From: David Ward <david.ward@ll.mit.edu>
Date: Thu, 13 Sep 2012 05:22:35 +0000 (+0000)
Subject: net_sched: gred: actually perform idling in WRED mode
X-Git-Tag: v3.6-rc6~18^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ba1bf474eae07a128fae6252bf7d68eaef0eacf8;p=pandora-kernel.git

net_sched: gred: actually perform idling in WRED mode

gred_dequeue() and gred_drop() do not seem to get called when the
queue is empty, meaning that we never start idling while in WRED
mode. And since qidlestart is not stored by gred_store_wred_set(),
we would never stop idling while in WRED mode if we ever started.
This messes up the average queue size calculation that influences
packet marking/dropping behavior.

Now, we start WRED mode idling as we are removing the last packet
from the queue. Also we now actually stop WRED mode idling when we
are enqueuing a packet.

Cc: Bruce Osler <brosler@cisco.com>
Signed-off-by: David Ward <david.ward@ll.mit.edu>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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