net/wireless/reg.h

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  55  * sending us incorrect or outdated information against a country.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