On Tue, 16 Jun 2026 11:42:58 +0200
Maxime Leroy <[email protected]> wrote:
> The dummy rx_queue_count/tx_queue_count callback returned -ENOTSUP. On a
> port that is not started (freshly allocated, or stopped once the fast-path
> ops are reset to dummies) there are no packets queued, so the truthful
> answer is 0, not an error: querying the count is not an unsupported
> operation. This also matches the dummy Rx/Tx burst, which reports 0
> packets.
>
> A poll-mode worker checking rte_eth_rx_queue_count() across a concurrent
> port stop then sees an empty queue instead of a negative error.
>
> Fixes: 066f3d9cc21c ("ethdev: remove callback checks from fast path")
> Cc: [email protected]
>
> Suggested-by: Stephen Hemminger <[email protected]>
> Signed-off-by: Maxime Leroy <[email protected]>
Acked-by: Stephen Hemminger <[email protected]>
