[PATCH 8/8] net/mlx5: validate the actions combination with NAT64

[Bing Zhao <bingz@nvidia.com>]

NAT64 is treated as a modify header action. The action order and
limitation should be the same as that of modify header in each
domain.

Since the last 2 TAG registers will be used implicitly in the
address backup mode, the values in these registers are no longer
valid after the NAT64 action. The application should not try to
match these TAGs after the rule that contains NAT64 action.

Signed-off-by: Bing Zhao <bingz@nvidia.com>
---
 drivers/net/mlx5/mlx5_flow.h    | 1 +
 drivers/net/mlx5/mlx5_flow_hw.c | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/drivers/net/mlx5/mlx5_flow.h b/drivers/net/mlx5/mlx5_flow.h
index 81026632ed..6bdd350aef 100644
--- a/drivers/net/mlx5/mlx5_flow.h
+++ b/drivers/net/mlx5/mlx5_flow.h
@@ -376,6 +376,7 @@ enum mlx5_feature_name {
 #define MLX5_FLOW_ACTION_PORT_REPRESENTOR (1ull << 47)
 #define MLX5_FLOW_ACTION_IPV6_ROUTING_REMOVE (1ull << 48)
 #define MLX5_FLOW_ACTION_IPV6_ROUTING_PUSH (1ull << 49)
+#define MLX5_FLOW_ACTION_NAT64 (1ull << 50)
 
 #define MLX5_FLOW_DROP_INCLUSIVE_ACTIONS \
 	(MLX5_FLOW_ACTION_COUNT | MLX5_FLOW_ACTION_SAMPLE | MLX5_FLOW_ACTION_AGE)
diff --git a/drivers/net/mlx5/mlx5_flow_hw.c b/drivers/net/mlx5/mlx5_flow_hw.c
index 9b60233549..09ae49faa4 100644
--- a/drivers/net/mlx5/mlx5_flow_hw.c
+++ b/drivers/net/mlx5/mlx5_flow_hw.c
@@ -5841,6 +5841,10 @@ mlx5_flow_hw_actions_validate(struct rte_eth_dev *dev,
 				MLX5_HW_VLAN_PUSH_VID_IDX;
 			action_flags |= MLX5_FLOW_ACTION_OF_PUSH_VLAN;
 			break;
+		case RTE_FLOW_ACTION_TYPE_NAT64:
+			/* TODO: Validation logic */
+			action_flags |= MLX5_FLOW_ACTION_NAT64;
+			break;
 		case RTE_FLOW_ACTION_TYPE_END:
 			actions_end = true;
 			break;
-- 
2.25.1