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 | 2740f0c | 2014-09-03 15:24:58 +0300 | [diff] [blame] | 6 | * Copyright 2013-2014 Intel Mobile Communications GmbH |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 7 | * |
Luis R. Rodriguez | 3b77d5e | 2011-12-20 12:23:38 -0800 | [diff] [blame] | 8 | * Permission to use, copy, modify, and/or distribute this software for any |
| 9 | * purpose with or without fee is hereby granted, provided that the above |
| 10 | * copyright notice and this permission notice appear in all copies. |
| 11 | * |
| 12 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 13 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 14 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 15 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 16 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 17 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 18 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 19 | */ |
| 20 | |
Luis R. Rodriguez | 3b77d5e | 2011-12-20 12:23:38 -0800 | [diff] [blame] | 21 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 22 | /** |
| 23 | * DOC: Wireless regulatory infrastructure |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 24 | * |
| 25 | * The usual implementation is for a driver to read a device EEPROM to |
| 26 | * determine which regulatory domain it should be operating under, then |
| 27 | * looking up the allowable channels in a driver-local table and finally |
| 28 | * registering those channels in the wiphy structure. |
| 29 | * |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 30 | * Another set of compliance enforcement is for drivers to use their |
| 31 | * own compliance limits which can be stored on the EEPROM. The host |
| 32 | * driver or firmware may ensure these are used. |
| 33 | * |
| 34 | * In addition to all this we provide an extra layer of regulatory |
| 35 | * conformance. For drivers which do not have any regulatory |
| 36 | * information CRDA provides the complete regulatory solution. |
| 37 | * For others it provides a community effort on further restrictions |
| 38 | * to enhance compliance. |
| 39 | * |
| 40 | * Note: When number of rules --> infinity we will not be able to |
| 41 | * index on alpha2 any more, instead we'll probably have to |
| 42 | * rely on some SHA1 checksum of the regdomain for example. |
| 43 | * |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 44 | */ |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 45 | |
| 46 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 47 | |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 48 | #include <linux/kernel.h> |
Paul Gortmaker | bc3b2d7 | 2011-07-15 11:47:34 -0400 | [diff] [blame] | 49 | #include <linux/export.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 50 | #include <linux/slab.h> |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 51 | #include <linux/list.h> |
John W. Linville | c61029c | 2010-08-05 14:26:24 -0400 | [diff] [blame] | 52 | #include <linux/ctype.h> |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 53 | #include <linux/nl80211.h> |
| 54 | #include <linux/platform_device.h> |
Paul Gortmaker | d9b9384 | 2011-09-18 13:21:27 -0400 | [diff] [blame] | 55 | #include <linux/moduleparam.h> |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 56 | #include <net/cfg80211.h> |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 57 | #include "core.h" |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 58 | #include "reg.h" |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 59 | #include "rdev-ops.h" |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 60 | #include "regdb.h" |
Luis R. Rodriguez | 73d54c9 | 2009-03-09 22:07:42 -0400 | [diff] [blame] | 61 | #include "nl80211.h" |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 62 | |
Luis R. Rodriguez | 4113f75 | 2010-01-04 11:50:11 -0500 | [diff] [blame] | 63 | #ifdef CONFIG_CFG80211_REG_DEBUG |
Joe Perches | 12c5ffb | 2011-07-29 14:51:25 -0700 | [diff] [blame] | 64 | #define REG_DBG_PRINT(format, args...) \ |
| 65 | printk(KERN_DEBUG pr_fmt(format), ##args) |
Luis R. Rodriguez | 4113f75 | 2010-01-04 11:50:11 -0500 | [diff] [blame] | 66 | #else |
John W. Linville | 8271195 | 2010-01-05 17:57:20 -0500 | [diff] [blame] | 67 | #define REG_DBG_PRINT(args...) |
Luis R. Rodriguez | 4113f75 | 2010-01-04 11:50:11 -0500 | [diff] [blame] | 68 | #endif |
| 69 | |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 70 | /* |
| 71 | * Grace period we give before making sure all current interfaces reside on |
| 72 | * channels allowed by the current regulatory domain. |
| 73 | */ |
| 74 | #define REG_ENFORCE_GRACE_MS 60000 |
| 75 | |
Ilan Peer | 52616f2 | 2014-02-25 16:26:00 +0200 | [diff] [blame] | 76 | /** |
| 77 | * enum reg_request_treatment - regulatory request treatment |
| 78 | * |
| 79 | * @REG_REQ_OK: continue processing the regulatory request |
| 80 | * @REG_REQ_IGNORE: ignore the regulatory request |
| 81 | * @REG_REQ_INTERSECT: the regulatory domain resulting from this request should |
| 82 | * be intersected with the current one. |
| 83 | * @REG_REQ_ALREADY_SET: the regulatory request will not change the current |
| 84 | * regulatory settings, and no further processing is required. |
Ilan Peer | 52616f2 | 2014-02-25 16:26:00 +0200 | [diff] [blame] | 85 | */ |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 86 | enum reg_request_treatment { |
| 87 | REG_REQ_OK, |
| 88 | REG_REQ_IGNORE, |
| 89 | REG_REQ_INTERSECT, |
| 90 | REG_REQ_ALREADY_SET, |
| 91 | }; |
| 92 | |
Luis R. Rodriguez | a042994 | 2011-11-28 16:47:15 -0500 | [diff] [blame] | 93 | static struct regulatory_request core_request_world = { |
| 94 | .initiator = NL80211_REGDOM_SET_BY_CORE, |
| 95 | .alpha2[0] = '0', |
| 96 | .alpha2[1] = '0', |
| 97 | .intersect = false, |
| 98 | .processed = true, |
| 99 | .country_ie_env = ENVIRON_ANY, |
| 100 | }; |
| 101 | |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 102 | /* |
| 103 | * Receipt of information from last regulatory request, |
| 104 | * protected by RTNL (and can be accessed with RCU protection) |
| 105 | */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 106 | static struct regulatory_request __rcu *last_request = |
Johannes Berg | cec3f0e | 2014-12-12 12:26:25 +0100 | [diff] [blame] | 107 | (void __force __rcu *)&core_request_world; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 108 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 109 | /* To trigger userspace events */ |
| 110 | static struct platform_device *reg_pdev; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 111 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 112 | /* |
| 113 | * Central wireless core regulatory domains, we only need two, |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 114 | * 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] | 115 | * information to give us an alpha2. |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 116 | * (protected by RTNL, can be read under RCU) |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 117 | */ |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 118 | const struct ieee80211_regdomain __rcu *cfg80211_regdomain; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 119 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 120 | /* |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 121 | * Number of devices that registered to the core |
| 122 | * that support cellular base station regulatory hints |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 123 | * (protected by RTNL) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 124 | */ |
| 125 | static int reg_num_devs_support_basehint; |
| 126 | |
Ilan Peer | 52616f2 | 2014-02-25 16:26:00 +0200 | [diff] [blame] | 127 | /* |
| 128 | * State variable indicating if the platform on which the devices |
| 129 | * are attached is operating in an indoor environment. The state variable |
| 130 | * is relevant for all registered devices. |
Ilan Peer | 52616f2 | 2014-02-25 16:26:00 +0200 | [diff] [blame] | 131 | */ |
| 132 | static bool reg_is_indoor; |
Ilan peer | 0505075 | 2015-03-04 00:32:06 -0500 | [diff] [blame] | 133 | static spinlock_t reg_indoor_lock; |
| 134 | |
| 135 | /* Used to track the userspace process controlling the indoor setting */ |
| 136 | static u32 reg_is_indoor_portid; |
Ilan Peer | 52616f2 | 2014-02-25 16:26:00 +0200 | [diff] [blame] | 137 | |
Ilan peer | c37722b | 2015-03-30 15:15:49 +0300 | [diff] [blame] | 138 | /* Max number of consecutive attempts to communicate with CRDA */ |
| 139 | #define REG_MAX_CRDA_TIMEOUTS 10 |
| 140 | |
| 141 | static u32 reg_crda_timeouts; |
| 142 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 143 | static const struct ieee80211_regdomain *get_cfg80211_regdom(void) |
| 144 | { |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 145 | return rtnl_dereference(cfg80211_regdomain); |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 146 | } |
| 147 | |
Arik Nemtsov | ad30ca2 | 2014-12-15 19:25:59 +0200 | [diff] [blame] | 148 | const struct ieee80211_regdomain *get_wiphy_regdom(struct wiphy *wiphy) |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 149 | { |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 150 | return rtnl_dereference(wiphy->regd); |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 151 | } |
| 152 | |
Luis R. Rodriguez | 3ef121b | 2013-11-13 18:54:05 +0100 | [diff] [blame] | 153 | static const char *reg_dfs_region_str(enum nl80211_dfs_regions dfs_region) |
| 154 | { |
| 155 | switch (dfs_region) { |
| 156 | case NL80211_DFS_UNSET: |
| 157 | return "unset"; |
| 158 | case NL80211_DFS_FCC: |
| 159 | return "FCC"; |
| 160 | case NL80211_DFS_ETSI: |
| 161 | return "ETSI"; |
| 162 | case NL80211_DFS_JP: |
| 163 | return "JP"; |
| 164 | } |
| 165 | return "Unknown"; |
| 166 | } |
| 167 | |
Luis R. Rodriguez | 6c47479 | 2013-11-25 20:56:09 +0100 | [diff] [blame] | 168 | enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy) |
| 169 | { |
| 170 | const struct ieee80211_regdomain *regd = NULL; |
| 171 | const struct ieee80211_regdomain *wiphy_regd = NULL; |
| 172 | |
| 173 | regd = get_cfg80211_regdom(); |
| 174 | if (!wiphy) |
| 175 | goto out; |
| 176 | |
| 177 | wiphy_regd = get_wiphy_regdom(wiphy); |
| 178 | if (!wiphy_regd) |
| 179 | goto out; |
| 180 | |
| 181 | if (wiphy_regd->dfs_region == regd->dfs_region) |
| 182 | goto out; |
| 183 | |
| 184 | REG_DBG_PRINT("%s: device specific dfs_region " |
| 185 | "(%s) disagrees with cfg80211's " |
| 186 | "central dfs_region (%s)\n", |
| 187 | dev_name(&wiphy->dev), |
| 188 | reg_dfs_region_str(wiphy_regd->dfs_region), |
| 189 | reg_dfs_region_str(regd->dfs_region)); |
| 190 | |
| 191 | out: |
| 192 | return regd->dfs_region; |
| 193 | } |
| 194 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 195 | static void rcu_free_regdom(const struct ieee80211_regdomain *r) |
| 196 | { |
| 197 | if (!r) |
| 198 | return; |
| 199 | kfree_rcu((struct ieee80211_regdomain *)r, rcu_head); |
| 200 | } |
| 201 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 202 | static struct regulatory_request *get_last_request(void) |
| 203 | { |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 204 | return rcu_dereference_rtnl(last_request); |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 205 | } |
| 206 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 207 | /* Used to queue up regulatory hints */ |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 208 | static LIST_HEAD(reg_requests_list); |
| 209 | static spinlock_t reg_requests_lock; |
| 210 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 211 | /* Used to queue up beacon hints for review */ |
| 212 | static LIST_HEAD(reg_pending_beacons); |
| 213 | static spinlock_t reg_pending_beacons_lock; |
| 214 | |
| 215 | /* Used to keep track of processed beacon hints */ |
| 216 | static LIST_HEAD(reg_beacon_list); |
| 217 | |
| 218 | struct reg_beacon { |
| 219 | struct list_head list; |
| 220 | struct ieee80211_channel chan; |
| 221 | }; |
| 222 | |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 223 | static void reg_check_chans_work(struct work_struct *work); |
| 224 | static DECLARE_DELAYED_WORK(reg_check_chans, reg_check_chans_work); |
| 225 | |
Luis R. Rodriguez | f333a7a | 2010-11-17 21:46:07 -0800 | [diff] [blame] | 226 | static void reg_todo(struct work_struct *work); |
| 227 | static DECLARE_WORK(reg_work, reg_todo); |
| 228 | |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 229 | static void reg_timeout_work(struct work_struct *work); |
| 230 | static DECLARE_DELAYED_WORK(reg_timeout, reg_timeout_work); |
| 231 | |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 232 | /* We keep a static world regulatory domain in case of the absence of CRDA */ |
| 233 | static const struct ieee80211_regdomain world_regdom = { |
Jason Abele | 28981e5 | 2015-02-17 16:10:41 -0800 | [diff] [blame] | 234 | .n_reg_rules = 8, |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 235 | .alpha2 = "00", |
| 236 | .reg_rules = { |
Luis R. Rodriguez | 68798a6 | 2009-02-21 00:20:37 -0500 | [diff] [blame] | 237 | /* IEEE 802.11b/g, channels 1..11 */ |
| 238 | REG_RULE(2412-10, 2462+10, 40, 6, 20, 0), |
Johannes Berg | 43c771a | 2012-11-12 10:51:34 +0100 | [diff] [blame] | 239 | /* IEEE 802.11b/g, channels 12..13. */ |
| 240 | REG_RULE(2467-10, 2472+10, 40, 6, 20, |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 241 | NL80211_RRF_NO_IR), |
Luis R. Rodriguez | 611b6a8 | 2009-03-05 21:19:21 -0800 | [diff] [blame] | 242 | /* IEEE 802.11 channel 14 - Only JP enables |
| 243 | * this and for 802.11b only */ |
| 244 | REG_RULE(2484-10, 2484+10, 20, 6, 20, |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 245 | NL80211_RRF_NO_IR | |
Luis R. Rodriguez | 611b6a8 | 2009-03-05 21:19:21 -0800 | [diff] [blame] | 246 | NL80211_RRF_NO_OFDM), |
| 247 | /* IEEE 802.11a, channel 36..48 */ |
Johannes Berg | 131a19b | 2013-03-04 20:54:46 +0100 | [diff] [blame] | 248 | REG_RULE(5180-10, 5240+10, 160, 6, 20, |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 249 | NL80211_RRF_NO_IR), |
Luis R. Rodriguez | 3fc71f7 | 2009-02-21 00:20:38 -0500 | [diff] [blame] | 250 | |
Johannes Berg | 131a19b | 2013-03-04 20:54:46 +0100 | [diff] [blame] | 251 | /* IEEE 802.11a, channel 52..64 - DFS required */ |
| 252 | REG_RULE(5260-10, 5320+10, 160, 6, 20, |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 253 | NL80211_RRF_NO_IR | |
Johannes Berg | 131a19b | 2013-03-04 20:54:46 +0100 | [diff] [blame] | 254 | NL80211_RRF_DFS), |
| 255 | |
| 256 | /* IEEE 802.11a, channel 100..144 - DFS required */ |
| 257 | REG_RULE(5500-10, 5720+10, 160, 6, 20, |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 258 | NL80211_RRF_NO_IR | |
Johannes Berg | 131a19b | 2013-03-04 20:54:46 +0100 | [diff] [blame] | 259 | NL80211_RRF_DFS), |
Luis R. Rodriguez | 3fc71f7 | 2009-02-21 00:20:38 -0500 | [diff] [blame] | 260 | |
| 261 | /* IEEE 802.11a, channel 149..165 */ |
Johannes Berg | 8ab9d85 | 2012-12-03 22:09:22 +0100 | [diff] [blame] | 262 | REG_RULE(5745-10, 5825+10, 80, 6, 20, |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 263 | NL80211_RRF_NO_IR), |
Vladimir Kondratiev | 90cdc6d | 2012-07-02 09:32:34 +0300 | [diff] [blame] | 264 | |
| 265 | /* IEEE 802.11ad (60gHz), channels 1..3 */ |
| 266 | 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] | 267 | } |
| 268 | }; |
| 269 | |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 270 | /* protected by RTNL */ |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 271 | static const struct ieee80211_regdomain *cfg80211_world_regdom = |
| 272 | &world_regdom; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 273 | |
Luis R. Rodriguez | 6ee7d33 | 2009-03-20 23:53:06 -0400 | [diff] [blame] | 274 | static char *ieee80211_regdom = "00"; |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 275 | static char user_alpha2[2]; |
Luis R. Rodriguez | 6ee7d33 | 2009-03-20 23:53:06 -0400 | [diff] [blame] | 276 | |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 277 | module_param(ieee80211_regdom, charp, 0444); |
| 278 | MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain code"); |
| 279 | |
Arik Nemtsov | c888393 | 2014-04-21 20:39:34 -0700 | [diff] [blame] | 280 | static void reg_free_request(struct regulatory_request *request) |
Luis R. Rodriguez | 5ad6ef5 | 2013-11-05 09:18:08 -0800 | [diff] [blame] | 281 | { |
Arik Nemtsov | c888393 | 2014-04-21 20:39:34 -0700 | [diff] [blame] | 282 | if (request != get_last_request()) |
| 283 | kfree(request); |
| 284 | } |
| 285 | |
| 286 | static void reg_free_last_request(void) |
| 287 | { |
| 288 | struct regulatory_request *lr = get_last_request(); |
| 289 | |
Luis R. Rodriguez | 5ad6ef5 | 2013-11-05 09:18:08 -0800 | [diff] [blame] | 290 | if (lr != &core_request_world && lr) |
| 291 | kfree_rcu(lr, rcu_head); |
| 292 | } |
| 293 | |
Luis R. Rodriguez | 05f1a3e | 2013-11-05 09:18:09 -0800 | [diff] [blame] | 294 | static void reg_update_last_request(struct regulatory_request *request) |
| 295 | { |
Luis R. Rodriguez | 255e25b | 2014-02-25 17:09:40 -0800 | [diff] [blame] | 296 | struct regulatory_request *lr; |
| 297 | |
| 298 | lr = get_last_request(); |
| 299 | if (lr == request) |
| 300 | return; |
| 301 | |
Arik Nemtsov | c888393 | 2014-04-21 20:39:34 -0700 | [diff] [blame] | 302 | reg_free_last_request(); |
Luis R. Rodriguez | 05f1a3e | 2013-11-05 09:18:09 -0800 | [diff] [blame] | 303 | rcu_assign_pointer(last_request, request); |
| 304 | } |
| 305 | |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 306 | static void reset_regdomains(bool full_reset, |
| 307 | const struct ieee80211_regdomain *new_regdom) |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 308 | { |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 309 | const struct ieee80211_regdomain *r; |
| 310 | |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 311 | ASSERT_RTNL(); |
Johannes Berg | e8da2bb | 2012-12-03 23:00:08 +0100 | [diff] [blame] | 312 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 313 | r = get_cfg80211_regdom(); |
| 314 | |
Johannes Berg | 942b25c | 2008-09-15 11:26:47 +0200 | [diff] [blame] | 315 | /* avoid freeing static information or freeing something twice */ |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 316 | if (r == cfg80211_world_regdom) |
| 317 | r = NULL; |
Johannes Berg | 942b25c | 2008-09-15 11:26:47 +0200 | [diff] [blame] | 318 | if (cfg80211_world_regdom == &world_regdom) |
| 319 | cfg80211_world_regdom = NULL; |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 320 | if (r == &world_regdom) |
| 321 | r = NULL; |
Johannes Berg | 942b25c | 2008-09-15 11:26:47 +0200 | [diff] [blame] | 322 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 323 | rcu_free_regdom(r); |
| 324 | rcu_free_regdom(cfg80211_world_regdom); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 325 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 326 | cfg80211_world_regdom = &world_regdom; |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 327 | rcu_assign_pointer(cfg80211_regdomain, new_regdom); |
Luis R. Rodriguez | a042994 | 2011-11-28 16:47:15 -0500 | [diff] [blame] | 328 | |
| 329 | if (!full_reset) |
| 330 | return; |
| 331 | |
Luis R. Rodriguez | 05f1a3e | 2013-11-05 09:18:09 -0800 | [diff] [blame] | 332 | reg_update_last_request(&core_request_world); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 333 | } |
| 334 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 335 | /* |
| 336 | * Dynamic world regulatory domain requested by the wireless |
| 337 | * core upon initialization |
| 338 | */ |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 339 | static void update_world_regdomain(const struct ieee80211_regdomain *rd) |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 340 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 341 | struct regulatory_request *lr; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 342 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 343 | lr = get_last_request(); |
| 344 | |
| 345 | WARN_ON(!lr); |
Johannes Berg | e8da2bb | 2012-12-03 23:00:08 +0100 | [diff] [blame] | 346 | |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 347 | reset_regdomains(false, rd); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 348 | |
| 349 | cfg80211_world_regdom = rd; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 350 | } |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 351 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 352 | bool is_world_regdom(const char *alpha2) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 353 | { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 354 | if (!alpha2) |
| 355 | return false; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 356 | return alpha2[0] == '0' && alpha2[1] == '0'; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 357 | } |
| 358 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 359 | static bool is_alpha2_set(const char *alpha2) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 360 | { |
| 361 | if (!alpha2) |
| 362 | return false; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 363 | return alpha2[0] && alpha2[1]; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 364 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 365 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 366 | static bool is_unknown_alpha2(const char *alpha2) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 367 | { |
| 368 | if (!alpha2) |
| 369 | return false; |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 370 | /* |
| 371 | * Special case where regulatory domain was built by driver |
| 372 | * but a specific alpha2 cannot be determined |
| 373 | */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 374 | return alpha2[0] == '9' && alpha2[1] == '9'; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 375 | } |
| 376 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 377 | static bool is_intersected_alpha2(const char *alpha2) |
| 378 | { |
| 379 | if (!alpha2) |
| 380 | return false; |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 381 | /* |
| 382 | * Special case where regulatory domain is the |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 383 | * result of an intersection between two regulatory domain |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 384 | * structures |
| 385 | */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 386 | return alpha2[0] == '9' && alpha2[1] == '8'; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 387 | } |
| 388 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 389 | static bool is_an_alpha2(const char *alpha2) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 390 | { |
| 391 | if (!alpha2) |
| 392 | return false; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 393 | return isalpha(alpha2[0]) && isalpha(alpha2[1]); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 394 | } |
| 395 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 396 | 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] | 397 | { |
| 398 | if (!alpha2_x || !alpha2_y) |
| 399 | return false; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 400 | 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] | 401 | } |
| 402 | |
Luis R. Rodriguez | 69b1572 | 2009-02-21 00:04:33 -0500 | [diff] [blame] | 403 | static bool regdom_changes(const char *alpha2) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 404 | { |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 405 | const struct ieee80211_regdomain *r = get_cfg80211_regdom(); |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 406 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 407 | if (!r) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 408 | return true; |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 409 | return !alpha2_equal(r->alpha2, alpha2); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 410 | } |
| 411 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 412 | /* |
| 413 | * The NL80211_REGDOM_SET_BY_USER regdom alpha2 is cached, this lets |
| 414 | * you know if a valid regulatory hint with NL80211_REGDOM_SET_BY_USER |
| 415 | * has ever been issued. |
| 416 | */ |
| 417 | static bool is_user_regdom_saved(void) |
| 418 | { |
| 419 | if (user_alpha2[0] == '9' && user_alpha2[1] == '7') |
| 420 | return false; |
| 421 | |
| 422 | /* This would indicate a mistake on the design */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 423 | 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] | 424 | "Unexpected user alpha2: %c%c\n", |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 425 | user_alpha2[0], user_alpha2[1])) |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 426 | return false; |
| 427 | |
| 428 | return true; |
| 429 | } |
| 430 | |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 431 | static const struct ieee80211_regdomain * |
| 432 | reg_copy_regd(const struct ieee80211_regdomain *src_regd) |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 433 | { |
| 434 | struct ieee80211_regdomain *regd; |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 435 | int size_of_regd; |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 436 | unsigned int i; |
| 437 | |
Johannes Berg | 82f2085 | 2012-12-04 12:49:16 +0100 | [diff] [blame] | 438 | size_of_regd = |
| 439 | sizeof(struct ieee80211_regdomain) + |
| 440 | src_regd->n_reg_rules * sizeof(struct ieee80211_reg_rule); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 441 | |
| 442 | regd = kzalloc(size_of_regd, GFP_KERNEL); |
| 443 | if (!regd) |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 444 | return ERR_PTR(-ENOMEM); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 445 | |
| 446 | memcpy(regd, src_regd, sizeof(struct ieee80211_regdomain)); |
| 447 | |
| 448 | for (i = 0; i < src_regd->n_reg_rules; i++) |
| 449 | memcpy(®d->reg_rules[i], &src_regd->reg_rules[i], |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 450 | sizeof(struct ieee80211_reg_rule)); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 451 | |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 452 | return regd; |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 453 | } |
| 454 | |
| 455 | #ifdef CONFIG_CFG80211_INTERNAL_REGDB |
| 456 | struct reg_regdb_search_request { |
| 457 | char alpha2[2]; |
| 458 | struct list_head list; |
| 459 | }; |
| 460 | |
| 461 | static LIST_HEAD(reg_regdb_search_list); |
John W. Linville | 368d06f | 2010-03-16 15:40:59 -0400 | [diff] [blame] | 462 | static DEFINE_MUTEX(reg_regdb_search_mutex); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 463 | |
| 464 | static void reg_regdb_search(struct work_struct *work) |
| 465 | { |
| 466 | struct reg_regdb_search_request *request; |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 467 | const struct ieee80211_regdomain *curdom, *regdom = NULL; |
| 468 | int i; |
Luis R. Rodriguez | a85d0d7 | 2012-09-14 15:36:57 -0700 | [diff] [blame] | 469 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 470 | rtnl_lock(); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 471 | |
John W. Linville | 368d06f | 2010-03-16 15:40:59 -0400 | [diff] [blame] | 472 | mutex_lock(®_regdb_search_mutex); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 473 | while (!list_empty(®_regdb_search_list)) { |
| 474 | request = list_first_entry(®_regdb_search_list, |
| 475 | struct reg_regdb_search_request, |
| 476 | list); |
| 477 | list_del(&request->list); |
| 478 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 479 | for (i = 0; i < reg_regdb_size; i++) { |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 480 | curdom = reg_regdb[i]; |
| 481 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 482 | if (alpha2_equal(request->alpha2, curdom->alpha2)) { |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 483 | regdom = reg_copy_regd(curdom); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 484 | break; |
| 485 | } |
| 486 | } |
| 487 | |
| 488 | kfree(request); |
| 489 | } |
John W. Linville | 368d06f | 2010-03-16 15:40:59 -0400 | [diff] [blame] | 490 | mutex_unlock(®_regdb_search_mutex); |
Luis R. Rodriguez | a85d0d7 | 2012-09-14 15:36:57 -0700 | [diff] [blame] | 491 | |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 492 | if (!IS_ERR_OR_NULL(regdom)) |
Ilan peer | c37722b | 2015-03-30 15:15:49 +0300 | [diff] [blame] | 493 | set_regdom(regdom, REGD_SOURCE_INTERNAL_DB); |
Luis R. Rodriguez | a85d0d7 | 2012-09-14 15:36:57 -0700 | [diff] [blame] | 494 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 495 | rtnl_unlock(); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 496 | } |
| 497 | |
| 498 | static DECLARE_WORK(reg_regdb_work, reg_regdb_search); |
| 499 | |
| 500 | static void reg_regdb_query(const char *alpha2) |
| 501 | { |
| 502 | struct reg_regdb_search_request *request; |
| 503 | |
| 504 | if (!alpha2) |
| 505 | return; |
| 506 | |
| 507 | request = kzalloc(sizeof(struct reg_regdb_search_request), GFP_KERNEL); |
| 508 | if (!request) |
| 509 | return; |
| 510 | |
| 511 | memcpy(request->alpha2, alpha2, 2); |
| 512 | |
John W. Linville | 368d06f | 2010-03-16 15:40:59 -0400 | [diff] [blame] | 513 | mutex_lock(®_regdb_search_mutex); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 514 | list_add_tail(&request->list, ®_regdb_search_list); |
John W. Linville | 368d06f | 2010-03-16 15:40:59 -0400 | [diff] [blame] | 515 | mutex_unlock(®_regdb_search_mutex); |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 516 | |
| 517 | schedule_work(®_regdb_work); |
| 518 | } |
Luis R. Rodriguez | 80007ef | 2012-03-23 07:23:31 -0700 | [diff] [blame] | 519 | |
| 520 | /* Feel free to add any other sanity checks here */ |
| 521 | static void reg_regdb_size_check(void) |
| 522 | { |
| 523 | /* We should ideally BUILD_BUG_ON() but then random builds would fail */ |
| 524 | WARN_ONCE(!reg_regdb_size, "db.txt is empty, you should update it..."); |
| 525 | } |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 526 | #else |
Luis R. Rodriguez | 80007ef | 2012-03-23 07:23:31 -0700 | [diff] [blame] | 527 | static inline void reg_regdb_size_check(void) {} |
John W. Linville | 3b377ea | 2009-12-18 17:59:01 -0500 | [diff] [blame] | 528 | static inline void reg_regdb_query(const char *alpha2) {} |
| 529 | #endif /* CONFIG_CFG80211_INTERNAL_REGDB */ |
| 530 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 531 | /* |
| 532 | * This lets us keep regulatory code which is updated on a regulatory |
Johannes Berg | 1226d25 | 2014-02-25 15:43:36 +0100 | [diff] [blame] | 533 | * basis in userspace. |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 534 | */ |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 535 | static int call_crda(const char *alpha2) |
| 536 | { |
Johannes Berg | 1226d25 | 2014-02-25 15:43:36 +0100 | [diff] [blame] | 537 | char country[12]; |
| 538 | char *env[] = { country, NULL }; |
| 539 | |
| 540 | snprintf(country, sizeof(country), "COUNTRY=%c%c", |
| 541 | alpha2[0], alpha2[1]); |
| 542 | |
Ilan peer | c37722b | 2015-03-30 15:15:49 +0300 | [diff] [blame] | 543 | /* query internal regulatory database (if it exists) */ |
| 544 | reg_regdb_query(alpha2); |
| 545 | |
| 546 | if (reg_crda_timeouts > REG_MAX_CRDA_TIMEOUTS) { |
Thomas Petazzoni | 042ab5f | 2015-07-09 15:35:15 +0200 | [diff] [blame] | 547 | pr_debug("Exceeded CRDA call max attempts. Not calling CRDA\n"); |
Ilan peer | c37722b | 2015-03-30 15:15:49 +0300 | [diff] [blame] | 548 | return -EINVAL; |
| 549 | } |
| 550 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 551 | if (!is_world_regdom((char *) alpha2)) |
Thomas Petazzoni | 042ab5f | 2015-07-09 15:35:15 +0200 | [diff] [blame] | 552 | pr_debug("Calling CRDA for country: %c%c\n", |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 553 | alpha2[0], alpha2[1]); |
| 554 | else |
Thomas Petazzoni | 042ab5f | 2015-07-09 15:35:15 +0200 | [diff] [blame] | 555 | pr_debug("Calling CRDA to update world regulatory domain\n"); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 556 | |
Johannes Berg | 1226d25 | 2014-02-25 15:43:36 +0100 | [diff] [blame] | 557 | return kobject_uevent_env(®_pdev->dev.kobj, KOBJ_CHANGE, env); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 558 | } |
| 559 | |
Luis R. Rodriguez | fe6631f | 2013-11-05 09:18:10 -0800 | [diff] [blame] | 560 | static enum reg_request_treatment |
| 561 | reg_call_crda(struct regulatory_request *request) |
| 562 | { |
| 563 | if (call_crda(request->alpha2)) |
| 564 | return REG_REQ_IGNORE; |
Ilan peer | eeca9fc | 2015-03-04 00:32:07 -0500 | [diff] [blame] | 565 | |
| 566 | queue_delayed_work(system_power_efficient_wq, |
| 567 | ®_timeout, msecs_to_jiffies(3142)); |
Luis R. Rodriguez | fe6631f | 2013-11-05 09:18:10 -0800 | [diff] [blame] | 568 | return REG_REQ_OK; |
| 569 | } |
| 570 | |
Luis R. Rodriguez | e438768 | 2013-11-05 09:18:01 -0800 | [diff] [blame] | 571 | bool reg_is_valid_request(const char *alpha2) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 572 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 573 | struct regulatory_request *lr = get_last_request(); |
Luis R. Rodriguez | 61405e9 | 2009-05-13 17:04:41 -0400 | [diff] [blame] | 574 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 575 | if (!lr || lr->processed) |
Johannes Berg | f6037d0 | 2008-10-21 11:01:33 +0200 | [diff] [blame] | 576 | return false; |
| 577 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 578 | return alpha2_equal(lr->alpha2, alpha2); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 579 | } |
| 580 | |
Janusz Dziedzic | e3961af | 2014-01-25 11:24:11 +0100 | [diff] [blame] | 581 | static const struct ieee80211_regdomain *reg_get_regdomain(struct wiphy *wiphy) |
| 582 | { |
| 583 | struct regulatory_request *lr = get_last_request(); |
| 584 | |
| 585 | /* |
| 586 | * Follow the driver's regulatory domain, if present, unless a country |
| 587 | * IE has been processed or a user wants to help complaince further |
| 588 | */ |
| 589 | if (lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE && |
| 590 | lr->initiator != NL80211_REGDOM_SET_BY_USER && |
| 591 | wiphy->regd) |
| 592 | return get_wiphy_regdom(wiphy); |
| 593 | |
| 594 | return get_cfg80211_regdom(); |
| 595 | } |
| 596 | |
Arik Nemtsov | a6d4a53 | 2014-10-23 09:37:33 +0300 | [diff] [blame] | 597 | static unsigned int |
| 598 | reg_get_max_bandwidth_from_range(const struct ieee80211_regdomain *rd, |
| 599 | const struct ieee80211_reg_rule *rule) |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 600 | { |
| 601 | const struct ieee80211_freq_range *freq_range = &rule->freq_range; |
| 602 | const struct ieee80211_freq_range *freq_range_tmp; |
| 603 | const struct ieee80211_reg_rule *tmp; |
| 604 | u32 start_freq, end_freq, idx, no; |
| 605 | |
| 606 | for (idx = 0; idx < rd->n_reg_rules; idx++) |
| 607 | if (rule == &rd->reg_rules[idx]) |
| 608 | break; |
| 609 | |
| 610 | if (idx == rd->n_reg_rules) |
| 611 | return 0; |
| 612 | |
| 613 | /* get start_freq */ |
| 614 | no = idx; |
| 615 | |
| 616 | while (no) { |
| 617 | tmp = &rd->reg_rules[--no]; |
| 618 | freq_range_tmp = &tmp->freq_range; |
| 619 | |
| 620 | if (freq_range_tmp->end_freq_khz < freq_range->start_freq_khz) |
| 621 | break; |
| 622 | |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 623 | freq_range = freq_range_tmp; |
| 624 | } |
| 625 | |
| 626 | start_freq = freq_range->start_freq_khz; |
| 627 | |
| 628 | /* get end_freq */ |
| 629 | freq_range = &rule->freq_range; |
| 630 | no = idx; |
| 631 | |
| 632 | while (no < rd->n_reg_rules - 1) { |
| 633 | tmp = &rd->reg_rules[++no]; |
| 634 | freq_range_tmp = &tmp->freq_range; |
| 635 | |
| 636 | if (freq_range_tmp->start_freq_khz > freq_range->end_freq_khz) |
| 637 | break; |
| 638 | |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 639 | freq_range = freq_range_tmp; |
| 640 | } |
| 641 | |
| 642 | end_freq = freq_range->end_freq_khz; |
| 643 | |
| 644 | return end_freq - start_freq; |
| 645 | } |
| 646 | |
Arik Nemtsov | a6d4a53 | 2014-10-23 09:37:33 +0300 | [diff] [blame] | 647 | unsigned int reg_get_max_bandwidth(const struct ieee80211_regdomain *rd, |
| 648 | const struct ieee80211_reg_rule *rule) |
| 649 | { |
| 650 | unsigned int bw = reg_get_max_bandwidth_from_range(rd, rule); |
| 651 | |
| 652 | if (rule->flags & NL80211_RRF_NO_160MHZ) |
| 653 | bw = min_t(unsigned int, bw, MHZ_TO_KHZ(80)); |
| 654 | if (rule->flags & NL80211_RRF_NO_80MHZ) |
| 655 | bw = min_t(unsigned int, bw, MHZ_TO_KHZ(40)); |
| 656 | |
| 657 | /* |
| 658 | * HT40+/HT40- limits are handled per-channel. Only limit BW if both |
| 659 | * are not allowed. |
| 660 | */ |
| 661 | if (rule->flags & NL80211_RRF_NO_HT40MINUS && |
| 662 | rule->flags & NL80211_RRF_NO_HT40PLUS) |
| 663 | bw = min_t(unsigned int, bw, MHZ_TO_KHZ(20)); |
| 664 | |
| 665 | return bw; |
| 666 | } |
| 667 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 668 | /* Sanity check on a regulatory rule */ |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 669 | 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] | 670 | { |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 671 | const struct ieee80211_freq_range *freq_range = &rule->freq_range; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 672 | u32 freq_diff; |
| 673 | |
Luis R. Rodriguez | 91e9900 | 2008-11-12 14:21:55 -0800 | [diff] [blame] | 674 | 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] | 675 | return false; |
| 676 | |
| 677 | if (freq_range->start_freq_khz > freq_range->end_freq_khz) |
| 678 | return false; |
| 679 | |
| 680 | freq_diff = freq_range->end_freq_khz - freq_range->start_freq_khz; |
| 681 | |
Roel Kluin | bd05f28 | 2009-03-03 22:55:21 +0100 | [diff] [blame] | 682 | if (freq_range->end_freq_khz <= freq_range->start_freq_khz || |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 683 | freq_range->max_bandwidth_khz > freq_diff) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 684 | return false; |
| 685 | |
| 686 | return true; |
| 687 | } |
| 688 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 689 | static bool is_valid_rd(const struct ieee80211_regdomain *rd) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 690 | { |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 691 | const struct ieee80211_reg_rule *reg_rule = NULL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 692 | unsigned int i; |
| 693 | |
| 694 | if (!rd->n_reg_rules) |
| 695 | return false; |
| 696 | |
Luis R. Rodriguez | 88dc1c3 | 2008-11-12 14:22:01 -0800 | [diff] [blame] | 697 | if (WARN_ON(rd->n_reg_rules > NL80211_MAX_SUPP_REG_RULES)) |
| 698 | return false; |
| 699 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 700 | for (i = 0; i < rd->n_reg_rules; i++) { |
| 701 | reg_rule = &rd->reg_rules[i]; |
| 702 | if (!is_valid_reg_rule(reg_rule)) |
| 703 | return false; |
| 704 | } |
| 705 | |
| 706 | return true; |
| 707 | } |
| 708 | |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 709 | 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] | 710 | u32 center_freq_khz, u32 bw_khz) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 711 | { |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 712 | u32 start_freq_khz, end_freq_khz; |
| 713 | |
| 714 | start_freq_khz = center_freq_khz - (bw_khz/2); |
| 715 | end_freq_khz = center_freq_khz + (bw_khz/2); |
| 716 | |
| 717 | if (start_freq_khz >= freq_range->start_freq_khz && |
| 718 | end_freq_khz <= freq_range->end_freq_khz) |
| 719 | return true; |
| 720 | |
| 721 | return false; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 722 | } |
| 723 | |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 724 | /** |
| 725 | * freq_in_rule_band - tells us if a frequency is in a frequency band |
| 726 | * @freq_range: frequency rule we want to query |
| 727 | * @freq_khz: frequency we are inquiring about |
| 728 | * |
| 729 | * This lets us know if a specific frequency rule is or is not relevant to |
| 730 | * a specific frequency's band. Bands are device specific and artificial |
Vladimir Kondratiev | 64629b9 | 2012-09-23 09:49:54 +0200 | [diff] [blame] | 731 | * definitions (the "2.4 GHz band", the "5 GHz band" and the "60GHz band"), |
| 732 | * however it is safe for now to assume that a frequency rule should not be |
| 733 | * part of a frequency's band if the start freq or end freq are off by more |
| 734 | * than 2 GHz for the 2.4 and 5 GHz bands, and by more than 10 GHz for the |
| 735 | * 60 GHz band. |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 736 | * This resolution can be lowered and should be considered as we add |
| 737 | * regulatory rule support for other "bands". |
| 738 | **/ |
| 739 | 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] | 740 | u32 freq_khz) |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 741 | { |
| 742 | #define ONE_GHZ_IN_KHZ 1000000 |
Vladimir Kondratiev | 64629b9 | 2012-09-23 09:49:54 +0200 | [diff] [blame] | 743 | /* |
| 744 | * From 802.11ad: directional multi-gigabit (DMG): |
| 745 | * Pertaining to operation in a frequency band containing a channel |
| 746 | * with the Channel starting frequency above 45 GHz. |
| 747 | */ |
| 748 | u32 limit = freq_khz > 45 * ONE_GHZ_IN_KHZ ? |
| 749 | 10 * ONE_GHZ_IN_KHZ : 2 * ONE_GHZ_IN_KHZ; |
| 750 | if (abs(freq_khz - freq_range->start_freq_khz) <= limit) |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 751 | return true; |
Vladimir Kondratiev | 64629b9 | 2012-09-23 09:49:54 +0200 | [diff] [blame] | 752 | if (abs(freq_khz - freq_range->end_freq_khz) <= limit) |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 753 | return true; |
| 754 | return false; |
| 755 | #undef ONE_GHZ_IN_KHZ |
| 756 | } |
| 757 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 758 | /* |
Luis R. Rodriguez | adbfb05 | 2013-11-13 18:54:03 +0100 | [diff] [blame] | 759 | * Later on we can perhaps use the more restrictive DFS |
| 760 | * region but we don't have information for that yet so |
| 761 | * for now simply disallow conflicts. |
| 762 | */ |
| 763 | static enum nl80211_dfs_regions |
| 764 | reg_intersect_dfs_region(const enum nl80211_dfs_regions dfs_region1, |
| 765 | const enum nl80211_dfs_regions dfs_region2) |
| 766 | { |
| 767 | if (dfs_region1 != dfs_region2) |
| 768 | return NL80211_DFS_UNSET; |
| 769 | return dfs_region1; |
| 770 | } |
| 771 | |
| 772 | /* |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 773 | * Helper for regdom_intersect(), this does the real |
| 774 | * mathematical intersection fun |
| 775 | */ |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 776 | static int reg_rules_intersect(const struct ieee80211_regdomain *rd1, |
| 777 | const struct ieee80211_regdomain *rd2, |
| 778 | const struct ieee80211_reg_rule *rule1, |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 779 | const struct ieee80211_reg_rule *rule2, |
| 780 | struct ieee80211_reg_rule *intersected_rule) |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 781 | { |
| 782 | const struct ieee80211_freq_range *freq_range1, *freq_range2; |
| 783 | struct ieee80211_freq_range *freq_range; |
| 784 | const struct ieee80211_power_rule *power_rule1, *power_rule2; |
| 785 | struct ieee80211_power_rule *power_rule; |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 786 | u32 freq_diff, max_bandwidth1, max_bandwidth2; |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 787 | |
| 788 | freq_range1 = &rule1->freq_range; |
| 789 | freq_range2 = &rule2->freq_range; |
| 790 | freq_range = &intersected_rule->freq_range; |
| 791 | |
| 792 | power_rule1 = &rule1->power_rule; |
| 793 | power_rule2 = &rule2->power_rule; |
| 794 | power_rule = &intersected_rule->power_rule; |
| 795 | |
| 796 | freq_range->start_freq_khz = max(freq_range1->start_freq_khz, |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 797 | freq_range2->start_freq_khz); |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 798 | freq_range->end_freq_khz = min(freq_range1->end_freq_khz, |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 799 | freq_range2->end_freq_khz); |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 800 | |
| 801 | max_bandwidth1 = freq_range1->max_bandwidth_khz; |
| 802 | max_bandwidth2 = freq_range2->max_bandwidth_khz; |
| 803 | |
Janusz Dziedzic | b0dfd2e | 2014-02-20 13:52:16 +0100 | [diff] [blame] | 804 | if (rule1->flags & NL80211_RRF_AUTO_BW) |
| 805 | max_bandwidth1 = reg_get_max_bandwidth(rd1, rule1); |
| 806 | if (rule2->flags & NL80211_RRF_AUTO_BW) |
| 807 | max_bandwidth2 = reg_get_max_bandwidth(rd2, rule2); |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 808 | |
| 809 | freq_range->max_bandwidth_khz = min(max_bandwidth1, max_bandwidth2); |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 810 | |
Janusz Dziedzic | b0dfd2e | 2014-02-20 13:52:16 +0100 | [diff] [blame] | 811 | intersected_rule->flags = rule1->flags | rule2->flags; |
| 812 | |
| 813 | /* |
| 814 | * In case NL80211_RRF_AUTO_BW requested for both rules |
| 815 | * set AUTO_BW in intersected rule also. Next we will |
| 816 | * calculate BW correctly in handle_channel function. |
| 817 | * In other case remove AUTO_BW flag while we calculate |
| 818 | * maximum bandwidth correctly and auto calculation is |
| 819 | * not required. |
| 820 | */ |
| 821 | if ((rule1->flags & NL80211_RRF_AUTO_BW) && |
| 822 | (rule2->flags & NL80211_RRF_AUTO_BW)) |
| 823 | intersected_rule->flags |= NL80211_RRF_AUTO_BW; |
| 824 | else |
| 825 | intersected_rule->flags &= ~NL80211_RRF_AUTO_BW; |
| 826 | |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 827 | freq_diff = freq_range->end_freq_khz - freq_range->start_freq_khz; |
| 828 | if (freq_range->max_bandwidth_khz > freq_diff) |
| 829 | freq_range->max_bandwidth_khz = freq_diff; |
| 830 | |
| 831 | power_rule->max_eirp = min(power_rule1->max_eirp, |
| 832 | power_rule2->max_eirp); |
| 833 | power_rule->max_antenna_gain = min(power_rule1->max_antenna_gain, |
| 834 | power_rule2->max_antenna_gain); |
| 835 | |
Janusz Dziedzic | 089027e | 2014-02-21 19:46:12 +0100 | [diff] [blame] | 836 | intersected_rule->dfs_cac_ms = max(rule1->dfs_cac_ms, |
| 837 | rule2->dfs_cac_ms); |
| 838 | |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 839 | if (!is_valid_reg_rule(intersected_rule)) |
| 840 | return -EINVAL; |
| 841 | |
| 842 | return 0; |
| 843 | } |
| 844 | |
Eliad Peller | a62a1ae | 2014-09-03 15:25:03 +0300 | [diff] [blame] | 845 | /* check whether old rule contains new rule */ |
| 846 | static bool rule_contains(struct ieee80211_reg_rule *r1, |
| 847 | struct ieee80211_reg_rule *r2) |
| 848 | { |
| 849 | /* for simplicity, currently consider only same flags */ |
| 850 | if (r1->flags != r2->flags) |
| 851 | return false; |
| 852 | |
| 853 | /* verify r1 is more restrictive */ |
| 854 | if ((r1->power_rule.max_antenna_gain > |
| 855 | r2->power_rule.max_antenna_gain) || |
| 856 | r1->power_rule.max_eirp > r2->power_rule.max_eirp) |
| 857 | return false; |
| 858 | |
| 859 | /* make sure r2's range is contained within r1 */ |
| 860 | if (r1->freq_range.start_freq_khz > r2->freq_range.start_freq_khz || |
| 861 | r1->freq_range.end_freq_khz < r2->freq_range.end_freq_khz) |
| 862 | return false; |
| 863 | |
| 864 | /* and finally verify that r1.max_bw >= r2.max_bw */ |
| 865 | if (r1->freq_range.max_bandwidth_khz < |
| 866 | r2->freq_range.max_bandwidth_khz) |
| 867 | return false; |
| 868 | |
| 869 | return true; |
| 870 | } |
| 871 | |
| 872 | /* add or extend current rules. do nothing if rule is already contained */ |
| 873 | static void add_rule(struct ieee80211_reg_rule *rule, |
| 874 | struct ieee80211_reg_rule *reg_rules, u32 *n_rules) |
| 875 | { |
| 876 | struct ieee80211_reg_rule *tmp_rule; |
| 877 | int i; |
| 878 | |
| 879 | for (i = 0; i < *n_rules; i++) { |
| 880 | tmp_rule = ®_rules[i]; |
| 881 | /* rule is already contained - do nothing */ |
| 882 | if (rule_contains(tmp_rule, rule)) |
| 883 | return; |
| 884 | |
| 885 | /* extend rule if possible */ |
| 886 | if (rule_contains(rule, tmp_rule)) { |
| 887 | memcpy(tmp_rule, rule, sizeof(*rule)); |
| 888 | return; |
| 889 | } |
| 890 | } |
| 891 | |
| 892 | memcpy(®_rules[*n_rules], rule, sizeof(*rule)); |
| 893 | (*n_rules)++; |
| 894 | } |
| 895 | |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 896 | /** |
| 897 | * regdom_intersect - do the intersection between two regulatory domains |
| 898 | * @rd1: first regulatory domain |
| 899 | * @rd2: second regulatory domain |
| 900 | * |
| 901 | * Use this function to get the intersection between two regulatory domains. |
| 902 | * Once completed we will mark the alpha2 for the rd as intersected, "98", |
| 903 | * as no one single alpha2 can represent this regulatory domain. |
| 904 | * |
| 905 | * Returns a pointer to the regulatory domain structure which will hold the |
| 906 | * resulting intersection of rules between rd1 and rd2. We will |
| 907 | * kzalloc() this structure for you. |
| 908 | */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 909 | static struct ieee80211_regdomain * |
| 910 | regdom_intersect(const struct ieee80211_regdomain *rd1, |
| 911 | const struct ieee80211_regdomain *rd2) |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 912 | { |
| 913 | int r, size_of_regd; |
| 914 | unsigned int x, y; |
Eliad Peller | a62a1ae | 2014-09-03 15:25:03 +0300 | [diff] [blame] | 915 | unsigned int num_rules = 0; |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 916 | const struct ieee80211_reg_rule *rule1, *rule2; |
Eliad Peller | a62a1ae | 2014-09-03 15:25:03 +0300 | [diff] [blame] | 917 | struct ieee80211_reg_rule intersected_rule; |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 918 | struct ieee80211_regdomain *rd; |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 919 | |
| 920 | if (!rd1 || !rd2) |
| 921 | return NULL; |
| 922 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 923 | /* |
| 924 | * 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] | 925 | * build them. This is to so we can malloc() and free() a |
| 926 | * regdomain once. The reason we use reg_rules_intersect() here |
| 927 | * 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] | 928 | * All rules that do check out OK are valid. |
| 929 | */ |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 930 | |
| 931 | for (x = 0; x < rd1->n_reg_rules; x++) { |
| 932 | rule1 = &rd1->reg_rules[x]; |
| 933 | for (y = 0; y < rd2->n_reg_rules; y++) { |
| 934 | rule2 = &rd2->reg_rules[y]; |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 935 | if (!reg_rules_intersect(rd1, rd2, rule1, rule2, |
Eliad Peller | a62a1ae | 2014-09-03 15:25:03 +0300 | [diff] [blame] | 936 | &intersected_rule)) |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 937 | num_rules++; |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 938 | } |
| 939 | } |
| 940 | |
| 941 | if (!num_rules) |
| 942 | return NULL; |
| 943 | |
| 944 | size_of_regd = sizeof(struct ieee80211_regdomain) + |
Johannes Berg | 82f2085 | 2012-12-04 12:49:16 +0100 | [diff] [blame] | 945 | num_rules * sizeof(struct ieee80211_reg_rule); |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 946 | |
| 947 | rd = kzalloc(size_of_regd, GFP_KERNEL); |
| 948 | if (!rd) |
| 949 | return NULL; |
| 950 | |
Eliad Peller | a62a1ae | 2014-09-03 15:25:03 +0300 | [diff] [blame] | 951 | for (x = 0; x < rd1->n_reg_rules; x++) { |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 952 | rule1 = &rd1->reg_rules[x]; |
Eliad Peller | a62a1ae | 2014-09-03 15:25:03 +0300 | [diff] [blame] | 953 | for (y = 0; y < rd2->n_reg_rules; y++) { |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 954 | rule2 = &rd2->reg_rules[y]; |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 955 | r = reg_rules_intersect(rd1, rd2, rule1, rule2, |
Eliad Peller | a62a1ae | 2014-09-03 15:25:03 +0300 | [diff] [blame] | 956 | &intersected_rule); |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 957 | /* |
| 958 | * No need to memset here the intersected rule here as |
| 959 | * we're not using the stack anymore |
| 960 | */ |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 961 | if (r) |
| 962 | continue; |
Eliad Peller | a62a1ae | 2014-09-03 15:25:03 +0300 | [diff] [blame] | 963 | |
| 964 | add_rule(&intersected_rule, rd->reg_rules, |
| 965 | &rd->n_reg_rules); |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 966 | } |
| 967 | } |
| 968 | |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 969 | rd->alpha2[0] = '9'; |
| 970 | rd->alpha2[1] = '8'; |
Luis R. Rodriguez | adbfb05 | 2013-11-13 18:54:03 +0100 | [diff] [blame] | 971 | rd->dfs_region = reg_intersect_dfs_region(rd1->dfs_region, |
| 972 | rd2->dfs_region); |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 973 | |
| 974 | return rd; |
| 975 | } |
| 976 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 977 | /* |
| 978 | * XXX: add support for the rest of enum nl80211_reg_rule_flags, we may |
| 979 | * want to just have the channel structure use these |
| 980 | */ |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 981 | static u32 map_regdom_flags(u32 rd_flags) |
| 982 | { |
| 983 | u32 channel_flags = 0; |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 984 | if (rd_flags & NL80211_RRF_NO_IR_ALL) |
| 985 | channel_flags |= IEEE80211_CHAN_NO_IR; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 986 | if (rd_flags & NL80211_RRF_DFS) |
| 987 | channel_flags |= IEEE80211_CHAN_RADAR; |
Seth Forshee | 03f6b08 | 2012-08-01 15:58:42 -0500 | [diff] [blame] | 988 | if (rd_flags & NL80211_RRF_NO_OFDM) |
| 989 | channel_flags |= IEEE80211_CHAN_NO_OFDM; |
David Spinadel | 570dbde | 2014-02-23 09:12:59 +0200 | [diff] [blame] | 990 | if (rd_flags & NL80211_RRF_NO_OUTDOOR) |
| 991 | channel_flags |= IEEE80211_CHAN_INDOOR_ONLY; |
Arik Nemtsov | 06f207f | 2015-05-06 16:28:31 +0300 | [diff] [blame] | 992 | if (rd_flags & NL80211_RRF_IR_CONCURRENT) |
| 993 | channel_flags |= IEEE80211_CHAN_IR_CONCURRENT; |
Arik Nemtsov | a6d4a53 | 2014-10-23 09:37:33 +0300 | [diff] [blame] | 994 | if (rd_flags & NL80211_RRF_NO_HT40MINUS) |
| 995 | channel_flags |= IEEE80211_CHAN_NO_HT40MINUS; |
| 996 | if (rd_flags & NL80211_RRF_NO_HT40PLUS) |
| 997 | channel_flags |= IEEE80211_CHAN_NO_HT40PLUS; |
| 998 | if (rd_flags & NL80211_RRF_NO_80MHZ) |
| 999 | channel_flags |= IEEE80211_CHAN_NO_80MHZ; |
| 1000 | if (rd_flags & NL80211_RRF_NO_160MHZ) |
| 1001 | channel_flags |= IEEE80211_CHAN_NO_160MHZ; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1002 | return channel_flags; |
| 1003 | } |
| 1004 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 1005 | static const struct ieee80211_reg_rule * |
| 1006 | freq_reg_info_regd(struct wiphy *wiphy, u32 center_freq, |
| 1007 | const struct ieee80211_regdomain *regd) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1008 | { |
| 1009 | int i; |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 1010 | bool band_rule_found = false; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1011 | bool bw_fits = false; |
| 1012 | |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 1013 | if (!regd) |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 1014 | return ERR_PTR(-EINVAL); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1015 | |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 1016 | for (i = 0; i < regd->n_reg_rules; i++) { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1017 | const struct ieee80211_reg_rule *rr; |
| 1018 | const struct ieee80211_freq_range *fr = NULL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1019 | |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 1020 | rr = ®d->reg_rules[i]; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1021 | fr = &rr->freq_range; |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 1022 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 1023 | /* |
| 1024 | * We only need to know if one frequency rule was |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 1025 | * was in center_freq's band, that's enough, so lets |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 1026 | * not overwrite it once found |
| 1027 | */ |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 1028 | if (!band_rule_found) |
| 1029 | band_rule_found = freq_in_rule_band(fr, center_freq); |
| 1030 | |
Johannes Berg | e33e224 | 2014-06-23 11:06:16 +0200 | [diff] [blame] | 1031 | 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] | 1032 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 1033 | if (band_rule_found && bw_fits) |
| 1034 | return rr; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1035 | } |
| 1036 | |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 1037 | if (!band_rule_found) |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 1038 | return ERR_PTR(-ERANGE); |
Luis R. Rodriguez | 0c7dc45 | 2009-01-07 17:43:36 -0800 | [diff] [blame] | 1039 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 1040 | return ERR_PTR(-EINVAL); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1041 | } |
| 1042 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 1043 | const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy, |
| 1044 | u32 center_freq) |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1045 | { |
Johannes Berg | 5d885b9 | 2012-12-04 00:14:17 +0100 | [diff] [blame] | 1046 | const struct ieee80211_regdomain *regd; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1047 | |
Janusz Dziedzic | e3961af | 2014-01-25 11:24:11 +0100 | [diff] [blame] | 1048 | regd = reg_get_regdomain(wiphy); |
Johannes Berg | 5d885b9 | 2012-12-04 00:14:17 +0100 | [diff] [blame] | 1049 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 1050 | return freq_reg_info_regd(wiphy, center_freq, regd); |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1051 | } |
John W. Linville | 4f366c5 | 2010-07-15 14:57:33 -0400 | [diff] [blame] | 1052 | EXPORT_SYMBOL(freq_reg_info); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1053 | |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 1054 | const char *reg_initiator_name(enum nl80211_reg_initiator initiator) |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1055 | { |
| 1056 | switch (initiator) { |
| 1057 | case NL80211_REGDOM_SET_BY_CORE: |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 1058 | return "core"; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1059 | case NL80211_REGDOM_SET_BY_USER: |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 1060 | return "user"; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1061 | case NL80211_REGDOM_SET_BY_DRIVER: |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 1062 | return "driver"; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1063 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 1064 | return "country IE"; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1065 | default: |
| 1066 | WARN_ON(1); |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 1067 | return "bug"; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1068 | } |
| 1069 | } |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 1070 | EXPORT_SYMBOL(reg_initiator_name); |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 1071 | |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 1072 | #ifdef CONFIG_CFG80211_REG_DEBUG |
Janusz Dziedzic | b0dfd2e | 2014-02-20 13:52:16 +0100 | [diff] [blame] | 1073 | static void chan_reg_rule_print_dbg(const struct ieee80211_regdomain *regd, |
| 1074 | struct ieee80211_channel *chan, |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 1075 | const struct ieee80211_reg_rule *reg_rule) |
| 1076 | { |
| 1077 | const struct ieee80211_power_rule *power_rule; |
| 1078 | const struct ieee80211_freq_range *freq_range; |
Janusz Dziedzic | b0dfd2e | 2014-02-20 13:52:16 +0100 | [diff] [blame] | 1079 | char max_antenna_gain[32], bw[32]; |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 1080 | |
| 1081 | power_rule = ®_rule->power_rule; |
| 1082 | freq_range = ®_rule->freq_range; |
| 1083 | |
| 1084 | if (!power_rule->max_antenna_gain) |
Janusz Dziedzic | b0dfd2e | 2014-02-20 13:52:16 +0100 | [diff] [blame] | 1085 | snprintf(max_antenna_gain, sizeof(max_antenna_gain), "N/A"); |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 1086 | else |
Janusz Dziedzic | b0dfd2e | 2014-02-20 13:52:16 +0100 | [diff] [blame] | 1087 | snprintf(max_antenna_gain, sizeof(max_antenna_gain), "%d", |
| 1088 | power_rule->max_antenna_gain); |
| 1089 | |
| 1090 | if (reg_rule->flags & NL80211_RRF_AUTO_BW) |
| 1091 | snprintf(bw, sizeof(bw), "%d KHz, %d KHz AUTO", |
| 1092 | freq_range->max_bandwidth_khz, |
| 1093 | reg_get_max_bandwidth(regd, reg_rule)); |
| 1094 | else |
| 1095 | snprintf(bw, sizeof(bw), "%d KHz", |
| 1096 | freq_range->max_bandwidth_khz); |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 1097 | |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 1098 | REG_DBG_PRINT("Updating information on frequency %d MHz with regulatory rule:\n", |
| 1099 | chan->center_freq); |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 1100 | |
Janusz Dziedzic | b0dfd2e | 2014-02-20 13:52:16 +0100 | [diff] [blame] | 1101 | REG_DBG_PRINT("%d KHz - %d KHz @ %s), (%s mBi, %d mBm)\n", |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1102 | freq_range->start_freq_khz, freq_range->end_freq_khz, |
Janusz Dziedzic | b0dfd2e | 2014-02-20 13:52:16 +0100 | [diff] [blame] | 1103 | bw, max_antenna_gain, |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 1104 | power_rule->max_eirp); |
| 1105 | } |
| 1106 | #else |
Janusz Dziedzic | b0dfd2e | 2014-02-20 13:52:16 +0100 | [diff] [blame] | 1107 | static void chan_reg_rule_print_dbg(const struct ieee80211_regdomain *regd, |
| 1108 | struct ieee80211_channel *chan, |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 1109 | const struct ieee80211_reg_rule *reg_rule) |
| 1110 | { |
| 1111 | return; |
| 1112 | } |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1113 | #endif |
| 1114 | |
Johannes Berg | e33e224 | 2014-06-23 11:06:16 +0200 | [diff] [blame] | 1115 | /* |
| 1116 | * Note that right now we assume the desired channel bandwidth |
| 1117 | * is always 20 MHz for each individual channel (HT40 uses 20 MHz |
| 1118 | * per channel, the primary and the extension channel). |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1119 | */ |
Luis R. Rodriguez | 7ca43d0 | 2010-10-20 10:18:53 -0700 | [diff] [blame] | 1120 | static void handle_channel(struct wiphy *wiphy, |
| 1121 | enum nl80211_reg_initiator initiator, |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1122 | struct ieee80211_channel *chan) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1123 | { |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1124 | u32 flags, bw_flags = 0; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1125 | const struct ieee80211_reg_rule *reg_rule = NULL; |
| 1126 | const struct ieee80211_power_rule *power_rule = NULL; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1127 | const struct ieee80211_freq_range *freq_range = NULL; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 1128 | struct wiphy *request_wiphy = NULL; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1129 | struct regulatory_request *lr = get_last_request(); |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 1130 | const struct ieee80211_regdomain *regd; |
| 1131 | u32 max_bandwidth_khz; |
Luis R. Rodriguez | a92a3ce | 2009-01-07 17:43:33 -0800 | [diff] [blame] | 1132 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1133 | request_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx); |
Luis R. Rodriguez | a92a3ce | 2009-01-07 17:43:33 -0800 | [diff] [blame] | 1134 | |
| 1135 | flags = chan->orig_flags; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1136 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 1137 | reg_rule = freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq)); |
| 1138 | if (IS_ERR(reg_rule)) { |
Luis R. Rodriguez | ca4ffe8 | 2010-10-20 10:18:55 -0700 | [diff] [blame] | 1139 | /* |
| 1140 | * We will disable all channels that do not match our |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 1141 | * received regulatory rule unless the hint is coming |
Luis R. Rodriguez | ca4ffe8 | 2010-10-20 10:18:55 -0700 | [diff] [blame] | 1142 | * from a Country IE and the Country IE had no information |
| 1143 | * about a band. The IEEE 802.11 spec allows for an AP |
| 1144 | * to send only a subset of the regulatory rules allowed, |
| 1145 | * so an AP in the US that only supports 2.4 GHz may only send |
| 1146 | * a country IE with information for the 2.4 GHz band |
| 1147 | * while 5 GHz is still supported. |
| 1148 | */ |
| 1149 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 1150 | PTR_ERR(reg_rule) == -ERANGE) |
Luis R. Rodriguez | ca4ffe8 | 2010-10-20 10:18:55 -0700 | [diff] [blame] | 1151 | return; |
| 1152 | |
Luis R. Rodriguez | cc493e4f | 2013-11-06 17:54:44 +0100 | [diff] [blame] | 1153 | if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER && |
| 1154 | request_wiphy && request_wiphy == wiphy && |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1155 | request_wiphy->regulatory_flags & REGULATORY_STRICT_REG) { |
Luis R. Rodriguez | cc493e4f | 2013-11-06 17:54:44 +0100 | [diff] [blame] | 1156 | REG_DBG_PRINT("Disabling freq %d MHz for good\n", |
| 1157 | chan->center_freq); |
| 1158 | chan->orig_flags |= IEEE80211_CHAN_DISABLED; |
| 1159 | chan->flags = chan->orig_flags; |
| 1160 | } else { |
| 1161 | REG_DBG_PRINT("Disabling freq %d MHz\n", |
| 1162 | chan->center_freq); |
| 1163 | chan->flags |= IEEE80211_CHAN_DISABLED; |
| 1164 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1165 | return; |
Luis R. Rodriguez | ca4ffe8 | 2010-10-20 10:18:55 -0700 | [diff] [blame] | 1166 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1167 | |
Janusz Dziedzic | b0dfd2e | 2014-02-20 13:52:16 +0100 | [diff] [blame] | 1168 | regd = reg_get_regdomain(wiphy); |
| 1169 | chan_reg_rule_print_dbg(regd, chan, reg_rule); |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 1170 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1171 | power_rule = ®_rule->power_rule; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1172 | freq_range = ®_rule->freq_range; |
| 1173 | |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 1174 | max_bandwidth_khz = freq_range->max_bandwidth_khz; |
| 1175 | /* Check if auto calculation requested */ |
Janusz Dziedzic | b0dfd2e | 2014-02-20 13:52:16 +0100 | [diff] [blame] | 1176 | if (reg_rule->flags & NL80211_RRF_AUTO_BW) |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 1177 | max_bandwidth_khz = reg_get_max_bandwidth(regd, reg_rule); |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 1178 | |
| 1179 | if (max_bandwidth_khz < MHZ_TO_KHZ(40)) |
Johannes Berg | e33e224 | 2014-06-23 11:06:16 +0200 | [diff] [blame] | 1180 | bw_flags = IEEE80211_CHAN_NO_HT40; |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 1181 | if (max_bandwidth_khz < MHZ_TO_KHZ(80)) |
Johannes Berg | c7a6ee2 | 2012-12-12 17:50:39 +0100 | [diff] [blame] | 1182 | bw_flags |= IEEE80211_CHAN_NO_80MHZ; |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 1183 | if (max_bandwidth_khz < MHZ_TO_KHZ(160)) |
Johannes Berg | c7a6ee2 | 2012-12-12 17:50:39 +0100 | [diff] [blame] | 1184 | bw_flags |= IEEE80211_CHAN_NO_160MHZ; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1185 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1186 | if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER && |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 1187 | request_wiphy && request_wiphy == wiphy && |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1188 | request_wiphy->regulatory_flags & REGULATORY_STRICT_REG) { |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 1189 | /* |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 1190 | * This guarantees the driver's requested regulatory domain |
Luis R. Rodriguez | f976376 | 2009-01-22 15:05:52 -0800 | [diff] [blame] | 1191 | * will always be used as a base for further regulatory |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 1192 | * settings |
| 1193 | */ |
Luis R. Rodriguez | f976376 | 2009-01-22 15:05:52 -0800 | [diff] [blame] | 1194 | chan->flags = chan->orig_flags = |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1195 | map_regdom_flags(reg_rule->flags) | bw_flags; |
Luis R. Rodriguez | f976376 | 2009-01-22 15:05:52 -0800 | [diff] [blame] | 1196 | chan->max_antenna_gain = chan->orig_mag = |
| 1197 | (int) MBI_TO_DBI(power_rule->max_antenna_gain); |
Felix Fietkau | 279f0f5 | 2012-10-17 13:56:20 +0200 | [diff] [blame] | 1198 | chan->max_reg_power = chan->max_power = chan->orig_mpwr = |
Luis R. Rodriguez | f976376 | 2009-01-22 15:05:52 -0800 | [diff] [blame] | 1199 | (int) MBM_TO_DBM(power_rule->max_eirp); |
Janusz Dziedzic | 4f267c1 | 2014-04-09 13:47:12 +0200 | [diff] [blame] | 1200 | |
| 1201 | if (chan->flags & IEEE80211_CHAN_RADAR) { |
| 1202 | chan->dfs_cac_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; |
| 1203 | if (reg_rule->dfs_cac_ms) |
| 1204 | chan->dfs_cac_ms = reg_rule->dfs_cac_ms; |
| 1205 | } |
| 1206 | |
Luis R. Rodriguez | f976376 | 2009-01-22 15:05:52 -0800 | [diff] [blame] | 1207 | return; |
| 1208 | } |
| 1209 | |
Simon Wunderlich | 04f3904 | 2013-02-08 18:16:19 +0100 | [diff] [blame] | 1210 | chan->dfs_state = NL80211_DFS_USABLE; |
| 1211 | chan->dfs_state_entered = jiffies; |
| 1212 | |
Rajkumar Manoharan | aa3d7ee | 2011-09-14 14:28:17 +0530 | [diff] [blame] | 1213 | chan->beacon_found = false; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1214 | chan->flags = flags | bw_flags | map_regdom_flags(reg_rule->flags); |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1215 | chan->max_antenna_gain = |
| 1216 | min_t(int, chan->orig_mag, |
| 1217 | MBI_TO_DBI(power_rule->max_antenna_gain)); |
Hong Wu | eccc068 | 2012-01-11 20:33:39 +0200 | [diff] [blame] | 1218 | chan->max_reg_power = (int) MBM_TO_DBM(power_rule->max_eirp); |
Janusz Dziedzic | 089027e | 2014-02-21 19:46:12 +0100 | [diff] [blame] | 1219 | |
| 1220 | if (chan->flags & IEEE80211_CHAN_RADAR) { |
| 1221 | if (reg_rule->dfs_cac_ms) |
| 1222 | chan->dfs_cac_ms = reg_rule->dfs_cac_ms; |
| 1223 | else |
| 1224 | chan->dfs_cac_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; |
| 1225 | } |
| 1226 | |
Stanislaw Gruszka | 5e31fc0 | 2012-07-24 08:35:39 +0200 | [diff] [blame] | 1227 | if (chan->orig_mpwr) { |
| 1228 | /* |
Luis R. Rodriguez | a09a85a | 2013-11-11 22:15:30 +0100 | [diff] [blame] | 1229 | * Devices that use REGULATORY_COUNTRY_IE_FOLLOW_POWER |
| 1230 | * will always follow the passed country IE power settings. |
Stanislaw Gruszka | 5e31fc0 | 2012-07-24 08:35:39 +0200 | [diff] [blame] | 1231 | */ |
| 1232 | if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && |
Luis R. Rodriguez | a09a85a | 2013-11-11 22:15:30 +0100 | [diff] [blame] | 1233 | wiphy->regulatory_flags & REGULATORY_COUNTRY_IE_FOLLOW_POWER) |
Stanislaw Gruszka | 5e31fc0 | 2012-07-24 08:35:39 +0200 | [diff] [blame] | 1234 | chan->max_power = chan->max_reg_power; |
| 1235 | else |
| 1236 | chan->max_power = min(chan->orig_mpwr, |
| 1237 | chan->max_reg_power); |
| 1238 | } else |
| 1239 | chan->max_power = chan->max_reg_power; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1240 | } |
| 1241 | |
Luis R. Rodriguez | 7ca43d0 | 2010-10-20 10:18:53 -0700 | [diff] [blame] | 1242 | static void handle_band(struct wiphy *wiphy, |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1243 | enum nl80211_reg_initiator initiator, |
| 1244 | struct ieee80211_supported_band *sband) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1245 | { |
Luis R. Rodriguez | a92a3ce | 2009-01-07 17:43:33 -0800 | [diff] [blame] | 1246 | unsigned int i; |
Luis R. Rodriguez | a92a3ce | 2009-01-07 17:43:33 -0800 | [diff] [blame] | 1247 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1248 | if (!sband) |
| 1249 | return; |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1250 | |
| 1251 | for (i = 0; i < sband->n_channels; i++) |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1252 | handle_channel(wiphy, initiator, &sband->channels[i]); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1253 | } |
| 1254 | |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1255 | static bool reg_request_cell_base(struct regulatory_request *request) |
| 1256 | { |
| 1257 | if (request->initiator != NL80211_REGDOM_SET_BY_USER) |
| 1258 | return false; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1259 | 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] | 1260 | } |
| 1261 | |
| 1262 | bool reg_last_request_cell_base(void) |
| 1263 | { |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 1264 | return reg_request_cell_base(get_last_request()); |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1265 | } |
| 1266 | |
Ilan Peer | 94fc661 | 2014-02-23 09:13:00 +0200 | [diff] [blame] | 1267 | #ifdef CONFIG_CFG80211_REG_CELLULAR_HINTS |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1268 | /* Core specific check */ |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1269 | static enum reg_request_treatment |
| 1270 | reg_ignore_cell_hint(struct regulatory_request *pending_request) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1271 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1272 | struct regulatory_request *lr = get_last_request(); |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1273 | |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1274 | if (!reg_num_devs_support_basehint) |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1275 | return REG_REQ_IGNORE; |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1276 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1277 | if (reg_request_cell_base(lr) && |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1278 | !regdom_changes(pending_request->alpha2)) |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1279 | return REG_REQ_ALREADY_SET; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1280 | |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1281 | return REG_REQ_OK; |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1282 | } |
| 1283 | |
| 1284 | /* Device specific check */ |
| 1285 | static bool reg_dev_ignore_cell_hint(struct wiphy *wiphy) |
| 1286 | { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1287 | return !(wiphy->features & NL80211_FEATURE_CELL_BASE_REG_HINTS); |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1288 | } |
| 1289 | #else |
| 1290 | static int reg_ignore_cell_hint(struct regulatory_request *pending_request) |
| 1291 | { |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 1292 | return REG_REQ_IGNORE; |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1293 | } |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1294 | |
| 1295 | static bool reg_dev_ignore_cell_hint(struct wiphy *wiphy) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1296 | { |
| 1297 | return true; |
| 1298 | } |
| 1299 | #endif |
| 1300 | |
Luis R. Rodriguez | fa1fb9c | 2013-10-02 18:33:10 -0700 | [diff] [blame] | 1301 | static bool wiphy_strict_alpha2_regd(struct wiphy *wiphy) |
| 1302 | { |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1303 | if (wiphy->regulatory_flags & REGULATORY_STRICT_REG && |
| 1304 | !(wiphy->regulatory_flags & REGULATORY_CUSTOM_REG)) |
Luis R. Rodriguez | fa1fb9c | 2013-10-02 18:33:10 -0700 | [diff] [blame] | 1305 | return true; |
| 1306 | return false; |
| 1307 | } |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1308 | |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1309 | static bool ignore_reg_update(struct wiphy *wiphy, |
| 1310 | enum nl80211_reg_initiator initiator) |
Luis R. Rodriguez | 14b9815 | 2008-11-12 14:22:03 -0800 | [diff] [blame] | 1311 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1312 | struct regulatory_request *lr = get_last_request(); |
| 1313 | |
Jonathan Doron | b0d7aa5 | 2014-12-15 19:26:00 +0200 | [diff] [blame] | 1314 | if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) |
| 1315 | return true; |
| 1316 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1317 | if (!lr) { |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 1318 | REG_DBG_PRINT("Ignoring regulatory request set by %s " |
| 1319 | "since last_request is not set\n", |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1320 | reg_initiator_name(initiator)); |
Luis R. Rodriguez | 14b9815 | 2008-11-12 14:22:03 -0800 | [diff] [blame] | 1321 | return true; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1322 | } |
| 1323 | |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 1324 | if (initiator == NL80211_REGDOM_SET_BY_CORE && |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1325 | wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) { |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 1326 | REG_DBG_PRINT("Ignoring regulatory request set by %s " |
| 1327 | "since the driver uses its own custom " |
| 1328 | "regulatory domain\n", |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1329 | reg_initiator_name(initiator)); |
Luis R. Rodriguez | 14b9815 | 2008-11-12 14:22:03 -0800 | [diff] [blame] | 1330 | return true; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1331 | } |
| 1332 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 1333 | /* |
| 1334 | * wiphy->regd will be set once the device has its own |
| 1335 | * desired regulatory domain set |
| 1336 | */ |
Luis R. Rodriguez | fa1fb9c | 2013-10-02 18:33:10 -0700 | [diff] [blame] | 1337 | if (wiphy_strict_alpha2_regd(wiphy) && !wiphy->regd && |
Luis R. Rodriguez | 749b527 | 2010-10-20 10:18:54 -0700 | [diff] [blame] | 1338 | initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE && |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1339 | !is_world_regdom(lr->alpha2)) { |
Luis R. Rodriguez | 034c6d6 | 2013-10-14 17:42:06 -0700 | [diff] [blame] | 1340 | REG_DBG_PRINT("Ignoring regulatory request set by %s " |
| 1341 | "since the driver requires its own regulatory " |
| 1342 | "domain to be set first\n", |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1343 | reg_initiator_name(initiator)); |
Luis R. Rodriguez | 14b9815 | 2008-11-12 14:22:03 -0800 | [diff] [blame] | 1344 | return true; |
Luis R. Rodriguez | 926a0a0 | 2010-10-21 19:17:03 +0530 | [diff] [blame] | 1345 | } |
| 1346 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1347 | if (reg_request_cell_base(lr)) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 1348 | return reg_dev_ignore_cell_hint(wiphy); |
| 1349 | |
Luis R. Rodriguez | 14b9815 | 2008-11-12 14:22:03 -0800 | [diff] [blame] | 1350 | return false; |
| 1351 | } |
| 1352 | |
Luis R. Rodriguez | 3195e48 | 2012-12-19 10:53:03 -0800 | [diff] [blame] | 1353 | static bool reg_is_world_roaming(struct wiphy *wiphy) |
| 1354 | { |
| 1355 | const struct ieee80211_regdomain *cr = get_cfg80211_regdom(); |
| 1356 | const struct ieee80211_regdomain *wr = get_wiphy_regdom(wiphy); |
| 1357 | struct regulatory_request *lr = get_last_request(); |
| 1358 | |
| 1359 | if (is_world_regdom(cr->alpha2) || (wr && is_world_regdom(wr->alpha2))) |
| 1360 | return true; |
| 1361 | |
| 1362 | if (lr && lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE && |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1363 | wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) |
Luis R. Rodriguez | 3195e48 | 2012-12-19 10:53:03 -0800 | [diff] [blame] | 1364 | return true; |
| 1365 | |
| 1366 | return false; |
| 1367 | } |
| 1368 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1369 | 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] | 1370 | struct reg_beacon *reg_beacon) |
| 1371 | { |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1372 | struct ieee80211_supported_band *sband; |
| 1373 | struct ieee80211_channel *chan; |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1374 | bool channel_changed = false; |
| 1375 | struct ieee80211_channel chan_before; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1376 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1377 | sband = wiphy->bands[reg_beacon->chan.band]; |
| 1378 | chan = &sband->channels[chan_idx]; |
| 1379 | |
| 1380 | if (likely(chan->center_freq != reg_beacon->chan.center_freq)) |
| 1381 | return; |
| 1382 | |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1383 | if (chan->beacon_found) |
| 1384 | return; |
| 1385 | |
| 1386 | chan->beacon_found = true; |
| 1387 | |
Luis R. Rodriguez | 0f500a5 | 2012-12-19 10:53:04 -0800 | [diff] [blame] | 1388 | if (!reg_is_world_roaming(wiphy)) |
| 1389 | return; |
| 1390 | |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1391 | if (wiphy->regulatory_flags & REGULATORY_DISABLE_BEACON_HINTS) |
Luis R. Rodriguez | 3718424 | 2009-07-30 17:43:48 -0700 | [diff] [blame] | 1392 | return; |
| 1393 | |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1394 | chan_before.center_freq = chan->center_freq; |
| 1395 | chan_before.flags = chan->flags; |
| 1396 | |
Luis R. Rodriguez | 8fe02e1 | 2013-10-21 19:22:25 +0200 | [diff] [blame] | 1397 | if (chan->flags & IEEE80211_CHAN_NO_IR) { |
| 1398 | chan->flags &= ~IEEE80211_CHAN_NO_IR; |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1399 | channel_changed = true; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1400 | } |
| 1401 | |
Luis R. Rodriguez | 6bad876 | 2009-04-02 14:08:09 -0400 | [diff] [blame] | 1402 | if (channel_changed) |
| 1403 | nl80211_send_beacon_hint_event(wiphy, &chan_before, chan); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1404 | } |
| 1405 | |
| 1406 | /* |
| 1407 | * Called when a scan on a wiphy finds a beacon on |
| 1408 | * new channel |
| 1409 | */ |
| 1410 | static void wiphy_update_new_beacon(struct wiphy *wiphy, |
| 1411 | struct reg_beacon *reg_beacon) |
| 1412 | { |
| 1413 | unsigned int i; |
| 1414 | struct ieee80211_supported_band *sband; |
| 1415 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1416 | if (!wiphy->bands[reg_beacon->chan.band]) |
| 1417 | return; |
| 1418 | |
| 1419 | sband = wiphy->bands[reg_beacon->chan.band]; |
| 1420 | |
| 1421 | for (i = 0; i < sband->n_channels; i++) |
| 1422 | handle_reg_beacon(wiphy, i, reg_beacon); |
| 1423 | } |
| 1424 | |
| 1425 | /* |
| 1426 | * Called upon reg changes or a new wiphy is added |
| 1427 | */ |
| 1428 | static void wiphy_update_beacon_reg(struct wiphy *wiphy) |
| 1429 | { |
| 1430 | unsigned int i; |
| 1431 | struct ieee80211_supported_band *sband; |
| 1432 | struct reg_beacon *reg_beacon; |
| 1433 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1434 | list_for_each_entry(reg_beacon, ®_beacon_list, list) { |
| 1435 | if (!wiphy->bands[reg_beacon->chan.band]) |
| 1436 | continue; |
| 1437 | sband = wiphy->bands[reg_beacon->chan.band]; |
| 1438 | for (i = 0; i < sband->n_channels; i++) |
| 1439 | handle_reg_beacon(wiphy, i, reg_beacon); |
| 1440 | } |
| 1441 | } |
| 1442 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1443 | /* Reap the advantages of previously found beacons */ |
| 1444 | static void reg_process_beacons(struct wiphy *wiphy) |
| 1445 | { |
Luis R. Rodriguez | b1ed8dd | 2009-05-02 00:34:15 -0400 | [diff] [blame] | 1446 | /* |
| 1447 | * Means we are just firing up cfg80211, so no beacons would |
| 1448 | * have been processed yet. |
| 1449 | */ |
| 1450 | if (!last_request) |
| 1451 | return; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1452 | wiphy_update_beacon_reg(wiphy); |
| 1453 | } |
| 1454 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1455 | static bool is_ht40_allowed(struct ieee80211_channel *chan) |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1456 | { |
| 1457 | if (!chan) |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1458 | return false; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1459 | if (chan->flags & IEEE80211_CHAN_DISABLED) |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1460 | return false; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1461 | /* This would happen when regulatory rules disallow HT40 completely */ |
Felix Fietkau | 55b183a | 2013-01-11 14:22:58 +0100 | [diff] [blame] | 1462 | if ((chan->flags & IEEE80211_CHAN_NO_HT40) == IEEE80211_CHAN_NO_HT40) |
| 1463 | return false; |
| 1464 | return true; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1465 | } |
| 1466 | |
| 1467 | static void reg_process_ht_flags_channel(struct wiphy *wiphy, |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1468 | struct ieee80211_channel *channel) |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1469 | { |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1470 | struct ieee80211_supported_band *sband = wiphy->bands[channel->band]; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1471 | struct ieee80211_channel *channel_before = NULL, *channel_after = NULL; |
| 1472 | unsigned int i; |
| 1473 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1474 | if (!is_ht40_allowed(channel)) { |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1475 | channel->flags |= IEEE80211_CHAN_NO_HT40; |
| 1476 | return; |
| 1477 | } |
| 1478 | |
| 1479 | /* |
| 1480 | * We need to ensure the extension channels exist to |
| 1481 | * be able to use HT40- or HT40+, this finds them (or not) |
| 1482 | */ |
| 1483 | for (i = 0; i < sband->n_channels; i++) { |
| 1484 | struct ieee80211_channel *c = &sband->channels[i]; |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1485 | |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1486 | if (c->center_freq == (channel->center_freq - 20)) |
| 1487 | channel_before = c; |
| 1488 | if (c->center_freq == (channel->center_freq + 20)) |
| 1489 | channel_after = c; |
| 1490 | } |
| 1491 | |
| 1492 | /* |
| 1493 | * Please note that this assumes target bandwidth is 20 MHz, |
| 1494 | * if that ever changes we also need to change the below logic |
| 1495 | * to include that as well. |
| 1496 | */ |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1497 | if (!is_ht40_allowed(channel_before)) |
Luis R. Rodriguez | 689da1b | 2009-05-02 00:37:18 -0400 | [diff] [blame] | 1498 | channel->flags |= IEEE80211_CHAN_NO_HT40MINUS; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1499 | else |
Luis R. Rodriguez | 689da1b | 2009-05-02 00:37:18 -0400 | [diff] [blame] | 1500 | channel->flags &= ~IEEE80211_CHAN_NO_HT40MINUS; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1501 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1502 | if (!is_ht40_allowed(channel_after)) |
Luis R. Rodriguez | 689da1b | 2009-05-02 00:37:18 -0400 | [diff] [blame] | 1503 | channel->flags |= IEEE80211_CHAN_NO_HT40PLUS; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1504 | else |
Luis R. Rodriguez | 689da1b | 2009-05-02 00:37:18 -0400 | [diff] [blame] | 1505 | channel->flags &= ~IEEE80211_CHAN_NO_HT40PLUS; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1506 | } |
| 1507 | |
| 1508 | static void reg_process_ht_flags_band(struct wiphy *wiphy, |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1509 | struct ieee80211_supported_band *sband) |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1510 | { |
| 1511 | unsigned int i; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1512 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1513 | if (!sband) |
| 1514 | return; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1515 | |
| 1516 | for (i = 0; i < sband->n_channels; i++) |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1517 | reg_process_ht_flags_channel(wiphy, &sband->channels[i]); |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1518 | } |
| 1519 | |
| 1520 | static void reg_process_ht_flags(struct wiphy *wiphy) |
| 1521 | { |
| 1522 | enum ieee80211_band band; |
| 1523 | |
| 1524 | if (!wiphy) |
| 1525 | return; |
| 1526 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1527 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) |
| 1528 | reg_process_ht_flags_band(wiphy, wiphy->bands[band]); |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1529 | } |
| 1530 | |
Luis R. Rodriguez | 0e3802d | 2013-11-05 09:18:12 -0800 | [diff] [blame] | 1531 | static void reg_call_notifier(struct wiphy *wiphy, |
| 1532 | struct regulatory_request *request) |
| 1533 | { |
| 1534 | if (wiphy->reg_notifier) |
| 1535 | wiphy->reg_notifier(wiphy, request); |
| 1536 | } |
| 1537 | |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 1538 | static bool reg_wdev_chan_valid(struct wiphy *wiphy, struct wireless_dev *wdev) |
| 1539 | { |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 1540 | struct cfg80211_chan_def chandef; |
| 1541 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
Arik Nemtsov | 2065870 | 2014-12-29 11:59:59 +0200 | [diff] [blame] | 1542 | enum nl80211_iftype iftype; |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 1543 | |
| 1544 | wdev_lock(wdev); |
Arik Nemtsov | 2065870 | 2014-12-29 11:59:59 +0200 | [diff] [blame] | 1545 | iftype = wdev->iftype; |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 1546 | |
Arik Nemtsov | 2065870 | 2014-12-29 11:59:59 +0200 | [diff] [blame] | 1547 | /* make sure the interface is active */ |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 1548 | if (!wdev->netdev || !netif_running(wdev->netdev)) |
Arik Nemtsov | 2065870 | 2014-12-29 11:59:59 +0200 | [diff] [blame] | 1549 | goto wdev_inactive_unlock; |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 1550 | |
Arik Nemtsov | 2065870 | 2014-12-29 11:59:59 +0200 | [diff] [blame] | 1551 | switch (iftype) { |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 1552 | case NL80211_IFTYPE_AP: |
| 1553 | case NL80211_IFTYPE_P2P_GO: |
| 1554 | if (!wdev->beacon_interval) |
Arik Nemtsov | 2065870 | 2014-12-29 11:59:59 +0200 | [diff] [blame] | 1555 | goto wdev_inactive_unlock; |
| 1556 | chandef = wdev->chandef; |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 1557 | break; |
Arik Nemtsov | 185076d | 2014-12-03 18:08:17 +0200 | [diff] [blame] | 1558 | case NL80211_IFTYPE_ADHOC: |
| 1559 | if (!wdev->ssid_len) |
Arik Nemtsov | 2065870 | 2014-12-29 11:59:59 +0200 | [diff] [blame] | 1560 | goto wdev_inactive_unlock; |
| 1561 | chandef = wdev->chandef; |
Arik Nemtsov | 185076d | 2014-12-03 18:08:17 +0200 | [diff] [blame] | 1562 | break; |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 1563 | case NL80211_IFTYPE_STATION: |
| 1564 | case NL80211_IFTYPE_P2P_CLIENT: |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 1565 | if (!wdev->current_bss || |
| 1566 | !wdev->current_bss->pub.channel) |
Arik Nemtsov | 2065870 | 2014-12-29 11:59:59 +0200 | [diff] [blame] | 1567 | goto wdev_inactive_unlock; |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 1568 | |
Arik Nemtsov | 2065870 | 2014-12-29 11:59:59 +0200 | [diff] [blame] | 1569 | if (!rdev->ops->get_channel || |
| 1570 | rdev_get_channel(rdev, wdev, &chandef)) |
| 1571 | cfg80211_chandef_create(&chandef, |
| 1572 | wdev->current_bss->pub.channel, |
| 1573 | NL80211_CHAN_NO_HT); |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 1574 | break; |
| 1575 | case NL80211_IFTYPE_MONITOR: |
| 1576 | case NL80211_IFTYPE_AP_VLAN: |
| 1577 | case NL80211_IFTYPE_P2P_DEVICE: |
| 1578 | /* no enforcement required */ |
| 1579 | break; |
| 1580 | default: |
| 1581 | /* others not implemented for now */ |
| 1582 | WARN_ON(1); |
| 1583 | break; |
| 1584 | } |
| 1585 | |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 1586 | wdev_unlock(wdev); |
Arik Nemtsov | 2065870 | 2014-12-29 11:59:59 +0200 | [diff] [blame] | 1587 | |
| 1588 | switch (iftype) { |
| 1589 | case NL80211_IFTYPE_AP: |
| 1590 | case NL80211_IFTYPE_P2P_GO: |
| 1591 | case NL80211_IFTYPE_ADHOC: |
Arik Nemtsov | 923b352 | 2015-07-08 15:41:44 +0300 | [diff] [blame] | 1592 | return cfg80211_reg_can_beacon_relax(wiphy, &chandef, iftype); |
Arik Nemtsov | 2065870 | 2014-12-29 11:59:59 +0200 | [diff] [blame] | 1593 | case NL80211_IFTYPE_STATION: |
| 1594 | case NL80211_IFTYPE_P2P_CLIENT: |
| 1595 | return cfg80211_chandef_usable(wiphy, &chandef, |
| 1596 | IEEE80211_CHAN_DISABLED); |
| 1597 | default: |
| 1598 | break; |
| 1599 | } |
| 1600 | |
| 1601 | return true; |
| 1602 | |
| 1603 | wdev_inactive_unlock: |
| 1604 | wdev_unlock(wdev); |
| 1605 | return true; |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 1606 | } |
| 1607 | |
| 1608 | static void reg_leave_invalid_chans(struct wiphy *wiphy) |
| 1609 | { |
| 1610 | struct wireless_dev *wdev; |
| 1611 | struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); |
| 1612 | |
| 1613 | ASSERT_RTNL(); |
| 1614 | |
| 1615 | list_for_each_entry(wdev, &rdev->wdev_list, list) |
| 1616 | if (!reg_wdev_chan_valid(wiphy, wdev)) |
| 1617 | cfg80211_leave(rdev, wdev); |
| 1618 | } |
| 1619 | |
| 1620 | static void reg_check_chans_work(struct work_struct *work) |
| 1621 | { |
| 1622 | struct cfg80211_registered_device *rdev; |
| 1623 | |
| 1624 | REG_DBG_PRINT("Verifying active interfaces after reg change\n"); |
| 1625 | rtnl_lock(); |
| 1626 | |
| 1627 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) |
| 1628 | if (!(rdev->wiphy.regulatory_flags & |
| 1629 | REGULATORY_IGNORE_STALE_KICKOFF)) |
| 1630 | reg_leave_invalid_chans(&rdev->wiphy); |
| 1631 | |
| 1632 | rtnl_unlock(); |
| 1633 | } |
| 1634 | |
| 1635 | static void reg_check_channels(void) |
| 1636 | { |
| 1637 | /* |
| 1638 | * Give usermode a chance to do something nicer (move to another |
| 1639 | * channel, orderly disconnection), before forcing a disconnection. |
| 1640 | */ |
| 1641 | mod_delayed_work(system_power_efficient_wq, |
| 1642 | ®_check_chans, |
| 1643 | msecs_to_jiffies(REG_ENFORCE_GRACE_MS)); |
| 1644 | } |
| 1645 | |
Sven Neumann | eac03e3 | 2011-08-30 23:38:53 +0200 | [diff] [blame] | 1646 | static void wiphy_update_regulatory(struct wiphy *wiphy, |
| 1647 | enum nl80211_reg_initiator initiator) |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 1648 | { |
| 1649 | enum ieee80211_band band; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1650 | struct regulatory_request *lr = get_last_request(); |
Sven Neumann | eac03e3 | 2011-08-30 23:38:53 +0200 | [diff] [blame] | 1651 | |
Luis R. Rodriguez | 0e3802d | 2013-11-05 09:18:12 -0800 | [diff] [blame] | 1652 | if (ignore_reg_update(wiphy, initiator)) { |
| 1653 | /* |
| 1654 | * Regulatory updates set by CORE are ignored for custom |
| 1655 | * regulatory cards. Let us notify the changes to the driver, |
| 1656 | * as some drivers used this to restore its orig_* reg domain. |
| 1657 | */ |
| 1658 | if (initiator == NL80211_REGDOM_SET_BY_CORE && |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1659 | wiphy->regulatory_flags & REGULATORY_CUSTOM_REG) |
Luis R. Rodriguez | 0e3802d | 2013-11-05 09:18:12 -0800 | [diff] [blame] | 1660 | reg_call_notifier(wiphy, lr); |
Sven Neumann | a203c2a | 2011-07-12 15:52:07 +0200 | [diff] [blame] | 1661 | return; |
Luis R. Rodriguez | 0e3802d | 2013-11-05 09:18:12 -0800 | [diff] [blame] | 1662 | } |
Sven Neumann | a203c2a | 2011-07-12 15:52:07 +0200 | [diff] [blame] | 1663 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1664 | lr->dfs_region = get_cfg80211_regdom()->dfs_region; |
Luis R. Rodriguez | b68e6b3 | 2011-10-11 10:59:03 -0700 | [diff] [blame] | 1665 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1666 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) |
| 1667 | handle_band(wiphy, initiator, wiphy->bands[band]); |
Sven Neumann | a203c2a | 2011-07-12 15:52:07 +0200 | [diff] [blame] | 1668 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 1669 | reg_process_beacons(wiphy); |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1670 | reg_process_ht_flags(wiphy); |
Luis R. Rodriguez | 0e3802d | 2013-11-05 09:18:12 -0800 | [diff] [blame] | 1671 | reg_call_notifier(wiphy, lr); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 1672 | } |
| 1673 | |
Sven Neumann | d7549cb | 2011-08-30 23:38:54 +0200 | [diff] [blame] | 1674 | static void update_all_wiphy_regulatory(enum nl80211_reg_initiator initiator) |
| 1675 | { |
| 1676 | struct cfg80211_registered_device *rdev; |
Rajkumar Manoharan | 4a38994 | 2011-12-08 23:59:26 +0530 | [diff] [blame] | 1677 | struct wiphy *wiphy; |
Sven Neumann | d7549cb | 2011-08-30 23:38:54 +0200 | [diff] [blame] | 1678 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 1679 | ASSERT_RTNL(); |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 1680 | |
Rajkumar Manoharan | 4a38994 | 2011-12-08 23:59:26 +0530 | [diff] [blame] | 1681 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| 1682 | wiphy = &rdev->wiphy; |
| 1683 | wiphy_update_regulatory(wiphy, initiator); |
Rajkumar Manoharan | 4a38994 | 2011-12-08 23:59:26 +0530 | [diff] [blame] | 1684 | } |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 1685 | |
| 1686 | reg_check_channels(); |
Sven Neumann | d7549cb | 2011-08-30 23:38:54 +0200 | [diff] [blame] | 1687 | } |
| 1688 | |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1689 | static void handle_channel_custom(struct wiphy *wiphy, |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1690 | struct ieee80211_channel *chan, |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1691 | const struct ieee80211_regdomain *regd) |
| 1692 | { |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1693 | u32 bw_flags = 0; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1694 | const struct ieee80211_reg_rule *reg_rule = NULL; |
| 1695 | const struct ieee80211_power_rule *power_rule = NULL; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1696 | const struct ieee80211_freq_range *freq_range = NULL; |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 1697 | u32 max_bandwidth_khz; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1698 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 1699 | reg_rule = freq_reg_info_regd(wiphy, MHZ_TO_KHZ(chan->center_freq), |
| 1700 | regd); |
Luis R. Rodriguez | ac46d48 | 2009-05-01 18:44:50 -0400 | [diff] [blame] | 1701 | |
Johannes Berg | 361c9c8 | 2012-12-06 15:57:14 +0100 | [diff] [blame] | 1702 | if (IS_ERR(reg_rule)) { |
Johannes Berg | fe7ef5e | 2012-12-04 15:07:34 +0100 | [diff] [blame] | 1703 | REG_DBG_PRINT("Disabling freq %d MHz as custom regd has no rule that fits it\n", |
| 1704 | chan->center_freq); |
Arik Nemtsov | db8dfee | 2014-12-15 19:26:02 +0200 | [diff] [blame] | 1705 | if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) { |
| 1706 | chan->flags |= IEEE80211_CHAN_DISABLED; |
| 1707 | } else { |
| 1708 | chan->orig_flags |= IEEE80211_CHAN_DISABLED; |
| 1709 | chan->flags = chan->orig_flags; |
| 1710 | } |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1711 | return; |
| 1712 | } |
| 1713 | |
Janusz Dziedzic | b0dfd2e | 2014-02-20 13:52:16 +0100 | [diff] [blame] | 1714 | chan_reg_rule_print_dbg(regd, chan, reg_rule); |
Luis R. Rodriguez | e702d3c | 2010-10-21 19:17:04 +0530 | [diff] [blame] | 1715 | |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1716 | power_rule = ®_rule->power_rule; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1717 | freq_range = ®_rule->freq_range; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1718 | |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 1719 | max_bandwidth_khz = freq_range->max_bandwidth_khz; |
| 1720 | /* Check if auto calculation requested */ |
Janusz Dziedzic | b0dfd2e | 2014-02-20 13:52:16 +0100 | [diff] [blame] | 1721 | if (reg_rule->flags & NL80211_RRF_AUTO_BW) |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 1722 | max_bandwidth_khz = reg_get_max_bandwidth(regd, reg_rule); |
| 1723 | |
| 1724 | if (max_bandwidth_khz < MHZ_TO_KHZ(40)) |
Johannes Berg | e33e224 | 2014-06-23 11:06:16 +0200 | [diff] [blame] | 1725 | bw_flags = IEEE80211_CHAN_NO_HT40; |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 1726 | if (max_bandwidth_khz < MHZ_TO_KHZ(80)) |
Johannes Berg | c7a6ee2 | 2012-12-12 17:50:39 +0100 | [diff] [blame] | 1727 | bw_flags |= IEEE80211_CHAN_NO_80MHZ; |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 1728 | if (max_bandwidth_khz < MHZ_TO_KHZ(160)) |
Johannes Berg | c7a6ee2 | 2012-12-12 17:50:39 +0100 | [diff] [blame] | 1729 | bw_flags |= IEEE80211_CHAN_NO_160MHZ; |
Luis R. Rodriguez | 038659e | 2009-05-02 00:37:17 -0400 | [diff] [blame] | 1730 | |
Arik Nemtsov | 2e18b38 | 2014-11-16 16:37:46 +0200 | [diff] [blame] | 1731 | chan->dfs_state_entered = jiffies; |
Arik Nemtsov | c7ab508 | 2014-11-16 16:37:47 +0200 | [diff] [blame] | 1732 | chan->dfs_state = NL80211_DFS_USABLE; |
| 1733 | |
| 1734 | chan->beacon_found = false; |
Arik Nemtsov | db8dfee | 2014-12-15 19:26:02 +0200 | [diff] [blame] | 1735 | |
| 1736 | if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) |
| 1737 | chan->flags = chan->orig_flags | bw_flags | |
| 1738 | map_regdom_flags(reg_rule->flags); |
| 1739 | else |
| 1740 | chan->flags |= map_regdom_flags(reg_rule->flags) | bw_flags; |
| 1741 | |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1742 | 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] | 1743 | chan->max_reg_power = chan->max_power = |
| 1744 | (int) MBM_TO_DBM(power_rule->max_eirp); |
Arik Nemtsov | 2e18b38 | 2014-11-16 16:37:46 +0200 | [diff] [blame] | 1745 | |
| 1746 | if (chan->flags & IEEE80211_CHAN_RADAR) { |
| 1747 | if (reg_rule->dfs_cac_ms) |
| 1748 | chan->dfs_cac_ms = reg_rule->dfs_cac_ms; |
| 1749 | else |
| 1750 | chan->dfs_cac_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; |
| 1751 | } |
| 1752 | |
| 1753 | chan->max_power = chan->max_reg_power; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1754 | } |
| 1755 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1756 | static void handle_band_custom(struct wiphy *wiphy, |
| 1757 | struct ieee80211_supported_band *sband, |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1758 | const struct ieee80211_regdomain *regd) |
| 1759 | { |
| 1760 | unsigned int i; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1761 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1762 | if (!sband) |
| 1763 | return; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1764 | |
| 1765 | for (i = 0; i < sband->n_channels; i++) |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1766 | handle_channel_custom(wiphy, &sband->channels[i], regd); |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1767 | } |
| 1768 | |
| 1769 | /* Used by drivers prior to wiphy registration */ |
| 1770 | void wiphy_apply_custom_regulatory(struct wiphy *wiphy, |
| 1771 | const struct ieee80211_regdomain *regd) |
| 1772 | { |
| 1773 | enum ieee80211_band band; |
Luis R. Rodriguez | bbcf3f0 | 2009-05-19 17:49:47 -0400 | [diff] [blame] | 1774 | unsigned int bands_set = 0; |
Luis R. Rodriguez | ac46d48 | 2009-05-01 18:44:50 -0400 | [diff] [blame] | 1775 | |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 1776 | WARN(!(wiphy->regulatory_flags & REGULATORY_CUSTOM_REG), |
| 1777 | "wiphy should have REGULATORY_CUSTOM_REG\n"); |
| 1778 | wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG; |
Luis R. Rodriguez | 222ea58 | 2013-11-05 09:18:00 -0800 | [diff] [blame] | 1779 | |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1780 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
Luis R. Rodriguez | bbcf3f0 | 2009-05-19 17:49:47 -0400 | [diff] [blame] | 1781 | if (!wiphy->bands[band]) |
| 1782 | continue; |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 1783 | handle_band_custom(wiphy, wiphy->bands[band], regd); |
Luis R. Rodriguez | bbcf3f0 | 2009-05-19 17:49:47 -0400 | [diff] [blame] | 1784 | bands_set++; |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1785 | } |
Luis R. Rodriguez | bbcf3f0 | 2009-05-19 17:49:47 -0400 | [diff] [blame] | 1786 | |
| 1787 | /* |
| 1788 | * no point in calling this if it won't have any effect |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 1789 | * on your device's supported bands. |
Luis R. Rodriguez | bbcf3f0 | 2009-05-19 17:49:47 -0400 | [diff] [blame] | 1790 | */ |
| 1791 | WARN_ON(!bands_set); |
Luis R. Rodriguez | 1fa25e4 | 2009-01-22 15:05:44 -0800 | [diff] [blame] | 1792 | } |
| 1793 | EXPORT_SYMBOL(wiphy_apply_custom_regulatory); |
| 1794 | |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1795 | static void reg_set_request_processed(void) |
| 1796 | { |
| 1797 | bool need_more_processing = false; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1798 | struct regulatory_request *lr = get_last_request(); |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1799 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 1800 | lr->processed = true; |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1801 | |
| 1802 | spin_lock(®_requests_lock); |
| 1803 | if (!list_empty(®_requests_list)) |
| 1804 | need_more_processing = true; |
| 1805 | spin_unlock(®_requests_lock); |
| 1806 | |
Ilan peer | eeca9fc | 2015-03-04 00:32:07 -0500 | [diff] [blame] | 1807 | cancel_delayed_work(®_timeout); |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 1808 | |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 1809 | if (need_more_processing) |
| 1810 | schedule_work(®_work); |
| 1811 | } |
| 1812 | |
Luis R. Rodriguez | d1c96a9 | 2009-02-21 00:24:13 -0500 | [diff] [blame] | 1813 | /** |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1814 | * reg_process_hint_core - process core regulatory requests |
| 1815 | * @pending_request: a pending core regulatory request |
| 1816 | * |
| 1817 | * The wireless subsystem can use this function to process |
| 1818 | * a regulatory request issued by the regulatory core. |
| 1819 | * |
| 1820 | * Returns one of the different reg request treatment values. |
| 1821 | */ |
| 1822 | static enum reg_request_treatment |
| 1823 | reg_process_hint_core(struct regulatory_request *core_request) |
| 1824 | { |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1825 | |
| 1826 | core_request->intersect = false; |
| 1827 | core_request->processed = false; |
Luis R. Rodriguez | 5ad6ef5 | 2013-11-05 09:18:08 -0800 | [diff] [blame] | 1828 | |
Luis R. Rodriguez | 05f1a3e | 2013-11-05 09:18:09 -0800 | [diff] [blame] | 1829 | reg_update_last_request(core_request); |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1830 | |
Luis R. Rodriguez | fe6631f | 2013-11-05 09:18:10 -0800 | [diff] [blame] | 1831 | return reg_call_crda(core_request); |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 1832 | } |
| 1833 | |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 1834 | static enum reg_request_treatment |
| 1835 | __reg_process_hint_user(struct regulatory_request *user_request) |
| 1836 | { |
| 1837 | struct regulatory_request *lr = get_last_request(); |
| 1838 | |
| 1839 | if (reg_request_cell_base(user_request)) |
| 1840 | return reg_ignore_cell_hint(user_request); |
| 1841 | |
| 1842 | if (reg_request_cell_base(lr)) |
| 1843 | return REG_REQ_IGNORE; |
| 1844 | |
| 1845 | if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) |
| 1846 | return REG_REQ_INTERSECT; |
| 1847 | /* |
| 1848 | * If the user knows better the user should set the regdom |
| 1849 | * to their country before the IE is picked up |
| 1850 | */ |
| 1851 | if (lr->initiator == NL80211_REGDOM_SET_BY_USER && |
| 1852 | lr->intersect) |
| 1853 | return REG_REQ_IGNORE; |
| 1854 | /* |
| 1855 | * Process user requests only after previous user/driver/core |
| 1856 | * requests have been processed |
| 1857 | */ |
| 1858 | if ((lr->initiator == NL80211_REGDOM_SET_BY_CORE || |
| 1859 | lr->initiator == NL80211_REGDOM_SET_BY_DRIVER || |
| 1860 | lr->initiator == NL80211_REGDOM_SET_BY_USER) && |
| 1861 | regdom_changes(lr->alpha2)) |
| 1862 | return REG_REQ_IGNORE; |
| 1863 | |
| 1864 | if (!regdom_changes(user_request->alpha2)) |
| 1865 | return REG_REQ_ALREADY_SET; |
| 1866 | |
| 1867 | return REG_REQ_OK; |
| 1868 | } |
| 1869 | |
| 1870 | /** |
| 1871 | * reg_process_hint_user - process user regulatory requests |
| 1872 | * @user_request: a pending user regulatory request |
| 1873 | * |
| 1874 | * The wireless subsystem can use this function to process |
| 1875 | * a regulatory request initiated by userspace. |
| 1876 | * |
| 1877 | * Returns one of the different reg request treatment values. |
| 1878 | */ |
| 1879 | static enum reg_request_treatment |
| 1880 | reg_process_hint_user(struct regulatory_request *user_request) |
| 1881 | { |
| 1882 | enum reg_request_treatment treatment; |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 1883 | |
| 1884 | treatment = __reg_process_hint_user(user_request); |
| 1885 | if (treatment == REG_REQ_IGNORE || |
Ilan peer | 0c4ddcd | 2015-03-04 00:32:05 -0500 | [diff] [blame] | 1886 | treatment == REG_REQ_ALREADY_SET) { |
Arik Nemtsov | c888393 | 2014-04-21 20:39:34 -0700 | [diff] [blame] | 1887 | reg_free_request(user_request); |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 1888 | return treatment; |
| 1889 | } |
| 1890 | |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 1891 | user_request->intersect = treatment == REG_REQ_INTERSECT; |
| 1892 | user_request->processed = false; |
Luis R. Rodriguez | 5ad6ef5 | 2013-11-05 09:18:08 -0800 | [diff] [blame] | 1893 | |
Luis R. Rodriguez | 05f1a3e | 2013-11-05 09:18:09 -0800 | [diff] [blame] | 1894 | reg_update_last_request(user_request); |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 1895 | |
| 1896 | user_alpha2[0] = user_request->alpha2[0]; |
| 1897 | user_alpha2[1] = user_request->alpha2[1]; |
| 1898 | |
Luis R. Rodriguez | fe6631f | 2013-11-05 09:18:10 -0800 | [diff] [blame] | 1899 | return reg_call_crda(user_request); |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 1900 | } |
| 1901 | |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1902 | static enum reg_request_treatment |
| 1903 | __reg_process_hint_driver(struct regulatory_request *driver_request) |
| 1904 | { |
| 1905 | struct regulatory_request *lr = get_last_request(); |
| 1906 | |
| 1907 | if (lr->initiator == NL80211_REGDOM_SET_BY_CORE) { |
| 1908 | if (regdom_changes(driver_request->alpha2)) |
| 1909 | return REG_REQ_OK; |
| 1910 | return REG_REQ_ALREADY_SET; |
| 1911 | } |
| 1912 | |
| 1913 | /* |
| 1914 | * This would happen if you unplug and plug your card |
| 1915 | * back in or if you add a new device for which the previously |
| 1916 | * loaded card also agrees on the regulatory domain. |
| 1917 | */ |
| 1918 | if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER && |
| 1919 | !regdom_changes(driver_request->alpha2)) |
| 1920 | return REG_REQ_ALREADY_SET; |
| 1921 | |
| 1922 | return REG_REQ_INTERSECT; |
| 1923 | } |
| 1924 | |
| 1925 | /** |
| 1926 | * reg_process_hint_driver - process driver regulatory requests |
| 1927 | * @driver_request: a pending driver regulatory request |
| 1928 | * |
| 1929 | * The wireless subsystem can use this function to process |
| 1930 | * a regulatory request issued by an 802.11 driver. |
| 1931 | * |
| 1932 | * Returns one of the different reg request treatment values. |
| 1933 | */ |
| 1934 | static enum reg_request_treatment |
| 1935 | reg_process_hint_driver(struct wiphy *wiphy, |
| 1936 | struct regulatory_request *driver_request) |
| 1937 | { |
Arik Nemtsov | 34f05f5 | 2014-12-04 12:22:16 +0200 | [diff] [blame] | 1938 | const struct ieee80211_regdomain *regd, *tmp; |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1939 | enum reg_request_treatment treatment; |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1940 | |
| 1941 | treatment = __reg_process_hint_driver(driver_request); |
| 1942 | |
| 1943 | switch (treatment) { |
| 1944 | case REG_REQ_OK: |
| 1945 | break; |
| 1946 | case REG_REQ_IGNORE: |
Arik Nemtsov | c888393 | 2014-04-21 20:39:34 -0700 | [diff] [blame] | 1947 | reg_free_request(driver_request); |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1948 | return treatment; |
| 1949 | case REG_REQ_INTERSECT: |
| 1950 | /* fall through */ |
| 1951 | case REG_REQ_ALREADY_SET: |
| 1952 | regd = reg_copy_regd(get_cfg80211_regdom()); |
| 1953 | if (IS_ERR(regd)) { |
Arik Nemtsov | c888393 | 2014-04-21 20:39:34 -0700 | [diff] [blame] | 1954 | reg_free_request(driver_request); |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1955 | return REG_REQ_IGNORE; |
| 1956 | } |
Arik Nemtsov | 34f05f5 | 2014-12-04 12:22:16 +0200 | [diff] [blame] | 1957 | |
| 1958 | tmp = get_wiphy_regdom(wiphy); |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1959 | rcu_assign_pointer(wiphy->regd, regd); |
Arik Nemtsov | 34f05f5 | 2014-12-04 12:22:16 +0200 | [diff] [blame] | 1960 | rcu_free_regdom(tmp); |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1961 | } |
| 1962 | |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1963 | |
| 1964 | driver_request->intersect = treatment == REG_REQ_INTERSECT; |
| 1965 | driver_request->processed = false; |
Luis R. Rodriguez | 5ad6ef5 | 2013-11-05 09:18:08 -0800 | [diff] [blame] | 1966 | |
Luis R. Rodriguez | 05f1a3e | 2013-11-05 09:18:09 -0800 | [diff] [blame] | 1967 | reg_update_last_request(driver_request); |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1968 | |
| 1969 | /* |
| 1970 | * Since CRDA will not be called in this case as we already |
| 1971 | * have applied the requested regulatory domain before we just |
| 1972 | * inform userspace we have processed the request |
| 1973 | */ |
| 1974 | if (treatment == REG_REQ_ALREADY_SET) { |
| 1975 | nl80211_send_reg_change_event(driver_request); |
| 1976 | reg_set_request_processed(); |
| 1977 | return treatment; |
| 1978 | } |
| 1979 | |
Luis R. Rodriguez | fe6631f | 2013-11-05 09:18:10 -0800 | [diff] [blame] | 1980 | return reg_call_crda(driver_request); |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 1981 | } |
| 1982 | |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1983 | static enum reg_request_treatment |
| 1984 | __reg_process_hint_country_ie(struct wiphy *wiphy, |
| 1985 | struct regulatory_request *country_ie_request) |
| 1986 | { |
| 1987 | struct wiphy *last_wiphy = NULL; |
| 1988 | struct regulatory_request *lr = get_last_request(); |
| 1989 | |
| 1990 | if (reg_request_cell_base(lr)) { |
| 1991 | /* Trust a Cell base station over the AP's country IE */ |
| 1992 | if (regdom_changes(country_ie_request->alpha2)) |
| 1993 | return REG_REQ_IGNORE; |
| 1994 | return REG_REQ_ALREADY_SET; |
Luis R. Rodriguez | 2a90146 | 2013-11-11 22:15:31 +0100 | [diff] [blame] | 1995 | } else { |
| 1996 | if (wiphy->regulatory_flags & REGULATORY_COUNTRY_IE_IGNORE) |
| 1997 | return REG_REQ_IGNORE; |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 1998 | } |
| 1999 | |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 2000 | if (unlikely(!is_an_alpha2(country_ie_request->alpha2))) |
| 2001 | return -EINVAL; |
Luis R. Rodriguez | 2f1c6c5 | 2013-11-05 09:18:07 -0800 | [diff] [blame] | 2002 | |
| 2003 | if (lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) |
| 2004 | return REG_REQ_OK; |
| 2005 | |
| 2006 | last_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx); |
| 2007 | |
| 2008 | if (last_wiphy != wiphy) { |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 2009 | /* |
Luis R. Rodriguez | 2f1c6c5 | 2013-11-05 09:18:07 -0800 | [diff] [blame] | 2010 | * Two cards with two APs claiming different |
| 2011 | * Country IE alpha2s. We could |
| 2012 | * intersect them, but that seems unlikely |
| 2013 | * to be correct. Reject second one for now. |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 2014 | */ |
Luis R. Rodriguez | 2f1c6c5 | 2013-11-05 09:18:07 -0800 | [diff] [blame] | 2015 | if (regdom_changes(country_ie_request->alpha2)) |
| 2016 | return REG_REQ_IGNORE; |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 2017 | return REG_REQ_ALREADY_SET; |
| 2018 | } |
Emmanuel Grumbach | 70dcec5 | 2014-12-02 09:53:25 +0200 | [diff] [blame] | 2019 | |
| 2020 | if (regdom_changes(country_ie_request->alpha2)) |
Luis R. Rodriguez | 2f1c6c5 | 2013-11-05 09:18:07 -0800 | [diff] [blame] | 2021 | return REG_REQ_OK; |
| 2022 | return REG_REQ_ALREADY_SET; |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 2023 | } |
| 2024 | |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 2025 | /** |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 2026 | * reg_process_hint_country_ie - process regulatory requests from country IEs |
| 2027 | * @country_ie_request: a regulatory request from a country IE |
Luis R. Rodriguez | d1c96a9 | 2009-02-21 00:24:13 -0500 | [diff] [blame] | 2028 | * |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 2029 | * The wireless subsystem can use this function to process |
| 2030 | * a regulatory request issued by a country Information Element. |
Luis R. Rodriguez | d1c96a9 | 2009-02-21 00:24:13 -0500 | [diff] [blame] | 2031 | * |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 2032 | * Returns one of the different reg request treatment values. |
Luis R. Rodriguez | d1c96a9 | 2009-02-21 00:24:13 -0500 | [diff] [blame] | 2033 | */ |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 2034 | static enum reg_request_treatment |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 2035 | reg_process_hint_country_ie(struct wiphy *wiphy, |
| 2036 | struct regulatory_request *country_ie_request) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2037 | { |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 2038 | enum reg_request_treatment treatment; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2039 | |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 2040 | treatment = __reg_process_hint_country_ie(wiphy, country_ie_request); |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 2041 | |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 2042 | switch (treatment) { |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 2043 | case REG_REQ_OK: |
| 2044 | break; |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 2045 | case REG_REQ_IGNORE: |
| 2046 | /* fall through */ |
| 2047 | case REG_REQ_ALREADY_SET: |
Arik Nemtsov | c888393 | 2014-04-21 20:39:34 -0700 | [diff] [blame] | 2048 | reg_free_request(country_ie_request); |
Johannes Berg | 2f92212 | 2012-12-03 17:54:55 +0100 | [diff] [blame] | 2049 | return treatment; |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 2050 | case REG_REQ_INTERSECT: |
Arik Nemtsov | c888393 | 2014-04-21 20:39:34 -0700 | [diff] [blame] | 2051 | reg_free_request(country_ie_request); |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 2052 | /* |
| 2053 | * This doesn't happen yet, not sure we |
| 2054 | * ever want to support it for this case. |
| 2055 | */ |
| 2056 | WARN_ONCE(1, "Unexpected intersection for country IEs"); |
| 2057 | return REG_REQ_IGNORE; |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 2058 | } |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2059 | |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 2060 | country_ie_request->intersect = false; |
| 2061 | country_ie_request->processed = false; |
Luis R. Rodriguez | 5ad6ef5 | 2013-11-05 09:18:08 -0800 | [diff] [blame] | 2062 | |
Luis R. Rodriguez | 05f1a3e | 2013-11-05 09:18:09 -0800 | [diff] [blame] | 2063 | reg_update_last_request(country_ie_request); |
Luis R. Rodriguez | d951c1d | 2009-02-21 00:24:15 -0500 | [diff] [blame] | 2064 | |
Luis R. Rodriguez | fe6631f | 2013-11-05 09:18:10 -0800 | [diff] [blame] | 2065 | return reg_call_crda(country_ie_request); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2066 | } |
| 2067 | |
Luis R. Rodriguez | 30a548c | 2009-05-02 01:17:27 -0400 | [diff] [blame] | 2068 | /* This processes *all* regulatory hints */ |
Luis R. Rodriguez | 1daa37c | 2013-11-05 09:18:02 -0800 | [diff] [blame] | 2069 | static void reg_process_hint(struct regulatory_request *reg_request) |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2070 | { |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2071 | struct wiphy *wiphy = NULL; |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 2072 | enum reg_request_treatment treatment; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2073 | |
Johannes Berg | f417376 | 2012-12-03 18:23:37 +0100 | [diff] [blame] | 2074 | if (reg_request->wiphy_idx != WIPHY_IDX_INVALID) |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2075 | wiphy = wiphy_idx_to_wiphy(reg_request->wiphy_idx); |
| 2076 | |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 2077 | switch (reg_request->initiator) { |
| 2078 | case NL80211_REGDOM_SET_BY_CORE: |
| 2079 | reg_process_hint_core(reg_request); |
| 2080 | return; |
| 2081 | case NL80211_REGDOM_SET_BY_USER: |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 2082 | treatment = reg_process_hint_user(reg_request); |
Inbal Hacohen | 50c11eb | 2014-02-12 09:32:27 +0200 | [diff] [blame] | 2083 | if (treatment == REG_REQ_IGNORE || |
Ilan peer | 0c4ddcd | 2015-03-04 00:32:05 -0500 | [diff] [blame] | 2084 | treatment == REG_REQ_ALREADY_SET) |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 2085 | return; |
Luis R. Rodriguez | 0d97a61 | 2013-11-05 09:18:04 -0800 | [diff] [blame] | 2086 | return; |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 2087 | case NL80211_REGDOM_SET_BY_DRIVER: |
Ilan Peer | 772f038 | 2014-01-14 15:17:23 +0200 | [diff] [blame] | 2088 | if (!wiphy) |
| 2089 | goto out_free; |
Luis R. Rodriguez | 21636c7 | 2013-11-05 09:18:05 -0800 | [diff] [blame] | 2090 | treatment = reg_process_hint_driver(wiphy, reg_request); |
| 2091 | break; |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 2092 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
Ilan Peer | 772f038 | 2014-01-14 15:17:23 +0200 | [diff] [blame] | 2093 | if (!wiphy) |
| 2094 | goto out_free; |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 2095 | treatment = reg_process_hint_country_ie(wiphy, reg_request); |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 2096 | break; |
| 2097 | default: |
| 2098 | WARN(1, "invalid initiator %d\n", reg_request->initiator); |
Ilan Peer | 772f038 | 2014-01-14 15:17:23 +0200 | [diff] [blame] | 2099 | goto out_free; |
Luis R. Rodriguez | b3eb7f3 | 2013-11-05 09:18:03 -0800 | [diff] [blame] | 2100 | } |
| 2101 | |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 2102 | /* This is required so that the orig_* parameters are saved */ |
| 2103 | if (treatment == REG_REQ_ALREADY_SET && wiphy && |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 2104 | wiphy->regulatory_flags & REGULATORY_STRICT_REG) { |
Luis R. Rodriguez | b23e7a9 | 2013-11-05 09:18:06 -0800 | [diff] [blame] | 2105 | wiphy_update_regulatory(wiphy, reg_request->initiator); |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 2106 | reg_check_channels(); |
| 2107 | } |
Ilan Peer | 772f038 | 2014-01-14 15:17:23 +0200 | [diff] [blame] | 2108 | |
| 2109 | return; |
| 2110 | |
| 2111 | out_free: |
Arik Nemtsov | c888393 | 2014-04-21 20:39:34 -0700 | [diff] [blame] | 2112 | reg_free_request(reg_request); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2113 | } |
| 2114 | |
Arik Nemtsov | ef51fb1 | 2015-01-07 16:47:20 +0200 | [diff] [blame] | 2115 | static bool reg_only_self_managed_wiphys(void) |
| 2116 | { |
| 2117 | struct cfg80211_registered_device *rdev; |
| 2118 | struct wiphy *wiphy; |
| 2119 | bool self_managed_found = false; |
| 2120 | |
| 2121 | ASSERT_RTNL(); |
| 2122 | |
| 2123 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| 2124 | wiphy = &rdev->wiphy; |
| 2125 | if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) |
| 2126 | self_managed_found = true; |
| 2127 | else |
| 2128 | return false; |
| 2129 | } |
| 2130 | |
| 2131 | /* make sure at least one self-managed wiphy exists */ |
| 2132 | return self_managed_found; |
| 2133 | } |
| 2134 | |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 2135 | /* |
| 2136 | * Processes regulatory hints, this is all the NL80211_REGDOM_SET_BY_* |
| 2137 | * Regulatory hints come on a first come first serve basis and we |
| 2138 | * must process each one atomically. |
| 2139 | */ |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2140 | static void reg_process_pending_hints(void) |
Luis R. Rodriguez | b0e2880 | 2010-11-17 21:46:08 -0800 | [diff] [blame] | 2141 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2142 | struct regulatory_request *reg_request, *lr; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2143 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2144 | lr = get_last_request(); |
Luis R. Rodriguez | b0e2880 | 2010-11-17 21:46:08 -0800 | [diff] [blame] | 2145 | |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 2146 | /* When last_request->processed becomes true this will be rescheduled */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2147 | if (lr && !lr->processed) { |
Luis R. Rodriguez | 96cce12 | 2014-04-21 20:39:35 -0700 | [diff] [blame] | 2148 | reg_process_hint(lr); |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 2149 | return; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2150 | } |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 2151 | |
| 2152 | spin_lock(®_requests_lock); |
| 2153 | |
| 2154 | if (list_empty(®_requests_list)) { |
| 2155 | spin_unlock(®_requests_lock); |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 2156 | return; |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 2157 | } |
| 2158 | |
| 2159 | reg_request = list_first_entry(®_requests_list, |
| 2160 | struct regulatory_request, |
| 2161 | list); |
| 2162 | list_del_init(®_request->list); |
| 2163 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2164 | spin_unlock(®_requests_lock); |
Luis R. Rodriguez | b0e2880 | 2010-11-17 21:46:08 -0800 | [diff] [blame] | 2165 | |
Arik Nemtsov | ef51fb1 | 2015-01-07 16:47:20 +0200 | [diff] [blame] | 2166 | if (reg_only_self_managed_wiphys()) { |
| 2167 | reg_free_request(reg_request); |
| 2168 | return; |
| 2169 | } |
| 2170 | |
Luis R. Rodriguez | 1daa37c | 2013-11-05 09:18:02 -0800 | [diff] [blame] | 2171 | reg_process_hint(reg_request); |
Ben | 2e54a68 | 2015-03-12 09:37:34 -0400 | [diff] [blame] | 2172 | |
| 2173 | lr = get_last_request(); |
| 2174 | |
| 2175 | spin_lock(®_requests_lock); |
| 2176 | if (!list_empty(®_requests_list) && lr && lr->processed) |
| 2177 | schedule_work(®_work); |
| 2178 | spin_unlock(®_requests_lock); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2179 | } |
| 2180 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2181 | /* Processes beacon hints -- this has nothing to do with country IEs */ |
| 2182 | static void reg_process_pending_beacon_hints(void) |
| 2183 | { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 2184 | struct cfg80211_registered_device *rdev; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2185 | struct reg_beacon *pending_beacon, *tmp; |
| 2186 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2187 | /* This goes through the _pending_ beacon list */ |
| 2188 | spin_lock_bh(®_pending_beacons_lock); |
| 2189 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2190 | list_for_each_entry_safe(pending_beacon, tmp, |
| 2191 | ®_pending_beacons, list) { |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2192 | list_del_init(&pending_beacon->list); |
| 2193 | |
| 2194 | /* Applies the beacon hint to current wiphys */ |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 2195 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) |
| 2196 | wiphy_update_new_beacon(&rdev->wiphy, pending_beacon); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2197 | |
| 2198 | /* Remembers the beacon hint for new wiphys or reg changes */ |
| 2199 | list_add_tail(&pending_beacon->list, ®_beacon_list); |
| 2200 | } |
| 2201 | |
| 2202 | spin_unlock_bh(®_pending_beacons_lock); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2203 | } |
| 2204 | |
Jonathan Doron | b0d7aa5 | 2014-12-15 19:26:00 +0200 | [diff] [blame] | 2205 | static void reg_process_self_managed_hints(void) |
| 2206 | { |
| 2207 | struct cfg80211_registered_device *rdev; |
| 2208 | struct wiphy *wiphy; |
| 2209 | const struct ieee80211_regdomain *tmp; |
| 2210 | const struct ieee80211_regdomain *regd; |
| 2211 | enum ieee80211_band band; |
| 2212 | struct regulatory_request request = {}; |
| 2213 | |
| 2214 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
| 2215 | wiphy = &rdev->wiphy; |
| 2216 | |
| 2217 | spin_lock(®_requests_lock); |
| 2218 | regd = rdev->requested_regd; |
| 2219 | rdev->requested_regd = NULL; |
| 2220 | spin_unlock(®_requests_lock); |
| 2221 | |
| 2222 | if (regd == NULL) |
| 2223 | continue; |
| 2224 | |
| 2225 | tmp = get_wiphy_regdom(wiphy); |
| 2226 | rcu_assign_pointer(wiphy->regd, regd); |
| 2227 | rcu_free_regdom(tmp); |
| 2228 | |
| 2229 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) |
| 2230 | handle_band_custom(wiphy, wiphy->bands[band], regd); |
| 2231 | |
| 2232 | reg_process_ht_flags(wiphy); |
| 2233 | |
| 2234 | request.wiphy_idx = get_wiphy_idx(wiphy); |
| 2235 | request.alpha2[0] = regd->alpha2[0]; |
| 2236 | request.alpha2[1] = regd->alpha2[1]; |
| 2237 | request.initiator = NL80211_REGDOM_SET_BY_DRIVER; |
| 2238 | |
| 2239 | nl80211_send_wiphy_reg_change_event(&request); |
| 2240 | } |
| 2241 | |
| 2242 | reg_check_channels(); |
| 2243 | } |
| 2244 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2245 | static void reg_todo(struct work_struct *work) |
| 2246 | { |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 2247 | rtnl_lock(); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2248 | reg_process_pending_hints(); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2249 | reg_process_pending_beacon_hints(); |
Jonathan Doron | b0d7aa5 | 2014-12-15 19:26:00 +0200 | [diff] [blame] | 2250 | reg_process_self_managed_hints(); |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 2251 | rtnl_unlock(); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2252 | } |
| 2253 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2254 | static void queue_regulatory_request(struct regulatory_request *request) |
| 2255 | { |
Johannes Berg | d4f2c88 | 2012-12-03 18:59:58 +0100 | [diff] [blame] | 2256 | request->alpha2[0] = toupper(request->alpha2[0]); |
| 2257 | request->alpha2[1] = toupper(request->alpha2[1]); |
John W. Linville | c61029c | 2010-08-05 14:26:24 -0400 | [diff] [blame] | 2258 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2259 | spin_lock(®_requests_lock); |
| 2260 | list_add_tail(&request->list, ®_requests_list); |
| 2261 | spin_unlock(®_requests_lock); |
| 2262 | |
| 2263 | schedule_work(®_work); |
| 2264 | } |
| 2265 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2266 | /* |
| 2267 | * Core regulatory hint -- happens during cfg80211_init() |
| 2268 | * and when we restore regulatory settings. |
| 2269 | */ |
Luis R. Rodriguez | ba25c14 | 2009-02-21 00:04:23 -0500 | [diff] [blame] | 2270 | static int regulatory_hint_core(const char *alpha2) |
| 2271 | { |
| 2272 | struct regulatory_request *request; |
| 2273 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2274 | request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); |
Luis R. Rodriguez | ba25c14 | 2009-02-21 00:04:23 -0500 | [diff] [blame] | 2275 | if (!request) |
| 2276 | return -ENOMEM; |
| 2277 | |
| 2278 | request->alpha2[0] = alpha2[0]; |
| 2279 | request->alpha2[1] = alpha2[1]; |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 2280 | request->initiator = NL80211_REGDOM_SET_BY_CORE; |
Luis R. Rodriguez | ba25c14 | 2009-02-21 00:04:23 -0500 | [diff] [blame] | 2281 | |
Luis R. Rodriguez | 31e9972 | 2010-11-17 21:46:06 -0800 | [diff] [blame] | 2282 | queue_regulatory_request(request); |
Luis R. Rodriguez | 5078b2e | 2009-05-13 17:04:42 -0400 | [diff] [blame] | 2283 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2284 | return 0; |
Luis R. Rodriguez | ba25c14 | 2009-02-21 00:04:23 -0500 | [diff] [blame] | 2285 | } |
| 2286 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2287 | /* User hints */ |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2288 | int regulatory_hint_user(const char *alpha2, |
| 2289 | enum nl80211_user_reg_hint_type user_reg_hint_type) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2290 | { |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2291 | struct regulatory_request *request; |
| 2292 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 2293 | if (WARN_ON(!alpha2)) |
| 2294 | return -EINVAL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2295 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2296 | request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); |
| 2297 | if (!request) |
| 2298 | return -ENOMEM; |
| 2299 | |
Johannes Berg | f417376 | 2012-12-03 18:23:37 +0100 | [diff] [blame] | 2300 | request->wiphy_idx = WIPHY_IDX_INVALID; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2301 | request->alpha2[0] = alpha2[0]; |
| 2302 | request->alpha2[1] = alpha2[1]; |
Luis R. Rodriguez | e12822e | 2010-01-04 11:37:39 -0500 | [diff] [blame] | 2303 | request->initiator = NL80211_REGDOM_SET_BY_USER; |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2304 | request->user_reg_hint_type = user_reg_hint_type; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2305 | |
Ilan peer | c37722b | 2015-03-30 15:15:49 +0300 | [diff] [blame] | 2306 | /* Allow calling CRDA again */ |
| 2307 | reg_crda_timeouts = 0; |
| 2308 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2309 | queue_regulatory_request(request); |
| 2310 | |
| 2311 | return 0; |
| 2312 | } |
| 2313 | |
Ilan peer | 0505075 | 2015-03-04 00:32:06 -0500 | [diff] [blame] | 2314 | int regulatory_hint_indoor(bool is_indoor, u32 portid) |
Ilan Peer | 52616f2 | 2014-02-25 16:26:00 +0200 | [diff] [blame] | 2315 | { |
Ilan peer | 0505075 | 2015-03-04 00:32:06 -0500 | [diff] [blame] | 2316 | spin_lock(®_indoor_lock); |
Ilan Peer | 52616f2 | 2014-02-25 16:26:00 +0200 | [diff] [blame] | 2317 | |
Ilan peer | 0505075 | 2015-03-04 00:32:06 -0500 | [diff] [blame] | 2318 | /* It is possible that more than one user space process is trying to |
| 2319 | * configure the indoor setting. To handle such cases, clear the indoor |
| 2320 | * setting in case that some process does not think that the device |
| 2321 | * is operating in an indoor environment. In addition, if a user space |
| 2322 | * process indicates that it is controlling the indoor setting, save its |
| 2323 | * portid, i.e., make it the owner. |
| 2324 | */ |
| 2325 | reg_is_indoor = is_indoor; |
| 2326 | if (reg_is_indoor) { |
| 2327 | if (!reg_is_indoor_portid) |
| 2328 | reg_is_indoor_portid = portid; |
| 2329 | } else { |
| 2330 | reg_is_indoor_portid = 0; |
| 2331 | } |
Ilan Peer | 52616f2 | 2014-02-25 16:26:00 +0200 | [diff] [blame] | 2332 | |
Ilan peer | 0505075 | 2015-03-04 00:32:06 -0500 | [diff] [blame] | 2333 | spin_unlock(®_indoor_lock); |
| 2334 | |
| 2335 | if (!is_indoor) |
| 2336 | reg_check_channels(); |
Ilan Peer | 52616f2 | 2014-02-25 16:26:00 +0200 | [diff] [blame] | 2337 | |
| 2338 | return 0; |
| 2339 | } |
| 2340 | |
Ilan peer | 0505075 | 2015-03-04 00:32:06 -0500 | [diff] [blame] | 2341 | void regulatory_netlink_notify(u32 portid) |
| 2342 | { |
| 2343 | spin_lock(®_indoor_lock); |
| 2344 | |
| 2345 | if (reg_is_indoor_portid != portid) { |
| 2346 | spin_unlock(®_indoor_lock); |
| 2347 | return; |
| 2348 | } |
| 2349 | |
| 2350 | reg_is_indoor = false; |
| 2351 | reg_is_indoor_portid = 0; |
| 2352 | |
| 2353 | spin_unlock(®_indoor_lock); |
| 2354 | |
| 2355 | reg_check_channels(); |
| 2356 | } |
| 2357 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2358 | /* Driver hints */ |
| 2359 | int regulatory_hint(struct wiphy *wiphy, const char *alpha2) |
| 2360 | { |
| 2361 | struct regulatory_request *request; |
| 2362 | |
Johannes Berg | fdc9d7b | 2012-12-03 18:36:09 +0100 | [diff] [blame] | 2363 | if (WARN_ON(!alpha2 || !wiphy)) |
| 2364 | return -EINVAL; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2365 | |
Luis R. Rodriguez | 4f7b914 | 2013-12-14 20:09:06 +0100 | [diff] [blame] | 2366 | wiphy->regulatory_flags &= ~REGULATORY_CUSTOM_REG; |
| 2367 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2368 | request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL); |
| 2369 | if (!request) |
| 2370 | return -ENOMEM; |
| 2371 | |
| 2372 | request->wiphy_idx = get_wiphy_idx(wiphy); |
| 2373 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2374 | request->alpha2[0] = alpha2[0]; |
| 2375 | request->alpha2[1] = alpha2[1]; |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 2376 | request->initiator = NL80211_REGDOM_SET_BY_DRIVER; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2377 | |
Ilan peer | c37722b | 2015-03-30 15:15:49 +0300 | [diff] [blame] | 2378 | /* Allow calling CRDA again */ |
| 2379 | reg_crda_timeouts = 0; |
| 2380 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2381 | queue_regulatory_request(request); |
| 2382 | |
| 2383 | return 0; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2384 | } |
| 2385 | EXPORT_SYMBOL(regulatory_hint); |
| 2386 | |
Luis R. Rodriguez | 789fd03 | 2013-10-04 18:07:24 -0700 | [diff] [blame] | 2387 | void regulatory_hint_country_ie(struct wiphy *wiphy, enum ieee80211_band band, |
| 2388 | const u8 *country_ie, u8 country_ie_len) |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2389 | { |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2390 | char alpha2[2]; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2391 | enum environment_cap env = ENVIRON_ANY; |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 2392 | struct regulatory_request *request = NULL, *lr; |
Luis R. Rodriguez | d335fe6 | 2009-02-21 00:04:27 -0500 | [diff] [blame] | 2393 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2394 | /* IE len must be evenly divisible by 2 */ |
| 2395 | if (country_ie_len & 0x01) |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 2396 | return; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2397 | |
| 2398 | if (country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN) |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 2399 | return; |
| 2400 | |
| 2401 | request = kzalloc(sizeof(*request), GFP_KERNEL); |
| 2402 | if (!request) |
| 2403 | return; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2404 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2405 | alpha2[0] = country_ie[0]; |
| 2406 | alpha2[1] = country_ie[1]; |
| 2407 | |
| 2408 | if (country_ie[2] == 'I') |
| 2409 | env = ENVIRON_INDOOR; |
| 2410 | else if (country_ie[2] == 'O') |
| 2411 | env = ENVIRON_OUTDOOR; |
| 2412 | |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 2413 | rcu_read_lock(); |
| 2414 | lr = get_last_request(); |
| 2415 | |
| 2416 | if (unlikely(!lr)) |
| 2417 | goto out; |
| 2418 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2419 | /* |
Luis R. Rodriguez | 8b19e6c | 2009-07-30 17:38:09 -0700 | [diff] [blame] | 2420 | * We will run this only upon a successful connection on cfg80211. |
Luis R. Rodriguez | 4b44c8b | 2009-07-30 17:38:07 -0700 | [diff] [blame] | 2421 | * We leave conflict resolution to the workqueue, where can hold |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 2422 | * the RTNL. |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2423 | */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2424 | if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && |
| 2425 | lr->wiphy_idx != WIPHY_IDX_INVALID) |
Luis R. Rodriguez | 4b44c8b | 2009-07-30 17:38:07 -0700 | [diff] [blame] | 2426 | goto out; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2427 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2428 | request->wiphy_idx = get_wiphy_idx(wiphy); |
John W. Linville | 4f366c5 | 2010-07-15 14:57:33 -0400 | [diff] [blame] | 2429 | request->alpha2[0] = alpha2[0]; |
| 2430 | request->alpha2[1] = alpha2[1]; |
Luis R. Rodriguez | 7db90f4 | 2009-03-09 22:07:41 -0400 | [diff] [blame] | 2431 | request->initiator = NL80211_REGDOM_SET_BY_COUNTRY_IE; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2432 | request->country_ie_env = env; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2433 | |
Ilan peer | c37722b | 2015-03-30 15:15:49 +0300 | [diff] [blame] | 2434 | /* Allow calling CRDA again */ |
| 2435 | reg_crda_timeouts = 0; |
| 2436 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 2437 | queue_regulatory_request(request); |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 2438 | request = NULL; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2439 | out: |
Johannes Berg | db2424c | 2013-05-10 19:07:52 +0200 | [diff] [blame] | 2440 | kfree(request); |
| 2441 | rcu_read_unlock(); |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2442 | } |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2443 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2444 | static void restore_alpha2(char *alpha2, bool reset_user) |
| 2445 | { |
| 2446 | /* indicates there is no alpha2 to consider for restoration */ |
| 2447 | alpha2[0] = '9'; |
| 2448 | alpha2[1] = '7'; |
| 2449 | |
| 2450 | /* The user setting has precedence over the module parameter */ |
| 2451 | if (is_user_regdom_saved()) { |
| 2452 | /* Unless we're asked to ignore it and reset it */ |
| 2453 | if (reset_user) { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2454 | REG_DBG_PRINT("Restoring regulatory settings including user preference\n"); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2455 | user_alpha2[0] = '9'; |
| 2456 | user_alpha2[1] = '7'; |
| 2457 | |
| 2458 | /* |
| 2459 | * If we're ignoring user settings, we still need to |
| 2460 | * check the module parameter to ensure we put things |
| 2461 | * back as they were for a full restore. |
| 2462 | */ |
| 2463 | if (!is_world_regdom(ieee80211_regdom)) { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2464 | REG_DBG_PRINT("Keeping preference on module parameter ieee80211_regdom: %c%c\n", |
| 2465 | ieee80211_regdom[0], ieee80211_regdom[1]); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2466 | alpha2[0] = ieee80211_regdom[0]; |
| 2467 | alpha2[1] = ieee80211_regdom[1]; |
| 2468 | } |
| 2469 | } else { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2470 | REG_DBG_PRINT("Restoring regulatory settings while preserving user preference for: %c%c\n", |
| 2471 | user_alpha2[0], user_alpha2[1]); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2472 | alpha2[0] = user_alpha2[0]; |
| 2473 | alpha2[1] = user_alpha2[1]; |
| 2474 | } |
| 2475 | } else if (!is_world_regdom(ieee80211_regdom)) { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2476 | REG_DBG_PRINT("Keeping preference on module parameter ieee80211_regdom: %c%c\n", |
| 2477 | ieee80211_regdom[0], ieee80211_regdom[1]); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2478 | alpha2[0] = ieee80211_regdom[0]; |
| 2479 | alpha2[1] = ieee80211_regdom[1]; |
| 2480 | } else |
Luis R. Rodriguez | d91e41b | 2010-10-20 10:18:59 -0700 | [diff] [blame] | 2481 | REG_DBG_PRINT("Restoring regulatory settings\n"); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2482 | } |
| 2483 | |
Rajkumar Manoharan | 5ce543d | 2011-12-07 21:50:08 +0530 | [diff] [blame] | 2484 | static void restore_custom_reg_settings(struct wiphy *wiphy) |
| 2485 | { |
| 2486 | struct ieee80211_supported_band *sband; |
| 2487 | enum ieee80211_band band; |
| 2488 | struct ieee80211_channel *chan; |
| 2489 | int i; |
| 2490 | |
| 2491 | for (band = 0; band < IEEE80211_NUM_BANDS; band++) { |
| 2492 | sband = wiphy->bands[band]; |
| 2493 | if (!sband) |
| 2494 | continue; |
| 2495 | for (i = 0; i < sband->n_channels; i++) { |
| 2496 | chan = &sband->channels[i]; |
| 2497 | chan->flags = chan->orig_flags; |
| 2498 | chan->max_antenna_gain = chan->orig_mag; |
| 2499 | chan->max_power = chan->orig_mpwr; |
Paul Stewart | 899852a | 2012-08-01 16:54:42 -0700 | [diff] [blame] | 2500 | chan->beacon_found = false; |
Rajkumar Manoharan | 5ce543d | 2011-12-07 21:50:08 +0530 | [diff] [blame] | 2501 | } |
| 2502 | } |
| 2503 | } |
| 2504 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2505 | /* |
| 2506 | * Restoring regulatory settings involves ingoring any |
| 2507 | * possibly stale country IE information and user regulatory |
| 2508 | * settings if so desired, this includes any beacon hints |
| 2509 | * learned as we could have traveled outside to another country |
| 2510 | * after disconnection. To restore regulatory settings we do |
| 2511 | * exactly what we did at bootup: |
| 2512 | * |
| 2513 | * - send a core regulatory hint |
| 2514 | * - send a user regulatory hint if applicable |
| 2515 | * |
| 2516 | * Device drivers that send a regulatory hint for a specific country |
| 2517 | * keep their own regulatory domain on wiphy->regd so that does does |
| 2518 | * not need to be remembered. |
| 2519 | */ |
| 2520 | static void restore_regulatory_settings(bool reset_user) |
| 2521 | { |
| 2522 | char alpha2[2]; |
Dmitry Shmidt | cee0bec | 2011-12-19 12:32:21 -0800 | [diff] [blame] | 2523 | char world_alpha2[2]; |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2524 | struct reg_beacon *reg_beacon, *btmp; |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 2525 | LIST_HEAD(tmp_reg_req_list); |
Rajkumar Manoharan | 5ce543d | 2011-12-07 21:50:08 +0530 | [diff] [blame] | 2526 | struct cfg80211_registered_device *rdev; |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2527 | |
Johannes Berg | 5fe231e | 2013-05-08 21:45:15 +0200 | [diff] [blame] | 2528 | ASSERT_RTNL(); |
| 2529 | |
Ilan peer | 0505075 | 2015-03-04 00:32:06 -0500 | [diff] [blame] | 2530 | /* |
| 2531 | * Clear the indoor setting in case that it is not controlled by user |
| 2532 | * space, as otherwise there is no guarantee that the device is still |
| 2533 | * operating in an indoor environment. |
| 2534 | */ |
| 2535 | spin_lock(®_indoor_lock); |
| 2536 | if (reg_is_indoor && !reg_is_indoor_portid) { |
| 2537 | reg_is_indoor = false; |
| 2538 | reg_check_channels(); |
| 2539 | } |
| 2540 | spin_unlock(®_indoor_lock); |
Ilan Peer | 52616f2 | 2014-02-25 16:26:00 +0200 | [diff] [blame] | 2541 | |
Johannes Berg | 2d31986 | 2013-01-09 12:01:38 +0100 | [diff] [blame] | 2542 | reset_regdomains(true, &world_regdom); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2543 | restore_alpha2(alpha2, reset_user); |
| 2544 | |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 2545 | /* |
| 2546 | * If there's any pending requests we simply |
| 2547 | * stash them to a temporary pending queue and |
| 2548 | * add then after we've restored regulatory |
| 2549 | * settings. |
| 2550 | */ |
| 2551 | spin_lock(®_requests_lock); |
Ilan peer | eeca9fc | 2015-03-04 00:32:07 -0500 | [diff] [blame] | 2552 | list_splice_tail_init(®_requests_list, &tmp_reg_req_list); |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 2553 | spin_unlock(®_requests_lock); |
| 2554 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2555 | /* Clear beacon hints */ |
| 2556 | spin_lock_bh(®_pending_beacons_lock); |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 2557 | list_for_each_entry_safe(reg_beacon, btmp, ®_pending_beacons, list) { |
| 2558 | list_del(®_beacon->list); |
| 2559 | kfree(reg_beacon); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2560 | } |
| 2561 | spin_unlock_bh(®_pending_beacons_lock); |
| 2562 | |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 2563 | list_for_each_entry_safe(reg_beacon, btmp, ®_beacon_list, list) { |
| 2564 | list_del(®_beacon->list); |
| 2565 | kfree(reg_beacon); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2566 | } |
| 2567 | |
| 2568 | /* First restore to the basic regulatory settings */ |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 2569 | world_alpha2[0] = cfg80211_world_regdom->alpha2[0]; |
| 2570 | world_alpha2[1] = cfg80211_world_regdom->alpha2[1]; |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2571 | |
Rajkumar Manoharan | 5ce543d | 2011-12-07 21:50:08 +0530 | [diff] [blame] | 2572 | list_for_each_entry(rdev, &cfg80211_rdev_list, list) { |
Jonathan Doron | b0d7aa5 | 2014-12-15 19:26:00 +0200 | [diff] [blame] | 2573 | if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) |
| 2574 | continue; |
Luis R. Rodriguez | a2f73b6 | 2013-11-11 22:15:29 +0100 | [diff] [blame] | 2575 | if (rdev->wiphy.regulatory_flags & REGULATORY_CUSTOM_REG) |
Rajkumar Manoharan | 5ce543d | 2011-12-07 21:50:08 +0530 | [diff] [blame] | 2576 | restore_custom_reg_settings(&rdev->wiphy); |
| 2577 | } |
| 2578 | |
Dmitry Shmidt | cee0bec | 2011-12-19 12:32:21 -0800 | [diff] [blame] | 2579 | regulatory_hint_core(world_alpha2); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2580 | |
| 2581 | /* |
| 2582 | * This restores the ieee80211_regdom module parameter |
| 2583 | * preference or the last user requested regulatory |
| 2584 | * settings, user regulatory settings takes precedence. |
| 2585 | */ |
| 2586 | if (is_an_alpha2(alpha2)) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2587 | regulatory_hint_user(user_alpha2, NL80211_USER_REG_HINT_USER); |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2588 | |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 2589 | spin_lock(®_requests_lock); |
Johannes Berg | 11cff96 | 2012-12-03 18:56:41 +0100 | [diff] [blame] | 2590 | list_splice_tail_init(&tmp_reg_req_list, ®_requests_list); |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 2591 | spin_unlock(®_requests_lock); |
| 2592 | |
Luis R. Rodriguez | 1460955 | 2011-04-05 10:49:03 -0700 | [diff] [blame] | 2593 | REG_DBG_PRINT("Kicking the queue\n"); |
| 2594 | |
| 2595 | schedule_work(®_work); |
| 2596 | } |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 2597 | |
| 2598 | void regulatory_hint_disconnect(void) |
| 2599 | { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2600 | 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] | 2601 | restore_regulatory_settings(false); |
| 2602 | } |
| 2603 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2604 | static bool freq_is_chan_12_13_14(u16 freq) |
| 2605 | { |
Bruno Randolf | 59eb21a | 2011-01-17 13:37:28 +0900 | [diff] [blame] | 2606 | if (freq == ieee80211_channel_to_frequency(12, IEEE80211_BAND_2GHZ) || |
| 2607 | freq == ieee80211_channel_to_frequency(13, IEEE80211_BAND_2GHZ) || |
| 2608 | freq == ieee80211_channel_to_frequency(14, IEEE80211_BAND_2GHZ)) |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2609 | return true; |
| 2610 | return false; |
| 2611 | } |
| 2612 | |
Luis R. Rodriguez | 3ebfa6e | 2012-12-19 10:53:02 -0800 | [diff] [blame] | 2613 | static bool pending_reg_beacon(struct ieee80211_channel *beacon_chan) |
| 2614 | { |
| 2615 | struct reg_beacon *pending_beacon; |
| 2616 | |
| 2617 | list_for_each_entry(pending_beacon, ®_pending_beacons, list) |
| 2618 | if (beacon_chan->center_freq == |
| 2619 | pending_beacon->chan.center_freq) |
| 2620 | return true; |
| 2621 | return false; |
| 2622 | } |
| 2623 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2624 | int regulatory_hint_found_beacon(struct wiphy *wiphy, |
| 2625 | struct ieee80211_channel *beacon_chan, |
| 2626 | gfp_t gfp) |
| 2627 | { |
| 2628 | struct reg_beacon *reg_beacon; |
Luis R. Rodriguez | 3ebfa6e | 2012-12-19 10:53:02 -0800 | [diff] [blame] | 2629 | bool processing; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2630 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2631 | if (beacon_chan->beacon_found || |
| 2632 | beacon_chan->flags & IEEE80211_CHAN_RADAR || |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2633 | (beacon_chan->band == IEEE80211_BAND_2GHZ && |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2634 | !freq_is_chan_12_13_14(beacon_chan->center_freq))) |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2635 | return 0; |
| 2636 | |
Luis R. Rodriguez | 3ebfa6e | 2012-12-19 10:53:02 -0800 | [diff] [blame] | 2637 | spin_lock_bh(®_pending_beacons_lock); |
| 2638 | processing = pending_reg_beacon(beacon_chan); |
| 2639 | spin_unlock_bh(®_pending_beacons_lock); |
| 2640 | |
| 2641 | if (processing) |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2642 | return 0; |
| 2643 | |
| 2644 | reg_beacon = kzalloc(sizeof(struct reg_beacon), gfp); |
| 2645 | if (!reg_beacon) |
| 2646 | return -ENOMEM; |
| 2647 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2648 | 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] | 2649 | beacon_chan->center_freq, |
| 2650 | ieee80211_frequency_to_channel(beacon_chan->center_freq), |
| 2651 | wiphy_name(wiphy)); |
| 2652 | |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2653 | memcpy(®_beacon->chan, beacon_chan, |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2654 | sizeof(struct ieee80211_channel)); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 2655 | |
| 2656 | /* |
| 2657 | * Since we can be called from BH or and non-BH context |
| 2658 | * we must use spin_lock_bh() |
| 2659 | */ |
| 2660 | spin_lock_bh(®_pending_beacons_lock); |
| 2661 | list_add_tail(®_beacon->list, ®_pending_beacons); |
| 2662 | spin_unlock_bh(®_pending_beacons_lock); |
| 2663 | |
| 2664 | schedule_work(®_work); |
| 2665 | |
| 2666 | return 0; |
| 2667 | } |
| 2668 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 2669 | static void print_rd_rules(const struct ieee80211_regdomain *rd) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2670 | { |
| 2671 | unsigned int i; |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 2672 | const struct ieee80211_reg_rule *reg_rule = NULL; |
| 2673 | const struct ieee80211_freq_range *freq_range = NULL; |
| 2674 | const struct ieee80211_power_rule *power_rule = NULL; |
Janusz Dziedzic | 089027e | 2014-02-21 19:46:12 +0100 | [diff] [blame] | 2675 | char bw[32], cac_time[32]; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2676 | |
Janusz Dziedzic | 089027e | 2014-02-21 19:46:12 +0100 | [diff] [blame] | 2677 | pr_info(" (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)\n"); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2678 | |
| 2679 | for (i = 0; i < rd->n_reg_rules; i++) { |
| 2680 | reg_rule = &rd->reg_rules[i]; |
| 2681 | freq_range = ®_rule->freq_range; |
| 2682 | power_rule = ®_rule->power_rule; |
| 2683 | |
Janusz Dziedzic | b0dfd2e | 2014-02-20 13:52:16 +0100 | [diff] [blame] | 2684 | if (reg_rule->flags & NL80211_RRF_AUTO_BW) |
| 2685 | snprintf(bw, sizeof(bw), "%d KHz, %d KHz AUTO", |
| 2686 | freq_range->max_bandwidth_khz, |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 2687 | reg_get_max_bandwidth(rd, reg_rule)); |
| 2688 | else |
Janusz Dziedzic | b0dfd2e | 2014-02-20 13:52:16 +0100 | [diff] [blame] | 2689 | snprintf(bw, sizeof(bw), "%d KHz", |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 2690 | freq_range->max_bandwidth_khz); |
| 2691 | |
Janusz Dziedzic | 089027e | 2014-02-21 19:46:12 +0100 | [diff] [blame] | 2692 | if (reg_rule->flags & NL80211_RRF_DFS) |
| 2693 | scnprintf(cac_time, sizeof(cac_time), "%u s", |
| 2694 | reg_rule->dfs_cac_ms/1000); |
| 2695 | else |
| 2696 | scnprintf(cac_time, sizeof(cac_time), "N/A"); |
| 2697 | |
| 2698 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2699 | /* |
| 2700 | * There may not be documentation for max antenna gain |
| 2701 | * in certain regions |
| 2702 | */ |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2703 | if (power_rule->max_antenna_gain) |
Janusz Dziedzic | 089027e | 2014-02-21 19:46:12 +0100 | [diff] [blame] | 2704 | pr_info(" (%d KHz - %d KHz @ %s), (%d mBi, %d mBm), (%s)\n", |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2705 | freq_range->start_freq_khz, |
| 2706 | freq_range->end_freq_khz, |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 2707 | bw, |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2708 | power_rule->max_antenna_gain, |
Janusz Dziedzic | 089027e | 2014-02-21 19:46:12 +0100 | [diff] [blame] | 2709 | power_rule->max_eirp, |
| 2710 | cac_time); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2711 | else |
Janusz Dziedzic | 089027e | 2014-02-21 19:46:12 +0100 | [diff] [blame] | 2712 | pr_info(" (%d KHz - %d KHz @ %s), (N/A, %d mBm), (%s)\n", |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2713 | freq_range->start_freq_khz, |
| 2714 | freq_range->end_freq_khz, |
Janusz Dziedzic | 9752482 | 2014-01-30 09:52:20 +0100 | [diff] [blame] | 2715 | bw, |
Janusz Dziedzic | 089027e | 2014-02-21 19:46:12 +0100 | [diff] [blame] | 2716 | power_rule->max_eirp, |
| 2717 | cac_time); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2718 | } |
| 2719 | } |
| 2720 | |
Luis R. Rodriguez | 4c7d398 | 2013-11-13 18:54:02 +0100 | [diff] [blame] | 2721 | bool reg_supported_dfs_region(enum nl80211_dfs_regions dfs_region) |
Luis R. Rodriguez | 8b60b07 | 2011-10-11 10:59:02 -0700 | [diff] [blame] | 2722 | { |
| 2723 | switch (dfs_region) { |
| 2724 | case NL80211_DFS_UNSET: |
| 2725 | case NL80211_DFS_FCC: |
| 2726 | case NL80211_DFS_ETSI: |
| 2727 | case NL80211_DFS_JP: |
| 2728 | return true; |
| 2729 | default: |
| 2730 | REG_DBG_PRINT("Ignoring uknown DFS master region: %d\n", |
| 2731 | dfs_region); |
| 2732 | return false; |
| 2733 | } |
| 2734 | } |
| 2735 | |
Johannes Berg | a3d2eaf | 2008-09-15 11:10:52 +0200 | [diff] [blame] | 2736 | static void print_regdomain(const struct ieee80211_regdomain *rd) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2737 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2738 | struct regulatory_request *lr = get_last_request(); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2739 | |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2740 | if (is_intersected_alpha2(rd->alpha2)) { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2741 | if (lr->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) { |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 2742 | struct cfg80211_registered_device *rdev; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2743 | rdev = cfg80211_rdev_by_wiphy_idx(lr->wiphy_idx); |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 2744 | if (rdev) { |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2745 | pr_info("Current regulatory domain updated by AP to: %c%c\n", |
Johannes Berg | 79c97e9 | 2009-07-07 03:56:12 +0200 | [diff] [blame] | 2746 | rdev->country_ie_alpha2[0], |
| 2747 | rdev->country_ie_alpha2[1]); |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2748 | } else |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2749 | pr_info("Current regulatory domain intersected:\n"); |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 2750 | } else |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2751 | pr_info("Current regulatory domain intersected:\n"); |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2752 | } else if (is_world_regdom(rd->alpha2)) { |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2753 | pr_info("World regulatory domain updated:\n"); |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2754 | } else { |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2755 | if (is_unknown_alpha2(rd->alpha2)) |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2756 | 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] | 2757 | else { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2758 | if (reg_request_cell_base(lr)) |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2759 | 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] | 2760 | rd->alpha2[0], rd->alpha2[1]); |
| 2761 | else |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2762 | pr_info("Regulatory domain changed to country: %c%c\n", |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 2763 | rd->alpha2[0], rd->alpha2[1]); |
| 2764 | } |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2765 | } |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 2766 | |
Luis R. Rodriguez | 3ef121b | 2013-11-13 18:54:05 +0100 | [diff] [blame] | 2767 | pr_info(" DFS Master region: %s", reg_dfs_region_str(rd->dfs_region)); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2768 | print_rd_rules(rd); |
| 2769 | } |
| 2770 | |
Johannes Berg | 2df7816 | 2008-10-28 16:49:41 +0100 | [diff] [blame] | 2771 | static void print_regdomain_info(const struct ieee80211_regdomain *rd) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2772 | { |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2773 | 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] | 2774 | print_rd_rules(rd); |
| 2775 | } |
| 2776 | |
Luis R. Rodriguez | 3b9e5ac | 2013-11-05 09:18:14 -0800 | [diff] [blame] | 2777 | static int reg_set_rd_core(const struct ieee80211_regdomain *rd) |
| 2778 | { |
| 2779 | if (!is_world_regdom(rd->alpha2)) |
| 2780 | return -EINVAL; |
| 2781 | update_world_regdomain(rd); |
| 2782 | return 0; |
| 2783 | } |
| 2784 | |
Luis R. Rodriguez | 84721d4 | 2013-11-05 09:18:15 -0800 | [diff] [blame] | 2785 | static int reg_set_rd_user(const struct ieee80211_regdomain *rd, |
| 2786 | struct regulatory_request *user_request) |
| 2787 | { |
| 2788 | const struct ieee80211_regdomain *intersected_rd = NULL; |
| 2789 | |
Luis R. Rodriguez | 84721d4 | 2013-11-05 09:18:15 -0800 | [diff] [blame] | 2790 | if (!regdom_changes(rd->alpha2)) |
| 2791 | return -EALREADY; |
| 2792 | |
| 2793 | if (!is_valid_rd(rd)) { |
| 2794 | pr_err("Invalid regulatory domain detected:\n"); |
| 2795 | print_regdomain_info(rd); |
| 2796 | return -EINVAL; |
| 2797 | } |
| 2798 | |
| 2799 | if (!user_request->intersect) { |
| 2800 | reset_regdomains(false, rd); |
| 2801 | return 0; |
| 2802 | } |
| 2803 | |
| 2804 | intersected_rd = regdom_intersect(rd, get_cfg80211_regdom()); |
| 2805 | if (!intersected_rd) |
| 2806 | return -EINVAL; |
| 2807 | |
| 2808 | kfree(rd); |
| 2809 | rd = NULL; |
| 2810 | reset_regdomains(false, intersected_rd); |
| 2811 | |
| 2812 | return 0; |
| 2813 | } |
| 2814 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2815 | static int reg_set_rd_driver(const struct ieee80211_regdomain *rd, |
| 2816 | struct regulatory_request *driver_request) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2817 | { |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 2818 | const struct ieee80211_regdomain *regd; |
Luis R. Rodriguez | 9c96477 | 2008-10-30 13:33:53 -0700 | [diff] [blame] | 2819 | const struct ieee80211_regdomain *intersected_rd = NULL; |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2820 | const struct ieee80211_regdomain *tmp; |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 2821 | struct wiphy *request_wiphy; |
Johannes Berg | 6913b49 | 2012-12-04 00:48:59 +0100 | [diff] [blame] | 2822 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2823 | if (is_world_regdom(rd->alpha2)) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2824 | return -EINVAL; |
| 2825 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2826 | if (!regdom_changes(rd->alpha2)) |
| 2827 | return -EALREADY; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2828 | |
Luis R. Rodriguez | 8375af3 | 2008-11-12 14:21:57 -0800 | [diff] [blame] | 2829 | if (!is_valid_rd(rd)) { |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 2830 | pr_err("Invalid regulatory domain detected:\n"); |
Luis R. Rodriguez | 8375af3 | 2008-11-12 14:21:57 -0800 | [diff] [blame] | 2831 | print_regdomain_info(rd); |
| 2832 | return -EINVAL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2833 | } |
| 2834 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2835 | request_wiphy = wiphy_idx_to_wiphy(driver_request->wiphy_idx); |
| 2836 | if (!request_wiphy) { |
Shaibal Dutta | 845f335 | 2014-01-30 15:08:30 -0800 | [diff] [blame] | 2837 | queue_delayed_work(system_power_efficient_wq, |
| 2838 | ®_timeout, 0); |
Johannes Berg | de3584b | 2011-11-21 10:44:00 +0100 | [diff] [blame] | 2839 | return -ENODEV; |
| 2840 | } |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 2841 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2842 | if (!driver_request->intersect) { |
Luis R. Rodriguez | 558f6d3 | 2009-06-08 18:54:37 -0700 | [diff] [blame] | 2843 | if (request_wiphy->regd) |
| 2844 | return -EALREADY; |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 2845 | |
Johannes Berg | e9763c3 | 2012-12-03 16:59:46 +0100 | [diff] [blame] | 2846 | regd = reg_copy_regd(rd); |
| 2847 | if (IS_ERR(regd)) |
| 2848 | return PTR_ERR(regd); |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 2849 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2850 | rcu_assign_pointer(request_wiphy->regd, regd); |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 2851 | reset_regdomains(false, rd); |
Luis R. Rodriguez | b8295ac | 2008-11-12 14:21:58 -0800 | [diff] [blame] | 2852 | return 0; |
| 2853 | } |
| 2854 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2855 | intersected_rd = regdom_intersect(rd, get_cfg80211_regdom()); |
| 2856 | if (!intersected_rd) |
| 2857 | return -EINVAL; |
Luis R. Rodriguez | b8295ac | 2008-11-12 14:21:58 -0800 | [diff] [blame] | 2858 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2859 | /* |
| 2860 | * We can trash what CRDA provided now. |
| 2861 | * However if a driver requested this specific regulatory |
| 2862 | * domain we keep it for its private use |
| 2863 | */ |
| 2864 | tmp = get_wiphy_regdom(request_wiphy); |
| 2865 | rcu_assign_pointer(request_wiphy->regd, rd); |
| 2866 | rcu_free_regdom(tmp); |
Luis R. Rodriguez | b8295ac | 2008-11-12 14:21:58 -0800 | [diff] [blame] | 2867 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2868 | rd = NULL; |
Larry Finger | b7566fc | 2013-02-04 15:33:44 -0600 | [diff] [blame] | 2869 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2870 | reset_regdomains(false, intersected_rd); |
Luis R. Rodriguez | 3e0c3ff | 2009-01-07 17:43:34 -0800 | [diff] [blame] | 2871 | |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2872 | return 0; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2873 | } |
| 2874 | |
Luis R. Rodriguez | 0199240 | 2013-11-05 09:18:17 -0800 | [diff] [blame] | 2875 | static int reg_set_rd_country_ie(const struct ieee80211_regdomain *rd, |
| 2876 | struct regulatory_request *country_ie_request) |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2877 | { |
| 2878 | struct wiphy *request_wiphy; |
| 2879 | |
| 2880 | if (!is_alpha2_set(rd->alpha2) && !is_an_alpha2(rd->alpha2) && |
| 2881 | !is_unknown_alpha2(rd->alpha2)) |
| 2882 | return -EINVAL; |
| 2883 | |
| 2884 | /* |
| 2885 | * Lets only bother proceeding on the same alpha2 if the current |
| 2886 | * rd is non static (it means CRDA was present and was used last) |
| 2887 | * and the pending request came in from a country IE |
| 2888 | */ |
| 2889 | |
| 2890 | if (!is_valid_rd(rd)) { |
| 2891 | pr_err("Invalid regulatory domain detected:\n"); |
| 2892 | print_regdomain_info(rd); |
| 2893 | return -EINVAL; |
| 2894 | } |
| 2895 | |
Luis R. Rodriguez | 0199240 | 2013-11-05 09:18:17 -0800 | [diff] [blame] | 2896 | request_wiphy = wiphy_idx_to_wiphy(country_ie_request->wiphy_idx); |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2897 | if (!request_wiphy) { |
Shaibal Dutta | 845f335 | 2014-01-30 15:08:30 -0800 | [diff] [blame] | 2898 | queue_delayed_work(system_power_efficient_wq, |
| 2899 | ®_timeout, 0); |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2900 | return -ENODEV; |
| 2901 | } |
| 2902 | |
Luis R. Rodriguez | 0199240 | 2013-11-05 09:18:17 -0800 | [diff] [blame] | 2903 | if (country_ie_request->intersect) |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2904 | return -EINVAL; |
| 2905 | |
| 2906 | reset_regdomains(false, rd); |
| 2907 | return 0; |
| 2908 | } |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2909 | |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2910 | /* |
| 2911 | * Use this call to set the current regulatory domain. Conflicts with |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2912 | * multiple drivers can be ironed out later. Caller must've already |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2913 | * kmalloc'd the rd structure. |
Luis R. Rodriguez | fb1fc7a | 2009-02-21 00:04:31 -0500 | [diff] [blame] | 2914 | */ |
Ilan peer | c37722b | 2015-03-30 15:15:49 +0300 | [diff] [blame] | 2915 | int set_regdom(const struct ieee80211_regdomain *rd, |
| 2916 | enum ieee80211_regd_source regd_src) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2917 | { |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2918 | struct regulatory_request *lr; |
Janusz Dziedzic | 092008a | 2014-02-14 08:54:00 +0100 | [diff] [blame] | 2919 | bool user_reset = false; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2920 | int r; |
| 2921 | |
Luis R. Rodriguez | 3b9e5ac | 2013-11-05 09:18:14 -0800 | [diff] [blame] | 2922 | if (!reg_is_valid_request(rd->alpha2)) { |
| 2923 | kfree(rd); |
| 2924 | return -EINVAL; |
| 2925 | } |
| 2926 | |
Ilan peer | c37722b | 2015-03-30 15:15:49 +0300 | [diff] [blame] | 2927 | if (regd_src == REGD_SOURCE_CRDA) |
| 2928 | reg_crda_timeouts = 0; |
| 2929 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2930 | lr = get_last_request(); |
Luis R. Rodriguez | abc7381 | 2009-07-30 17:38:08 -0700 | [diff] [blame] | 2931 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2932 | /* Note that this doesn't update the wiphys, this is done below */ |
Luis R. Rodriguez | 3b9e5ac | 2013-11-05 09:18:14 -0800 | [diff] [blame] | 2933 | switch (lr->initiator) { |
| 2934 | case NL80211_REGDOM_SET_BY_CORE: |
| 2935 | r = reg_set_rd_core(rd); |
| 2936 | break; |
| 2937 | case NL80211_REGDOM_SET_BY_USER: |
Luis R. Rodriguez | 84721d4 | 2013-11-05 09:18:15 -0800 | [diff] [blame] | 2938 | r = reg_set_rd_user(rd, lr); |
Janusz Dziedzic | 092008a | 2014-02-14 08:54:00 +0100 | [diff] [blame] | 2939 | user_reset = true; |
Luis R. Rodriguez | 84721d4 | 2013-11-05 09:18:15 -0800 | [diff] [blame] | 2940 | break; |
Luis R. Rodriguez | 3b9e5ac | 2013-11-05 09:18:14 -0800 | [diff] [blame] | 2941 | case NL80211_REGDOM_SET_BY_DRIVER: |
Luis R. Rodriguez | f5fe324 | 2013-11-05 09:18:16 -0800 | [diff] [blame] | 2942 | r = reg_set_rd_driver(rd, lr); |
| 2943 | break; |
Luis R. Rodriguez | 3b9e5ac | 2013-11-05 09:18:14 -0800 | [diff] [blame] | 2944 | case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
Luis R. Rodriguez | 0199240 | 2013-11-05 09:18:17 -0800 | [diff] [blame] | 2945 | r = reg_set_rd_country_ie(rd, lr); |
Luis R. Rodriguez | 3b9e5ac | 2013-11-05 09:18:14 -0800 | [diff] [blame] | 2946 | break; |
| 2947 | default: |
| 2948 | WARN(1, "invalid initiator %d\n", lr->initiator); |
| 2949 | return -EINVAL; |
| 2950 | } |
| 2951 | |
Johannes Berg | d2372b3 | 2008-10-24 20:32:20 +0200 | [diff] [blame] | 2952 | if (r) { |
Janusz Dziedzic | 092008a | 2014-02-14 08:54:00 +0100 | [diff] [blame] | 2953 | switch (r) { |
| 2954 | case -EALREADY: |
Kalle Valo | 9590853 | 2012-07-12 15:33:58 +0300 | [diff] [blame] | 2955 | reg_set_request_processed(); |
Janusz Dziedzic | 092008a | 2014-02-14 08:54:00 +0100 | [diff] [blame] | 2956 | break; |
| 2957 | default: |
| 2958 | /* Back to world regulatory in case of errors */ |
| 2959 | restore_regulatory_settings(user_reset); |
| 2960 | } |
Kalle Valo | 9590853 | 2012-07-12 15:33:58 +0300 | [diff] [blame] | 2961 | |
Johannes Berg | d2372b3 | 2008-10-24 20:32:20 +0200 | [diff] [blame] | 2962 | kfree(rd); |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2963 | return r; |
Johannes Berg | d2372b3 | 2008-10-24 20:32:20 +0200 | [diff] [blame] | 2964 | } |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2965 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2966 | /* This would make this whole thing pointless */ |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2967 | if (WARN_ON(!lr->intersect && rd != get_cfg80211_regdom())) |
| 2968 | return -EINVAL; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2969 | |
| 2970 | /* update all wiphys now with the new established regulatory domain */ |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2971 | update_all_wiphy_regulatory(lr->initiator); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2972 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 2973 | print_regdomain(get_cfg80211_regdom()); |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2974 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 2975 | nl80211_send_reg_change_event(lr); |
Luis R. Rodriguez | 73d54c9 | 2009-03-09 22:07:42 -0400 | [diff] [blame] | 2976 | |
Luis R. Rodriguez | b2e253c | 2010-11-17 21:46:09 -0800 | [diff] [blame] | 2977 | reg_set_request_processed(); |
| 2978 | |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 2979 | return 0; |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 2980 | } |
| 2981 | |
Arik Nemtsov | 2c3e861 | 2015-01-07 16:47:19 +0200 | [diff] [blame] | 2982 | static int __regulatory_set_wiphy_regd(struct wiphy *wiphy, |
| 2983 | struct ieee80211_regdomain *rd) |
Jonathan Doron | b0d7aa5 | 2014-12-15 19:26:00 +0200 | [diff] [blame] | 2984 | { |
| 2985 | const struct ieee80211_regdomain *regd; |
| 2986 | const struct ieee80211_regdomain *prev_regd; |
| 2987 | struct cfg80211_registered_device *rdev; |
| 2988 | |
| 2989 | if (WARN_ON(!wiphy || !rd)) |
| 2990 | return -EINVAL; |
| 2991 | |
| 2992 | if (WARN(!(wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED), |
| 2993 | "wiphy should have REGULATORY_WIPHY_SELF_MANAGED\n")) |
| 2994 | return -EPERM; |
| 2995 | |
| 2996 | if (WARN(!is_valid_rd(rd), "Invalid regulatory domain detected\n")) { |
| 2997 | print_regdomain_info(rd); |
| 2998 | return -EINVAL; |
| 2999 | } |
| 3000 | |
| 3001 | regd = reg_copy_regd(rd); |
| 3002 | if (IS_ERR(regd)) |
| 3003 | return PTR_ERR(regd); |
| 3004 | |
| 3005 | rdev = wiphy_to_rdev(wiphy); |
| 3006 | |
| 3007 | spin_lock(®_requests_lock); |
| 3008 | prev_regd = rdev->requested_regd; |
| 3009 | rdev->requested_regd = regd; |
| 3010 | spin_unlock(®_requests_lock); |
| 3011 | |
| 3012 | kfree(prev_regd); |
Arik Nemtsov | 2c3e861 | 2015-01-07 16:47:19 +0200 | [diff] [blame] | 3013 | return 0; |
| 3014 | } |
| 3015 | |
| 3016 | int regulatory_set_wiphy_regd(struct wiphy *wiphy, |
| 3017 | struct ieee80211_regdomain *rd) |
| 3018 | { |
| 3019 | int ret = __regulatory_set_wiphy_regd(wiphy, rd); |
| 3020 | |
| 3021 | if (ret) |
| 3022 | return ret; |
Jonathan Doron | b0d7aa5 | 2014-12-15 19:26:00 +0200 | [diff] [blame] | 3023 | |
| 3024 | schedule_work(®_work); |
| 3025 | return 0; |
| 3026 | } |
| 3027 | EXPORT_SYMBOL(regulatory_set_wiphy_regd); |
| 3028 | |
Arik Nemtsov | 2c3e861 | 2015-01-07 16:47:19 +0200 | [diff] [blame] | 3029 | int regulatory_set_wiphy_regd_sync_rtnl(struct wiphy *wiphy, |
| 3030 | struct ieee80211_regdomain *rd) |
| 3031 | { |
| 3032 | int ret; |
| 3033 | |
| 3034 | ASSERT_RTNL(); |
| 3035 | |
| 3036 | ret = __regulatory_set_wiphy_regd(wiphy, rd); |
| 3037 | if (ret) |
| 3038 | return ret; |
| 3039 | |
| 3040 | /* process the request immediately */ |
| 3041 | reg_process_self_managed_hints(); |
| 3042 | return 0; |
| 3043 | } |
| 3044 | EXPORT_SYMBOL(regulatory_set_wiphy_regd_sync_rtnl); |
| 3045 | |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 3046 | void wiphy_regulatory_register(struct wiphy *wiphy) |
| 3047 | { |
Arik Nemtsov | 23df0b7 | 2013-07-21 16:36:48 +0300 | [diff] [blame] | 3048 | struct regulatory_request *lr; |
| 3049 | |
Jonathan Doron | b0d7aa5 | 2014-12-15 19:26:00 +0200 | [diff] [blame] | 3050 | /* self-managed devices ignore external hints */ |
| 3051 | if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) |
| 3052 | wiphy->regulatory_flags |= REGULATORY_DISABLE_BEACON_HINTS | |
| 3053 | REGULATORY_COUNTRY_IE_IGNORE; |
| 3054 | |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 3055 | if (!reg_dev_ignore_cell_hint(wiphy)) |
| 3056 | reg_num_devs_support_basehint++; |
| 3057 | |
Arik Nemtsov | 23df0b7 | 2013-07-21 16:36:48 +0300 | [diff] [blame] | 3058 | lr = get_last_request(); |
| 3059 | wiphy_update_regulatory(wiphy, lr->initiator); |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 3060 | } |
| 3061 | |
Luis R. Rodriguez | bfead08 | 2012-07-12 11:49:19 -0700 | [diff] [blame] | 3062 | void wiphy_regulatory_deregister(struct wiphy *wiphy) |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 3063 | { |
Luis R. Rodriguez | 0ad8aca | 2009-03-24 21:21:08 -0400 | [diff] [blame] | 3064 | struct wiphy *request_wiphy = NULL; |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 3065 | struct regulatory_request *lr; |
Luis R. Rodriguez | 761cf7e | 2009-02-21 00:04:25 -0500 | [diff] [blame] | 3066 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 3067 | lr = get_last_request(); |
Luis R. Rodriguez | abc7381 | 2009-07-30 17:38:08 -0700 | [diff] [blame] | 3068 | |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 3069 | if (!reg_dev_ignore_cell_hint(wiphy)) |
| 3070 | reg_num_devs_support_basehint--; |
| 3071 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 3072 | rcu_free_regdom(get_wiphy_regdom(wiphy)); |
Monam Agarwal | 34dd886 | 2014-03-24 00:53:40 +0530 | [diff] [blame] | 3073 | RCU_INIT_POINTER(wiphy->regd, NULL); |
Chris Wright | 0ef9ccd | 2009-04-24 14:09:31 -0700 | [diff] [blame] | 3074 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 3075 | if (lr) |
| 3076 | request_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx); |
Luis R. Rodriguez | 806a9e3 | 2009-02-21 00:04:26 -0500 | [diff] [blame] | 3077 | |
Chris Wright | 0ef9ccd | 2009-04-24 14:09:31 -0700 | [diff] [blame] | 3078 | if (!request_wiphy || request_wiphy != wiphy) |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 3079 | return; |
Chris Wright | 0ef9ccd | 2009-04-24 14:09:31 -0700 | [diff] [blame] | 3080 | |
Johannes Berg | c492db3 | 2012-12-06 16:29:25 +0100 | [diff] [blame] | 3081 | lr->wiphy_idx = WIPHY_IDX_INVALID; |
| 3082 | lr->country_ie_env = ENVIRON_ANY; |
Luis R. Rodriguez | 3f2355c | 2008-11-12 14:22:02 -0800 | [diff] [blame] | 3083 | } |
| 3084 | |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 3085 | static void reg_timeout_work(struct work_struct *work) |
| 3086 | { |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 3087 | 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] | 3088 | rtnl_lock(); |
Ilan peer | c37722b | 2015-03-30 15:15:49 +0300 | [diff] [blame] | 3089 | reg_crda_timeouts++; |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 3090 | restore_regulatory_settings(true); |
Johannes Berg | f77b86d | 2013-06-24 15:43:38 +0200 | [diff] [blame] | 3091 | rtnl_unlock(); |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 3092 | } |
| 3093 | |
Ilan Peer | 174e0cd | 2014-02-23 09:13:01 +0200 | [diff] [blame] | 3094 | /* |
| 3095 | * See http://www.fcc.gov/document/5-ghz-unlicensed-spectrum-unii, for |
| 3096 | * UNII band definitions |
| 3097 | */ |
| 3098 | int cfg80211_get_unii(int freq) |
| 3099 | { |
| 3100 | /* UNII-1 */ |
| 3101 | if (freq >= 5150 && freq <= 5250) |
| 3102 | return 0; |
| 3103 | |
| 3104 | /* UNII-2A */ |
| 3105 | if (freq > 5250 && freq <= 5350) |
| 3106 | return 1; |
| 3107 | |
| 3108 | /* UNII-2B */ |
| 3109 | if (freq > 5350 && freq <= 5470) |
| 3110 | return 2; |
| 3111 | |
| 3112 | /* UNII-2C */ |
| 3113 | if (freq > 5470 && freq <= 5725) |
| 3114 | return 3; |
| 3115 | |
| 3116 | /* UNII-3 */ |
| 3117 | if (freq > 5725 && freq <= 5825) |
| 3118 | return 4; |
| 3119 | |
| 3120 | return -EINVAL; |
| 3121 | } |
| 3122 | |
Ilan Peer | c8866e5 | 2014-02-23 09:13:03 +0200 | [diff] [blame] | 3123 | bool regulatory_indoor_allowed(void) |
| 3124 | { |
| 3125 | return reg_is_indoor; |
| 3126 | } |
| 3127 | |
Uwe Kleine-König | 2fcc9f7 | 2010-06-18 09:38:55 +0200 | [diff] [blame] | 3128 | int __init regulatory_init(void) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 3129 | { |
Luis R. Rodriguez | bcf4f99 | 2009-02-21 00:04:24 -0500 | [diff] [blame] | 3130 | int err = 0; |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 3131 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 3132 | reg_pdev = platform_device_register_simple("regulatory", 0, NULL, 0); |
| 3133 | if (IS_ERR(reg_pdev)) |
| 3134 | return PTR_ERR(reg_pdev); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 3135 | |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 3136 | spin_lock_init(®_requests_lock); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 3137 | spin_lock_init(®_pending_beacons_lock); |
Ilan peer | 0505075 | 2015-03-04 00:32:06 -0500 | [diff] [blame] | 3138 | spin_lock_init(®_indoor_lock); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 3139 | |
Luis R. Rodriguez | 80007ef | 2012-03-23 07:23:31 -0700 | [diff] [blame] | 3140 | reg_regdb_size_check(); |
| 3141 | |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 3142 | rcu_assign_pointer(cfg80211_regdomain, cfg80211_world_regdom); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 3143 | |
Luis R. Rodriguez | 09d989d | 2010-01-29 19:58:57 -0500 | [diff] [blame] | 3144 | user_alpha2[0] = '9'; |
| 3145 | user_alpha2[1] = '7'; |
| 3146 | |
Luis R. Rodriguez | ae9e4b0 | 2009-07-14 20:23:15 -0400 | [diff] [blame] | 3147 | /* We always try to get an update for the static regdomain */ |
Johannes Berg | 458f4f9 | 2012-12-06 15:47:38 +0100 | [diff] [blame] | 3148 | err = regulatory_hint_core(cfg80211_world_regdom->alpha2); |
Luis R. Rodriguez | bcf4f99 | 2009-02-21 00:04:24 -0500 | [diff] [blame] | 3149 | if (err) { |
| 3150 | if (err == -ENOMEM) |
| 3151 | return err; |
| 3152 | /* |
| 3153 | * N.B. kobject_uevent_env() can fail mainly for when we're out |
| 3154 | * memory which is handled and propagated appropriately above |
| 3155 | * but it can also fail during a netlink_broadcast() or during |
| 3156 | * early boot for call_usermodehelper(). For now treat these |
| 3157 | * errors as non-fatal. |
| 3158 | */ |
Joe Perches | e9c0268 | 2010-11-16 19:56:49 -0800 | [diff] [blame] | 3159 | 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] | 3160 | } |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 3161 | |
Luis R. Rodriguez | ae9e4b0 | 2009-07-14 20:23:15 -0400 | [diff] [blame] | 3162 | /* |
| 3163 | * Finally, if the user set the module parameter treat it |
| 3164 | * as a user hint. |
| 3165 | */ |
| 3166 | if (!is_world_regdom(ieee80211_regdom)) |
Luis R. Rodriguez | 57b5ce0 | 2012-07-12 11:49:18 -0700 | [diff] [blame] | 3167 | regulatory_hint_user(ieee80211_regdom, |
| 3168 | NL80211_USER_REG_HINT_USER); |
Luis R. Rodriguez | ae9e4b0 | 2009-07-14 20:23:15 -0400 | [diff] [blame] | 3169 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 3170 | return 0; |
| 3171 | } |
| 3172 | |
Johannes Berg | 1a91931 | 2012-12-03 17:21:11 +0100 | [diff] [blame] | 3173 | void regulatory_exit(void) |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 3174 | { |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 3175 | struct regulatory_request *reg_request, *tmp; |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 3176 | struct reg_beacon *reg_beacon, *btmp; |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 3177 | |
| 3178 | cancel_work_sync(®_work); |
Luis R. Rodriguez | a90c7a3 | 2011-04-05 10:49:04 -0700 | [diff] [blame] | 3179 | cancel_delayed_work_sync(®_timeout); |
Arik Nemtsov | ad932f0 | 2014-11-27 09:44:55 +0200 | [diff] [blame] | 3180 | cancel_delayed_work_sync(®_check_chans); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 3181 | |
Johannes Berg | 9027b14 | 2012-12-03 17:59:24 +0100 | [diff] [blame] | 3182 | /* Lock to suppress warnings */ |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 3183 | rtnl_lock(); |
Johannes Berg | 379b82f | 2012-12-06 15:44:07 +0100 | [diff] [blame] | 3184 | reset_regdomains(true, NULL); |
Johannes Berg | 38fd214 | 2013-05-10 19:17:17 +0200 | [diff] [blame] | 3185 | rtnl_unlock(); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 3186 | |
Luis R. Rodriguez | 58ebacc | 2011-11-08 14:28:06 -0800 | [diff] [blame] | 3187 | dev_set_uevent_suppress(®_pdev->dev, true); |
Johannes Berg | f6037d0 | 2008-10-21 11:01:33 +0200 | [diff] [blame] | 3188 | |
Luis R. Rodriguez | b2e1b30 | 2008-09-09 23:19:48 -0700 | [diff] [blame] | 3189 | platform_device_unregister(reg_pdev); |
Johannes Berg | 734366d | 2008-09-15 10:56:48 +0200 | [diff] [blame] | 3190 | |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 3191 | list_for_each_entry_safe(reg_beacon, btmp, ®_pending_beacons, list) { |
| 3192 | list_del(®_beacon->list); |
| 3193 | kfree(reg_beacon); |
Luis R. Rodriguez | e38f8a7 | 2009-02-21 00:20:39 -0500 | [diff] [blame] | 3194 | } |
| 3195 | |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 3196 | list_for_each_entry_safe(reg_beacon, btmp, ®_beacon_list, list) { |
| 3197 | list_del(®_beacon->list); |
| 3198 | kfree(reg_beacon); |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 3199 | } |
Luis R. Rodriguez | fe33eb3 | 2009-02-21 00:04:30 -0500 | [diff] [blame] | 3200 | |
Johannes Berg | fea9bce | 2012-12-03 17:32:01 +0100 | [diff] [blame] | 3201 | list_for_each_entry_safe(reg_request, tmp, ®_requests_list, list) { |
| 3202 | list_del(®_request->list); |
| 3203 | kfree(reg_request); |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3204 | } |
Johannes Berg | 8318d78 | 2008-01-24 19:38:38 +0100 | [diff] [blame] | 3205 | } |