From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jamie Gloudon <jamie.gloudon@gmail.com>
Subject: Re: BUG: TCPDUMP invalid cksum persists after disabling TCP cksum
 offload
Date: Tue, 18 Sep 2012 18:20:40 -0400
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Cc: Vijay Subramanian <subramanian.vijay@gmail.com>,
	netdev@vger.kernel.org
To: Rick Jones <rick.jones2@hp.com>
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Rick is correct. Disabling TX CKO also disable TSO. You can see that in
my ethtool output.

On Tue, Sep 18, 2012 at 02:54:38PM -0700, Rick Jones wrote:
> On 09/18/2012 02:46 PM, Vijay Subramanian wrote:
> >>The results after disabling tcp cksum offload feature:
> >># ethtool -K eth1 tx off
> >
> >Instead of this, can you try
> ># ethtool -K eth1 tso off
> 
> Doesn't TSO depend on TX CKO being enabled?  That is, if TX CKO were
> disabled, shouldn't TSO have been implicitly disabled at the same time?
> 
> rick jones