[dpdk-stable] [PATCH] net/virtio: remove handling of zero desc number on RxQ setup

[Andrew Rybchenko]

From: Ivan Ilchenko <ivan.ilchenko at oktetlabs.ru>

Rx queue setup callback allows to use the whole ring when
descriptor number argument equals zero. There's no point to
handle zero in any way since RTE Rx queue setup function
rte_eth_rx_queue_setup() doesn't pass zero using fallback
values.

Fixes: 3be82f5cc5e3 ("ethdev: support PMD-tuned Tx/Rx parameters")
Cc: stable at dpdk.org

Signed-off-by: Ivan Ilchenko <ivan.ilchenko at oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <andrew.rybchenko at oktetlabs.ru>
---
 drivers/net/virtio/virtio_rxtx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/virtio/virtio_rxtx.c b/drivers/net/virtio/virtio_rxtx.c
index 8a48fba5cc..18f03c9fc9 100644
--- a/drivers/net/virtio/virtio_rxtx.c
+++ b/drivers/net/virtio/virtio_rxtx.c
@@ -706,7 +706,7 @@ virtio_dev_rx_queue_setup(struct rte_eth_dev *dev,
 	}
 	vq->vq_free_thresh = rx_free_thresh;
 
-	if (nb_desc == 0 || nb_desc > vq->vq_nentries)
+	if (nb_desc > vq->vq_nentries)
 		nb_desc = vq->vq_nentries;
 	vq->vq_free_cnt = RTE_MIN(vq->vq_free_cnt, nb_desc);
 
-- 
2.30.2