From owner-freebsd-hackers  Sat Dec 15 14:44: 9 2001
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Date: Sat, 15 Dec 2001 14:43:59 -0800
From: Terry Lambert <tlambert2@mindspring.com>
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To: David Greenman <dg@root.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?
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>
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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?

PS: Is it -0 (0xFFFF)?  Maybe they didn't use RFC 1936; maybe they
used RFC 1141, which has a bug (RFC 1624 corrects the one's complement
error of RFC 1141).

-- Terry

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