[PATCH] regex/mlx5: add check for nb max matches

[Gerry Gribbon]

Added check so user gets error if they try to configure the
nb_max_matches value when using rte_regexdev_configure().

Signed-off-by: Gerry Gribbon <ggribbon at nvidia.com>
Acked-by: Ori Kam <orika at nvidia.com>
---
 drivers/regex/mlx5/mlx5_rxp.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/regex/mlx5/mlx5_rxp.c b/drivers/regex/mlx5/mlx5_rxp.c
index ed3af15e40..47d32b7dd7 100644
--- a/drivers/regex/mlx5/mlx5_rxp.c
+++ b/drivers/regex/mlx5/mlx5_rxp.c
@@ -144,6 +144,11 @@ mlx5_regex_configure(struct rte_regexdev *dev,
 
 	if (priv->prog_mode == MLX5_RXP_MODE_NOT_DEFINED)
 		return -1;
+	if (cfg->nb_max_matches != MLX5_REGEX_MAX_MATCHES) {
+		DRV_LOG(ERR, "nb_max_matches is not configurable.");
+		rte_errno = EINVAL;
+		return -rte_errno;
+	}
 	priv->nb_queues = cfg->nb_queue_pairs;
 	dev->data->dev_conf.nb_queue_pairs = priv->nb_queues;
 	priv->qps = rte_zmalloc(NULL, sizeof(struct mlx5_regex_qp) *
-- 
2.25.1