From: Mark Bloch Date: Tue, 1 Mar 2022 17:24:40 +0000 (+0000) Subject: net/mlx5: Lag, support single FDB only on 2 ports X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e2c45931ff124381e6389c5e226a9527ff8c9969;p=linux.git 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: Mark Bloch Reviewed-by: Maor Gottlieb Signed-off-by: Saeed Mahameed --- diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c index deac240e6d785..4678b50b7e184 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c @@ -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));