Re: [PATCH] crypto/aesni_mb: fix zero burst dequeue

[Declan Doherty <declan.doherty@intel.com>]

On 14/07/2017 7:48 AM, Pablo de Lara wrote:
> In the unlikely scenario that an application
> calls rte_cryptodev_dequeue_burst with nb_ops = 0,
> there was a job leak, as a job would be created
> but would not be populated, as no operation is passed.
>
> Fixes: 0f548b50a160 ("crypto/aesni_mb: process crypto op on dequeue")
> Cc: stable@dpdk.org
>
> Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
> ---
>  drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c b/drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c
> index 13cffaf..fda662f 100644
> --- a/drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c
> +++ b/drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c
> @@ -644,6 +644,9 @@ aesni_mb_pmd_dequeue_burst(void *queue_pair, struct rte_crypto_op **ops,
>
>  	int retval, processed_jobs = 0;
>
> +	if (unlikely(nb_ops == 0))
> +		return 0;
> +
>  	do {
>  		/* Get next operation to process from ingress queue */
>  		retval = rte_ring_dequeue(qp->ingress_queue, (void **)&op);
>

Acked-by: Declan Doherty <declan.doherty@intel.com>