From: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Date: Mon, 23 Apr 2012 16:30:32 +0000 (-0700)
Subject: mac80211: check for non-managed interface
X-Git-Tag: firefly_0821_release~3680^2~2787^2~267^2^2~4
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=be6bcabc7919522f28c99642b8e04ef7b8e19283;p=firefly-linux-kernel-4.4.55.git

mac80211: check for non-managed interface

Average beacon signal only keep tracked by managed interface,
give warning and return 0 for the others.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 8ba8b49c9531..d9a747d387f0 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1801,6 +1801,10 @@ int ieee80211_ave_rssi(struct ieee80211_vif *vif)
 	struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
 	struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
 
+	if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION)) {
+		/* non-managed type inferfaces */
+		return 0;
+	}
 	return ifmgd->ave_beacon_signal;
 }
 EXPORT_SYMBOL_GPL(ieee80211_ave_rssi);