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Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -07001#ifndef __NET_WIRELESS_REG_H
2#define __NET_WIRELESS_REG_H
Luis R. Rodriguez3b77d5e2011-12-20 12:23:38 -08003/*
4 * Copyright 2008-2011 Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
5 *
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -070018
Johannes Berg458f4f92012-12-06 15:47:38 +010019extern const struct ieee80211_regdomain __rcu *cfg80211_regdomain;
Luis R. Rodriguezf1303472009-01-30 09:26:42 -080020
Luis R. Rodrigueze4387682013-11-05 09:18:01 -080021bool reg_is_valid_request(const char *alpha2);
Johannes Berga3d2eaf2008-09-15 11:10:52 +020022bool is_world_regdom(const char *alpha2);
Luis R. Rodriguez4c7d3982013-11-13 18:54:02 +010023bool reg_supported_dfs_region(enum nl80211_dfs_regions dfs_region);
Luis R. Rodriguez6c474792013-11-25 20:56:09 +010024enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy);
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -070025
Luis R. Rodriguez57b5ce02012-07-12 11:49:18 -070026int regulatory_hint_user(const char *alpha2,
27 enum nl80211_user_reg_hint_type user_reg_hint_type);
Luis R. Rodriguezfe33eb32009-02-21 00:04:30 -050028
Luis R. Rodriguez57b5ce02012-07-12 11:49:18 -070029void wiphy_regulatory_register(struct wiphy *wiphy);
Luis R. Rodriguezbfead082012-07-12 11:49:19 -070030void wiphy_regulatory_deregister(struct wiphy *wiphy);
Luis R. Rodriguez3f2355c2008-11-12 14:22:02 -080031
Uwe Kleine-König2fcc9f72010-06-18 09:38:55 +020032int __init regulatory_init(void);
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -070033void regulatory_exit(void);
34
Johannes Berga3d2eaf2008-09-15 11:10:52 +020035int set_regdom(const struct ieee80211_regdomain *rd);
Janusz Dziedzic97524822014-01-30 09:52:20 +010036unsigned int reg_get_max_bandwidth(const struct ieee80211_regdomain *rd,
37 const struct ieee80211_reg_rule *rule);
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -070038
Luis R. Rodriguez57b5ce02012-07-12 11:49:18 -070039bool reg_last_request_cell_base(void);
Sven Neumanneac03e32011-08-30 23:38:53 +020040
Johannes Bergcf032682008-10-21 09:42:38 +020041/**
Luis R. Rodrigueze38f8a72009-02-21 00:20:39 -050042 * regulatory_hint_found_beacon - hints a beacon was found on a channel
43 * @wiphy: the wireless device where the beacon was found on
44 * @beacon_chan: the channel on which the beacon was found on
45 * @gfp: context flags
46 *
47 * This informs the wireless core that a beacon from an AP was found on
48 * the channel provided. This allows the wireless core to make educated
49 * guesses on regulatory to help with world roaming. This is only used for
50 * world roaming -- when we do not know our current location. This is
51 * only useful on channels 12, 13 and 14 on the 2 GHz band as channels
52 * 1-11 are already enabled by the world regulatory domain; and on
53 * non-radar 5 GHz channels.
54 *
55 * Drivers do not need to call this, cfg80211 will do it for after a scan
Luis R. Rodriguez37184242009-07-30 17:43:48 -070056 * on a newly found BSS. If you cannot make use of this feature you can
57 * set the wiphy->disable_beacon_hints to true.
Luis R. Rodrigueze38f8a72009-02-21 00:20:39 -050058 */
59int regulatory_hint_found_beacon(struct wiphy *wiphy,
Johannes Berg1a919312012-12-03 17:21:11 +010060 struct ieee80211_channel *beacon_chan,
61 gfp_t gfp);
Luis R. Rodrigueze38f8a72009-02-21 00:20:39 -050062
Luis R. Rodriguez8b19e6c2009-07-30 17:38:09 -070063/**
Luis R. Rodriguez789fd032013-10-04 18:07:24 -070064 * regulatory_hint_country_ie - hints a country IE as a regulatory domain
Luis R. Rodriguez8b19e6c2009-07-30 17:38:09 -070065 * @wiphy: the wireless device giving the hint (used only for reporting
66 * conflicts)
Luis R. Rodriguez84920e32010-01-14 20:08:20 -050067 * @band: the band on which the country IE was received on. This determines
68 * the band we'll process the country IE channel triplets for.
Luis R. Rodriguez8b19e6c2009-07-30 17:38:09 -070069 * @country_ie: pointer to the country IE
70 * @country_ie_len: length of the country IE
71 *
72 * We will intersect the rd with the what CRDA tells us should apply
73 * for the alpha2 this country IE belongs to, this prevents APs from
74 * sending us incorrect or outdated information against a country.
Luis R. Rodriguez84920e32010-01-14 20:08:20 -050075 *
76 * The AP is expected to provide Country IE channel triplets for the
77 * band it is on. It is technically possible for APs to send channel
78 * country IE triplets even for channels outside of the band they are
79 * in but for that they would have to use the regulatory extension
80 * in combination with a triplet but this behaviour is currently
81 * not observed. For this reason if a triplet is seen with channel
82 * information for a band the BSS is not present in it will be ignored.
Luis R. Rodriguez8b19e6c2009-07-30 17:38:09 -070083 */
Luis R. Rodriguez789fd032013-10-04 18:07:24 -070084void regulatory_hint_country_ie(struct wiphy *wiphy,
Luis R. Rodriguez84920e32010-01-14 20:08:20 -050085 enum ieee80211_band band,
Johannes Berg9caf0362012-11-29 01:25:20 +010086 const u8 *country_ie,
Luis R. Rodriguez8b19e6c2009-07-30 17:38:09 -070087 u8 country_ie_len);
88
Luis R. Rodriguez09d989d2010-01-29 19:58:57 -050089/**
90 * regulatory_hint_disconnect - informs all devices have been disconneted
91 *
92 * Regulotory rules can be enhanced further upon scanning and upon
93 * connection to an AP. These rules become stale if we disconnect
94 * and go to another country, whether or not we suspend and resume.
95 * If we suspend, go to another country and resume we'll automatically
96 * get disconnected shortly after resuming and things will be reset as well.
97 * This routine is a helper to restore regulatory settings to how they were
98 * prior to our first connect attempt. This includes ignoring country IE and
99 * beacon regulatory hints. The ieee80211_regdom module parameter will always
100 * be respected but if a user had set the regulatory domain that will take
101 * precedence.
102 *
103 * Must be called from process context.
104 */
105void regulatory_hint_disconnect(void);
106
Ilan Peer174e0cd2014-02-23 09:13:01 +0200107/**
108 * cfg80211_get_unii - get the U-NII band for the frequency
109 * @freq: the frequency for which we want to get the UNII band.
110
111 * Get a value specifying the U-NII band frequency belongs to.
112 * U-NII bands are defined by the FCC in C.F.R 47 part 15.
113 *
114 * Returns -EINVAL if freq is invalid, 0 for UNII-1, 1 for UNII-2A,
115 * 2 for UNII-2B, 3 for UNII-2C and 4 for UNII-3.
116 */
117int cfg80211_get_unii(int freq);
118
Luis R. Rodriguezb2e1b302008-09-09 23:19:48 -0700119#endif /* __NET_WIRELESS_REG_H */