1 files changed, 59 insertions, 0 deletions

diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 3a5f999703f1..226cf8609079 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);