[PATCHv4 3/3] cfg80211: implement cfg80211_get_station cfg80211 API
From: Antonio Quartulli <hidden>
Date: 2014-05-19 19:53:21
Also in:
batman
Subsystem:
802.11 (including cfg80211/nl80211), the rest · Maintainers:
Johannes Berg, Linus Torvalds
From: Antonio Quartulli <redacted> 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 <redacted> --- 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 857d647..a75fabd 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
diff --git a/net/wireless/rdev-ops.h b/net/wireless/rdev-ops.h
index 00cdf73..d95bbe3 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 fa61ac9..728f1c0 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) =
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1.8.5.5