From: Huy Nguyen <huyn@mellanox.com>
Date: Thu, 1 Aug 2019 16:10:19 +0000 (-0500)
Subject: net/mlx5e: Only support tx/rx pause setting for port owner
X-Git-Tag: v5.2.10~17
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=168c2657487adda4239321ba22d38dd8b51d2fb7;p=users%2Fdwmw2%2Flinux.git

net/mlx5e: Only support tx/rx pause setting for port owner

[ 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 <huyn@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
index f637d81f08bcb..22d5101769651 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
@@ -1317,6 +1317,9 @@ int mlx5e_ethtool_set_pauseparam(struct mlx5e_priv *priv,
 	struct mlx5_core_dev *mdev = priv->mdev;
 	int err;
 
+	if (!MLX5_CAP_GEN(mdev, vport_group_manager))
+		return -EOPNOTSUPP;
+
 	if (pauseparam->autoneg)
 		return -EINVAL;