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

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

[Avner Taieb]

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

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

[Roberts, Lee A.]

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@dpdk.org] On Behalf Of Avner Taieb
Sent: Wednesday, March 4, 2020 9:48 AM
To: dev@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

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

[Avner Taieb]

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 ?

On Wed, Mar 4, 2020 at 7:33 PM Roberts, Lee A. <lee.roberts@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@dpdk.org] On Behalf Of Avner Taieb
> Sent: Wednesday, March 4, 2020 9:48 AM
> To: dev@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
>

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

[Bruce Richardson]

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@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@dpdk.org] On Behalf Of Avner Taieb
> > Sent: Wednesday, March 4, 2020 9:48 AM
> > To: dev@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
> >

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

[Avner Taieb]

Thanks. I'll try

On Thu, Mar 5, 2020 at 11:23 AM Bruce Richardson <bruce.richardson@intel.com>
wrote:

> 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@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@dpdk.org] On Behalf Of Avner Taieb
> > > Sent: Wednesday, March 4, 2020 9:48 AM
> > > To: dev@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
> > >
>