If you enter the following in a shell you will see that disabling tx csum 
offload implies that other features are disabled also:

ethtool -K eth0 tx off

Dave

On 15/12/2011, at 5:26 PM, "Sheili Mittal" <[email protected]> wrote:

> Can you reply this also with your testing experience:-
> 
> I go the list of Linux h/w offloading and commands to enable or disable
> it. Like :-
> 
> Ethtool -K <interface> <offload type> <on/off>
> 
> So for H/w offload to test with OVS , should I enable this from Linux
> machine only or this functionality is on virtual machine also
> 
> What set-up you used for this?
> 
> Regards,
> Sheili
> 
> -----Original Message-----
> From: Dave Whitla [mailto:[email protected]] 
> Sent: 15 December 2011 12:51
> To: Jesse Gross
> Cc: Sheili Mittal; [email protected]
> Subject: Re: [ovs-discuss] H/w offloading list for OVS 1.2.2
> 
> Sheili, 
> 
> A particular case to be aware of is when combining Linux bridging with
> 802.1q vlans. Hardware tx checksum offload does not work properly in
> this scenario, so it is advisable to disable tx checksum offloading in
> virtual machines which connect to vifs mapped to a vlan or a trunk port
> to which untagged ports are also bridged. In my personal testing of OVS
> the same applies.
> 
> Dave
> 
> On 15/12/2011, at 2:17 PM, Jesse Gross <[email protected]> wrote:
> 
>> On Wed, Dec 14, 2011 at 7:54 PM, Sheili Mittal
>> <[email protected]> wrote:
>>> Hi,
>>> 
>>> 
>>> 
>>> Please give me list which OVS 1.2.2 supports for hardware offloading
> like
>>> checksum offloading,jumbo grames, tagging etc..
>> 
>> It's the same as the rest of Linux.
>> _______________________________________________
>> discuss mailing list
>> [email protected]
>> http://openvswitch.org/mailman/listinfo/discuss
> 
> 
> 
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