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Date:      Mon, 05 Nov 2007 15:12:34 -0800
From:      Garrett Cooper <youshi10@u.washington.edu>
To:        net@freebsd.org
Subject:   Re: Marvell chipsets on 8-CURRENT and XP x64 won't talk with one another
Message-ID:  <472FA362.6040608@u.washington.edu>
In-Reply-To: <9CFC3779-3A4C-4ADD-8F2C-982887CB3039@u.washington.edu>
References:  <A47860E0-1E9E-46B2-AFB4-7FE3DF7911C9@u.washington.edu>	<20071019182349.J97691@odysseus.silby.com>	<47194EA1.8000402@u.washington.edu>	<20071019212012.C97691@odysseus.silby.com>	<47202922.3070700@u.washington.edu>	<47209570.20609@tomjudge.com>	<4723330A.7070803@u.washington.edu>	<4728B256.5080005@u.washington.edu> <9CFC3779-3A4C-4ADD-8F2C-982887CB3039@u.washington.edu>

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Garrett Cooper wrote:
> On Oct 31, 2007, at 9:50 AM, Garrett Cooper wrote:
>> I'm running tcpdump on my Mac and I noted a lot of 'bad checksums' 
>> (0x081c was the official error in all cases), then consulted the msk 
>> driver. It appears that there's a bug with Yukon II chipsets with the 
>> hardware checksumming and I wonder whether or not the chipset that I 
>> have is affected by this issue as well.
>> I'll provide my chipset/model info in my next reply (can't access it 
>> from this PC).
>> -Garrett
>
> Got a wee bit busy there.
>
> Anyhow, here's the chipset info (snippet) reported from dmesg:
>
> [gcooper@shiina: ~]$ ssh -C optimus "dmesg | grep msk"
> Password:
> mskc0: <Marvell Yukon 88E8056 Gigabit Ethernet> port 0xd800-0xd8ff mem 
> 0xfe9fc000-0xfe9fffff irq 17 at device 0.0 on pci2
> msk0: <Marvell Technology Group Ltd. Yukon EC Ultra Id 0xb4 Rev 0x02> 
> on mskc0
> msk0: Ethernet address: 00:1b:fc:45:9b:5c
> miibus0: <MII bus> on msk0
>
> -Garrett

The issue indeed is with the msk(4) driver in FreeBSD.
I just plugged in an em(4) compatible card, powered it up and now my 
server works like a champ with the XP machine.
As a reference the MB's affected by this are mostly the ASUS MB's, i.e. 
P5B and P5K series ones. MSI MB's may be affected by this issue as well 
because I think they come with msk(4) compatible chipsets onboard..
-Garrett



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