From: Michael Guralnik <michaelgur@mellanox.com>
Date: Mon, 3 Aug 2020 08:58:49 +0300
Subject: RDMA/mlx5: Fix flow destination setting for RDMA TX flow table
Patch-mainline: v5.9-rc1
Git-commit: 23fcc7dee2c6aba1060558683988263851e74bab
References: jsc#SLE-15175

For RDMA TX flow table, set destination type to be 'port' and prevent
creation of flows with TIR destination.

As RDMA TX is an egress flow table the rules on this flow table should
not forward traffic back to the NIC and should set the destination to be
the port.

Without the setting of this destination type flow rules on the RDMA TX
flow tables are not created as FW invokes a syndrome for undefined
destination for the rule.

Fixes: 24670b1a3166 ("net/mlx5: Add support for RDMA TX steering")
Link: https://lore.kernel.org/r/20200803055849.14947-1-leon@kernel.org
Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/hw/mlx5/fs.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/infiniband/hw/mlx5/fs.c
+++ b/drivers/infiniband/hw/mlx5/fs.c
@@ -1865,12 +1865,14 @@ static int get_dests(struct uverbs_attr_
 		else
 			*dest_id = mqp->raw_packet_qp.rq.tirn;
 		*dest_type = MLX5_FLOW_DESTINATION_TYPE_TIR;
-	} else if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_EGRESS) {
+	} else if (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_EGRESS ||
+		   fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_TX) {
 		*dest_type = MLX5_FLOW_DESTINATION_TYPE_PORT;
 	}
 
 	if (*dest_type == MLX5_FLOW_DESTINATION_TYPE_TIR &&
-	    fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_EGRESS)
+	    (fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_EGRESS ||
+	     fs_matcher->ns_type == MLX5_FLOW_NAMESPACE_RDMA_TX))
 		return -EINVAL;
 
 	return 0;