From: Hagen Paul Pfeifer <hagen@jauu.net>
Date: Sun, 24 Jan 2010 12:30:59 +0000 (+0000)
Subject: sched: add head drop fifo queue
X-Git-Tag: v2.6.34-rc1~233^2~490
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=57dbb2d83d100ea601c54fe129bfde0678db5dee;p=pandora-kernel.git

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>
---

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