1 #ifndef __NET_WIRELESS_REG_H 2 #define __NET_WIRELESS_REG_H 3 4 extern const struct ieee80211_regdomain *cfg80211_regdomain; 5 6 bool is_world_regdom(const char *alpha2); 7 bool reg_is_valid_request(const char *alpha2); 8 9 int regulatory_hint_user(const char *alpha2); 10 11 int reg_device_uevent(struct device *dev, struct kobj_uevent_env *env); 12 void reg_device_remove(struct wiphy *wiphy); 13 14 int __init regulatory_init(void); 15 void regulatory_exit(void); 16 17 int set_regdom(const struct ieee80211_regdomain *rd); 18 19 void regulatory_update(struct wiphy *wiphy, enum nl80211_reg_initiator setby); 20 21 /** 22 * regulatory_hint_found_beacon - hints a beacon was found on a channel 23 * @wiphy: the wireless device where the beacon was found on 24 * @beacon_chan: the channel on which the beacon was found on 25 * @gfp: context flags 26 * 27 * This informs the wireless core that a beacon from an AP was found on 28 * the channel provided. This allows the wireless core to make educated 29 * guesses on regulatory to help with world roaming. This is only used for 30 * world roaming -- when we do not know our current location. This is 31 * only useful on channels 12, 13 and 14 on the 2 GHz band as channels 32 * 1-11 are already enabled by the world regulatory domain; and on 33 * non-radar 5 GHz channels. 34 * 35 * Drivers do not need to call this, cfg80211 will do it for after a scan 36 * on a newly found BSS. If you cannot make use of this feature you can 37 * set the wiphy->disable_beacon_hints to true. 38 */ 39 int regulatory_hint_found_beacon(struct wiphy *wiphy, 40 struct ieee80211_channel *beacon_chan, 41 gfp_t gfp); 42 43 /** 44 * regulatory_hint_11d - hints a country IE as a regulatory domain 45 * @wiphy: the wireless device giving the hint (used only for reporting 46 * conflicts) 47 * @band: the band on which the country IE was received on. This determines 48 * the band we'll process the country IE channel triplets for. 49 * @country_ie: pointer to the country IE 50 * @country_ie_len: length of the country IE 51 * 52 * We will intersect the rd with the what CRDA tells us should apply 53 * for the alpha2 this country IE belongs to, this prevents APs from 54 * sending us incorrect or outdated information against a country. 55 * 56 * The AP is expected to provide Country IE channel triplets for the 57 * band it is on. It is technically possible for APs to send channel 58 * country IE triplets even for channels outside of the band they are 59 * in but for that they would have to use the regulatory extension 60 * in combination with a triplet but this behaviour is currently 61 * not observed. For this reason if a triplet is seen with channel 62 * information for a band the BSS is not present in it will be ignored. 63 */ 64 void regulatory_hint_11d(struct wiphy *wiphy, 65 enum ieee80211_band band, 66 u8 *country_ie, 67 u8 country_ie_len); 68 69 /** 70 * regulatory_hint_disconnect - informs all devices have been disconneted 71 * 72 * Regulotory rules can be enhanced further upon scanning and upon 73 * connection to an AP. These rules become stale if we disconnect 74 * and go to another country, whether or not we suspend and resume. 75 * If we suspend, go to another country and resume we'll automatically 76 * get disconnected shortly after resuming and things will be reset as well. 77 * This routine is a helper to restore regulatory settings to how they were 78 * prior to our first connect attempt. This includes ignoring country IE and 79 * beacon regulatory hints. The ieee80211_regdom module parameter will always 80 * be respected but if a user had set the regulatory domain that will take 81 * precedence. 82 * 83 * Must be called from process context. 84 */ 85 void regulatory_hint_disconnect(void); 86 87 #endif /* __NET_WIRELESS_REG_H */ 88