[PATCH net-next 17/18] net/mlx5e: Lock device state in set features

[Saeed Mahameed]

From: Maor Gottlieb <ma...@mellanox.com>

Lock device state in mlx5e_set_features, rather than make each set
feature handler lock it itself.

Signed-off-by: Maor Gottlieb <ma...@mellanox.com>
Signed-off-by: Saeed Mahameed <sae...@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c 
b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 982f852..94d6f60 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -2247,7 +2247,6 @@ static int set_feature_lro(struct net_device *netdev, 
bool enable)
        bool was_opened = test_bit(MLX5E_STATE_OPENED, &priv->state);
        int err;
 
-       mutex_lock(&priv->state_lock);
 
        if (was_opened && (priv->params.rq_wq_type == MLX5_WQ_TYPE_LINKED_LIST))
                mlx5e_close_locked(priv->netdev);
@@ -2262,8 +2261,6 @@ static int set_feature_lro(struct net_device *netdev, 
bool enable)
        if (was_opened && (priv->params.rq_wq_type == MLX5_WQ_TYPE_LINKED_LIST))
                mlx5e_open_locked(priv->netdev);
 
-       mutex_unlock(&priv->state_lock);
-
        return err;
 }
 
@@ -2305,15 +2302,11 @@ static int set_feature_rx_vlan(struct net_device 
*netdev, bool enable)
        struct mlx5e_priv *priv = netdev_priv(netdev);
        int err;
 
-       mutex_lock(&priv->state_lock);
-
        priv->params.vlan_strip_disable = !enable;
        err = mlx5e_modify_rqs_vsd(priv, !enable);
        if (err)
                priv->params.vlan_strip_disable = enable;
 
-       mutex_unlock(&priv->state_lock);
-
        return err;
 }
 
@@ -2358,8 +2351,11 @@ static int mlx5e_handle_feature(struct net_device 
*netdev,
 static int mlx5e_set_features(struct net_device *netdev,
                              netdev_features_t features)
 {
+       struct mlx5e_priv *priv = netdev_priv(netdev);
        int err;
 
+       mutex_lock(&priv->state_lock);
+
        err  = mlx5e_handle_feature(netdev, features, NETIF_F_LRO,
                                    set_feature_lro);
        err |= mlx5e_handle_feature(netdev, features,
@@ -2376,6 +2372,8 @@ static int mlx5e_set_features(struct net_device *netdev,
                                    set_feature_arfs);
 #endif
 
+       mutex_unlock(&priv->state_lock);
+
        return err ? -EINVAL : 0;
 }
 
-- 
2.8.0