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authorJohannes Berg <johannes@sipsolutions.net>2009-07-01 21:27:00 +0200
committerJohn W. Linville <linville@tuxdriver.com>2009-07-10 15:01:52 -0400
commit8990646d2fafeacfacba4a4b1073a4216662089a (patch)
tree357fcf85f7e982b9f06aaac9e7c3468c6af0333f /net/wireless
parent9930380f0bd8405fa6a51d644f3de88c30666519 (diff)
cfg80211: implement get_wireless_stats
By dropping the noise reporting, we can implement wireless stats in cfg80211. We also make the handler return NULL if we have no information, which is possible thanks to the recent wext change. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/wext-compat.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 3a5f999703f..226cf860907 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -1156,3 +1156,62 @@ int cfg80211_wext_giwrate(struct net_device *dev,
return 0;
}
EXPORT_SYMBOL_GPL(cfg80211_wext_giwrate);
+
+/* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
+struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
+{
+ struct wireless_dev *wdev = dev->ieee80211_ptr;
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
+ /* we are under RTNL - globally locked - so can use static structs */
+ static struct iw_statistics wstats;
+ static struct station_info sinfo;
+ u8 *addr;
+
+ if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
+ return NULL;
+
+ if (!rdev->ops->get_station)
+ return NULL;
+
+ addr = wdev->wext.connect.bssid;
+ if (!addr)
+ return NULL;
+
+ if (rdev->ops->get_station(&rdev->wiphy, dev, addr, &sinfo))
+ return NULL;
+
+ memset(&wstats, 0, sizeof(wstats));
+
+ switch (rdev->wiphy.signal_type) {
+ case CFG80211_SIGNAL_TYPE_MBM:
+ if (sinfo.filled & STATION_INFO_SIGNAL) {
+ int sig = sinfo.signal;
+ wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
+ wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
+ wstats.qual.updated |= IW_QUAL_DBM;
+ wstats.qual.level = sig;
+ if (sig < -110)
+ sig = -110;
+ else if (sig > -40)
+ sig = -40;
+ wstats.qual.qual = sig + 110;
+ break;
+ }
+ case CFG80211_SIGNAL_TYPE_UNSPEC:
+ if (sinfo.filled & STATION_INFO_SIGNAL) {
+ wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
+ wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
+ wstats.qual.level = sinfo.signal;
+ wstats.qual.qual = sinfo.signal;
+ break;
+ }
+ default:
+ wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
+ wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
+ }
+
+ wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
+
+ return &wstats;
+}
+EXPORT_SYMBOL_GPL(cfg80211_wireless_stats);