[dpdk-dev] [PATCH 4/4] net/mlx5: add DV decap L2 and L3 operations
Dekel Peled
dekelp at mellanox.com
Thu Sep 27 16:50:45 CEST 2018
This patch adds support for Direct Verbs decap operations, L2 and L3.
Signed-off-by: Dekel Peled <dekelp at mellanox.com>
---
drivers/net/mlx5/mlx5_flow_dv.c | 258 ++++++++++++++++++++++++++++++++++++++--
1 file changed, 248 insertions(+), 10 deletions(-)
diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 50925ac..ca44f13 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -126,12 +126,20 @@
NULL,
"can't have 2 encap actions in same"
" flow");
+ if (action_flags & (MLX5_ACTION_TUNNEL_DECAP |
+ MLX5_ACTION_TUNNEL_DECAP_L3))
+ return rte_flow_error_set(error,
+ ENOTSUP,
+ 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,
- NULL,
- "encap action not supported for "
- "ingress");
+ RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
+ NULL,
+ "encap action not supported for "
+ "ingress");
return 0;
}
@@ -178,12 +186,130 @@
NULL,
"can't have 2 encap actions in same"
" flow");
+ if (action_flags & (MLX5_ACTION_TUNNEL_DECAP |
+ MLX5_ACTION_TUNNEL_DECAP_L3))
+ return rte_flow_error_set(error,
+ ENOTSUP,
+ 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,
- NULL,
- "encap action not supported for "
- "ingress");
+ RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
+ NULL,
+ "encap action not supported for "
+ "ingress");
+ return 0;
+}
+
+/**
+ * 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
+mlx5_flow_validate_action_tunnel_decap(uint64_t action_flags,
+ const struct rte_flow_attr *attr,
+ struct rte_flow_error *error)
+{
+ if (action_flags & MLX5_ACTION_DROP)
+ return rte_flow_error_set(error,
+ ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ NULL,
+ "can't drop and decap in same flow");
+ if (action_flags & (MLX5_ACTION_TUNNEL_DECAP |
+ MLX5_ACTION_TUNNEL_DECAP_L3))
+ return rte_flow_error_set(error,
+ ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ NULL,
+ "can't have 2 decap actions in same"
+ " flow");
+ if (action_flags & (MLX5_ACTION_TUNNEL_ENCAP |
+ MLX5_ACTION_TUNNEL_ENCAP_L3))
+ return rte_flow_error_set(error,
+ ENOTSUP,
+ 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
+mlx5_flow_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_ACTION_DROP)
+ return rte_flow_error_set(error,
+ ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ NULL,
+ "can't drop and decap in same flow");
+ if (action_flags & (MLX5_ACTION_TUNNEL_DECAP |
+ MLX5_ACTION_TUNNEL_DECAP_L3))
+ return rte_flow_error_set(error,
+ ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ACTION,
+ NULL,
+ "can't have 2 decap actions in same"
+ " flow");
+ if (action_flags & (MLX5_ACTION_TUNNEL_ENCAP |
+ MLX5_ACTION_TUNNEL_ENCAP_L3))
+ return rte_flow_error_set(error,
+ ENOTSUP,
+ 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;
}
@@ -257,6 +383,72 @@
}
/**
+ * Convert decap action to DV specification.
+ *
+ * @param[in] action
+ * Pointer to action structure.
+ * @param[in] ctx
+ * Verbs context.
+ * @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 *
+mlx5_flow_dv_create_decap(const struct rte_flow_action *action __rte_unused,
+ struct ibv_context *ctx,
+ struct rte_flow_error *error)
+{
+ struct ibv_flow_action *decap_verb = NULL;
+
+ decap_verb = mlx5_glue->dv_create_flow_action_packet_reformat(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] action
+ * Pointer to action structure.
+ * @param[in] ctx
+ * Verbs context.
+ * @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 *
+mlx5_flow_dv_create_decap_l3(const struct rte_flow_action *action,
+ struct ibv_context *ctx,
+ struct rte_flow_error *error)
+{
+ struct ibv_flow_action *decap_l3_verb = NULL;
+ const struct rte_flow_action_tunnel_decap_l3 *decap_l3_data;
+
+ decap_l3_data =
+ (const struct rte_flow_action_tunnel_decap_l3 *)action->conf;
+ decap_l3_verb = mlx5_glue->dv_create_flow_action_packet_reformat(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.
*
@@ -529,6 +721,25 @@
return ret;
action_flags |= MLX5_ACTION_TUNNEL_ENCAP_L3;
break;
+ case RTE_FLOW_ACTION_TYPE_TUNNEL_DECAP:
+ ret = mlx5_flow_validate_action_tunnel_decap
+ (action_flags,
+ attr,
+ error);
+ if (ret < 0)
+ return ret;
+ action_flags |= MLX5_ACTION_TUNNEL_DECAP;
+ break;
+ case RTE_FLOW_ACTION_TYPE_TUNNEL_DECAP_L3:
+ ret = mlx5_flow_validate_action_tunnel_decap_l3
+ (action_flags,
+ actions,
+ attr,
+ error);
+ if (ret < 0)
+ return ret;
+ action_flags |= MLX5_ACTION_TUNNEL_DECAP_L3;
+ break;
default:
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ACTION,
@@ -1320,6 +1531,30 @@
flow->actions |= MLX5_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 =
+ mlx5_flow_dv_create_decap(action, ctx, 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_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 =
+ mlx5_flow_dv_create_decap_l3(action, ctx, 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_ACTION_TUNNEL_DECAP_L3;
+ actions_n++;
+ break;
default:
break;
}
@@ -1679,13 +1914,16 @@
LIST_REMOVE(dev_flow, next);
if (dev_flow->dv.matcher)
flow_dv_matcher_release(dev, dev_flow->dv.matcher);
-
if (dev_flow->dv.encap_verb) {
claim_zero(mlx5_glue->destroy_flow_action
(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);
}
}
--
1.8.3.1
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