[PATCH v4 03/10] ethdev: bring in async queue-based flow rules operations

[Alexander Kozyrev <akozyrev@nvidia.com>]

A new, faster, queue-based flow rules management mechanism is needed for
applications offloading rules inside the datapath. This asynchronous
and lockless mechanism frees the CPU for further packet processing and
reduces the performance impact of the flow rules creation/destruction
on the datapath. Note that queues are not thread-safe and the queue
should be accessed from the same thread for all queue operations.
It is the responsibility of the app to sync the queue functions in case
of multi-threaded access to the same queue.

The rte_flow_q_flow_create() function enqueues a flow creation to the
requested queue. It benefits from already configured resources and sets
unique values on top of item and action templates. A flow rule is enqueued
on the specified flow queue and offloaded asynchronously to the hardware.
The function returns immediately to spare CPU for further packet
processing. The application must invoke the rte_flow_q_pull() function
to complete the flow rule operation offloading, to clear the queue, and to
receive the operation status. The rte_flow_q_flow_destroy() function
enqueues a flow destruction to the requested queue.

Signed-off-by: Alexander Kozyrev <akozyrev@nvidia.com>
Acked-by: Ori Kam <orika@nvidia.com>
---
 doc/guides/prog_guide/img/rte_flow_q_init.svg | 205 ++++++++++
 .../prog_guide/img/rte_flow_q_usage.svg       | 351 ++++++++++++++++++
 doc/guides/prog_guide/rte_flow.rst            | 167 ++++++++-
 doc/guides/rel_notes/release_22_03.rst        |   8 +
 lib/ethdev/rte_flow.c                         | 174 ++++++++-
 lib/ethdev/rte_flow.h                         | 334 +++++++++++++++++
 lib/ethdev/rte_flow_driver.h                  |  55 +++
 lib/ethdev/version.map                        |   7 +
 8 files changed, 1299 insertions(+), 2 deletions(-)
 create mode 100644 doc/guides/prog_guide/img/rte_flow_q_init.svg
 create mode 100644 doc/guides/prog_guide/img/rte_flow_q_usage.svg

diff --git a/doc/guides/prog_guide/img/rte_flow_q_init.svg b/doc/guides/prog_guide/img/rte_flow_q_init.svg
new file mode 100644
index 0000000000..96160bde42
--- /dev/null
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diff --git a/doc/guides/prog_guide/img/rte_flow_q_usage.svg b/doc/guides/prog_guide/img/rte_flow_q_usage.svg
new file mode 100644
index 0000000000..a1f6c0a0a8
--- /dev/null
+++ b/doc/guides/prog_guide/img/rte_flow_q_usage.svg
@@ -0,0 +1,351 @@
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+       width="46"
+       height="31"
+       stroke="#000000"
+       stroke-width="0.666667"
+       stroke-miterlimit="8"
+       fill="#D9D9D9"
+       id="rect97" />
+    <text
+       font-family="Calibri,Calibri_MSFontService,sans-serif"
+       font-weight="400"
+       font-size="19"
+       transform="translate(841.777 244)"
+       id="text99">yes</text>
+  </g>
+</svg>
diff --git a/doc/guides/prog_guide/rte_flow.rst b/doc/guides/prog_guide/rte_flow.rst
index 5391648833..964c104ed3 100644
--- a/doc/guides/prog_guide/rte_flow.rst
+++ b/doc/guides/prog_guide/rte_flow.rst
@@ -3607,12 +3607,16 @@ Expected number of counters or meters in an application, for example,
 allow PMD to prepare and optimize NIC memory layout in advance.
 ``rte_flow_configure()`` must be called before any flow rule is created,
 but after an Ethernet device is configured.
+It also creates flow queues for asynchronous flow rules operations via
+queue-based API, see `Asynchronous operations`_ section.
 
 .. code-block:: c
 
    int
    rte_flow_configure(uint16_t port_id,
                      const struct rte_flow_port_attr *port_attr,
+                     uint16_t nb_queue,
+                     const struct rte_flow_queue_attr *queue_attr[],
                      struct rte_flow_error *error);
 
 Information about resources that can benefit from pre-allocation can be
@@ -3737,7 +3741,7 @@ and pattern and actions templates are created.
 
 .. code-block:: c
 
-	rte_flow_configure(port, *port_attr, *error);
+	rte_flow_configure(port, *port_attr, nb_queue, *queue_attr, *error);
 
 	struct rte_flow_pattern_template *pattern_templates[0] =
 		rte_flow_pattern_template_create(port, &itr, &pattern, &error);
@@ -3750,6 +3754,167 @@ and pattern and actions templates are created.
 				*actions_templates, nb_actions_templates,
 				*error);
 
+Asynchronous operations
+-----------------------
+
+Flow rules management can be done via special lockless flow management queues.
+- Queue operations are asynchronous and not thread-safe.
+
+- Operations can thus be invoked by the app's datapath,
+packet processing can continue while queue operations are processed by NIC.
+
+- The queue number is configured at initialization stage.
+
+- Available operation types: rule creation, rule destruction,
+indirect rule creation, indirect rule destruction, indirect rule update.
+
+- Operations may be reordered within a queue.
+
+- Operations can be postponed and pushed to NIC in batches.
+
+- Results pulling must be done on time to avoid queue overflows.
+
+- User data is returned as part of the result to identify an operation.
+
+- Flow handle is valid once the creation operation is enqueued and must be
+destroyed even if the operation is not successful and the rule is not inserted.
+
+The asynchronous flow rule insertion logic can be broken into two phases.
+
+1. Initialization stage as shown here:
+
+.. _figure_rte_flow_q_init:
+
+.. figure:: img/rte_flow_q_init.*
+
+2. Main loop as presented on a datapath application example:
+
+.. _figure_rte_flow_q_usage:
+
+.. figure:: img/rte_flow_q_usage.*
+
+Enqueue creation operation
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Enqueueing a flow rule creation operation is similar to simple creation.
+
+.. code-block:: c
+
+	struct rte_flow *
+	rte_flow_q_flow_create(uint16_t port_id,
+				uint32_t queue_id,
+				const struct rte_flow_q_ops_attr *q_ops_attr,
+				struct rte_flow_template_table *template_table,
+				const struct rte_flow_item pattern[],
+				uint8_t pattern_template_index,
+				const struct rte_flow_action actions[],
+				uint8_t actions_template_index,
+				struct rte_flow_error *error);
+
+A valid handle in case of success is returned. It must be destroyed later
+by calling ``rte_flow_q_flow_destroy()`` even if the rule is rejected by HW.
+
+Enqueue destruction operation
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Enqueueing a flow rule destruction operation is similar to simple destruction.
+
+.. code-block:: c
+
+	int
+	rte_flow_q_flow_destroy(uint16_t port_id,
+				uint32_t queue_id,
+				const struct rte_flow_q_ops_attr *q_ops_attr,
+				struct rte_flow *flow,
+				struct rte_flow_error *error);
+
+Push enqueued operations
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+Pushing all internally stored rules from a queue to the NIC.
+
+.. code-block:: c
+
+	int
+	rte_flow_q_push(uint16_t port_id,
+			uint32_t queue_id,
+			struct rte_flow_error *error);
+
+There is the postpone attribute in the queue operation attributes.
+When it is set, multiple operations can be bulked together and not sent to HW
+right away to save SW/HW interactions and prioritize throughput over latency.
+The application must invoke this function to actually push all outstanding
+operations to HW in this case.
+
+Pull enqueued operations
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+Pulling asynchronous operations results.
+
+The application must invoke this function in order to complete asynchronous
+flow rule operations and to receive flow rule operations statuses.
+
+.. code-block:: c
+
+	int
+	rte_flow_q_pull(uint16_t port_id,
+			uint32_t queue_id,
+			struct rte_flow_q_op_res res[],
+			uint16_t n_res,
+			struct rte_flow_error *error);
+
+Multiple outstanding operation results can be pulled simultaneously.
+User data may be provided during a flow creation/destruction in order
+to distinguish between multiple operations. User data is returned as part
+of the result to provide a method to detect which operation is completed.
+
+Enqueue indirect action creation operation
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Asynchronous version of indirect action creation API.
+
+.. code-block:: c
+
+	struct rte_flow_action_handle *
+	rte_flow_q_action_handle_create(uint16_t port_id,
+			uint32_t queue_id,
+			const struct rte_flow_q_ops_attr *q_ops_attr,
+			const struct rte_flow_indir_action_conf *indir_action_conf,
+			const struct rte_flow_action *action,
+			struct rte_flow_error *error);
+
+A valid handle in case of success is returned. It must be destroyed later by
+calling ``rte_flow_q_action_handle_destroy()`` even if the rule is rejected.
+
+Enqueue indirect action destruction operation
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Asynchronous version of indirect action destruction API.
+
+.. code-block:: c
+
+	int
+	rte_flow_q_action_handle_destroy(uint16_t port_id,
+			uint32_t queue_id,
+			const struct rte_flow_q_ops_attr *q_ops_attr,
+			struct rte_flow_action_handle *action_handle,
+			struct rte_flow_error *error);
+
+Enqueue indirect action update operation
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Asynchronous version of indirect action update API.
+
+.. code-block:: c
+
+	int
+	rte_flow_q_action_handle_update(uint16_t port_id,
+			uint32_t queue_id,
+			const struct rte_flow_q_ops_attr *q_ops_attr,
+			struct rte_flow_action_handle *action_handle,
+			const void *update,
+			struct rte_flow_error *error);
+
 .. _flow_isolated_mode:
 
 Flow isolated mode
diff --git a/doc/guides/rel_notes/release_22_03.rst b/doc/guides/rel_notes/release_22_03.rst
index 6656b35295..b4e18836ea 100644
--- a/doc/guides/rel_notes/release_22_03.rst
+++ b/doc/guides/rel_notes/release_22_03.rst
@@ -83,6 +83,14 @@ New Features
     ``rte_flow_template_table_destroy``, ``rte_flow_pattern_template_destroy``
     and ``rte_flow_actions_template_destroy``.
 
+  * ethdev: Added ``rte_flow_q_flow_create`` and ``rte_flow_q_flow_destroy``
+    API to enqueue flow creaion/destruction operations asynchronously as well
+	as ``rte_flow_q_pull`` to poll and retrieve results of these operations
+	and ``rte_flow_q_push`` to push all the in-flight operations to the NIC.
+    Introduced asynchronous API for indirect actions management as well:
+    ``rte_flow_q_action_handle_create``, ``rte_flow_q_action_handle_destroy``
+	and ``rte_flow_q_action_handle_update``.
+
 * **Updated AF_XDP PMD**
 
   * Added support for libxdp >=v1.2.2.
diff --git a/lib/ethdev/rte_flow.c b/lib/ethdev/rte_flow.c
index b53f8c9b89..bf1d3d2062 100644
--- a/lib/ethdev/rte_flow.c
+++ b/lib/ethdev/rte_flow.c
@@ -1415,6 +1415,8 @@ rte_flow_info_get(uint16_t port_id,
 int
 rte_flow_configure(uint16_t port_id,
 		   const struct rte_flow_port_attr *port_attr,
+		   uint16_t nb_queue,
+		   const struct rte_flow_queue_attr *queue_attr[],
 		   struct rte_flow_error *error)
 {
 	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
@@ -1424,7 +1426,7 @@ rte_flow_configure(uint16_t port_id,
 		return -rte_errno;
 	if (likely(!!ops->configure)) {
 		return flow_err(port_id,
-				ops->configure(dev, port_attr, error),
+				ops->configure(dev, port_attr, nb_queue, queue_attr, error),
 				error);
 	}
 	return rte_flow_error_set(error, ENOTSUP,
@@ -1578,3 +1580,173 @@ rte_flow_template_table_destroy(uint16_t port_id,
 				  RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
 				  NULL, rte_strerror(ENOTSUP));
 }
+
+struct rte_flow *
+rte_flow_q_flow_create(uint16_t port_id,
+		       uint32_t queue_id,
+		       const struct rte_flow_q_ops_attr *q_ops_attr,
+		       struct rte_flow_template_table *template_table,
+		       const struct rte_flow_item pattern[],
+		       uint8_t pattern_template_index,
+		       const struct rte_flow_action actions[],
+		       uint8_t actions_template_index,
+		       struct rte_flow_error *error)
+{
+	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
+	const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
+	struct rte_flow *flow;
+
+	if (unlikely(!ops))
+		return NULL;
+	if (likely(!!ops->q_flow_create)) {
+		flow = ops->q_flow_create(dev, queue_id,
+					  q_ops_attr, template_table,
+					  pattern, pattern_template_index,
+					  actions, actions_template_index,
+					  error);
+		if (flow == NULL)
+			flow_err(port_id, -rte_errno, error);
+		return flow;
+	}
+	rte_flow_error_set(error, ENOTSUP,
+			   RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+			   NULL, rte_strerror(ENOTSUP));
+	return NULL;
+}
+
+int
+rte_flow_q_flow_destroy(uint16_t port_id,
+			uint32_t queue_id,
+			const struct rte_flow_q_ops_attr *q_ops_attr,
+			struct rte_flow *flow,
+			struct rte_flow_error *error)
+{
+	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
+	const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
+
+	if (unlikely(!ops))
+		return -rte_errno;
+	if (likely(!!ops->q_flow_destroy)) {
+		return flow_err(port_id,
+				ops->q_flow_destroy(dev, queue_id,
+						    q_ops_attr, flow, error),
+				error);
+	}
+	return rte_flow_error_set(error, ENOTSUP,
+				  RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+				  NULL, rte_strerror(ENOTSUP));
+}
+
+struct rte_flow_action_handle *
+rte_flow_q_action_handle_create(uint16_t port_id,
+		uint32_t queue_id,
+		const struct rte_flow_q_ops_attr *q_ops_attr,
+		const struct rte_flow_indir_action_conf *indir_action_conf,
+		const struct rte_flow_action *action,
+		struct rte_flow_error *error)
+{
+	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
+	const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
+	struct rte_flow_action_handle *handle;
+
+	if (unlikely(!ops))
+		return NULL;
+	if (unlikely(!ops->q_action_handle_create)) {
+		rte_flow_error_set(error, ENOSYS,
+				   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
+				   rte_strerror(ENOSYS));
+		return NULL;
+	}
+	handle = ops->q_action_handle_create(dev, queue_id, q_ops_attr,
+					     indir_action_conf, action, error);
+	if (handle == NULL)
+		flow_err(port_id, -rte_errno, error);
+	return handle;
+}
+
+int
+rte_flow_q_action_handle_destroy(uint16_t port_id,
+		uint32_t queue_id,
+		const struct rte_flow_q_ops_attr *q_ops_attr,
+		struct rte_flow_action_handle *action_handle,
+		struct rte_flow_error *error)
+{
+	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
+	const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
+	int ret;
+
+	if (unlikely(!ops))
+		return -rte_errno;
+	if (unlikely(!ops->q_action_handle_destroy))
+		return rte_flow_error_set(error, ENOSYS,
+					  RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+					  NULL, rte_strerror(ENOSYS));
+	ret = ops->q_action_handle_destroy(dev, queue_id, q_ops_attr,
+					   action_handle, error);
+	return flow_err(port_id, ret, error);
+}
+
+int
+rte_flow_q_action_handle_update(uint16_t port_id,
+		uint32_t queue_id,
+		const struct rte_flow_q_ops_attr *q_ops_attr,
+		struct rte_flow_action_handle *action_handle,
+		const void *update,
+		struct rte_flow_error *error)
+{
+	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
+	const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
+	int ret;
+
+	if (unlikely(!ops))
+		return -rte_errno;
+	if (unlikely(!ops->q_action_handle_update))
+		return rte_flow_error_set(error, ENOSYS,
+					  RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+					  NULL, rte_strerror(ENOSYS));
+	ret = ops->q_action_handle_update(dev, queue_id, q_ops_attr,
+					  action_handle, update, error);
+	return flow_err(port_id, ret, error);
+}
+
+int
+rte_flow_q_push(uint16_t port_id,
+		uint32_t queue_id,
+		struct rte_flow_error *error)
+{
+	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
+	const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
+
+	if (unlikely(!ops))
+		return -rte_errno;
+	if (likely(!!ops->q_push)) {
+		return flow_err(port_id,
+				ops->q_push(dev, queue_id, error),
+				error);
+	}
+	return rte_flow_error_set(error, ENOTSUP,
+				  RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+				  NULL, rte_strerror(ENOTSUP));
+}
+
+int
+rte_flow_q_pull(uint16_t port_id,
+		uint32_t queue_id,
+		struct rte_flow_q_op_res res[],
+		uint16_t n_res,
+		struct rte_flow_error *error)
+{
+	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
+	const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
+	int ret;
+
+	if (unlikely(!ops))
+		return -rte_errno;
+	if (likely(!!ops->q_pull)) {
+		ret = ops->q_pull(dev, queue_id, res, n_res, error);
+		return ret ? ret : flow_err(port_id, ret, error);
+	}
+	return rte_flow_error_set(error, ENOTSUP,
+				  RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
+				  NULL, rte_strerror(ENOTSUP));
+}
diff --git a/lib/ethdev/rte_flow.h b/lib/ethdev/rte_flow.h
index e87db5a540..b0d4f33bfd 100644
--- a/lib/ethdev/rte_flow.h
+++ b/lib/ethdev/rte_flow.h
@@ -4862,6 +4862,10 @@ rte_flow_flex_item_release(uint16_t port_id,
  *
  */
 struct rte_flow_port_info {
+	/**
+	 * Number of queues for asynchronous operations.
+	 */
+	uint32_t nb_queues;
 	/**
 	 * Number of pre-configurable counter actions.
 	 * @see RTE_FLOW_ACTION_TYPE_COUNT
@@ -4879,6 +4883,17 @@ struct rte_flow_port_info {
 	uint32_t nb_meters;
 };
 
+/**
+ * Flow engine queue configuration.
+ */
+__extension__
+struct rte_flow_queue_attr {
+	/**
+	 * Number of flow rule operations a queue can hold.
+	 */
+	uint32_t size;
+};
+
 /**
  * @warning
  * @b EXPERIMENTAL: this API may change without prior notice.
@@ -4948,6 +4963,11 @@ struct rte_flow_port_attr {
  *   Port identifier of Ethernet device.
  * @param[in] port_attr
  *   Port configuration attributes.
+ * @param[in] nb_queue
+ *   Number of flow queues to be configured.
+ * @param[in] queue_attr
+ *   Array that holds attributes for each flow queue.
+ *   Number of elements is set in @p port_attr.nb_queues.
  * @param[out] error
  *   Perform verbose error reporting if not NULL.
  *   PMDs initialize this structure in case of error only.
@@ -4959,6 +4979,8 @@ __rte_experimental
 int
 rte_flow_configure(uint16_t port_id,
 		   const struct rte_flow_port_attr *port_attr,
+		   uint16_t nb_queue,
+		   const struct rte_flow_queue_attr *queue_attr[],
 		   struct rte_flow_error *error);
 
 /**
@@ -5221,6 +5243,318 @@ rte_flow_template_table_destroy(uint16_t port_id,
 		struct rte_flow_template_table *template_table,
 		struct rte_flow_error *error);
 
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Queue operation attributes.
+ */
+struct rte_flow_q_ops_attr {
+	/**
+	 * The user data that will be returned on the completion events.
+	 */
+	void *user_data;
+	 /**
+	  * When set, the requested action will not be sent to the HW immediately.
+	  * The application must call the rte_flow_queue_push to actually send it.
+	  */
+	uint32_t postpone:1;
+};
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Enqueue rule creation operation.
+ *
+ * @param port_id
+ *   Port identifier of Ethernet device.
+ * @param queue_id
+ *   Flow queue used to insert the rule.
+ * @param[in] q_ops_attr
+ *   Rule creation operation attributes.
+ * @param[in] template_table
+ *   Template table to select templates from.
+ * @param[in] pattern
+ *   List of pattern items to be used.
+ *   The list order should match the order in the pattern template.
+ *   The spec is the only relevant member of the item that is being used.
+ * @param[in] pattern_template_index
+ *   Pattern template index in the table.
+ * @param[in] actions
+ *   List of actions to be used.
+ *   The list order should match the order in the actions template.
+ * @param[in] actions_template_index
+ *   Actions template index in the table.
+ * @param[out] error
+ *   Perform verbose error reporting if not NULL.
+ *   PMDs initialize this structure in case of error only.
+ *
+ * @return
+ *   Handle on success, NULL otherwise and rte_errno is set.
+ *   The rule handle doesn't mean that the rule was offloaded.
+ *   Only completion result indicates that the rule was offloaded.
+ */
+__rte_experimental
+struct rte_flow *
+rte_flow_q_flow_create(uint16_t port_id,
+		       uint32_t queue_id,
+		       const struct rte_flow_q_ops_attr *q_ops_attr,
+		       struct rte_flow_template_table *template_table,
+		       const struct rte_flow_item pattern[],
+		       uint8_t pattern_template_index,
+		       const struct rte_flow_action actions[],
+		       uint8_t actions_template_index,
+		       struct rte_flow_error *error);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Enqueue rule destruction operation.
+ *
+ * This function enqueues a destruction operation on the queue.
+ * Application should assume that after calling this function
+ * the rule handle is not valid anymore.
+ * Completion indicates the full removal of the rule from the HW.
+ *
+ * @param port_id
+ *   Port identifier of Ethernet device.
+ * @param queue_id
+ *   Flow queue which is used to destroy the rule.
+ *   This must match the queue on which the rule was created.
+ * @param[in] q_ops_attr
+ *   Rule destroy operation attributes.
+ * @param[in] flow
+ *   Flow handle to be destroyed.
+ * @param[out] error
+ *   Perform verbose error reporting if not NULL.
+ *   PMDs initialize this structure in case of error only.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+__rte_experimental
+int
+rte_flow_q_flow_destroy(uint16_t port_id,
+			uint32_t queue_id,
+			const struct rte_flow_q_ops_attr *q_ops_attr,
+			struct rte_flow *flow,
+			struct rte_flow_error *error);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Enqueue indirect action creation operation.
+ * @see rte_flow_action_handle_create
+ *
+ * @param[in] port_id
+ *   Port identifier of Ethernet device.
+ * @param[in] queue_id
+ *   Flow queue which is used to create the rule.
+ * @param[in] q_ops_attr
+ *   Queue operation attributes.
+ * @param[in] indir_action_conf
+ *   Action configuration for the indirect action object creation.
+ * @param[in] action
+ *   Specific configuration of the indirect action object.
+ * @param[out] error
+ *   Perform verbose error reporting if not NULL.
+ *   PMDs initialize this structure in case of error only.
+ *
+ * @return
+ *   - (0) if success.
+ *   - (-ENODEV) if *port_id* invalid.
+ *   - (-ENOSYS) if underlying device does not support this functionality.
+ *   - (-EIO) if underlying device is removed.
+ *   - (-ENOENT) if action pointed by *action* handle was not found.
+ *   - (-EBUSY) if action pointed by *action* handle still used by some rules
+ *   rte_errno is also set.
+ */
+__rte_experimental
+struct rte_flow_action_handle *
+rte_flow_q_action_handle_create(uint16_t port_id,
+		uint32_t queue_id,
+		const struct rte_flow_q_ops_attr *q_ops_attr,
+		const struct rte_flow_indir_action_conf *indir_action_conf,
+		const struct rte_flow_action *action,
+		struct rte_flow_error *error);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Enqueue indirect action destruction operation.
+ * The destroy queue must be the same
+ * as the queue on which the action was created.
+ *
+ * @param[in] port_id
+ *   Port identifier of Ethernet device.
+ * @param[in] queue_id
+ *   Flow queue which is used to destroy the rule.
+ * @param[in] q_ops_attr
+ *   Queue operation attributes.
+ * @param[in] action_handle
+ *   Handle for the indirect action object to be destroyed.
+ * @param[out] error
+ *   Perform verbose error reporting if not NULL.
+ *   PMDs initialize this structure in case of error only.
+ *
+ * @return
+ *   - (0) if success.
+ *   - (-ENODEV) if *port_id* invalid.
+ *   - (-ENOSYS) if underlying device does not support this functionality.
+ *   - (-EIO) if underlying device is removed.
+ *   - (-ENOENT) if action pointed by *action* handle was not found.
+ *   - (-EBUSY) if action pointed by *action* handle still used by some rules
+ *   rte_errno is also set.
+ */
+__rte_experimental
+int
+rte_flow_q_action_handle_destroy(uint16_t port_id,
+		uint32_t queue_id,
+		const struct rte_flow_q_ops_attr *q_ops_attr,
+		struct rte_flow_action_handle *action_handle,
+		struct rte_flow_error *error);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Enqueue indirect action update operation.
+ * @see rte_flow_action_handle_create
+ *
+ * @param[in] port_id
+ *   Port identifier of Ethernet device.
+ * @param[in] queue_id
+ *   Flow queue which is used to update the rule.
+ * @param[in] q_ops_attr
+ *   Queue operation attributes.
+ * @param[in] action_handle
+ *   Handle for the indirect action object to be updated.
+ * @param[in] update
+ *   Update profile specification used to modify the action pointed by handle.
+ *   *update* could be with the same type of the immediate action corresponding
+ *   to the *handle* argument when creating, or a wrapper structure includes
+ *   action configuration to be updated and bit fields to indicate the member
+ *   of fields inside the action to update.
+ * @param[out] error
+ *   Perform verbose error reporting if not NULL.
+ *   PMDs initialize this structure in case of error only.
+ *
+ * @return
+ *   - (0) if success.
+ *   - (-ENODEV) if *port_id* invalid.
+ *   - (-ENOSYS) if underlying device does not support this functionality.
+ *   - (-EIO) if underlying device is removed.
+ *   - (-ENOENT) if action pointed by *action* handle was not found.
+ *   - (-EBUSY) if action pointed by *action* handle still used by some rules
+ *   rte_errno is also set.
+ */
+__rte_experimental
+int
+rte_flow_q_action_handle_update(uint16_t port_id,
+		uint32_t queue_id,
+		const struct rte_flow_q_ops_attr *q_ops_attr,
+		struct rte_flow_action_handle *action_handle,
+		const void *update,
+		struct rte_flow_error *error);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Push all internally stored rules to the HW.
+ * Postponed rules are rules that were inserted with the postpone flag set.
+ * Can be used to notify the HW about batch of rules prepared by the SW to
+ * reduce the number of communications between the HW and SW.
+ *
+ * @param port_id
+ *   Port identifier of Ethernet device.
+ * @param queue_id
+ *   Flow queue to be pushed.
+ * @param[out] error
+ *   Perform verbose error reporting if not NULL.
+ *   PMDs initialize this structure in case of error only.
+ *
+ * @return
+ *    0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+__rte_experimental
+int
+rte_flow_q_push(uint16_t port_id,
+		uint32_t queue_id,
+		struct rte_flow_error *error);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Queue operation status.
+ */
+enum rte_flow_q_op_status {
+	/**
+	 * The operation was completed successfully.
+	 */
+	RTE_FLOW_Q_OP_SUCCESS,
+	/**
+	 * The operation was not completed successfully.
+	 */
+	RTE_FLOW_Q_OP_ERROR,
+};
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Queue operation results.
+ */
+__extension__
+struct rte_flow_q_op_res {
+	/**
+	 * Returns the status of the operation that this completion signals.
+	 */
+	enum rte_flow_q_op_status status;
+	/**
+	 * The user data that will be returned on the completion events.
+	 */
+	void *user_data;
+};
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Pull a rte flow operation.
+ * The application must invoke this function in order to complete
+ * the flow rule offloading and to retrieve the flow rule operation status.
+ *
+ * @param port_id
+ *   Port identifier of Ethernet device.
+ * @param queue_id
+ *   Flow queue which is used to pull the operation.
+ * @param[out] res
+ *   Array of results that will be set.
+ * @param[in] n_res
+ *   Maximum number of results that can be returned.
+ *   This value is equal to the size of the res array.
+ * @param[out] error
+ *   Perform verbose error reporting if not NULL.
+ *   PMDs initialize this structure in case of error only.
+ *
+ * @return
+ *   Number of results that were pulled,
+ *   a negative errno value otherwise and rte_errno is set.
+ */
+__rte_experimental
+int
+rte_flow_q_pull(uint16_t port_id,
+		uint32_t queue_id,
+		struct rte_flow_q_op_res res[],
+		uint16_t n_res,
+		struct rte_flow_error *error);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/lib/ethdev/rte_flow_driver.h b/lib/ethdev/rte_flow_driver.h
index 2d96db1dc7..33dc57a15e 100644
--- a/lib/ethdev/rte_flow_driver.h
+++ b/lib/ethdev/rte_flow_driver.h
@@ -161,6 +161,8 @@ struct rte_flow_ops {
 	int (*configure)
 		(struct rte_eth_dev *dev,
 		 const struct rte_flow_port_attr *port_attr,
+		 uint16_t nb_queue,
+		 const struct rte_flow_queue_attr *queue_attr[],
 		 struct rte_flow_error *err);
 	/** See rte_flow_pattern_template_create() */
 	struct rte_flow_pattern_template *(*pattern_template_create)
@@ -199,6 +201,59 @@ struct rte_flow_ops {
 		(struct rte_eth_dev *dev,
 		 struct rte_flow_template_table *template_table,
 		 struct rte_flow_error *err);
+	/** See rte_flow_q_flow_create() */
+	struct rte_flow *(*q_flow_create)
+		(struct rte_eth_dev *dev,
+		 uint32_t queue_id,
+		 const struct rte_flow_q_ops_attr *q_ops_attr,
+		 struct rte_flow_template_table *template_table,
+		 const struct rte_flow_item pattern[],
+		 uint8_t pattern_template_index,
+		 const struct rte_flow_action actions[],
+		 uint8_t actions_template_index,
+		 struct rte_flow_error *err);
+	/** See rte_flow_q_flow_destroy() */
+	int (*q_flow_destroy)
+		(struct rte_eth_dev *dev,
+		 uint32_t queue_id,
+		 const struct rte_flow_q_ops_attr *q_ops_attr,
+		 struct rte_flow *flow,
+		 struct rte_flow_error *err);
+	/** See rte_flow_q_action_handle_create() */
+	struct rte_flow_action_handle *(*q_action_handle_create)
+		(struct rte_eth_dev *dev,
+		 uint32_t queue_id,
+		 const struct rte_flow_q_ops_attr *q_ops_attr,
+		 const struct rte_flow_indir_action_conf *indir_action_conf,
+		 const struct rte_flow_action *action,
+		 struct rte_flow_error *err);
+	/** See rte_flow_q_action_handle_destroy() */
+	int (*q_action_handle_destroy)
+		(struct rte_eth_dev *dev,
+		 uint32_t queue_id,
+		 const struct rte_flow_q_ops_attr *q_ops_attr,
+		 struct rte_flow_action_handle *action_handle,
+		 struct rte_flow_error *error);
+	/** See rte_flow_q_action_handle_update() */
+	int (*q_action_handle_update)
+		(struct rte_eth_dev *dev,
+		 uint32_t queue_id,
+		 const struct rte_flow_q_ops_attr *q_ops_attr,
+		 struct rte_flow_action_handle *action_handle,
+		 const void *update,
+		 struct rte_flow_error *error);
+	/** See rte_flow_q_push() */
+	int (*q_push)
+		(struct rte_eth_dev *dev,
+		 uint32_t queue_id,
+		 struct rte_flow_error *err);
+	/** See rte_flow_q_pull() */
+	int (*q_pull)
+		(struct rte_eth_dev *dev,
+		 uint32_t queue_id,
+		 struct rte_flow_q_op_res res[],
+		 uint16_t n_res,
+		 struct rte_flow_error *error);
 };
 
 /**
diff --git a/lib/ethdev/version.map b/lib/ethdev/version.map
index 5fd2108895..46a4151053 100644
--- a/lib/ethdev/version.map
+++ b/lib/ethdev/version.map
@@ -268,6 +268,13 @@ EXPERIMENTAL {
 	rte_flow_actions_template_destroy;
 	rte_flow_template_table_create;
 	rte_flow_template_table_destroy;
+	rte_flow_q_flow_create;
+	rte_flow_q_flow_destroy;
+	rte_flow_q_action_handle_create;
+	rte_flow_q_action_handle_destroy;
+	rte_flow_q_action_handle_update;
+	rte_flow_q_push;
+	rte_flow_q_pull;
 };
 
 INTERNAL {
-- 
2.18.2