net/mlx5: Lag, move E-Switch prerequisite check into lag code

There is no need to expose E-Switch function for something that can be
checked with already present API inside lag code.
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

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

@@ -1893,17 +1893,6 @@ mlx5_eswitch_get_encap_mode(const struct mlx5_core_dev *dev)
 }
 EXPORT_SYMBOL(mlx5_eswitch_get_encap_mode);
 
-bool mlx5_esw_lag_prereq(struct mlx5_core_dev *dev0, struct mlx5_core_dev *dev1)
-{
-	if ((dev0->priv.eswitch->mode == MLX5_ESWITCH_NONE &&
-	     dev1->priv.eswitch->mode == MLX5_ESWITCH_NONE) ||
-	    (dev0->priv.eswitch->mode == MLX5_ESWITCH_OFFLOADS &&
-	     dev1->priv.eswitch->mode == MLX5_ESWITCH_OFFLOADS))
-		return true;
-
-	return false;
-}
-
 bool mlx5_esw_multipath_prereq(struct mlx5_core_dev *dev0,
 			       struct mlx5_core_dev *dev1)
 {

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

@@ -518,8 +518,6 @@ static inline bool mlx5_eswitch_vlan_actions_supported(struct mlx5_core_dev *dev
 		MLX5_CAP_ESW_FLOWTABLE_FDB(dev, push_vlan_2);
 }
 
-bool mlx5_esw_lag_prereq(struct mlx5_core_dev *dev0,
-			 struct mlx5_core_dev *dev1);
 bool mlx5_esw_multipath_prereq(struct mlx5_core_dev *dev0,
 			       struct mlx5_core_dev *dev1);
 
@@ -724,7 +722,6 @@ static inline int  mlx5_eswitch_init(struct mlx5_core_dev *dev) { return 0; }
 static inline void mlx5_eswitch_cleanup(struct mlx5_eswitch *esw) {}
 static inline int mlx5_eswitch_enable(struct mlx5_eswitch *esw, int num_vfs) { return 0; }
 static inline void mlx5_eswitch_disable(struct mlx5_eswitch *esw, bool clear_vf) {}
-static inline bool mlx5_esw_lag_prereq(struct mlx5_core_dev *dev0, struct mlx5_core_dev *dev1) { return true; }
 static inline bool mlx5_eswitch_is_funcs_handler(struct mlx5_core_dev *dev) { return false; }
 static inline
 int mlx5_eswitch_set_vport_state(struct mlx5_eswitch *esw, u16 vport, int link_state) { return 0; }

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

@@ -457,12 +457,19 @@ static int mlx5_deactivate_lag(struct mlx5_lag *ldev)
 
 static bool mlx5_lag_check_prereq(struct mlx5_lag *ldev)
 {
+#ifdef CONFIG_MLX5_ESWITCH
+	u8 mode;
+#endif
+
 	if (!ldev->pf[MLX5_LAG_P1].dev || !ldev->pf[MLX5_LAG_P2].dev)
 		return false;
 
 #ifdef CONFIG_MLX5_ESWITCH
-	return mlx5_esw_lag_prereq(ldev->pf[MLX5_LAG_P1].dev,
-				   ldev->pf[MLX5_LAG_P2].dev);
+	mode = mlx5_eswitch_mode(ldev->pf[MLX5_LAG_P1].dev);
+
+	return (mode == MLX5_ESWITCH_NONE || mode == MLX5_ESWITCH_OFFLOADS) &&
+		(mlx5_eswitch_mode(ldev->pf[MLX5_LAG_P1].dev) ==
+		 mlx5_eswitch_mode(ldev->pf[MLX5_LAG_P2].dev));
 #else
 	return (!mlx5_sriov_is_enabled(ldev->pf[MLX5_LAG_P1].dev) &&
 		!mlx5_sriov_is_enabled(ldev->pf[MLX5_LAG_P2].dev));