Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2002-2005, Instant802 Networks, Inc. |
| 3 | * Copyright 2005-2006, Devicescape Software, Inc. |
| 4 | * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> |
Luis R. Rodriguez | 3b77d5e | 2011-12-20 12:23:38 -0800 | [diff] [blame] | 5 | * Copyright 2008-2011 Luis R. Rodriguez <mcgrof@qca.qualcomm.com> |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 6 | * |
Luis R. Rodriguez | 3b77d5e | 2011-12-20 12:23:38 -0800 | [diff] [blame] | 7 | * Permission to use, copy, modify, and/or distribute this software for any |
| 8 | * purpose with or without fee is hereby granted, provided that the above |
| 9 | * copyright notice and this permission notice appear in all copies. |
| 10 | * |
| 11 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 12 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 13 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 14 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 15 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 16 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 17 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 18 | */ |
| 19 | |
Luis R. Rodriguez | 3b77d5e | 2011-12-20 12:23:38 -0800 | [diff] [blame] | 20 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 21 | /** |
| 22 | * DOC: Wireless regulatory infrastructure |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 23 | * |
| 24 | * The usual implementation is for a driver to read a device EEPROM to |
| 25 | * determine which regulatory domain it should be operating under, then |
| 26 | * looking up the allowable channels in a driver-local table and finally |
| 27 | * registering those channels in the wiphy structure. |
| 28 | * |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 29 | * Another set of compliance enforcement is for drivers to use their |
| 30 | * own compliance limits which can be stored on the EEPROM. The host |
| 31 | * driver or firmware may ensure these are used. |
| 32 | * |
| 33 | * In addition to all this we provide an extra layer of regulatory |
| 34 | * conformance. For drivers which do not have any regulatory |
| 35 | * information CRDA provides the complete regulatory solution. |
| 36 | * For others it provides a community effort on further restrictions |
| 37 | * to enhance compliance. |
| 38 | * |
| 39 | * Note: When number of rules --> infinity we will not be able to |
| 40 | * index on alpha2 any more, instead we'll probably have to |
| 41 | * rely on some SHA1 checksum of the regdomain for example. |
| 42 | * |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 43 | */ |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 44 | |
| 45 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 46 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 47 | #include <linux/kernel.h> |
Paul Gortmaker | bc3b2d7 | 2011-07-15 11:47:34 -0400 | [diff] [blame] | 48 | #include <linux/export.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 49 | #include <linux/slab.h> |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 50 | #include <linux/list.h> |
John W. Linville | c61029c | 2010-08-05 14:26:24 -0400 | [diff] [blame] | 51 | #include <linux/ctype.h> |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 52 | #include <linux/nl80211.h> |
| 53 | #include <linux/platform_device.h> |
Paul Gortmaker | d9b9384 | 2011-09-18 13:21:27 -0400 | [diff] [blame] | 54 | #include <linux/moduleparam.h> |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 55 | #include <net/cfg80211.h> |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 56 | #include "core.h" |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 57 | #include "reg.h" |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 58 | #include "regdb.h" |
Luis R. Rodriguez | 73d54c9 | 2009-03-09 22:07:42 -0400 | [diff] [blame] | 59 | #include "nl80211.h" |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 60 | |
Luis R. Rodriguez | 4113f75 | 2010-01-04 11:50:11 -0500 | [diff] [blame] | 61 | #ifdef CONFIG_CFG80211_REG_DEBUG |
Joe Perches | 12c5ffb | 2011-07-29 14:51:25 -0700 | [diff] [blame] | 62 | #define REG_DBG_PRINT(format, args...) \ |
| 63 | printk(KERN_DEBUG pr_fmt(format), ##args) |
Luis R. Rodriguez | 4113f75 | 2010-01-04 11:50:11 -0500 | [diff] [blame] | 64 | #else |
John W. Linville | 8271195 | 2010-01-05 17:57:20 -0500 | [diff] [blame] | 65 | #define REG_DBG_PRINT(args...) |
Luis R. Rodriguez | 4113f75 | 2010-01-04 11:50:11 -0500 | [diff] [blame] | 66 | #endif |
| 67 | |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 68 | enum reg_request_treatment { |
| 69 | REG_REQ_OK, |
| 70 | REG_REQ_IGNORE, |
| 71 | REG_REQ_INTERSECT, |
| 72 | REG_REQ_ALREADY_SET, |
| 73 | }; |
| 74 | |
Luis R. Rodriguez | a042994 | 2011-11-28 16:47:15 -0500 | [diff] [blame] | 75 | static struct regulatory_request core_request_world = { |
| 76 | .initiator = NL80211_REGDOM_SET_BY_CORE, |
| 77 | .alpha2[0] = '0', |
| 78 | .alpha2[1] = '0', |
| 79 | .intersect = false, |
| 80 | .processed = true, |
| 81 | .country_ie_env = ENVIRON_ANY, |
| 82 | }; |
| 83 | |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 84 | /* |
| 85 | * Receipt of information from last regulatory request, |
| 86 | * protected by RTNL (and can be accessed with RCU protection) |
| 87 | */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 88 | static struct regulatory_request __rcu *last_request = |
| 89 | (void __rcu *)&core_request_world; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 90 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 91 | /* To trigger userspace events */ |
| 92 | static struct platform_device *reg_pdev; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 93 | |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 94 | static struct device_type reg_device_type = { |
| 95 | .uevent = reg_device_uevent, |
| 96 | }; |
| 97 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 98 | /* |
| 99 | * Central wireless core regulatory domains, we only need two, |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 100 | * the current one and a world regulatory domain in case we have no |
Johannes Berg | e8da2bb | 2012-12-03 23:00:08 +0100 | [diff] [blame] | 101 | * information to give us an alpha2. |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 102 | * (protected by RTNL, can be read under RCU) |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 103 | */ |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 104 | const struct ieee80211_regdomain __rcu *cfg80211_regdomain; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 105 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 106 | /* |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 107 | * Number of devices that registered to the core |
| 108 | * that support cellular base station regulatory hints |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 109 | * (protected by RTNL) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 110 | */ |
| 111 | static int reg_num_devs_support_basehint; |
| 112 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 113 | static const struct ieee80211_regdomain *get_cfg80211_regdom(void) |
| 114 | { |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 115 | return rtnl_dereference(cfg80211_regdomain); |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 116 | } |
| 117 | |
| 118 | static const struct ieee80211_regdomain *get_wiphy_regdom(struct wiphy *wiphy) |
| 119 | { |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 120 | return rtnl_dereference(wiphy->regd); |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 121 | } |
| 122 | |
| 123 | static void rcu_free_regdom(const struct ieee80211_regdomain *r) |
| 124 | { |
| 125 | if (!r) |
| 126 | return; |
| 127 | kfree_rcu((struct ieee80211_regdomain *)r, rcu_head); |
| 128 | } |
| 129 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 130 | static struct regulatory_request *get_last_request(void) |
| 131 | { |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 132 | return rcu_dereference_rtnl(last_request); |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 133 | } |
| 134 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 135 | /* Used to queue up regulatory hints */ |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 136 | static LIST_HEAD(reg_requests_list); |
| 137 | static spinlock_t reg_requests_lock; |
| 138 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 139 | /* Used to queue up beacon hints for review */ |
| 140 | static LIST_HEAD(reg_pending_beacons); |
| 141 | static spinlock_t reg_pending_beacons_lock; |
| 142 | |
| 143 | /* Used to keep track of processed beacon hints */ |
| 144 | static LIST_HEAD(reg_beacon_list); |
| 145 | |
| 146 | struct reg_beacon { |
| 147 | struct list_head list; |
| 148 | struct ieee80211_channel chan; |
| 149 | }; |
| 150 | |
Luis R. Rodriguez | f333a7a | 2010-11-17 21:46:07 -0800 | [diff] [blame] | 151 | static void reg_todo(struct work_struct *work); |
| 152 | static DECLARE_WORK(reg_work, reg_todo); |
| 153 | |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 154 | static void reg_timeout_work(struct work_struct *work); |
| 155 | static DECLARE_DELAYED_WORK(reg_timeout, reg_timeout_work); |
| 156 | |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 157 | /* We keep a static world regulatory domain in case of the absence of CRDA */ |
| 158 | static const struct ieee80211_regdomain world_regdom = { |
Vladimir Kondratiev | 90cdc6d | 2012-07-02 09:32:34 +0300 | [diff] [blame] | 159 | .n_reg_rules = 6, |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 160 | .alpha2 = "00", |
| 161 | .reg_rules = { |
Luis R. Rodriguez | 68798a6 | 2009-02-21 00:20:37 -0500 | [diff] [blame] | 162 | /* IEEE 802.11b/g, channels 1..11 */ |
| 163 | REG_RULE(2412-10, 2462+10, 40, 6, 20, 0), |
Johannes Berg | 43c771a | 2012-11-12 10:51:34 +0100 | [diff] [blame] | 164 | /* IEEE 802.11b/g, channels 12..13. */ |
| 165 | REG_RULE(2467-10, 2472+10, 40, 6, 20, |
Luis R. Rodriguez | 3fc71f7 | 2009-02-21 00:20:38 -0500 | [diff] [blame] | 166 | NL80211_RRF_PASSIVE_SCAN | |
| 167 | NL80211_RRF_NO_IBSS), |
Luis R. Rodriguez | 611b6a8 | 2009-03-05 21:19:21 -0800 | [diff] [blame] | 168 | /* IEEE 802.11 channel 14 - Only JP enables |
| 169 | * this and for 802.11b only */ |
| 170 | REG_RULE(2484-10, 2484+10, 20, 6, 20, |
| 171 | NL80211_RRF_PASSIVE_SCAN | |
| 172 | NL80211_RRF_NO_IBSS | |
| 173 | NL80211_RRF_NO_OFDM), |
| 174 | /* IEEE 802.11a, channel 36..48 */ |
Johannes Berg | 131a19b | 2013-03-04 20:54:46 +0100 | [diff] [blame] | 175 | REG_RULE(5180-10, 5240+10, 160, 6, 20, |
Luis R. Rodriguez | 611b6a8 | 2009-03-05 21:19:21 -0800 | [diff] [blame] | 176 | NL80211_RRF_PASSIVE_SCAN | |
| 177 | NL80211_RRF_NO_IBSS), |
Luis R. Rodriguez | 3fc71f7 | 2009-02-21 00:20:38 -0500 | [diff] [blame] | 178 | |
Johannes Berg | 131a19b | 2013-03-04 20:54:46 +0100 | [diff] [blame] | 179 | /* IEEE 802.11a, channel 52..64 - DFS required */ |
| 180 | REG_RULE(5260-10, 5320+10, 160, 6, 20, |
| 181 | NL80211_RRF_PASSIVE_SCAN | |
| 182 | NL80211_RRF_NO_IBSS | |
| 183 | NL80211_RRF_DFS), |
| 184 | |
| 185 | /* IEEE 802.11a, channel 100..144 - DFS required */ |
| 186 | REG_RULE(5500-10, 5720+10, 160, 6, 20, |
| 187 | NL80211_RRF_PASSIVE_SCAN | |
| 188 | NL80211_RRF_NO_IBSS | |
| 189 | NL80211_RRF_DFS), |
Luis R. Rodriguez | 3fc71f7 | 2009-02-21 00:20:38 -0500 | [diff] [blame] | 190 | |
| 191 | /* IEEE 802.11a, channel 149..165 */ |
Johannes Berg | 8ab9d85 | 2012-12-03 22:09:22 +0100 | [diff] [blame] | 192 | REG_RULE(5745-10, 5825+10, 80, 6, 20, |
Luis R. Rodriguez | 3fc71f7 | 2009-02-21 00:20:38 -0500 | [diff] [blame] | 193 | NL80211_RRF_PASSIVE_SCAN | |
| 194 | NL80211_RRF_NO_IBSS), |
Vladimir Kondratiev | 90cdc6d | 2012-07-02 09:32:34 +0300 | [diff] [blame] | 195 | |
| 196 | /* IEEE 802.11ad (60gHz), channels 1..3 */ |
| 197 | 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] | 198 | } |
| 199 | }; |
| 200 | |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 201 | /* protected by RTNL */ |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 202 | static const struct ieee80211_regdomain *cfg80211_world_regdom = |
| 203 | &world_regdom; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 204 | |
Luis R. Rodriguez | 6ee7d33 | 2009-03-20 23:53:06 -0400 | [diff] [blame] | 205 | static char *ieee80211_regdom = "00"; |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 206 | static char user_alpha2[2]; |
Luis R. Rodriguez | 6ee7d33 | 2009-03-20 23:53:06 -0400 | [diff] [blame] | 207 | |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 208 | module_param(ieee80211_regdom, charp, 0444); |
| 209 | MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain code"); |
| 210 | |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 211 | static void reset_regdomains(bool full_reset, |
| 212 | const struct ieee80211_regdomain *new_regdom) |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 213 | { |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 214 | const struct ieee80211_regdomain *r; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 215 | struct regulatory_request *lr; |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 216 | |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 217 | ASSERT_RTNL(); |
Johannes Berg | e8da2bb | 2012-12-03 23:00:08 +0100 | [diff] [blame] | 218 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 219 | r = get_cfg80211_regdom(); |
| 220 | |
Johannes Berg | 942b25c | 2008-09-15 11:26:47 +0200 | [diff] [blame] | 221 | /* avoid freeing static information or freeing something twice */ |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 222 | if (r == cfg80211_world_regdom) |
| 223 | r = NULL; |
Johannes Berg | 942b25c | 2008-09-15 11:26:47 +0200 | [diff] [blame] | 224 | if (cfg80211_world_regdom == &world_regdom) |
| 225 | cfg80211_world_regdom = NULL; |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 226 | if (r == &world_regdom) |
| 227 | r = NULL; |
Johannes Berg | 942b25c | 2008-09-15 11:26:47 +0200 | [diff] [blame] | 228 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 229 | rcu_free_regdom(r); |
| 230 | rcu_free_regdom(cfg80211_world_regdom); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 231 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 232 | cfg80211_world_regdom = &world_regdom; |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 233 | rcu_assign_pointer(cfg80211_regdomain, new_regdom); |
Luis R. Rodriguez | a042994 | 2011-11-28 16:47:15 -0500 | [diff] [blame] | 234 | |
| 235 | if (!full_reset) |
| 236 | return; |
| 237 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 238 | lr = get_last_request(); |
| 239 | if (lr != &core_request_world && lr) |
| 240 | kfree_rcu(lr, rcu_head); |
| 241 | rcu_assign_pointer(last_request, &core_request_world); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 242 | } |
| 243 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 244 | /* |
| 245 | * Dynamic world regulatory domain requested by the wireless |
| 246 | * core upon initialization |
| 247 | */ |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 248 | static void update_world_regdomain(const struct ieee80211_regdomain *rd) |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 249 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 250 | struct regulatory_request *lr; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 251 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 252 | lr = get_last_request(); |
| 253 | |
| 254 | WARN_ON(!lr); |
Johannes Berg | e8da2bb | 2012-12-03 23:00:08 +0100 | [diff] [blame] | 255 | |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 256 | reset_regdomains(false, rd); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 257 | |
| 258 | cfg80211_world_regdom = rd; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 259 | } |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 260 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 261 | bool is_world_regdom(const char *alpha2) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 262 | { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 263 | if (!alpha2) |
| 264 | return false; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 265 | return alpha2[0] == '0' && alpha2[1] == '0'; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 266 | } |
| 267 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 268 | static bool is_alpha2_set(const char *alpha2) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 269 | { |
| 270 | if (!alpha2) |
| 271 | return false; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 272 | return alpha2[0] && alpha2[1]; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 273 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 274 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 275 | static bool is_unknown_alpha2(const char *alpha2) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 276 | { |
| 277 | if (!alpha2) |
| 278 | return false; |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 279 | /* |
| 280 | * Special case where regulatory domain was built by driver |
| 281 | * but a specific alpha2 cannot be determined |
| 282 | */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 283 | return alpha2[0] == '9' && alpha2[1] == '9'; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 284 | } |
| 285 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 286 | static bool is_intersected_alpha2(const char *alpha2) |
| 287 | { |
| 288 | if (!alpha2) |
| 289 | return false; |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 290 | /* |
| 291 | * Special case where regulatory domain is the |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 292 | * result of an intersection between two regulatory domain |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 293 | * structures |
| 294 | */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 295 | return alpha2[0] == '9' && alpha2[1] == '8'; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 296 | } |
| 297 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 298 | static bool is_an_alpha2(const char *alpha2) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 299 | { |
| 300 | if (!alpha2) |
| 301 | return false; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 302 | return isalpha(alpha2[0]) && isalpha(alpha2[1]); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 303 | } |
| 304 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 305 | 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] | 306 | { |
| 307 | if (!alpha2_x || !alpha2_y) |
| 308 | return false; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 309 | 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] | 310 | } |
| 311 | |
Luis R. Rodriguez | 69b1572 | 2009-02-21 00:04:33 -0500 | [diff] [blame] | 312 | static bool regdom_changes(const char *alpha2) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 313 | { |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 314 | const struct ieee80211_regdomain *r = get_cfg80211_regdom(); |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 315 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 316 | if (!r) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 317 | return true; |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 318 | return !alpha2_equal(r->alpha2, alpha2); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 319 | } |
| 320 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 321 | /* |
| 322 | * The NL80211_REGDOM_SET_BY_USER regdom alpha2 is cached, this lets |
| 323 | * you know if a valid regulatory hint with NL80211_REGDOM_SET_BY_USER |
| 324 | * has ever been issued. |
| 325 | */ |
| 326 | static bool is_user_regdom_saved(void) |
| 327 | { |
| 328 | if (user_alpha2[0] == '9' && user_alpha2[1] == '7') |
| 329 | return false; |
| 330 | |
| 331 | /* This would indicate a mistake on the design */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 332 | 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] | 333 | "Unexpected user alpha2: %c%c\n", |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 334 | user_alpha2[0], user_alpha2[1])) |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 335 | return false; |
| 336 | |
| 337 | return true; |
| 338 | } |
| 339 | |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 340 | static const struct ieee80211_regdomain * |
| 341 | reg_copy_regd(const struct ieee80211_regdomain *src_regd) |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 342 | { |
| 343 | struct ieee80211_regdomain *regd; |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 344 | int size_of_regd; |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 345 | unsigned int i; |
| 346 | |
Johannes Berg | 82f2085 | 2012-12-04 12:49:16 +0100 | [diff] [blame] | 347 | size_of_regd = |
| 348 | sizeof(struct ieee80211_regdomain) + |
| 349 | src_regd->n_reg_rules * sizeof(struct ieee80211_reg_rule); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 350 | |
| 351 | regd = kzalloc(size_of_regd, GFP_KERNEL); |
| 352 | if (!regd) |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 353 | return ERR_PTR(-ENOMEM); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 354 | |
| 355 | memcpy(regd, src_regd, sizeof(struct ieee80211_regdomain)); |
| 356 | |
| 357 | for (i = 0; i < src_regd->n_reg_rules; i++) |
| 358 | memcpy(®d->reg_rules[i], &src_regd->reg_rules[i], |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 359 | sizeof(struct ieee80211_reg_rule)); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 360 | |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 361 | return regd; |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 362 | } |
| 363 | |
| 364 | #ifdef CONFIG_CFG80211_INTERNAL_REGDB |
| 365 | struct reg_regdb_search_request { |
| 366 | char alpha2[2]; |
| 367 | struct list_head list; |
| 368 | }; |
| 369 | |
| 370 | static LIST_HEAD(reg_regdb_search_list); |
John W. Linville | 368d06f | 2010-03-16 15:40:59 -0400 | [diff] [blame] | 371 | static DEFINE_MUTEX(reg_regdb_search_mutex); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 372 | |
| 373 | static void reg_regdb_search(struct work_struct *work) |
| 374 | { |
| 375 | struct reg_regdb_search_request *request; |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 376 | const struct ieee80211_regdomain *curdom, *regdom = NULL; |
| 377 | int i; |
Luis R. Rodriguez | a85d0d7 | 2012-09-14 15:36:57 -0700 | [diff] [blame] | 378 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 379 | rtnl_lock(); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 380 | |
John W. Linville | 368d06f | 2010-03-16 15:40:59 -0400 | [diff] [blame] | 381 | mutex_lock(®_regdb_search_mutex); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 382 | while (!list_empty(®_regdb_search_list)) { |
| 383 | request = list_first_entry(®_regdb_search_list, |
| 384 | struct reg_regdb_search_request, |
| 385 | list); |
| 386 | list_del(&request->list); |
| 387 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 388 | for (i = 0; i < reg_regdb_size; i++) { |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 389 | curdom = reg_regdb[i]; |
| 390 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 391 | if (alpha2_equal(request->alpha2, curdom->alpha2)) { |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 392 | regdom = reg_copy_regd(curdom); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 393 | break; |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | kfree(request); |
| 398 | } |
John W. Linville | 368d06f | 2010-03-16 15:40:59 -0400 | [diff] [blame] | 399 | mutex_unlock(®_regdb_search_mutex); |
Luis R. Rodriguez | a85d0d7 | 2012-09-14 15:36:57 -0700 | [diff] [blame] | 400 | |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 401 | if (!IS_ERR_OR_NULL(regdom)) |
Luis R. Rodriguez | a85d0d7 | 2012-09-14 15:36:57 -0700 | [diff] [blame] | 402 | set_regdom(regdom); |
| 403 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 404 | rtnl_unlock(); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 405 | } |
| 406 | |
| 407 | static DECLARE_WORK(reg_regdb_work, reg_regdb_search); |
| 408 | |
| 409 | static void reg_regdb_query(const char *alpha2) |
| 410 | { |
| 411 | struct reg_regdb_search_request *request; |
| 412 | |
| 413 | if (!alpha2) |
| 414 | return; |
| 415 | |
| 416 | request = kzalloc(sizeof(struct reg_regdb_search_request), GFP_KERNEL); |
| 417 | if (!request) |
| 418 | return; |
| 419 | |
| 420 | memcpy(request->alpha2, alpha2, 2); |
| 421 | |
John W. Linville | 368d06f | 2010-03-16 15:40:59 -0400 | [diff] [blame] | 422 | mutex_lock(®_regdb_search_mutex); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 423 | list_add_tail(&request->list, ®_regdb_search_list); |
John W. Linville | 368d06f | 2010-03-16 15:40:59 -0400 | [diff] [blame] | 424 | mutex_unlock(®_regdb_search_mutex); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 425 | |
| 426 | schedule_work(®_regdb_work); |
| 427 | } |
Luis R. Rodriguez | 80007ef | 2012-03-23 07:23:31 -0700 | [diff] [blame] | 428 | |
| 429 | /* Feel free to add any other sanity checks here */ |
| 430 | static void reg_regdb_size_check(void) |
| 431 | { |
| 432 | /* We should ideally BUILD_BUG_ON() but then random builds would fail */ |
| 433 | WARN_ONCE(!reg_regdb_size, "db.txt is empty, you should update it..."); |
| 434 | } |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 435 | #else |
Luis R. Rodriguez | 80007ef | 2012-03-23 07:23:31 -0700 | [diff] [blame] | 436 | static inline void reg_regdb_size_check(void) {} |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 437 | static inline void reg_regdb_query(const char *alpha2) {} |
| 438 | #endif /* CONFIG_CFG80211_INTERNAL_REGDB */ |
| 439 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 440 | /* |
| 441 | * 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] | 442 | * basis in userspace. Country information is filled in by |
| 443 | * reg_device_uevent |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 444 | */ |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 445 | static int call_crda(const char *alpha2) |
| 446 | { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 447 | if (!is_world_regdom((char *) alpha2)) |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 448 | pr_info("Calling CRDA for country: %c%c\n", |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 449 | alpha2[0], alpha2[1]); |
| 450 | else |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 451 | pr_info("Calling CRDA to update world regulatory domain\n"); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 452 | |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 453 | /* query internal regulatory database (if it exists) */ |
| 454 | reg_regdb_query(alpha2); |
| 455 | |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 456 | return kobject_uevent(®_pdev->dev.kobj, KOBJ_CHANGE); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 457 | } |
| 458 | |
Johannes Berg | 6913b49 | 2012-12-04 00:48:59 +0100 | [diff] [blame] | 459 | static bool reg_is_valid_request(const char *alpha2) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 460 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 461 | struct regulatory_request *lr = get_last_request(); |
Luis R. Rodriguez | 61405e9 | 2009-05-13 17:04:41 -0400 | [diff] [blame] | 462 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 463 | if (!lr || lr->processed) |
Johannes Berg | f6037d0 | 2008-10-21 11:01:33 +0200 | [diff] [blame] | 464 | return false; |
| 465 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 466 | return alpha2_equal(lr->alpha2, alpha2); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 467 | } |
| 468 | |
| 469 | /* Sanity check on a regulatory rule */ |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 470 | 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] | 471 | { |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 472 | const struct ieee80211_freq_range *freq_range = &rule->freq_range; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 473 | u32 freq_diff; |
| 474 | |
Luis R. Rodriguez | 91e9900 | 2008-11-12 14:21:55 -0800 | [diff] [blame] | 475 | 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] | 476 | return false; |
| 477 | |
| 478 | if (freq_range->start_freq_khz > freq_range->end_freq_khz) |
| 479 | return false; |
| 480 | |
| 481 | freq_diff = freq_range->end_freq_khz - freq_range->start_freq_khz; |
| 482 | |
Roel Kluin | bd05f28 | 2009-03-03 22:55:21 +0100 | [diff] [blame] | 483 | if (freq_range->end_freq_khz <= freq_range->start_freq_khz || |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 484 | freq_range->max_bandwidth_khz > freq_diff) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 485 | return false; |
| 486 | |
| 487 | return true; |
| 488 | } |
| 489 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 490 | static bool is_valid_rd(const struct ieee80211_regdomain *rd) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 491 | { |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 492 | const struct ieee80211_reg_rule *reg_rule = NULL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 493 | unsigned int i; |
| 494 | |
| 495 | if (!rd->n_reg_rules) |
| 496 | return false; |
| 497 | |
Luis R. Rodriguez | 88dc1c3 | 2008-11-12 14:22:01 -0800 | [diff] [blame] | 498 | if (WARN_ON(rd->n_reg_rules > NL80211_MAX_SUPP_REG_RULES)) |
| 499 | return false; |
| 500 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 501 | for (i = 0; i < rd->n_reg_rules; i++) { |
| 502 | reg_rule = &rd->reg_rules[i]; |
| 503 | if (!is_valid_reg_rule(reg_rule)) |
| 504 | return false; |
| 505 | } |
| 506 | |
| 507 | return true; |
| 508 | } |
| 509 | |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 510 | 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] | 511 | u32 center_freq_khz, u32 bw_khz) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 512 | { |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 513 | u32 start_freq_khz, end_freq_khz; |
| 514 | |
| 515 | start_freq_khz = center_freq_khz - (bw_khz/2); |
| 516 | end_freq_khz = center_freq_khz + (bw_khz/2); |
| 517 | |
| 518 | if (start_freq_khz >= freq_range->start_freq_khz && |
| 519 | end_freq_khz <= freq_range->end_freq_khz) |
| 520 | return true; |
| 521 | |
| 522 | return false; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 523 | } |
| 524 | |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 525 | /** |
| 526 | * freq_in_rule_band - tells us if a frequency is in a frequency band |
| 527 | * @freq_range: frequency rule we want to query |
| 528 | * @freq_khz: frequency we are inquiring about |
| 529 | * |
| 530 | * This lets us know if a specific frequency rule is or is not relevant to |
| 531 | * a specific frequency's band. Bands are device specific and artificial |
Vladimir Kondratiev | 64629b9 | 2012-09-23 09:49:54 +0200 | [diff] [blame] | 532 | * definitions (the "2.4 GHz band", the "5 GHz band" and the "60GHz band"), |
| 533 | * however it is safe for now to assume that a frequency rule should not be |
| 534 | * part of a frequency's band if the start freq or end freq are off by more |
| 535 | * than 2 GHz for the 2.4 and 5 GHz bands, and by more than 10 GHz for the |
| 536 | * 60 GHz band. |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 537 | * This resolution can be lowered and should be considered as we add |
| 538 | * regulatory rule support for other "bands". |
| 539 | **/ |
| 540 | 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] | 541 | u32 freq_khz) |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 542 | { |
| 543 | #define ONE_GHZ_IN_KHZ 1000000 |
Vladimir Kondratiev | 64629b9 | 2012-09-23 09:49:54 +0200 | [diff] [blame] | 544 | /* |
| 545 | * From 802.11ad: directional multi-gigabit (DMG): |
| 546 | * Pertaining to operation in a frequency band containing a channel |
| 547 | * with the Channel starting frequency above 45 GHz. |
| 548 | */ |
| 549 | u32 limit = freq_khz > 45 * ONE_GHZ_IN_KHZ ? |
| 550 | 10 * ONE_GHZ_IN_KHZ : 2 * ONE_GHZ_IN_KHZ; |
| 551 | if (abs(freq_khz - freq_range->start_freq_khz) <= limit) |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 552 | return true; |
Vladimir Kondratiev | 64629b9 | 2012-09-23 09:49:54 +0200 | [diff] [blame] | 553 | if (abs(freq_khz - freq_range->end_freq_khz) <= limit) |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 554 | return true; |
| 555 | return false; |
| 556 | #undef ONE_GHZ_IN_KHZ |
| 557 | } |
| 558 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 559 | /* |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 560 | * Helper for regdom_intersect(), this does the real |
| 561 | * mathematical intersection fun |
| 562 | */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 563 | static int reg_rules_intersect(const struct ieee80211_reg_rule *rule1, |
| 564 | const struct ieee80211_reg_rule *rule2, |
| 565 | struct ieee80211_reg_rule *intersected_rule) |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 566 | { |
| 567 | const struct ieee80211_freq_range *freq_range1, *freq_range2; |
| 568 | struct ieee80211_freq_range *freq_range; |
| 569 | const struct ieee80211_power_rule *power_rule1, *power_rule2; |
| 570 | struct ieee80211_power_rule *power_rule; |
| 571 | u32 freq_diff; |
| 572 | |
| 573 | freq_range1 = &rule1->freq_range; |
| 574 | freq_range2 = &rule2->freq_range; |
| 575 | freq_range = &intersected_rule->freq_range; |
| 576 | |
| 577 | power_rule1 = &rule1->power_rule; |
| 578 | power_rule2 = &rule2->power_rule; |
| 579 | power_rule = &intersected_rule->power_rule; |
| 580 | |
| 581 | freq_range->start_freq_khz = max(freq_range1->start_freq_khz, |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 582 | freq_range2->start_freq_khz); |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 583 | freq_range->end_freq_khz = min(freq_range1->end_freq_khz, |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 584 | freq_range2->end_freq_khz); |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 585 | freq_range->max_bandwidth_khz = min(freq_range1->max_bandwidth_khz, |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 586 | freq_range2->max_bandwidth_khz); |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 587 | |
| 588 | freq_diff = freq_range->end_freq_khz - freq_range->start_freq_khz; |
| 589 | if (freq_range->max_bandwidth_khz > freq_diff) |
| 590 | freq_range->max_bandwidth_khz = freq_diff; |
| 591 | |
| 592 | power_rule->max_eirp = min(power_rule1->max_eirp, |
| 593 | power_rule2->max_eirp); |
| 594 | power_rule->max_antenna_gain = min(power_rule1->max_antenna_gain, |
| 595 | power_rule2->max_antenna_gain); |
| 596 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 597 | intersected_rule->flags = rule1->flags | rule2->flags; |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 598 | |
| 599 | if (!is_valid_reg_rule(intersected_rule)) |
| 600 | return -EINVAL; |
| 601 | |
| 602 | return 0; |
| 603 | } |
| 604 | |
| 605 | /** |
| 606 | * regdom_intersect - do the intersection between two regulatory domains |
| 607 | * @rd1: first regulatory domain |
| 608 | * @rd2: second regulatory domain |
| 609 | * |
| 610 | * Use this function to get the intersection between two regulatory domains. |
| 611 | * Once completed we will mark the alpha2 for the rd as intersected, "98", |
| 612 | * as no one single alpha2 can represent this regulatory domain. |
| 613 | * |
| 614 | * Returns a pointer to the regulatory domain structure which will hold the |
| 615 | * resulting intersection of rules between rd1 and rd2. We will |
| 616 | * kzalloc() this structure for you. |
| 617 | */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 618 | static struct ieee80211_regdomain * |
| 619 | regdom_intersect(const struct ieee80211_regdomain *rd1, |
| 620 | const struct ieee80211_regdomain *rd2) |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 621 | { |
| 622 | int r, size_of_regd; |
| 623 | unsigned int x, y; |
| 624 | unsigned int num_rules = 0, rule_idx = 0; |
| 625 | const struct ieee80211_reg_rule *rule1, *rule2; |
| 626 | struct ieee80211_reg_rule *intersected_rule; |
| 627 | struct ieee80211_regdomain *rd; |
| 628 | /* This is just a dummy holder to help us count */ |
Johannes Berg | 74f53cd | 2012-12-06 17:26:17 +0100 | [diff] [blame] | 629 | struct ieee80211_reg_rule dummy_rule; |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 630 | |
| 631 | if (!rd1 || !rd2) |
| 632 | return NULL; |
| 633 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 634 | /* |
| 635 | * 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] | 636 | * build them. This is to so we can malloc() and free() a |
| 637 | * regdomain once. The reason we use reg_rules_intersect() here |
| 638 | * 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] | 639 | * All rules that do check out OK are valid. |
| 640 | */ |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 641 | |
| 642 | for (x = 0; x < rd1->n_reg_rules; x++) { |
| 643 | rule1 = &rd1->reg_rules[x]; |
| 644 | for (y = 0; y < rd2->n_reg_rules; y++) { |
| 645 | rule2 = &rd2->reg_rules[y]; |
Johannes Berg | 74f53cd | 2012-12-06 17:26:17 +0100 | [diff] [blame] | 646 | if (!reg_rules_intersect(rule1, rule2, &dummy_rule)) |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 647 | num_rules++; |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 648 | } |
| 649 | } |
| 650 | |
| 651 | if (!num_rules) |
| 652 | return NULL; |
| 653 | |
| 654 | size_of_regd = sizeof(struct ieee80211_regdomain) + |
Johannes Berg | 82f2085 | 2012-12-04 12:49:16 +0100 | [diff] [blame] | 655 | num_rules * sizeof(struct ieee80211_reg_rule); |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 656 | |
| 657 | rd = kzalloc(size_of_regd, GFP_KERNEL); |
| 658 | if (!rd) |
| 659 | return NULL; |
| 660 | |
Johannes Berg | 8a57fff | 2012-12-06 17:03:17 +0100 | [diff] [blame] | 661 | 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] | 662 | rule1 = &rd1->reg_rules[x]; |
Johannes Berg | 8a57fff | 2012-12-06 17:03:17 +0100 | [diff] [blame] | 663 | 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] | 664 | rule2 = &rd2->reg_rules[y]; |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 665 | /* |
| 666 | * This time around instead of using the stack lets |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 667 | * write to the target rule directly saving ourselves |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 668 | * a memcpy() |
| 669 | */ |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 670 | intersected_rule = &rd->reg_rules[rule_idx]; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 671 | r = reg_rules_intersect(rule1, rule2, intersected_rule); |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 672 | /* |
| 673 | * No need to memset here the intersected rule here as |
| 674 | * we're not using the stack anymore |
| 675 | */ |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 676 | if (r) |
| 677 | continue; |
| 678 | rule_idx++; |
| 679 | } |
| 680 | } |
| 681 | |
| 682 | if (rule_idx != num_rules) { |
| 683 | kfree(rd); |
| 684 | return NULL; |
| 685 | } |
| 686 | |
| 687 | rd->n_reg_rules = num_rules; |
| 688 | rd->alpha2[0] = '9'; |
| 689 | rd->alpha2[1] = '8'; |
| 690 | |
| 691 | return rd; |
| 692 | } |
| 693 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 694 | /* |
| 695 | * XXX: add support for the rest of enum nl80211_reg_rule_flags, we may |
| 696 | * want to just have the channel structure use these |
| 697 | */ |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 698 | static u32 map_regdom_flags(u32 rd_flags) |
| 699 | { |
| 700 | u32 channel_flags = 0; |
| 701 | if (rd_flags & NL80211_RRF_PASSIVE_SCAN) |
| 702 | channel_flags |= IEEE80211_CHAN_PASSIVE_SCAN; |
| 703 | if (rd_flags & NL80211_RRF_NO_IBSS) |
| 704 | channel_flags |= IEEE80211_CHAN_NO_IBSS; |
| 705 | if (rd_flags & NL80211_RRF_DFS) |
| 706 | channel_flags |= IEEE80211_CHAN_RADAR; |
Seth Forshee | 03f6b08 | 2012-08-01 15:58:42 -0500 | [diff] [blame] | 707 | if (rd_flags & NL80211_RRF_NO_OFDM) |
| 708 | channel_flags |= IEEE80211_CHAN_NO_OFDM; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 709 | return channel_flags; |
| 710 | } |
| 711 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 712 | static const struct ieee80211_reg_rule * |
| 713 | freq_reg_info_regd(struct wiphy *wiphy, u32 center_freq, |
| 714 | const struct ieee80211_regdomain *regd) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 715 | { |
| 716 | int i; |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 717 | bool band_rule_found = false; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 718 | bool bw_fits = false; |
| 719 | |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 720 | if (!regd) |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 721 | return ERR_PTR(-EINVAL); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 722 | |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 723 | for (i = 0; i < regd->n_reg_rules; i++) { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 724 | const struct ieee80211_reg_rule *rr; |
| 725 | const struct ieee80211_freq_range *fr = NULL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 726 | |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 727 | rr = ®d->reg_rules[i]; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 728 | fr = &rr->freq_range; |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 729 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 730 | /* |
| 731 | * We only need to know if one frequency rule was |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 732 | * was in center_freq's band, that's enough, so lets |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 733 | * not overwrite it once found |
| 734 | */ |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 735 | if (!band_rule_found) |
| 736 | band_rule_found = freq_in_rule_band(fr, center_freq); |
| 737 | |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 738 | 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] | 739 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 740 | if (band_rule_found && bw_fits) |
| 741 | return rr; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 742 | } |
| 743 | |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 744 | if (!band_rule_found) |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 745 | return ERR_PTR(-ERANGE); |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 746 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 747 | return ERR_PTR(-EINVAL); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 748 | } |
| 749 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 750 | const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy, |
| 751 | u32 center_freq) |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 752 | { |
Johannes Berg | 5d885b9 | 2012-12-04 00:14:17 +0100 | [diff] [blame] | 753 | const struct ieee80211_regdomain *regd; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 754 | struct regulatory_request *lr = get_last_request(); |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 755 | |
Johannes Berg | 5d885b9 | 2012-12-04 00:14:17 +0100 | [diff] [blame] | 756 | /* |
| 757 | * Follow the driver's regulatory domain, if present, unless a country |
| 758 | * IE has been processed or a user wants to help complaince further |
| 759 | */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 760 | if (lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE && |
| 761 | lr->initiator != NL80211_REGDOM_SET_BY_USER && |
Johannes Berg | 5d885b9 | 2012-12-04 00:14:17 +0100 | [diff] [blame] | 762 | wiphy->regd) |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 763 | regd = get_wiphy_regdom(wiphy); |
Johannes Berg | 5d885b9 | 2012-12-04 00:14:17 +0100 | [diff] [blame] | 764 | else |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 765 | regd = get_cfg80211_regdom(); |
Johannes Berg | 5d885b9 | 2012-12-04 00:14:17 +0100 | [diff] [blame] | 766 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 767 | return freq_reg_info_regd(wiphy, center_freq, regd); |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 768 | } |
John W. Linville | 4f366c5 | 2010-07-15 14:57:33 -0400 | [diff] [blame] | 769 | EXPORT_SYMBOL(freq_reg_info); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 770 | |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 771 | const char *reg_initiator_name(enum nl80211_reg_initiator initiator) |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 772 | { |
| 773 | switch (initiator) { |
| 774 | case NL80211_REGDOM_SET_BY_CORE: |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 775 | return "core"; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 776 | case NL80211_REGDOM_SET_BY_USER: |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 777 | return "user"; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 778 | case NL80211_REGDOM_SET_BY_DRIVER: |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 779 | return "driver"; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 780 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 781 | return "country IE"; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 782 | default: |
| 783 | WARN_ON(1); |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 784 | return "bug"; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 785 | } |
| 786 | } |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 787 | EXPORT_SYMBOL(reg_initiator_name); |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 788 | |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 789 | #ifdef CONFIG_CFG80211_REG_DEBUG |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 790 | static void chan_reg_rule_print_dbg(struct ieee80211_channel *chan, |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 791 | const struct ieee80211_reg_rule *reg_rule) |
| 792 | { |
| 793 | const struct ieee80211_power_rule *power_rule; |
| 794 | const struct ieee80211_freq_range *freq_range; |
| 795 | char max_antenna_gain[32]; |
| 796 | |
| 797 | power_rule = ®_rule->power_rule; |
| 798 | freq_range = ®_rule->freq_range; |
| 799 | |
| 800 | if (!power_rule->max_antenna_gain) |
| 801 | snprintf(max_antenna_gain, 32, "N/A"); |
| 802 | else |
| 803 | snprintf(max_antenna_gain, 32, "%d", power_rule->max_antenna_gain); |
| 804 | |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 805 | REG_DBG_PRINT("Updating information on frequency %d MHz with regulatory rule:\n", |
| 806 | chan->center_freq); |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 807 | |
Pavel Roskin | 56e6786 | 2011-09-01 11:54:12 -0400 | [diff] [blame] | 808 | 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] | 809 | freq_range->start_freq_khz, freq_range->end_freq_khz, |
| 810 | freq_range->max_bandwidth_khz, max_antenna_gain, |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 811 | power_rule->max_eirp); |
| 812 | } |
| 813 | #else |
| 814 | static void chan_reg_rule_print_dbg(struct ieee80211_channel *chan, |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 815 | const struct ieee80211_reg_rule *reg_rule) |
| 816 | { |
| 817 | return; |
| 818 | } |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 819 | #endif |
| 820 | |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 821 | /* |
| 822 | * Note that right now we assume the desired channel bandwidth |
| 823 | * is always 20 MHz for each individual channel (HT40 uses 20 MHz |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 824 | * per channel, the primary and the extension channel). |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 825 | */ |
Luis R. Rodriguez | 7ca43d0 | 2010-10-20 10:18:53 -0700 | [diff] [blame] | 826 | static void handle_channel(struct wiphy *wiphy, |
| 827 | enum nl80211_reg_initiator initiator, |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 828 | struct ieee80211_channel *chan) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 829 | { |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 830 | u32 flags, bw_flags = 0; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 831 | const struct ieee80211_reg_rule *reg_rule = NULL; |
| 832 | const struct ieee80211_power_rule *power_rule = NULL; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 833 | const struct ieee80211_freq_range *freq_range = NULL; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 834 | struct wiphy *request_wiphy = NULL; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 835 | struct regulatory_request *lr = get_last_request(); |
Luis R. Rodriguez | a92a3ce | 2009-01-07 17:43:33 -0800 | [diff] [blame] | 836 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 837 | request_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx); |
Luis R. Rodriguez | a92a3ce | 2009-01-07 17:43:33 -0800 | [diff] [blame] | 838 | |
| 839 | flags = chan->orig_flags; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 840 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 841 | reg_rule = freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq)); |
| 842 | if (IS_ERR(reg_rule)) { |
Luis R. Rodriguez | ca4ffe8 | 2010-10-20 10:18:55 -0700 | [diff] [blame] | 843 | /* |
| 844 | * We will disable all channels that do not match our |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 845 | * received regulatory rule unless the hint is coming |
Luis R. Rodriguez | ca4ffe8 | 2010-10-20 10:18:55 -0700 | [diff] [blame] | 846 | * from a Country IE and the Country IE had no information |
| 847 | * about a band. The IEEE 802.11 spec allows for an AP |
| 848 | * to send only a subset of the regulatory rules allowed, |
| 849 | * so an AP in the US that only supports 2.4 GHz may only send |
| 850 | * a country IE with information for the 2.4 GHz band |
| 851 | * while 5 GHz is still supported. |
| 852 | */ |
| 853 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 854 | PTR_ERR(reg_rule) == -ERANGE) |
Luis R. Rodriguez | ca4ffe8 | 2010-10-20 10:18:55 -0700 | [diff] [blame] | 855 | return; |
| 856 | |
Luis R. Rodriguez | d91e41b | 2010-10-20 10:18:59 -0700 | [diff] [blame] | 857 | REG_DBG_PRINT("Disabling freq %d MHz\n", chan->center_freq); |
Johannes Berg | 990de49 | 2013-04-16 14:32:26 +0200 | [diff] [blame] | 858 | chan->flags |= IEEE80211_CHAN_DISABLED; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 859 | return; |
Luis R. Rodriguez | ca4ffe8 | 2010-10-20 10:18:55 -0700 | [diff] [blame] | 860 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 861 | |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 862 | chan_reg_rule_print_dbg(chan, reg_rule); |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 863 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 864 | power_rule = ®_rule->power_rule; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 865 | freq_range = ®_rule->freq_range; |
| 866 | |
| 867 | if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(40)) |
| 868 | bw_flags = IEEE80211_CHAN_NO_HT40; |
Johannes Berg | c7a6ee2 | 2012-12-12 17:50:39 +0100 | [diff] [blame] | 869 | if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(80)) |
| 870 | bw_flags |= IEEE80211_CHAN_NO_80MHZ; |
| 871 | if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(160)) |
| 872 | bw_flags |= IEEE80211_CHAN_NO_160MHZ; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 873 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 874 | if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER && |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 875 | request_wiphy && request_wiphy == wiphy && |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 876 | request_wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY) { |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 877 | /* |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 878 | * This guarantees the driver's requested regulatory domain |
Luis R. Rodriguez | f976376 | 2009-01-22 15:05:52 -0800 | [diff] [blame] | 879 | * will always be used as a base for further regulatory |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 880 | * settings |
| 881 | */ |
Luis R. Rodriguez | f976376 | 2009-01-22 15:05:52 -0800 | [diff] [blame] | 882 | chan->flags = chan->orig_flags = |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 883 | map_regdom_flags(reg_rule->flags) | bw_flags; |
Luis R. Rodriguez | f976376 | 2009-01-22 15:05:52 -0800 | [diff] [blame] | 884 | chan->max_antenna_gain = chan->orig_mag = |
| 885 | (int) MBI_TO_DBI(power_rule->max_antenna_gain); |
Felix Fietkau | 279f0f5 | 2012-10-17 13:56:20 +0200 | [diff] [blame] | 886 | chan->max_reg_power = chan->max_power = chan->orig_mpwr = |
Luis R. Rodriguez | f976376 | 2009-01-22 15:05:52 -0800 | [diff] [blame] | 887 | (int) MBM_TO_DBM(power_rule->max_eirp); |
| 888 | return; |
| 889 | } |
| 890 | |
Simon Wunderlich | 04f3904 | 2013-02-08 18:16:19 +0100 | [diff] [blame] | 891 | chan->dfs_state = NL80211_DFS_USABLE; |
| 892 | chan->dfs_state_entered = jiffies; |
| 893 | |
Rajkumar Manoharan | aa3d7ee | 2011-09-14 14:28:17 +0530 | [diff] [blame] | 894 | chan->beacon_found = false; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 895 | chan->flags = flags | bw_flags | map_regdom_flags(reg_rule->flags); |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 896 | chan->max_antenna_gain = |
| 897 | min_t(int, chan->orig_mag, |
| 898 | MBI_TO_DBI(power_rule->max_antenna_gain)); |
Hong Wu | eccc068 | 2012-01-11 20:33:39 +0200 | [diff] [blame] | 899 | chan->max_reg_power = (int) MBM_TO_DBM(power_rule->max_eirp); |
Stanislaw Gruszka | 5e31fc0 | 2012-07-24 08:35:39 +0200 | [diff] [blame] | 900 | if (chan->orig_mpwr) { |
| 901 | /* |
| 902 | * Devices that have their own custom regulatory domain |
| 903 | * but also use WIPHY_FLAG_STRICT_REGULATORY will follow the |
| 904 | * passed country IE power settings. |
| 905 | */ |
| 906 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && |
| 907 | wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY && |
| 908 | wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY) |
| 909 | chan->max_power = chan->max_reg_power; |
| 910 | else |
| 911 | chan->max_power = min(chan->orig_mpwr, |
| 912 | chan->max_reg_power); |
| 913 | } else |
| 914 | chan->max_power = chan->max_reg_power; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 915 | } |
| 916 | |
Luis R. Rodriguez | 7ca43d0 | 2010-10-20 10:18:53 -0700 | [diff] [blame] | 917 | static void handle_band(struct wiphy *wiphy, |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 918 | enum nl80211_reg_initiator initiator, |
| 919 | struct ieee80211_supported_band *sband) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 920 | { |
Luis R. Rodriguez | a92a3ce | 2009-01-07 17:43:33 -0800 | [diff] [blame] | 921 | unsigned int i; |
Luis R. Rodriguez | a92a3ce | 2009-01-07 17:43:33 -0800 | [diff] [blame] | 922 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 923 | if (!sband) |
| 924 | return; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 925 | |
| 926 | for (i = 0; i < sband->n_channels; i++) |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 927 | handle_channel(wiphy, initiator, &sband->channels[i]); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 928 | } |
| 929 | |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 930 | static bool reg_request_cell_base(struct regulatory_request *request) |
| 931 | { |
| 932 | if (request->initiator != NL80211_REGDOM_SET_BY_USER) |
| 933 | return false; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 934 | 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] | 935 | } |
| 936 | |
| 937 | bool reg_last_request_cell_base(void) |
| 938 | { |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 939 | return reg_request_cell_base(get_last_request()); |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 940 | } |
| 941 | |
| 942 | #ifdef CONFIG_CFG80211_CERTIFICATION_ONUS |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 943 | /* Core specific check */ |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 944 | static enum reg_request_treatment |
| 945 | reg_ignore_cell_hint(struct regulatory_request *pending_request) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 946 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 947 | struct regulatory_request *lr = get_last_request(); |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 948 | |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 949 | if (!reg_num_devs_support_basehint) |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 950 | return REG_REQ_IGNORE; |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 951 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 952 | if (reg_request_cell_base(lr) && |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 953 | !regdom_changes(pending_request->alpha2)) |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 954 | return REG_REQ_ALREADY_SET; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 955 | |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 956 | return REG_REQ_OK; |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 957 | } |
| 958 | |
| 959 | /* Device specific check */ |
| 960 | static bool reg_dev_ignore_cell_hint(struct wiphy *wiphy) |
| 961 | { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 962 | return !(wiphy->features & NL80211_FEATURE_CELL_BASE_REG_HINTS); |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 963 | } |
| 964 | #else |
| 965 | static int reg_ignore_cell_hint(struct regulatory_request *pending_request) |
| 966 | { |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 967 | return REG_REQ_IGNORE; |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 968 | } |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 969 | |
| 970 | static bool reg_dev_ignore_cell_hint(struct wiphy *wiphy) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 971 | { |
| 972 | return true; |
| 973 | } |
| 974 | #endif |
| 975 | |
Luis R. Rodriguez | fa1fb9c | 2013-10-02 18:33:10 -0700 | [diff] [blame] | 976 | static bool wiphy_strict_alpha2_regd(struct wiphy *wiphy) |
| 977 | { |
| 978 | if (wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY && |
| 979 | !(wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY)) |
| 980 | return true; |
| 981 | return false; |
| 982 | } |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 983 | |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 984 | static bool ignore_reg_update(struct wiphy *wiphy, |
| 985 | enum nl80211_reg_initiator initiator) |
Luis R. Rodriguez | 14b9815 | 2008-11-12 14:22:03 -0800 | [diff] [blame] | 986 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 987 | struct regulatory_request *lr = get_last_request(); |
| 988 | |
| 989 | if (!lr) { |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 990 | REG_DBG_PRINT("Ignoring regulatory request set by %s " |
| 991 | "since last_request is not set\n", |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 992 | reg_initiator_name(initiator)); |
Luis R. Rodriguez | 14b9815 | 2008-11-12 14:22:03 -0800 | [diff] [blame] | 993 | return true; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 994 | } |
| 995 | |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 996 | if (initiator == NL80211_REGDOM_SET_BY_CORE && |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 997 | wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY) { |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 998 | REG_DBG_PRINT("Ignoring regulatory request set by %s " |
| 999 | "since the driver uses its own custom " |
| 1000 | "regulatory domain\n", |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1001 | reg_initiator_name(initiator)); |
Luis R. Rodriguez | 14b9815 | 2008-11-12 14:22:03 -0800 | [diff] [blame] | 1002 | return true; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1003 | } |
| 1004 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 1005 | /* |
| 1006 | * wiphy->regd will be set once the device has its own |
| 1007 | * desired regulatory domain set |
| 1008 | */ |
Luis R. Rodriguez | fa1fb9c | 2013-10-02 18:33:10 -0700 | [diff] [blame] | 1009 | if (wiphy_strict_alpha2_regd(wiphy) && !wiphy->regd && |
Luis R. Rodriguez | 749b527 | 2010-10-20 10:18:54 -0700 | [diff] [blame] | 1010 | initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE && |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1011 | !is_world_regdom(lr->alpha2)) { |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 1012 | REG_DBG_PRINT("Ignoring regulatory request set by %s " |
| 1013 | "since the driver requires its own regulatory " |
| 1014 | "domain to be set first\n", |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1015 | reg_initiator_name(initiator)); |
Luis R. Rodriguez | 14b9815 | 2008-11-12 14:22:03 -0800 | [diff] [blame] | 1016 | return true; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1017 | } |
| 1018 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1019 | if (reg_request_cell_base(lr)) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1020 | return reg_dev_ignore_cell_hint(wiphy); |
| 1021 | |
Luis R. Rodriguez | 14b9815 | 2008-11-12 14:22:03 -0800 | [diff] [blame] | 1022 | return false; |
| 1023 | } |
| 1024 | |
Luis R. Rodriguez | 3195e48 | 2012-12-19 10:53:03 -0800 | [diff] [blame] | 1025 | static bool reg_is_world_roaming(struct wiphy *wiphy) |
| 1026 | { |
| 1027 | const struct ieee80211_regdomain *cr = get_cfg80211_regdom(); |
| 1028 | const struct ieee80211_regdomain *wr = get_wiphy_regdom(wiphy); |
| 1029 | struct regulatory_request *lr = get_last_request(); |
| 1030 | |
| 1031 | if (is_world_regdom(cr->alpha2) || (wr && is_world_regdom(wr->alpha2))) |
| 1032 | return true; |
| 1033 | |
| 1034 | if (lr && lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE && |
| 1035 | wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY) |
| 1036 | return true; |
| 1037 | |
| 1038 | return false; |
| 1039 | } |
| 1040 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1041 | 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] | 1042 | struct reg_beacon *reg_beacon) |
| 1043 | { |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1044 | struct ieee80211_supported_band *sband; |
| 1045 | struct ieee80211_channel *chan; |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1046 | bool channel_changed = false; |
| 1047 | struct ieee80211_channel chan_before; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1048 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1049 | sband = wiphy->bands[reg_beacon->chan.band]; |
| 1050 | chan = &sband->channels[chan_idx]; |
| 1051 | |
| 1052 | if (likely(chan->center_freq != reg_beacon->chan.center_freq)) |
| 1053 | return; |
| 1054 | |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1055 | if (chan->beacon_found) |
| 1056 | return; |
| 1057 | |
| 1058 | chan->beacon_found = true; |
| 1059 | |
Luis R. Rodriguez | 0f500a5 | 2012-12-19 10:53:04 -0800 | [diff] [blame] | 1060 | if (!reg_is_world_roaming(wiphy)) |
| 1061 | return; |
| 1062 | |
Johannes Berg | 5be83de | 2009-11-19 00:56:28 +0100 | [diff] [blame] | 1063 | if (wiphy->flags & WIPHY_FLAG_DISABLE_BEACON_HINTS) |
Luis R. Rodriguez | 3718424 | 2009-07-30 17:43:48 -0700 | [diff] [blame] | 1064 | return; |
| 1065 | |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1066 | chan_before.center_freq = chan->center_freq; |
| 1067 | chan_before.flags = chan->flags; |
| 1068 | |
Luis R. Rodriguez | 3718424 | 2009-07-30 17:43:48 -0700 | [diff] [blame] | 1069 | if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN) { |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1070 | chan->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1071 | channel_changed = true; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1072 | } |
| 1073 | |
Luis R. Rodriguez | 3718424 | 2009-07-30 17:43:48 -0700 | [diff] [blame] | 1074 | if (chan->flags & IEEE80211_CHAN_NO_IBSS) { |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1075 | chan->flags &= ~IEEE80211_CHAN_NO_IBSS; |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1076 | channel_changed = true; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1077 | } |
| 1078 | |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1079 | if (channel_changed) |
| 1080 | nl80211_send_beacon_hint_event(wiphy, &chan_before, chan); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1081 | } |
| 1082 | |
| 1083 | /* |
| 1084 | * Called when a scan on a wiphy finds a beacon on |
| 1085 | * new channel |
| 1086 | */ |
| 1087 | static void wiphy_update_new_beacon(struct wiphy *wiphy, |
| 1088 | struct reg_beacon *reg_beacon) |
| 1089 | { |
| 1090 | unsigned int i; |
| 1091 | struct ieee80211_supported_band *sband; |
| 1092 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1093 | if (!wiphy->bands[reg_beacon->chan.band]) |
| 1094 | return; |
| 1095 | |
| 1096 | sband = wiphy->bands[reg_beacon->chan.band]; |
| 1097 | |
| 1098 | for (i = 0; i < sband->n_channels; i++) |
| 1099 | handle_reg_beacon(wiphy, i, reg_beacon); |
| 1100 | } |
| 1101 | |
| 1102 | /* |
| 1103 | * Called upon reg changes or a new wiphy is added |
| 1104 | */ |
| 1105 | static void wiphy_update_beacon_reg(struct wiphy *wiphy) |
| 1106 | { |
| 1107 | unsigned int i; |
| 1108 | struct ieee80211_supported_band *sband; |
| 1109 | struct reg_beacon *reg_beacon; |
| 1110 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1111 | list_for_each_entry(reg_beacon, ®_beacon_list, list) { |
| 1112 | if (!wiphy->bands[reg_beacon->chan.band]) |
| 1113 | continue; |
| 1114 | sband = wiphy->bands[reg_beacon->chan.band]; |
| 1115 | for (i = 0; i < sband->n_channels; i++) |
| 1116 | handle_reg_beacon(wiphy, i, reg_beacon); |
| 1117 | } |
| 1118 | } |
| 1119 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1120 | /* Reap the advantages of previously found beacons */ |
| 1121 | static void reg_process_beacons(struct wiphy *wiphy) |
| 1122 | { |
Luis R. Rodriguez | b1ed8dd | 2009-05-02 00:34:15 -0400 | [diff] [blame] | 1123 | /* |
| 1124 | * Means we are just firing up cfg80211, so no beacons would |
| 1125 | * have been processed yet. |
| 1126 | */ |
| 1127 | if (!last_request) |
| 1128 | return; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1129 | wiphy_update_beacon_reg(wiphy); |
| 1130 | } |
| 1131 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1132 | static bool is_ht40_allowed(struct ieee80211_channel *chan) |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1133 | { |
| 1134 | if (!chan) |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1135 | return false; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1136 | if (chan->flags & IEEE80211_CHAN_DISABLED) |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1137 | return false; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1138 | /* This would happen when regulatory rules disallow HT40 completely */ |
Felix Fietkau | 55b183a | 2013-01-11 14:22:58 +0100 | [diff] [blame] | 1139 | if ((chan->flags & IEEE80211_CHAN_NO_HT40) == IEEE80211_CHAN_NO_HT40) |
| 1140 | return false; |
| 1141 | return true; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1142 | } |
| 1143 | |
| 1144 | static void reg_process_ht_flags_channel(struct wiphy *wiphy, |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1145 | struct ieee80211_channel *channel) |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1146 | { |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1147 | struct ieee80211_supported_band *sband = wiphy->bands[channel->band]; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1148 | struct ieee80211_channel *channel_before = NULL, *channel_after = NULL; |
| 1149 | unsigned int i; |
| 1150 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1151 | if (!is_ht40_allowed(channel)) { |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1152 | channel->flags |= IEEE80211_CHAN_NO_HT40; |
| 1153 | return; |
| 1154 | } |
| 1155 | |
| 1156 | /* |
| 1157 | * We need to ensure the extension channels exist to |
| 1158 | * be able to use HT40- or HT40+, this finds them (or not) |
| 1159 | */ |
| 1160 | for (i = 0; i < sband->n_channels; i++) { |
| 1161 | struct ieee80211_channel *c = &sband->channels[i]; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1162 | |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1163 | if (c->center_freq == (channel->center_freq - 20)) |
| 1164 | channel_before = c; |
| 1165 | if (c->center_freq == (channel->center_freq + 20)) |
| 1166 | channel_after = c; |
| 1167 | } |
| 1168 | |
| 1169 | /* |
| 1170 | * Please note that this assumes target bandwidth is 20 MHz, |
| 1171 | * if that ever changes we also need to change the below logic |
| 1172 | * to include that as well. |
| 1173 | */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1174 | if (!is_ht40_allowed(channel_before)) |
Luis R. Rodriguez | 689da1b | 2009-05-02 00:37:18 -0400 | [diff] [blame] | 1175 | channel->flags |= IEEE80211_CHAN_NO_HT40MINUS; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1176 | else |
Luis R. Rodriguez | 689da1b | 2009-05-02 00:37:18 -0400 | [diff] [blame] | 1177 | channel->flags &= ~IEEE80211_CHAN_NO_HT40MINUS; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1178 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1179 | if (!is_ht40_allowed(channel_after)) |
Luis R. Rodriguez | 689da1b | 2009-05-02 00:37:18 -0400 | [diff] [blame] | 1180 | channel->flags |= IEEE80211_CHAN_NO_HT40PLUS; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1181 | else |
Luis R. Rodriguez | 689da1b | 2009-05-02 00:37:18 -0400 | [diff] [blame] | 1182 | channel->flags &= ~IEEE80211_CHAN_NO_HT40PLUS; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1183 | } |
| 1184 | |
| 1185 | static void reg_process_ht_flags_band(struct wiphy *wiphy, |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1186 | struct ieee80211_supported_band *sband) |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1187 | { |
| 1188 | unsigned int i; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1189 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1190 | if (!sband) |
| 1191 | return; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1192 | |
| 1193 | for (i = 0; i < sband->n_channels; i++) |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1194 | reg_process_ht_flags_channel(wiphy, &sband->channels[i]); |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1195 | } |
| 1196 | |
| 1197 | static void reg_process_ht_flags(struct wiphy *wiphy) |
| 1198 | { |
| 1199 | enum ieee80211_band band; |
| 1200 | |
| 1201 | if (!wiphy) |
| 1202 | return; |
| 1203 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1204 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) |
| 1205 | reg_process_ht_flags_band(wiphy, wiphy->bands[band]); |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1206 | } |
| 1207 | |
Sven Neumann | eac03e3 | 2011-08-30 23:38:53 +0200 | [diff] [blame] | 1208 | static void wiphy_update_regulatory(struct wiphy *wiphy, |
| 1209 | enum nl80211_reg_initiator initiator) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1210 | { |
| 1211 | enum ieee80211_band band; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1212 | struct regulatory_request *lr = get_last_request(); |
Sven Neumann | eac03e3 | 2011-08-30 23:38:53 +0200 | [diff] [blame] | 1213 | |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1214 | if (ignore_reg_update(wiphy, initiator)) |
Sven Neumann | a203c2a | 2011-07-12 15:52:07 +0200 | [diff] [blame] | 1215 | return; |
| 1216 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1217 | lr->dfs_region = get_cfg80211_regdom()->dfs_region; |
Luis R. Rodriguez | b68e6b3 | 2011-10-11 10:59:03 -0700 | [diff] [blame] | 1218 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1219 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) |
| 1220 | handle_band(wiphy, initiator, wiphy->bands[band]); |
Sven Neumann | a203c2a | 2011-07-12 15:52:07 +0200 | [diff] [blame] | 1221 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1222 | reg_process_beacons(wiphy); |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1223 | reg_process_ht_flags(wiphy); |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1224 | |
Luis R. Rodriguez | 560e28e | 2009-01-07 17:43:32 -0800 | [diff] [blame] | 1225 | if (wiphy->reg_notifier) |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1226 | wiphy->reg_notifier(wiphy, lr); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1227 | } |
| 1228 | |
Sven Neumann | d7549cb | 2011-08-30 23:38:54 +0200 | [diff] [blame] | 1229 | static void update_all_wiphy_regulatory(enum nl80211_reg_initiator initiator) |
| 1230 | { |
| 1231 | struct cfg80211_registered_device *rdev; |
Rajkumar Manoharan | 4a38994 | 2011-12-08 23:59:26 +0530 | [diff] [blame] | 1232 | struct wiphy *wiphy; |
Sven Neumann | d7549cb | 2011-08-30 23:38:54 +0200 | [diff] [blame] | 1233 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 1234 | ASSERT_RTNL(); |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 1235 | |
Rajkumar Manoharan | 4a38994 | 2011-12-08 23:59:26 +0530 | [diff] [blame] | 1236 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| 1237 | wiphy = &rdev->wiphy; |
| 1238 | wiphy_update_regulatory(wiphy, initiator); |
| 1239 | /* |
| 1240 | * Regulatory updates set by CORE are ignored for custom |
| 1241 | * regulatory cards. Let us notify the changes to the driver, |
| 1242 | * as some drivers used this to restore its orig_* reg domain. |
| 1243 | */ |
| 1244 | if (initiator == NL80211_REGDOM_SET_BY_CORE && |
| 1245 | wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY && |
| 1246 | wiphy->reg_notifier) |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1247 | wiphy->reg_notifier(wiphy, get_last_request()); |
Rajkumar Manoharan | 4a38994 | 2011-12-08 23:59:26 +0530 | [diff] [blame] | 1248 | } |
Sven Neumann | d7549cb | 2011-08-30 23:38:54 +0200 | [diff] [blame] | 1249 | } |
| 1250 | |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1251 | static void handle_channel_custom(struct wiphy *wiphy, |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1252 | struct ieee80211_channel *chan, |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1253 | const struct ieee80211_regdomain *regd) |
| 1254 | { |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1255 | u32 bw_flags = 0; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1256 | const struct ieee80211_reg_rule *reg_rule = NULL; |
| 1257 | const struct ieee80211_power_rule *power_rule = NULL; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1258 | const struct ieee80211_freq_range *freq_range = NULL; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1259 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 1260 | reg_rule = freq_reg_info_regd(wiphy, MHZ_TO_KHZ(chan->center_freq), |
| 1261 | regd); |
Luis R. Rodriguez | ac46d48 | 2009-05-01 18:44:50 -0400 | [diff] [blame] | 1262 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 1263 | if (IS_ERR(reg_rule)) { |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 1264 | REG_DBG_PRINT("Disabling freq %d MHz as custom regd has no rule that fits it\n", |
| 1265 | chan->center_freq); |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1266 | chan->flags = IEEE80211_CHAN_DISABLED; |
| 1267 | return; |
| 1268 | } |
| 1269 | |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 1270 | chan_reg_rule_print_dbg(chan, reg_rule); |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 1271 | |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1272 | power_rule = ®_rule->power_rule; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1273 | freq_range = ®_rule->freq_range; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1274 | |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1275 | if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(40)) |
| 1276 | bw_flags = IEEE80211_CHAN_NO_HT40; |
Johannes Berg | c7a6ee2 | 2012-12-12 17:50:39 +0100 | [diff] [blame] | 1277 | if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(80)) |
| 1278 | bw_flags |= IEEE80211_CHAN_NO_80MHZ; |
| 1279 | if (freq_range->max_bandwidth_khz < MHZ_TO_KHZ(160)) |
| 1280 | bw_flags |= IEEE80211_CHAN_NO_160MHZ; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1281 | |
| 1282 | chan->flags |= map_regdom_flags(reg_rule->flags) | bw_flags; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1283 | 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] | 1284 | chan->max_reg_power = chan->max_power = |
| 1285 | (int) MBM_TO_DBM(power_rule->max_eirp); |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1286 | } |
| 1287 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1288 | static void handle_band_custom(struct wiphy *wiphy, |
| 1289 | struct ieee80211_supported_band *sband, |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1290 | const struct ieee80211_regdomain *regd) |
| 1291 | { |
| 1292 | unsigned int i; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1293 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1294 | if (!sband) |
| 1295 | return; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1296 | |
| 1297 | for (i = 0; i < sband->n_channels; i++) |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1298 | handle_channel_custom(wiphy, &sband->channels[i], regd); |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1299 | } |
| 1300 | |
| 1301 | /* Used by drivers prior to wiphy registration */ |
| 1302 | void wiphy_apply_custom_regulatory(struct wiphy *wiphy, |
| 1303 | const struct ieee80211_regdomain *regd) |
| 1304 | { |
| 1305 | enum ieee80211_band band; |
Luis R. Rodriguez | bbcf3f0 | 2009-05-19 17:49:47 -0400 | [diff] [blame] | 1306 | unsigned int bands_set = 0; |
Luis R. Rodriguez | ac46d48 | 2009-05-01 18:44:50 -0400 | [diff] [blame] | 1307 | |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1308 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
Luis R. Rodriguez | bbcf3f0 | 2009-05-19 17:49:47 -0400 | [diff] [blame] | 1309 | if (!wiphy->bands[band]) |
| 1310 | continue; |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1311 | handle_band_custom(wiphy, wiphy->bands[band], regd); |
Luis R. Rodriguez | bbcf3f0 | 2009-05-19 17:49:47 -0400 | [diff] [blame] | 1312 | bands_set++; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1313 | } |
Luis R. Rodriguez | bbcf3f0 | 2009-05-19 17:49:47 -0400 | [diff] [blame] | 1314 | |
| 1315 | /* |
| 1316 | * no point in calling this if it won't have any effect |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1317 | * on your device's supported bands. |
Luis R. Rodriguez | bbcf3f0 | 2009-05-19 17:49:47 -0400 | [diff] [blame] | 1318 | */ |
| 1319 | WARN_ON(!bands_set); |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1320 | } |
| 1321 | EXPORT_SYMBOL(wiphy_apply_custom_regulatory); |
| 1322 | |
Johannes Berg | 84fa4f4 | 2008-10-24 20:32:23 +0200 | [diff] [blame] | 1323 | /* This has the logic which determines when a new request |
| 1324 | * should be ignored. */ |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1325 | static enum reg_request_treatment |
| 1326 | get_reg_request_treatment(struct wiphy *wiphy, |
Luis R. Rodriguez | 2f92cd2 | 2009-02-21 00:24:16 -0500 | [diff] [blame] | 1327 | struct regulatory_request *pending_request) |
Johannes Berg | 84fa4f4 | 2008-10-24 20:32:23 +0200 | [diff] [blame] | 1328 | { |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 1329 | struct wiphy *last_wiphy = NULL; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1330 | struct regulatory_request *lr = get_last_request(); |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 1331 | |
Johannes Berg | 84fa4f4 | 2008-10-24 20:32:23 +0200 | [diff] [blame] | 1332 | /* All initial requests are respected */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1333 | if (!lr) |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1334 | return REG_REQ_OK; |
Johannes Berg | 84fa4f4 | 2008-10-24 20:32:23 +0200 | [diff] [blame] | 1335 | |
Luis R. Rodriguez | 2f92cd2 | 2009-02-21 00:24:16 -0500 | [diff] [blame] | 1336 | switch (pending_request->initiator) { |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1337 | case NL80211_REGDOM_SET_BY_CORE: |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1338 | return REG_REQ_OK; |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1339 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1340 | if (reg_request_cell_base(lr)) { |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1341 | /* Trust a Cell base station over the AP's country IE */ |
| 1342 | if (regdom_changes(pending_request->alpha2)) |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1343 | return REG_REQ_IGNORE; |
| 1344 | return REG_REQ_ALREADY_SET; |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1345 | } |
| 1346 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1347 | last_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx); |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 1348 | |
Luis R. Rodriguez | 2f92cd2 | 2009-02-21 00:24:16 -0500 | [diff] [blame] | 1349 | if (unlikely(!is_an_alpha2(pending_request->alpha2))) |
Johannes Berg | 84fa4f4 | 2008-10-24 20:32:23 +0200 | [diff] [blame] | 1350 | return -EINVAL; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1351 | if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) { |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 1352 | if (last_wiphy != wiphy) { |
Johannes Berg | 84fa4f4 | 2008-10-24 20:32:23 +0200 | [diff] [blame] | 1353 | /* |
| 1354 | * Two cards with two APs claiming different |
Thadeu Lima de Souza Cascardo | 1fe90b0 | 2009-08-11 11:18:42 -0300 | [diff] [blame] | 1355 | * Country IE alpha2s. We could |
Johannes Berg | 84fa4f4 | 2008-10-24 20:32:23 +0200 | [diff] [blame] | 1356 | * intersect them, but that seems unlikely |
| 1357 | * to be correct. Reject second one for now. |
| 1358 | */ |
Luis R. Rodriguez | 2f92cd2 | 2009-02-21 00:24:16 -0500 | [diff] [blame] | 1359 | if (regdom_changes(pending_request->alpha2)) |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1360 | return REG_REQ_IGNORE; |
| 1361 | return REG_REQ_ALREADY_SET; |
Johannes Berg | 84fa4f4 | 2008-10-24 20:32:23 +0200 | [diff] [blame] | 1362 | } |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 1363 | /* |
| 1364 | * Two consecutive Country IE hints on the same wiphy. |
| 1365 | * This should be picked up early by the driver/stack |
| 1366 | */ |
Luis R. Rodriguez | 2f92cd2 | 2009-02-21 00:24:16 -0500 | [diff] [blame] | 1367 | if (WARN_ON(regdom_changes(pending_request->alpha2))) |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1368 | return REG_REQ_OK; |
| 1369 | return REG_REQ_ALREADY_SET; |
Johannes Berg | 84fa4f4 | 2008-10-24 20:32:23 +0200 | [diff] [blame] | 1370 | } |
Johannes Berg | 3430140 | 2013-06-04 14:35:07 +0200 | [diff] [blame] | 1371 | return REG_REQ_OK; |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1372 | case NL80211_REGDOM_SET_BY_DRIVER: |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1373 | if (lr->initiator == NL80211_REGDOM_SET_BY_CORE) { |
Luis R. Rodriguez | 2f92cd2 | 2009-02-21 00:24:16 -0500 | [diff] [blame] | 1374 | if (regdom_changes(pending_request->alpha2)) |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1375 | return REG_REQ_OK; |
| 1376 | return REG_REQ_ALREADY_SET; |
Luis R. Rodriguez | e74b1e7 | 2009-01-22 15:05:48 -0800 | [diff] [blame] | 1377 | } |
Luis R. Rodriguez | fff32c0 | 2009-02-21 00:04:32 -0500 | [diff] [blame] | 1378 | |
| 1379 | /* |
| 1380 | * This would happen if you unplug and plug your card |
| 1381 | * back in or if you add a new device for which the previously |
| 1382 | * loaded card also agrees on the regulatory domain. |
| 1383 | */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1384 | if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER && |
Luis R. Rodriguez | 2f92cd2 | 2009-02-21 00:24:16 -0500 | [diff] [blame] | 1385 | !regdom_changes(pending_request->alpha2)) |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1386 | return REG_REQ_ALREADY_SET; |
Luis R. Rodriguez | fff32c0 | 2009-02-21 00:04:32 -0500 | [diff] [blame] | 1387 | |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1388 | return REG_REQ_INTERSECT; |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1389 | case NL80211_REGDOM_SET_BY_USER: |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1390 | if (reg_request_cell_base(pending_request)) |
| 1391 | return reg_ignore_cell_hint(pending_request); |
| 1392 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1393 | if (reg_request_cell_base(lr)) |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1394 | return REG_REQ_IGNORE; |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1395 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1396 | if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1397 | return REG_REQ_INTERSECT; |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 1398 | /* |
| 1399 | * If the user knows better the user should set the regdom |
| 1400 | * to their country before the IE is picked up |
| 1401 | */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1402 | if (lr->initiator == NL80211_REGDOM_SET_BY_USER && |
| 1403 | lr->intersect) |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1404 | return REG_REQ_IGNORE; |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 1405 | /* |
| 1406 | * Process user requests only after previous user/driver/core |
| 1407 | * requests have been processed |
| 1408 | */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1409 | if ((lr->initiator == NL80211_REGDOM_SET_BY_CORE || |
| 1410 | lr->initiator == NL80211_REGDOM_SET_BY_DRIVER || |
| 1411 | lr->initiator == NL80211_REGDOM_SET_BY_USER) && |
| 1412 | regdom_changes(lr->alpha2)) |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1413 | return REG_REQ_IGNORE; |
Luis R. Rodriguez | 5eebade | 2009-01-22 15:05:47 -0800 | [diff] [blame] | 1414 | |
John W. Linville | baeb66f | 2009-12-18 17:59:02 -0500 | [diff] [blame] | 1415 | if (!regdom_changes(pending_request->alpha2)) |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1416 | return REG_REQ_ALREADY_SET; |
Luis R. Rodriguez | e74b1e7 | 2009-01-22 15:05:48 -0800 | [diff] [blame] | 1417 | |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1418 | return REG_REQ_OK; |
Johannes Berg | 84fa4f4 | 2008-10-24 20:32:23 +0200 | [diff] [blame] | 1419 | } |
| 1420 | |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1421 | return REG_REQ_IGNORE; |
Johannes Berg | 84fa4f4 | 2008-10-24 20:32:23 +0200 | [diff] [blame] | 1422 | } |
| 1423 | |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1424 | static void reg_set_request_processed(void) |
| 1425 | { |
| 1426 | bool need_more_processing = false; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1427 | struct regulatory_request *lr = get_last_request(); |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1428 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1429 | lr->processed = true; |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1430 | |
| 1431 | spin_lock(®_requests_lock); |
| 1432 | if (!list_empty(®_requests_list)) |
| 1433 | need_more_processing = true; |
| 1434 | spin_unlock(®_requests_lock); |
| 1435 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1436 | if (lr->initiator == NL80211_REGDOM_SET_BY_USER) |
Eliad Peller | fe20b39 | 2012-06-12 12:53:13 +0300 | [diff] [blame] | 1437 | cancel_delayed_work(®_timeout); |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 1438 | |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1439 | if (need_more_processing) |
| 1440 | schedule_work(®_work); |
| 1441 | } |
| 1442 | |
Luis R. Rodriguez | d1c96a9 | 2009-02-21 00:24:13 -0500 | [diff] [blame] | 1443 | /** |
| 1444 | * __regulatory_hint - hint to the wireless core a regulatory domain |
| 1445 | * @wiphy: if the hint comes from country information from an AP, this |
| 1446 | * is required to be set to the wiphy that received the information |
Luis R. Rodriguez | 28da32d | 2009-02-21 00:24:14 -0500 | [diff] [blame] | 1447 | * @pending_request: the regulatory request currently being processed |
Luis R. Rodriguez | d1c96a9 | 2009-02-21 00:24:13 -0500 | [diff] [blame] | 1448 | * |
| 1449 | * The Wireless subsystem can use this function to hint to the wireless core |
Luis R. Rodriguez | 28da32d | 2009-02-21 00:24:14 -0500 | [diff] [blame] | 1450 | * what it believes should be the current regulatory domain. |
Luis R. Rodriguez | d1c96a9 | 2009-02-21 00:24:13 -0500 | [diff] [blame] | 1451 | * |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1452 | * Returns one of the different reg request treatment values. |
Luis R. Rodriguez | d1c96a9 | 2009-02-21 00:24:13 -0500 | [diff] [blame] | 1453 | */ |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1454 | static enum reg_request_treatment |
| 1455 | __regulatory_hint(struct wiphy *wiphy, |
| 1456 | struct regulatory_request *pending_request) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1457 | { |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 1458 | const struct ieee80211_regdomain *regd; |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 1459 | bool intersect = false; |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1460 | enum reg_request_treatment treatment; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1461 | struct regulatory_request *lr; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1462 | |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1463 | treatment = get_reg_request_treatment(wiphy, pending_request); |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 1464 | |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1465 | switch (treatment) { |
| 1466 | case REG_REQ_INTERSECT: |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1467 | if (pending_request->initiator == |
| 1468 | NL80211_REGDOM_SET_BY_DRIVER) { |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 1469 | regd = reg_copy_regd(get_cfg80211_regdom()); |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 1470 | if (IS_ERR(regd)) { |
Luis R. Rodriguez | d951c1d | 2009-02-21 00:24:15 -0500 | [diff] [blame] | 1471 | kfree(pending_request); |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 1472 | return PTR_ERR(regd); |
Luis R. Rodriguez | d951c1d | 2009-02-21 00:24:15 -0500 | [diff] [blame] | 1473 | } |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 1474 | rcu_assign_pointer(wiphy->regd, regd); |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 1475 | } |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 1476 | intersect = true; |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1477 | break; |
| 1478 | case REG_REQ_OK: |
| 1479 | break; |
| 1480 | default: |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 1481 | /* |
| 1482 | * If the regulatory domain being requested by the |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 1483 | * driver has already been set just copy it to the |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 1484 | * wiphy |
| 1485 | */ |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1486 | if (treatment == REG_REQ_ALREADY_SET && |
| 1487 | pending_request->initiator == NL80211_REGDOM_SET_BY_DRIVER) { |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 1488 | regd = reg_copy_regd(get_cfg80211_regdom()); |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 1489 | if (IS_ERR(regd)) { |
Luis R. Rodriguez | d951c1d | 2009-02-21 00:24:15 -0500 | [diff] [blame] | 1490 | kfree(pending_request); |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1491 | return REG_REQ_IGNORE; |
Luis R. Rodriguez | d951c1d | 2009-02-21 00:24:15 -0500 | [diff] [blame] | 1492 | } |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1493 | treatment = REG_REQ_ALREADY_SET; |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 1494 | rcu_assign_pointer(wiphy->regd, regd); |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 1495 | goto new_request; |
| 1496 | } |
Luis R. Rodriguez | d951c1d | 2009-02-21 00:24:15 -0500 | [diff] [blame] | 1497 | kfree(pending_request); |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1498 | return treatment; |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 1499 | } |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1500 | |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 1501 | new_request: |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1502 | lr = get_last_request(); |
| 1503 | if (lr != &core_request_world && lr) |
| 1504 | kfree_rcu(lr, rcu_head); |
Luis R. Rodriguez | d951c1d | 2009-02-21 00:24:15 -0500 | [diff] [blame] | 1505 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1506 | pending_request->intersect = intersect; |
| 1507 | pending_request->processed = false; |
| 1508 | rcu_assign_pointer(last_request, pending_request); |
| 1509 | lr = pending_request; |
Luis R. Rodriguez | d951c1d | 2009-02-21 00:24:15 -0500 | [diff] [blame] | 1510 | |
| 1511 | pending_request = NULL; |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 1512 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1513 | if (lr->initiator == NL80211_REGDOM_SET_BY_USER) { |
| 1514 | user_alpha2[0] = lr->alpha2[0]; |
| 1515 | user_alpha2[1] = lr->alpha2[1]; |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1516 | } |
| 1517 | |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1518 | /* When r == REG_REQ_INTERSECT we do need to call CRDA */ |
| 1519 | if (treatment != REG_REQ_OK && treatment != REG_REQ_INTERSECT) { |
Luis R. Rodriguez | 73d54c9 | 2009-03-09 22:07:42 -0400 | [diff] [blame] | 1520 | /* |
| 1521 | * Since CRDA will not be called in this case as we already |
| 1522 | * have applied the requested regulatory domain before we just |
| 1523 | * inform userspace we have processed the request |
| 1524 | */ |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1525 | if (treatment == REG_REQ_ALREADY_SET) { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1526 | nl80211_send_reg_change_event(lr); |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1527 | reg_set_request_processed(); |
| 1528 | } |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1529 | return treatment; |
Luis R. Rodriguez | 73d54c9 | 2009-03-09 22:07:42 -0400 | [diff] [blame] | 1530 | } |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 1531 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1532 | if (call_crda(lr->alpha2)) |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1533 | return REG_REQ_IGNORE; |
| 1534 | return REG_REQ_OK; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1535 | } |
| 1536 | |
Luis R. Rodriguez | 30a548c | 2009-05-02 01:17:27 -0400 | [diff] [blame] | 1537 | /* This processes *all* regulatory hints */ |
Luis R. Rodriguez | 8848bef | 2011-12-20 12:23:36 -0800 | [diff] [blame] | 1538 | static void reg_process_hint(struct regulatory_request *reg_request, |
| 1539 | enum nl80211_reg_initiator reg_initiator) |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1540 | { |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1541 | struct wiphy *wiphy = NULL; |
| 1542 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1543 | if (WARN_ON(!reg_request->alpha2)) |
| 1544 | return; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1545 | |
Johannes Berg | f417376 | 2012-12-03 18:23:37 +0100 | [diff] [blame] | 1546 | if (reg_request->wiphy_idx != WIPHY_IDX_INVALID) |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1547 | wiphy = wiphy_idx_to_wiphy(reg_request->wiphy_idx); |
| 1548 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1549 | if (reg_initiator == NL80211_REGDOM_SET_BY_DRIVER && !wiphy) { |
Luis R. Rodriguez | d951c1d | 2009-02-21 00:24:15 -0500 | [diff] [blame] | 1550 | kfree(reg_request); |
Luis R. Rodriguez | b0e2880 | 2010-11-17 21:46:08 -0800 | [diff] [blame] | 1551 | return; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1552 | } |
| 1553 | |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1554 | switch (__regulatory_hint(wiphy, reg_request)) { |
| 1555 | case REG_REQ_ALREADY_SET: |
| 1556 | /* This is required so that the orig_* parameters are saved */ |
| 1557 | if (wiphy && wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY) |
| 1558 | wiphy_update_regulatory(wiphy, reg_initiator); |
| 1559 | break; |
| 1560 | default: |
| 1561 | if (reg_initiator == NL80211_REGDOM_SET_BY_USER) |
| 1562 | schedule_delayed_work(®_timeout, |
| 1563 | msecs_to_jiffies(3142)); |
| 1564 | break; |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 1565 | } |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1566 | } |
| 1567 | |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1568 | /* |
| 1569 | * Processes regulatory hints, this is all the NL80211_REGDOM_SET_BY_* |
| 1570 | * Regulatory hints come on a first come first serve basis and we |
| 1571 | * must process each one atomically. |
| 1572 | */ |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1573 | static void reg_process_pending_hints(void) |
Luis R. Rodriguez | b0e2880 | 2010-11-17 21:46:08 -0800 | [diff] [blame] | 1574 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1575 | struct regulatory_request *reg_request, *lr; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1576 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1577 | lr = get_last_request(); |
Luis R. Rodriguez | b0e2880 | 2010-11-17 21:46:08 -0800 | [diff] [blame] | 1578 | |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1579 | /* When last_request->processed becomes true this will be rescheduled */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1580 | if (lr && !lr->processed) { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1581 | 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] | 1582 | return; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1583 | } |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1584 | |
| 1585 | spin_lock(®_requests_lock); |
| 1586 | |
| 1587 | if (list_empty(®_requests_list)) { |
| 1588 | spin_unlock(®_requests_lock); |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 1589 | return; |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1590 | } |
| 1591 | |
| 1592 | reg_request = list_first_entry(®_requests_list, |
| 1593 | struct regulatory_request, |
| 1594 | list); |
| 1595 | list_del_init(®_request->list); |
| 1596 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1597 | spin_unlock(®_requests_lock); |
Luis R. Rodriguez | b0e2880 | 2010-11-17 21:46:08 -0800 | [diff] [blame] | 1598 | |
Luis R. Rodriguez | 8848bef | 2011-12-20 12:23:36 -0800 | [diff] [blame] | 1599 | reg_process_hint(reg_request, reg_request->initiator); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1600 | } |
| 1601 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1602 | /* Processes beacon hints -- this has nothing to do with country IEs */ |
| 1603 | static void reg_process_pending_beacon_hints(void) |
| 1604 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 1605 | struct cfg80211_registered_device *rdev; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1606 | struct reg_beacon *pending_beacon, *tmp; |
| 1607 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1608 | /* This goes through the _pending_ beacon list */ |
| 1609 | spin_lock_bh(®_pending_beacons_lock); |
| 1610 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1611 | list_for_each_entry_safe(pending_beacon, tmp, |
| 1612 | ®_pending_beacons, list) { |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1613 | list_del_init(&pending_beacon->list); |
| 1614 | |
| 1615 | /* Applies the beacon hint to current wiphys */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 1616 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) |
| 1617 | wiphy_update_new_beacon(&rdev->wiphy, pending_beacon); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1618 | |
| 1619 | /* Remembers the beacon hint for new wiphys or reg changes */ |
| 1620 | list_add_tail(&pending_beacon->list, ®_beacon_list); |
| 1621 | } |
| 1622 | |
| 1623 | spin_unlock_bh(®_pending_beacons_lock); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1624 | } |
| 1625 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1626 | static void reg_todo(struct work_struct *work) |
| 1627 | { |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 1628 | rtnl_lock(); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1629 | reg_process_pending_hints(); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1630 | reg_process_pending_beacon_hints(); |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 1631 | rtnl_unlock(); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1632 | } |
| 1633 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1634 | static void queue_regulatory_request(struct regulatory_request *request) |
| 1635 | { |
Johannes Berg | d4f2c88 | 2012-12-03 18:59:58 +0100 | [diff] [blame] | 1636 | request->alpha2[0] = toupper(request->alpha2[0]); |
| 1637 | request->alpha2[1] = toupper(request->alpha2[1]); |
John W. Linville | c61029c | 2010-08-05 14:26:24 -0400 | [diff] [blame] | 1638 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1639 | spin_lock(®_requests_lock); |
| 1640 | list_add_tail(&request->list, ®_requests_list); |
| 1641 | spin_unlock(®_requests_lock); |
| 1642 | |
| 1643 | schedule_work(®_work); |
| 1644 | } |
| 1645 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1646 | /* |
| 1647 | * Core regulatory hint -- happens during cfg80211_init() |
| 1648 | * and when we restore regulatory settings. |
| 1649 | */ |
Luis R. Rodriguez | ba25c14 | 2009-02-21 00:04:23 -0500 | [diff] [blame] | 1650 | static int regulatory_hint_core(const char *alpha2) |
| 1651 | { |
| 1652 | struct regulatory_request *request; |
| 1653 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1654 | request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); |
Luis R. Rodriguez | ba25c14 | 2009-02-21 00:04:23 -0500 | [diff] [blame] | 1655 | if (!request) |
| 1656 | return -ENOMEM; |
| 1657 | |
| 1658 | request->alpha2[0] = alpha2[0]; |
| 1659 | request->alpha2[1] = alpha2[1]; |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1660 | request->initiator = NL80211_REGDOM_SET_BY_CORE; |
Luis R. Rodriguez | ba25c14 | 2009-02-21 00:04:23 -0500 | [diff] [blame] | 1661 | |
Luis R. Rodriguez | 31e9972 | 2010-11-17 21:46:06 -0800 | [diff] [blame] | 1662 | queue_regulatory_request(request); |
Luis R. Rodriguez | 5078b2e | 2009-05-13 17:04:42 -0400 | [diff] [blame] | 1663 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1664 | return 0; |
Luis R. Rodriguez | ba25c14 | 2009-02-21 00:04:23 -0500 | [diff] [blame] | 1665 | } |
| 1666 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1667 | /* User hints */ |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1668 | int regulatory_hint_user(const char *alpha2, |
| 1669 | enum nl80211_user_reg_hint_type user_reg_hint_type) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1670 | { |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1671 | struct regulatory_request *request; |
| 1672 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1673 | if (WARN_ON(!alpha2)) |
| 1674 | return -EINVAL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1675 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1676 | request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); |
| 1677 | if (!request) |
| 1678 | return -ENOMEM; |
| 1679 | |
Johannes Berg | f417376 | 2012-12-03 18:23:37 +0100 | [diff] [blame] | 1680 | request->wiphy_idx = WIPHY_IDX_INVALID; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1681 | request->alpha2[0] = alpha2[0]; |
| 1682 | request->alpha2[1] = alpha2[1]; |
Luis R. Rodriguez | e12822e | 2010-01-04 11:37:39 -0500 | [diff] [blame] | 1683 | request->initiator = NL80211_REGDOM_SET_BY_USER; |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1684 | request->user_reg_hint_type = user_reg_hint_type; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1685 | |
| 1686 | queue_regulatory_request(request); |
| 1687 | |
| 1688 | return 0; |
| 1689 | } |
| 1690 | |
| 1691 | /* Driver hints */ |
| 1692 | int regulatory_hint(struct wiphy *wiphy, const char *alpha2) |
| 1693 | { |
| 1694 | struct regulatory_request *request; |
| 1695 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1696 | if (WARN_ON(!alpha2 || !wiphy)) |
| 1697 | return -EINVAL; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1698 | |
| 1699 | request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); |
| 1700 | if (!request) |
| 1701 | return -ENOMEM; |
| 1702 | |
| 1703 | request->wiphy_idx = get_wiphy_idx(wiphy); |
| 1704 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1705 | request->alpha2[0] = alpha2[0]; |
| 1706 | request->alpha2[1] = alpha2[1]; |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1707 | request->initiator = NL80211_REGDOM_SET_BY_DRIVER; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1708 | |
| 1709 | queue_regulatory_request(request); |
| 1710 | |
| 1711 | return 0; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1712 | } |
| 1713 | EXPORT_SYMBOL(regulatory_hint); |
| 1714 | |
Luis R. Rodriguez | 789fd03 | 2013-10-04 18:07:24 -0700 | [diff] [blame] | 1715 | void regulatory_hint_country_ie(struct wiphy *wiphy, enum ieee80211_band band, |
| 1716 | const u8 *country_ie, u8 country_ie_len) |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1717 | { |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1718 | char alpha2[2]; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1719 | enum environment_cap env = ENVIRON_ANY; |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 1720 | struct regulatory_request *request = NULL, *lr; |
Luis R. Rodriguez | d335fe6 | 2009-02-21 00:04:27 -0500 | [diff] [blame] | 1721 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1722 | /* IE len must be evenly divisible by 2 */ |
| 1723 | if (country_ie_len & 0x01) |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 1724 | return; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1725 | |
| 1726 | if (country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 1727 | return; |
| 1728 | |
| 1729 | request = kzalloc(sizeof(*request), GFP_KERNEL); |
| 1730 | if (!request) |
| 1731 | return; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1732 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1733 | alpha2[0] = country_ie[0]; |
| 1734 | alpha2[1] = country_ie[1]; |
| 1735 | |
| 1736 | if (country_ie[2] == 'I') |
| 1737 | env = ENVIRON_INDOOR; |
| 1738 | else if (country_ie[2] == 'O') |
| 1739 | env = ENVIRON_OUTDOOR; |
| 1740 | |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 1741 | rcu_read_lock(); |
| 1742 | lr = get_last_request(); |
| 1743 | |
| 1744 | if (unlikely(!lr)) |
| 1745 | goto out; |
| 1746 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 1747 | /* |
Luis R. Rodriguez | 8b19e6c | 2009-07-30 17:38:09 -0700 | [diff] [blame] | 1748 | * We will run this only upon a successful connection on cfg80211. |
Luis R. Rodriguez | 4b44c8b | 2009-07-30 17:38:07 -0700 | [diff] [blame] | 1749 | * We leave conflict resolution to the workqueue, where can hold |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 1750 | * the RTNL. |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 1751 | */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1752 | if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && |
| 1753 | lr->wiphy_idx != WIPHY_IDX_INVALID) |
Luis R. Rodriguez | 4b44c8b | 2009-07-30 17:38:07 -0700 | [diff] [blame] | 1754 | goto out; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1755 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1756 | request->wiphy_idx = get_wiphy_idx(wiphy); |
John W. Linville | 4f366c5 | 2010-07-15 14:57:33 -0400 | [diff] [blame] | 1757 | request->alpha2[0] = alpha2[0]; |
| 1758 | request->alpha2[1] = alpha2[1]; |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1759 | request->initiator = NL80211_REGDOM_SET_BY_COUNTRY_IE; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1760 | request->country_ie_env = env; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1761 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1762 | queue_regulatory_request(request); |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 1763 | request = NULL; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1764 | out: |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 1765 | kfree(request); |
| 1766 | rcu_read_unlock(); |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 1767 | } |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1768 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1769 | static void restore_alpha2(char *alpha2, bool reset_user) |
| 1770 | { |
| 1771 | /* indicates there is no alpha2 to consider for restoration */ |
| 1772 | alpha2[0] = '9'; |
| 1773 | alpha2[1] = '7'; |
| 1774 | |
| 1775 | /* The user setting has precedence over the module parameter */ |
| 1776 | if (is_user_regdom_saved()) { |
| 1777 | /* Unless we're asked to ignore it and reset it */ |
| 1778 | if (reset_user) { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1779 | REG_DBG_PRINT("Restoring regulatory settings including user preference\n"); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1780 | user_alpha2[0] = '9'; |
| 1781 | user_alpha2[1] = '7'; |
| 1782 | |
| 1783 | /* |
| 1784 | * If we're ignoring user settings, we still need to |
| 1785 | * check the module parameter to ensure we put things |
| 1786 | * back as they were for a full restore. |
| 1787 | */ |
| 1788 | if (!is_world_regdom(ieee80211_regdom)) { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1789 | REG_DBG_PRINT("Keeping preference on module parameter ieee80211_regdom: %c%c\n", |
| 1790 | ieee80211_regdom[0], ieee80211_regdom[1]); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1791 | alpha2[0] = ieee80211_regdom[0]; |
| 1792 | alpha2[1] = ieee80211_regdom[1]; |
| 1793 | } |
| 1794 | } else { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1795 | REG_DBG_PRINT("Restoring regulatory settings while preserving user preference for: %c%c\n", |
| 1796 | user_alpha2[0], user_alpha2[1]); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1797 | alpha2[0] = user_alpha2[0]; |
| 1798 | alpha2[1] = user_alpha2[1]; |
| 1799 | } |
| 1800 | } else if (!is_world_regdom(ieee80211_regdom)) { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1801 | REG_DBG_PRINT("Keeping preference on module parameter ieee80211_regdom: %c%c\n", |
| 1802 | ieee80211_regdom[0], ieee80211_regdom[1]); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1803 | alpha2[0] = ieee80211_regdom[0]; |
| 1804 | alpha2[1] = ieee80211_regdom[1]; |
| 1805 | } else |
Luis R. Rodriguez | d91e41b | 2010-10-20 10:18:59 -0700 | [diff] [blame] | 1806 | REG_DBG_PRINT("Restoring regulatory settings\n"); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1807 | } |
| 1808 | |
Rajkumar Manoharan | 5ce543d | 2011-12-07 21:50:08 +0530 | [diff] [blame] | 1809 | static void restore_custom_reg_settings(struct wiphy *wiphy) |
| 1810 | { |
| 1811 | struct ieee80211_supported_band *sband; |
| 1812 | enum ieee80211_band band; |
| 1813 | struct ieee80211_channel *chan; |
| 1814 | int i; |
| 1815 | |
| 1816 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 1817 | sband = wiphy->bands[band]; |
| 1818 | if (!sband) |
| 1819 | continue; |
| 1820 | for (i = 0; i < sband->n_channels; i++) { |
| 1821 | chan = &sband->channels[i]; |
| 1822 | chan->flags = chan->orig_flags; |
| 1823 | chan->max_antenna_gain = chan->orig_mag; |
| 1824 | chan->max_power = chan->orig_mpwr; |
Paul Stewart | 899852a | 2012-08-01 16:54:42 -0700 | [diff] [blame] | 1825 | chan->beacon_found = false; |
Rajkumar Manoharan | 5ce543d | 2011-12-07 21:50:08 +0530 | [diff] [blame] | 1826 | } |
| 1827 | } |
| 1828 | } |
| 1829 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1830 | /* |
| 1831 | * Restoring regulatory settings involves ingoring any |
| 1832 | * possibly stale country IE information and user regulatory |
| 1833 | * settings if so desired, this includes any beacon hints |
| 1834 | * learned as we could have traveled outside to another country |
| 1835 | * after disconnection. To restore regulatory settings we do |
| 1836 | * exactly what we did at bootup: |
| 1837 | * |
| 1838 | * - send a core regulatory hint |
| 1839 | * - send a user regulatory hint if applicable |
| 1840 | * |
| 1841 | * Device drivers that send a regulatory hint for a specific country |
| 1842 | * keep their own regulatory domain on wiphy->regd so that does does |
| 1843 | * not need to be remembered. |
| 1844 | */ |
| 1845 | static void restore_regulatory_settings(bool reset_user) |
| 1846 | { |
| 1847 | char alpha2[2]; |
Dmitry Shmidt | cee0bec | 2011-12-19 12:32:21 -0800 | [diff] [blame] | 1848 | char world_alpha2[2]; |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1849 | struct reg_beacon *reg_beacon, *btmp; |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 1850 | struct regulatory_request *reg_request, *tmp; |
| 1851 | LIST_HEAD(tmp_reg_req_list); |
Rajkumar Manoharan | 5ce543d | 2011-12-07 21:50:08 +0530 | [diff] [blame] | 1852 | struct cfg80211_registered_device *rdev; |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1853 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 1854 | ASSERT_RTNL(); |
| 1855 | |
Johannes Berg | 2d31986 | 2013-01-09 12:01:38 +0100 | [diff] [blame] | 1856 | reset_regdomains(true, &world_regdom); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1857 | restore_alpha2(alpha2, reset_user); |
| 1858 | |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 1859 | /* |
| 1860 | * If there's any pending requests we simply |
| 1861 | * stash them to a temporary pending queue and |
| 1862 | * add then after we've restored regulatory |
| 1863 | * settings. |
| 1864 | */ |
| 1865 | spin_lock(®_requests_lock); |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 1866 | list_for_each_entry_safe(reg_request, tmp, ®_requests_list, list) { |
| 1867 | if (reg_request->initiator != NL80211_REGDOM_SET_BY_USER) |
| 1868 | continue; |
| 1869 | list_move_tail(®_request->list, &tmp_reg_req_list); |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 1870 | } |
| 1871 | spin_unlock(®_requests_lock); |
| 1872 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1873 | /* Clear beacon hints */ |
| 1874 | spin_lock_bh(®_pending_beacons_lock); |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 1875 | list_for_each_entry_safe(reg_beacon, btmp, ®_pending_beacons, list) { |
| 1876 | list_del(®_beacon->list); |
| 1877 | kfree(reg_beacon); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1878 | } |
| 1879 | spin_unlock_bh(®_pending_beacons_lock); |
| 1880 | |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 1881 | list_for_each_entry_safe(reg_beacon, btmp, ®_beacon_list, list) { |
| 1882 | list_del(®_beacon->list); |
| 1883 | kfree(reg_beacon); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1884 | } |
| 1885 | |
| 1886 | /* First restore to the basic regulatory settings */ |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 1887 | world_alpha2[0] = cfg80211_world_regdom->alpha2[0]; |
| 1888 | world_alpha2[1] = cfg80211_world_regdom->alpha2[1]; |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1889 | |
Rajkumar Manoharan | 5ce543d | 2011-12-07 21:50:08 +0530 | [diff] [blame] | 1890 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| 1891 | if (rdev->wiphy.flags & WIPHY_FLAG_CUSTOM_REGULATORY) |
| 1892 | restore_custom_reg_settings(&rdev->wiphy); |
| 1893 | } |
| 1894 | |
Dmitry Shmidt | cee0bec | 2011-12-19 12:32:21 -0800 | [diff] [blame] | 1895 | regulatory_hint_core(world_alpha2); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1896 | |
| 1897 | /* |
| 1898 | * This restores the ieee80211_regdom module parameter |
| 1899 | * preference or the last user requested regulatory |
| 1900 | * settings, user regulatory settings takes precedence. |
| 1901 | */ |
| 1902 | if (is_an_alpha2(alpha2)) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1903 | regulatory_hint_user(user_alpha2, NL80211_USER_REG_HINT_USER); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1904 | |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 1905 | spin_lock(®_requests_lock); |
Johannes Berg | 11cff96 | 2012-12-03 18:56:41 +0100 | [diff] [blame] | 1906 | list_splice_tail_init(&tmp_reg_req_list, ®_requests_list); |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 1907 | spin_unlock(®_requests_lock); |
| 1908 | |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 1909 | REG_DBG_PRINT("Kicking the queue\n"); |
| 1910 | |
| 1911 | schedule_work(®_work); |
| 1912 | } |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 1913 | |
| 1914 | void regulatory_hint_disconnect(void) |
| 1915 | { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1916 | 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] | 1917 | restore_regulatory_settings(false); |
| 1918 | } |
| 1919 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1920 | static bool freq_is_chan_12_13_14(u16 freq) |
| 1921 | { |
Bruno Randolf | 59eb21a | 2011-01-17 13:37:28 +0900 | [diff] [blame] | 1922 | if (freq == ieee80211_channel_to_frequency(12, IEEE80211_BAND_2GHZ) || |
| 1923 | freq == ieee80211_channel_to_frequency(13, IEEE80211_BAND_2GHZ) || |
| 1924 | freq == ieee80211_channel_to_frequency(14, IEEE80211_BAND_2GHZ)) |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1925 | return true; |
| 1926 | return false; |
| 1927 | } |
| 1928 | |
Luis R. Rodriguez | 3ebfa6e | 2012-12-19 10:53:02 -0800 | [diff] [blame] | 1929 | static bool pending_reg_beacon(struct ieee80211_channel *beacon_chan) |
| 1930 | { |
| 1931 | struct reg_beacon *pending_beacon; |
| 1932 | |
| 1933 | list_for_each_entry(pending_beacon, ®_pending_beacons, list) |
| 1934 | if (beacon_chan->center_freq == |
| 1935 | pending_beacon->chan.center_freq) |
| 1936 | return true; |
| 1937 | return false; |
| 1938 | } |
| 1939 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1940 | int regulatory_hint_found_beacon(struct wiphy *wiphy, |
| 1941 | struct ieee80211_channel *beacon_chan, |
| 1942 | gfp_t gfp) |
| 1943 | { |
| 1944 | struct reg_beacon *reg_beacon; |
Luis R. Rodriguez | 3ebfa6e | 2012-12-19 10:53:02 -0800 | [diff] [blame] | 1945 | bool processing; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1946 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1947 | if (beacon_chan->beacon_found || |
| 1948 | beacon_chan->flags & IEEE80211_CHAN_RADAR || |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1949 | (beacon_chan->band == IEEE80211_BAND_2GHZ && |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1950 | !freq_is_chan_12_13_14(beacon_chan->center_freq))) |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1951 | return 0; |
| 1952 | |
Luis R. Rodriguez | 3ebfa6e | 2012-12-19 10:53:02 -0800 | [diff] [blame] | 1953 | spin_lock_bh(®_pending_beacons_lock); |
| 1954 | processing = pending_reg_beacon(beacon_chan); |
| 1955 | spin_unlock_bh(®_pending_beacons_lock); |
| 1956 | |
| 1957 | if (processing) |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1958 | return 0; |
| 1959 | |
| 1960 | reg_beacon = kzalloc(sizeof(struct reg_beacon), gfp); |
| 1961 | if (!reg_beacon) |
| 1962 | return -ENOMEM; |
| 1963 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1964 | 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] | 1965 | beacon_chan->center_freq, |
| 1966 | ieee80211_frequency_to_channel(beacon_chan->center_freq), |
| 1967 | wiphy_name(wiphy)); |
| 1968 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1969 | memcpy(®_beacon->chan, beacon_chan, |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1970 | sizeof(struct ieee80211_channel)); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1971 | |
| 1972 | /* |
| 1973 | * Since we can be called from BH or and non-BH context |
| 1974 | * we must use spin_lock_bh() |
| 1975 | */ |
| 1976 | spin_lock_bh(®_pending_beacons_lock); |
| 1977 | list_add_tail(®_beacon->list, ®_pending_beacons); |
| 1978 | spin_unlock_bh(®_pending_beacons_lock); |
| 1979 | |
| 1980 | schedule_work(®_work); |
| 1981 | |
| 1982 | return 0; |
| 1983 | } |
| 1984 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 1985 | static void print_rd_rules(const struct ieee80211_regdomain *rd) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1986 | { |
| 1987 | unsigned int i; |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 1988 | const struct ieee80211_reg_rule *reg_rule = NULL; |
| 1989 | const struct ieee80211_freq_range *freq_range = NULL; |
| 1990 | const struct ieee80211_power_rule *power_rule = NULL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1991 | |
Luis R. Rodriguez | 6653325 | 2011-12-20 12:23:37 -0800 | [diff] [blame] | 1992 | 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] | 1993 | |
| 1994 | for (i = 0; i < rd->n_reg_rules; i++) { |
| 1995 | reg_rule = &rd->reg_rules[i]; |
| 1996 | freq_range = ®_rule->freq_range; |
| 1997 | power_rule = ®_rule->power_rule; |
| 1998 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 1999 | /* |
| 2000 | * There may not be documentation for max antenna gain |
| 2001 | * in certain regions |
| 2002 | */ |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2003 | if (power_rule->max_antenna_gain) |
Luis R. Rodriguez | 6653325 | 2011-12-20 12:23:37 -0800 | [diff] [blame] | 2004 | 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] | 2005 | freq_range->start_freq_khz, |
| 2006 | freq_range->end_freq_khz, |
| 2007 | freq_range->max_bandwidth_khz, |
| 2008 | power_rule->max_antenna_gain, |
| 2009 | power_rule->max_eirp); |
| 2010 | else |
Luis R. Rodriguez | 6653325 | 2011-12-20 12:23:37 -0800 | [diff] [blame] | 2011 | 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] | 2012 | freq_range->start_freq_khz, |
| 2013 | freq_range->end_freq_khz, |
| 2014 | freq_range->max_bandwidth_khz, |
| 2015 | power_rule->max_eirp); |
| 2016 | } |
| 2017 | } |
| 2018 | |
Luis R. Rodriguez | 8b60b07 | 2011-10-11 10:59:02 -0700 | [diff] [blame] | 2019 | bool reg_supported_dfs_region(u8 dfs_region) |
| 2020 | { |
| 2021 | switch (dfs_region) { |
| 2022 | case NL80211_DFS_UNSET: |
| 2023 | case NL80211_DFS_FCC: |
| 2024 | case NL80211_DFS_ETSI: |
| 2025 | case NL80211_DFS_JP: |
| 2026 | return true; |
| 2027 | default: |
| 2028 | REG_DBG_PRINT("Ignoring uknown DFS master region: %d\n", |
| 2029 | dfs_region); |
| 2030 | return false; |
| 2031 | } |
| 2032 | } |
| 2033 | |
| 2034 | static void print_dfs_region(u8 dfs_region) |
| 2035 | { |
| 2036 | if (!dfs_region) |
| 2037 | return; |
| 2038 | |
| 2039 | switch (dfs_region) { |
| 2040 | case NL80211_DFS_FCC: |
| 2041 | pr_info(" DFS Master region FCC"); |
| 2042 | break; |
| 2043 | case NL80211_DFS_ETSI: |
| 2044 | pr_info(" DFS Master region ETSI"); |
| 2045 | break; |
| 2046 | case NL80211_DFS_JP: |
| 2047 | pr_info(" DFS Master region JP"); |
| 2048 | break; |
| 2049 | default: |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2050 | pr_info(" DFS Master region Unknown"); |
Luis R. Rodriguez | 8b60b07 | 2011-10-11 10:59:02 -0700 | [diff] [blame] | 2051 | break; |
| 2052 | } |
| 2053 | } |
| 2054 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 2055 | static void print_regdomain(const struct ieee80211_regdomain *rd) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2056 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2057 | struct regulatory_request *lr = get_last_request(); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2058 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2059 | if (is_intersected_alpha2(rd->alpha2)) { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2060 | if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 2061 | struct cfg80211_registered_device *rdev; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2062 | rdev = cfg80211_rdev_by_wiphy_idx(lr->wiphy_idx); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 2063 | if (rdev) { |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2064 | pr_info("Current regulatory domain updated by AP to: %c%c\n", |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 2065 | rdev->country_ie_alpha2[0], |
| 2066 | rdev->country_ie_alpha2[1]); |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2067 | } else |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2068 | pr_info("Current regulatory domain intersected:\n"); |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2069 | } else |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2070 | pr_info("Current regulatory domain intersected:\n"); |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2071 | } else if (is_world_regdom(rd->alpha2)) { |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2072 | pr_info("World regulatory domain updated:\n"); |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2073 | } else { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2074 | if (is_unknown_alpha2(rd->alpha2)) |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2075 | 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] | 2076 | else { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2077 | if (reg_request_cell_base(lr)) |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2078 | 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] | 2079 | rd->alpha2[0], rd->alpha2[1]); |
| 2080 | else |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2081 | pr_info("Regulatory domain changed to country: %c%c\n", |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2082 | rd->alpha2[0], rd->alpha2[1]); |
| 2083 | } |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2084 | } |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2085 | |
Luis R. Rodriguez | 8b60b07 | 2011-10-11 10:59:02 -0700 | [diff] [blame] | 2086 | print_dfs_region(rd->dfs_region); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2087 | print_rd_rules(rd); |
| 2088 | } |
| 2089 | |
Johannes Berg | 2df7816 | 2008-10-28 16:49:41 +0100 | [diff] [blame] | 2090 | static void print_regdomain_info(const struct ieee80211_regdomain *rd) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2091 | { |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2092 | 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] | 2093 | print_rd_rules(rd); |
| 2094 | } |
| 2095 | |
Johannes Berg | d2372b3 | 2008-10-24 20:32:20 +0200 | [diff] [blame] | 2096 | /* Takes ownership of rd only if it doesn't fail */ |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 2097 | static int __set_regdom(const struct ieee80211_regdomain *rd) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2098 | { |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 2099 | const struct ieee80211_regdomain *regd; |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 2100 | const struct ieee80211_regdomain *intersected_rd = NULL; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 2101 | struct wiphy *request_wiphy; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2102 | struct regulatory_request *lr = get_last_request(); |
Johannes Berg | 6913b49 | 2012-12-04 00:48:59 +0100 | [diff] [blame] | 2103 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2104 | /* Some basic sanity checks first */ |
| 2105 | |
Johannes Berg | 6913b49 | 2012-12-04 00:48:59 +0100 | [diff] [blame] | 2106 | if (!reg_is_valid_request(rd->alpha2)) |
| 2107 | return -EINVAL; |
| 2108 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2109 | if (is_world_regdom(rd->alpha2)) { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2110 | update_world_regdomain(rd); |
| 2111 | return 0; |
| 2112 | } |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2113 | |
| 2114 | if (!is_alpha2_set(rd->alpha2) && !is_an_alpha2(rd->alpha2) && |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2115 | !is_unknown_alpha2(rd->alpha2)) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2116 | return -EINVAL; |
| 2117 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2118 | /* |
| 2119 | * Lets only bother proceeding on the same alpha2 if the current |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2120 | * rd is non static (it means CRDA was present and was used last) |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2121 | * and the pending request came in from a country IE |
| 2122 | */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2123 | if (lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) { |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2124 | /* |
| 2125 | * If someone else asked us to change the rd lets only bother |
| 2126 | * checking if the alpha2 changes if CRDA was already called |
| 2127 | */ |
John W. Linville | baeb66f | 2009-12-18 17:59:02 -0500 | [diff] [blame] | 2128 | if (!regdom_changes(rd->alpha2)) |
Kalle Valo | 9590853 | 2012-07-12 15:33:58 +0300 | [diff] [blame] | 2129 | return -EALREADY; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2130 | } |
| 2131 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2132 | /* |
| 2133 | * Now lets set the regulatory domain, update all driver channels |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2134 | * and finally inform them of what we have done, in case they want |
| 2135 | * to review or adjust their own settings based on their own |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2136 | * internal EEPROM data |
| 2137 | */ |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2138 | |
Luis R. Rodriguez | 8375af3 | 2008-11-12 14:21:57 -0800 | [diff] [blame] | 2139 | if (!is_valid_rd(rd)) { |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2140 | pr_err("Invalid regulatory domain detected:\n"); |
Luis R. Rodriguez | 8375af3 | 2008-11-12 14:21:57 -0800 | [diff] [blame] | 2141 | print_regdomain_info(rd); |
| 2142 | return -EINVAL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2143 | } |
| 2144 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2145 | request_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx); |
Luis R. Rodriguez | 0bac71a | 2011-11-28 16:47:16 -0500 | [diff] [blame] | 2146 | if (!request_wiphy && |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2147 | (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER || |
| 2148 | lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE)) { |
Luis R. Rodriguez | 0bac71a | 2011-11-28 16:47:16 -0500 | [diff] [blame] | 2149 | schedule_delayed_work(®_timeout, 0); |
Johannes Berg | de3584b | 2011-11-21 10:44:00 +0100 | [diff] [blame] | 2150 | return -ENODEV; |
| 2151 | } |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 2152 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2153 | if (!lr->intersect) { |
| 2154 | if (lr->initiator != NL80211_REGDOM_SET_BY_DRIVER) { |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 2155 | reset_regdomains(false, rd); |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 2156 | return 0; |
| 2157 | } |
| 2158 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2159 | /* |
| 2160 | * For a driver hint, lets copy the regulatory domain the |
| 2161 | * driver wanted to the wiphy to deal with conflicts |
| 2162 | */ |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 2163 | |
Luis R. Rodriguez | 558f6d3 | 2009-06-08 18:54:37 -0700 | [diff] [blame] | 2164 | /* |
| 2165 | * Userspace could have sent two replies with only |
| 2166 | * one kernel request. |
| 2167 | */ |
| 2168 | if (request_wiphy->regd) |
| 2169 | return -EALREADY; |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 2170 | |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 2171 | regd = reg_copy_regd(rd); |
| 2172 | if (IS_ERR(regd)) |
| 2173 | return PTR_ERR(regd); |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 2174 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2175 | rcu_assign_pointer(request_wiphy->regd, regd); |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 2176 | reset_regdomains(false, rd); |
Luis R. Rodriguez | b8295ac | 2008-11-12 14:21:58 -0800 | [diff] [blame] | 2177 | return 0; |
| 2178 | } |
| 2179 | |
| 2180 | /* Intersection requires a bit more work */ |
| 2181 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2182 | if (lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) { |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2183 | intersected_rd = regdom_intersect(rd, get_cfg80211_regdom()); |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 2184 | if (!intersected_rd) |
| 2185 | return -EINVAL; |
Luis R. Rodriguez | b8295ac | 2008-11-12 14:21:58 -0800 | [diff] [blame] | 2186 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2187 | /* |
| 2188 | * We can trash what CRDA provided now. |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 2189 | * However if a driver requested this specific regulatory |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2190 | * domain we keep it for its private use |
| 2191 | */ |
Larry Finger | b7566fc | 2013-02-04 15:33:44 -0600 | [diff] [blame] | 2192 | if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER) { |
| 2193 | const struct ieee80211_regdomain *tmp; |
| 2194 | |
| 2195 | tmp = get_wiphy_regdom(request_wiphy); |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2196 | rcu_assign_pointer(request_wiphy->regd, rd); |
Larry Finger | b7566fc | 2013-02-04 15:33:44 -0600 | [diff] [blame] | 2197 | rcu_free_regdom(tmp); |
| 2198 | } else { |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 2199 | kfree(rd); |
Larry Finger | b7566fc | 2013-02-04 15:33:44 -0600 | [diff] [blame] | 2200 | } |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 2201 | |
Luis R. Rodriguez | b8295ac | 2008-11-12 14:21:58 -0800 | [diff] [blame] | 2202 | rd = NULL; |
| 2203 | |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 2204 | reset_regdomains(false, intersected_rd); |
Luis R. Rodriguez | b8295ac | 2008-11-12 14:21:58 -0800 | [diff] [blame] | 2205 | |
| 2206 | return 0; |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 2207 | } |
| 2208 | |
Alan Cox | f3baed5 | 2012-09-17 11:54:15 +0100 | [diff] [blame] | 2209 | return -EINVAL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2210 | } |
| 2211 | |
| 2212 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2213 | /* |
| 2214 | * Use this call to set the current regulatory domain. Conflicts with |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2215 | * multiple drivers can be ironed out later. Caller must've already |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2216 | * kmalloc'd the rd structure. |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2217 | */ |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 2218 | int set_regdom(const struct ieee80211_regdomain *rd) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2219 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2220 | struct regulatory_request *lr; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2221 | int r; |
| 2222 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2223 | lr = get_last_request(); |
Luis R. Rodriguez | abc7381 | 2009-07-30 17:38:08 -0700 | [diff] [blame] | 2224 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2225 | /* Note that this doesn't update the wiphys, this is done below */ |
| 2226 | r = __set_regdom(rd); |
Johannes Berg | d2372b3 | 2008-10-24 20:32:20 +0200 | [diff] [blame] | 2227 | if (r) { |
Kalle Valo | 9590853 | 2012-07-12 15:33:58 +0300 | [diff] [blame] | 2228 | if (r == -EALREADY) |
| 2229 | reg_set_request_processed(); |
| 2230 | |
Johannes Berg | d2372b3 | 2008-10-24 20:32:20 +0200 | [diff] [blame] | 2231 | kfree(rd); |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2232 | return r; |
Johannes Berg | d2372b3 | 2008-10-24 20:32:20 +0200 | [diff] [blame] | 2233 | } |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2234 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2235 | /* This would make this whole thing pointless */ |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2236 | if (WARN_ON(!lr->intersect && rd != get_cfg80211_regdom())) |
| 2237 | return -EINVAL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2238 | |
| 2239 | /* update all wiphys now with the new established regulatory domain */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2240 | update_all_wiphy_regulatory(lr->initiator); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2241 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2242 | print_regdomain(get_cfg80211_regdom()); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2243 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2244 | nl80211_send_reg_change_event(lr); |
Luis R. Rodriguez | 73d54c9 | 2009-03-09 22:07:42 -0400 | [diff] [blame] | 2245 | |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 2246 | reg_set_request_processed(); |
| 2247 | |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2248 | return 0; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2249 | } |
| 2250 | |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2251 | int reg_device_uevent(struct device *dev, struct kobj_uevent_env *env) |
| 2252 | { |
Johannes Berg | 4a484cf | 2013-01-09 10:22:07 +0100 | [diff] [blame] | 2253 | struct regulatory_request *lr; |
| 2254 | u8 alpha2[2]; |
| 2255 | bool add = false; |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2256 | |
Johannes Berg | 4a484cf | 2013-01-09 10:22:07 +0100 | [diff] [blame] | 2257 | rcu_read_lock(); |
| 2258 | lr = get_last_request(); |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2259 | if (lr && !lr->processed) { |
Johannes Berg | 4a484cf | 2013-01-09 10:22:07 +0100 | [diff] [blame] | 2260 | memcpy(alpha2, lr->alpha2, 2); |
| 2261 | add = true; |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2262 | } |
Johannes Berg | 4a484cf | 2013-01-09 10:22:07 +0100 | [diff] [blame] | 2263 | rcu_read_unlock(); |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2264 | |
Johannes Berg | 4a484cf | 2013-01-09 10:22:07 +0100 | [diff] [blame] | 2265 | if (add) |
| 2266 | return add_uevent_var(env, "COUNTRY=%c%c", |
| 2267 | alpha2[0], alpha2[1]); |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2268 | return 0; |
| 2269 | } |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2270 | |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2271 | void wiphy_regulatory_register(struct wiphy *wiphy) |
| 2272 | { |
Arik Nemtsov | 23df0b7 | 2013-07-21 16:36:48 +0300 | [diff] [blame] | 2273 | struct regulatory_request *lr; |
| 2274 | |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2275 | if (!reg_dev_ignore_cell_hint(wiphy)) |
| 2276 | reg_num_devs_support_basehint++; |
| 2277 | |
Arik Nemtsov | 23df0b7 | 2013-07-21 16:36:48 +0300 | [diff] [blame] | 2278 | lr = get_last_request(); |
| 2279 | wiphy_update_regulatory(wiphy, lr->initiator); |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2280 | } |
| 2281 | |
Luis R. Rodriguez | bfead08 | 2012-07-12 11:49:19 -0700 | [diff] [blame] | 2282 | void wiphy_regulatory_deregister(struct wiphy *wiphy) |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2283 | { |
Luis R. Rodriguez | 0ad8aca | 2009-03-24 21:21:08 -0400 | [diff] [blame] | 2284 | struct wiphy *request_wiphy = NULL; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2285 | struct regulatory_request *lr; |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 2286 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2287 | lr = get_last_request(); |
Luis R. Rodriguez | abc7381 | 2009-07-30 17:38:08 -0700 | [diff] [blame] | 2288 | |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2289 | if (!reg_dev_ignore_cell_hint(wiphy)) |
| 2290 | reg_num_devs_support_basehint--; |
| 2291 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2292 | rcu_free_regdom(get_wiphy_regdom(wiphy)); |
| 2293 | rcu_assign_pointer(wiphy->regd, NULL); |
Chris Wright | 0ef9ccd | 2009-04-24 14:09:31 -0700 | [diff] [blame] | 2294 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2295 | if (lr) |
| 2296 | request_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx); |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 2297 | |
Chris Wright | 0ef9ccd | 2009-04-24 14:09:31 -0700 | [diff] [blame] | 2298 | if (!request_wiphy || request_wiphy != wiphy) |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2299 | return; |
Chris Wright | 0ef9ccd | 2009-04-24 14:09:31 -0700 | [diff] [blame] | 2300 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2301 | lr->wiphy_idx = WIPHY_IDX_INVALID; |
| 2302 | lr->country_ie_env = ENVIRON_ANY; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2303 | } |
| 2304 | |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 2305 | static void reg_timeout_work(struct work_struct *work) |
| 2306 | { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2307 | 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] | 2308 | rtnl_lock(); |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 2309 | restore_regulatory_settings(true); |
Johannes Berg | f77b86d | 2013-06-24 15:43:38 +0200 | [diff] [blame] | 2310 | rtnl_unlock(); |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 2311 | } |
| 2312 | |
Uwe Kleine-König | 2fcc9f7 | 2010-06-18 09:38:55 +0200 | [diff] [blame] | 2313 | int __init regulatory_init(void) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2314 | { |
Luis R. Rodriguez | bcf4f99 | 2009-02-21 00:04:24 -0500 | [diff] [blame] | 2315 | int err = 0; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 2316 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2317 | reg_pdev = platform_device_register_simple("regulatory", 0, NULL, 0); |
| 2318 | if (IS_ERR(reg_pdev)) |
| 2319 | return PTR_ERR(reg_pdev); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 2320 | |
Scott James Remnant | 4d9d88d | 2011-03-08 10:45:30 -0800 | [diff] [blame] | 2321 | reg_pdev->dev.type = ®_device_type; |
| 2322 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2323 | spin_lock_init(®_requests_lock); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2324 | spin_lock_init(®_pending_beacons_lock); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2325 | |
Luis R. Rodriguez | 80007ef | 2012-03-23 07:23:31 -0700 | [diff] [blame] | 2326 | reg_regdb_size_check(); |
| 2327 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2328 | rcu_assign_pointer(cfg80211_regdomain, cfg80211_world_regdom); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 2329 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2330 | user_alpha2[0] = '9'; |
| 2331 | user_alpha2[1] = '7'; |
| 2332 | |
Luis R. Rodriguez | ae9e4b0 | 2009-07-14 20:23:15 -0400 | [diff] [blame] | 2333 | /* We always try to get an update for the static regdomain */ |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2334 | err = regulatory_hint_core(cfg80211_world_regdom->alpha2); |
Luis R. Rodriguez | bcf4f99 | 2009-02-21 00:04:24 -0500 | [diff] [blame] | 2335 | if (err) { |
| 2336 | if (err == -ENOMEM) |
| 2337 | return err; |
| 2338 | /* |
| 2339 | * N.B. kobject_uevent_env() can fail mainly for when we're out |
| 2340 | * memory which is handled and propagated appropriately above |
| 2341 | * but it can also fail during a netlink_broadcast() or during |
| 2342 | * early boot for call_usermodehelper(). For now treat these |
| 2343 | * errors as non-fatal. |
| 2344 | */ |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2345 | 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] | 2346 | } |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 2347 | |
Luis R. Rodriguez | ae9e4b0 | 2009-07-14 20:23:15 -0400 | [diff] [blame] | 2348 | /* |
| 2349 | * Finally, if the user set the module parameter treat it |
| 2350 | * as a user hint. |
| 2351 | */ |
| 2352 | if (!is_world_regdom(ieee80211_regdom)) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2353 | regulatory_hint_user(ieee80211_regdom, |
| 2354 | NL80211_USER_REG_HINT_USER); |
Luis R. Rodriguez | ae9e4b0 | 2009-07-14 20:23:15 -0400 | [diff] [blame] | 2355 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2356 | return 0; |
| 2357 | } |
| 2358 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2359 | void regulatory_exit(void) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2360 | { |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2361 | struct regulatory_request *reg_request, *tmp; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2362 | struct reg_beacon *reg_beacon, *btmp; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2363 | |
| 2364 | cancel_work_sync(®_work); |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 2365 | cancel_delayed_work_sync(®_timeout); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2366 | |
Johannes Berg | 9027b14 | 2012-12-03 17:59:24 +0100 | [diff] [blame] | 2367 | /* Lock to suppress warnings */ |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2368 | rtnl_lock(); |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 2369 | reset_regdomains(true, NULL); |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2370 | rtnl_unlock(); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 2371 | |
Luis R. Rodriguez | 58ebacc | 2011-11-08 14:28:06 -0800 | [diff] [blame] | 2372 | dev_set_uevent_suppress(®_pdev->dev, true); |
Johannes Berg | f6037d0 | 2008-10-21 11:01:33 +0200 | [diff] [blame] | 2373 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2374 | platform_device_unregister(reg_pdev); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 2375 | |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 2376 | list_for_each_entry_safe(reg_beacon, btmp, ®_pending_beacons, list) { |
| 2377 | list_del(®_beacon->list); |
| 2378 | kfree(reg_beacon); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2379 | } |
| 2380 | |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 2381 | list_for_each_entry_safe(reg_beacon, btmp, ®_beacon_list, list) { |
| 2382 | list_del(®_beacon->list); |
| 2383 | kfree(reg_beacon); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2384 | } |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2385 | |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 2386 | list_for_each_entry_safe(reg_request, tmp, ®_requests_list, list) { |
| 2387 | list_del(®_request->list); |
| 2388 | kfree(reg_request); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2389 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 2390 | } |