mirror of
https://github.com/torvalds/linux.git
synced 2024-11-14 16:12:02 +00:00
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>
132 lines
4.7 KiB
C
132 lines
4.7 KiB
C
#ifndef __NET_REGULATORY_H
|
|
#define __NET_REGULATORY_H
|
|
/*
|
|
* regulatory support structures
|
|
*
|
|
* Copyright 2008-2009 Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#include <linux/rcupdate.h>
|
|
|
|
/**
|
|
* enum environment_cap - Environment parsed from country IE
|
|
* @ENVIRON_ANY: indicates country IE applies to both indoor and
|
|
* outdoor operation.
|
|
* @ENVIRON_INDOOR: indicates country IE applies only to indoor operation
|
|
* @ENVIRON_OUTDOOR: indicates country IE applies only to outdoor operation
|
|
*/
|
|
enum environment_cap {
|
|
ENVIRON_ANY,
|
|
ENVIRON_INDOOR,
|
|
ENVIRON_OUTDOOR,
|
|
};
|
|
|
|
/**
|
|
* struct regulatory_request - used to keep track of regulatory requests
|
|
*
|
|
* @rcu_head: RCU head struct used to free the request
|
|
* @wiphy_idx: this is set if this request's initiator is
|
|
* %REGDOM_SET_BY_COUNTRY_IE or %REGDOM_SET_BY_DRIVER. This
|
|
* can be used by the wireless core to deal with conflicts
|
|
* and potentially inform users of which devices specifically
|
|
* cased the conflicts.
|
|
* @initiator: indicates who sent this request, could be any of
|
|
* of those set in nl80211_reg_initiator (%NL80211_REGDOM_SET_BY_*)
|
|
* @alpha2: the ISO / IEC 3166 alpha2 country code of the requested
|
|
* regulatory domain. We have a few special codes:
|
|
* 00 - World regulatory domain
|
|
* 99 - built by driver but a specific alpha2 cannot be determined
|
|
* 98 - result of an intersection between two regulatory domains
|
|
* 97 - regulatory domain has not yet been configured
|
|
* @dfs_region: If CRDA responded with a regulatory domain that requires
|
|
* DFS master operation on a known DFS region (NL80211_DFS_*),
|
|
* dfs_region represents that region. Drivers can use this and the
|
|
* @alpha2 to adjust their device's DFS parameters as required.
|
|
* @user_reg_hint_type: if the @initiator was of type
|
|
* %NL80211_REGDOM_SET_BY_USER, this classifies the type
|
|
* of hint passed. This could be any of the %NL80211_USER_REG_HINT_*
|
|
* types.
|
|
* @intersect: indicates whether the wireless core should intersect
|
|
* the requested regulatory domain with the presently set regulatory
|
|
* domain.
|
|
* @processed: indicates whether or not this requests has already been
|
|
* processed. When the last request is processed it means that the
|
|
* currently regulatory domain set on cfg80211 is updated from
|
|
* CRDA and can be used by other regulatory requests. When a
|
|
* the last request is not yet processed we must yield until it
|
|
* is processed before processing any new requests.
|
|
* @country_ie_checksum: checksum of the last processed and accepted
|
|
* country IE
|
|
* @country_ie_env: lets us know if the AP is telling us we are outdoor,
|
|
* indoor, or if it doesn't matter
|
|
* @list: used to insert into the reg_requests_list linked list
|
|
*/
|
|
struct regulatory_request {
|
|
struct rcu_head rcu_head;
|
|
int wiphy_idx;
|
|
enum nl80211_reg_initiator initiator;
|
|
enum nl80211_user_reg_hint_type user_reg_hint_type;
|
|
char alpha2[2];
|
|
u8 dfs_region;
|
|
bool intersect;
|
|
bool processed;
|
|
enum environment_cap country_ie_env;
|
|
struct list_head list;
|
|
};
|
|
|
|
struct ieee80211_freq_range {
|
|
u32 start_freq_khz;
|
|
u32 end_freq_khz;
|
|
u32 max_bandwidth_khz;
|
|
};
|
|
|
|
struct ieee80211_power_rule {
|
|
u32 max_antenna_gain;
|
|
u32 max_eirp;
|
|
};
|
|
|
|
struct ieee80211_reg_rule {
|
|
struct ieee80211_freq_range freq_range;
|
|
struct ieee80211_power_rule power_rule;
|
|
u32 flags;
|
|
};
|
|
|
|
struct ieee80211_regdomain {
|
|
struct rcu_head rcu_head;
|
|
u32 n_reg_rules;
|
|
char alpha2[2];
|
|
u8 dfs_region;
|
|
struct ieee80211_reg_rule reg_rules[];
|
|
};
|
|
|
|
#define MHZ_TO_KHZ(freq) ((freq) * 1000)
|
|
#define KHZ_TO_MHZ(freq) ((freq) / 1000)
|
|
#define DBI_TO_MBI(gain) ((gain) * 100)
|
|
#define MBI_TO_DBI(gain) ((gain) / 100)
|
|
#define DBM_TO_MBM(gain) ((gain) * 100)
|
|
#define MBM_TO_DBM(gain) ((gain) / 100)
|
|
|
|
#define REG_RULE(start, end, bw, gain, eirp, reg_flags) \
|
|
{ \
|
|
.freq_range.start_freq_khz = MHZ_TO_KHZ(start), \
|
|
.freq_range.end_freq_khz = MHZ_TO_KHZ(end), \
|
|
.freq_range.max_bandwidth_khz = MHZ_TO_KHZ(bw), \
|
|
.power_rule.max_antenna_gain = DBI_TO_MBI(gain),\
|
|
.power_rule.max_eirp = DBM_TO_MBM(eirp), \
|
|
.flags = reg_flags, \
|
|
}
|
|
|
|
#endif
|