[PATCH v5 28/40] net/ngbe: : 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/ngbe/ngbe_ethdev.c | 6 +++++-
 drivers/net/ngbe/ngbe_rxtx.c   | 3 +++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ngbe/ngbe_ethdev.c b/drivers/net/ngbe/ngbe_ethdev.c
index 478da014b2f8..bb4b8afb0a80 100644
--- a/drivers/net/ngbe/ngbe_ethdev.c
+++ b/drivers/net/ngbe/ngbe_ethdev.c
@@ -921,8 +921,12 @@ ngbe_dev_configure(struct rte_eth_dev *dev)
 
 	PMD_INIT_FUNC_TRACE();
 
-	if (dev->data->dev_conf.rxmode.mq_mode & RTE_ETH_MQ_RX_RSS_FLAG)
+	if (dev->data->dev_conf.rxmode.mq_mode & RTE_ETH_MQ_RX_RSS_FLAG) {
+		if (dev->data->dev_conf.rx_adv_conf.rss_conf.algorithm !=
+		    RTE_ETH_HASH_FUNCTION_DEFAULT)
+			return -EINVAL;
 		dev->data->dev_conf.rxmode.offloads |= RTE_ETH_RX_OFFLOAD_RSS_HASH;
+	}
 
 	/* set flag to update link status after init */
 	intr->flags |= NGBE_FLAG_NEED_LINK_UPDATE;
diff --git a/drivers/net/ngbe/ngbe_rxtx.c b/drivers/net/ngbe/ngbe_rxtx.c
index f31906cc2fe3..0b22d567fcb6 100644
--- a/drivers/net/ngbe/ngbe_rxtx.c
+++ b/drivers/net/ngbe/ngbe_rxtx.c
@@ -2500,6 +2500,9 @@ ngbe_dev_rss_hash_update(struct rte_eth_dev *dev,
 		return -ENOTSUP;
 	}
 
+	if (rss_conf->algorithm != RTE_ETH_HASH_FUNCTION_DEFAULT)
+		return -EINVAL;
+
 	hash_key = rss_conf->rss_key;
 	if (hash_key) {
 		/* Fill in RSS hash key */
-- 
2.30.0