net/mlx5: E-Switch, Return eswitch max ports when eswitch is supported

mlx5_eswitch_get_total_vports() doesn't honor MLX5_ESWICH Kconfig flag.

When MLX5_ESWITCH is disabled, FS layer continues to initialize eswitch
specific ACL namespaces.
Instead, start honoring MLX5_ESWITCH flag and perform vport specific
initialization only when vport count is non zero.
Signed-off-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Vu Pham <vuhuong@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

drivers/net/ethernet/mellanox/mlx5/core/eswitch.c

@@ -2205,3 +2205,16 @@ void mlx5_esw_unlock(struct mlx5_eswitch *esw)
 {
 	up_write(&esw->mode_lock);
 }
+
+/**
+ * mlx5_eswitch_get_total_vports - Get total vports of the eswitch
+ *
+ * @dev: Pointer to core device
+ *
+ * mlx5_eswitch_get_total_vports returns total number of eswitch vports.
+ */
+u16 mlx5_eswitch_get_total_vports(const struct mlx5_core_dev *dev)
+{
+	return MLX5_SPECIAL_VPORTS(dev) + mlx5_core_max_vfs(dev) + mlx5_sf_max_functions(dev);
+}
+EXPORT_SYMBOL_GPL(mlx5_eswitch_get_total_vports);

drivers/net/ethernet/mellanox/mlx5/core/vport.c

@@ -1151,20 +1151,6 @@ u64 mlx5_query_nic_system_image_guid(struct mlx5_core_dev *mdev)
 }
 EXPORT_SYMBOL_GPL(mlx5_query_nic_system_image_guid);
 
-/**
- * mlx5_eswitch_get_total_vports - Get total vports of the eswitch
- *
- * @dev:	Pointer to core device
- *
- * mlx5_eswitch_get_total_vports returns total number of vports for
- * the eswitch.
- */
-u16 mlx5_eswitch_get_total_vports(const struct mlx5_core_dev *dev)
-{
-	return MLX5_SPECIAL_VPORTS(dev) + mlx5_core_max_vfs(dev) + mlx5_sf_max_functions(dev);
-}
-EXPORT_SYMBOL_GPL(mlx5_eswitch_get_total_vports);
-
 int mlx5_vport_get_other_func_cap(struct mlx5_core_dev *dev, u16 function_id, void *out)
 {
 	u16 opmod = (MLX5_CAP_GENERAL << 1) | (HCA_CAP_OPMOD_GET_MAX & 0x01);

include/linux/mlx5/eswitch.h

@@ -65,8 +65,6 @@ struct mlx5_flow_handle *
 mlx5_eswitch_add_send_to_vport_rule(struct mlx5_eswitch *on_esw,
 				    struct mlx5_eswitch_rep *rep, u32 sqn);
 
-u16 mlx5_eswitch_get_total_vports(const struct mlx5_core_dev *dev);
-
 #ifdef CONFIG_MLX5_ESWITCH
 enum devlink_eswitch_encap_mode
 mlx5_eswitch_get_encap_mode(const struct mlx5_core_dev *dev);
@@ -126,6 +124,8 @@ u32 mlx5_eswitch_get_vport_metadata_for_set(struct mlx5_eswitch *esw,
 #define ESW_TUN_SLOW_TABLE_GOTO_VPORT_MARK ESW_TUN_OPTS_MASK
 
 u8 mlx5_eswitch_mode(struct mlx5_core_dev *dev);
+u16 mlx5_eswitch_get_total_vports(const struct mlx5_core_dev *dev);
+
 #else  /* CONFIG_MLX5_ESWITCH */
 
 static inline u8 mlx5_eswitch_mode(struct mlx5_core_dev *dev)
@@ -162,10 +162,17 @@ mlx5_eswitch_get_vport_metadata_mask(void)
 {
 	return 0;
 }
+
+static inline u16 mlx5_eswitch_get_total_vports(const struct mlx5_core_dev *dev)
+{
+	return 0;
+}
+
 #endif /* CONFIG_MLX5_ESWITCH */
 
 static inline bool is_mdev_switchdev_mode(struct mlx5_core_dev *dev)
 {
 	return mlx5_eswitch_mode(dev) == MLX5_ESWITCH_OFFLOADS;
 }
+
 #endif