[PATCH 2/2] net/mlx5: reset promiscuous modes on device close

[David Marchand <david.marchand@redhat.com>]

Since the DPDK port is backed by a kernel netdevice, leaving this
netdevice in promiscuous mode may have unexpected consequences.

Reset promiscuous and all multicast modes on close.

Fixes: dd4bb90bc3cb ("net/mlx5: use Netlink to enable promisc/allmulti mode")
Cc: stable@dpdk.org

Signed-off-by: David Marchand <david.marchand@redhat.com>
---
 drivers/net/mlx5/mlx5.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index 3fa38694e5..c7b0d3ef8b 100644
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -2498,6 +2498,16 @@ mlx5_dev_close(struct rte_eth_dev *dev)
 		mlx5_free(priv->rss_conf.rss_key);
 	if (priv->reta_idx != NULL)
 		mlx5_free(priv->reta_idx);
+	if (priv->sh->dev_cap.vf || priv->sh->dev_cap.sf) {
+		if (mlx5_os_get_promisc(dev)) {
+			DRV_LOG(DEBUG, "port %u resetting promiscuous mode", dev->data->port_id);
+			mlx5_os_set_promisc(dev, 0);
+		}
+		if (mlx5_os_get_allmulti(dev)) {
+			DRV_LOG(DEBUG, "port %u resetting all multicast mode", dev->data->port_id);
+			mlx5_os_set_allmulti(dev, 0);
+		}
+	}
 	if (sh->dev_cap.vf)
 		mlx5_os_mac_addr_flush(dev);
 	if (priv->nl_socket_route >= 0)
-- 
2.54.0