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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
Johannes Berg458f4f92012-12-06 15:47:38 +010021#include <linux/rcupdate.h>
Johannes Bergd3236552009-04-20 14:31:42 +020022
23/**
24 * enum environment_cap - Environment parsed from country IE
25 * @ENVIRON_ANY: indicates country IE applies to both indoor and
26 * outdoor operation.
27 * @ENVIRON_INDOOR: indicates country IE applies only to indoor operation
28 * @ENVIRON_OUTDOOR: indicates country IE applies only to outdoor operation
29 */
30enum environment_cap {
31 ENVIRON_ANY,
32 ENVIRON_INDOOR,
33 ENVIRON_OUTDOOR,
34};
35
36/**
37 * struct regulatory_request - used to keep track of regulatory requests
38 *
Johannes Bergc492db32012-12-06 16:29:25 +010039 * @rcu_head: RCU head struct used to free the request
Johannes Bergd3236552009-04-20 14:31:42 +020040 * @wiphy_idx: this is set if this request's initiator is
41 * %REGDOM_SET_BY_COUNTRY_IE or %REGDOM_SET_BY_DRIVER. This
42 * can be used by the wireless core to deal with conflicts
43 * and potentially inform users of which devices specifically
44 * cased the conflicts.
45 * @initiator: indicates who sent this request, could be any of
46 * of those set in nl80211_reg_initiator (%NL80211_REGDOM_SET_BY_*)
47 * @alpha2: the ISO / IEC 3166 alpha2 country code of the requested
48 * regulatory domain. We have a few special codes:
49 * 00 - World regulatory domain
50 * 99 - built by driver but a specific alpha2 cannot be determined
51 * 98 - result of an intersection between two regulatory domains
Luis R. Rodriguez09d989d2010-01-29 19:58:57 -050052 * 97 - regulatory domain has not yet been configured
Luis R. Rodriguezb68e6b32011-10-11 10:59:03 -070053 * @dfs_region: If CRDA responded with a regulatory domain that requires
54 * DFS master operation on a known DFS region (NL80211_DFS_*),
55 * dfs_region represents that region. Drivers can use this and the
56 * @alpha2 to adjust their device's DFS parameters as required.
Luis R. Rodriguez57b5ce02012-07-12 11:49:18 -070057 * @user_reg_hint_type: if the @initiator was of type
58 * %NL80211_REGDOM_SET_BY_USER, this classifies the type
59 * of hint passed. This could be any of the %NL80211_USER_REG_HINT_*
60 * types.
Johannes Bergd3236552009-04-20 14:31:42 +020061 * @intersect: indicates whether the wireless core should intersect
62 * the requested regulatory domain with the presently set regulatory
63 * domain.
Luis R. Rodriguezb2e253c2010-11-17 21:46:09 -080064 * @processed: indicates whether or not this requests has already been
65 * processed. When the last request is processed it means that the
66 * currently regulatory domain set on cfg80211 is updated from
67 * CRDA and can be used by other regulatory requests. When a
68 * the last request is not yet processed we must yield until it
69 * is processed before processing any new requests.
Johannes Bergd3236552009-04-20 14:31:42 +020070 * @country_ie_checksum: checksum of the last processed and accepted
71 * country IE
72 * @country_ie_env: lets us know if the AP is telling us we are outdoor,
73 * indoor, or if it doesn't matter
74 * @list: used to insert into the reg_requests_list linked list
75 */
76struct regulatory_request {
Johannes Bergc492db32012-12-06 16:29:25 +010077 struct rcu_head rcu_head;
Johannes Bergd3236552009-04-20 14:31:42 +020078 int wiphy_idx;
79 enum nl80211_reg_initiator initiator;
Luis R. Rodriguez57b5ce02012-07-12 11:49:18 -070080 enum nl80211_user_reg_hint_type user_reg_hint_type;
Johannes Bergd3236552009-04-20 14:31:42 +020081 char alpha2[2];
Luis R. Rodriguezb68e6b32011-10-11 10:59:03 -070082 u8 dfs_region;
Johannes Bergd3236552009-04-20 14:31:42 +020083 bool intersect;
Luis R. Rodriguezb2e253c2010-11-17 21:46:09 -080084 bool processed;
Johannes Bergd3236552009-04-20 14:31:42 +020085 enum environment_cap country_ie_env;
86 struct list_head list;
87};
88
89struct ieee80211_freq_range {
90 u32 start_freq_khz;
91 u32 end_freq_khz;
92 u32 max_bandwidth_khz;
93};
94
95struct ieee80211_power_rule {
96 u32 max_antenna_gain;
97 u32 max_eirp;
98};
99
100struct ieee80211_reg_rule {
101 struct ieee80211_freq_range freq_range;
102 struct ieee80211_power_rule power_rule;
103 u32 flags;
104};
105
106struct ieee80211_regdomain {
Johannes Berg458f4f92012-12-06 15:47:38 +0100107 struct rcu_head rcu_head;
Johannes Bergd3236552009-04-20 14:31:42 +0200108 u32 n_reg_rules;
109 char alpha2[2];
Luis R. Rodriguez8b60b072011-10-11 10:59:02 -0700110 u8 dfs_region;
Johannes Bergd3236552009-04-20 14:31:42 +0200111 struct ieee80211_reg_rule reg_rules[];
112};
113
114#define MHZ_TO_KHZ(freq) ((freq) * 1000)
115#define KHZ_TO_MHZ(freq) ((freq) / 1000)
116#define DBI_TO_MBI(gain) ((gain) * 100)
117#define MBI_TO_DBI(gain) ((gain) / 100)
118#define DBM_TO_MBM(gain) ((gain) * 100)
119#define MBM_TO_DBM(gain) ((gain) / 100)
120
121#define REG_RULE(start, end, bw, gain, eirp, reg_flags) \
122{ \
123 .freq_range.start_freq_khz = MHZ_TO_KHZ(start), \
124 .freq_range.end_freq_khz = MHZ_TO_KHZ(end), \
125 .freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw), \
126 .power_rule.max_antenna_gain = DBI_TO_MBI(gain),\
127 .power_rule.max_eirp = DBM_TO_MBM(eirp), \
128 .flags = reg_flags, \
129}
130
131#endif