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

Thomas Monjalon thomas.monjalon at 6wind.com
Fri Jul 8 11:14:13 CEST 2016


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 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.


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