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: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 857d6476a128..a75fabd18502 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1075,6 +1075,19 @@ 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
  *
  * Monitor interface configuration flags. Note that these must be the bits