net/mlx5e: vxlan.c depends on CONFIG_VXLAN

When vxlan is not enabled by kernel, no need to enable it in mlx5.
Compile out lib/vxlan.c if CONFIG_VXLAN is not selected.
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Moshe Shemesh <moshe@mellanox.com>
Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com>

drivers/net/ethernet/mellanox/mlx5/core/Kconfig

@@ -7,6 +7,7 @@ config MLX5_CORE
 	depends on MAY_USE_DEVLINK
 	depends on PCI
 	imply PTP_1588_CLOCK
+	imply VXLAN
 	default n
 	---help---
 	  Core driver for low level functionality of the ConnectX-4 and

drivers/net/ethernet/mellanox/mlx5/core/Makefile

@@ -13,15 +13,16 @@ mlx5_core-$(CONFIG_MLX5_ACCEL) += accel/ipsec.o accel/tls.o
 mlx5_core-$(CONFIG_MLX5_FPGA) += fpga/cmd.o fpga/core.o fpga/conn.o fpga/sdk.o \
 		fpga/ipsec.o fpga/tls.o
 
+mlx5_core-$(CONFIG_MLX5_MPFS)  += lib/mpfs.o
+mlx5_core-$(CONFIG_VXLAN) += lib/vxlan.o
+
 mlx5_core-$(CONFIG_MLX5_CORE_EN) += en_main.o en_common.o en_fs.o en_ethtool.o \
 		en_tx.o en_rx.o en_dim.o en_txrx.o en/xdp.o en_stats.o \
-		en_selftest.o en/port.o lib/vxlan.o
+		en_selftest.o en/port.o
 
 mlx5_core-$(CONFIG_MLX5_EN_ARFS)  += en_arfs.o
 mlx5_core-$(CONFIG_MLX5_EN_RXNFC) += en_fs_ethtool.o
 
-mlx5_core-$(CONFIG_MLX5_MPFS) += lib/mpfs.o
-
 mlx5_core-$(CONFIG_MLX5_ESWITCH) += eswitch.o eswitch_offloads.o en_rep.o en_tc.o
 
 mlx5_core-$(CONFIG_MLX5_CORE_EN_DCB) +=  en_dcbnl.o en/port_buffer.o

drivers/net/ethernet/mellanox/mlx5/core/lib/vxlan.h

@@ -37,8 +37,6 @@
 struct mlx5_vxlan;
 struct mlx5_vxlan_port;
 
-#ifdef CONFIG_MLX5_CORE_EN
-
 static inline bool mlx5_vxlan_allowed(struct mlx5_vxlan *vxlan)
 {
 	/* not allowed reason is encoded in vxlan pointer as error,
@@ -47,18 +45,20 @@ static inline bool mlx5_vxlan_allowed(struct mlx5_vxlan *vxlan)
 	return !IS_ERR_OR_NULL(vxlan);
 }
 
+#if IS_ENABLED(CONFIG_VXLAN)
 struct mlx5_vxlan *mlx5_vxlan_create(struct mlx5_core_dev *mdev);
 void mlx5_vxlan_destroy(struct mlx5_vxlan *vxlan);
 int mlx5_vxlan_add_port(struct mlx5_vxlan *vxlan, u16 port);
 int mlx5_vxlan_del_port(struct mlx5_vxlan *vxlan, u16 port);
 struct mlx5_vxlan_port *mlx5_vxlan_lookup_port(struct mlx5_vxlan *vxlan, u16 port);
-
 #else
-
 static inline struct mlx5_vxlan*
-mlx5_vxlan_create(struct mlx5_core_dev *mdev) { return ERR_PTR(-ENOTSUPP); }
+mlx5_vxlan_create(struct mlx5_core_dev *mdev) { return ERR_PTR(-EOPNOTSUPP); }
 static inline void mlx5_vxlan_destroy(struct mlx5_vxlan *vxlan) { return; }
-
+static inline int mlx5_vxlan_add_port(struct mlx5_vxlan *vxlan, u16 port) { return -EOPNOTSUPP; }
+static inline int mlx5_vxlan_del_port(struct mlx5_vxlan *vxlan, u16 port) { return -EOPNOTSUPP; }
+static inline struct mx5_vxlan_port*
+mlx5_vxlan_lookup_port(struct mlx5_vxlan *vxlan, u16 port) { return NULL; }
 #endif
 
 #endif /* __MLX5_VXLAN_H__ */