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>

diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 5d01763..aa80c0c 100644 (file)
--- 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));