RX and TX Are short hand for Receive and Transmit Queues.
These Queues Store the in/egress packets.
Just looking at the info you've sent it tells you that max_rx_queues
for this dev is 0 (Clearly something is wrong here) so the nb_rx_q
which is 3 is an Invalid Value -EINVAL == -22.
On Thu, Aug 21, 2014 at 3:26 PM, Sergey Mironov <grrwlf at gmail.com> wrote:
> Hi. I have face a strange error on one of my network cards. Call to
> rte_eth_dev_configure returns with error code -22. Increaing the
> verbosity level shows the following:
>
>
> PMD: rte_eth_dev_configure: ethdev port_id=2 nb_rx_queues=3 > 0
> EAL: Error - exiting with code: 1
>
> here is the snippet of code which returns the error
>
>
> ./lib/librte_ether/rte_ethdev.c : 513
>
> (*dev->dev_ops->dev_infos_get)(dev, &dev_info);
> if (nb_rx_q > dev_info.max_rx_queues) {
> PMD_DEBUG_TRACE("ethdev port_id=%d nb_rx_queues=%d > %d\n",
> port_id, nb_rx_q, dev_info.max_rx_queues);
> return (-EINVAL);
> }
>
> What does this error means (what is rx queues of an adapter?) What may
> cause such a problem? I am using dpdk 1.5.1r1.
>
> Thanks in advance,
> Sergey
