[dpdk-dev] [PATCH v2 1/2] doc: add bifurcated driver guide on ixgbe nic

Wu, Jingjing jingjing.wu at intel.com
Mon Jul 11 07:50:14 CEST 2016



> -----Original Message-----
> From: Thomas Monjalon [mailto:thomas.monjalon at 6wind.com]
> Sent: Friday, July 8, 2016 5:14 PM
> To: Wu, Jingjing
> Cc: dev at dpdk.org; Mcnamara, John; Liu, Yong; Zhang, Helin; Iremonger,
> Bernard
> Subject: Re: [dpdk-dev] [PATCH v2 1/2] doc: add bifurcated driver guide on
> ixgbe nic
> 
> 2016-07-08 08:42, Wu, Jingjing:
> > From: Thomas Monjalon [mailto:thomas.monjalon at 6wind.com]
> > > Thank you for providing more doc.
> > > I am just not convinced it is the right place and it must be
> > > discussed.
> > > Some questions below to help deciding where it must be.
> > >
> > > 2016-06-23 11:02, Jingjing Wu:
> > > > Bifurcated driver is a mechanism which depends the advanced
> > > > Ethernet device to split traffic between queues. It provides the
> > > > capability to let the kernel driver and DPDK driver co-exist and
> > > > take their advantage.
> > >
> > > The name "bifurcated driver" was used for a real driver proposal in
> > > Linux. I don't think it applies here.
> 
> Where does the "bifurcated" name come from?
> Could we rename it to "flow bifurcation" or "partial kernel bypass"?
> 
It is our internal name. It is also called as queue split between drivers.
And I like the "flow bifurcation" one, let me rename it. Thanks for the suggestion.

> > > > It is achieved by using SRIOV and NIC's advanced filtering. This
> > > > patch describes it and adds the user guide on ixgbe NICs.
> > >
> > > It is not a DPDK feature, just a use case.
> > > What do we learn about DPDK?
> >
> > Yes, it is an feature in Linux driver. And the typical use case how DPDK co-
> work with Linux networking.
> > I think it will be a good reference. When I preparde this patch, I'm
> > also doubt where to put, and the behavior may be NIC specific, so I added
> it here.
> >
> > Any other suggestion?
> 
> Bernard is creating an howto section.
Yes, just saw it. Will re-organize it to howto.



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