[v5,4/4] net/mlx5: add L2 and L3 decap to Direct Verbs flow

Message ID 1539259967-10975-5-git-send-email-dekelp@mellanox.com
State Superseded
Delegated to: Shahaf Shuler
Headers show
Series
  • add support of Direct Verbs encap and decap actions
Related show

Checks

Context Check Description
ci/Intel-compilation success Compilation OK
ci/checkpatch success coding style OK

Commit Message

Dekel Peled Oct. 11, 2018, 12:12 p.m.
This patch adds support for Direct Verbs decap operations, L2 and L3.

Signed-off-by: Dekel Peled <dekelp@mellanox.com>
Acked-by: Yongseok Koh <yskoh@mellanox.com>
---
 drivers/net/mlx5/mlx5_flow_dv.c | 215 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 215 insertions(+)

Patch

diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 3af5ddc..610818c 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -135,6 +135,12 @@ 
 					  RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 					  "can't have 2 encap actions in same"
 					  " flow");
+	if (action_flags & (MLX5_FLOW_ACTION_TUNNEL_DECAP |
+			    MLX5_FLOW_ACTION_TUNNEL_DECAP_L3))
+		return rte_flow_error_set(error, EINVAL,
+					  RTE_FLOW_ERROR_TYPE_ACTION, NULL,
+					  "can't encap and decap in same"
+					  " flow");
 	if (attr->ingress)
 		return rte_flow_error_set(error, ENOTSUP,
 					  RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
@@ -182,6 +188,12 @@ 
 					  RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 					  "can't have 2 encap actions in same"
 					  " flow");
+	if (action_flags & (MLX5_FLOW_ACTION_TUNNEL_DECAP |
+			    MLX5_FLOW_ACTION_TUNNEL_DECAP_L3))
+		return rte_flow_error_set(error, EINVAL,
+					  RTE_FLOW_ERROR_TYPE_ACTION, NULL,
+					  "can't encap and decap in same"
+					  " flow");
 	if (attr->ingress)
 		return rte_flow_error_set(error, ENOTSUP,
 					  RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
@@ -192,6 +204,100 @@ 
 }
 
 /**
+ * Validate the tunnel decap action
+ *
+ * @param[in] action_flags
+ *   holds the actions detected until now.
+ * @param[in] attr
+ *   Pointer to flow attributes
+ * @param[out] error
+ *   Pointer to error structure.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_ernno is set.
+ */
+static int
+flow_dv_validate_action_tunnel_decap(uint64_t action_flags,
+				     const struct rte_flow_attr *attr,
+				     struct rte_flow_error *error)
+{
+	if (action_flags & MLX5_FLOW_ACTION_DROP)
+		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_TUNNEL_DECAP |
+			    MLX5_FLOW_ACTION_TUNNEL_DECAP_L3))
+		return rte_flow_error_set(error, EINVAL,
+					  RTE_FLOW_ERROR_TYPE_ACTION, NULL,
+					  "can't have 2 decap actions in same"
+					  " flow");
+	if (action_flags & (MLX5_FLOW_ACTION_TUNNEL_ENCAP |
+			    MLX5_FLOW_ACTION_TUNNEL_ENCAP_L3))
+		return rte_flow_error_set(error, EINVAL,
+					  RTE_FLOW_ERROR_TYPE_ACTION, NULL,
+					  "can't encap and decap in same"
+					  " flow");
+	if (attr->egress)
+		return rte_flow_error_set(error, ENOTSUP,
+					  RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
+					  "decap action not supported for "
+					  "egress");
+	return 0;
+}
+
+/**
+ * Validate the tunnel decap L3 action
+ *
+ * @param[in] action_flags
+ *   holds the actions detected until now.
+ * @param[in] action
+ *   Pointer to the decap action.
+ * @param[in] attr
+ *   Pointer to flow attributes
+ * @param[out] error
+ *   Pointer to error structure.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_ernno is set.
+ */
+static int
+flow_dv_validate_action_tunnel_decap_l3(uint64_t action_flags,
+					const struct rte_flow_action *action,
+					const struct rte_flow_attr *attr,
+					struct rte_flow_error *error)
+{
+	const struct rte_flow_action_tunnel_decap_l3 *tunnel_decap_l3 =
+			action->conf;
+
+	if (!tunnel_decap_l3 || !(tunnel_decap_l3->buf))
+		return rte_flow_error_set(error, EINVAL,
+					  RTE_FLOW_ERROR_TYPE_ACTION, action,
+					  "configuration cannot be null");
+	if (action_flags & MLX5_FLOW_ACTION_DROP)
+		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_TUNNEL_DECAP |
+			    MLX5_FLOW_ACTION_TUNNEL_DECAP_L3))
+		return rte_flow_error_set(error, EINVAL,
+					  RTE_FLOW_ERROR_TYPE_ACTION, NULL,
+					  "can't have 2 decap actions in same"
+					  " flow");
+	if (action_flags & (MLX5_FLOW_ACTION_TUNNEL_ENCAP |
+			    MLX5_FLOW_ACTION_TUNNEL_ENCAP_L3))
+		return rte_flow_error_set(error, EINVAL,
+					  RTE_FLOW_ERROR_TYPE_ACTION, NULL,
+					  "can't encap and decap in same"
+					  " flow");
+	if (attr->egress)
+		return rte_flow_error_set(error, ENOTSUP,
+					  RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
+					  "decap action not supported for "
+					  "egress");
+	return 0;
+}
+
+/**
  * Convert encap action to DV specification.
  *
  * @param[in] dev
@@ -261,6 +367,72 @@ 
 }
 
 /**
+ * Convert decap action to DV specification.
+ *
+ * @param[in] dev
+ *   Pointer to rte_eth_dev structure.
+ * @param[in] action
+ *   Pointer to action structure.
+ * @param[out] error
+ *   Pointer to the error structure.
+ *
+ * @return
+ *   Pointer to action on success, NULL otherwise and rte_errno is set.
+ */
+static struct ibv_flow_action *
+flow_dv_create_decap(struct rte_eth_dev *dev,
+		     const struct rte_flow_action *action __rte_unused,
+		     struct rte_flow_error *error)
+{
+	struct ibv_flow_action *decap_verb = NULL;
+	struct priv *priv = dev->data->dev_private;
+
+	decap_verb = mlx5_glue->dv_create_flow_action_packet_reformat
+		(priv->ctx, 0, NULL,
+		 MLX5DV_FLOW_ACTION_PACKET_REFORMAT_TYPE_L2_TUNNEL_TO_L2,
+		 MLX5DV_FLOW_TABLE_TYPE_NIC_RX);
+	if (!decap_verb)
+		rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION,
+				   NULL, "cannot create decap action");
+	return decap_verb;
+}
+
+/**
+ * Convert decap L3 action to DV specification.
+ *
+ * @param[in] dev
+ *   Pointer to rte_eth_dev structure.
+ * @param[in] action
+ *   Pointer to action structure.
+ * @param[out] error
+ *   Pointer to the error structure.
+ *
+ * @return
+ *   Pointer to action on success, NULL otherwise and rte_errno is set.
+ */
+static struct ibv_flow_action *
+flow_dv_create_decap_l3(struct rte_eth_dev *dev,
+			const struct rte_flow_action *action,
+			struct rte_flow_error *error)
+{
+	struct ibv_flow_action *decap_l3_verb = NULL;
+	const struct rte_flow_action_tunnel_decap_l3 *decap_l3_data;
+	struct priv *priv = dev->data->dev_private;
+
+	decap_l3_data =
+		(const struct rte_flow_action_tunnel_decap_l3 *)action->conf;
+	decap_l3_verb = mlx5_glue->dv_create_flow_action_packet_reformat
+		(priv->ctx, decap_l3_data->size,
+		 decap_l3_data->size ? decap_l3_data->buf : NULL,
+		 MLX5DV_FLOW_ACTION_PACKET_REFORMAT_TYPE_L3_TUNNEL_TO_L2,
+		 MLX5DV_FLOW_TABLE_TYPE_NIC_RX);
+	if (!decap_l3_verb)
+		rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION,
+				   NULL, "cannot create decap L3 action");
+	return decap_l3_verb;
+}
+
+/**
  * Verify the @p attributes will be correctly understood by the NIC and store
  * them in the @p flow if everything is correct.
  *
@@ -522,6 +694,20 @@ 
 				return ret;
 			action_flags |= MLX5_FLOW_ACTION_TUNNEL_ENCAP_L3;
 			break;
+		case RTE_FLOW_ACTION_TYPE_TUNNEL_DECAP:
+			ret = flow_dv_validate_action_tunnel_decap
+				(action_flags, attr, error);
+			if (ret < 0)
+				return ret;
+			action_flags |= MLX5_FLOW_ACTION_TUNNEL_DECAP;
+			break;
+		case RTE_FLOW_ACTION_TYPE_TUNNEL_DECAP_L3:
+			ret = flow_dv_validate_action_tunnel_decap_l3
+				(action_flags, actions, attr, error);
+			if (ret < 0)
+				return ret;
+			action_flags |= MLX5_FLOW_ACTION_TUNNEL_DECAP_L3;
+			break;
 		default:
 			return rte_flow_error_set(error, ENOTSUP,
 						  RTE_FLOW_ERROR_TYPE_ACTION,
@@ -1317,6 +1503,30 @@ 
 		flow->actions |= MLX5_FLOW_ACTION_TUNNEL_ENCAP_L3;
 		actions_n++;
 		break;
+	case RTE_FLOW_ACTION_TYPE_TUNNEL_DECAP:
+		dev_flow->dv.actions[actions_n].type =
+			MLX5DV_FLOW_ACTION_IBV_FLOW_ACTION;
+		dev_flow->dv.actions[actions_n].action =
+			flow_dv_create_decap(dev, action, error);
+		if (!(dev_flow->dv.actions[actions_n].action))
+			return -rte_errno;
+		dev_flow->dv.decap_verb =
+			dev_flow->dv.actions[actions_n].action;
+		flow->actions |= MLX5_FLOW_ACTION_TUNNEL_DECAP;
+		actions_n++;
+		break;
+	case RTE_FLOW_ACTION_TYPE_TUNNEL_DECAP_L3:
+		dev_flow->dv.actions[actions_n].type =
+			MLX5DV_FLOW_ACTION_IBV_FLOW_ACTION;
+		dev_flow->dv.actions[actions_n].action =
+			flow_dv_create_decap_l3(dev, action, error);
+		if (!(dev_flow->dv.actions[actions_n].action))
+			return -rte_errno;
+		dev_flow->dv.decap_verb =
+			dev_flow->dv.actions[actions_n].action;
+		flow->actions |= MLX5_FLOW_ACTION_TUNNEL_DECAP_L3;
+		actions_n++;
+		break;
 	default:
 		break;
 	}
@@ -1677,6 +1887,11 @@ 
 						(dev_flow->dv.encap_verb));
 			dev_flow->dv.encap_verb = NULL;
 		}
+		if (dev_flow->dv.decap_verb) {
+			claim_zero(mlx5_glue->destroy_flow_action
+						(dev_flow->dv.decap_verb));
+			dev_flow->dv.decap_verb = NULL;
+		}
 		rte_free(dev_flow);
 	}
 }