net_sched: gred: actually perform idling in WRED mode
authorDavid Ward <david.ward@ll.mit.edu>
Thu, 13 Sep 2012 05:22:35 +0000 (05:22 +0000)
committerDavid S. Miller <davem@davemloft.net>
Thu, 13 Sep 2012 20:10:13 +0000 (16:10 -0400)
commitba1bf474eae07a128fae6252bf7d68eaef0eacf8
treeb26f1d2656b2659935eff175c168604753f7a5e9
parent1fe37b106b039d9358fd1211c39b1fa199e547a8
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>
net/sched/sch_gred.c