netdev - Re: [ANNOUNCE] new iptables module match large amount of ip addresses

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Date:	Fri, 18 Sep 2009 01:33:39 +0200 (CEST)
From:	Jan Engelhardt <jengelh@...ozas.de>
To:	Mikulas Patocka <mikulas@...ax.karlin.mff.cuni.cz>
cc:	netfilter-devel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [ANNOUNCE] new iptables module match large amount of ip
 addresses

On Friday 2009-09-18 01:01, Mikulas Patocka wrote:
>> On Thursday 2009-09-17 21:15, Mikulas Patocka wrote:
>> >
>> >Here I submit an iptables module that can match large amounts (millions) 
>> >of ip addresses efficiently using binary search.
>> 
>> So you just reinvented xt_geoip...
>
>I am wondering, if there are two approaches for matching large amounts of 
>addresses (xt_geoip and ipset), why is none of them in the kernel?

Because, so I would estimate, Patrick would decline patches with the 
reasoning of redundant code. Especially so "IPMARK".

>I was saying how OpenBSD is better than Linux because OpenBSD has 
>tree-based firewall tables --- hmm --- well --- Linux has them too, except 
>that noone can really find them because they are not in the kernel.

You can build trees of chains with iptables. (Which would be quite a 
fast thing if you do not have modules at hand.)

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