netdev - Re: Optimizing tc filters

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Message-ID: <1323547801.4016.34.camel@edumazet-laptop>
Date:	Sat, 10 Dec 2011 21:10:01 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	"John A. Sullivan III" <jsullivan@...nsourcedevel.com>
Cc:	netdev@...r.kernel.org
Subject: Re: Optimizing tc filters

Le samedi 10 décembre 2011 à 14:58 -0500, John A. Sullivan III a écrit :

> If we are using connection tracking in general to produce a "stateful"
> firewall (let's just say we are - I certainly don't want to set off a
> debate :) ), does that put #1 back on top as the most efficient since we
> are incurring the conntrack overhead anyway or does the CONNMARK target
> itself add considerable overhead? Thanks - John
> 

CONNMARK is very cheap, no extra overhead.

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