netdev - Re: TG3 network data corruption regression 2.6.24/2.6.23.4

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Message-ID: <1203381120.13495.78.camel@dell>
Date:	Mon, 18 Feb 2008 16:32:00 -0800
From:	"Michael Chan" <mchan@...adcom.com>
To:	"Tony Battersby" <tonyb@...ernetics.com>
cc:	"Herbert Xu" <herbert@...dor.apana.org.au>,
	"David Miller" <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>,
	"Greg Kroah-Hartman" <gregkh@...e.de>, linux-kernel@...r.kernel.org
Subject: Re: TG3 network data corruption regression 2.6.24/2.6.23.4

On Mon, 2008-02-18 at 17:41 -0500, Tony Battersby wrote:
> I am experiencing network data corruption with a 3Com 3C996B-T NIC
> (Broadcom NetXtreme BCM5701; driver tg3.ko).  I have identified the
> following patch as the trigger:

Assuming this problem is unique to the 5701, I'm not sure how it is
exposed by Herbert's patch.  One thing unique on the 5701 is that it
double-copies all RX packets so that the data starts at offset 2, but
that's quite unrelated to the patch below.

> 
> commit fb93134dfc2a6e6fbedc7c270a31da03fce88db9
> Author: Herbert Xu <herbert@...dor.apana.org.au>
> Date:   Wed Nov 14 15:45:21 2007 -0800
> 
>     [TCP]: Fix size calculation in sk_stream_alloc_pskb
>    
> 

> I do not get data corruption when substituting a SysKonnect 9D21 NIC
> (which also uses the tg3.ko driver)

What Broadcom chip is on the Syskonnect card?



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