[PATCH v1] eventdev/crypto: flush ops when circ buffer is full

[Jerin Jacob]

On Tue, Aug 1, 2023 at 11:15 AM Ganapati Kundapura
<ganapati.kundapura at intel.com> wrote:
>
> crypto ops from the circ buffer are not getting flushed
> to crypto dev when crypto dev becomes busy and circ buffer
> gets full.
>
> This patch flushes ops from circ buffer when circ buffer is full
> instead of returning without flushing.


Since it is bug, Please add Fixes: tag , Also change description accordingly.

> Signed-off-by: Ganapati Kundapura <ganapati.kundapura at intel.com>
>
> diff --git a/lib/eventdev/rte_event_crypto_adapter.c b/lib/eventdev/rte_event_crypto_adapter.c
> index 52a28e5..1b435c9 100644
> --- a/lib/eventdev/rte_event_crypto_adapter.c
> +++ b/lib/eventdev/rte_event_crypto_adapter.c
> @@ -248,9 +248,18 @@ eca_circular_buffer_flush_to_cdev(struct crypto_ops_circular_buffer *bufp,
>                 n = *tailp - *headp;
>         else if (*tailp < *headp)
>                 n = bufp->size - *headp;
> -       else {
> -               *nb_ops_flushed = 0;
> -               return 0;  /* buffer empty */
> +       else { /* head == tail case */
> +               /* when head == tail,
> +                * circ buff is either full(tail pointer roll over) or empty
> +                */
> +               if (bufp->count != 0) {
> +                       /* circ buffer is full */
> +                       n = bufp->count;
> +               } else {
> +                       /* circ buffer is empty */
> +                       *nb_ops_flushed = 0;
> +                       return 0;  /* buffer empty */
> +               }
>         }
>
>         *nb_ops_flushed = rte_cryptodev_enqueue_burst(cdev_id, qp_id,
> --
> 2.6.4
>