#ifndef __NET_WIRELESS_REG_H #define __NET_WIRELESS_REG_H #include /* * Copyright 2008-2011 Luis R. Rodriguez * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ enum ieee80211_regd_source { REGD_SOURCE_INTERNAL_DB, REGD_SOURCE_CRDA, }; extern const struct ieee80211_regdomain __rcu *cfg80211_regdomain; bool reg_is_valid_request(const char *alpha2); bool is_world_regdom(const char *alpha2); bool reg_supported_dfs_region(enum nl80211_dfs_regions dfs_region); enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy); int regulatory_hint_user(const char *alpha2, enum nl80211_user_reg_hint_type user_reg_hint_type); /** * regulatory_hint_indoor - hint operation in indoor env. or not * @is_indoor: if true indicates that user space thinks that the * device is operating in an indoor environment. * @portid: the netlink port ID on which the hint was given. */ int regulatory_hint_indoor(bool is_indoor, u32 portid); /** * regulatory_netlink_notify - notify on released netlink socket * @portid: the netlink socket port ID */ void regulatory_netlink_notify(u32 portid); void wiphy_regulatory_register(struct wiphy *wiphy); void wiphy_regulatory_deregister(struct wiphy *wiphy); int __init regulatory_init(void); void regulatory_exit(void); int set_regdom(const struct ieee80211_regdomain *rd, enum ieee80211_regd_source regd_src); unsigned int reg_get_max_bandwidth(const struct ieee80211_regdomain *rd, const struct ieee80211_reg_rule *rule); bool reg_last_request_cell_base(void); const struct ieee80211_regdomain *get_wiphy_regdom(struct wiphy *wiphy); /** * regulatory_hint_found_beacon - hints a beacon was found on a channel * @wiphy: the wireless device where the beacon was found on * @beacon_chan: the channel on which the beacon was found on * @gfp: context flags * * This informs the wireless core that a beacon from an AP was found on * the channel provided. This allows the wireless core to make educated * guesses on regulatory to help with world roaming. This is only used for * world roaming -- when we do not know our current location. This is * only useful on channels 12, 13 and 14 on the 2 GHz band as channels * 1-11 are already enabled by the world regulatory domain; and on * non-radar 5 GHz channels. * * Drivers do not need to call this, cfg80211 will do it for after a scan * on a newly found BSS. If you cannot make use of this feature you can * set the wiphy->disable_beacon_hints to true. */ int regulatory_hint_found_beacon(struct wiphy *wiphy, struct ieee80211_channel *beacon_chan, gfp_t gfp); /** * regulatory_hint_country_ie - hints a country IE as a regulatory domain * @wiphy: the wireless device giving the hint (used only for reporting * conflicts) * @band: the band on which the country IE was received on. This determines * the band we'll process the country IE channel triplets for. * @country_ie: pointer to the country IE * @country_ie_len: length of the country IE * * We will intersect the rd with the what CRDA tells us should apply * for the alpha2 this country IE belongs to, this prevents APs from * sending us incorrect or outdated information against a country. * * The AP is expected to provide Country IE channel triplets for the * band it is on. It is technically possible for APs to send channel * country IE triplets even for channels outside of the band they are * in but for that they would have to use the regulatory extension * in combination with a triplet but this behaviour is currently * not observed. For this reason if a triplet is seen with channel * information for a band the BSS is not present in it will be ignored. */ void regulatory_hint_country_ie(struct wiphy *wiphy, enum nl80211_band band, const u8 *country_ie, u8 country_ie_len); /** * regulatory_hint_disconnect - informs all devices have been disconneted * * Regulotory rules can be enhanced further upon scanning and upon * connection to an AP. These rules become stale if we disconnect * and go to another country, whether or not we suspend and resume. * If we suspend, go to another country and resume we'll automatically * get disconnected shortly after resuming and things will be reset as well. * This routine is a helper to restore regulatory settings to how they were * prior to our first connect attempt. This includes ignoring country IE and * beacon regulatory hints. The ieee80211_regdom module parameter will always * be respected but if a user had set the regulatory domain that will take * precedence. * * Must be called from process context. */ void regulatory_hint_disconnect(void); /** * cfg80211_get_unii - get the U-NII band for the frequency * @freq: the frequency for which we want to get the UNII band. * Get a value specifying the U-NII band frequency belongs to. * U-NII bands are defined by the FCC in C.F.R 47 part 15. * * Returns -EINVAL if freq is invalid, 0 for UNII-1, 1 for UNII-2A, * 2 for UNII-2B, 3 for UNII-2C and 4 for UNII-3. */ int cfg80211_get_unii(int freq); /** * regulatory_indoor_allowed - is indoor operation allowed */ bool regulatory_indoor_allowed(void); /* * Grace period to timeout pre-CAC results on the dfs channels. This timeout * value is used for Non-ETSI domain. * TODO: May be make this timeout available through regdb? */ #define REG_PRE_CAC_EXPIRY_GRACE_MS 2000 /** * regulatory_pre_cac_allowed - if pre-CAC allowed in the current dfs domain * @wiphy: wiphy for which pre-CAC capability is checked. * Pre-CAC is allowed only in ETSI domain. */ bool regulatory_pre_cac_allowed(struct wiphy *wiphy); /** * regulatory_propagate_dfs_state - Propagate DFS channel state to other wiphys * @wiphy - wiphy on which radar is detected and the event will be propagated * to other available wiphys having the same DFS domain * @chandef - Channel definition of radar detected channel * @dfs_state - DFS channel state to be set * @event - Type of radar event which triggered this DFS state change * * This function should be called with rtnl lock held. */ void regulatory_propagate_dfs_state(struct wiphy *wiphy, struct cfg80211_chan_def *chandef, enum nl80211_dfs_state dfs_state, enum nl80211_radar_event event); /** * reg_dfs_domain_same - Checks if both wiphy have same DFS domain configured * @wiphy1 - wiphy it's dfs_region to be checked against that of wiphy2 * @wiphy2 - wiphy it's dfs_region to be checked against that of wiphy1 */ bool reg_dfs_domain_same(struct wiphy *wiphy1, struct wiphy *wiphy2); /** * reg_reload_regdb - reload the regulatory.db firmware file */ int reg_reload_regdb(void); extern const u8 shipped_regdb_certs[]; extern unsigned int shipped_regdb_certs_len; extern const u8 extra_regdb_certs[]; extern unsigned int extra_regdb_certs_len; #endif /* __NET_WIRELESS_REG_H */