#ifndef __NET_WIRELESS_REG_H
  #define __NET_WIRELESS_REG_H
  /*
   * Copyright 2008-2011	Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
   *
   * 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.
   */
  
  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);
  
  int reg_device_uevent(struct device *dev, struct kobj_uevent_env *env);
  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);
  
  bool reg_last_request_cell_base(void);
  
  /**
   * 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 ieee80211_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);
  
  #endif  /* __NET_WIRELESS_REG_H */