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Johannes Bergd3236552009-04-20 14:31:42 +02001#ifndef __NET_REGULATORY_H
2#define __NET_REGULATORY_H
3/*
4 * regulatory support structures
5 *
Luis R. Rodriguezdde88b72011-08-23 15:03:34 -07006 * Copyright 2008-2009 Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Johannes Bergd3236552009-04-20 14:31:42 +02007 *
Luis R. Rodriguezdde88b72011-08-23 15:03:34 -07008 * Permission to use, copy, modify, and/or distribute this software for any
9 * purpose with or without fee is hereby granted, provided that the above
10 * copyright notice and this permission notice appear in all copies.
11 *
12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
Johannes Bergd3236552009-04-20 14:31:42 +020019 */
20
21
22/**
23 * enum environment_cap - Environment parsed from country IE
24 * @ENVIRON_ANY: indicates country IE applies to both indoor and
25 * outdoor operation.
26 * @ENVIRON_INDOOR: indicates country IE applies only to indoor operation
27 * @ENVIRON_OUTDOOR: indicates country IE applies only to outdoor operation
28 */
29enum environment_cap {
30 ENVIRON_ANY,
31 ENVIRON_INDOOR,
32 ENVIRON_OUTDOOR,
33};
34
35/**
36 * struct regulatory_request - used to keep track of regulatory requests
37 *
38 * @wiphy_idx: this is set if this request's initiator is
39 * %REGDOM_SET_BY_COUNTRY_IE or %REGDOM_SET_BY_DRIVER. This
40 * can be used by the wireless core to deal with conflicts
41 * and potentially inform users of which devices specifically
42 * cased the conflicts.
43 * @initiator: indicates who sent this request, could be any of
44 * of those set in nl80211_reg_initiator (%NL80211_REGDOM_SET_BY_*)
45 * @alpha2: the ISO / IEC 3166 alpha2 country code of the requested
46 * regulatory domain. We have a few special codes:
47 * 00 - World regulatory domain
48 * 99 - built by driver but a specific alpha2 cannot be determined
49 * 98 - result of an intersection between two regulatory domains
Luis R. Rodriguez09d989d2010-01-29 19:58:57 -050050 * 97 - regulatory domain has not yet been configured
Johannes Bergd3236552009-04-20 14:31:42 +020051 * @intersect: indicates whether the wireless core should intersect
52 * the requested regulatory domain with the presently set regulatory
53 * domain.
Luis R. Rodriguezb2e253c2010-11-17 21:46:09 -080054 * @processed: indicates whether or not this requests has already been
55 * processed. When the last request is processed it means that the
56 * currently regulatory domain set on cfg80211 is updated from
57 * CRDA and can be used by other regulatory requests. When a
58 * the last request is not yet processed we must yield until it
59 * is processed before processing any new requests.
Johannes Bergd3236552009-04-20 14:31:42 +020060 * @country_ie_checksum: checksum of the last processed and accepted
61 * country IE
62 * @country_ie_env: lets us know if the AP is telling us we are outdoor,
63 * indoor, or if it doesn't matter
64 * @list: used to insert into the reg_requests_list linked list
65 */
66struct regulatory_request {
67 int wiphy_idx;
68 enum nl80211_reg_initiator initiator;
69 char alpha2[2];
70 bool intersect;
Luis R. Rodriguezb2e253c2010-11-17 21:46:09 -080071 bool processed;
Johannes Bergd3236552009-04-20 14:31:42 +020072 enum environment_cap country_ie_env;
73 struct list_head list;
74};
75
76struct ieee80211_freq_range {
77 u32 start_freq_khz;
78 u32 end_freq_khz;
79 u32 max_bandwidth_khz;
80};
81
82struct ieee80211_power_rule {
83 u32 max_antenna_gain;
84 u32 max_eirp;
85};
86
87struct ieee80211_reg_rule {
88 struct ieee80211_freq_range freq_range;
89 struct ieee80211_power_rule power_rule;
90 u32 flags;
91};
92
93struct ieee80211_regdomain {
94 u32 n_reg_rules;
95 char alpha2[2];
96 struct ieee80211_reg_rule reg_rules[];
97};
98
99#define MHZ_TO_KHZ(freq) ((freq) * 1000)
100#define KHZ_TO_MHZ(freq) ((freq) / 1000)
101#define DBI_TO_MBI(gain) ((gain) * 100)
102#define MBI_TO_DBI(gain) ((gain) / 100)
103#define DBM_TO_MBM(gain) ((gain) * 100)
104#define MBM_TO_DBM(gain) ((gain) / 100)
105
106#define REG_RULE(start, end, bw, gain, eirp, reg_flags) \
107{ \
108 .freq_range.start_freq_khz = MHZ_TO_KHZ(start), \
109 .freq_range.end_freq_khz = MHZ_TO_KHZ(end), \
110 .freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw), \
111 .power_rule.max_antenna_gain = DBI_TO_MBI(gain),\
112 .power_rule.max_eirp = DBM_TO_MBM(eirp), \
113 .flags = reg_flags, \
114}
115
116#endif