forked from luck/tmp_suning_uos_patched
9752482083
In case we will get regulatory request with rule
where max_bandwidth_khz is set to 0 handle this
case as a special one.
If max_bandwidth_khz == 0 we should calculate maximum
available bandwidth base on all frequency contiguous rules.
In case we need auto calculation we just have to set:
country PL: DFS-ETSI
(2402 - 2482 @ 40), (N/A, 20)
(5170 - 5250 @ AUTO), (N/A, 20)
(5250 - 5330 @ AUTO), (N/A, 20), DFS
(5490 - 5710 @ 80), (N/A, 27), DFS
This mean we will calculate maximum bw for rules where
AUTO (N/A) were set, 160MHz (5330 - 5170) in example above.
So we will get:
(5170 - 5250 @ 160), (N/A, 20)
(5250 - 5330 @ 160), (N/A, 20), DFS
In other case:
country FR: DFS-ETSI
(2402 - 2482 @ 40), (N/A, 20)
(5170 - 5250 @ AUTO), (N/A, 20)
(5250 - 5330 @ 80), (N/A, 20), DFS
(5490 - 5710 @ 80), (N/A, 27), DFS
We will get 80MHz (5250 - 5170):
(5170 - 5250 @ 80), (N/A, 20)
(5250 - 5330 @ 80), (N/A, 20), DFS
Base on this calculations we will set correct channel
bandwidth flags (eg. IEEE80211_CHAN_NO_80MHZ).
We don't need any changes in CRDA or internal regulatory.
Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
[extend nl80211 description a bit, fix typo]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
109 lines
4.7 KiB
C
109 lines
4.7 KiB
C
#ifndef __NET_WIRELESS_REG_H
|
|
#define __NET_WIRELESS_REG_H
|
|
/*
|
|
* Copyright 2008-2011 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.
|
|
*/
|
|
|
|
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);
|
|
|
|
int reg_device_uevent(struct device *dev, struct kobj_uevent_env *env);
|
|
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);
|
|
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.
|
|
*/
|
|
int 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 ieee80211_band band,
|
|
const u8 *country_ie,
|
|
u8 country_ie_len);
|
|
|
|
/**
|
|
* regulatory_hint_disconnect - informs all devices have been disconneted
|
|
*
|
|
* 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);
|
|
|
|
#endif /* __NET_WIRELESS_REG_H */
|