From 7406353d43c8e2faf478721e87aeb6f2f9685de0 Mon Sep 17 00:00:00 2001 From: Antonio Quartulli Date: Mon, 19 May 2014 21:53:21 +0200 Subject: [PATCH] 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 Signed-off-by: Johannes Berg --- include/net/cfg80211.h | 13 +++++++++++++ net/wireless/rdev-ops.h | 2 +- net/wireless/util.c | 18 ++++++++++++++++++ 3 files changed, 32 insertions(+), 1 deletion(-) 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 @@ -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 * diff --git a/net/wireless/rdev-ops.h b/net/wireless/rdev-ops.h index 00cdf73ba6c4..d95bbe348138 100644 --- a/net/wireless/rdev-ops.h +++ b/net/wireless/rdev-ops.h @@ -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; diff --git a/net/wireless/util.c b/net/wireless/util.c index fa61ac9c9b26..728f1c0dc70d 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -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) =