[PATCH 4.4 76/78] net/mlx5e: Only support tx/rx pause setting for port owner

[Greg Kroah-Hartman]

From: Huy Nguyen <h...@mellanox.com>

[ Upstream commit 466df6eb4a9e813b3cfc674363316450c57a89c5 ]

Only support changing tx/rx pause frame setting if the net device
is the vport group manager.

Fixes: 3c2d18ef22df ("net/mlx5e: Support ethtool get/set_pauseparam")
Signed-off-by: Huy Nguyen <h...@mellanox.com>
Reviewed-by: Parav Pandit <pa...@mellanox.com>
Signed-off-by: Saeed Mahameed <sae...@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
@@ -855,6 +855,9 @@ static int mlx5e_set_pauseparam(struct n
        struct mlx5_core_dev *mdev = priv->mdev;
        int err;
 
+       if (!MLX5_CAP_GEN(mdev, vport_group_manager))
+               return -EOPNOTSUPP;
+
        if (pauseparam->autoneg)
                return -EINVAL;