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Date:      Fri, 14 Dec 2001 22:53:22 -0800
From:      Terry Lambert <tlambert2@mindspring.com>
To:        Brooks Davis <brooks@one-eyed-alien.net>
Cc:        rsharpe@ns.aus.com, freebsd-hackers@FreeBSD.ORG
Subject:   Re: Does anyone know if the Broadcom BCM5700 has problems with HW csum?
Message-ID:  <3C1AF362.534BD2F7@mindspring.com>
References:  <3C1AEA9E.6010502@ns.aus.com> <20011214214118.A30560@Odin.AC.HMC.Edu>

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Brooks Davis wrote:
> There was a commit to current a few hours ago disabling hardware
> checksums on recieve due to corruption problems.  It will be MFC'd in
> three days though it's a two line fix so you could apply it your self:
> 
> http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/bge/if_bge.c.diff?r1=1.4&r2=1.5

I believe you will find that the problem is related to the firmware
handling of VLAN tagging, and that the problem only exists if VLAN
tagging is enabled.

-- Terry

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