1 #ifndef __NET_WIRELESS_REG_H 2 #define __NET_WIRELESS_REG_H 3 4 #include <net/cfg80211.h> 5 6 /* 7 * Copyright 2008-2011 Luis R. Rodriguez <mcgrof@qca.qualcomm.com> 8 * 9 * Permission to use, copy, modify, and/or distribute this software for any 10 * purpose with or without fee is hereby granted, provided that the above 11 * copyright notice and this permission notice appear in all copies. 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 14 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 15 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 16 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 17 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 18 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 19 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 20 */ 21 22 enum ieee80211_regd_source { 23 REGD_SOURCE_INTERNAL_DB, 24 REGD_SOURCE_CRDA, 25 }; 26 27 extern const struct ieee80211_regdomain __rcu *cfg80211_regdomain; 28 29 bool reg_is_valid_request(const char *alpha2); 30 bool is_world_regdom(const char *alpha2); 31 bool reg_supported_dfs_region(enum nl80211_dfs_regions dfs_region); 32 enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy); 33 34 int regulatory_hint_user(const char *alpha2, 35 enum nl80211_user_reg_hint_type user_reg_hint_type); 36 37 /** 38 * regulatory_hint_indoor - hint operation in indoor env. or not 39 * @is_indoor: if true indicates that user space thinks that the 40 * device is operating in an indoor environment. 41 * @portid: the netlink port ID on which the hint was given. 42 */ 43 int regulatory_hint_indoor(bool is_indoor, u32 portid); 44 45 /** 46 * regulatory_netlink_notify - notify on released netlink socket 47 * @portid: the netlink socket port ID 48 */ 49 void regulatory_netlink_notify(u32 portid); 50 51 void wiphy_regulatory_register(struct wiphy *wiphy); 52 void wiphy_regulatory_deregister(struct wiphy *wiphy); 53 54 int __init regulatory_init(void); 55 void regulatory_exit(void); 56 57 int set_regdom(const struct ieee80211_regdomain *rd, 58 enum ieee80211_regd_source regd_src); 59 60 unsigned int reg_get_max_bandwidth(const struct ieee80211_regdomain *rd, 61 const struct ieee80211_reg_rule *rule); 62 63 bool reg_last_request_cell_base(void); 64 const struct ieee80211_regdomain *get_wiphy_regdom(struct wiphy *wiphy); 65 66 /** 67 * regulatory_hint_found_beacon - hints a beacon was found on a channel 68 * @wiphy: the wireless device where the beacon was found on 69 * @beacon_chan: the channel on which the beacon was found on 70 * @gfp: context flags 71 * 72 * This informs the wireless core that a beacon from an AP was found on 73 * the channel provided. This allows the wireless core to make educated 74 * guesses on regulatory to help with world roaming. This is only used for 75 * world roaming -- when we do not know our current location. This is 76 * only useful on channels 12, 13 and 14 on the 2 GHz band as channels 77 * 1-11 are already enabled by the world regulatory domain; and on 78 * non-radar 5 GHz channels. 79 * 80 * Drivers do not need to call this, cfg80211 will do it for after a scan 81 * on a newly found BSS. If you cannot make use of this feature you can 82 * set the wiphy->disable_beacon_hints to true. 83 */ 84 int regulatory_hint_found_beacon(struct wiphy *wiphy, 85 struct ieee80211_channel *beacon_chan, 86 gfp_t gfp); 87 88 /** 89 * regulatory_hint_country_ie - hints a country IE as a regulatory domain 90 * @wiphy: the wireless device giving the hint (used only for reporting 91 * conflicts) 92 * @band: the band on which the country IE was received on. This determines 93 * the band we'll process the country IE channel triplets for. 94 * @country_ie: pointer to the country IE 95 * @country_ie_len: length of the country IE 96 * 97 * We will intersect the rd with the what CRDA tells us should apply 98 * for the alpha2 this country IE belongs to, this prevents APs from 99 * sending us incorrect or outdated information against a country. 100 * 101 * The AP is expected to provide Country IE channel triplets for the 102 * band it is on. It is technically possible for APs to send channel 103 * country IE triplets even for channels outside of the band they are 104 * in but for that they would have to use the regulatory extension 105 * in combination with a triplet but this behaviour is currently 106 * not observed. For this reason if a triplet is seen with channel 107 * information for a band the BSS is not present in it will be ignored. 108 */ 109 void regulatory_hint_country_ie(struct wiphy *wiphy, 110 enum nl80211_band band, 111 const u8 *country_ie, 112 u8 country_ie_len); 113 114 /** 115 * regulatory_hint_disconnect - informs all devices have been disconneted 116 * 117 * Regulotory rules can be enhanced further upon scanning and upon 118 * connection to an AP. These rules become stale if we disconnect 119 * and go to another country, whether or not we suspend and resume. 120 * If we suspend, go to another country and resume we'll automatically 121 * get disconnected shortly after resuming and things will be reset as well. 122 * This routine is a helper to restore regulatory settings to how they were 123 * prior to our first connect attempt. This includes ignoring country IE and 124 * beacon regulatory hints. The ieee80211_regdom module parameter will always 125 * be respected but if a user had set the regulatory domain that will take 126 * precedence. 127 * 128 * Must be called from process context. 129 */ 130 void regulatory_hint_disconnect(void); 131 132 /** 133 * cfg80211_get_unii - get the U-NII band for the frequency 134 * @freq: the frequency for which we want to get the UNII band. 135 136 * Get a value specifying the U-NII band frequency belongs to. 137 * U-NII bands are defined by the FCC in C.F.R 47 part 15. 138 * 139 * Returns -EINVAL if freq is invalid, 0 for UNII-1, 1 for UNII-2A, 140 * 2 for UNII-2B, 3 for UNII-2C and 4 for UNII-3. 141 */ 142 int cfg80211_get_unii(int freq); 143 144 /** 145 * regulatory_indoor_allowed - is indoor operation allowed 146 */ 147 bool regulatory_indoor_allowed(void); 148 149 /* 150 * Grace period to timeout pre-CAC results on the dfs channels. This timeout 151 * value is used for Non-ETSI domain. 152 * TODO: May be make this timeout available through regdb? 153 */ 154 #define REG_PRE_CAC_EXPIRY_GRACE_MS 2000 155 156 /** 157 * regulatory_pre_cac_allowed - if pre-CAC allowed in the current dfs domain 158 * @wiphy: wiphy for which pre-CAC capability is checked. 159 160 * Pre-CAC is allowed only in ETSI domain. 161 */ 162 bool regulatory_pre_cac_allowed(struct wiphy *wiphy); 163 164 /** 165 * regulatory_propagate_dfs_state - Propagate DFS channel state to other wiphys 166 * @wiphy - wiphy on which radar is detected and the event will be propagated 167 * to other available wiphys having the same DFS domain 168 * @chandef - Channel definition of radar detected channel 169 * @dfs_state - DFS channel state to be set 170 * @event - Type of radar event which triggered this DFS state change 171 * 172 * This function should be called with rtnl lock held. 173 */ 174 void regulatory_propagate_dfs_state(struct wiphy *wiphy, 175 struct cfg80211_chan_def *chandef, 176 enum nl80211_dfs_state dfs_state, 177 enum nl80211_radar_event event); 178 179 /** 180 * reg_dfs_domain_same - Checks if both wiphy have same DFS domain configured 181 * @wiphy1 - wiphy it's dfs_region to be checked against that of wiphy2 182 * @wiphy2 - wiphy it's dfs_region to be checked against that of wiphy1 183 */ 184 bool reg_dfs_domain_same(struct wiphy *wiphy1, struct wiphy *wiphy2); 185 186 /** 187 * reg_reload_regdb - reload the regulatory.db firmware file 188 */ 189 int reg_reload_regdb(void); 190 191 extern const u8 shipped_regdb_certs[]; 192 extern unsigned int shipped_regdb_certs_len; 193 extern const u8 extra_regdb_certs[]; 194 extern unsigned int extra_regdb_certs_len; 195 196 #endif /* __NET_WIRELESS_REG_H */ 197