[dpdk-dev] Need Help for Intel - i40e , XL710 40GbE Controller

Bruce Richardson bruce.richardson at intel.com
Thu Mar 5 10:23:34 CET 2020


On Wed, Mar 04, 2020 at 08:05:27PM +0200, Avner Taieb wrote:
> Thanks Lee. I already read it and tried the potential remedy that is
> suggested i.e. enabling the multi driver support , but it didn't solved the
> problem.
> Are there more setting documented anywhere ?
> 

Did you try using igb_uio driver from DPDK as the kernel module to see if
that works? The IOMMU grouping of the ports may be causing issues.

/Bruce

> On Wed, Mar 4, 2020 at 7:33 PM Roberts, Lee A. <lee.roberts at hpe.com> wrote:
> 
> > See https://www.kernel.org/doc/Documentation/networking/i40e.rst, in
> > particular,
> > read the paragraph on "Unexpected Issues when the device driver and DPDK
> > share a device".
> >
> >                          - Lee
> >
> > -----Original Message-----
> > From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Avner Taieb
> > Sent: Wednesday, March 4, 2020 9:48 AM
> > To: dev at dpdk.org
> > Subject: [dpdk-dev] Need Help for Intel - i40e , XL710 40GbE Controller
> >
> > Hi,
> > I am using  XL710 40GbE Controller with two ports.
> > The way I am using them is one port is configured to vfio-pci for using
> > with dpdk in user space and the other is left to the kernel driver and for
> > a seperate application that does not use DPDK.
> > As soon as DPDK initialize and start the port, the other port
> > become unusable.
> >
> > Is there any setting/configuration that I am missing  ?
> >
> > Thanks,
> > Avner
> >


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