1 #ifndef __NET_WIRELESS_REG_H 2 #define __NET_WIRELESS_REG_H 3 /* 4 * Copyright 2008-2011 Luis R. Rodriguez <mcgrof@qca.qualcomm.com> 5 * 6 * Permission to use, copy, modify, and/or distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 extern const struct ieee80211_regdomain *cfg80211_regdomain; 20 21 bool is_world_regdom(const char *alpha2); 22 bool reg_is_valid_request(const char *alpha2); 23 bool reg_supported_dfs_region(u8 dfs_region); 24 25 int regulatory_hint_user(const char *alpha2, 26 enum nl80211_user_reg_hint_type user_reg_hint_type); 27 28 int reg_device_uevent(struct device *dev, struct kobj_uevent_env *env); 29 void wiphy_regulatory_register(struct wiphy *wiphy); 30 void wiphy_regulatory_deregister(struct wiphy *wiphy); 31 32 int __init regulatory_init(void); 33 void regulatory_exit(void); 34 35 int set_regdom(const struct ieee80211_regdomain *rd); 36 37 bool reg_last_request_cell_base(void); 38 39 /** 40 * regulatory_hint_found_beacon - hints a beacon was found on a channel 41 * @wiphy: the wireless device where the beacon was found on 42 * @beacon_chan: the channel on which the beacon was found on 43 * @gfp: context flags 44 * 45 * This informs the wireless core that a beacon from an AP was found on 46 * the channel provided. This allows the wireless core to make educated 47 * guesses on regulatory to help with world roaming. This is only used for 48 * world roaming -- when we do not know our current location. This is 49 * only useful on channels 12, 13 and 14 on the 2 GHz band as channels 50 * 1-11 are already enabled by the world regulatory domain; and on 51 * non-radar 5 GHz channels. 52 * 53 * Drivers do not need to call this, cfg80211 will do it for after a scan 54 * on a newly found BSS. If you cannot make use of this feature you can 55 * set the wiphy->disable_beacon_hints to true. 56 */ 57 int regulatory_hint_found_beacon(struct wiphy *wiphy, 58 struct ieee80211_channel *beacon_chan, 59 gfp_t gfp); 60 61 /** 62 * regulatory_hint_11d - hints a country IE as a regulatory domain 63 * @wiphy: the wireless device giving the hint (used only for reporting 64 * conflicts) 65 * @band: the band on which the country IE was received on. This determines 66 * the band we'll process the country IE channel triplets for. 67 * @country_ie: pointer to the country IE 68 * @country_ie_len: length of the country IE 69 * 70 * We will intersect the rd with the what CRDA tells us should apply 71 * for the alpha2 this country IE belongs to, this prevents APs from 72 * sending us incorrect or outdated information against a country. 73 * 74 * The AP is expected to provide Country IE channel triplets for the 75 * band it is on. It is technically possible for APs to send channel 76 * country IE triplets even for channels outside of the band they are 77 * in but for that they would have to use the regulatory extension 78 * in combination with a triplet but this behaviour is currently 79 * not observed. For this reason if a triplet is seen with channel 80 * information for a band the BSS is not present in it will be ignored. 81 */ 82 void regulatory_hint_11d(struct wiphy *wiphy, 83 enum ieee80211_band band, 84 u8 *country_ie, 85 u8 country_ie_len); 86 87 /** 88 * regulatory_hint_disconnect - informs all devices have been disconneted 89 * 90 * Regulotory rules can be enhanced further upon scanning and upon 91 * connection to an AP. These rules become stale if we disconnect 92 * and go to another country, whether or not we suspend and resume. 93 * If we suspend, go to another country and resume we'll automatically 94 * get disconnected shortly after resuming and things will be reset as well. 95 * This routine is a helper to restore regulatory settings to how they were 96 * prior to our first connect attempt. This includes ignoring country IE and 97 * beacon regulatory hints. The ieee80211_regdom module parameter will always 98 * be respected but if a user had set the regulatory domain that will take 99 * precedence. 100 * 101 * Must be called from process context. 102 */ 103 void regulatory_hint_disconnect(void); 104 105 #endif /* __NET_WIRELESS_REG_H */ 106