[PATCH v5 25/40] net/mlx5: check RSS hash algorithms

[Jie Hai]

A new field 'algorithm' has been added to rss_conf, check it
in case of ignoring unsupported values.

Signed-off-by: Jie Hai <haijie1 at huawei.com>
---
 drivers/net/mlx5/mlx5_ethdev.c | 4 ++++
 drivers/net/mlx5/mlx5_rss.c    | 3 ++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index 4a85415ff38d..5437fa531738 100644
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -74,6 +74,10 @@ mlx5_dev_configure(struct rte_eth_dev *dev)
 		!!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
 	int ret = 0;
 
+	if (dev->data->dev_conf.rx_adv_conf.rss_conf.algorithm !=
+		RTE_ETH_HASH_FUNCTION_DEFAULT)
+		return -EINVAL;
+
 	if (use_app_rss_key &&
 	    (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
 	     MLX5_RSS_HASH_KEY_LEN)) {
diff --git a/drivers/net/mlx5/mlx5_rss.c b/drivers/net/mlx5/mlx5_rss.c
index e2b478b75ce7..25c410e6010a 100644
--- a/drivers/net/mlx5/mlx5_rss.c
+++ b/drivers/net/mlx5/mlx5_rss.c
@@ -37,7 +37,8 @@ mlx5_rss_hash_update(struct rte_eth_dev *dev,
 	unsigned int i;
 	unsigned int idx;
 
-	if (rss_conf->rss_hf & MLX5_RSS_HF_MASK) {
+	if (rss_conf->rss_hf & MLX5_RSS_HF_MASK ||
+	    rss_conf->algorithm != RTE_ETH_HASH_FUNCTION_DEFAULT) {
 		rte_errno = EINVAL;
 		return -rte_errno;
 	}
-- 
2.30.0