[PATCH v2 2/4] net/mlx5: introduce new mlx5 action flag

[Michael Savisko <michaelsav@nvidia.com>]

Add new mlx5 action flag MLX5_FLOW_ACTION_SEND_TO_KERNEL.

Add element MLX5_FLOW_FATE_SEND_TO_KERNEL in enum mlx5_flow_fate_type.
For that purpose field 'fate_action' in structure mlx5_flow_handle must be
expanded from 3 bits to 4 bits.

Signed-off-by: Michael Savisko <michaelsav@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>
---
 drivers/net/mlx5/mlx5_flow.h    |  7 +++++--
 drivers/net/mlx5/mlx5_flow_dv.c | 17 +++++++++++++++++
 2 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_flow.h b/drivers/net/mlx5/mlx5_flow.h
index 0fa1735b1a..18a77ec619 100644
--- a/drivers/net/mlx5/mlx5_flow.h
+++ b/drivers/net/mlx5/mlx5_flow.h
@@ -277,12 +277,14 @@ enum mlx5_feature_name {
 #define MLX5_FLOW_ACTION_MODIFY_FIELD (1ull << 39)
 #define MLX5_FLOW_ACTION_METER_WITH_TERMINATED_POLICY (1ull << 40)
 #define MLX5_FLOW_ACTION_CT (1ull << 41)
+#define MLX5_FLOW_ACTION_SEND_TO_KERNEL (1ull << 42)
 
 #define MLX5_FLOW_FATE_ACTIONS \
 	(MLX5_FLOW_ACTION_DROP | MLX5_FLOW_ACTION_QUEUE | \
 	 MLX5_FLOW_ACTION_RSS | MLX5_FLOW_ACTION_JUMP | \
 	 MLX5_FLOW_ACTION_DEFAULT_MISS | \
-	 MLX5_FLOW_ACTION_METER_WITH_TERMINATED_POLICY)
+	 MLX5_FLOW_ACTION_METER_WITH_TERMINATED_POLICY | \
+	 MLX5_FLOW_ACTION_SEND_TO_KERNEL)
 
 #define MLX5_FLOW_FATE_ESWITCH_ACTIONS \
 	(MLX5_FLOW_ACTION_DROP | MLX5_FLOW_ACTION_PORT_ID | \
@@ -477,6 +479,7 @@ enum mlx5_flow_fate_type {
 	MLX5_FLOW_FATE_DEFAULT_MISS,
 	MLX5_FLOW_FATE_SHARED_RSS,
 	MLX5_FLOW_FATE_MTR,
+	MLX5_FLOW_FATE_SEND_TO_KERNEL,
 	MLX5_FLOW_FATE_MAX,
 };
 
@@ -709,7 +712,7 @@ struct mlx5_flow_handle {
 	void *drv_flow; /**< pointer to driver flow object. */
 	uint32_t split_flow_id:27; /**< Sub flow unique match flow id. */
 	uint32_t is_meter_flow_id:1; /**< Indicate if flow_id is for meter. */
-	uint32_t fate_action:3; /**< Fate action type. */
+	uint32_t fate_action:4; /**< Fate action type. */
 	union {
 		uint32_t rix_hrxq; /**< Hash Rx queue object index. */
 		uint32_t rix_jump; /**< Index to the jump action resource. */
diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 91f287af5c..6c355efed7 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -7970,6 +7970,12 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
 			 * list it here as a supported type
 			 */
 			break;
+#ifdef HAVE_MLX5DV_DR_ACTION_CREATE_DEST_ROOT_TABLE
+		case RTE_FLOW_ACTION_TYPE_SEND_TO_KERNEL:
+			action_flags |= MLX5_FLOW_ACTION_SEND_TO_KERNEL;
+			++actions_n;
+			break;
+#endif
 		default:
 			return rte_flow_error_set(error, ENOTSUP,
 						  RTE_FLOW_ERROR_TYPE_ACTION,
@@ -13694,6 +13700,11 @@ flow_dv_translate(struct rte_eth_dev *dev,
 			actions_n++;
 			action_flags |= MLX5_FLOW_ACTION_CT;
 			break;
+		case RTE_FLOW_ACTION_TYPE_SEND_TO_KERNEL:
+			return rte_flow_error_set(error, ENOTSUP,
+				RTE_FLOW_ERROR_TYPE_ACTION,
+				NULL, "send to kernel action is not supported.");
+			break;
 		case RTE_FLOW_ACTION_TYPE_END:
 			actions_end = true;
 			if (mhdr_res->actions_num) {
@@ -14742,6 +14753,12 @@ flow_dv_fate_resource_release(struct rte_eth_dev *dev,
 		flow_dv_port_id_action_resource_release(dev,
 				handle->rix_port_id_action);
 		break;
+	case MLX5_FLOW_FATE_SEND_TO_KERNEL:
+		/* In case of send_to_kernel action the actual release of
+		 * resource is done when all shared DR resources are released
+		 * since this resource is created once and always reused.
+		 */
+		break;
 	default:
 		DRV_LOG(DEBUG, "Incorrect fate action:%d", handle->fate_action);
 		break;
-- 
2.27.0