rte_event_dev_info(3)

NAME
rte_event_dev_info

SYNOPSIS

#include <rte_eventdev.h>

  Data Fields

const char * driver_name
struct rte_device * dev
uint32_t min_dequeue_timeout_ns
uint32_t max_dequeue_timeout_ns
uint32_t dequeue_timeout_ns
uint8_t max_event_queues
uint32_t max_event_queue_flows
uint8_t max_event_queue_priority_levels
uint8_t max_event_priority_levels
uint8_t max_event_ports
uint8_t max_event_port_dequeue_depth
uint32_t max_event_port_enqueue_depth
uint8_t max_event_port_links
int32_t max_num_events
uint32_t event_dev_cap
uint8_t max_single_link_event_port_queue_pairs
uint8_t max_profiles_per_port

Detailed Description

Event device information

Definition at line 600 of file rte_eventdev.h.

Field Documentation

  const char* driver_name
Event driver name.

Definition at line 601 of file rte_eventdev.h.

  struct rte_device* dev
Device information.

Definition at line 602 of file rte_eventdev.h.

  uint32_t min_dequeue_timeout_ns
Minimum global dequeue timeout(ns) supported by this device.

Definition at line 603 of file rte_eventdev.h.

  uint32_t max_dequeue_timeout_ns
Maximum global dequeue timeout(ns) supported by this device.

Definition at line 605 of file rte_eventdev.h.

  uint32_t dequeue_timeout_ns
Configured global dequeue timeout(ns) for this device.

Definition at line 607 of file rte_eventdev.h.

  uint8_t max_event_queues
Maximum event queues supported by this device.

This count excludes any queues covered by max_single_link_event_port_queue_pairs.

Definition at line 609 of file rte_eventdev.h.

  uint32_t max_event_queue_flows
Maximum number of flows within an event queue supported by this device.

Definition at line 614 of file rte_eventdev.h.

  uint8_t max_event_queue_priority_levels
Maximum number of event queue priority levels supported by this device.

Valid when the device has RTE_EVENT_DEV_CAP_QUEUE_QOS capability.

The implementation shall normalize priority values specified between RTE_EVENT_DEV_PRIORITY_HIGHEST and RTE_EVENT_DEV_PRIORITY_LOWEST to map them internally to this range of priorities. [For devices supporting a power-of-2 number of priority levels, this normalization will be done via a right-shift operation, so only the top log2(max_levels) bits will be used by the event device.]

See also
    rte_event_queue_conf.priority

Definition at line 616 of file rte_eventdev.h.

  uint8_t max_event_priority_levels
Maximum number of event priority levels by this device.

Valid when the device has RTE_EVENT_DEV_CAP_EVENT_QOS capability.

The implementation shall normalize priority values specified between RTE_EVENT_DEV_PRIORITY_HIGHEST and RTE_EVENT_DEV_PRIORITY_LOWEST to map them internally to this range of priorities. [For devices supporting a power-of-2 number of priority levels, this normalization will be done via a right-shift operation, so only the top log2(max_levels) bits will be used by the event device.]

See also
    rte_event.priority

Definition at line 630 of file rte_eventdev.h.

  uint8_t max_event_ports
Maximum number of event ports supported by this device.

This count excludes any ports covered by max_single_link_event_port_queue_pairs.

Definition at line 644 of file rte_eventdev.h.

  uint8_t max_event_port_dequeue_depth
Maximum number of events that can be dequeued at a time from an event port on this device.

A device that does not support burst dequeue (RTE_EVENT_DEV_CAP_BURST_MODE) will set this to 1.

Definition at line 649 of file rte_eventdev.h.

  uint32_t max_event_port_enqueue_depth
Maximum number of events that can be enqueued at a time to an event port on this device.

A device that does not support burst enqueue (RTE_EVENT_DEV_CAP_BURST_MODE) will set this to 1.

Definition at line 656 of file rte_eventdev.h.

  uint8_t max_event_port_links
Maximum number of queues that can be linked to a single event port on this device.

Definition at line 663 of file rte_eventdev.h.

  int32_t max_num_events
A closed system event dev has a limit on the number of events it can manage at a time. Once the number of events tracked by an eventdev exceeds this number, any enqueues of NEW events will fail. An open system event dev does not have a limit and will specify this as -1.

Definition at line 666 of file rte_eventdev.h.

  uint32_t event_dev_cap
Event device capabilities flags (RTE_EVENT_DEV_CAP_*).

Definition at line 673 of file rte_eventdev.h.

  uint8_t max_single_link_event_port_queue_pairs
Maximum number of event ports and queues, supported by this device, that are optimized for (and only capable of) single-link configurations. These ports and queues are not accounted for in max_event_ports or max_event_queues.

Definition at line 675 of file rte_eventdev.h.

  uint8_t max_profiles_per_port
Maximum number of event queue link profiles per event port. A device that doesn't support multiple profiles will set this as 1.

Definition at line 681 of file rte_eventdev.h.

Author

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