[PKT_SCHED]: RED: Dont start idle periods while already idling

We should not interrupt and restart an idle period while idling already.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c
index d5e934c33f96..76e8df8447d9 100644
--- a/net/sched/sch_red.c
+++ b/net/sched/sch_red.c
@@ -135,7 +135,7 @@ red_dequeue(struct Qdisc* sch)
 
         skb = qdisc_dequeue_head(sch);
 
-        if (skb == NULL)
+        if (skb == NULL && !red_is_idling(&q->parms))
                 red_start_of_idle_period(&q->parms);
 
         return skb;
@@ -154,7 +154,9 @@ static unsigned int red_drop(struct Qdisc* sch)
                 return len;
         }
 
-        red_start_of_idle_period(&q->parms);
+        if (!red_is_idling(&q->parms))
+                red_start_of_idle_period(&q->parms);
+
         return 0;
 }