Patch "mac80211: minstrel_ht: set default tx aggregation timeout to 0" has been added to the 4.4-stable tree

Patch "mac80211: minstrel_ht: set default tx aggregation timeout to 0" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    mac80211: minstrel_ht: set default tx aggregation timeout to 0

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     mac80211-minstrel_ht-set-default-tx-aggregation-timeout-to-0.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 7a36b930e6ed4702c866dc74a5ad07318a57c688 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Thu, 18 Feb 2016 19:49:18 +0100
Subject: mac80211: minstrel_ht: set default tx aggregation timeout to 0

From: Felix Fietkau <nbd@openwrt.org>

commit 7a36b930e6ed4702c866dc74a5ad07318a57c688 upstream.

The value 5000 was put here with the addition of the timeout field to
ieee80211_start_tx_ba_session. It was originally added in mac80211 to
save resources for drivers like iwlwifi, which only supports a limited
number of concurrent aggregation sessions.

Since iwlwifi does not use minstrel_ht and other drivers don't need
this, 0 is a better default - especially since there have been
recent reports of aggregation setup related issues reproduced with
ath9k. This should improve stability without causing any adverse
effects.

Acked-by: Avery Pennarun <apenwarr@gmail.com>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/mac80211/rc80211_minstrel_ht.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/mac80211/rc80211_minstrel_ht.c
+++ b/net/mac80211/rc80211_minstrel_ht.c
@@ -691,7 +691,7 @@ minstrel_aggr_check(struct ieee80211_sta
 	if (likely(sta->ampdu_mlme.tid_tx[tid]))
 		return;
 
-	ieee80211_start_tx_ba_session(pubsta, tid, 5000);
+	ieee80211_start_tx_ba_session(pubsta, tid, 0);
 }
 
 static void


Patches currently in stable-queue which might be from nbd@openwrt.org are

queue-4.4/mac80211-minstrel_ht-set-default-tx-aggregation-timeout-to-0.patch
queue-4.4/mac80211-minstrel_ht-fix-a-logic-error-in-rts-cts-handling.patch