)); |
Luis R. Rodriguez | 14b9815 | 2008-11-12 14:22:03 -0800 | [diff] [blame] | 1077 | return true; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1078 | } |
| 1079 | |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1080 | if (initiator == NL80211_REGDOM_SET_BY_CORE && |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1081 | wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) { |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 1082 | REG_DBG_PRINT("Ignoring regulatory request set by %s " |
| 1083 | "since the driver uses its own custom " |
| 1084 | "regulatory domain\n", |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1085 | reg_initiator_name(initiator)); |
Luis R. Rodriguez | 14b9815 | 2008-11-12 14:22:03 -0800 | [diff] [blame] | 1086 | return true; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1087 | } |
| 1088 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 1089 | /* |
| 1090 | * wiphy->regd will be set once the device has its own |
| 1091 | * desired regulatory domain set |
| 1092 | */ |
Luis R. Rodriguez | fa1fb9c | 2013-10-02 18:33:10 -0700 | [diff] [blame] | 1093 | if (wiphy_strict_alpha2_regd(wiphy) && !wiphy->regd && |
Luis R. Rodriguez | 749b527 | 2010-10-20 10:18:54 -0700 | [diff] [blame] | 1094 | initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE && |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1095 | !is_world_regdom(lr->alpha2)) { |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 1096 | REG_DBG_PRINT("Ignoring regulatory request set by %s " |
| 1097 | "since the driver requires its own regulatory " |
| 1098 | "domain to be set first\n", |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1099 | reg_initiator_name(initiator)); |
Luis R. Rodriguez | 14b9815 | 2008-11-12 14:22:03 -0800 | [diff] [blame] | 1100 | return true; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1101 | } |
| 1102 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1103 | if (reg_request_cell_base(lr)) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1104 | return reg_dev_ignore_cell_hint(wiphy); |
| 1105 | |
Luis R. Rodriguez | 14b9815 | 2008-11-12 14:22:03 -0800 | [diff] [blame] | 1106 | return false; |
| 1107 | } |
| 1108 | |
Luis R. Rodriguez | 3195e48 | 2012-12-19 10:53:03 -0800 | [diff] [blame] | 1109 | static bool reg_is_world_roaming(struct wiphy *wiphy) |
| 1110 | { |
| 1111 | const struct ieee80211_regdomain *cr = get_cfg80211_regdom(); |
| 1112 | const struct ieee80211_regdomain *wr = get_wiphy_regdom(wiphy); |
| 1113 | struct regulatory_request *lr = get_last_request(); |
| 1114 | |
| 1115 | if (is_world_regdom(cr->alpha2) || (wr && is_world_regdom(wr->alpha2))) |
| 1116 | return true; |
| 1117 | |
| 1118 | if (lr && lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE && |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1119 | wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) |
Luis R. Rodriguez | 3195e48 | 2012-12-19 10:53:03 -0800 | [diff] [blame] | 1120 | return true; |
| 1121 | |
| 1122 | return false; |
| 1123 | } |
| 1124 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1125 | 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] | 1126 | struct reg_beacon *reg_beacon) |
| 1127 | { |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1128 | struct ieee80211_supported_band *sband; |
| 1129 | struct ieee80211_channel *chan; |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1130 | bool channel_changed = false; |
| 1131 | struct ieee80211_channel chan_before; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1132 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1133 | sband = wiphy->bands[reg_beacon->chan.band]; |
| 1134 | chan = &sband->channels[chan_idx]; |
| 1135 | |
| 1136 | if (likely(chan->center_freq != reg_beacon->chan.center_freq)) |
| 1137 | return; |
| 1138 | |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1139 | if (chan->beacon_found) |
| 1140 | return; |
| 1141 | |
| 1142 | chan->beacon_found = true; |
| 1143 | |
Luis R. Rodriguez | 0f500a5 | 2012-12-19 10:53:04 -0800 | [diff] [blame] | 1144 | if (!reg_is_world_roaming(wiphy)) |
| 1145 | return; |
| 1146 | |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1147 | if (wiphy->regulatory_flags & REGULATORY_DISABLE_BEACON_HINTS) |
Luis R. Rodriguez | 3718424 | 2009-07-30 17:43:48 -0700 | [diff] [blame] | 1148 | return; |
| 1149 | |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1150 | chan_before.center_freq = chan->center_freq; |
| 1151 | chan_before.flags = chan->flags; |
| 1152 | |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 1153 | if (chan->flags & IEEE80211_CHAN_NO_IR) { |
| 1154 | chan->flags &= ~IEEE80211_CHAN_NO_IR; |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1155 | channel_changed = true; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1156 | } |
| 1157 | |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1158 | if (channel_changed) |
| 1159 | nl80211_send_beacon_hint_event(wiphy, &chan_before, chan); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1160 | } |
| 1161 | |
| 1162 | /* |
| 1163 | * Called when a scan on a wiphy finds a beacon on |
| 1164 | * new channel |
| 1165 | */ |
| 1166 | static void wiphy_update_new_beacon(struct wiphy *wiphy, |
| 1167 | struct reg_beacon *reg_beacon) |
| 1168 | { |
| 1169 | unsigned int i; |
| 1170 | struct ieee80211_supported_band *sband; |
| 1171 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1172 | if (!wiphy->bands[reg_beacon->chan.band]) |
| 1173 | return; |
| 1174 | |
| 1175 | sband = wiphy->bands[reg_beacon->chan.band]; |
| 1176 | |
| 1177 | for (i = 0; i < sband->n_channels; i++) |
| 1178 | handle_reg_beacon(wiphy, i, reg_beacon); |
| 1179 | } |
| 1180 | |
| 1181 | /* |
| 1182 | * Called upon reg changes or a new wiphy is added |
| 1183 | */ |
| 1184 | static void wiphy_update_beacon_reg(struct wiphy *wiphy) |
| 1185 | { |
| 1186 | unsigned int i; |
| 1187 | struct ieee80211_supported_band *sband; |
| 1188 | struct reg_beacon *reg_beacon; |
| 1189 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1190 | list_for_each_entry(reg_beacon, ®_beacon_list, list) { |
| 1191 | if (!wiphy->bands[reg_beacon->chan.band]) |
| 1192 | continue; |
| 1193 | sband = wiphy->bands[reg_beacon->chan.band]; |
| 1194 | for (i = 0; i < sband->n_channels; i++) |
| 1195 | handle_reg_beacon(wiphy, i, reg_beacon); |
| 1196 | } |
| 1197 | } |
| 1198 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1199 | /* Reap the advantages of previously found beacons */ |
| 1200 | static void reg_process_beacons(struct wiphy *wiphy) |
| 1201 | { |
Luis R. Rodriguez | b1ed8dd | 2009-05-02 00:34:15 -0400 | [diff] [blame] | 1202 | /* |
| 1203 | * Means we are just firing up cfg80211, so no beacons would |
| 1204 | * have been processed yet. |
| 1205 | */ |
| 1206 | if (!last_request) |
| 1207 | return; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1208 | wiphy_update_beacon_reg(wiphy); |
| 1209 | } |
| 1210 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1211 | static bool is_ht40_allowed(struct ieee80211_channel *chan) |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1212 | { |
| 1213 | if (!chan) |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1214 | return false; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1215 | if (chan->flags & IEEE80211_CHAN_DISABLED) |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1216 | return false; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1217 | /* This would happen when regulatory rules disallow HT40 completely */ |
Felix Fietkau | 55b183a | 2013-01-11 14:22:58 +0100 | [diff] [blame] | 1218 | if ((chan->flags & IEEE80211_CHAN_NO_HT40) == IEEE80211_CHAN_NO_HT40) |
| 1219 | return false; |
| 1220 | return true; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1221 | } |
| 1222 | |
| 1223 | static void reg_process_ht_flags_channel(struct wiphy *wiphy, |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1224 | struct ieee80211_channel *channel) |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1225 | { |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1226 | struct ieee80211_supported_band *sband = wiphy->bands[channel->band]; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1227 | struct ieee80211_channel *channel_before = NULL, *channel_after = NULL; |
| 1228 | unsigned int i; |
| 1229 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1230 | if (!is_ht40_allowed(channel)) { |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1231 | channel->flags |= IEEE80211_CHAN_NO_HT40; |
| 1232 | return; |
| 1233 | } |
| 1234 | |
| 1235 | /* |
| 1236 | * We need to ensure the extension channels exist to |
| 1237 | * be able to use HT40- or HT40+, this finds them (or not) |
| 1238 | */ |
| 1239 | for (i = 0; i < sband->n_channels; i++) { |
| 1240 | struct ieee80211_channel *c = &sband->channels[i]; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1241 | |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1242 | if (c->center_freq == (channel->center_freq - 20)) |
| 1243 | channel_before = c; |
| 1244 | if (c->center_freq == (channel->center_freq + 20)) |
| 1245 | channel_after = c; |
| 1246 | } |
| 1247 | |
| 1248 | /* |
| 1249 | * Please note that this assumes target bandwidth is 20 MHz, |
| 1250 | * if that ever changes we also need to change the below logic |
| 1251 | * to include that as well. |
| 1252 | */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1253 | if (!is_ht40_allowed(channel_before)) |
Luis R. Rodriguez | 689da1b | 2009-05-02 00:37:18 -0400 | [diff] [blame] | 1254 | channel->flags |= IEEE80211_CHAN_NO_HT40MINUS; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1255 | else |
Luis R. Rodriguez | 689da1b | 2009-05-02 00:37:18 -0400 | [diff] [blame] | 1256 | channel->flags &= ~IEEE80211_CHAN_NO_HT40MINUS; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1257 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1258 | if (!is_ht40_allowed(channel_after)) |
Luis R. Rodriguez | 689da1b | 2009-05-02 00:37:18 -0400 | [diff] [blame] | 1259 | channel->flags |= IEEE80211_CHAN_NO_HT40PLUS; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1260 | else |
Luis R. Rodriguez | 689da1b | 2009-05-02 00:37:18 -0400 | [diff] [blame] | 1261 | channel->flags &= ~IEEE80211_CHAN_NO_HT40PLUS; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1262 | } |
| 1263 | |
| 1264 | static void reg_process_ht_flags_band(struct wiphy *wiphy, |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1265 | struct ieee80211_supported_band *sband) |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1266 | { |
| 1267 | unsigned int i; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1268 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1269 | if (!sband) |
| 1270 | return; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1271 | |
| 1272 | for (i = 0; i < sband->n_channels; i++) |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1273 | reg_process_ht_flags_channel(wiphy, &sband->channels[i]); |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1274 | } |
| 1275 | |
| 1276 | static void reg_process_ht_flags(struct wiphy *wiphy) |
| 1277 | { |
| 1278 | enum ieee80211_band band; |
| 1279 | |
| 1280 | if (!wiphy) |
| 1281 | return; |
| 1282 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1283 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) |
| 1284 | reg_process_ht_flags_band(wiphy, wiphy->bands[band]); |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1285 | } |
| 1286 | |
Luis R. Rodriguez | 0e3802d | 2013-11-05 09:18:12 -0800 | [diff] [blame] | 1287 | static void reg_call_notifier(struct wiphy *wiphy, |
| 1288 | struct regulatory_request *request) |
| 1289 | { |
| 1290 | if (wiphy->reg_notifier) |
| 1291 | wiphy->reg_notifier(wiphy, request); |
| 1292 | } |
| 1293 | |
Sven Neumann | eac03e3 | 2011-08-30 23:38:53 +0200 | [diff] [blame] | 1294 | static void wiphy_update_regulatory(struct wiphy *wiphy, |
| 1295 | enum nl80211_reg_initiator initiator) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1296 | { |
| 1297 | enum ieee80211_band band; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1298 | struct regulatory_request *lr = get_last_request(); |
Sven Neumann | eac03e3 | 2011-08-30 23:38:53 +0200 | [diff] [blame] | 1299 | |
Luis R. Rodriguez | 0e3802d | 2013-11-05 09:18:12 -0800 | [diff] [blame] | 1300 | if (ignore_reg_update(wiphy, initiator)) { |
| 1301 | /* |
| 1302 | * Regulatory updates set by CORE are ignored for custom |
| 1303 | * regulatory cards. Let us notify the changes to the driver, |
| 1304 | * as some drivers used this to restore its orig_* reg domain. |
| 1305 | */ |
| 1306 | if (initiator == NL80211_REGDOM_SET_BY_CORE && |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1307 | wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) |
Luis R. Rodriguez | 0e3802d | 2013-11-05 09:18:12 -0800 | [diff] [blame] | 1308 | reg_call_notifier(wiphy, lr); |
Sven Neumann | a203c2a | 2011-07-12 15:52:07 +0200 | [diff] [blame] | 1309 | return; |
Luis R. Rodriguez | 0e3802d | 2013-11-05 09:18:12 -0800 | [diff] [blame] | 1310 | } |
Sven Neumann | a203c2a | 2011-07-12 15:52:07 +0200 | [diff] [blame] | 1311 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1312 | lr->dfs_region = get_cfg80211_regdom()->dfs_region; |
Luis R. Rodriguez | b68e6b3 | 2011-10-11 10:59:03 -0700 | [diff] [blame] | 1313 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1314 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) |
| 1315 | handle_band(wiphy, initiator, wiphy->bands[band]); |
Sven Neumann | a203c2a | 2011-07-12 15:52:07 +0200 | [diff] [blame] | 1316 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1317 | reg_process_beacons(wiphy); |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1318 | reg_process_ht_flags(wiphy); |
Luis R. Rodriguez | 0e3802d | 2013-11-05 09:18:12 -0800 | [diff] [blame] | 1319 | reg_call_notifier(wiphy, lr); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1320 | } |
| 1321 | |
Sven Neumann | d7549cb | 2011-08-30 23:38:54 +0200 | [diff] [blame] | 1322 | static void update_all_wiphy_regulatory(enum nl80211_reg_initiator initiator) |
| 1323 | { |
| 1324 | struct cfg80211_registered_device *rdev; |
Rajkumar Manoharan | 4a38994 | 2011-12-08 23:59:26 +0530 | [diff] [blame] | 1325 | struct wiphy *wiphy; |
Sven Neumann | d7549cb | 2011-08-30 23:38:54 +0200 | [diff] [blame] | 1326 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 1327 | ASSERT_RTNL(); |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 1328 | |
Rajkumar Manoharan | 4a38994 | 2011-12-08 23:59:26 +0530 | [diff] [blame] | 1329 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| 1330 | wiphy = &rdev->wiphy; |
| 1331 | wiphy_update_regulatory(wiphy, initiator); |
Rajkumar Manoharan | 4a38994 | 2011-12-08 23:59:26 +0530 | [diff] [blame] | 1332 | } |
Sven Neumann | d7549cb | 2011-08-30 23:38:54 +0200 | [diff] [blame] | 1333 | } |
| 1334 | |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1335 | static void handle_channel_custom(struct wiphy *wiphy, |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1336 | struct ieee80211_channel *chan, |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1337 | const struct ieee80211_regdomain *regd) |
| 1338 | { |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1339 | u32 bw_flags = 0; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1340 | const struct ieee80211_reg_rule *reg_rule = NULL; |
| 1341 | const struct ieee80211_power_rule *power_rule = NULL; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1342 | const struct ieee80211_freq_range *freq_range = NULL; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1343 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 1344 | reg_rule = freq_reg_info_regd(wiphy, MHZ_TO_KHZ(chan->center_freq), |
| 1345 | regd); |
Luis R. Rodriguez | ac46d48 | 2009-05-01 18:44:50 -0400 | [diff] [blame] | 1346 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 1347 | if (IS_ERR(reg_rule)) { |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 1348 | REG_DBG_PRINT("Disabling freq %d MHz as custom regd has no rule that fits it\n", |
| 1349 | chan->center_freq); |
Luis R. Rodriguez | cc493e4f | 2013-11-06 17:54:44 +0100 | [diff] [blame] | 1350 | chan->orig_flags |= IEEE80211_CHAN_DISABLED; |
| 1351 | chan->flags = chan->orig_flags; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1352 | return; |
| 1353 | } |
| 1354 | |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 1355 | chan_reg_rule_print_dbg(chan, reg_rule); |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 1356 | |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1357 | power_rule = ®_rule->power_rule; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1358 | freq_range = ®_rule->freq_range; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1359 | |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1360 | if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(40)) |
| 1361 | bw_flags = IEEE80211_CHAN_NO_HT40; |
Johannes Berg | c7a6ee2 | 2012-12-12 17:50:39 +0100 | [diff] [blame] | 1362 | if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(80)) |
| 1363 | bw_flags |= IEEE80211_CHAN_NO_80MHZ; |
| 1364 | if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(160)) |
| 1365 | bw_flags |= IEEE80211_CHAN_NO_160MHZ; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1366 | |
| 1367 | chan->flags |= map_regdom_flags(reg_rule->flags) | bw_flags; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1368 | 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] | 1369 | chan->max_reg_power = chan->max_power = |
| 1370 | (int) MBM_TO_DBM(power_rule->max_eirp); |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1371 | } |
| 1372 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1373 | static void handle_band_custom(struct wiphy *wiphy, |
| 1374 | struct ieee80211_supported_band *sband, |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1375 | const struct ieee80211_regdomain *regd) |
| 1376 | { |
| 1377 | unsigned int i; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1378 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1379 | if (!sband) |
| 1380 | return; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1381 | |
| 1382 | for (i = 0; i < sband->n_channels; i++) |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1383 | handle_channel_custom(wiphy, &sband->channels[i], regd); |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1384 | } |
| 1385 | |
| 1386 | /* Used by drivers prior to wiphy registration */ |
| 1387 | void wiphy_apply_custom_regulatory(struct wiphy *wiphy, |
| 1388 | const struct ieee80211_regdomain *regd) |
| 1389 | { |
| 1390 | enum ieee80211_band band; |
Luis R. Rodriguez | bbcf3f0 | 2009-05-19 17:49:47 -0400 | [diff] [blame] | 1391 | unsigned int bands_set = 0; |
Luis R. Rodriguez | ac46d48 | 2009-05-01 18:44:50 -0400 | [diff] [blame] | 1392 | |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1393 | WARN(!(wiphy->regulatory_flags & REGULATORY_CUSTOM_REG), |
| 1394 | "wiphy should have REGULATORY_CUSTOM_REG\n"); |
| 1395 | wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG; |
Luis R. Rodriguez | 222ea58 | 2013-11-05 09:18:00 -0800 | [diff] [blame] | 1396 | |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1397 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
Luis R. Rodriguez | bbcf3f0 | 2009-05-19 17:49:47 -0400 | [diff] [blame] | 1398 | if (!wiphy->bands[band]) |
| 1399 | continue; |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1400 | handle_band_custom(wiphy, wiphy->bands[band], regd); |
Luis R. Rodriguez | bbcf3f0 | 2009-05-19 17:49:47 -0400 | [diff] [blame] | 1401 | bands_set++; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1402 | } |
Luis R. Rodriguez | bbcf3f0 | 2009-05-19 17:49:47 -0400 | [diff] [blame] | 1403 | |
| 1404 | /* |
| 1405 | * no point in calling this if it won't have any effect |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1406 | * on your device's supported bands. |
Luis R. Rodriguez | bbcf3f0 | 2009-05-19 17:49:47 -0400 | [diff] [blame] | 1407 | */ |
| 1408 | WARN_ON(!bands_set); |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1409 | } |
| 1410 | EXPORT_SYMBOL(wiphy_apply_custom_regulatory); |
| 1411 | |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1412 | static void reg_set_request_processed(void) |
| 1413 | { |
| 1414 | bool need_more_processing = false; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1415 | struct regulatory_request *lr = get_last_request(); |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1416 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1417 | lr->processed = true; |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1418 | |
| 1419 | spin_lock(®_requests_lock); |
| 1420 | if (!list_empty(®_requests_list)) |
| 1421 | need_more_processing = true; |
| 1422 | spin_unlock(®_requests_lock); |
| 1423 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1424 | if (lr->initiator == NL80211_REGDOM_SET_BY_USER) |
Eliad Peller | fe20b39 | 2012-06-12 12:53:13 +0300 | [diff] [blame] | 1425 | cancel_delayed_work(®_timeout); |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 1426 | |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1427 | if (need_more_processing) |
| 1428 | schedule_work(®_work); |
| 1429 | } |
| 1430 | |
Luis R. Rodriguez | d1c96a9 | 2009-02-21 00:24:13 -0500 | [diff] [blame] | 1431 | /** |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1432 | * reg_process_hint_core - process core regulatory requests |
| 1433 | * @pending_request: a pending core regulatory request |
| 1434 | * |
| 1435 | * The wireless subsystem can use this function to process |
| 1436 | * a regulatory request issued by the regulatory core. |
| 1437 | * |
| 1438 | * Returns one of the different reg request treatment values. |
| 1439 | */ |
| 1440 | static enum reg_request_treatment |
| 1441 | reg_process_hint_core(struct regulatory_request *core_request) |
| 1442 | { |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1443 | |
| 1444 | core_request->intersect = false; |
| 1445 | core_request->processed = false; |
Luis R. Rodriguez | 5ad6ef5 | 2013-11-05 09:18:08 -0800 | [diff] [blame] | 1446 | |
Luis R. Rodriguez | 05f1a3e | 2013-11-05 09:18:09 -0800 | [diff] [blame] | 1447 | reg_update_last_request(core_request); |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1448 | |
Luis R. Rodriguez | fe6631f | 2013-11-05 09:18:10 -0800 | [diff] [blame] | 1449 | return reg_call_crda(core_request); |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1450 | } |
| 1451 | |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 1452 | static enum reg_request_treatment |
| 1453 | __reg_process_hint_user(struct regulatory_request *user_request) |
| 1454 | { |
| 1455 | struct regulatory_request *lr = get_last_request(); |
| 1456 | |
| 1457 | if (reg_request_cell_base(user_request)) |
| 1458 | return reg_ignore_cell_hint(user_request); |
| 1459 | |
| 1460 | if (reg_request_cell_base(lr)) |
| 1461 | return REG_REQ_IGNORE; |
| 1462 | |
| 1463 | if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) |
| 1464 | return REG_REQ_INTERSECT; |
| 1465 | /* |
| 1466 | * If the user knows better the user should set the regdom |
| 1467 | * to their country before the IE is picked up |
| 1468 | */ |
| 1469 | if (lr->initiator == NL80211_REGDOM_SET_BY_USER && |
| 1470 | lr->intersect) |
| 1471 | return REG_REQ_IGNORE; |
| 1472 | /* |
| 1473 | * Process user requests only after previous user/driver/core |
| 1474 | * requests have been processed |
| 1475 | */ |
| 1476 | if ((lr->initiator == NL80211_REGDOM_SET_BY_CORE || |
| 1477 | lr->initiator == NL80211_REGDOM_SET_BY_DRIVER || |
| 1478 | lr->initiator == NL80211_REGDOM_SET_BY_USER) && |
| 1479 | regdom_changes(lr->alpha2)) |
| 1480 | return REG_REQ_IGNORE; |
| 1481 | |
| 1482 | if (!regdom_changes(user_request->alpha2)) |
| 1483 | return REG_REQ_ALREADY_SET; |
| 1484 | |
| 1485 | return REG_REQ_OK; |
| 1486 | } |
| 1487 | |
| 1488 | /** |
| 1489 | * reg_process_hint_user - process user regulatory requests |
| 1490 | * @user_request: a pending user regulatory request |
| 1491 | * |
| 1492 | * The wireless subsystem can use this function to process |
| 1493 | * a regulatory request initiated by userspace. |
| 1494 | * |
| 1495 | * Returns one of the different reg request treatment values. |
| 1496 | */ |
| 1497 | static enum reg_request_treatment |
| 1498 | reg_process_hint_user(struct regulatory_request *user_request) |
| 1499 | { |
| 1500 | enum reg_request_treatment treatment; |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 1501 | |
| 1502 | treatment = __reg_process_hint_user(user_request); |
| 1503 | if (treatment == REG_REQ_IGNORE || |
| 1504 | treatment == REG_REQ_ALREADY_SET) { |
| 1505 | kfree(user_request); |
| 1506 | return treatment; |
| 1507 | } |
| 1508 | |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 1509 | user_request->intersect = treatment == REG_REQ_INTERSECT; |
| 1510 | user_request->processed = false; |
Luis R. Rodriguez | 5ad6ef5 | 2013-11-05 09:18:08 -0800 | [diff] [blame] | 1511 | |
Luis R. Rodriguez | 05f1a3e | 2013-11-05 09:18:09 -0800 | [diff] [blame] | 1512 | reg_update_last_request(user_request); |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 1513 | |
| 1514 | user_alpha2[0] = user_request->alpha2[0]; |
| 1515 | user_alpha2[1] = user_request->alpha2[1]; |
| 1516 | |
Luis R. Rodriguez | fe6631f | 2013-11-05 09:18:10 -0800 | [diff] [blame] | 1517 | return reg_call_crda(user_request); |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 1518 | } |
| 1519 | |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1520 | static enum reg_request_treatment |
| 1521 | __reg_process_hint_driver(struct regulatory_request *driver_request) |
| 1522 | { |
| 1523 | struct regulatory_request *lr = get_last_request(); |
| 1524 | |
| 1525 | if (lr->initiator == NL80211_REGDOM_SET_BY_CORE) { |
| 1526 | if (regdom_changes(driver_request->alpha2)) |
| 1527 | return REG_REQ_OK; |
| 1528 | return REG_REQ_ALREADY_SET; |
| 1529 | } |
| 1530 | |
| 1531 | /* |
| 1532 | * This would happen if you unplug and plug your card |
| 1533 | * back in or if you add a new device for which the previously |
| 1534 | * loaded card also agrees on the regulatory domain. |
| 1535 | */ |
| 1536 | if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER && |
| 1537 | !regdom_changes(driver_request->alpha2)) |
| 1538 | return REG_REQ_ALREADY_SET; |
| 1539 | |
| 1540 | return REG_REQ_INTERSECT; |
| 1541 | } |
| 1542 | |
| 1543 | /** |
| 1544 | * reg_process_hint_driver - process driver regulatory requests |
| 1545 | * @driver_request: a pending driver regulatory request |
| 1546 | * |
| 1547 | * The wireless subsystem can use this function to process |
| 1548 | * a regulatory request issued by an 802.11 driver. |
| 1549 | * |
| 1550 | * Returns one of the different reg request treatment values. |
| 1551 | */ |
| 1552 | static enum reg_request_treatment |
| 1553 | reg_process_hint_driver(struct wiphy *wiphy, |
| 1554 | struct regulatory_request *driver_request) |
| 1555 | { |
| 1556 | const struct ieee80211_regdomain *regd; |
| 1557 | enum reg_request_treatment treatment; |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1558 | |
| 1559 | treatment = __reg_process_hint_driver(driver_request); |
| 1560 | |
| 1561 | switch (treatment) { |
| 1562 | case REG_REQ_OK: |
| 1563 | break; |
| 1564 | case REG_REQ_IGNORE: |
| 1565 | kfree(driver_request); |
| 1566 | return treatment; |
| 1567 | case REG_REQ_INTERSECT: |
| 1568 | /* fall through */ |
| 1569 | case REG_REQ_ALREADY_SET: |
| 1570 | regd = reg_copy_regd(get_cfg80211_regdom()); |
| 1571 | if (IS_ERR(regd)) { |
| 1572 | kfree(driver_request); |
| 1573 | return REG_REQ_IGNORE; |
| 1574 | } |
| 1575 | rcu_assign_pointer(wiphy->regd, regd); |
| 1576 | } |
| 1577 | |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1578 | |
| 1579 | driver_request->intersect = treatment == REG_REQ_INTERSECT; |
| 1580 | driver_request->processed = false; |
Luis R. Rodriguez | 5ad6ef5 | 2013-11-05 09:18:08 -0800 | [diff] [blame] | 1581 | |
Luis R. Rodriguez | 05f1a3e | 2013-11-05 09:18:09 -0800 | [diff] [blame] | 1582 | reg_update_last_request(driver_request); |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1583 | |
| 1584 | /* |
| 1585 | * Since CRDA will not be called in this case as we already |
| 1586 | * have applied the requested regulatory domain before we just |
| 1587 | * inform userspace we have processed the request |
| 1588 | */ |
| 1589 | if (treatment == REG_REQ_ALREADY_SET) { |
| 1590 | nl80211_send_reg_change_event(driver_request); |
| 1591 | reg_set_request_processed(); |
| 1592 | return treatment; |
| 1593 | } |
| 1594 | |
Luis R. Rodriguez | fe6631f | 2013-11-05 09:18:10 -0800 | [diff] [blame] | 1595 | return reg_call_crda(driver_request); |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1596 | } |
| 1597 | |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1598 | static enum reg_request_treatment |
| 1599 | __reg_process_hint_country_ie(struct wiphy *wiphy, |
| 1600 | struct regulatory_request *country_ie_request) |
| 1601 | { |
| 1602 | struct wiphy *last_wiphy = NULL; |
| 1603 | struct regulatory_request *lr = get_last_request(); |
| 1604 | |
| 1605 | if (reg_request_cell_base(lr)) { |
| 1606 | /* Trust a Cell base station over the AP's country IE */ |
| 1607 | if (regdom_changes(country_ie_request->alpha2)) |
| 1608 | return REG_REQ_IGNORE; |
| 1609 | return REG_REQ_ALREADY_SET; |
Luis R. Rodriguez | 2a90146 | 2013-11-11 22:15:31 +0100 | [diff] [blame] | 1610 | } else { |
| 1611 | if (wiphy->regulatory_flags & REGULATORY_COUNTRY_IE_IGNORE) |
| 1612 | return REG_REQ_IGNORE; |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1613 | } |
| 1614 | |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1615 | if (unlikely(!is_an_alpha2(country_ie_request->alpha2))) |
| 1616 | return -EINVAL; |
Luis R. Rodriguez | 2f1c6c5 | 2013-11-05 09:18:07 -0800 | [diff] [blame] | 1617 | |
| 1618 | if (lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) |
| 1619 | return REG_REQ_OK; |
| 1620 | |
| 1621 | last_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx); |
| 1622 | |
| 1623 | if (last_wiphy != wiphy) { |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1624 | /* |
Luis R. Rodriguez | 2f1c6c5 | 2013-11-05 09:18:07 -0800 | [diff] [blame] | 1625 | * Two cards with two APs claiming different |
| 1626 | * Country IE alpha2s. We could |
| 1627 | * intersect them, but that seems unlikely |
| 1628 | * to be correct. Reject second one for now. |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1629 | */ |
Luis R. Rodriguez | 2f1c6c5 | 2013-11-05 09:18:07 -0800 | [diff] [blame] | 1630 | if (regdom_changes(country_ie_request->alpha2)) |
| 1631 | return REG_REQ_IGNORE; |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1632 | return REG_REQ_ALREADY_SET; |
| 1633 | } |
Luis R. Rodriguez | 2f1c6c5 | 2013-11-05 09:18:07 -0800 | [diff] [blame] | 1634 | /* |
| 1635 | * Two consecutive Country IE hints on the same wiphy. |
| 1636 | * This should be picked up early by the driver/stack |
| 1637 | */ |
| 1638 | if (WARN_ON(regdom_changes(country_ie_request->alpha2))) |
| 1639 | return REG_REQ_OK; |
| 1640 | return REG_REQ_ALREADY_SET; |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1641 | } |
| 1642 | |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1643 | /** |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1644 | * reg_process_hint_country_ie - process regulatory requests from country IEs |
| 1645 | * @country_ie_request: a regulatory request from a country IE |
Luis R. Rodriguez | d1c96a9 | 2009-02-21 00:24:13 -0500 | [diff] [blame] | 1646 | * |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1647 | * The wireless subsystem can use this function to process |
| 1648 | * a regulatory request issued by a country Information Element. |
Luis R. Rodriguez | d1c96a9 | 2009-02-21 00:24:13 -0500 | [diff] [blame] | 1649 | * |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1650 | * Returns one of the different reg request treatment values. |
Luis R. Rodriguez | d1c96a9 | 2009-02-21 00:24:13 -0500 | [diff] [blame] | 1651 | */ |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1652 | static enum reg_request_treatment |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1653 | reg_process_hint_country_ie(struct wiphy *wiphy, |
| 1654 | struct regulatory_request *country_ie_request) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1655 | { |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1656 | enum reg_request_treatment treatment; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1657 | |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1658 | treatment = __reg_process_hint_country_ie(wiphy, country_ie_request); |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 1659 | |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1660 | switch (treatment) { |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1661 | case REG_REQ_OK: |
| 1662 | break; |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1663 | case REG_REQ_IGNORE: |
| 1664 | /* fall through */ |
| 1665 | case REG_REQ_ALREADY_SET: |
| 1666 | kfree(country_ie_request); |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1667 | return treatment; |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1668 | case REG_REQ_INTERSECT: |
| 1669 | kfree(country_ie_request); |
| 1670 | /* |
| 1671 | * This doesn't happen yet, not sure we |
| 1672 | * ever want to support it for this case. |
| 1673 | */ |
| 1674 | WARN_ONCE(1, "Unexpected intersection for country IEs"); |
| 1675 | return REG_REQ_IGNORE; |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 1676 | } |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1677 | |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1678 | country_ie_request->intersect = false; |
| 1679 | country_ie_request->processed = false; |
Luis R. Rodriguez | 5ad6ef5 | 2013-11-05 09:18:08 -0800 | [diff] [blame] | 1680 | |
Luis R. Rodriguez | 05f1a3e | 2013-11-05 09:18:09 -0800 | [diff] [blame] | 1681 | reg_update_last_request(country_ie_request); |
Luis R. Rodriguez | d951c1d | 2009-02-21 00:24:15 -0500 | [diff] [blame] | 1682 | |
Luis R. Rodriguez | fe6631f | 2013-11-05 09:18:10 -0800 | [diff] [blame] | 1683 | return reg_call_crda(country_ie_request); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1684 | } |
| 1685 | |
Luis R. Rodriguez | 30a548c | 2009-05-02 01:17:27 -0400 | [diff] [blame] | 1686 | /* This processes *all* regulatory hints */ |
Luis R. Rodriguez | 1daa37c | 2013-11-05 09:18:02 -0800 | [diff] [blame] | 1687 | static void reg_process_hint(struct regulatory_request *reg_request) |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1688 | { |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1689 | struct wiphy *wiphy = NULL; |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1690 | enum reg_request_treatment treatment; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1691 | |
Johannes Berg | f417376 | 2012-12-03 18:23:37 +0100 | [diff] [blame] | 1692 | if (reg_request->wiphy_idx != WIPHY_IDX_INVALID) |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1693 | wiphy = wiphy_idx_to_wiphy(reg_request->wiphy_idx); |
| 1694 | |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1695 | switch (reg_request->initiator) { |
| 1696 | case NL80211_REGDOM_SET_BY_CORE: |
| 1697 | reg_process_hint_core(reg_request); |
| 1698 | return; |
| 1699 | case NL80211_REGDOM_SET_BY_USER: |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 1700 | treatment = reg_process_hint_user(reg_request); |
| 1701 | if (treatment == REG_REQ_OK || |
| 1702 | treatment == REG_REQ_ALREADY_SET) |
| 1703 | return; |
| 1704 | schedule_delayed_work(®_timeout, msecs_to_jiffies(3142)); |
| 1705 | return; |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1706 | case NL80211_REGDOM_SET_BY_DRIVER: |
Ilan Peer | 772f038 | 2014-01-14 15:17:23 +0200 | [diff] [blame] | 1707 | if (!wiphy) |
| 1708 | goto out_free; |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1709 | treatment = reg_process_hint_driver(wiphy, reg_request); |
| 1710 | break; |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1711 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
Ilan Peer | 772f038 | 2014-01-14 15:17:23 +0200 | [diff] [blame] | 1712 | if (!wiphy) |
| 1713 | goto out_free; |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1714 | treatment = reg_process_hint_country_ie(wiphy, reg_request); |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1715 | break; |
| 1716 | default: |
| 1717 | WARN(1, "invalid initiator %d\n", reg_request->initiator); |
Ilan Peer | 772f038 | 2014-01-14 15:17:23 +0200 | [diff] [blame] | 1718 | goto out_free; |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1719 | } |
| 1720 | |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1721 | /* This is required so that the orig_* parameters are saved */ |
| 1722 | if (treatment == REG_REQ_ALREADY_SET && wiphy && |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1723 | wiphy->regulatory_flags & REGULATORY_STRICT_REG) |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1724 | wiphy_update_regulatory(wiphy, reg_request->initiator); |
Ilan Peer | 772f038 | 2014-01-14 15:17:23 +0200 | [diff] [blame] | 1725 | |
| 1726 | return; |
| 1727 | |
| 1728 | out_free: |
| 1729 | kfree(reg_request); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1730 | } |
| 1731 | |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1732 | /* |
| 1733 | * Processes regulatory hints, this is all the NL80211_REGDOM_SET_BY_* |
| 1734 | * Regulatory hints come on a first come first serve basis and we |
| 1735 | * must process each one atomically. |
| 1736 | */ |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1737 | static void reg_process_pending_hints(void) |
Luis R. Rodriguez | b0e2880 | 2010-11-17 21:46:08 -0800 | [diff] [blame] | 1738 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1739 | struct regulatory_request *reg_request, *lr; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1740 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1741 | lr = get_last_request(); |
Luis R. Rodriguez | b0e2880 | 2010-11-17 21:46:08 -0800 | [diff] [blame] | 1742 | |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1743 | /* When last_request->processed becomes true this will be rescheduled */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1744 | if (lr && !lr->processed) { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1745 | 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] | 1746 | return; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1747 | } |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1748 | |
| 1749 | spin_lock(®_requests_lock); |
| 1750 | |
| 1751 | if (list_empty(®_requests_list)) { |
| 1752 | spin_unlock(®_requests_lock); |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 1753 | return; |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1754 | } |
| 1755 | |
| 1756 | reg_request = list_first_entry(®_requests_list, |
| 1757 | struct regulatory_request, |
| 1758 | list); |
| 1759 | list_del_init(®_request->list); |
| 1760 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1761 | spin_unlock(®_requests_lock); |
Luis R. Rodriguez | b0e2880 | 2010-11-17 21:46:08 -0800 | [diff] [blame] | 1762 | |
Luis R. Rodriguez | 1daa37c | 2013-11-05 09:18:02 -0800 | [diff] [blame] | 1763 | reg_process_hint(reg_request); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1764 | } |
| 1765 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1766 | /* Processes beacon hints -- this has nothing to do with country IEs */ |
| 1767 | static void reg_process_pending_beacon_hints(void) |
| 1768 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 1769 | struct cfg80211_registered_device *rdev; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1770 | struct reg_beacon *pending_beacon, *tmp; |
| 1771 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1772 | /* This goes through the _pending_ beacon list */ |
| 1773 | spin_lock_bh(®_pending_beacons_lock); |
| 1774 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1775 | list_for_each_entry_safe(pending_beacon, tmp, |
| 1776 | ®_pending_beacons, list) { |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1777 | list_del_init(&pending_beacon->list); |
| 1778 | |
| 1779 | /* Applies the beacon hint to current wiphys */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 1780 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) |
| 1781 | wiphy_update_new_beacon(&rdev->wiphy, pending_beacon); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1782 | |
| 1783 | /* Remembers the beacon hint for new wiphys or reg changes */ |
| 1784 | list_add_tail(&pending_beacon->list, ®_beacon_list); |
| 1785 | } |
| 1786 | |
| 1787 | spin_unlock_bh(®_pending_beacons_lock); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1788 | } |
| 1789 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1790 | static void reg_todo(struct work_struct *work) |
| 1791 | { |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 1792 | rtnl_lock(); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1793 | reg_process_pending_hints(); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1794 | reg_process_pending_beacon_hints(); |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 1795 | rtnl_unlock(); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1796 | } |
| 1797 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1798 | static void queue_regulatory_request(struct regulatory_request *request) |
| 1799 | { |
Johannes Berg | d4f2c88 | 2012-12-03 18:59:58 +0100 | [diff] [blame] | 1800 | request->alpha2[0] = toupper(request->alpha2[0]); |
| 1801 | request->alpha2[1] = toupper(request->alpha2[1]); |
John W. Linville | c61029c | 2010-08-05 14:26:24 -0400 | [diff] [blame] | 1802 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1803 | spin_lock(®_requests_lock); |
| 1804 | list_add_tail(&request->list, ®_requests_list); |
| 1805 | spin_unlock(®_requests_lock); |
| 1806 | |
| 1807 | schedule_work(®_work); |
| 1808 | } |
| 1809 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1810 | /* |
| 1811 | * Core regulatory hint -- happens during cfg80211_init() |
| 1812 | * and when we restore regulatory settings. |
| 1813 | */ |
Luis R. Rodriguez | ba25c14 | 2009-02-21 00:04:23 -0500 | [diff] [blame] | 1814 | static int regulatory_hint_core(const char *alpha2) |
| 1815 | { |
| 1816 | struct regulatory_request *request; |
| 1817 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1818 | request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); |
Luis R. Rodriguez | ba25c14 | 2009-02-21 00:04:23 -0500 | [diff] [blame] | 1819 | if (!request) |
| 1820 | return -ENOMEM; |
| 1821 | |
| 1822 | request->alpha2[0] = alpha2[0]; |
| 1823 | request->alpha2[1] = alpha2[1]; |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1824 | request->initiator = NL80211_REGDOM_SET_BY_CORE; |
Luis R. Rodriguez | ba25c14 | 2009-02-21 00:04:23 -0500 | [diff] [blame] | 1825 | |
Luis R. Rodriguez | 31e9972 | 2010-11-17 21:46:06 -0800 | [diff] [blame] | 1826 | queue_regulatory_request(request); |
Luis R. Rodriguez | 5078b2e | 2009-05-13 17:04:42 -0400 | [diff] [blame] | 1827 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1828 | return 0; |
Luis R. Rodriguez | ba25c14 | 2009-02-21 00:04:23 -0500 | [diff] [blame] | 1829 | } |
| 1830 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1831 | /* User hints */ |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1832 | int regulatory_hint_user(const char *alpha2, |
| 1833 | enum nl80211_user_reg_hint_type user_reg_hint_type) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1834 | { |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1835 | struct regulatory_request *request; |
| 1836 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1837 | if (WARN_ON(!alpha2)) |
| 1838 | return -EINVAL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1839 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1840 | request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); |
| 1841 | if (!request) |
| 1842 | return -ENOMEM; |
| 1843 | |
Johannes Berg | f417376 | 2012-12-03 18:23:37 +0100 | [diff] [blame] | 1844 | request->wiphy_idx = WIPHY_IDX_INVALID; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1845 | request->alpha2[0] = alpha2[0]; |
| 1846 | request->alpha2[1] = alpha2[1]; |
Luis R. Rodriguez | e12822e | 2010-01-04 11:37:39 -0500 | [diff] [blame] | 1847 | request->initiator = NL80211_REGDOM_SET_BY_USER; |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1848 | request->user_reg_hint_type = user_reg_hint_type; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1849 | |
| 1850 | queue_regulatory_request(request); |
| 1851 | |
| 1852 | return 0; |
| 1853 | } |
| 1854 | |
| 1855 | /* Driver hints */ |
| 1856 | int regulatory_hint(struct wiphy *wiphy, const char *alpha2) |
| 1857 | { |
| 1858 | struct regulatory_request *request; |
| 1859 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1860 | if (WARN_ON(!alpha2 || !wiphy)) |
| 1861 | return -EINVAL; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1862 | |
Luis R. Rodriguez | 4f7b914 | 2013-12-14 20:09:06 +0100 | [diff] [blame] | 1863 | wiphy->regulatory_flags &= ~REGULATORY_CUSTOM_REG; |
| 1864 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1865 | request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); |
| 1866 | if (!request) |
| 1867 | return -ENOMEM; |
| 1868 | |
| 1869 | request->wiphy_idx = get_wiphy_idx(wiphy); |
| 1870 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1871 | request->alpha2[0] = alpha2[0]; |
| 1872 | request->alpha2[1] = alpha2[1]; |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1873 | request->initiator = NL80211_REGDOM_SET_BY_DRIVER; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1874 | |
| 1875 | queue_regulatory_request(request); |
| 1876 | |
| 1877 | return 0; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1878 | } |
| 1879 | EXPORT_SYMBOL(regulatory_hint); |
| 1880 | |
Luis R. Rodriguez | 789fd03 | 2013-10-04 18:07:24 -0700 | [diff] [blame] | 1881 | void regulatory_hint_country_ie(struct wiphy *wiphy, enum ieee80211_band band, |
| 1882 | const u8 *country_ie, u8 country_ie_len) |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1883 | { |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1884 | char alpha2[2]; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1885 | enum environment_cap env = ENVIRON_ANY; |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 1886 | struct regulatory_request *request = NULL, *lr; |
Luis R. Rodriguez | d335fe6 | 2009-02-21 00:04:27 -0500 | [diff] [blame] | 1887 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1888 | /* IE len must be evenly divisible by 2 */ |
| 1889 | if (country_ie_len & 0x01) |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 1890 | return; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1891 | |
| 1892 | if (country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 1893 | return; |
| 1894 | |
| 1895 | request = kzalloc(sizeof(*request), GFP_KERNEL); |
| 1896 | if (!request) |
| 1897 | return; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1898 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1899 | alpha2[0] = country_ie[0]; |
| 1900 | alpha2[1] = country_ie[1]; |
| 1901 | |
| 1902 | if (country_ie[2] == 'I') |
| 1903 | env = ENVIRON_INDOOR; |
| 1904 | else if (country_ie[2] == 'O') |
| 1905 | env = ENVIRON_OUTDOOR; |
| 1906 | |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 1907 | rcu_read_lock(); |
| 1908 | lr = get_last_request(); |
| 1909 | |
| 1910 | if (unlikely(!lr)) |
| 1911 | goto out; |
| 1912 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 1913 | /* |
Luis R. Rodriguez | 8b19e6c | 2009-07-30 17:38:09 -0700 | [diff] [blame] | 1914 | * We will run this only upon a successful connection on cfg80211. |
Luis R. Rodriguez | 4b44c8b | 2009-07-30 17:38:07 -0700 | [diff] [blame] | 1915 | * We leave conflict resolution to the workqueue, where can hold |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 1916 | * the RTNL. |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 1917 | */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1918 | if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && |
| 1919 | lr->wiphy_idx != WIPHY_IDX_INVALID) |
Luis R. Rodriguez | 4b44c8b | 2009-07-30 17:38:07 -0700 | [diff] [blame] | 1920 | goto out; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1921 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1922 | request->wiphy_idx = get_wiphy_idx(wiphy); |
John W. Linville | 4f366c5 | 2010-07-15 14:57:33 -0400 | [diff] [blame] | 1923 | request->alpha2[0] = alpha2[0]; |
| 1924 | request->alpha2[1] = alpha2[1]; |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1925 | request->initiator = NL80211_REGDOM_SET_BY_COUNTRY_IE; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1926 | request->country_ie_env = env; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1927 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1928 | queue_regulatory_request(request); |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 1929 | request = NULL; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1930 | out: |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 1931 | kfree(request); |
| 1932 | rcu_read_unlock(); |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1933 | } |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1934 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1935 | static void restore_alpha2(char *alpha2, bool reset_user) |
| 1936 | { |
| 1937 | /* indicates there is no alpha2 to consider for restoration */ |
| 1938 | alpha2[0] = '9'; |
| 1939 | alpha2[1] = '7'; |
| 1940 | |
| 1941 | /* The user setting has precedence over the module parameter */ |
| 1942 | if (is_user_regdom_saved()) { |
| 1943 | /* Unless we're asked to ignore it and reset it */ |
| 1944 | if (reset_user) { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1945 | REG_DBG_PRINT("Restoring regulatory settings including user preference\n"); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1946 | user_alpha2[0] = '9'; |
| 1947 | user_alpha2[1] = '7'; |
| 1948 | |
| 1949 | /* |
| 1950 | * If we're ignoring user settings, we still need to |
| 1951 | * check the module parameter to ensure we put things |
| 1952 | * back as they were for a full restore. |
| 1953 | */ |
| 1954 | if (!is_world_regdom(ieee80211_regdom)) { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1955 | REG_DBG_PRINT("Keeping preference on module parameter ieee80211_regdom: %c%c\n", |
| 1956 | ieee80211_regdom[0], ieee80211_regdom[1]); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1957 | alpha2[0] = ieee80211_regdom[0]; |
| 1958 | alpha2[1] = ieee80211_regdom[1]; |
| 1959 | } |
| 1960 | } else { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1961 | REG_DBG_PRINT("Restoring regulatory settings while preserving user preference for: %c%c\n", |
| 1962 | user_alpha2[0], user_alpha2[1]); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1963 | alpha2[0] = user_alpha2[0]; |
| 1964 | alpha2[1] = user_alpha2[1]; |
| 1965 | } |
| 1966 | } else if (!is_world_regdom(ieee80211_regdom)) { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1967 | REG_DBG_PRINT("Keeping preference on module parameter ieee80211_regdom: %c%c\n", |
| 1968 | ieee80211_regdom[0], ieee80211_regdom[1]); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1969 | alpha2[0] = ieee80211_regdom[0]; |
| 1970 | alpha2[1] = ieee80211_regdom[1]; |
| 1971 | } else |
Luis R. Rodriguez | d91e41b | 2010-10-20 10:18:59 -0700 | [diff] [blame] | 1972 | REG_DBG_PRINT("Restoring regulatory settings\n"); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1973 | } |
| 1974 | |
Rajkumar Manoharan | 5ce543d | 2011-12-07 21:50:08 +0530 | [diff] [blame] | 1975 | static void restore_custom_reg_settings(struct wiphy *wiphy) |
| 1976 | { |
| 1977 | struct ieee80211_supported_band *sband; |
| 1978 | enum ieee80211_band band; |
| 1979 | struct ieee80211_channel *chan; |
| 1980 | int i; |
| 1981 | |
| 1982 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 1983 | sband = wiphy->bands[band]; |
| 1984 | if (!sband) |
| 1985 | continue; |
| 1986 | for (i = 0; i < sband->n_channels; i++) { |
| 1987 | chan = &sband->channels[i]; |
| 1988 | chan->flags = chan->orig_flags; |
| 1989 | chan->max_antenna_gain = chan->orig_mag; |
| 1990 | chan->max_power = chan->orig_mpwr; |
Paul Stewart | 899852a | 2012-08-01 16:54:42 -0700 | [diff] [blame] | 1991 | chan->beacon_found = false; |
Rajkumar Manoharan | 5ce543d | 2011-12-07 21:50:08 +0530 | [diff] [blame] | 1992 | } |
| 1993 | } |
| 1994 | } |
| 1995 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1996 | /* |
| 1997 | * Restoring regulatory settings involves ingoring any |
| 1998 | * possibly stale country IE information and user regulatory |
| 1999 | * settings if so desired, this includes any beacon hints |
| 2000 | * learned as we could have traveled outside to another country |
| 2001 | * after disconnection. To restore regulatory settings we do |
| 2002 | * exactly what we did at bootup: |
| 2003 | * |
| 2004 | * - send a core regulatory hint |
| 2005 | * - send a user regulatory hint if applicable |
| 2006 | * |
| 2007 | * Device drivers that send a regulatory hint for a specific country |
| 2008 | * keep their own regulatory domain on wiphy->regd so that does does |
| 2009 | * not need to be remembered. |
| 2010 | */ |
| 2011 | static void restore_regulatory_settings(bool reset_user) |
| 2012 | { |
| 2013 | char alpha2[2]; |
Dmitry Shmidt | cee0bec | 2011-12-19 12:32:21 -0800 | [diff] [blame] | 2014 | char world_alpha2[2]; |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2015 | struct reg_beacon *reg_beacon, *btmp; |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 2016 | struct regulatory_request *reg_request, *tmp; |
| 2017 | LIST_HEAD(tmp_reg_req_list); |
Rajkumar Manoharan | 5ce543d | 2011-12-07 21:50:08 +0530 | [diff] [blame] | 2018 | struct cfg80211_registered_device *rdev; |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2019 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 2020 | ASSERT_RTNL(); |
| 2021 | |
Johannes Berg | 2d31986 | 2013-01-09 12:01:38 +0100 | [diff] [blame] | 2022 | reset_regdomains(true, &world_regdom); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2023 | restore_alpha2(alpha2, reset_user); |
| 2024 | |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 2025 | /* |
| 2026 | * If there's any pending requests we simply |
| 2027 | * stash them to a temporary pending queue and |
| 2028 | * add then after we've restored regulatory |
| 2029 | * settings. |
| 2030 | */ |
| 2031 | spin_lock(®_requests_lock); |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 2032 | list_for_each_entry_safe(reg_request, tmp, ®_requests_list, list) { |
| 2033 | if (reg_request->initiator != NL80211_REGDOM_SET_BY_USER) |
| 2034 | continue; |
| 2035 | list_move_tail(®_request->list, &tmp_reg_req_list); |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 2036 | } |
| 2037 | spin_unlock(®_requests_lock); |
| 2038 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2039 | /* Clear beacon hints */ |
| 2040 | spin_lock_bh(®_pending_beacons_lock); |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 2041 | list_for_each_entry_safe(reg_beacon, btmp, ®_pending_beacons, list) { |
| 2042 | list_del(®_beacon->list); |
| 2043 | kfree(reg_beacon); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2044 | } |
| 2045 | spin_unlock_bh(®_pending_beacons_lock); |
| 2046 | |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 2047 | list_for_each_entry_safe(reg_beacon, btmp, ®_beacon_list, list) { |
| 2048 | list_del(®_beacon->list); |
| 2049 | kfree(reg_beacon); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2050 | } |
| 2051 | |
| 2052 | /* First restore to the basic regulatory settings */ |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 2053 | world_alpha2[0] = cfg80211_world_regdom->alpha2[0]; |
| 2054 | world_alpha2[1] = cfg80211_world_regdom->alpha2[1]; |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2055 | |
Rajkumar Manoharan | 5ce543d | 2011-12-07 21:50:08 +0530 | [diff] [blame] | 2056 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 2057 | if (rdev->wiphy.regulatory_flags & REGULATORY_CUSTOM_REG) |
Rajkumar Manoharan | 5ce543d | 2011-12-07 21:50:08 +0530 | [diff] [blame] | 2058 | restore_custom_reg_settings(&rdev->wiphy); |
| 2059 | } |
| 2060 | |
Dmitry Shmidt | cee0bec | 2011-12-19 12:32:21 -0800 | [diff] [blame] | 2061 | regulatory_hint_core(world_alpha2); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2062 | |
| 2063 | /* |
| 2064 | * This restores the ieee80211_regdom module parameter |
| 2065 | * preference or the last user requested regulatory |
| 2066 | * settings, user regulatory settings takes precedence. |
| 2067 | */ |
| 2068 | if (is_an_alpha2(alpha2)) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2069 | regulatory_hint_user(user_alpha2, NL80211_USER_REG_HINT_USER); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2070 | |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 2071 | spin_lock(®_requests_lock); |
Johannes Berg | 11cff96 | 2012-12-03 18:56:41 +0100 | [diff] [blame] | 2072 | list_splice_tail_init(&tmp_reg_req_list, ®_requests_list); |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 2073 | spin_unlock(®_requests_lock); |
| 2074 | |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 2075 | REG_DBG_PRINT("Kicking the queue\n"); |
| 2076 | |
| 2077 | schedule_work(®_work); |
| 2078 | } |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2079 | |
| 2080 | void regulatory_hint_disconnect(void) |
| 2081 | { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2082 | 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] | 2083 | restore_regulatory_settings(false); |
| 2084 | } |
| 2085 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2086 | static bool freq_is_chan_12_13_14(u16 freq) |
| 2087 | { |
Bruno Randolf | 59eb21a | 2011-01-17 13:37:28 +0900 | [diff] [blame] | 2088 | if (freq == ieee80211_channel_to_frequency(12, IEEE80211_BAND_2GHZ) || |
| 2089 | freq == ieee80211_channel_to_frequency(13, IEEE80211_BAND_2GHZ) || |
| 2090 | freq == ieee80211_channel_to_frequency(14, IEEE80211_BAND_2GHZ)) |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2091 | return true; |
| 2092 | return false; |
| 2093 | } |
| 2094 | |
Luis R. Rodriguez | 3ebfa6e | 2012-12-19 10:53:02 -0800 | [diff] [blame] | 2095 | static bool pending_reg_beacon(struct ieee80211_channel *beacon_chan) |
| 2096 | { |
| 2097 | struct reg_beacon *pending_beacon; |
| 2098 | |
| 2099 | list_for_each_entry(pending_beacon, ®_pending_beacons, list) |
| 2100 | if (beacon_chan->center_freq == |
| 2101 | pending_beacon->chan.center_freq) |
| 2102 | return true; |
| 2103 | return false; |
| 2104 | } |
| 2105 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2106 | int regulatory_hint_found_beacon(struct wiphy *wiphy, |
| 2107 | struct ieee80211_channel *beacon_chan, |
| 2108 | gfp_t gfp) |
| 2109 | { |
| 2110 | struct reg_beacon *reg_beacon; |
Luis R. Rodriguez | 3ebfa6e | 2012-12-19 10:53:02 -0800 | [diff] [blame] | 2111 | bool processing; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2112 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2113 | if (beacon_chan->beacon_found || |
| 2114 | beacon_chan->flags & IEEE80211_CHAN_RADAR || |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2115 | (beacon_chan->band == IEEE80211_BAND_2GHZ && |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2116 | !freq_is_chan_12_13_14(beacon_chan->center_freq))) |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2117 | return 0; |
| 2118 | |
Luis R. Rodriguez | 3ebfa6e | 2012-12-19 10:53:02 -0800 | [diff] [blame] | 2119 | spin_lock_bh(®_pending_beacons_lock); |
| 2120 | processing = pending_reg_beacon(beacon_chan); |
| 2121 | spin_unlock_bh(®_pending_beacons_lock); |
| 2122 | |
| 2123 | if (processing) |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2124 | return 0; |
| 2125 | |
| 2126 | reg_beacon = kzalloc(sizeof(struct reg_beacon), gfp); |
| 2127 | if (!reg_beacon) |
| 2128 | return -ENOMEM; |
| 2129 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2130 | 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] | 2131 | beacon_chan->center_freq, |
| 2132 | ieee80211_frequency_to_channel(beacon_chan->center_freq), |
| 2133 | wiphy_name(wiphy)); |
| 2134 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2135 | memcpy(®_beacon->chan, beacon_chan, |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2136 | sizeof(struct ieee80211_channel)); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2137 | |
| 2138 | /* |
| 2139 | * Since we can be called from BH or and non-BH context |
| 2140 | * we must use spin_lock_bh() |
| 2141 | */ |
| 2142 | spin_lock_bh(®_pending_beacons_lock); |
| 2143 | list_add_tail(®_beacon->list, ®_pending_beacons); |
| 2144 | spin_unlock_bh(®_pending_beacons_lock); |
| 2145 | |
| 2146 | schedule_work(®_work); |
| 2147 | |
| 2148 | return 0; |
| 2149 | } |
| 2150 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 2151 | static void print_rd_rules(const struct ieee80211_regdomain *rd) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2152 | { |
| 2153 | unsigned int i; |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 2154 | const struct ieee80211_reg_rule *reg_rule = NULL; |
| 2155 | const struct ieee80211_freq_range *freq_range = NULL; |
| 2156 | const struct ieee80211_power_rule *power_rule = NULL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2157 | |
Luis R. Rodriguez | 6653325 | 2011-12-20 12:23:37 -0800 | [diff] [blame] | 2158 | 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] | 2159 | |
| 2160 | for (i = 0; i < rd->n_reg_rules; i++) { |
| 2161 | reg_rule = &rd->reg_rules[i]; |
| 2162 | freq_range = ®_rule->freq_range; |
| 2163 | power_rule = ®_rule->power_rule; |
| 2164 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2165 | /* |
| 2166 | * There may not be documentation for max antenna gain |
| 2167 | * in certain regions |
| 2168 | */ |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2169 | if (power_rule->max_antenna_gain) |
Luis R. Rodriguez | 6653325 | 2011-12-20 12:23:37 -0800 | [diff] [blame] | 2170 | 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] | 2171 | freq_range->start_freq_khz, |
| 2172 | freq_range->end_freq_khz, |
| 2173 | freq_range->max_bandwidth_khz, |
| 2174 | power_rule->max_antenna_gain, |
| 2175 | power_rule->max_eirp); |
| 2176 | else |
Luis R. Rodriguez | 6653325 | 2011-12-20 12:23:37 -0800 | [diff] [blame] | 2177 | 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] | 2178 | freq_range->start_freq_khz, |
| 2179 | freq_range->end_freq_khz, |
| 2180 | freq_range->max_bandwidth_khz, |
| 2181 | power_rule->max_eirp); |
| 2182 | } |
| 2183 | } |
| 2184 | |
Luis R. Rodriguez | 4c7d398 | 2013-11-13 18:54:02 +0100 | [diff] [blame] | 2185 | bool reg_supported_dfs_region(enum nl80211_dfs_regions dfs_region) |
Luis R. Rodriguez | 8b60b07 | 2011-10-11 10:59:02 -0700 | [diff] [blame] | 2186 | { |
| 2187 | switch (dfs_region) { |
| 2188 | case NL80211_DFS_UNSET: |
| 2189 | case NL80211_DFS_FCC: |
| 2190 | case NL80211_DFS_ETSI: |
| 2191 | case NL80211_DFS_JP: |
| 2192 | return true; |
| 2193 | default: |
| 2194 | REG_DBG_PRINT("Ignoring uknown DFS master region: %d\n", |
| 2195 | dfs_region); |
| 2196 | return false; |
| 2197 | } |
| 2198 | } |
| 2199 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 2200 | static void print_regdomain(const struct ieee80211_regdomain *rd) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2201 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2202 | struct regulatory_request *lr = get_last_request(); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2203 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2204 | if (is_intersected_alpha2(rd->alpha2)) { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2205 | if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 2206 | struct cfg80211_registered_device *rdev; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2207 | rdev = cfg80211_rdev_by_wiphy_idx(lr->wiphy_idx); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 2208 | if (rdev) { |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2209 | pr_info("Current regulatory domain updated by AP to: %c%c\n", |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 2210 | rdev->country_ie_alpha2[0], |
| 2211 | rdev->country_ie_alpha2[1]); |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2212 | } else |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2213 | pr_info("Current regulatory domain intersected:\n"); |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2214 | } else |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2215 | pr_info("Current regulatory domain intersected:\n"); |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2216 | } else if (is_world_regdom(rd->alpha2)) { |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2217 | pr_info("World regulatory domain updated:\n"); |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2218 | } else { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2219 | if (is_unknown_alpha2(rd->alpha2)) |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2220 | 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] | 2221 | else { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2222 | if (reg_request_cell_base(lr)) |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2223 | 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] | 2224 | rd->alpha2[0], rd->alpha2[1]); |
| 2225 | else |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2226 | pr_info("Regulatory domain changed to country: %c%c\n", |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2227 | rd->alpha2[0], rd->alpha2[1]); |
| 2228 | } |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2229 | } |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2230 | |
Luis R. Rodriguez | 3ef121b | 2013-11-13 18:54:05 +0100 | [diff] [blame] | 2231 | pr_info(" DFS Master region: %s", reg_dfs_region_str(rd->dfs_region)); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2232 | print_rd_rules(rd); |
| 2233 | } |
| 2234 | |
Johannes Berg | 2df7816 | 2008-10-28 16:49:41 +0100 | [diff] [blame] | 2235 | static void print_regdomain_info(const struct ieee80211_regdomain *rd) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2236 | { |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2237 | 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] | 2238 | print_rd_rules(rd); |
| 2239 | } |
| 2240 | |
Luis R. Rodriguez | 3b9e5ac | 2013-11-05 09:18:14 -0800 | [diff] [blame] | 2241 | static int reg_set_rd_core(const struct ieee80211_regdomain *rd) |
| 2242 | { |
| 2243 | if (!is_world_regdom(rd->alpha2)) |
| 2244 | return -EINVAL; |
| 2245 | update_world_regdomain(rd); |
| 2246 | return 0; |
| 2247 | } |
| 2248 | |
Luis R. Rodriguez | 84721d4 | 2013-11-05 09:18:15 -0800 | [diff] [blame] | 2249 | static int reg_set_rd_user(const struct ieee80211_regdomain *rd, |
| 2250 | struct regulatory_request *user_request) |
| 2251 | { |
| 2252 | const struct ieee80211_regdomain *intersected_rd = NULL; |
| 2253 | |
| 2254 | if (is_world_regdom(rd->alpha2)) |
| 2255 | return -EINVAL; |
| 2256 | |
| 2257 | if (!regdom_changes(rd->alpha2)) |
| 2258 | return -EALREADY; |
| 2259 | |
| 2260 | if (!is_valid_rd(rd)) { |
| 2261 | pr_err("Invalid regulatory domain detected:\n"); |
| 2262 | print_regdomain_info(rd); |
| 2263 | return -EINVAL; |
| 2264 | } |
| 2265 | |
| 2266 | if (!user_request->intersect) { |
| 2267 | reset_regdomains(false, rd); |
| 2268 | return 0; |
| 2269 | } |
| 2270 | |
| 2271 | intersected_rd = regdom_intersect(rd, get_cfg80211_regdom()); |
| 2272 | if (!intersected_rd) |
| 2273 | return -EINVAL; |
| 2274 | |
| 2275 | kfree(rd); |
| 2276 | rd = NULL; |
| 2277 | reset_regdomains(false, intersected_rd); |
| 2278 | |
| 2279 | return 0; |
| 2280 | } |
| 2281 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2282 | static int reg_set_rd_driver(const struct ieee80211_regdomain *rd, |
| 2283 | struct regulatory_request *driver_request) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2284 | { |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 2285 | const struct ieee80211_regdomain *regd; |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 2286 | const struct ieee80211_regdomain *intersected_rd = NULL; |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2287 | const struct ieee80211_regdomain *tmp; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 2288 | struct wiphy *request_wiphy; |
Johannes Berg | 6913b49 | 2012-12-04 00:48:59 +0100 | [diff] [blame] | 2289 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2290 | if (is_world_regdom(rd->alpha2)) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2291 | return -EINVAL; |
| 2292 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2293 | if (!regdom_changes(rd->alpha2)) |
| 2294 | return -EALREADY; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2295 | |
Luis R. Rodriguez | 8375af3 | 2008-11-12 14:21:57 -0800 | [diff] [blame] | 2296 | if (!is_valid_rd(rd)) { |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2297 | pr_err("Invalid regulatory domain detected:\n"); |
Luis R. Rodriguez | 8375af3 | 2008-11-12 14:21:57 -0800 | [diff] [blame] | 2298 | print_regdomain_info(rd); |
| 2299 | return -EINVAL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2300 | } |
| 2301 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2302 | request_wiphy = wiphy_idx_to_wiphy(driver_request->wiphy_idx); |
| 2303 | if (!request_wiphy) { |
Luis R. Rodriguez | 0bac71a | 2011-11-28 16:47:16 -0500 | [diff] [blame] | 2304 | schedule_delayed_work(®_timeout, 0); |
Johannes Berg | de3584b | 2011-11-21 10:44:00 +0100 | [diff] [blame] | 2305 | return -ENODEV; |
| 2306 | } |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 2307 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2308 | if (!driver_request->intersect) { |
Luis R. Rodriguez | 558f6d3 | 2009-06-08 18:54:37 -0700 | [diff] [blame] | 2309 | if (request_wiphy->regd) |
| 2310 | return -EALREADY; |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 2311 | |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 2312 | regd = reg_copy_regd(rd); |
| 2313 | if (IS_ERR(regd)) |
| 2314 | return PTR_ERR(regd); |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 2315 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2316 | rcu_assign_pointer(request_wiphy->regd, regd); |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 2317 | reset_regdomains(false, rd); |
Luis R. Rodriguez | b8295ac | 2008-11-12 14:21:58 -0800 | [diff] [blame] | 2318 | return 0; |
| 2319 | } |
| 2320 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2321 | intersected_rd = regdom_intersect(rd, get_cfg80211_regdom()); |
| 2322 | if (!intersected_rd) |
| 2323 | return -EINVAL; |
Luis R. Rodriguez | b8295ac | 2008-11-12 14:21:58 -0800 | [diff] [blame] | 2324 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2325 | /* |
| 2326 | * We can trash what CRDA provided now. |
| 2327 | * However if a driver requested this specific regulatory |
| 2328 | * domain we keep it for its private use |
| 2329 | */ |
| 2330 | tmp = get_wiphy_regdom(request_wiphy); |
| 2331 | rcu_assign_pointer(request_wiphy->regd, rd); |
| 2332 | rcu_free_regdom(tmp); |
Luis R. Rodriguez | b8295ac | 2008-11-12 14:21:58 -0800 | [diff] [blame] | 2333 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2334 | rd = NULL; |
Larry Finger | b7566fc | 2013-02-04 15:33:44 -0600 | [diff] [blame] | 2335 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2336 | reset_regdomains(false, intersected_rd); |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 2337 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2338 | return 0; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2339 | } |
| 2340 | |
Luis R. Rodriguez | 0199240 | 2013-11-05 09:18:17 -0800 | [diff] [blame] | 2341 | static int reg_set_rd_country_ie(const struct ieee80211_regdomain *rd, |
| 2342 | struct regulatory_request *country_ie_request) |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2343 | { |
| 2344 | struct wiphy *request_wiphy; |
| 2345 | |
| 2346 | if (!is_alpha2_set(rd->alpha2) && !is_an_alpha2(rd->alpha2) && |
| 2347 | !is_unknown_alpha2(rd->alpha2)) |
| 2348 | return -EINVAL; |
| 2349 | |
| 2350 | /* |
| 2351 | * Lets only bother proceeding on the same alpha2 if the current |
| 2352 | * rd is non static (it means CRDA was present and was used last) |
| 2353 | * and the pending request came in from a country IE |
| 2354 | */ |
| 2355 | |
| 2356 | if (!is_valid_rd(rd)) { |
| 2357 | pr_err("Invalid regulatory domain detected:\n"); |
| 2358 | print_regdomain_info(rd); |
| 2359 | return -EINVAL; |
| 2360 | } |
| 2361 | |
Luis R. Rodriguez | 0199240 | 2013-11-05 09:18:17 -0800 | [diff] [blame] | 2362 | request_wiphy = wiphy_idx_to_wiphy(country_ie_request->wiphy_idx); |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2363 | if (!request_wiphy) { |
| 2364 | schedule_delayed_work(®_timeout, 0); |
| 2365 | return -ENODEV; |
| 2366 | } |
| 2367 | |
Luis R. Rodriguez | 0199240 | 2013-11-05 09:18:17 -0800 | [diff] [blame] | 2368 | if (country_ie_request->intersect) |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2369 | return -EINVAL; |
| 2370 | |
| 2371 | reset_regdomains(false, rd); |
| 2372 | return 0; |
| 2373 | } |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2374 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2375 | /* |
| 2376 | * Use this call to set the current regulatory domain. Conflicts with |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2377 | * multiple drivers can be ironed out later. Caller must've already |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2378 | * kmalloc'd the rd structure. |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2379 | */ |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 2380 | int set_regdom(const struct ieee80211_regdomain *rd) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2381 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2382 | struct regulatory_request *lr; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2383 | int r; |
| 2384 | |
Luis R. Rodriguez | 3b9e5ac | 2013-11-05 09:18:14 -0800 | [diff] [blame] | 2385 | if (!reg_is_valid_request(rd->alpha2)) { |
| 2386 | kfree(rd); |
| 2387 | return -EINVAL; |
| 2388 | } |
| 2389 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2390 | lr = get_last_request(); |
Luis R. Rodriguez | abc7381 | 2009-07-30 17:38:08 -0700 | [diff] [blame] | 2391 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2392 | /* 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] | 2393 | switch (lr->initiator) { |
| 2394 | case NL80211_REGDOM_SET_BY_CORE: |
| 2395 | r = reg_set_rd_core(rd); |
| 2396 | break; |
| 2397 | case NL80211_REGDOM_SET_BY_USER: |
Luis R. Rodriguez | 84721d4 | 2013-11-05 09:18:15 -0800 | [diff] [blame] | 2398 | r = reg_set_rd_user(rd, lr); |
| 2399 | break; |
Luis R. Rodriguez | 3b9e5ac | 2013-11-05 09:18:14 -0800 | [diff] [blame] | 2400 | case NL80211_REGDOM_SET_BY_DRIVER: |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2401 | r = reg_set_rd_driver(rd, lr); |
| 2402 | break; |
Luis R. Rodriguez | 3b9e5ac | 2013-11-05 09:18:14 -0800 | [diff] [blame] | 2403 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
Luis R. Rodriguez | 0199240 | 2013-11-05 09:18:17 -0800 | [diff] [blame] | 2404 | r = reg_set_rd_country_ie(rd, lr); |
Luis R. Rodriguez | 3b9e5ac | 2013-11-05 09:18:14 -0800 | [diff] [blame] | 2405 | break; |
| 2406 | default: |
| 2407 | WARN(1, "invalid initiator %d\n", lr->initiator); |
| 2408 | return -EINVAL; |
| 2409 | } |
| 2410 | |
Johannes Berg | d2372b3 | 2008-10-24 20:32:20 +0200 | [diff] [blame] | 2411 | if (r) { |
Kalle Valo | 9590853 | 2012-07-12 15:33:58 +0300 | [diff] [blame] | 2412 | if (r == -EALREADY) |
| 2413 | reg_set_request_processed(); |
| 2414 | |
Johannes Berg | d2372b3 | 2008-10-24 20:32:20 +0200 | [diff] [blame] | 2415 | kfree(rd); |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2416 | return r; |
Johannes Berg | d2372b3 | 2008-10-24 20:32:20 +0200 | [diff] [blame] | 2417 | } |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2418 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2419 | /* This would make this whole thing pointless */ |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2420 | if (WARN_ON(!lr->intersect && rd != get_cfg80211_regdom())) |
| 2421 | return -EINVAL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2422 | |
| 2423 | /* update all wiphys now with the new established regulatory domain */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2424 | update_all_wiphy_regulatory(lr->initiator); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2425 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2426 | print_regdomain(get_cfg80211_regdom()); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2427 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2428 | nl80211_send_reg_change_event(lr); |
Luis R. Rodriguez | 73d54c9 | 2009-03-09 22:07:42 -0400 | [diff] [blame] | 2429 | |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 2430 | reg_set_request_processed(); |
| 2431 | |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2432 | return 0; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2433 | } |
| 2434 | |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2435 | int reg_device_uevent(struct device *dev, struct kobj_uevent_env *env) |
| 2436 | { |
Johannes Berg | 4a484cf | 2013-01-09 10:22:07 +0100 | [diff] [blame] | 2437 | struct regulatory_request *lr; |
| 2438 | u8 alpha2[2]; |
| 2439 | bool add = false; |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2440 | |
Johannes Berg | 4a484cf | 2013-01-09 10:22:07 +0100 | [diff] [blame] | 2441 | rcu_read_lock(); |
| 2442 | lr = get_last_request(); |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2443 | if (lr && !lr->processed) { |
Johannes Berg | 4a484cf | 2013-01-09 10:22:07 +0100 | [diff] [blame] | 2444 | memcpy(alpha2, lr->alpha2, 2); |
| 2445 | add = true; |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2446 | } |
Johannes Berg | 4a484cf | 2013-01-09 10:22:07 +0100 | [diff] [blame] | 2447 | rcu_read_unlock(); |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2448 | |
Johannes Berg | 4a484cf | 2013-01-09 10:22:07 +0100 | [diff] [blame] | 2449 | if (add) |
| 2450 | return add_uevent_var(env, "COUNTRY=%c%c", |
| 2451 | alpha2[0], alpha2[1]); |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2452 | return 0; |
| 2453 | } |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2454 | |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2455 | void wiphy_regulatory_register(struct wiphy *wiphy) |
| 2456 | { |
Arik Nemtsov | 23df0b7 | 2013-07-21 16:36:48 +0300 | [diff] [blame] | 2457 | struct regulatory_request *lr; |
| 2458 | |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2459 | if (!reg_dev_ignore_cell_hint(wiphy)) |
| 2460 | reg_num_devs_support_basehint++; |
| 2461 | |
Arik Nemtsov | 23df0b7 | 2013-07-21 16:36:48 +0300 | [diff] [blame] | 2462 | lr = get_last_request(); |
| 2463 | wiphy_update_regulatory(wiphy, lr->initiator); |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2464 | } |
| 2465 | |
Luis R. Rodriguez | bfead08 | 2012-07-12 11:49:19 -0700 | [diff] [blame] | 2466 | void wiphy_regulatory_deregister(struct wiphy *wiphy) |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2467 | { |
Luis R. Rodriguez | 0ad8aca | 2009-03-24 21:21:08 -0400 | [diff] [blame] | 2468 | struct wiphy *request_wiphy = NULL; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2469 | struct regulatory_request *lr; |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 2470 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2471 | lr = get_last_request(); |
Luis R. Rodriguez | abc7381 | 2009-07-30 17:38:08 -0700 | [diff] [blame] | 2472 | |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2473 | if (!reg_dev_ignore_cell_hint(wiphy)) |
| 2474 | reg_num_devs_support_basehint--; |
| 2475 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2476 | rcu_free_regdom(get_wiphy_regdom(wiphy)); |
| 2477 | rcu_assign_pointer(wiphy->regd, NULL); |
Chris Wright | 0ef9ccd | 2009-04-24 14:09:31 -0700 | [diff] [blame] | 2478 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2479 | if (lr) |
| 2480 | request_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx); |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 2481 | |
Chris Wright | 0ef9ccd | 2009-04-24 14:09:31 -0700 | [diff] [blame] | 2482 | if (!request_wiphy || request_wiphy != wiphy) |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2483 | return; |
Chris Wright | 0ef9ccd | 2009-04-24 14:09:31 -0700 | [diff] [blame] | 2484 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2485 | lr->wiphy_idx = WIPHY_IDX_INVALID; |
| 2486 | lr->country_ie_env = ENVIRON_ANY; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2487 | } |
| 2488 | |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 2489 | static void reg_timeout_work(struct work_struct *work) |
| 2490 | { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2491 | 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] | 2492 | rtnl_lock(); |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 2493 | restore_regulatory_settings(true); |
Johannes Berg | f77b86d | 2013-06-24 15:43:38 +0200 | [diff] [blame] | 2494 | rtnl_unlock(); |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 2495 | } |
| 2496 | |
Uwe Kleine-König | 2fcc9f7 | 2010-06-18 09:38:55 +0200 | [diff] [blame] | 2497 | int __init regulatory_init(void) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2498 | { |
Luis R. Rodriguez | bcf4f99 | 2009-02-21 00:04:24 -0500 | [diff] [blame] | 2499 | int err = 0; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 2500 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2501 | reg_pdev = platform_device_register_simple("regulatory", 0, NULL, 0); |
| 2502 | if (IS_ERR(reg_pdev)) |
| 2503 | return PTR_ERR(reg_pdev); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 2504 | |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2505 | reg_pdev->dev.type = ®_device_type; |
| 2506 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2507 | spin_lock_init(®_requests_lock); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2508 | spin_lock_init(®_pending_beacons_lock); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2509 | |
Luis R. Rodriguez | 80007ef | 2012-03-23 07:23:31 -0700 | [diff] [blame] | 2510 | reg_regdb_size_check(); |
| 2511 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2512 | rcu_assign_pointer(cfg80211_regdomain, cfg80211_world_regdom); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 2513 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2514 | user_alpha2[0] = '9'; |
| 2515 | user_alpha2[1] = '7'; |
| 2516 | |
Luis R. Rodriguez | ae9e4b0 | 2009-07-14 20:23:15 -0400 | [diff] [blame] | 2517 | /* We always try to get an update for the static regdomain */ |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2518 | err = regulatory_hint_core(cfg80211_world_regdom->alpha2); |
Luis R. Rodriguez | bcf4f99 | 2009-02-21 00:04:24 -0500 | [diff] [blame] | 2519 | if (err) { |
| 2520 | if (err == -ENOMEM) |
| 2521 | return err; |
| 2522 | /* |
| 2523 | * N.B. kobject_uevent_env() can fail mainly for when we're out |
| 2524 | * memory which is handled and propagated appropriately above |
| 2525 | * but it can also fail during a netlink_broadcast() or during |
| 2526 | * early boot for call_usermodehelper(). For now treat these |
| 2527 | * errors as non-fatal. |
| 2528 | */ |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2529 | 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] | 2530 | } |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 2531 | |
Luis R. Rodriguez | ae9e4b0 | 2009-07-14 20:23:15 -0400 | [diff] [blame] | 2532 | /* |
| 2533 | * Finally, if the user set the module parameter treat it |
| 2534 | * as a user hint. |
| 2535 | */ |
| 2536 | if (!is_world_regdom(ieee80211_regdom)) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2537 | regulatory_hint_user(ieee80211_regdom, |
| 2538 | NL80211_USER_REG_HINT_USER); |
Luis R. Rodriguez | ae9e4b0 | 2009-07-14 20:23:15 -0400 | [diff] [blame] | 2539 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2540 | return 0; |
| 2541 | } |
| 2542 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2543 | void regulatory_exit(void) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2544 | { |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2545 | struct regulatory_request *reg_request, *tmp; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2546 | struct reg_beacon *reg_beacon, *btmp; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2547 | |
| 2548 | cancel_work_sync(®_work); |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 2549 | cancel_delayed_work_sync(®_timeout); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2550 | |
Johannes Berg | 9027b14 | 2012-12-03 17:59:24 +0100 | [diff] [blame] | 2551 | /* Lock to suppress warnings */ |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2552 | rtnl_lock(); |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 2553 | reset_regdomains(true, NULL); |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2554 | rtnl_unlock(); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 2555 | |
Luis R. Rodriguez | 58ebacc | 2011-11-08 14:28:06 -0800 | [diff] [blame] | 2556 | dev_set_uevent_suppress(®_pdev->dev, true); |
Johannes Berg | f6037d0 | 2008-10-21 11:01:33 +0200 | [diff] [blame] | 2557 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2558 | platform_device_unregister(reg_pdev); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 2559 | |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 2560 | list_for_each_entry_safe(reg_beacon, btmp, ®_pending_beacons, list) { |
| 2561 | list_del(®_beacon->list); |
| 2562 | kfree(reg_beacon); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2563 | } |
| 2564 | |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 2565 | list_for_each_entry_safe(reg_beacon, btmp, ®_beacon_list, list) { |
| 2566 | list_del(®_beacon->list); |
| 2567 | kfree(reg_beacon); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2568 | } |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2569 | |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 2570 | list_for_each_entry_safe(reg_request, tmp, ®_requests_list, list) { |
| 2571 | list_del(®_request->list); |
| 2572 | kfree(reg_request); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2573 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2574 | } |