diff mbox series

[RFC] eventdev: introduce crypto adapter enqueue API

Message ID 20210318181254.418679-1-gakhil@marvell.com (mailing list archive)
State Superseded
Delegated to: Jerin Jacob
Headers show
Series [RFC] eventdev: introduce crypto adapter enqueue API | expand


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

Commit Message

Akhil Goyal March 18, 2021, 6:12 p.m. UTC
In case an event from a previous stage is required to be forwarded
to a crypto adapter and PMD supports internal event port in crypto
adapter, exposed via capability
a way to check in the API rte_event_enqueue_burst(), whether it is
for crypto adapter or for eth tx adapter.

Hence we need a new API similar to
rte_event_eth_tx_adapter_enqueue_burst(), which can send to a
crypto adapter.

Note that RTE_EVENT_TYPE_* cannot be used to make that decision,
as it is meant for event source and not event destination.
And event port designated for crypto adapter is designed to be used
for OP_NEW mode.

Hence, in order to support an event PMD which has an internal
event port in crypto adapter (RTE_EVENT_CRYPTO_ADAPTER_OP_FORWARD mode),
application should use rte_event_crypto_adapter_enqueue_burst() API
to enqueue events.

When internal port is not available(RTE_EVENT_CRYPTO_ADAPTER_OP_NEW mode),
application can use API rte_event_enqueue_burst() as it was doing earlier,
i.e. retrieve event port used by crypto adapter and bind its event queues
to that port and enqueue events using the API rte_event_enqueue_burst().

- test application changes for the usage of new API
- support in octeontx2 event PMD

Signed-off-by: Shijith Thotton <sthotton@marvell.com>
Signed-off-by: Akhil Goyal <gakhil@marvell.com>
 .../prog_guide/event_crypto_adapter.rst       | 69 ++++++++++++-------
 lib/librte_eventdev/eventdev_trace_points.c   |  3 +
 .../rte_event_crypto_adapter.h                | 66 ++++++++++++++++++
 lib/librte_eventdev/rte_eventdev.c            | 10 +++
 lib/librte_eventdev/rte_eventdev.h            |  8 ++-
 lib/librte_eventdev/rte_eventdev_trace_fp.h   | 10 +++
 lib/librte_eventdev/version.map               |  3 +
 7 files changed, 142 insertions(+), 27 deletions(-)
diff mbox series


diff --git a/doc/guides/prog_guide/event_crypto_adapter.rst b/doc/guides/prog_guide/event_crypto_adapter.rst
index 1e3eb7139..4650ed945 100644
--- a/doc/guides/prog_guide/event_crypto_adapter.rst
+++ b/doc/guides/prog_guide/event_crypto_adapter.rst
@@ -55,21 +55,22 @@  which is needed to enqueue an event after the crypto operation is completed.
-can directly submit the crypto operations to the cryptodev.
-If not, application retrieves crypto adapter's event port using
-rte_event_crypto_adapter_event_port_get() API. Then, links its event
-queue to this port and starts enqueuing crypto operations as events
-to the eventdev. The adapter then dequeues the events and submits the
-crypto operations to the cryptodev. After the crypto completions, the
-adapter enqueues events to the event device.
-Application can use this mode, when ingress packet ordering is needed.
-In this mode, events dequeued from the adapter will be treated as
-forwarded events. The application needs to specify the cryptodev ID
-and queue pair ID (request information) needed to enqueue a crypto
-operation in addition to the event information (response information)
-needed to enqueue an event after the crypto operation has completed.
+In the ``RTE_EVENT_CRYPTO_ADAPTER_OP_FORWARD`` mode, if the event PMD and crypto
+PMD supports internal event port
+use ``rte_event_crypto_adapter_enqueue_burst()`` API to enqueue crypto
+operations as events to crypto adapter. If not, application retrieves crypto
+adapter's event port using ``rte_event_crypto_adapter_event_port_get()`` API,
+links its event queue to this port and starts enqueuing crypto operations as
+events to eventdev using ``rte_event_enqueue_burst()``. The adapter then
+dequeues the events and submits the crypto operations to the cryptodev. After
+the crypto operation is complete, the adapter enqueues events to the event
+device. The application can use this mode when ingress packet ordering is
+needed. In this mode, events dequeued from the adapter will be treated as
+forwarded events. The application needs to specify the cryptodev ID and queue
+pair ID (request information) needed to enqueue a crypto operation in addition
+to the event information (response information) needed to enqueue an event after
+the crypto operation has completed.
 .. _figure_event_crypto_adapter_op_forward:
@@ -120,28 +121,44 @@  service function and needs to create an event port for it. The callback is
 expected to fill the ``struct rte_event_crypto_adapter_conf`` structure
 passed to it.
-For RTE_EVENT_CRYPTO_ADAPTER_OP_FORWARD mode, the event port created by adapter
-can be retrieved using ``rte_event_crypto_adapter_event_port_get()`` API.
-Application can use this event port to link with event queue on which it
-enqueues events towards the crypto adapter.
+In the ``RTE_EVENT_CRYPTO_ADAPTER_OP_FORWARD`` mode, if the event PMD and crypto
+PMD supports internal event port
+operations should be enqueued to the crypto adapter using
+``rte_event_crypto_adapter_enqueue_burst()`` API. If not, the event port created
+by the adapter can be retrieved using
+``rte_event_crypto_adapter_event_port_get()`` API. An application can use this
+event port to link with an event queue, on which it enqueues events towards the
+crypto adapter using ``rte_event_enqueue_burst()``.
 .. code-block:: c
-        uint8_t id, evdev, crypto_ev_port_id, app_qid;
+        uint8_t id, evdev_id, cdev_id, crypto_ev_port_id, app_qid;
         struct rte_event ev;
+        uint32_t cap;
         int ret;
-        ret = rte_event_crypto_adapter_event_port_get(id, &crypto_ev_port_id);
-        ret = rte_event_queue_setup(evdev, app_qid, NULL);
-        ret = rte_event_port_link(evdev, crypto_ev_port_id, &app_qid, NULL, 1);
         // Fill in event info and update event_ptr with rte_crypto_op
         memset(&ev, 0, sizeof(ev));
-        ev.queue_id = app_qid;
         ev.event_ptr = op;
-        ret = rte_event_enqueue_burst(evdev, app_ev_port_id, ev, nb_events);
+        ret = rte_event_crypto_adapter_caps_get(evdev_id, cdev_id, &cap);
+                ret = rte_event_crypto_adapter_enqueue_burst(evdev_id,
+                                                app_ev_port_id, ev, nb_events);
+        } else {
+                ret = rte_event_crypto_adapter_event_port_get(id,
+                                                        &crypto_ev_port_id);
+                ret = rte_event_queue_setup(evdev_id, app_qid, NULL);
+                ret = rte_event_port_link(evdev_id, crypto_ev_port_id, &app_qid,
+                                          NULL, 1);
+                ev.queue_id = app_qid;
+                ret = rte_event_enqueue_burst(evdev_id, app_ev_port_id, ev,
+                                              nb_events);
+        }
 Querying adapter capabilities
diff --git a/lib/librte_eventdev/eventdev_trace_points.c b/lib/librte_eventdev/eventdev_trace_points.c
index 1a0ccc448..3867ec800 100644
--- a/lib/librte_eventdev/eventdev_trace_points.c
+++ b/lib/librte_eventdev/eventdev_trace_points.c
@@ -118,3 +118,6 @@  RTE_TRACE_POINT_REGISTER(rte_eventdev_trace_crypto_adapter_start,
+	lib.eventdev.crypto.enq)
diff --git a/lib/librte_eventdev/rte_event_crypto_adapter.h b/lib/librte_eventdev/rte_event_crypto_adapter.h
index 60630ef66..003667759 100644
--- a/lib/librte_eventdev/rte_event_crypto_adapter.h
+++ b/lib/librte_eventdev/rte_event_crypto_adapter.h
@@ -522,6 +522,72 @@  rte_event_crypto_adapter_service_id_get(uint8_t id, uint32_t *service_id);
 rte_event_crypto_adapter_event_port_get(uint8_t id, uint8_t *event_port_id);
+ * Enqueue a burst of crypto operations as events object supplied in *rte_event*
+ * structure on an event crypto adapter designated by its event *dev_id* through
+ * the event port specified by *port_id*. This function is supported if the
+ * capability flag set.
+ *
+ * The *nb_events* parameter is the number of event objects to enqueue which are
+ * supplied in the *ev* array of *rte_event* structure.
+ *
+ * The rte_event_crypto_adapter_enqueue() function returns the number of
+ * events objects it actually enqueued. A return value equal to *nb_events*
+ * means that all event objects have been enqueued.
+ *
+ * @param dev_id
+ *  The identifier of the device.
+ * @param port_id
+ *  The identifier of the event port.
+ * @param ev
+ *  Points to an array of *nb_events* objects of type *rte_event* structure
+ *  which contain the event object enqueue operations to be processed.
+ * @param nb_events
+ *  The number of event objects to enqueue, typically number of
+ *  rte_event_port_attr_get(...RTE_EVENT_PORT_ATTR_ENQ_DEPTH...)
+ *  available for this port.
+ *
+ * @return
+ *   The number of event objects actually enqueued on the event device. The
+ *   return value can be less than the value of the *nb_events* parameter when
+ *   the event devices queue is full or if invalid parameters are specified in a
+ *   *rte_event*. If the return value is less than *nb_events*, the remaining
+ *   events at the end of ev[] are not consumed and the caller has to take care
+ *   of them, and rte_errno is set accordingly. Possible errno values include:
+ *   - EINVAL   The port ID is invalid, device ID is invalid, an event's queue
+ *              ID is invalid, or an event's sched type doesn't match the
+ *              capabilities of the destination queue.
+ *   - ENOSPC   The event port was backpressured and unable to enqueue
+ *              one or more events. This error code is only applicable to
+ *              closed systems.
+ */
+static inline uint16_t
+rte_event_crypto_adapter_enqueue(uint8_t dev_id,
+				uint8_t port_id,
+				struct rte_event ev[],
+				uint16_t nb_events)
+	const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
+	if (dev_id >= RTE_EVENT_MAX_DEVS ||
+		!rte_eventdevs[dev_id].attached) {
+		rte_errno = EINVAL;
+		return 0;
+	}
+	if (port_id >= dev->data->nb_ports) {
+		rte_errno = EINVAL;
+		return 0;
+	}
+	rte_eventdev_trace_crypto_adapter_enqueue(dev_id, port_id, ev,
+		nb_events);
+	return dev->ca_enqueue(dev->data->ports[port_id], ev, nb_events);
 #ifdef __cplusplus
diff --git a/lib/librte_eventdev/rte_eventdev.c b/lib/librte_eventdev/rte_eventdev.c
index b57363f80..5674bd38e 100644
--- a/lib/librte_eventdev/rte_eventdev.c
+++ b/lib/librte_eventdev/rte_eventdev.c
@@ -1405,6 +1405,15 @@  rte_event_tx_adapter_enqueue(__rte_unused void *port,
 	return 0;
+static uint16_t
+rte_event_crypto_adapter_enqueue(__rte_unused void *port,
+			__rte_unused struct rte_event ev[],
+			__rte_unused uint16_t nb_events)
+	rte_errno = ENOTSUP;
+	return 0;
 struct rte_eventdev *
 rte_event_pmd_allocate(const char *name, int socket_id)
@@ -1427,6 +1436,7 @@  rte_event_pmd_allocate(const char *name, int socket_id)
 	eventdev->txa_enqueue = rte_event_tx_adapter_enqueue;
 	eventdev->txa_enqueue_same_dest = rte_event_tx_adapter_enqueue;
+	eventdev->ca_enqueue = rte_event_crypto_adapter_enqueue;
 	if (eventdev->data == NULL) {
 		struct rte_eventdev_data *eventdev_data = NULL;
diff --git a/lib/librte_eventdev/rte_eventdev.h b/lib/librte_eventdev/rte_eventdev.h
index ce1fc2ce0..70e2fa140 100644
--- a/lib/librte_eventdev/rte_eventdev.h
+++ b/lib/librte_eventdev/rte_eventdev.h
@@ -1273,6 +1273,10 @@  typedef uint16_t (*event_tx_adapter_enqueue_same_dest)(void *port,
  * burst having same destination Ethernet port & Tx queue.
+typedef uint16_t (*event_crypto_adapter_enqueue)(void *port,
+				struct rte_event ev[], uint16_t nb_events);
+/**< @internal Enqueue burst of events on crypto adapter */
 /**< @internal Max length of name of event PMD */
@@ -1344,6 +1348,8 @@  struct rte_eventdev {
 	event_tx_adapter_enqueue txa_enqueue;
 	/**< Pointer to PMD eth Tx adapter enqueue function. */
+	event_crypto_adapter_enqueue ca_enqueue;
+	/**< Pointer to PMD crypto adapter enqueue function. */
 	struct rte_eventdev_data *data;
 	/**< Pointer to device data */
 	struct rte_eventdev_ops *dev_ops;
@@ -1356,7 +1362,7 @@  struct rte_eventdev {
 	/**< Flag indicating the device is attached */
 	uint64_t reserved_64s[4]; /**< Reserved for future fields */
-	void *reserved_ptrs[4];   /**< Reserved for future fields */
+	void *reserved_ptrs[3];   /**< Reserved for future fields */
 } __rte_cache_aligned;
 extern struct rte_eventdev *rte_eventdevs;
diff --git a/lib/librte_eventdev/rte_eventdev_trace_fp.h b/lib/librte_eventdev/rte_eventdev_trace_fp.h
index 349129c0f..5639e0b83 100644
--- a/lib/librte_eventdev/rte_eventdev_trace_fp.h
+++ b/lib/librte_eventdev/rte_eventdev_trace_fp.h
@@ -49,6 +49,16 @@  RTE_TRACE_POINT_FP(
+	rte_eventdev_trace_crypto_adapter_enqueue,
+	RTE_TRACE_POINT_ARGS(uint8_t dev_id, uint8_t port_id, void *ev_table,
+		uint16_t nb_events),
+	rte_trace_point_emit_u8(dev_id);
+	rte_trace_point_emit_u8(port_id);
+	rte_trace_point_emit_ptr(ev_table);
+	rte_trace_point_emit_u16(nb_events);
 	RTE_TRACE_POINT_ARGS(const void *adapter, void **evtims_table,
diff --git a/lib/librte_eventdev/version.map b/lib/librte_eventdev/version.map
index 3e5c09cfd..c63ba7a9c 100644
--- a/lib/librte_eventdev/version.map
+++ b/lib/librte_eventdev/version.map
@@ -138,6 +138,9 @@  EXPERIMENTAL {
 	# added in 20.11
+	# added in 21.05
+	__rte_eventdev_trace_crypto_adapter_enqueue;