Commit e2c45931 authored by Mark Bloch's avatar Mark Bloch Committed by Saeed Mahameed
Browse files

net/mlx5: Lag, support single FDB only on 2 ports 



E-Switch currently doesn't support more than 2 E-Switch managers
being aggregated under a single hardware lag. Have specific checks
to disallow creating lag when the code doesn't support it.

Signed-off-by: default avatarMark Bloch <mbloch@nvidia.com>
Reviewed-by: default avatarMaor Gottlieb <maorg@nvidia.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@nvidia.com>
parent e9d5bb51

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

+4 −0
Original line number Diff line number Diff line
@@ -458,6 +458,7 @@ static int mlx5_deactivate_lag(struct mlx5_lag *ldev) 
	return 0;

}



#define MLX5_LAG_OFFLOADS_SUPPORTED_PORTS 2

static bool mlx5_lag_check_prereq(struct mlx5_lag *ldev)

{

#ifdef CONFIG_MLX5_ESWITCH
@@ -470,6 +471,9 @@ static bool mlx5_lag_check_prereq(struct mlx5_lag *ldev) 
#ifdef CONFIG_MLX5_ESWITCH

	mode = mlx5_eswitch_mode(ldev->pf[MLX5_LAG_P1].dev);



	if (mode == MLX5_ESWITCH_OFFLOADS && ldev->ports != MLX5_LAG_OFFLOADS_SUPPORTED_PORTS)

		return false;



	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));