Patchwork [3.5.y.z,extended,stable] Patch "mac80211: don't send null data packet when not associated" has been added to staging queue

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Submitter Herton Ronaldo Krzesinski
Date Dec. 7, 2012, 4:04 p.m.
Message ID <1354896294-22063-1-git-send-email-herton.krzesinski@canonical.com>
Download mbox | patch
Permalink /patch/204544/
State New
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Comments

Herton Ronaldo Krzesinski - Dec. 7, 2012, 4:04 p.m.
This is a note to let you know that I have just added a patch titled

    mac80211: don't send null data packet when not associated

to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Herton

------

From 8f6e2ef15b1a9e55ef9796272e4015bcbd2d0f3a Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Thu, 8 Nov 2012 14:06:28 +0100
Subject: [PATCH] mac80211: don't send null data packet when not associated

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 <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
---
 net/mac80211/util.c |    2 ++
 1 file changed, 2 insertions(+)

--
1.7.9.5

Patch

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)
 				continue;
+			if (!sdata->u.mgd.associated)
+				continue;

 			ieee80211_send_nullfunc(local, sdata, 0);
 		}