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