1 #ifndef __NET_REGULATORY_H 2 #define __NET_REGULATORY_H 3 /* 4 * regulatory support structures 5 * 6 * Copyright 2008-2009 Luis R. Rodriguez <mcgrof@qca.qualcomm.com> 7 * 8 * 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. 19 */ 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 */ 29 enum 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 50 * 97 - regulatory domain has not yet been configured 51 * @dfs_region: If CRDA responded with a regulatory domain that requires 52 * DFS master operation on a known DFS region (NL80211_DFS_*), 53 * dfs_region represents that region. Drivers can use this and the 54 * @alpha2 to adjust their device's DFS parameters as required. 55 * @user_reg_hint_type: if the @initiator was of type 56 * %NL80211_REGDOM_SET_BY_USER, this classifies the type 57 * of hint passed. This could be any of the %NL80211_USER_REG_HINT_* 58 * types. 59 * @intersect: indicates whether the wireless core should intersect 60 * the requested regulatory domain with the presently set regulatory 61 * domain. 62 * @processed: indicates whether or not this requests has already been 63 * processed. When the last request is processed it means that the 64 * currently regulatory domain set on cfg80211 is updated from 65 * CRDA and can be used by other regulatory requests. When a 66 * the last request is not yet processed we must yield until it 67 * is processed before processing any new requests. 68 * @country_ie_checksum: checksum of the last processed and accepted 69 * country IE 70 * @country_ie_env: lets us know if the AP is telling us we are outdoor, 71 * indoor, or if it doesn't matter 72 * @list: used to insert into the reg_requests_list linked list 73 */ 74 struct regulatory_request { 75 int wiphy_idx; 76 enum nl80211_reg_initiator initiator; 77 enum nl80211_user_reg_hint_type user_reg_hint_type; 78 char alpha2[2]; 79 u8 dfs_region; 80 bool intersect; 81 bool processed; 82 enum environment_cap country_ie_env; 83 struct list_head list; 84 }; 85 86 struct ieee80211_freq_range { 87 u32 start_freq_khz; 88 u32 end_freq_khz; 89 u32 max_bandwidth_khz; 90 }; 91 92 struct ieee80211_power_rule { 93 u32 max_antenna_gain; 94 u32 max_eirp; 95 }; 96 97 struct ieee80211_reg_rule { 98 struct ieee80211_freq_range freq_range; 99 struct ieee80211_power_rule power_rule; 100 u32 flags; 101 }; 102 103 struct ieee80211_regdomain { 104 u32 n_reg_rules; 105 char alpha2[2]; 106 u8 dfs_region; 107 struct ieee80211_reg_rule reg_rules[]; 108 }; 109 110 #define MHZ_TO_KHZ(freq) ((freq) * 1000) 111 #define KHZ_TO_MHZ(freq) ((freq) / 1000) 112 #define DBI_TO_MBI(gain) ((gain) * 100) 113 #define MBI_TO_DBI(gain) ((gain) / 100) 114 #define DBM_TO_MBM(gain) ((gain) * 100) 115 #define MBM_TO_DBM(gain) ((gain) / 100) 116 117 #define REG_RULE(start, end, bw, gain, eirp, reg_flags) \ 118 { \ 119 .freq_range.start_freq_khz = MHZ_TO_KHZ(start), \ 120 .freq_range.end_freq_khz = MHZ_TO_KHZ(end), \ 121 .freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw), \ 122 .power_rule.max_antenna_gain = DBI_TO_MBI(gain),\ 123 .power_rule.max_eirp = DBM_TO_MBM(eirp), \ 124 .flags = reg_flags, \ 125 } 126 127 #endif 128