net/mlx4: check RSS queues number limitation

[dpdk.git] / drivers / net / mlx4 / mlx4_rxq.c

diff --git a/drivers/net/mlx4/mlx4_rxq.c b/drivers/net/mlx4/mlx4_rxq.c
index 0cd9560..e8bef1d 100644 (file)
--- a/drivers/net/mlx4/mlx4_rxq.c
+++ b/drivers/net/mlx4/mlx4_rxq.c
@@ -338,6 +338,12 @@ mlx4_rss_init(struct priv *priv)
 
        if (priv->rss_init)
                return 0;
+       if (priv->dev->data->nb_rx_queues > priv->hw_rss_max_qps) {
+               ERROR("RSS does not support more than %d queues",
+                     priv->hw_rss_max_qps);
+               rte_errno = EINVAL;
+               return -rte_errno;
+       }
        /* Prepare range for RSS contexts before creating the first WQ. */
        ret = mlx4_glue->dv_set_context_attr
                (priv->ctx,