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List:       openbsd-misc
Subject:    Re: bge IPv6 TCP checksum broken
From:       Brynet <brynet () gmail ! com>
Date:       2014-02-24 17:12:33
Message-ID: 20140224171233.GA5323 () gmail ! com
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On Mon, Feb 24, 2014 at 04:57:23PM +0000, Martin Brandenburg wrote:
> Hello,
> 
> I have this chip:
> 
> 	bge0 at pci8 dev 0 function 0 "Broadcom BCM57765" rev 0x10, BCM57765 B0 \
> (0x57785100): msi, address a8:20:66:47:1f:8b  brgphy0 at bge0 phy 1: BCM57765 \
> 10/100/1000baseT PHY, rev. 4 
> TCP over IPv6 does not work under -current, but it does work if I
> comment out the line in if_bge.c that enables hardware checksumming.
> 
> I tried looking at the Linux driver, but I don't know enough about the
> hardware to say anything intelligent about what could be happening.
> 
> - Martin

This also affects at least:

bge0 at pci2 dev 0 function 0 "Broadcom BCM57780" rev 0x01, BCM57780 A1 (0x57780001): \
msi, address 88:ae:1d:0e:3a:76 brgphy0 at bge0 phy 1: BCM57780 10/100/1000baseT PHY, \
rev.   
Brad has been looking into the issue and has contacted Broadcom to see
if it's hardware bug.

-Bryan.


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