From: Antonio Quartulli antonio@open-mesh.com
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 --- include/net/cfg80211.h | 13 +++++++++++++ net/wireless/util.c | 18 ++++++++++++++++++ 2 files changed, 31 insertions(+)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 394189e..5917919 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, u8 *mac_addr, + struct station_info *sinfo); + +/** * enum monitor_flags - monitor flags * * Monitor interface configuration flags. Note that these must be the bits diff --git a/net/wireless/util.c b/net/wireless/util.c index 8c61d5c..6380e55 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -1545,6 +1545,24 @@ 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, 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) =