[dpdk-dev] [PATCH v2 08/30] net/mlx5: fix rxqs vector support verification

Nelio Laranjeiro nelio.laranjeiro at 6wind.com
Thu Oct 5 14:49:40 CEST 2017

The number of queues in DPDK does not means that the array of queue will be
totally filled, those information are uncorrelated.  The number of queues
is provided in the port configuration whereas the array is filled by
calling tx/rx_queue_setup().  As this number of queue is not increased or
decrease according to tx/rx_queue_setup() or tx/rx_queue_release(), PMD
must consider a queue may not be initialised in some position of the array.

Fixes: 6cb559d67b83 ("net/mlx5: add vectorized Rx/Tx burst for x86")
Cc: yskoh at mellanox.com
Cc: stable at dpdk.org

Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com>
 drivers/net/mlx5/mlx5_rxtx_vec_sse.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/mlx5/mlx5_rxtx_vec_sse.c b/drivers/net/mlx5/mlx5_rxtx_vec_sse.c
index 2750eac..20ea38e 100644
--- a/drivers/net/mlx5/mlx5_rxtx_vec_sse.c
+++ b/drivers/net/mlx5/mlx5_rxtx_vec_sse.c
@@ -1367,6 +1367,8 @@ priv_check_vec_rx_support(struct priv *priv)
 	for (i = 0; i < priv->rxqs_n; ++i) {
 		struct mlx5_rxq_data *rxq = (*priv->rxqs)[i];
+		if (!rxq)
+			continue;
 		if (rxq_check_vec_support(rxq) < 0)

More information about the dev mailing list