* the content of this field is implementation dependent.
*/
+#define RTE_EVENT_DEV_CAP_MAINTENANCE_FREE (1ULL << 10)
+/**< Event device *does not* require calls to rte_event_maintain().
+ * An event device that does not set this flag requires calls to
+ * rte_event_maintain() during periods when neither
+ * rte_event_dequeue_burst() nor rte_event_enqueue_burst() are called
+ * on a port. This will allow the event device to perform internal
+ * processing, such as flushing buffered events, return credits to a
+ * global pool, or process signaling related to load balancing.
+ */
+
/* Event device priority levels */
#define RTE_EVENT_DEV_PRIORITY_HIGHEST 0
/**< Highest priority expressed across eventdev subsystem
*
* @see rte_event_port_setup(), rte_event_port_link()
*/
+#define RTE_EVENT_PORT_CFG_HINT_PRODUCER (1ULL << 2)
+/**< Hint that this event port will primarily enqueue events to the system.
+ * A PMD can optimize its internal workings by assuming that this port is
+ * primarily going to enqueue NEW events.
+ *
+ * Note that this flag is only a hint, so PMDs must operate under the
+ * assumption that any port can enqueue an event with any type of op.
+ *
+ * @see rte_event_port_setup()
+ */
+#define RTE_EVENT_PORT_CFG_HINT_CONSUMER (1ULL << 3)
+/**< Hint that this event port will primarily dequeue events from the system.
+ * A PMD can optimize its internal workings by assuming that this port is
+ * primarily going to consume events, and not enqueue FORWARD or RELEASE
+ * events.
+ *
+ * Note that this flag is only a hint, so PMDs must operate under the
+ * assumption that any port can enqueue an event with any type of op.
+ *
+ * @see rte_event_port_setup()
+ */
+#define RTE_EVENT_PORT_CFG_HINT_WORKER (1ULL << 4)
+/**< Hint that this event port will primarily pass existing events through.
+ * A PMD can optimize its internal workings by assuming that this port is
+ * primarily going to FORWARD events, and not enqueue NEW or RELEASE events
+ * often.
+ *
+ * Note that this flag is only a hint, so PMDs must operate under the
+ * assumption that any port can enqueue an event with any type of op.
+ *
+ * @see rte_event_port_setup()
+ */
/** Event port configuration structure */
struct rte_event_port_conf {
* - ENOMEM - no appropriate memory area found in which to create memzone
* - ENAMETOOLONG - mempool name requested is too long.
*/
-__rte_experimental
struct rte_mempool *
rte_event_vector_pool_create(const char *name, unsigned int n,
unsigned int cache_size, uint16_t nb_elem,
return 0;
}
#endif
- rte_eventdev_trace_enq_burst(dev_id, port_id, ev, nb_events, fn);
+ rte_eventdev_trace_enq_burst(dev_id, port_id, ev, nb_events, (void *)fn);
/*
* Allow zero cost non burst mode routine invocation if application
* requests nb_events as const one
timeout_ticks);
}
+#define RTE_EVENT_DEV_MAINT_OP_FLUSH (1 << 0)
+/**< Force an immediately flush of any buffered events in the port,
+ * potentially at the cost of additional overhead.
+ *
+ * @see rte_event_maintain()
+ */
+
+/**
+ * Maintain an event device.
+ *
+ * This function is only relevant for event devices which do not have
+ * the @ref RTE_EVENT_DEV_CAP_MAINTENANCE_FREE flag set. Such devices
+ * require an application thread using a particular port to
+ * periodically call rte_event_maintain() on that port during periods
+ * which it is neither attempting to enqueue events to nor dequeue
+ * events from the port. rte_event_maintain() is a low-overhead
+ * function and should be called at a high rate (e.g., in the
+ * application's poll loop).
+ *
+ * No port may be left unmaintained.
+ *
+ * At the application thread's convenience, rte_event_maintain() may
+ * (but is not required to) be called even during periods when enqueue
+ * or dequeue functions are being called, at the cost of a slight
+ * increase in overhead.
+ *
+ * rte_event_maintain() may be called on event devices which have set
+ * @ref RTE_EVENT_DEV_CAP_MAINTENANCE_FREE, in which case it is a
+ * no-operation.
+ *
+ * @param dev_id
+ * The identifier of the device.
+ * @param port_id
+ * The identifier of the event port.
+ * @param op
+ * 0, or @ref RTE_EVENT_DEV_MAINT_OP_FLUSH.
+ * @return
+ * - 0 on success.
+ * - -EINVAL if *dev_id*, *port_id*, or *op* is invalid.
+ *
+ * @see RTE_EVENT_DEV_CAP_MAINTENANCE_FREE
+ */
+__rte_experimental
+static inline int
+rte_event_maintain(uint8_t dev_id, uint8_t port_id, int op)
+{
+ const struct rte_event_fp_ops *fp_ops;
+ void *port;
+
+ fp_ops = &rte_event_fp_ops[dev_id];
+ port = fp_ops->data[port_id];
+#ifdef RTE_LIBRTE_EVENTDEV_DEBUG
+ if (dev_id >= RTE_EVENT_MAX_DEVS ||
+ port_id >= RTE_EVENT_MAX_PORTS_PER_DEV)
+ return -EINVAL;
+
+ if (port == NULL)
+ return -EINVAL;
+
+ if (op & (~RTE_EVENT_DEV_MAINT_OP_FLUSH))
+ return -EINVAL;
+#endif
+ rte_eventdev_trace_maintain(dev_id, port_id, op);
+
+ if (fp_ops->maintain != NULL)
+ fp_ops->maintain(port, op);
+
+ return 0;
+}
+
#ifdef __cplusplus
}
#endif
git.droids-corp.org / dpdk.git / blobdiff