net/mlx4_en: Block insertion of ethtool steering rules while the interface is down

Attaching steering rules while the interface is down is an invalid operation, block it.

Signed-off-by: Hadar Hen Zion <hadarh@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
index f36c219dffcf..6f8044daec42 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
@@ -1006,7 +1006,8 @@ static int mlx4_en_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
         if ((cmd->cmd == ETHTOOL_GRXCLSRLCNT ||
              cmd->cmd == ETHTOOL_GRXCLSRULE ||
              cmd->cmd == ETHTOOL_GRXCLSRLALL) &&
-            mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_DEVICE_MANAGED)
+            (mdev->dev->caps.steering_mode !=
+             MLX4_STEERING_MODE_DEVICE_MANAGED || !priv->port_up))
                 return -EINVAL;
 
         switch (cmd->cmd) {
@@ -1042,7 +1043,8 @@ static int mlx4_en_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
         struct mlx4_en_priv *priv = netdev_priv(dev);
         struct mlx4_en_dev *mdev = priv->mdev;
 
-        if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_DEVICE_MANAGED)
+        if (mdev->dev->caps.steering_mode !=
+            MLX4_STEERING_MODE_DEVICE_MANAGED || !priv->port_up)
                 return -EINVAL;
 
         switch (cmd->cmd) {