[PATCH v2 4/9] net/mlx5: fix flex item tunnel mode handling

[Viacheslav Ovsiienko <viacheslavo@nvidia.com>]

The RTE flex item can represent tunnel header itself,
and split inner and outer items, it should be reflected
in the item flags while PMD is processing the item array.

Fixes: 8c0ca7527bc8 ("net/mlx5/hws: support flex item matching")
Cc: stable@dpdk.org

Signed-off-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
---
 drivers/net/mlx5/mlx5_flow_hw.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/mlx5/mlx5_flow_hw.c b/drivers/net/mlx5/mlx5_flow_hw.c
index 50888944a5..a275154d4b 100644
--- a/drivers/net/mlx5/mlx5_flow_hw.c
+++ b/drivers/net/mlx5/mlx5_flow_hw.c
@@ -558,6 +558,7 @@ flow_hw_matching_item_flags_get(const struct rte_flow_item items[])
 	uint64_t last_item = 0;
 
 	for (; items->type != RTE_FLOW_ITEM_TYPE_END; items++) {
+		enum rte_flow_item_flex_tunnel_mode tunnel_mode = FLEX_TUNNEL_MODE_SINGLE;
 		int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
 		int item_type = items->type;
 
@@ -606,6 +607,13 @@ flow_hw_matching_item_flags_get(const struct rte_flow_item items[])
 		case RTE_FLOW_ITEM_TYPE_COMPARE:
 			last_item = MLX5_FLOW_ITEM_COMPARE;
 			break;
+		case RTE_FLOW_ITEM_TYPE_FLEX:
+			mlx5_flex_get_tunnel_mode(items, &tunnel_mode);
+			last_item = tunnel_mode == FLEX_TUNNEL_MODE_TUNNEL ?
+					MLX5_FLOW_ITEM_FLEX_TUNNEL :
+					tunnel ? MLX5_FLOW_ITEM_INNER_FLEX :
+						MLX5_FLOW_ITEM_OUTER_FLEX;
+			break;
 		default:
 			break;
 		}
-- 
2.34.1