RES: Virtio_user for kernel interface.

[Carlos de Souza Moraes Neto]

Hi David,
Thankyou it worked.


Sincerely,

Carlos de Souza Moraes Neto
WEG Equipamentos Elétricos S/A. - Transmissão & Distribuição
www.weg.net



-----Mensagem original-----
De: David Marchand <david.marchand at redhat.com> 
Enviada em: segunda-feira, 28 de agosto de 2023 05:31
Para: Carlos de Souza Moraes Neto <carlosmn at weg.net>
Cc: users at dpdk.org
Assunto: Re: Virtio_user for kernel interface.

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On Mon, Aug 28, 2023 at 10:07 AM Carlos de Souza Moraes Neto <carlosmn at weg.net> wrote:
> I'm attempting to utilize virtio_user for packet transmission and reception via the kernel's network stack. I transmitted packets from a NIC to virtio_user0 and captured them on the tap0 interface. However, when trying to send a packet from tap0 (for instance, a basic ping) and route it to DPDK, the function rte_eth_rx_burst returns zero packets. My initialization is set as follows:
>         -l 0-4 --vdev=virtio_user0,path=/dev/vhost-net,queues=3,queue_size=1024.

Just an idea.
If you ask for 3 queue pairs, your application must poll packets from all 3 rxqs, as the kernel may choose to send packets through any of those queues.
Are you perhaps only polling one rxq?


--
David Marchand