mlx4: constify args for const dev_addr

netdev->dev_addr will become const soon. Make sure all
functions which pass it around mark appropriate args
as const.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlx4/en_netdev.c

@@ -536,7 +536,8 @@ static void mlx4_en_u64_to_mac(struct net_device *dev, u64 src_mac)
 }
 
 
-static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
+static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv,
+				    const unsigned char *addr,
 				    int qpn, u64 *reg_id)
 {
 	int err;
@@ -557,7 +558,7 @@ static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *ad
 
 
 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
-				unsigned char *mac, int *qpn, u64 *reg_id)
+				const unsigned char *mac, int *qpn, u64 *reg_id)
 {
 	struct mlx4_en_dev *mdev = priv->mdev;
 	struct mlx4_dev *dev = mdev->dev;
@@ -609,7 +610,8 @@ static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 }
 
 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
-				     unsigned char *mac, int qpn, u64 reg_id)
+				     const unsigned char *mac,
+				     int qpn, u64 reg_id)
 {
 	struct mlx4_en_dev *mdev = priv->mdev;
 	struct mlx4_dev *dev = mdev->dev;

drivers/net/ethernet/mellanox/mlx4/mcg.c

@@ -1046,7 +1046,7 @@ int mlx4_flow_detach(struct mlx4_dev *dev, u64 reg_id)
 }
 EXPORT_SYMBOL_GPL(mlx4_flow_detach);
 
-int mlx4_tunnel_steer_add(struct mlx4_dev *dev, unsigned char *addr,
+int mlx4_tunnel_steer_add(struct mlx4_dev *dev, const unsigned char *addr,
 			  int port, int qpn, u16 prio, u64 *reg_id)
 {
 	int err;

include/linux/mlx4/device.h

@@ -1436,7 +1436,7 @@ int mlx4_map_sw_to_hw_steering_id(struct mlx4_dev *dev,
 				  enum mlx4_net_trans_rule_id id);
 int mlx4_hw_rule_sz(struct mlx4_dev *dev, enum mlx4_net_trans_rule_id id);
 
-int mlx4_tunnel_steer_add(struct mlx4_dev *dev, unsigned char *addr,
+int mlx4_tunnel_steer_add(struct mlx4_dev *dev, const unsigned char *addr,
 			  int port, int qpn, u16 prio, u64 *reg_id);
 
 void mlx4_sync_pkey_table(struct mlx4_dev *dev, int slave, int port,