From: Yevgeny Kliteynik <kliteyn@mellanox.com>
Date: Mon, 20 Jan 2020 11:51:36 +0200
Subject: net/mlx5: DR, Allow connecting flow table to a lower/same level table
Patch-mainline: v5.6-rc1
Git-commit: 4c7cea2f31f1dde9c578e4729e0d34f340052037
References: jsc#SLE-8464

Allow connecting SW steering source table to a lower/same level
destination table.
Lifting this limitation is required to support Connection Tracking.

Signed-off-by: Yevgeny Kliteynik <kliteyn@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/dr_action.c
@@ -677,9 +677,12 @@ int mlx5dr_actions_build_ste_arr(struct
 					goto out_invalid_arg;
 				}
 				if (action->dest_tbl.tbl->level <= matcher->tbl->level) {
+					mlx5_core_warn_once(dmn->mdev,
+							    "Connecting table to a lower/same level destination table\n");
 					mlx5dr_dbg(dmn,
-						   "Destination table level should be higher than source table\n");
-					goto out_invalid_arg;
+						   "Connecting table at level %d to a destination table at level %d\n",
+						   matcher->tbl->level,
+						   action->dest_tbl.tbl->level);
 				}
 				attr.final_icm_addr = rx_rule ?
 					action->dest_tbl.tbl->rx.s_anchor->chunk->icm_addr :