target/linux/generic/patches-3.3/061-fq_codel-dont-reinit-flow-state.patch

   1 From b379135c40163ae79ba7a54e6928b53983e74ee8 Mon Sep 17 00:00:00 2001
   2 From: Eric Dumazet <eric.dumazet@gmail.com>
   3 Date: Sat, 1 Sep 2012 03:19:57 +0000
   4 Subject: [PATCH 307/558] fq_codel: dont reinit flow state
   5
   6 When fq_codel builds a new flow, it should not reset codel state.
   7
   8 Codel algo needs to get previous values (lastcount, drop_next) to get
   9 proper behavior.
  10
  11 Signed-off-by: Dave Taht <dave.taht@gmail.com>
  12 Signed-off-by: Eric Dumazet <edumazet@google.com>
  13 Acked-by: Dave Taht <dave.taht@bufferbloat.net>
  14 Signed-off-by: David S. Miller <davem@davemloft.net>
  15 ---
  16  net/sched/sch_fq_codel.c |    2 +-
  17  1 file changed, 1 insertion(+), 1 deletion(-)
  18
  19 --- a/net/sched/sch_fq_codel.c
  20 +++ b/net/sched/sch_fq_codel.c
  21 @@ -191,7 +191,6 @@ static int fq_codel_enqueue(struct sk_bu
  22
  23         if (list_empty(&flow->flowchain)) {
  24                 list_add_tail(&flow->flowchain, &q->new_flows);
  25 -               codel_vars_init(&flow->cvars);
  26                 q->new_flow_count++;
  27                 flow->deficit = q->quantum;
  28                 flow->dropped = 0;
  29 @@ -418,6 +417,7 @@ static int fq_codel_init(struct Qdisc *s
  30                         struct fq_codel_flow *flow = q->flows + i;
  31
  32                         INIT_LIST_HEAD(&flow->flowchain);
  33 +                       codel_vars_init(&flow->cvars);
  34                 }
  35         }
  36         if (sch->limit >= 1)