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net/mlx5: LAG, block multipath LAG for SD devices

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SD devices are not compatible with multipath LAG since they use
dedicated SD LAG for cross-socket connectivity. Add an SD check
to the multipath prereq validation to prevent multipath LAG
activation on SD-configured ports.

Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260531113954.395443-10-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Shay Drory 2026-05-31 14:39:49 +03:00 committed by Jakub Kicinski
parent 8b9fffb6d3
commit c3933a7a7f
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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@ -26,6 +26,10 @@ 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 (__mlx5_lag_is_sd(ldev, mlx5_lag_pf(ldev, idx0)->dev) ||
__mlx5_lag_is_sd(ldev, mlx5_lag_pf(ldev, idx1)->dev))
return false;
if (ldev->ports > MLX5_LAG_MULTIPATH_OFFLOADS_SUPPORTED_PORTS)
return false;