releases/3.10.101/mac80211-minstrel_ht-set-default-tx-aggregation-timeout-to-0.patch

   1 From 7a36b930e6ed4702c866dc74a5ad07318a57c688 Mon Sep 17 00:00:00 2001
   2 From: Felix Fietkau <nbd@openwrt.org>
   3 Date: Thu, 18 Feb 2016 19:49:18 +0100
   4 Subject: mac80211: minstrel_ht: set default tx aggregation timeout to 0
   5
   6 From: Felix Fietkau <nbd@openwrt.org>
   7
   8 commit 7a36b930e6ed4702c866dc74a5ad07318a57c688 upstream.
   9
  10 The value 5000 was put here with the addition of the timeout field to
  11 ieee80211_start_tx_ba_session. It was originally added in mac80211 to
  12 save resources for drivers like iwlwifi, which only supports a limited
  13 number of concurrent aggregation sessions.
  14
  15 Since iwlwifi does not use minstrel_ht and other drivers don't need
  16 this, 0 is a better default - especially since there have been
  17 recent reports of aggregation setup related issues reproduced with
  18 ath9k. This should improve stability without causing any adverse
  19 effects.
  20
  21 Acked-by: Avery Pennarun <apenwarr@gmail.com>
  22 Signed-off-by: Felix Fietkau <nbd@openwrt.org>
  23 Signed-off-by: Johannes Berg <johannes.berg@intel.com>
  24 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  25
  26 ---
  27  net/mac80211/rc80211_minstrel_ht.c |    2 +-
  28  1 file changed, 1 insertion(+), 1 deletion(-)
  29
  30 --- a/net/mac80211/rc80211_minstrel_ht.c
  31 +++ b/net/mac80211/rc80211_minstrel_ht.c
  32 @@ -454,7 +454,7 @@ minstrel_aggr_check(struct ieee80211_sta
  33         if (skb_get_queue_mapping(skb) == IEEE80211_AC_VO)
  34                 return;
  35
  36 -       ieee80211_start_tx_ba_session(pubsta, tid, 5000);
  37 +       ieee80211_start_tx_ba_session(pubsta, tid, 0);
  38  }
  39
  40  static void