blob: c4695d07af23fd3852e8398787205d46a7b0d54c [file] [log] [blame]
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -07001#ifndef __NET_WIRELESS_REG_H
2#define __NET_WIRELESS_REG_H
3
Luis R. Rodriguezf1303472009-01-30 09:26:42 -08004extern const struct ieee80211_regdomain *cfg80211_regdomain;
5
Johannes Berga3d2eaf2008-09-15 11:10:52 +02006bool is_world_regdom(const char *alpha2);
7bool reg_is_valid_request(const char *alpha2);
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -07008
Luis R. Rodriguezfe33eb32009-02-21 00:04:30 -05009int regulatory_hint_user(const char *alpha2);
10
Luis R. Rodriguez3f2355c2008-11-12 14:22:02 -080011void reg_device_remove(struct wiphy *wiphy);
12
Uwe Kleine-König2fcc9f72010-06-18 09:38:55 +020013int __init regulatory_init(void);
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -070014void regulatory_exit(void);
15
Johannes Berga3d2eaf2008-09-15 11:10:52 +020016int set_regdom(const struct ieee80211_regdomain *rd);
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -070017
Johannes Bergcf032682008-10-21 09:42:38 +020018/**
Luis R. Rodrigueze38f8a72009-02-21 00:20:39 -050019 * regulatory_hint_found_beacon - hints a beacon was found on a channel
20 * @wiphy: the wireless device where the beacon was found on
21 * @beacon_chan: the channel on which the beacon was found on
22 * @gfp: context flags
23 *
24 * This informs the wireless core that a beacon from an AP was found on
25 * the channel provided. This allows the wireless core to make educated
26 * guesses on regulatory to help with world roaming. This is only used for
27 * world roaming -- when we do not know our current location. This is
28 * only useful on channels 12, 13 and 14 on the 2 GHz band as channels
29 * 1-11 are already enabled by the world regulatory domain; and on
30 * non-radar 5 GHz channels.
31 *
32 * Drivers do not need to call this, cfg80211 will do it for after a scan
Luis R. Rodriguez37184242009-07-30 17:43:48 -070033 * on a newly found BSS. If you cannot make use of this feature you can
34 * set the wiphy->disable_beacon_hints to true.
Luis R. Rodrigueze38f8a72009-02-21 00:20:39 -050035 */
36int regulatory_hint_found_beacon(struct wiphy *wiphy,
37 struct ieee80211_channel *beacon_chan,
38 gfp_t gfp);
39
Luis R. Rodriguez8b19e6c2009-07-30 17:38:09 -070040/**
41 * regulatory_hint_11d - hints a country IE as a regulatory domain
42 * @wiphy: the wireless device giving the hint (used only for reporting
43 * conflicts)
Luis R. Rodriguez84920e32010-01-14 20:08:20 -050044 * @band: the band on which the country IE was received on. This determines
45 * the band we'll process the country IE channel triplets for.
Luis R. Rodriguez8b19e6c2009-07-30 17:38:09 -070046 * @country_ie: pointer to the country IE
47 * @country_ie_len: length of the country IE
48 *
49 * We will intersect the rd with the what CRDA tells us should apply
50 * for the alpha2 this country IE belongs to, this prevents APs from
51 * sending us incorrect or outdated information against a country.
Luis R. Rodriguez84920e32010-01-14 20:08:20 -050052 *
53 * The AP is expected to provide Country IE channel triplets for the
54 * band it is on. It is technically possible for APs to send channel
55 * country IE triplets even for channels outside of the band they are
56 * in but for that they would have to use the regulatory extension
57 * in combination with a triplet but this behaviour is currently
58 * not observed. For this reason if a triplet is seen with channel
59 * information for a band the BSS is not present in it will be ignored.
Luis R. Rodriguez8b19e6c2009-07-30 17:38:09 -070060 */
61void regulatory_hint_11d(struct wiphy *wiphy,
Luis R. Rodriguez84920e32010-01-14 20:08:20 -050062 enum ieee80211_band band,
Luis R. Rodriguez8b19e6c2009-07-30 17:38:09 -070063 u8 *country_ie,
64 u8 country_ie_len);
65
Luis R. Rodriguez09d989d2010-01-29 19:58:57 -050066/**
67 * regulatory_hint_disconnect - informs all devices have been disconneted
68 *
69 * Regulotory rules can be enhanced further upon scanning and upon
70 * connection to an AP. These rules become stale if we disconnect
71 * and go to another country, whether or not we suspend and resume.
72 * If we suspend, go to another country and resume we'll automatically
73 * get disconnected shortly after resuming and things will be reset as well.
74 * This routine is a helper to restore regulatory settings to how they were
75 * prior to our first connect attempt. This includes ignoring country IE and
76 * beacon regulatory hints. The ieee80211_regdom module parameter will always
77 * be respected but if a user had set the regulatory domain that will take
78 * precedence.
79 *
80 * Must be called from process context.
81 */
82void regulatory_hint_disconnect(void);
83
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -070084#endif /* __NET_WIRELESS_REG_H */