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| author | Hagen Paul Pfeifer <hagen@jauu.net> | 2010-01-24 12:30:59 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-01-28 21:27:00 -0800 |
| commit | 57dbb2d83d100ea601c54fe129bfde0678db5dee (patch) | |
| tree | 40305bcd986692f512b1b5e848c0b0f612968c6a /net/sched/sch_api.c | |
| parent | d74340d31bf1dbeb00acadddd8697666528a7846 (diff) | |
| download | linux-3.10-57dbb2d83d100ea601c54fe129bfde0678db5dee.tar.gz linux-3.10-57dbb2d83d100ea601c54fe129bfde0678db5dee.tar.bz2 linux-3.10-57dbb2d83d100ea601c54fe129bfde0678db5dee.zip | |
sched: add head drop fifo queue
This adds an additional queuing strategy, called pfifo_head_drop,
to remove the oldest skb in the case of an overflow within the queue -
the head element - instead of the last skb (tail). To remove the oldest
skb in congested situations is useful for sensor network environments
where newer packets reflect the superior information.
Reviewed-by: Florian Westphal <fw@strlen.de>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_api.c')
| -rw-r--r-- | net/sched/sch_api.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c index 75fd1c672c6..6cd491013b5 100644 --- a/net/sched/sch_api.c +++ b/net/sched/sch_api.c @@ -1707,6 +1707,7 @@ static int __init pktsched_init(void) { register_qdisc(&pfifo_qdisc_ops); register_qdisc(&bfifo_qdisc_ops); + register_qdisc(&pfifo_head_drop_qdisc_ops); register_qdisc(&mq_qdisc_ops); proc_net_fops_create(&init_net, "psched", 0, &psched_fops); |