netdev - Re: [PATCH RFC] ipv6: use stronger hash for reassembly queue hash table

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Message-ID: <20130313013101.GF14801@order.stressinduktion.org>
Date:	Wed, 13 Mar 2013 02:31:01 +0100
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Eric Dumazet <eric.dumazet@...il.com>, netdev@...r.kernel.org,
	yoshfuji@...ux-ipv6.org, brouer@...hat.com
Subject: Re: [PATCH RFC] ipv6: use stronger hash for reassembly queue hash table

On Wed, Mar 13, 2013 at 02:27:15AM +0100, Hannes Frederic Sowa wrote:
> Disable netfilter defragmenation for ipv6 on your machine if you test
> this patch, otherwise you won't see the improvment. Machine now runs
> smoothly under fragmentation dos.

Just to clarify:

When I wrote dos above, I actually meant a dos where the addresses have a
common ipv6_addr_hash. A simple test tool I wrote for testing is here:

  https://gist.github.com/hannes/5116331

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