The type of filter you define below is a perfect filter.  So if you are 
using that type you would want perfect filter mode.

You can enable perfect filter mode one of two ways.  The first is to do 
it via the FdirMode module parameter, the second is to enable it via the 
command:
ethtool -K ethX ntuple on.

Thanks,

Alex

On 08/16/2011 06:48 PM, Jon Zhou wrote:
> Hi
>
> When I create a flow director filter like below, should I set FdirMode = ATR 
> or perfect filter mode? Or just default
>
> "Ethtool  -U eth5 flow-type udp4 vlan $vLanId vlan-mask 0xF000 action 1"
>
> Is it a kind of perfect filter or something else?
>
>
> Thanks
> jon
>
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