linux-kernel - Re: [RFD] iptables: mangle table obsoletes filter table

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Message-ID: <Pine.LNX.4.64.0710201310050.1997@fbirervta.pbzchgretzou.qr>
Date:	Sat, 20 Oct 2007 13:10:48 +0200 (CEST)
From:	Jan Engelhardt <jengelh@...putergmbh.de>
To:	Valdis.Kletnieks@...edu
cc:	Al Boldi <a1426z@...ab.com>, Bill Davidsen <davidsen@....com>,
	Patrick McHardy <kaber@...sh.net>,
	netfilter-devel@...r.kernel.org, netdev@...r.kernel.org,
	linux-net@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFD] iptables: mangle table obsoletes filter table


On Oct 20 2007 00:47, Valdis.Kletnieks@...edu wrote:
>> Sure, the idea was to mark the filter table obsolete as to make people start 
>> using the mangle table to do their filtering for new setups.  The filter 
>> table would then still be available for legacy/special setups.  But this 
>> would only be possible if we at least ported the REJECT target to mangle.
>
>That's *half* the battle.  The other half is explaining why I should move
>from a perfectly functional setup that uses the filter table.  What gains
>do I get from doing so?  What isn't working that I don't know about? etc?
>
>In other words - why do I want to move from filter to mangle?

Packet processing time.
Compare previous:
	packet goes through mangle, then is dropped in filter
Compare afterwards:
	packet is already dropped in mangle

=> less code to run through
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