cfg80211: fix wext stats

Instead of using the wext BSSID which may be NULL if
you haven't explicitly set one, we should instead use
the current_bss pointer -- if that's NULL we aren't
connected anyway. Fixes missing signal quality output
reported to me internally at Intel.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 9 insertions, 4 deletions

diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 5d0176338539..aa80c0c4efd4 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -1209,7 +1209,7 @@ struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
         /* we are under RTNL - globally locked - so can use static structs */
         static struct iw_statistics wstats;
         static struct station_info sinfo;
-        u8 *addr;
+        u8 bssid[ETH_ALEN];
 
         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
                 return NULL;
@@ -1217,11 +1217,16 @@ struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
         if (!rdev->ops->get_station)
                 return NULL;
 
-        addr = wdev->wext.connect.bssid;
-        if (!addr)
+        /* Grab BSSID of current BSS, if any */
+        wdev_lock(wdev);
+        if (!wdev->current_bss) {
+                wdev_unlock(wdev);
                 return NULL;
+        }
+        memcpy(bssid, wdev->current_bss->pub.bssid, ETH_ALEN);
+        wdev_unlock(wdev);
 
-        if (rdev->ops->get_station(&rdev->wiphy, dev, addr, &sinfo))
+        if (rdev->ops->get_station(&rdev->wiphy, dev, bssid, &sinfo))
                 return NULL;
 
         memset(&wstats, 0, sizeof(wstats));