Patchwork [082/241] mac80211: don't send null data packet when not associated

mail settings
Submitter Herton Ronaldo Krzesinski
Date Dec. 13, 2012, 1:57 p.m.
Message ID <>
Download mbox | patch
Permalink /patch/205932/
State New
Headers show


Herton Ronaldo Krzesinski - Dec. 13, 2012, 1:57 p.m. -stable review patch.  If anyone has any objections, please let me know.


From: Johannes Berg <>

commit 20f544eea03db4b498942558b882d463ce575c3e upstream.

On resume or firmware recovery, mac80211 sends a null
data packet to see if the AP is still around and hasn't
disconnected us. However, it always does this even if
it wasn't even connected before, leading to a warning
in the new channel context code. Fix this by checking
that it's associated.

Reviewed-by: Emmanuel Grumbach <>
Signed-off-by: Johannes Berg <>
Signed-off-by: Herton Ronaldo Krzesinski <>
 net/mac80211/util.c |    2 ++
 1 file changed, 2 insertions(+)


diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 9ff0a85..4d83d11 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1400,6 +1400,8 @@  int ieee80211_reconfig(struct ieee80211_local *local)
 		list_for_each_entry(sdata, &local->interfaces, list) {
 			if (sdata->vif.type != NL80211_IFTYPE_STATION)
+			if (!sdata->u.mgd.associated)
+				continue;
 			ieee80211_send_nullfunc(local, sdata, 0);