[3.13.y.z extended stable] Patch "mac80211: fix software remain-on-channel implementation" has been added to staging queue

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    mac80211: fix software remain-on-channel implementation

to the linux-3.13.y-queue branch of the 3.13.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-3.13.y-queue

This patch is scheduled to be released in version 3.13.11.3.

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

For more information about the 3.13.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From 26e835d58d0a84af1402c2d2f6f72f1058ee16e5 Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg at intel.com>
Date: Thu, 27 Mar 2014 15:39:20 +0100
Subject: mac80211: fix software remain-on-channel implementation

commit 115b943a6ea12656088fa1ff6634c0d30815e55b upstream.

Jouni reported that when doing off-channel transmissions mixed
with on-channel transmissions, the on-channel ones ended up on
the off-channel in some cases.

The reason for that is that during the refactoring of the off-
channel code, I lost the part that stopped all activity and as
a consequence the on-channel frames (including data frames)
were no longer queued but would be transmitted on the temporary
channel.

Fix this by simply restoring the lost activity stop call.

Fixes: 2eb278e083549 ("mac80211: unify SW/offload remain-on-channel")
Reported-by: Jouni Malinen <j at w1.fi>
Signed-off-by: Johannes Berg <johannes.berg at intel.com>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 net/mac80211/offchannel.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/mac80211/offchannel.c b/net/mac80211/offchannel.c
index 0c2a294..6fb3855 100644
--- a/net/mac80211/offchannel.c
+++ b/net/mac80211/offchannel.c
@@ -355,6 +355,7 @@ void ieee80211_sw_roc_work(struct work_struct *work)
 		struct ieee80211_roc_work *dep;

 		/* start this ROC */
+		ieee80211_offchannel_stop_vifs(local);

 		/* switch channel etc */
 		ieee80211_recalc_idle(local);
--
1.9.1