[dpdk-users] Unable to recognize master/representor on the multiple IB devices

[Xueming(Steven) Li]

Hi Sankalpa,

Have you enabled SRIOV and switchdev mode correctly? Is there any error in demsg?
Here is the regular steps:
1. enable sriov - new VF ports shown in `ip link`
2. unbind VFs - new VF ports disappear
3. enable switchdev mode - new representor ports shown in `ip link`
4. bind VFs again or passthrough to VM

Best Regards,
Xueming

> -----Original Message-----
> From: users <users-bounces at dpdk.org> On Behalf Of Sankalpa Timilsina
> Sent: Sunday, May 23, 2021 2:43 AM
> To: users at dpdk.org
> Subject: [dpdk-users] Unable to recognize master/representor on the multiple IB devices
> 
>  Hi, I am getting a DPDK MLX5 probing issue.
> 
>    1. I have installed the mlx5/ofed driver
>    2. I have loaded the kernel modules.
> 
> EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
> EAL: Selected IOVA mode 'PA'
> EAL: No available hugepages reported in hugepages-2048kB
> EAL: Probing VFIO support...
> EAL: Probe PCI driver: mlx5_pci (15b3:1013) device: 0000:5e:00.0 (socket 0)
> mlx5_pci: unable to recognize master/representors on the multiple IB devices
> common_mlx5: Failed to load driver = mlx5_pci.
> 
> EAL: Requested device 0000:5e:00.0 cannot be used
> EAL: Bus (pci) probe failed.
> 
> As for the 'failing to load mlx5_pci' driver, I can see that the mlx5_core driver is loaded.
> 
> dpdk-devbind.py -s
> 
> Network devices using kernel driver
> ===================================
> 0000:5e:00.0 'MT27700 Family [ConnectX-4]' if=enp94s0 drv=mlx5_core unused=
> 
> What does failing to recognize master/representors on multiple IB devices mean?
> 
> My configuration is: CentOS 7.9, Linux Kernel 5.12, OFED 4.9 (LTS)