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net/mlx5: LAG, block multipath LAG in case ldev have more than 2 ports

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multipath LAG is not supported over more than two ports. Add a check in
order to block multipath LAG over such configurations.

Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Shay Drory 2023-06-06 00:12:10 -07:00 committed by Saeed Mahameed
parent c83e6ab96e
commit d61bab3961
1 changed files with 4 additions and 0 deletions
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4
drivers/net/ethernet/mellanox/mlx5/core/lag/mp.c
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@ -14,6 +14,7 @@ static bool __mlx5_lag_is_multipath(struct mlx5_lag *ldev)
return ldev->mode == MLX5_LAG_MODE_MULTIPATH;
}
#define MLX5_LAG_MULTIPATH_OFFLOADS_SUPPORTED_PORTS 2
static bool mlx5_lag_multipath_check_prereq(struct mlx5_lag *ldev)
{
if (!mlx5_lag_is_ready(ldev))
@ -22,6 +23,9 @@ static bool mlx5_lag_multipath_check_prereq(struct mlx5_lag *ldev)
if (__mlx5_lag_is_active(ldev) && !__mlx5_lag_is_multipath(ldev))
return false;
if (ldev->ports > MLX5_LAG_MULTIPATH_OFFLOADS_SUPPORTED_PORTS)
return false;
return mlx5_esw_multipath_prereq(ldev->pf[MLX5_LAG_P1].dev,
ldev->pf[MLX5_LAG_P2].dev);
}