* operation. Instead, Event drivers export Poll-Mode enqueue and dequeue
* functions to applications.
*
- * An event driven based application has following typical workflow on fastpath:
- * \code{.c}
- * while (1) {
- *
- * rte_event_schedule(dev_id);
- *
- * rte_event_dequeue(...);
- *
- * (event processing)
- *
- * rte_event_enqueue(...);
- * }
- * \endcode
- *
* The events are injected to event device through *enqueue* operation by
* event producers in the system. The typical event producers are ethdev
* subsystem for generating packet events, CPU(SW) for generating events based
* indicates the device is centralized and thus needs a dedicated scheduling
* thread that repeatedly calls rte_event_schedule().
*
+ * An event driven worker thread has following typical workflow on fastpath:
+ * \code{.c}
+ * while (1) {
+ * rte_event_dequeue_burst(...);
+ * (event processing)
+ * rte_event_enqueue_burst(...);
+ * }
+ * \endcode
+ *
*/
#ifdef __cplusplus
#endif
#include <rte_common.h>
-#include <rte_pci.h>
-#include <rte_mbuf.h>
+#include <rte_memory.h>
+#include <rte_errno.h>
+
+struct rte_mbuf; /* we just use mbuf pointers; no need to include rte_mbuf.h */
/* Event device capability bitmap flags */
#define RTE_EVENT_DEV_CAP_QUEUE_QOS (1ULL << 0)
*
* @see rte_event_schedule(), rte_event_dequeue_burst()
*/
+#define RTE_EVENT_DEV_CAP_QUEUE_ALL_TYPES (1ULL << 3)
+/**< Event device is capable of enqueuing events of any type to any queue.
+ * If this capability is not set, the queue only supports events of the
+ * *RTE_EVENT_QUEUE_CFG_* type that it was created with.
+ *
+ * @see RTE_EVENT_QUEUE_CFG_* values
+ */
+#define RTE_EVENT_DEV_CAP_BURST_MODE (1ULL << 4)
+/**< Event device is capable of operating in burst mode for enqueue(forward,
+ * release) and dequeue operation. If this capability is not set, application
+ * still uses the rte_event_dequeue_burst() and rte_event_enqueue_burst() but
+ * PMD accepts only one event at a time.
+ *
+ * @see rte_event_dequeue_burst() rte_event_enqueue_burst()
+ */
/* Event device priority levels */
#define RTE_EVENT_DEV_PRIORITY_HIGHEST 0
*/
struct rte_event_dev_info {
const char *driver_name; /**< Event driver name */
- struct rte_pci_device *pci_dev; /**< PCI information */
+ struct rte_device *dev; /**< Device information */
uint32_t min_dequeue_timeout_ns;
/**< Minimum supported global dequeue timeout(ns) by this device */
uint32_t max_dequeue_timeout_ns;
* This value should be in the range of *min_dequeue_timeout_ns* and
* *max_dequeue_timeout_ns* which previously provided in
* rte_event_dev_info_get()
+ * The value 0 is allowed, in which case, default dequeue timeout used.
* @see RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT
*/
int32_t nb_events_limit;
- /**< Applies to *closed system* event dev only. This field indicates a
- * limit to ethdev-like devices to limit the number of events injected
- * into the system to not overwhelm core-to-core events.
- * This value cannot exceed the *max_num_events* which previously
- * provided in rte_event_dev_info_get()
+ /**< In a *closed system* this field is the limit on maximum number of
+ * events that can be inflight in the eventdev at a given time. The
+ * limit is required to ensure that the finite space in a closed system
+ * is not overwhelmed. The value cannot exceed the *max_num_events*
+ * as provided by rte_event_dev_info_get().
+ * This value should be set to -1 for *open system*.
*/
uint8_t nb_event_queues;
/**< Number of event queues to configure on this device.
* This value cannot exceed the *max_event_queue_flows* which previously
* provided in rte_event_dev_info_get()
*/
- uint8_t nb_event_port_dequeue_depth;
+ uint32_t nb_event_port_dequeue_depth;
/**< Maximum number of events can be dequeued at a time from an
* event port by this device.
* This value cannot exceed the *max_event_port_dequeue_depth*
- * which previously provided in rte_event_dev_info_get()
+ * which previously provided in rte_event_dev_info_get().
+ * Ignored when device is not RTE_EVENT_DEV_CAP_BURST_MODE capable.
* @see rte_event_port_setup()
*/
uint32_t nb_event_port_enqueue_depth;
/**< Maximum number of events can be enqueued at a time from an
* event port by this device.
* This value cannot exceed the *max_event_port_enqueue_depth*
- * which previously provided in rte_event_dev_info_get()
+ * which previously provided in rte_event_dev_info_get().
+ * Ignored when device is not RTE_EVENT_DEV_CAP_BURST_MODE capable.
* @see rte_event_port_setup()
*/
uint32_t event_dev_cfg;
/* Event queue specific APIs */
/* Event queue configuration bitmap flags */
-#define RTE_EVENT_QUEUE_CFG_DEFAULT (0)
-/**< Default value of *event_queue_cfg* when rte_event_queue_setup() invoked
- * with queue_conf == NULL
- *
- * @see rte_event_queue_setup()
- */
#define RTE_EVENT_QUEUE_CFG_TYPE_MASK (3ULL << 0)
/**< Mask for event queue schedule type configuration request */
#define RTE_EVENT_QUEUE_CFG_ALL_TYPES (0ULL << 0)
struct rte_event_queue_conf {
uint32_t nb_atomic_flows;
/**< The maximum number of active flows this queue can track at any
- * given time. The value must be in the range of
- * [1 - nb_event_queue_flows)] which previously provided in
- * rte_event_dev_info_get().
+ * given time. If the queue is configured for atomic scheduling (by
+ * applying the RTE_EVENT_QUEUE_CFG_ALL_TYPES or
+ * RTE_EVENT_QUEUE_CFG_ATOMIC_ONLY flags to event_queue_cfg), then the
+ * value must be in the range of [1, nb_event_queue_flows], which was
+ * previously provided in rte_event_dev_configure().
*/
uint32_t nb_atomic_order_sequences;
/**< The maximum number of outstanding events waiting to be
* scheduler cannot schedule the events from this queue and invalid
* event will be returned from dequeue until one or more entries are
* freed up/released.
- * The value must be in the range of [1 - nb_event_queue_flows)]
- * which previously supplied to rte_event_dev_configure().
+ * If the queue is configured for ordered scheduling (by applying the
+ * RTE_EVENT_QUEUE_CFG_ALL_TYPES or RTE_EVENT_QUEUE_CFG_ORDERED_ONLY
+ * flags to event_queue_cfg), then the value must be in the range of
+ * [1, nb_event_queue_flows], which was previously supplied to
+ * rte_event_dev_configure().
*/
uint32_t event_queue_cfg; /**< Queue cfg flags(EVENT_QUEUE_CFG_) */
uint8_t priority;
* can have a lower threshold so as not to overwhelm the device,
* while ports used for worker pools can have a higher threshold.
* This value cannot exceed the *nb_events_limit*
- * which previously supplied to rte_event_dev_configure()
+ * which was previously supplied to rte_event_dev_configure().
+ * This should be set to '-1' for *open system*.
*/
- uint8_t dequeue_depth;
+ uint16_t dequeue_depth;
/**< Configure number of bulk dequeues for this event port.
* This value cannot exceed the *nb_event_port_dequeue_depth*
- * which previously supplied to rte_event_dev_configure()
+ * which previously supplied to rte_event_dev_configure().
+ * Ignored when device is not RTE_EVENT_DEV_CAP_BURST_MODE capable.
*/
- uint8_t enqueue_depth;
+ uint16_t enqueue_depth;
/**< Configure number of bulk enqueues for this event port.
* This value cannot exceed the *nb_event_port_enqueue_depth*
- * which previously supplied to rte_event_dev_configure()
+ * which previously supplied to rte_event_dev_configure().
+ * Ignored when device is not RTE_EVENT_DEV_CAP_BURST_MODE capable.
*/
};
* Event device identifier
* @return
* - 0: Success, device started.
- * - <0: Error code of the driver device start function.
+ * - -ESTALE : Not all ports of the device are configured
+ * - -ENOLINK: Not all queues are linked, which could lead to deadlock.
*/
int
rte_event_dev_start(uint8_t dev_id);
* The generic *rte_event* structure to hold the event attributes
* for dequeue and enqueue operation
*/
+RTE_STD_C11
struct rte_event {
/** WORD0 */
- RTE_STD_C11
union {
uint64_t event;
/** Event attributes for dequeue or enqueue operation */
};
};
/** WORD1 */
- RTE_STD_C11
union {
uint64_t u64;
/**< Opaque 64-bit value */
};
};
+
+struct rte_eventdev_driver;
+struct rte_eventdev_ops;
+struct rte_eventdev;
+
+typedef void (*event_schedule_t)(struct rte_eventdev *dev);
+/**< @internal Schedule one or more events in the event dev. */
+
+typedef uint16_t (*event_enqueue_t)(void *port, const struct rte_event *ev);
+/**< @internal Enqueue event on port of a device */
+
+typedef uint16_t (*event_enqueue_burst_t)(void *port,
+ const struct rte_event ev[], uint16_t nb_events);
+/**< @internal Enqueue burst of events on port of a device */
+
+typedef uint16_t (*event_dequeue_t)(void *port, struct rte_event *ev,
+ uint64_t timeout_ticks);
+/**< @internal Dequeue event from port of a device */
+
+typedef uint16_t (*event_dequeue_burst_t)(void *port, struct rte_event ev[],
+ uint16_t nb_events, uint64_t timeout_ticks);
+/**< @internal Dequeue burst of events from port of a device */
+
+#define RTE_EVENTDEV_NAME_MAX_LEN (64)
+/**< @internal Max length of name of event PMD */
+
+/**
+ * @internal
+ * The data part, with no function pointers, associated with each device.
+ *
+ * This structure is safe to place in shared memory to be common among
+ * different processes in a multi-process configuration.
+ */
+struct rte_eventdev_data {
+ int socket_id;
+ /**< Socket ID where memory is allocated */
+ uint8_t dev_id;
+ /**< Device ID for this instance */
+ uint8_t nb_queues;
+ /**< Number of event queues. */
+ uint8_t nb_ports;
+ /**< Number of event ports. */
+ void **ports;
+ /**< Array of pointers to ports. */
+ uint8_t *ports_dequeue_depth;
+ /**< Array of port dequeue depth. */
+ uint8_t *ports_enqueue_depth;
+ /**< Array of port enqueue depth. */
+ uint8_t *queues_prio;
+ /**< Array of queue priority. */
+ uint16_t *links_map;
+ /**< Memory to store queues to port connections. */
+ void *dev_private;
+ /**< PMD-specific private data */
+ uint32_t event_dev_cap;
+ /**< Event device capabilities(RTE_EVENT_DEV_CAP_)*/
+ struct rte_event_dev_config dev_conf;
+ /**< Configuration applied to device. */
+
+ RTE_STD_C11
+ uint8_t dev_started : 1;
+ /**< Device state: STARTED(1)/STOPPED(0) */
+
+ char name[RTE_EVENTDEV_NAME_MAX_LEN];
+ /**< Unique identifier name */
+} __rte_cache_aligned;
+
+/** @internal The data structure associated with each event device. */
+struct rte_eventdev {
+ event_schedule_t schedule;
+ /**< Pointer to PMD schedule function. */
+ event_enqueue_t enqueue;
+ /**< Pointer to PMD enqueue function. */
+ event_enqueue_burst_t enqueue_burst;
+ /**< Pointer to PMD enqueue burst function. */
+ event_enqueue_burst_t enqueue_new_burst;
+ /**< Pointer to PMD enqueue burst function(op new variant) */
+ event_enqueue_burst_t enqueue_forward_burst;
+ /**< Pointer to PMD enqueue burst function(op forward variant) */
+ event_dequeue_t dequeue;
+ /**< Pointer to PMD dequeue function. */
+ event_dequeue_burst_t dequeue_burst;
+ /**< Pointer to PMD dequeue burst function. */
+
+ struct rte_eventdev_data *data;
+ /**< Pointer to device data */
+ const struct rte_eventdev_ops *dev_ops;
+ /**< Functions exported by PMD */
+ struct rte_device *dev;
+ /**< Device info. supplied by probing */
+
+ RTE_STD_C11
+ uint8_t attached : 1;
+ /**< Flag indicating the device is attached */
+} __rte_cache_aligned;
+
+extern struct rte_eventdev *rte_eventdevs;
+/** @internal The pool of rte_eventdev structures. */
+
+
/**
* Schedule one or more events in the event dev.
*
* @param dev_id
* The identifier of the device.
*/
-void
-rte_event_schedule(uint8_t dev_id);
+static inline void
+rte_event_schedule(uint8_t dev_id)
+{
+ struct rte_eventdev *dev = &rte_eventdevs[dev_id];
+ if (*dev->schedule)
+ (*dev->schedule)(dev);
+}
+
+static __rte_always_inline uint16_t
+__rte_event_enqueue_burst(uint8_t dev_id, uint8_t port_id,
+ const struct rte_event ev[], uint16_t nb_events,
+ const event_enqueue_burst_t fn)
+{
+ const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
+
+#ifdef RTE_LIBRTE_EVENTDEV_DEBUG
+ 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;
+ }
+#endif
+ /*
+ * Allow zero cost non burst mode routine invocation if application
+ * requests nb_events as const one
+ */
+ if (nb_events == 1)
+ return (*dev->enqueue)(dev->data->ports[port_id], ev);
+ else
+ return fn(dev->data->ports[port_id], ev, nb_events);
+}
/**
* Enqueue a burst of events objects or an event object supplied in *rte_event*
* 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 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
- *
+ * *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.
* @see rte_event_port_enqueue_depth()
*/
-uint16_t
+static inline uint16_t
rte_event_enqueue_burst(uint8_t dev_id, uint8_t port_id,
- const struct rte_event ev[], uint16_t nb_events);
+ const struct rte_event ev[], uint16_t nb_events)
+{
+ const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
+
+ return __rte_event_enqueue_burst(dev_id, port_id, ev, nb_events,
+ dev->enqueue_burst);
+}
+
+/**
+ * Enqueue a burst of events objects of operation type *RTE_EVENT_OP_NEW* on
+ * an event device designated by its *dev_id* through the event port specified
+ * by *port_id*.
+ *
+ * Provides the same functionality as rte_event_enqueue_burst(), expect that
+ * application can use this API when the all objects in the burst contains
+ * the enqueue operation of the type *RTE_EVENT_OP_NEW*. This specialized
+ * function can provide the additional hint to the PMD and optimize if possible.
+ *
+ * The rte_event_enqueue_new_burst() result is undefined if the enqueue burst
+ * has event object of operation type != RTE_EVENT_OP_NEW.
+ *
+ * @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_enqueue_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.
+ * @see rte_event_port_enqueue_depth() rte_event_enqueue_burst()
+ */
+static inline uint16_t
+rte_event_enqueue_new_burst(uint8_t dev_id, uint8_t port_id,
+ const struct rte_event ev[], uint16_t nb_events)
+{
+ const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
+
+ return __rte_event_enqueue_burst(dev_id, port_id, ev, nb_events,
+ dev->enqueue_new_burst);
+}
+
+/**
+ * Enqueue a burst of events objects of operation type *RTE_EVENT_OP_FORWARD*
+ * on an event device designated by its *dev_id* through the event port
+ * specified by *port_id*.
+ *
+ * Provides the same functionality as rte_event_enqueue_burst(), expect that
+ * application can use this API when the all objects in the burst contains
+ * the enqueue operation of the type *RTE_EVENT_OP_FORWARD*. This specialized
+ * function can provide the additional hint to the PMD and optimize if possible.
+ *
+ * The rte_event_enqueue_new_burst() result is undefined if the enqueue burst
+ * has event object of operation type != RTE_EVENT_OP_FORWARD.
+ *
+ * @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_enqueue_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.
+ * @see rte_event_port_enqueue_depth() rte_event_enqueue_burst()
+ */
+static inline uint16_t
+rte_event_enqueue_forward_burst(uint8_t dev_id, uint8_t port_id,
+ const struct rte_event ev[], uint16_t nb_events)
+{
+ const struct rte_eventdev *dev = &rte_eventdevs[dev_id];
+
+ return __rte_event_enqueue_burst(dev_id, port_id, ev, nb_events,
+ dev->enqueue_forward_burst);
+}
/**
* Converts nanoseconds to *timeout_ticks* value for rte_event_dequeue_burst()
*
* @return
* - 0 on success.
- * - <0 on failure.
+ * - -ENOTSUP if the device doesn't support timeouts
+ * - -EINVAL if *dev_id* is invalid or *timeout_ticks* is NULL
+ * - other values < 0 on failure.
*
* @see rte_event_dequeue_burst(), RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT
* @see rte_event_dev_configure()
* - 0 no-wait, returns immediately if there is no event.
* - >0 wait for the event, if the device is configured with
* RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT then this function will wait until
- * the event available or *timeout_ticks* time.
+ * at least one event is available or *timeout_ticks* time.
* if the device is not configured with RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT
* then this function will wait until the event available or
* *dequeue_timeout_ns* ns which was previously supplied to
*
* @see rte_event_port_dequeue_depth()
*/
-uint16_t
+static inline uint16_t
rte_event_dequeue_burst(uint8_t dev_id, uint8_t port_id, struct rte_event ev[],
- uint16_t nb_events, uint64_t timeout_ticks);
+ uint16_t nb_events, uint64_t timeout_ticks)
+{
+ struct rte_eventdev *dev = &rte_eventdevs[dev_id];
+
+#ifdef RTE_LIBRTE_EVENTDEV_DEBUG
+ 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;
+ }
+#endif
+
+ /*
+ * Allow zero cost non burst mode routine invocation if application
+ * requests nb_events as const one
+ */
+ if (nb_events == 1)
+ return (*dev->dequeue)(
+ dev->data->ports[port_id], ev, timeout_ticks);
+ else
+ return (*dev->dequeue_burst)(
+ dev->data->ports[port_id], ev, nb_events,
+ timeout_ticks);
+}
/**
* Link multiple source event queues supplied in *queues* to the destination
* with RTE_EVENT_DEV_PRIORITY_NORMAL servicing priority
*
* @param nb_links
- * The number of links to establish
+ * The number of links to establish. This parameter is ignored if queues is
+ * NULL.
*
* @return
* The number of links actually established. The return value can be less than
* event queue(s) from the event port *port_id*.
*
* @param nb_unlinks
- * The number of unlinks to establish
+ * The number of unlinks to establish. This parameter is ignored if queues is
+ * NULL.
*
* @return
* The number of unlinks actually established. The return value can be less
int
rte_event_dev_dump(uint8_t dev_id, FILE *f);
+/** Maximum name length for extended statistics counters */
+#define RTE_EVENT_DEV_XSTATS_NAME_SIZE 64
+
+/**
+ * Selects the component of the eventdev to retrieve statistics from.
+ */
+enum rte_event_dev_xstats_mode {
+ RTE_EVENT_DEV_XSTATS_DEVICE,
+ RTE_EVENT_DEV_XSTATS_PORT,
+ RTE_EVENT_DEV_XSTATS_QUEUE,
+};
+
+/**
+ * A name-key lookup element for extended statistics.
+ *
+ * This structure is used to map between names and ID numbers
+ * for extended ethdev statistics.
+ */
+struct rte_event_dev_xstats_name {
+ char name[RTE_EVENT_DEV_XSTATS_NAME_SIZE];
+};
+
+/**
+ * Retrieve names of extended statistics of an event device.
+ *
+ * @param dev_id
+ * The identifier of the event device.
+ * @param mode
+ * The mode of statistics to retrieve. Choices include the device statistics,
+ * port statistics or queue statistics.
+ * @param queue_port_id
+ * Used to specify the port or queue number in queue or port mode, and is
+ * ignored in device mode.
+ * @param[out] xstats_names
+ * Block of memory to insert names into. Must be at least size in capacity.
+ * If set to NULL, function returns required capacity.
+ * @param[out] ids
+ * Block of memory to insert ids into. Must be at least size in capacity.
+ * If set to NULL, function returns required capacity. The id values returned
+ * can be passed to *rte_event_dev_xstats_get* to select statistics.
+ * @param size
+ * Capacity of xstats_names (number of names).
+ * @return
+ * - positive value lower or equal to size: success. The return value
+ * is the number of entries filled in the stats table.
+ * - positive value higher than size: error, the given statistics table
+ * is too small. The return value corresponds to the size that should
+ * be given to succeed. The entries in the table are not valid and
+ * shall not be used by the caller.
+ * - negative value on error:
+ * -ENODEV for invalid *dev_id*
+ * -EINVAL for invalid mode, queue port or id parameters
+ * -ENOTSUP if the device doesn't support this function.
+ */
+int
+rte_event_dev_xstats_names_get(uint8_t dev_id,
+ enum rte_event_dev_xstats_mode mode,
+ uint8_t queue_port_id,
+ struct rte_event_dev_xstats_name *xstats_names,
+ unsigned int *ids,
+ unsigned int size);
+
+/**
+ * Retrieve extended statistics of an event device.
+ *
+ * @param dev_id
+ * The identifier of the device.
+ * @param mode
+ * The mode of statistics to retrieve. Choices include the device statistics,
+ * port statistics or queue statistics.
+ * @param queue_port_id
+ * Used to specify the port or queue number in queue or port mode, and is
+ * ignored in device mode.
+ * @param ids
+ * The id numbers of the stats to get. The ids can be got from the stat
+ * position in the stat list from rte_event_dev_get_xstats_names(), or
+ * by using rte_eventdev_get_xstats_by_name()
+ * @param[out] values
+ * The values for each stats request by ID.
+ * @param n
+ * The number of stats requested
+ * @return
+ * - positive value: number of stat entries filled into the values array
+ * - negative value on error:
+ * -ENODEV for invalid *dev_id*
+ * -EINVAL for invalid mode, queue port or id parameters
+ * -ENOTSUP if the device doesn't support this function.
+ */
+int
+rte_event_dev_xstats_get(uint8_t dev_id,
+ enum rte_event_dev_xstats_mode mode,
+ uint8_t queue_port_id,
+ const unsigned int ids[],
+ uint64_t values[], unsigned int n);
+
+/**
+ * Retrieve the value of a single stat by requesting it by name.
+ *
+ * @param dev_id
+ * The identifier of the device
+ * @param name
+ * The stat name to retrieve
+ * @param[out] id
+ * If non-NULL, the numerical id of the stat will be returned, so that further
+ * requests for the stat can be got using rte_eventdev_xstats_get, which will
+ * be faster as it doesn't need to scan a list of names for the stat.
+ * If the stat cannot be found, the id returned will be (unsigned)-1.
+ * @return
+ * - positive value or zero: the stat value
+ * - negative value: -EINVAL if stat not found, -ENOTSUP if not supported.
+ */
+uint64_t
+rte_event_dev_xstats_by_name_get(uint8_t dev_id, const char *name,
+ unsigned int *id);
+
+/**
+ * Reset the values of the xstats of the selected component in the device.
+ *
+ * @param dev_id
+ * The identifier of the device
+ * @param mode
+ * The mode of the statistics to reset. Choose from device, queue or port.
+ * @param queue_port_id
+ * The queue or port to reset. 0 and positive values select ports and queues,
+ * while -1 indicates all ports or queues.
+ * @param ids
+ * Selects specific statistics to be reset. When NULL, all statistics selected
+ * by *mode* will be reset. If non-NULL, must point to array of at least
+ * *nb_ids* size.
+ * @param nb_ids
+ * The number of ids available from the *ids* array. Ignored when ids is NULL.
+ * @return
+ * - zero: successfully reset the statistics to zero
+ * - negative value: -EINVAL invalid parameters, -ENOTSUP if not supported.
+ */
+int
+rte_event_dev_xstats_reset(uint8_t dev_id,
+ enum rte_event_dev_xstats_mode mode,
+ int16_t queue_port_id,
+ const uint32_t ids[],
+ uint32_t nb_ids);
+
#ifdef __cplusplus
}
#endif
git.droids-corp.org / dpdk.git / blobdiff