[v16,1/3] eventdev: add support for independent enqueue
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Commit Message
Support for independent enqueue feature and updates Event Device
and PMD feature list.
A new capability RTE_EVENT_DEV_CAP_INDEPENDENT_ENQ is introduced. It
allows out-of-order enqueuing of RTE_EVENT_OP_FORWARD or RELEASE type
events on an event port where this capability is enabled.
To use this capability applications need to set flag
RTE_EVENT_PORT_CFG_INDEPENDENT_ENQ during port setup only if the
capability RTE_EVENT_DEV_CAP_INDEPENDENT_ENQ exists.
Signed-off-by: Abdullah Sevincer <abdullah.sevincer@intel.com>
Acked-by: Mattias Rönnblom <mattias.ronnblom@ericsson.com>
---
doc/guides/eventdevs/features/default.ini | 1 +
doc/guides/eventdevs/features/dlb2.ini | 1 +
doc/guides/rel_notes/release_24_11.rst | 6 +++++
lib/eventdev/rte_eventdev.h | 31 +++++++++++++++++++++++
4 files changed, 39 insertions(+)
@@ -22,6 +22,7 @@ carry_flow_id =
maintenance_free =
runtime_queue_attr =
profile_links =
+independent_enq =
;
; Features of a default Ethernet Rx adapter.
@@ -15,6 +15,7 @@ implicit_release_disable = Y
runtime_port_link = Y
multiple_queue_port = Y
maintenance_free = Y
+independent_enq = Y
[Eth Rx adapter Features]
@@ -67,6 +67,12 @@ New Features
The new statistics are useful for debugging and profiling.
+* **Updated Event Device Library for independent enqueue feature**
+
+ * Added support for independent enqueue feature. With this feature Eventdev
+ supports enqueue in any order or specifically in a different order than
+ dequeue. The feature is intended for eventdevs supporting burst mode.
+
Removed Items
-------------
@@ -446,6 +446,25 @@ struct rte_event;
* @see RTE_SCHED_TYPE_PARALLEL
*/
+#define RTE_EVENT_DEV_CAP_INDEPENDENT_ENQ (1ULL << 16)
+/**< Event device is capable of independent enqueue.
+ * A new capability, RTE_EVENT_DEV_CAP_INDEPENDENT_ENQ, will indicate that Eventdev
+ * supports the enqueue in any order or specifically in a different order than the
+ * dequeue. Eventdev PMD can either dequeue events in the changed order in which
+ * they are enqueued or restore the original order before sending them to the
+ * underlying hardware device. A flag is provided during the port configuration to
+ * inform Eventdev PMD that the application intends to use an independent enqueue
+ * order on a particular port. Note that this capability only matters for eventdevs
+ * supporting burst mode.
+ *
+ * When an implicit release is enabled on a port, Eventdev PMD will also handle
+ * the insertion of RELEASE events in place of dropped events. The independent enqueue
+ * feature only applies to FORWARD and RELEASE events. New events (op=RTE_EVENT_OP_NEW)
+ * will be dequeued in the order the application enqueues them and do not maintain
+ * any order relative to FORWARD/RELEASE events. FORWARD vs NEW relaxed ordering
+ * only applies to ports that have enabled independent enqueue feature.
+ */
+
/* Event device priority levels */
#define RTE_EVENT_DEV_PRIORITY_HIGHEST 0
/**< Highest priority level for events and queues.
@@ -1072,6 +1091,18 @@ rte_event_queue_attr_set(uint8_t dev_id, uint8_t queue_id, uint32_t attr_id,
*
* @see rte_event_port_setup()
*/
+#define RTE_EVENT_PORT_CFG_INDEPENDENT_ENQ (1ULL << 5)
+/**< Flag to enable independent enqueue. Must not be set if the device
+ * is not RTE_EVENT_DEV_CAP_INDEPENDENT_ENQ capable. This feature
+ * allows an application to enqueue RTE_EVENT_OP_FORWARD or
+ * RTE_EVENT_OP_RELEASE in an order different than the order the
+ * events were dequeued from the event device, while maintaining
+ * RTE_SCHED_TYPE_ATOMIC or RTE_SCHED_TYPE_ORDERED semantics.
+ *
+ * Note that this flag only matters for Eventdevs supporting burst mode.
+ *
+ * @see rte_event_port_setup()
+ */
/** Event port configuration structure */
struct rte_event_port_conf {