From: Boris Pismenny <borisp@mellanox.com>
Date: Wed, 28 Mar 2018 09:27:43 +0300
Subject: IB/mlx4: Check for egress flow steering
Patch-mainline: v4.17-rc1
Git-commit: 8510020d2916b9f7d8e406aa2fb2d35fbe692f4d
References: bsc#1103988 FATE#326003

ConnectX3 doesn't support egress flow steering. Return an EOPNOTSUPP
error when such a flow is being created.

Signed-off-by: Boris Pismenny <borisp@mellanox.com>
Reviewed-by: Aviad Yehezkel <aviadye@mellanox.com>
Reviewed-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/hw/mlx4/main.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -1858,6 +1858,9 @@ static struct ib_flow *mlx4_ib_create_fl
 	if (flow_attr->port < 1 || flow_attr->port > qp->device->phys_port_cnt)
 		return ERR_PTR(-EINVAL);
 
+	if (flow_attr->flags & ~IB_FLOW_ATTR_FLAGS_DONT_TRAP)
+		return ERR_PTR(-EOPNOTSUPP);
+
 	if ((flow_attr->flags & IB_FLOW_ATTR_FLAGS_DONT_TRAP) &&
 	    (flow_attr->type != IB_FLOW_ATTR_NORMAL))
 		return ERR_PTR(-EOPNOTSUPP);