From: Dave Taht <dave.t...@bufferbloat.net>
Keep fq_codel flow state around after queue empty.
---
.../052-fq_codel-dont-reinit-flow-state.patch | 41 ++++++++++++++++++++
1 file changed, 41 insertions(+)
create mode 100644
target/linux/generic/patches-3.3/052-fq_codel-dont-reinit-flow-state.patch
diff --git
a/target/linux/generic/patches-3.3/052-fq_codel-dont-reinit-flow-state.patch
b/target/linux/generic/patches-3.3/052-fq_codel-dont-reinit-flow-state.patch
new file mode 100644
index 0000000..2e6b219
--- /dev/null
+++ b/target/linux/generic/patches-3.3/052-fq_codel-dont-reinit-flow-state.patch
@@ -0,0 +1,41 @@
+From b379135c40163ae79ba7a54e6928b53983e74ee8 Mon Sep 17 00:00:00 2001
+From: Eric Dumazet <eric.duma...@gmail.com>
+Date: Sat, 1 Sep 2012 03:19:57 +0000
+Subject: [PATCH 307/558] fq_codel: dont reinit flow state
+
+When fq_codel builds a new flow, it should not reset codel state.
+
+Codel algo needs to get previous values (lastcount, drop_next) to get
+proper behavior.
+
+Signed-off-by: Dave Taht <dave.t...@gmail.com>
+Signed-off-by: Eric Dumazet <eduma...@google.com>
+Acked-by: Dave Taht <dave.t...@bufferbloat.net>
+Signed-off-by: David S. Miller <da...@davemloft.net>
+---
+ net/sched/sch_fq_codel.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/net/sched/sch_fq_codel.c b/net/sched/sch_fq_codel.c
+index 9fc1c62..4e606fc 100644
+--- a/net/sched/sch_fq_codel.c
++++ b/net/sched/sch_fq_codel.c
+@@ -191,7 +191,6 @@ static int fq_codel_enqueue(struct sk_buff *skb, struct
Qdisc *sch)
+
+ if (list_empty(&flow->flowchain)) {
+ list_add_tail(&flow->flowchain, &q->new_flows);
+- codel_vars_init(&flow->cvars);
+ q->new_flow_count++;
+ flow->deficit = q->quantum;
+ flow->dropped = 0;
+@@ -418,6 +417,7 @@ static int fq_codel_init(struct Qdisc *sch, struct nlattr
*opt)
+ struct fq_codel_flow *flow = q->flows + i;
+
+ INIT_LIST_HEAD(&flow->flowchain);
++ codel_vars_init(&flow->cvars);
+ }
+ }
+ if (sch->limit >= 1)
+--
+1.7.9.5
+
--
1.7.9.5
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