From owner-freebsd-hackers  Sat Dec 15 15:18:21 2001
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Date: Sat, 15 Dec 2001 15:09:33 -0800
From: David Greenman <dg@root.com>
To: Terry Lambert <tlambert2@mindspring.com>
Cc: Alfred Perlstein <bright@mu.org>,
	Brooks Davis <brooks@one-eyed-alien.net>, rsharpe@ns.aus.com,
	freebsd-hackers@FreeBSD.ORG
Subject: Re: Does anyone know if the Broadcom BCM5700 has problems with HW csum?
Message-ID: <20011215150933.B86349@nexus.root.com>
References: <3C1AEA9E.6010502@ns.aus.com> <20011214214118.A30560@Odin.AC.HMC.Edu> <3C1AF362.534BD2F7@mindspring.com> <20011215005739.A84861@nexus.root.com> <20011215031304.N79896@elvis.mu.org> <20011215011045.C84861@nexus.root.com> <3C1B32EB.ACBA8DB@mindspring.com> <20011215135635.A86349@nexus.root.com> <3C1BD22F.F3A52BF4@mindspring.com>
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>David Greenman wrote:
>> >In any case, disabling it is what ClickArray ended up doing, as well,
>> >for the Tigon II, until the firmware could be fixed.
>> 
>>    We're talking about the Tigon III (bge driver for Broadcom BCM5700/BCM5701).
>
>Crap.  Thanks for the info.
>
>Have you manually calculated the checksum on a bad packet to see
>how it's off?

   Yes. It's typically off by 0x1051, but varies depending on the TCP/IP
header contents.

-DG

David Greenman
Co-founder, The FreeBSD Project - http://www.freebsd.org
President, TeraSolutions, Inc. - http://www.terasolutions.com
Pave the road of life with opportunities.

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