[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 <haij...@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