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0505075360
Previously, the indoor setting configuration assumed that as long as a station interface is connected, the indoor environment setting does not change. However, this assumption is problematic as: - It is possible that a station interface is connected to a mobile AP, e.g., softAP or a P2P GO, where it is possible that both the station and the mobile AP move out of the indoor environment making the indoor setting invalid. In such a case, user space has no way to invalidate the setting. - A station interface disconnection does not necessarily imply that the device is no longer operating in an indoor environment, e.g., it is possible that the station interface is roaming but is still stays indoor. To handle the above, extend the indoor configuration API to allow user space to indicate a change of indoor settings, and allow it to indicate weather it controls the indoor setting, such that: 1. If the user space process explicitly indicates that it is going to control the indoor setting, do not clear the indoor setting internally, unless the socket is released. The user space process should use the NL80211_ATTR_SOCKET_OWNER attribute in the command to state that it is going to control the indoor setting. 2. Reset the indoor setting when restoring the regulatory settings in case it is not owned by a user space process. Based on the above, a user space tool that continuously monitors the indoor settings, i.e., tracking power setting, location etc., can indicate environment changes to the regulatory core. It should be noted that currently user space is the only provided mechanism used to hint to the regulatory core over the indoor/outdoor environment -- while the country IEs do have an environment setting this has been completely ignored by the regulatory core by design for a while now since country IEs typically can contain bogus data. Acked-by: Luis R. Rodriguez <mcgrof@suse.com> Signed-off-by: ArikX Nemtsov <arik@wizery.com> Signed-off-by: Ilan Peer <ilan.peer@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
140 lines
5.7 KiB
C
140 lines
5.7 KiB
C
#ifndef __NET_WIRELESS_REG_H
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#define __NET_WIRELESS_REG_H
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/*
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* Copyright 2008-2011 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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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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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 ieee80211_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 disconneted
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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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#endif /* __NET_WIRELESS_REG_H */
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