c492db370c
This will allow making freq_reg_info() lock-free. Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
131 lines
4.7 KiB
C
131 lines
4.7 KiB
C
#ifndef __NET_REGULATORY_H
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#define __NET_REGULATORY_H
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/*
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* regulatory support structures
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*
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* Copyright 2008-2009 Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <linux/rcupdate.h>
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/**
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* enum environment_cap - Environment parsed from country IE
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* @ENVIRON_ANY: indicates country IE applies to both indoor and
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* outdoor operation.
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* @ENVIRON_INDOOR: indicates country IE applies only to indoor operation
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* @ENVIRON_OUTDOOR: indicates country IE applies only to outdoor operation
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*/
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enum environment_cap {
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ENVIRON_ANY,
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ENVIRON_INDOOR,
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ENVIRON_OUTDOOR,
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};
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/**
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* struct regulatory_request - used to keep track of regulatory requests
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*
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* @rcu_head: RCU head struct used to free the request
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* @wiphy_idx: this is set if this request's initiator is
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* %REGDOM_SET_BY_COUNTRY_IE or %REGDOM_SET_BY_DRIVER. This
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* can be used by the wireless core to deal with conflicts
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* and potentially inform users of which devices specifically
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* cased the conflicts.
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* @initiator: indicates who sent this request, could be any of
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* of those set in nl80211_reg_initiator (%NL80211_REGDOM_SET_BY_*)
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* @alpha2: the ISO / IEC 3166 alpha2 country code of the requested
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* regulatory domain. We have a few special codes:
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* 00 - World regulatory domain
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* 99 - built by driver but a specific alpha2 cannot be determined
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* 98 - result of an intersection between two regulatory domains
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* 97 - regulatory domain has not yet been configured
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* @dfs_region: If CRDA responded with a regulatory domain that requires
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* DFS master operation on a known DFS region (NL80211_DFS_*),
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* dfs_region represents that region. Drivers can use this and the
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* @alpha2 to adjust their device's DFS parameters as required.
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* @user_reg_hint_type: if the @initiator was of type
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* %NL80211_REGDOM_SET_BY_USER, this classifies the type
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* of hint passed. This could be any of the %NL80211_USER_REG_HINT_*
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* types.
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* @intersect: indicates whether the wireless core should intersect
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* the requested regulatory domain with the presently set regulatory
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* domain.
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* @processed: indicates whether or not this requests has already been
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* processed. When the last request is processed it means that the
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* currently regulatory domain set on cfg80211 is updated from
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* CRDA and can be used by other regulatory requests. When a
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* the last request is not yet processed we must yield until it
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* is processed before processing any new requests.
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* @country_ie_checksum: checksum of the last processed and accepted
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* country IE
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* @country_ie_env: lets us know if the AP is telling us we are outdoor,
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* indoor, or if it doesn't matter
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* @list: used to insert into the reg_requests_list linked list
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*/
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struct regulatory_request {
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struct rcu_head rcu_head;
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int wiphy_idx;
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enum nl80211_reg_initiator initiator;
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enum nl80211_user_reg_hint_type user_reg_hint_type;
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char alpha2[2];
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u8 dfs_region;
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bool intersect;
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bool processed;
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enum environment_cap country_ie_env;
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struct list_head list;
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};
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struct ieee80211_freq_range {
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u32 start_freq_khz;
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u32 end_freq_khz;
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u32 max_bandwidth_khz;
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};
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struct ieee80211_power_rule {
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u32 max_antenna_gain;
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u32 max_eirp;
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};
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struct ieee80211_reg_rule {
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struct ieee80211_freq_range freq_range;
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struct ieee80211_power_rule power_rule;
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u32 flags;
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};
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struct ieee80211_regdomain {
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struct rcu_head rcu_head;
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u32 n_reg_rules;
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char alpha2[2];
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u8 dfs_region;
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struct ieee80211_reg_rule reg_rules[];
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};
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#define MHZ_TO_KHZ(freq) ((freq) * 1000)
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#define KHZ_TO_MHZ(freq) ((freq) / 1000)
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#define DBI_TO_MBI(gain) ((gain) * 100)
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#define MBI_TO_DBI(gain) ((gain) / 100)
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#define DBM_TO_MBM(gain) ((gain) * 100)
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#define MBM_TO_DBM(gain) ((gain) / 100)
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#define REG_RULE(start, end, bw, gain, eirp, reg_flags) \
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{ \
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.freq_range.start_freq_khz = MHZ_TO_KHZ(start), \
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.freq_range.end_freq_khz = MHZ_TO_KHZ(end), \
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.freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw), \
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.power_rule.max_antenna_gain = DBI_TO_MBI(gain),\
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.power_rule.max_eirp = DBM_TO_MBM(eirp), \
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.flags = reg_flags, \
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}
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#endif
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