Re: Zero ports detected issue for Solarflare (SFC9250) cards

[David Marchand <david.marchand@redhat.com>]

Hello,

On Sun, Sep 10, 2023 at 8:05 PM <avatli@itu.edu.tr> wrote:
>
>
> Hi all
>
> I'm trying to use Solarflare (SFC9250) cards with DPDK. I have
> compiled the skeleton/basicfwd application but when I run it with the
> following parameters, the number of ports becomes zero, and it can't
> detect the Solarflare ports on the system.
>
> $ sudo examples/dpdk-skeleton -l 0 -n 2
> EAL: Detected CPU lcores: 10
> EAL: Detected NUMA nodes: 1
> EAL: Detected static linkage of DPDK
> EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
> EAL: Selected IOVA mode 'PA'
> TELEMETRY: No legacy callbacks, legacy socket not created
> EAL: Error - exiting with code: 1
>    Cause: Error: number of ports (0) must be even
>
> Currently, the platform is using dpdk-stable-22.11.2 and CentOS 7
>
> What am I doing wrong? I would greatly appreciate your assistance
>
> > hft_005@hft_005:~/volspace/dpdk-stable-22.11.2$ usertools/dpdk-devbind.py -s
>
> Network devices using kernel driver
> ===================================
> 0000:01:00.0 'XtremeScale SFC9250 10/25/40/50/100G Ethernet Controller
> 0b03' if=enp1s0f0 drv=sfc unused= *Active*
> 0000:01:00.1 'XtremeScale SFC9250 10/25/40/50/100G Ethernet Controller
> 0b03' if=enp1s0f1 drv=sfc unused= *Active*

If you expect those two PCI devices above to be taken over by DPDK,
you need to unbind them from the kernel net driver sfc and bind them
to vfio-pci.
https://doc.dpdk.org/guides-22.11/linux_gsg/linux_drivers.html#binding-and-unbinding-network-ports-to-from-the-kernel-modules

Please keep in mind that you will lose connectivity to this system if
you are connected through enp1s0f0 or enp1s0f1 netdevs.


> 0000:06:00.0 'I210 Gigabit Network Connection 1533' if=enp6s0 drv=igb
> unused= *Active*
> 0000:07:00.0 'I210 Gigabit Network Connection 1533' if=enp7s0 drv=igb unused=
> 0000:08:00.0 'Ethernet Controller X710 for 10GBASE-T 15ff' if=enp8s0f0
> drv=i40e unused=
> 0000:08:00.1 'Ethernet Controller X710 for 10GBASE-T 15ff' if=enp8s0f1
> drv=i40e unused=


-- 
David Marchand