[PATCH net-next 09/13] net/mlx5: LAG, block multipath LAG for SD devices

[Tariq Toukan]

From: Shay Drory <shayd@xxxxxxxxxx>

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@xxxxxxxxxx>
Reviewed-by: Mark Bloch <mbloch@xxxxxxxxxx>
Signed-off-by: Tariq Toukan <tariqt@xxxxxxxxxx>
---
 drivers/net/ethernet/mellanox/mlx5/core/lag/mp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag/mp.c b/drivers/net/ethernet/mellanox/mlx5/core/lag/mp.c
index f42e051fa7e7..65c76bd748c6 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag/mp.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag/mp.c
@@ -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;
 
-- 
2.44.0