#ifndef __NET_WIRELESS_REG_H
#define __NET_WIRELESS_REG_H
#include <net/cfg80211.h>
/*
* Copyright 2008-2011 Luis R. Rodriguez <[email protected]>
* Copyright (C) 2019, 2023 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.
*/
enum ieee80211_regd_source {
REGD_SOURCE_INTERNAL_DB,
REGD_SOURCE_CRDA,
REGD_SOURCE_CACHED,
};
extern const struct ieee80211_regdomain __rcu *cfg80211_regdomain;
bool reg_is_valid_request(const char *alpha2);
bool is_world_regdom(const char *alpha2);
bool reg_supported_dfs_region(enum nl80211_dfs_regions dfs_region);
enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy);
int regulatory_hint_user(const char *alpha2,
enum nl80211_user_reg_hint_type user_reg_hint_type);
/**
* regulatory_hint_indoor - hint operation in indoor env. or not
* @is_indoor: if true indicates that user space thinks that the
* device is operating in an indoor environment.
* @portid: the netlink port ID on which the hint was given.
*/
void regulatory_hint_indoor(bool is_indoor, u32 portid);
/**
* regulatory_netlink_notify - notify on released netlink socket
* @portid: the netlink socket port ID
*/
void regulatory_netlink_notify(u32 portid);
void wiphy_regulatory_register(struct wiphy *wiphy);
void wiphy_regulatory_deregister(struct wiphy *wiphy);
int __init regulatory_init(void);
void regulatory_exit(void);
int set_regdom(const struct ieee80211_regdomain *rd,
enum ieee80211_regd_source regd_src);
unsigned int reg_get_max_bandwidth(const struct ieee80211_regdomain *rd,
const struct ieee80211_reg_rule *rule);
bool reg_last_request_cell_base(void);
/**
* regulatory_hint_found_beacon - hints a beacon was found on a channel
* @wiphy: the wireless device where the beacon was found on
* @beacon_chan: the channel on which the beacon was found on
* @gfp: context flags
*
* This informs the wireless core that a beacon from an AP was found on
* the channel provided. This allows the wireless core to make educated
* guesses on regulatory to help with world roaming. This is only used for
* world roaming -- when we do not know our current location. This is
* only useful on channels 12, 13 and 14 on the 2 GHz band as channels
* 1-11 are already enabled by the world regulatory domain; and on
* non-radar 5 GHz channels.
*
* Drivers do not need to call this, cfg80211 will do it for after a scan
* on a newly found BSS. If you cannot make use of this feature you can
* set the wiphy->disable_beacon_hints to true.
*/
void regulatory_hint_found_beacon(struct wiphy *wiphy,
struct ieee80211_channel *beacon_chan,
gfp_t gfp);
/**
* regulatory_hint_country_ie - hints a country IE as a regulatory domain
* @wiphy: the wireless device giving the hint (used only for reporting
* conflicts)
* @band: the band on which the country IE was received on. This determines
* the band we'll process the country IE channel triplets for.
* @country_ie: pointer to the country IE
* @country_ie_len: length of the country IE
*
* We will intersect the rd with the what CRDA tells us should apply
* for the alpha2 this country IE belongs to, this prevents APs from
* sending us incorrect or outdated information against a country.
*
* The AP is expected to provide Country IE channel triplets for the
* band it is on. It is technically possible for APs to send channel
* country IE triplets even for channels outside of the band they are
* in but for that they would have to use the regulatory extension
* in combination with a triplet but this behaviour is currently
* not observed. For this reason if a triplet is seen with channel
* information for a band the BSS is not present in it will be ignored.
*/
void regulatory_hint_country_ie(struct wiphy *wiphy,
enum nl80211_band band,
const u8 *country_ie,
u8 country_ie_len);
/**
* regulatory_hint_disconnect - informs all devices have been disconnected
*
* Regulotory rules can be enhanced further upon scanning and upon
* connection to an AP. These rules become stale if we disconnect
* and go to another country, whether or not we suspend and resume.
* If we suspend, go to another country and resume we'll automatically
* get disconnected shortly after resuming and things will be reset as well.
* This routine is a helper to restore regulatory settings to how they were
* prior to our first connect attempt. This includes ignoring country IE and
* beacon regulatory hints. The ieee80211_regdom module parameter will always
* be respected but if a user had set the regulatory domain that will take
* precedence.
*
* Must be called from process context.
*/
void regulatory_hint_disconnect(void);
/**
* cfg80211_get_unii - get the U-NII band for the frequency
* @freq: the frequency for which we want to get the UNII band.
*
* Get a value specifying the U-NII band frequency belongs to.
* U-NII bands are defined by the FCC in C.F.R 47 part 15.
*
* Return: -EINVAL if freq is invalid, 0 for UNII-1, 1 for UNII-2A,
* 2 for UNII-2B, 3 for UNII-2C and 4 for UNII-3.
*/
int cfg80211_get_unii(int freq);
/**
* regulatory_indoor_allowed - is indoor operation allowed
* Return: %true if indoor operation is allowed, %false otherwise
*/
bool regulatory_indoor_allowed(void);
/*
* Grace period to timeout pre-CAC results on the dfs channels. This timeout
* value is used for Non-ETSI domain.
* TODO: May be make this timeout available through regdb?
*/
#define REG_PRE_CAC_EXPIRY_GRACE_MS 2000
/**
* regulatory_propagate_dfs_state - Propagate DFS channel state to other wiphys
* @wiphy: wiphy on which radar is detected and the event will be propagated
* to other available wiphys having the same DFS domain
* @chandef: Channel definition of radar detected channel
* @dfs_state: DFS channel state to be set
* @event: Type of radar event which triggered this DFS state change
*
* This function should be called with rtnl lock held.
*/
void regulatory_propagate_dfs_state(struct wiphy *wiphy,
struct cfg80211_chan_def *chandef,
enum nl80211_dfs_state dfs_state,
enum nl80211_radar_event event);
/**
* reg_dfs_domain_same - Checks if both wiphy have same DFS domain configured
* @wiphy1: wiphy it's dfs_region to be checked against that of wiphy2
* @wiphy2: wiphy it's dfs_region to be checked against that of wiphy1
* Return: %true if both wiphys have the same DFS domain, %false otherwise
*/
bool reg_dfs_domain_same(struct wiphy *wiphy1, struct wiphy *wiphy2);
/**
* reg_reload_regdb - reload the regulatory.db firmware file
* Return: 0 for success, an error code otherwise
*/
int reg_reload_regdb(void);
/**
* reg_check_channels - schedule regulatory enforcement
*/
void reg_check_channels(void);
extern const u8 shipped_regdb_certs[];
extern unsigned int shipped_regdb_certs_len;
extern const u8 extra_regdb_certs[];
extern unsigned int extra_regdb_certs_len;
#endif /* __NET_WIRELESS_REG_H */
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