[PATCH] app: fix silent enqueue fail in test_mbuf test_refcnt_iter

[Hascoet Julien]

Any news on that ? Thanks

Julien

On Thu, Aug 10, 2023 at 6:09 PM jhascoet <ju.hascoet at gmail.com> wrote:

> From: Julien Hascoet <ju.hascoet at gmail.com>
>
> In case of ring full state, we retry the enqueue
> operation in order to avoid mbuf loss.
>
> Fixes: af75078fece ("first public release")
>
> Signed-off-by: Julien Hascoet <ju.hascoet at gmail.com>
> ---
>  app/test/test_mbuf.c | 15 ++++++++++++---
>  1 file changed, 12 insertions(+), 3 deletions(-)
>
> diff --git a/app/test/test_mbuf.c b/app/test/test_mbuf.c
> index efac01806b..ad18bf6378 100644
> --- a/app/test/test_mbuf.c
> +++ b/app/test/test_mbuf.c
> @@ -1033,12 +1033,21 @@ test_refcnt_iter(unsigned int lcore, unsigned int
> iter,
>                 tref += ref;
>                 if ((ref & 1) != 0) {
>                         rte_pktmbuf_refcnt_update(m, ref);
> -                       while (ref-- != 0)
> -                               rte_ring_enqueue(refcnt_mbuf_ring, m);
> +                       while (ref-- != 0) {
> +                               /* retry in case of failure */
> +                               while (rte_ring_enqueue(refcnt_mbuf_ring,
> m) != 0) {
> +                                       /* let others consume */
> +                                       rte_pause();
> +                               }
> +                       }
>                 } else {
>                         while (ref-- != 0) {
>                                 rte_pktmbuf_refcnt_update(m, 1);
> -                               rte_ring_enqueue(refcnt_mbuf_ring, m);
> +                               /* retry in case of failure */
> +                               while (rte_ring_enqueue(refcnt_mbuf_ring,
> m) != 0) {
> +                                       /* let others consume */
> +                                       rte_pause();
> +                               }
>                         }
>                 }
>                 rte_pktmbuf_free(m);
> --
> 2.34.1
>
>
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