Haider, have u installed mlx5 drivers in vm server? What setup u r using. A
little more detail will help

On Fri, Feb 4, 2022, 1:06 PM Haider Ali <haider@dreambigsemi.com> wrote:

> Hi,
>
> Can anyone please guide me on why I am not able to do hairpin on VF? I am
> running the testpmd application with 1 Hairpin queue and 1 standard queue
> pair on Mellanox VF but getting following error:
>
> $ sudo ./build/app/dpdk-testpmd -l 1,3 -n 4 -a 04:01.2 -- -i --rxq=1
> --txq=1 --hairpinq=1 --hairpin-mode=0x00
>
> *EAL: Probe PCI driver: mlx5_pci (15b3:101e) device: 0000:04:01.2 (socket
> 0)*
> TELEMETRY: No legacy callbacks, legacy socket not created
> Interactive-mode selected
> testpmd: create a new mbuf pool <mb_pool_1>: n=155456, size=2176, socket=1
> testpmd: preferred mempool ops selected: ring_mp_mc
> testpmd: create a new mbuf pool <mb_pool_0>: n=155456, size=2176, socket=0
> testpmd: preferred mempool ops selected: ring_mp_mc
>
> Warning! port-topology=paired and odd forward ports number, the last port
> will pair with itself.
>
> Configuring Port 0 (socket 0)
> *mlx5_net: port 0 failed to set defaults flows*
> *Fail to start port 0: Operation not supported*
> *Please stop the ports first*
> Done
> testpmd> quit
>
> Regards,
> Haider Ali
>