netdev - Re: multi bpf filter will impact performance?

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Date:	Wed, 01 Dec 2010 18:22:48 +0100
From:	Hagen Paul Pfeifer <hagen@...u.net>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Changli Gao <xiaosuo@...il.com>, Rui <wirelesser@...il.com>,
	<netdev@...r.kernel.org>
Subject: Re: multi bpf filter will impact performance?


On Wed, 01 Dec 2010 09:42:47 +0100, Eric Dumazet wrote:

> IMHO, a better pcap optimizer would be the first step.

+1

Optimizing complex filter rules is step one in the process of optimizing
the packet processing. A JIT compiler like FreeBSD provides cannot polish a
(pcap)turd. I thought Patrick was working on a generic filter mechanism for
netfilter!? ... ;)

Hagen

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