On Fri, Apr 18, 2025 at 10:30 PM spyroot <spyroot@gmail.com> wrote:

Hi Folks,

I am observing that DPDK test-pmd with IAVF PMD, ICEN PF driver,

reporting statistics incorrectly when the RX side generates a UDP flow that randomizes or increments IP/UDP header data (IP/port, etc).

I tested all 23.x stable and all branches.

-If I use single flow (on the TX side, all tuples are the same on the RX

HASH() produce -> same result). no issue.

So, on the RX side, I see all zero packet drops and the correct pps value reported by test-pmd.

- If I increase the number of flows ( IP/UDP, etc.), the PPS Counter and byte/pkt counter

report only single queues. (i.e, it looks to me like it uses some default queue 0

or something and skips the rest 15 (in my case --rxq=16). (It could IAVF do that or ICEN report that). I'm not sure.

For example, the counter I'm referring to test-pmd Rx-pps counter.

Rx-pps: 4158531 Rx-bps: 2129167832

I'm also observing PMD Failing fetch stats error msg.

iavf_query_stats(): fail to execute command OP_GET_STATS

iavf_dev_stats_get(): Get statistics failed

My Question.

If I have two instances of

test-pmd --allowed X

test-pmd --allowed Y

Where X is VFs PCI ADDR X and Y PCI ADDR Y from the PF?

I expect to see the total stats (pps/bytes, etc.) (combined value for all 16 queues for a port 0 )

RX-PPS and bytes per port on both instances.

Yes/No?

Has anyone had a similar issue in the past?

Thank you,