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Commit 7406353d authored by Antonio Quartulli's avatar Antonio Quartulli Committed by Johannes Berg
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cfg80211: implement cfg80211_get_station cfg80211 API 



Implement and export the new cfg80211_get_station() API.
This utility can be used by other kernel modules to obtain
detailed information about a given wireless station.

It will be in particular useful to batman-adv which will
implement a wireless rate based metric.

Signed-off-by: default avatarAntonio Quartulli <antonio@open-mesh.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent cca674d4

include/net/cfg80211.h

+13 −0
Original line number Diff line number Diff line
@@ -1074,6 +1074,19 @@ struct station_info { 
	 */

};



/**

 * cfg80211_get_station - retrieve information about a given station

 * @dev: the device where the station is supposed to be connected to

 * @mac_addr: the mac address of the station of interest

 * @sinfo: pointer to the structure to fill with the information

 *

 * Returns 0 on success and sinfo is filled with the available information

 * otherwise returns a negative error code and the content of sinfo has to be

 * considered undefined.

 */

int cfg80211_get_station(struct net_device *dev, const u8 *mac_addr,

			 struct station_info *sinfo);



/**

 * enum monitor_flags - monitor flags

 *

net/wireless/rdev-ops.h

+1 −1
Original line number Diff line number Diff line
@@ -199,7 +199,7 @@ static inline int rdev_change_station(struct cfg80211_registered_device *rdev, 
}



static inline int rdev_get_station(struct cfg80211_registered_device *rdev,

				   struct net_device *dev, u8 *mac,

				   struct net_device *dev, const u8 *mac,

				   struct station_info *sinfo)

{

	int ret;

net/wireless/util.c

+18 −0
Original line number Diff line number Diff line
@@ -1546,6 +1546,24 @@ unsigned int ieee80211_get_num_supported_channels(struct wiphy *wiphy) 
}

EXPORT_SYMBOL(ieee80211_get_num_supported_channels);



int cfg80211_get_station(struct net_device *dev, const u8 *mac_addr,

			 struct station_info *sinfo)

{

	struct cfg80211_registered_device *rdev;

	struct wireless_dev *wdev;



	wdev = dev->ieee80211_ptr;

	if (!wdev)

		return -EOPNOTSUPP;



	rdev = wiphy_to_rdev(wdev->wiphy);

	if (!rdev->ops->get_station)

		return -EOPNOTSUPP;



	return rdev_get_station(rdev, dev, mac_addr, sinfo);

}

EXPORT_SYMBOL(cfg80211_get_station);



/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */

/* Ethernet-II snap header (RFC1042 for most EtherTypes) */

const unsigned char rfc1042_header[] __aligned(2) =