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Message from discussion checksum offload problem freebsd
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Darren Reed  
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 More options Jan 17 2012, 9:16 pm
Newsgroups: mailing.unix.ipfilter
From: darr...@reed.wattle.id.au (Darren Reed)
Date: Wed, 18 Jan 2012 03:16:57 +0100
Local: Tues, Jan 17 2012 9:16 pm
Subject: Re: checksum offload problem freebsd
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On 18/01/2012 1:15 AM, Andrew White wrote:

> Hi,

> Another colleague has pointed out

>     if_fxp in FreeBSD 7/8 adds hardware checksum support for the 82559, but not on the pseudo header. This triggers a bug in ipfilter (where it incorrectly calculates the pseudo header checksum by itself), so the patch from the PR should actually work.

>     The reason why it worked in 6.4 is because 6.4 didn't support hardware checksumming on 82559 at all.

> With the patch applied from the PR, it now works as expected (freebsd 8.2 with ipfilter 1.4.34)

> Can this patch be added to ipfilter upstream please ?

I'll get it sorted in the next day or so.

Darren


 
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