241 lines
10 KiB
C
241 lines
10 KiB
C
|
|
||
|
|
#ifndef __NET_REGULATORY_H
|
||
|
|
#define __NET_REGULATORY_H
|
||
|
|
/*
|
||
|
|
* regulatory support structures
|
||
|
|
*
|
||
|
|
* Copyright 2008-2009 Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
|
||
|
|
* Copyright (C) 2018 Intel Corporation
|
||
|
|
*
|
||
|
|
* 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/ieee80211.h>
|
||
|
|
#include <linux/nl80211.h>
|
||
|
|
#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
|
||
|
|
* 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[3];
|
||
|
|
enum nl80211_dfs_regions dfs_region;
|
||
|
|
bool intersect;
|
||
|
|
bool processed;
|
||
|
|
enum environment_cap country_ie_env;
|
||
|
|
struct list_head list;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* enum ieee80211_regulatory_flags - device regulatory flags
|
||
|
|
*
|
||
|
|
* @REGULATORY_CUSTOM_REG: tells us the driver for this device
|
||
|
|
* has its own custom regulatory domain and cannot identify the
|
||
|
|
* ISO / IEC 3166 alpha2 it belongs to. When this is enabled
|
||
|
|
* we will disregard the first regulatory hint (when the
|
||
|
|
* initiator is %REGDOM_SET_BY_CORE). Drivers that use
|
||
|
|
* wiphy_apply_custom_regulatory() should have this flag set
|
||
|
|
* or the regulatory core will set it for the wiphy.
|
||
|
|
* If you use regulatory_hint() *after* using
|
||
|
|
* wiphy_apply_custom_regulatory() the wireless core will
|
||
|
|
* clear the REGULATORY_CUSTOM_REG for your wiphy as it would be
|
||
|
|
* implied that the device somehow gained knowledge of its region.
|
||
|
|
* @REGULATORY_STRICT_REG: tells us that the wiphy for this device
|
||
|
|
* has regulatory domain that it wishes to be considered as the
|
||
|
|
* superset for regulatory rules. After this device gets its regulatory
|
||
|
|
* domain programmed further regulatory hints shall only be considered
|
||
|
|
* for this device to enhance regulatory compliance, forcing the
|
||
|
|
* device to only possibly use subsets of the original regulatory
|
||
|
|
* rules. For example if channel 13 and 14 are disabled by this
|
||
|
|
* device's regulatory domain no user specified regulatory hint which
|
||
|
|
* has these channels enabled would enable them for this wiphy,
|
||
|
|
* the device's original regulatory domain will be trusted as the
|
||
|
|
* base. You can program the superset of regulatory rules for this
|
||
|
|
* wiphy with regulatory_hint() for cards programmed with an
|
||
|
|
* ISO3166-alpha2 country code. wiphys that use regulatory_hint()
|
||
|
|
* will have their wiphy->regd programmed once the regulatory
|
||
|
|
* domain is set, and all other regulatory hints will be ignored
|
||
|
|
* until their own regulatory domain gets programmed.
|
||
|
|
* @REGULATORY_DISABLE_BEACON_HINTS: enable this if your driver needs to
|
||
|
|
* ensure that passive scan flags and beaconing flags may not be lifted by
|
||
|
|
* cfg80211 due to regulatory beacon hints. For more information on beacon
|
||
|
|
* hints read the documenation for regulatory_hint_found_beacon()
|
||
|
|
* @REGULATORY_COUNTRY_IE_FOLLOW_POWER: for devices that have a preference
|
||
|
|
* that even though they may have programmed their own custom power
|
||
|
|
* setting prior to wiphy registration, they want to ensure their channel
|
||
|
|
* power settings are updated for this connection with the power settings
|
||
|
|
* derived from the regulatory domain. The regulatory domain used will be
|
||
|
|
* based on the ISO3166-alpha2 from country IE provided through
|
||
|
|
* regulatory_hint_country_ie()
|
||
|
|
* @REGULATORY_COUNTRY_IE_IGNORE: for devices that have a preference to ignore
|
||
|
|
* all country IE information processed by the regulatory core. This will
|
||
|
|
* override %REGULATORY_COUNTRY_IE_FOLLOW_POWER as all country IEs will
|
||
|
|
* be ignored.
|
||
|
|
* @REGULATORY_ENABLE_RELAX_NO_IR: for devices that wish to allow the
|
||
|
|
* NO_IR relaxation, which enables transmissions on channels on which
|
||
|
|
* otherwise initiating radiation is not allowed. This will enable the
|
||
|
|
* relaxations enabled under the CFG80211_REG_RELAX_NO_IR configuration
|
||
|
|
* option
|
||
|
|
* @REGULATORY_WIPHY_SELF_MANAGED: for devices that employ wiphy-specific
|
||
|
|
* regdom management. These devices will ignore all regdom changes not
|
||
|
|
* originating from their own wiphy.
|
||
|
|
* A self-managed wiphys only employs regulatory information obtained from
|
||
|
|
* the FW and driver and does not use other cfg80211 sources like
|
||
|
|
* beacon-hints, country-code IEs and hints from other devices on the same
|
||
|
|
* system. Conversely, a self-managed wiphy does not share its regulatory
|
||
|
|
* hints with other devices in the system. If a system contains several
|
||
|
|
* devices, one or more of which are self-managed, there might be
|
||
|
|
* contradictory regulatory settings between them. Usage of flag is
|
||
|
|
* generally discouraged. Only use it if the FW/driver is incompatible
|
||
|
|
* with non-locally originated hints.
|
||
|
|
* This flag is incompatible with the flags: %REGULATORY_CUSTOM_REG,
|
||
|
|
* %REGULATORY_STRICT_REG, %REGULATORY_COUNTRY_IE_FOLLOW_POWER,
|
||
|
|
* %REGULATORY_COUNTRY_IE_IGNORE and %REGULATORY_DISABLE_BEACON_HINTS.
|
||
|
|
* Mixing any of the above flags with this flag will result in a failure
|
||
|
|
* to register the wiphy. This flag implies
|
||
|
|
* %REGULATORY_DISABLE_BEACON_HINTS and %REGULATORY_COUNTRY_IE_IGNORE.
|
||
|
|
*/
|
||
|
|
enum ieee80211_regulatory_flags {
|
||
|
|
REGULATORY_CUSTOM_REG = BIT(0),
|
||
|
|
REGULATORY_STRICT_REG = BIT(1),
|
||
|
|
REGULATORY_DISABLE_BEACON_HINTS = BIT(2),
|
||
|
|
REGULATORY_COUNTRY_IE_FOLLOW_POWER = BIT(3),
|
||
|
|
REGULATORY_COUNTRY_IE_IGNORE = BIT(4),
|
||
|
|
REGULATORY_ENABLE_RELAX_NO_IR = BIT(5),
|
||
|
|
/* reuse bit 6 next time */
|
||
|
|
REGULATORY_WIPHY_SELF_MANAGED = BIT(7),
|
||
|
|
};
|
||
|
|
|
||
|
|
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_wmm_ac - used to store per ac wmm regulatory limitation
|
||
|
|
*
|
||
|
|
* The information provided in this structure is required for QoS
|
||
|
|
* transmit queue configuration. Cf. IEEE 802.11 7.3.2.29.
|
||
|
|
*
|
||
|
|
* @cw_min: minimum contention window [a value of the form
|
||
|
|
* 2^n-1 in the range 1..32767]
|
||
|
|
* @cw_max: maximum contention window [like @cw_min]
|
||
|
|
* @cot: maximum burst time in units of 32 usecs, 0 meaning disabled
|
||
|
|
* @aifsn: arbitration interframe space [0..255]
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
struct ieee80211_wmm_ac {
|
||
|
|
u16 cw_min;
|
||
|
|
u16 cw_max;
|
||
|
|
u16 cot;
|
||
|
|
u8 aifsn;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct ieee80211_wmm_rule {
|
||
|
|
struct ieee80211_wmm_ac client[IEEE80211_NUM_ACS];
|
||
|
|
struct ieee80211_wmm_ac ap[IEEE80211_NUM_ACS];
|
||
|
|
};
|
||
|
|
|
||
|
|
struct ieee80211_reg_rule {
|
||
|
|
struct ieee80211_freq_range freq_range;
|
||
|
|
struct ieee80211_power_rule power_rule;
|
||
|
|
struct ieee80211_wmm_rule wmm_rule;
|
||
|
|
u32 flags;
|
||
|
|
u32 dfs_cac_ms;
|
||
|
|
bool has_wmm;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct ieee80211_regdomain {
|
||
|
|
struct rcu_head rcu_head;
|
||
|
|
u32 n_reg_rules;
|
||
|
|
char alpha2[3];
|
||
|
|
enum nl80211_dfs_regions dfs_region;
|
||
|
|
struct ieee80211_reg_rule reg_rules[];
|
||
|
|
};
|
||
|
|
|
||
|
|
#define REG_RULE_EXT(start, end, bw, gain, eirp, dfs_cac, 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, \
|
||
|
|
.dfs_cac_ms = dfs_cac, \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define REG_RULE(start, end, bw, gain, eirp, reg_flags) \
|
||
|
|
REG_RULE_EXT(start, end, bw, gain, eirp, 0, reg_flags)
|
||
|
|
|
||
|
|
#endif
|