[PATCH 4.7 127/141] IB/mlx5: Enable MAD_IFC commands for IB ports only

[Greg Kroah-Hartman]

4.7-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Noa Osherovich <noaos@xxxxxxxxxxxx>

commit 7fae6655a0c897875bd34501ec092232b526d3e4 upstream.

MAD_IFC command is supported only for physical functions (PF)
and when physical port is IB. The proposed fix enforces it.

Fixes: d603c809ef91 ("IB/mlx5: Fix decision on using MAD_IFC")
Reported-by: David Chang <dchang@xxxxxxxx>
Signed-off-by: Noa Osherovich <noaos@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx>
Signed-off-by: Doug Ledford <dledford@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/infiniband/hw/mlx5/main.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -287,7 +287,9 @@ __be16 mlx5_get_roce_udp_sport(struct ml
 
 static int mlx5_use_mad_ifc(struct mlx5_ib_dev *dev)
 {
-	return !MLX5_CAP_GEN(dev->mdev, ib_virt);
+	if (MLX5_CAP_GEN(dev->mdev, port_type) == MLX5_CAP_PORT_TYPE_IB)
+		return !MLX5_CAP_GEN(dev->mdev, ib_virt);
+	return 0;
 }
 
 enum {