linux-kernel - Re: [PATCH 0/2] xt_u32 - match arbitrary bits and bytes of a packet

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Date:	Sun, 3 Jun 2007 10:20:13 +0200 (MEST)
From:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
To:	Valdis.Kletnieks@...edu
cc:	Netfilter Mailing List <netfilter@...ts.netfilter.org>,
	Netfilter Developer Mailing List 
	<netfilter-devel@...ts.netfilter.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/2] xt_u32 - match arbitrary bits and bytes of a packet


On Jun 3 2007 01:07, Valdis.Kletnieks@...edu wrote:
>On Sat, 02 Jun 2007 23:46:46 +0200, Jan Engelhardt said:
>
>> along comes xt_u32, a revamped ipt_u32,
>
>+1 for doing this - I've been dragging along a local ipt_u32 patch for a while,
>and been wishing it had ipv6 support.
>
>>     *	Reduced the buffer size to 17 KB. I think that is quite ok since 
>> 	I added an overflow check,  SHOULD THERE BE ANY device with an 
>> 	MTU larger than our loopback masterpiece (16436 bytes).
>> 
>> 	Are there such devices that support Megasuperjumboframes?
>
>IP over Infiniband? I think those have some outrageous MTU?  Personally,
>I wouldn't need it for anything bigger than 9K ethernet jumbograms, but
>that one's a decision for others.

Can you find out? For such supersize packets, I'd like to switch to
kmalloc/vmalloc rather than keeping a big buffer in the .bss.


	Jan
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