[dpdk-dev] [PATCH v12 0/6] add Tx preparation

Ananyev, Konstantin konstantin.ananyev at intel.com
Wed Dec 7 11:13:14 CET 2016


Hi Yliu,

> 
> On Tue, Dec 06, 2016 at 03:53:42PM +0000, Ferruh Yigit wrote:
> > > Please, we need a comment for each driver saying
> > > "it is OK, we do not need any checksum preparation for TSO"
> > > or
> > > "yes we have to implement tx_prepare or TSO will not work in this mode"
> > >
> 
> Sorry for late. For virtio, I think it's not a must. The checksum stuff
> has been handled inside the Tx function. However, we may could move it
> to tx_prepare, which would actually recover the performance lost
> introduced while enabling TSO for the non-TSO case.
> 

So would you like to provide a patch for it,
Or would you like to keep tx_prepare() for virtio as NOP for now?
Thanks
Konstantin


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