[dpdk-dev] [PATCH] crypto/aesni_mb: fix zero burst dequeue

[Pablo de Lara <pablo.de.lara.guarch@intel.com>]

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);
-- 
2.9.4