[dpdk-dev] [PATCH v7 4/7] net/mlx5: add NVGRE encap action to Direct Verbs

[Dekel Peled <dekelp@mellanox.com>]

This patch implements the nvgre encap action in DV flow for MLX5 PMD.

Signed-off-by: Dekel Peled <dekelp@mellanox.com>
---
 drivers/net/mlx5/mlx5_flow.h    |  4 ++++
 drivers/net/mlx5/mlx5_flow_dv.c | 37 ++++++++++++++++++++++++++++++++-----
 2 files changed, 36 insertions(+), 5 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_flow.h b/drivers/net/mlx5/mlx5_flow.h
index 8955a12..c03a3af 100644
--- a/drivers/net/mlx5/mlx5_flow.h
+++ b/drivers/net/mlx5/mlx5_flow.h
@@ -94,10 +94,14 @@
 #define MLX5_FLOW_ACTION_SET_MAC_DST (1u << 21)
 #define MLX5_FLOW_ACTION_VXLAN_ENCAP (1u << 22)
 #define MLX5_FLOW_ACTION_VXLAN_DECAP (1u << 23)
+#define MLX5_FLOW_ACTION_NVGRE_ENCAP (1u << 24)
 
 #define MLX5_FLOW_FATE_ACTIONS \
 	(MLX5_FLOW_ACTION_DROP | MLX5_FLOW_ACTION_QUEUE | MLX5_FLOW_ACTION_RSS)
 
+#define MLX5_FLOW_ENCAP_ACTIONS	\
+	(MLX5_FLOW_ACTION_VXLAN_ENCAP | MLX5_FLOW_ACTION_NVGRE_ENCAP)
+
 #ifndef IPPROTO_MPLS
 #define IPPROTO_MPLS 137
 #endif
diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 7de65bb..7078397 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -126,7 +126,7 @@
 		return rte_flow_error_set(error, EINVAL,
 					  RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 					  "can't drop and encap in same flow");
-	if (action_flags & (MLX5_FLOW_ACTION_VXLAN_ENCAP |
+	if (action_flags & (MLX5_FLOW_ENCAP_ACTIONS |
 			    MLX5_FLOW_ACTION_VXLAN_DECAP))
 		return rte_flow_error_set(error, EINVAL,
 					  RTE_FLOW_ERROR_TYPE_ACTION, NULL,
@@ -163,7 +163,7 @@
 		return rte_flow_error_set(error, EINVAL,
 					  RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 					  "can't drop and decap in same flow");
-	if (action_flags & (MLX5_FLOW_ACTION_VXLAN_ENCAP |
+	if (action_flags & (MLX5_FLOW_ENCAP_ACTIONS |
 			    MLX5_FLOW_ACTION_VXLAN_DECAP))
 		return rte_flow_error_set(error, EINVAL,
 					  RTE_FLOW_ERROR_TYPE_ACTION, NULL,
@@ -376,6 +376,20 @@
 				vxlan->vx_flags =
 						RTE_BE32(MLX5_VXLAN_GPE_FLAGS);
 			break;
+		case RTE_FLOW_ITEM_TYPE_GRE:
+		case RTE_FLOW_ITEM_TYPE_NVGRE:
+			if (!ipv4 && !ipv6)
+				return rte_flow_error_set(error, EINVAL,
+						RTE_FLOW_ERROR_TYPE_ACTION,
+						(void *)item->type,
+						"ip header not found");
+			if ((ipv4 && !ipv4->next_proto_id) ||
+			    (ipv6 && !ipv6->proto))
+				return rte_flow_error_set(error, EINVAL,
+						RTE_FLOW_ERROR_TYPE_ACTION,
+						(void *)item->type,
+						"next protocol not found");
+			break;
 		case RTE_FLOW_ITEM_TYPE_VOID:
 			break;
 		default:
@@ -416,7 +430,11 @@
 	size_t size = 0;
 	int convert_result = 0;
 
-	encap_data = ((const struct rte_flow_action_vxlan_encap *)
+	if (action->type == RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP)
+		encap_data = ((const struct rte_flow_action_vxlan_encap *)
+						action->conf)->definition;
+	else
+		encap_data = ((const struct rte_flow_action_nvgre_encap *)
 						action->conf)->definition;
 	convert_result = flow_dv_convert_encap_data(encap_data, buf,
 						    &size, error);
@@ -705,12 +723,17 @@
 			++actions_n;
 			break;
 		case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
+		case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
 			ret = flow_dv_validate_action_l2_encap(action_flags,
 							       actions, attr,
 							       error);
 			if (ret < 0)
 				return ret;
-			action_flags |= MLX5_FLOW_ACTION_VXLAN_ENCAP;
+			action_flags |= actions->type ==
+					RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP ?
+					MLX5_FLOW_ACTION_VXLAN_ENCAP :
+					MLX5_FLOW_ACTION_NVGRE_ENCAP;
+
 			++actions_n;
 			break;
 		case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP:
@@ -1492,6 +1515,7 @@
 		flow->actions |= MLX5_FLOW_ACTION_RSS;
 		break;
 	case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
+	case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
 		dev_flow->dv.actions[actions_n].type =
 			MLX5DV_FLOW_ACTION_IBV_FLOW_ACTION;
 		dev_flow->dv.actions[actions_n].action =
@@ -1501,7 +1525,10 @@
 			return -rte_errno;
 		dev_flow->dv.encap_decap_verbs_action =
 			dev_flow->dv.actions[actions_n].action;
-		flow->actions |= MLX5_FLOW_ACTION_VXLAN_ENCAP;
+		flow->actions |= action->type ==
+				 RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP ?
+				 MLX5_FLOW_ACTION_VXLAN_ENCAP :
+				 MLX5_FLOW_ACTION_NVGRE_ENCAP;
 		actions_n++;
 		break;
 	case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP:
-- 
1.8.3.1