On 2024-07-11 21:54, Abdullah Sevincer wrote:
This commit adds support for independent enqueue feature
and updates Event Device and PMD feature list.
A new capability RTE_EVENT_DEV_CAP_INDEPENDENT_ENQ is introduced
to support independent enqueue to support PMD to enqueue in any order
even the underlined hardware device needs enqueues in a strict dequeue
order.
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.sevin...@intel.com>
---
doc/guides/eventdevs/features/default.ini | 1 +
doc/guides/eventdevs/features/dlb2.ini | 1 +
doc/guides/rel_notes/release_24_07.rst | 5 ++++
lib/eventdev/rte_eventdev.h | 36 +++++++++++++++++++++++
4 files changed, 43 insertions(+)
diff --git a/doc/guides/eventdevs/features/default.ini
b/doc/guides/eventdevs/features/default.ini
index 1cc4303fe5..7c4ee99238 100644
--- a/doc/guides/eventdevs/features/default.ini
+++ b/doc/guides/eventdevs/features/default.ini
@@ -22,6 +22,7 @@ carry_flow_id =
maintenance_free =
runtime_queue_attr =
profile_links =
+independent_enq =
;
; Features of a default Ethernet Rx adapter.
diff --git a/doc/guides/eventdevs/features/dlb2.ini
b/doc/guides/eventdevs/features/dlb2.ini
index 7b80286927..c7193b47c1 100644
--- a/doc/guides/eventdevs/features/dlb2.ini
+++ b/doc/guides/eventdevs/features/dlb2.ini
@@ -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]
diff --git a/doc/guides/rel_notes/release_24_07.rst b/doc/guides/rel_notes/release_24_07.rst
index 76a79093d1..d8564b19f0 100644
--- a/doc/guides/rel_notes/release_24_07.rst
+++ b/doc/guides/rel_notes/release_24_07.rst
@@ -162,6 +162,11 @@ New Features
``RTE_EVENT_PORT_CFG_INDEPENDENT_ENQ`` to enable the feature if the
capability
``RTE_EVENT_DEV_CAP_INDEPENDENT_ENQ`` exists.
+* **Updated Event Device Library for independent enqueue feature**
+
+ * Added support for independent enqueue feature. Updated Event Device and
+ PMD feature list.
+
Removed Items
-------------
diff --git a/lib/eventdev/rte_eventdev.h b/lib/eventdev/rte_eventdev.h
index 08e5f9320b..462fc3f18f 100644
--- a/lib/eventdev/rte_eventdev.h
+++ b/lib/eventdev/rte_eventdev.h
@@ -446,6 +446,30 @@ 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 transmit 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.
+ *
+ * To Inform PMD that the application plans to use independent enqueue order
on a port
+ * this code example can be used:
+ *
+ * if (capability & RTE_EVENT_DEV_CAP_INDEPENDENT_ENQ)
+ * port_config = port_config | RTE_EVENT_PORT_CFG_INDEPENDENT_ENQ;
+ *
+ * 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 order
restoration
"The independent enqueue feature only applies to /../" maybe?
+ * only applies to FORWARD and RELEASE events. New events
(op=RTE_EVENT_OP_NEW) will
+ * be transmitted in the order the application enqueues them. New events do not
+ * maintain any order relative to FORWARD/RELEASE events.
Is FORWARD<->NEW relaxed ordering specific to ports which has enabled
RTE_EVENT_PORT_CFG_INDEPENDENT_ENQ?
If not, that information should probably be somewhere else.
Either way,
Reviewed-by: Mattias Rönnblom <mattias.ronnb...@ericsson.com>
+ */
+
/* Event device priority levels */
#define RTE_EVENT_DEV_PRIORITY_HIGHEST 0
/**< Highest priority level for events and queues.
@@ -1072,6 +1096,18 @@ 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 {
