dpdk-testpmd fails with a Mellanox ConnectX-4 Lx NIC

[Dmitry Kozlyuk]

Hi Gabor,

2025-02-24 21:19 (UTC+0100), Gábor LENCSE:
> I am trying to run dpdk-testpmd on a Dell PowerEdge R730 server with 
> Mellanox ConnectX-4 Lx NIC card. I can bind the vfio-pci driver:
> 
> root at dut3:~# dpdk-devbind.py --status
> 
> Network devices using DPDK-compatible driver
> ============================================
> 0000:05:00.0 'MT27710 Family [ConnectX-4 Lx] 1015' drv=vfio-pci 
> unused=mlx5_core,uio_pci_generic
> 0000:05:00.1 'MT27710 Family [ConnectX-4 Lx] 1015' drv=vfio-pci 
> unused=mlx5_core,uio_pci_generic

Mellanox NICs need mlx5_core kernel driver even when used via DPDK.