LXR linux/include/net/regulatory.h

   1#ifndef __NET_REGULATORY_H
   2#define __NET_REGULATORY_H
   3/*
   4 * regulatory support structures
   5 *
   6 * Copyright 2008-2009  Luis R. Rodriguez <lrodriguez@atheros.com>
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License version 2 as
  10 * published by the Free Software Foundation.
  11 */
  12
  13
  14/**
  15 * enum environment_cap - Environment parsed from country IE
  16 * @ENVIRON_ANY: indicates country IE applies to both indoor and
  17 *      outdoor operation.
  18 * @ENVIRON_INDOOR: indicates country IE applies only to indoor operation
  19 * @ENVIRON_OUTDOOR: indicates country IE applies only to outdoor operation
  20 */
  21enum environment_cap {
  22        ENVIRON_ANY,
  23        ENVIRON_INDOOR,
  24        ENVIRON_OUTDOOR,
  25};
  26
  27/**
  28 * struct regulatory_request - used to keep track of regulatory requests
  29 *
  30 * @wiphy_idx: this is set if this request's initiator is
  31 *      %REGDOM_SET_BY_COUNTRY_IE or %REGDOM_SET_BY_DRIVER. This
  32 *      can be used by the wireless core to deal with conflicts
  33 *      and potentially inform users of which devices specifically
  34 *      cased the conflicts.
  35 * @initiator: indicates who sent this request, could be any of
  36 *      of those set in nl80211_reg_initiator (%NL80211_REGDOM_SET_BY_*)
  37 * @alpha2: the ISO / IEC 3166 alpha2 country code of the requested
  38 *      regulatory domain. We have a few special codes:
  39 *      00 - World regulatory domain
  40 *      99 - built by driver but a specific alpha2 cannot be determined
  41 *      98 - result of an intersection between two regulatory domains
  42 *      97 - regulatory domain has not yet been configured
  43 * @intersect: indicates whether the wireless core should intersect
  44 *      the requested regulatory domain with the presently set regulatory
  45 *      domain.
  46 * @processed: indicates whether or not this requests has already been
  47 *      processed. When the last request is processed it means that the
  48 *      currently regulatory domain set on cfg80211 is updated from
  49 *      CRDA and can be used by other regulatory requests. When a
  50 *      the last request is not yet processed we must yield until it
  51 *      is processed before processing any new requests.
  52 * @country_ie_checksum: checksum of the last processed and accepted
  53 *      country IE
  54 * @country_ie_env: lets us know if the AP is telling us we are outdoor,
  55 *      indoor, or if it doesn't matter
  56 * @list: used to insert into the reg_requests_list linked list
  57 */
  58struct regulatory_request {
  59        int wiphy_idx;
  60        enum nl80211_reg_initiator initiator;
  61        char alpha2[2];
  62        bool intersect;
  63        bool processed;
  64        enum environment_cap country_ie_env;
  65        struct list_head list;
  66};
  67
  68struct ieee80211_freq_range {
  69        u32 start_freq_khz;
  70        u32 end_freq_khz;
  71        u32 max_bandwidth_khz;
  72};
  73
  74struct ieee80211_power_rule {
  75        u32 max_antenna_gain;
  76        u32 max_eirp;
  77};
  78
  79struct ieee80211_reg_rule {
  80        struct ieee80211_freq_range freq_range;
  81        struct ieee80211_power_rule power_rule;
  82        u32 flags;
  83};
  84
  85struct ieee80211_regdomain {
  86        u32 n_reg_rules;
  87        char alpha2[2];
  88        struct ieee80211_reg_rule reg_rules[];
  89};
  90
  91#define MHZ_TO_KHZ(freq) ((freq) * 1000)
  92#define KHZ_TO_MHZ(freq) ((freq) / 1000)
  93#define DBI_TO_MBI(gain) ((gain) * 100)
  94#define MBI_TO_DBI(gain) ((gain) / 100)
  95#define DBM_TO_MBM(gain) ((gain) * 100)
  96#define MBM_TO_DBM(gain) ((gain) / 100)
  97
  98#define REG_RULE(start, end, bw, gain, eirp, reg_flags) \
  99{                                                       \
 100        .freq_range.start_freq_khz = MHZ_TO_KHZ(start), \
 101        .freq_range.end_freq_khz = MHZ_TO_KHZ(end),     \
 102        .freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw), \
 103        .power_rule.max_antenna_gain = DBI_TO_MBI(gain),\
 104        .power_rule.max_eirp = DBM_TO_MBM(eirp),        \
 105        .flags = reg_flags,                             \
 106}
 107
 108#endif
 109