d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
175d213bf8
numam-dpdk/lib/eventdev/rte_eventdev.h
Bruce Richardson 99a2dd955f lib: remove librte_ prefix from directory names 
There is no reason for the DPDK libraries to all have 'librte_' prefix on
the directory names. This prefix makes the directory names longer and also
makes it awkward to add features referring to individual libraries in the
build - should the lib names be specified with or without the prefix.
Therefore, we can just remove the library prefix and use the library's
unique name as the directory name, i.e. 'eal' rather than 'librte_eal'

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
2021-04-21 14:04:09 +02:00

2153 lines
80 KiB
C
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2016 Cavium, Inc.
* Copyright(c) 2016-2018 Intel Corporation.
* Copyright 2016 NXP
* All rights reserved.
*/
#ifndef _RTE_EVENTDEV_H_
#define _RTE_EVENTDEV_H_
/**
* @file
*
* RTE Event Device API
*
* In a polling model, lcores poll ethdev ports and associated rx queues
* directly to look for packet. In an event driven model, by contrast, lcores
* call the scheduler that selects packets for them based on programmer
* specified criteria. Eventdev library adds support for event driven
* programming model, which offer applications automatic multicore scaling,
* dynamic load balancing, pipelining, packet ingress order maintenance and
* synchronization services to simplify application packet processing.
*
* The Event Device API is composed of two parts:
*
* - The application-oriented Event API that includes functions to setup
* an event device (configure it, setup its queues, ports and start it), to
* establish the link between queues to port and to receive events, and so on.
*
* - The driver-oriented Event API that exports a function allowing
* an event poll Mode Driver (PMD) to simultaneously register itself as
* an event device driver.
*
* Event device components:
*
* +-----------------+
* | +-------------+ |
* +-------+ | | flow 0 | |
* |Packet | | +-------------+ |
* |event | | +-------------+ |
* | | | | flow 1 | |port_link(port0, queue0)
* +-------+ | +-------------+ | | +--------+
* +-------+ | +-------------+ o-----v-----o |dequeue +------+
* |Crypto | | | flow n | | | event +------->|Core 0|
* |work | | +-------------+ o----+ | port 0 | | |
* |done ev| | event queue 0 | | +--------+ +------+
* +-------+ +-----------------+ |
* +-------+ |
* |Timer | +-----------------+ | +--------+
* |expiry | | +-------------+ | +------o |dequeue +------+
* |event | | | flow 0 | o-----------o event +------->|Core 1|
* +-------+ | +-------------+ | +----o port 1 | | |
* Event enqueue | +-------------+ | | +--------+ +------+
* o-------------> | | flow 1 | | |
* enqueue( | +-------------+ | |
* queue_id, | | | +--------+ +------+
* flow_id, | +-------------+ | | | |dequeue |Core 2|
* sched_type, | | flow n | o-----------o event +------->| |
* event_type, | +-------------+ | | | port 2 | +------+
* subev_type, | event queue 1 | | +--------+
* event) +-----------------+ | +--------+
* | | |dequeue +------+
* +-------+ +-----------------+ | | event +------->|Core n|
* |Core | | +-------------+ o-----------o port n | | |
* |(SW) | | | flow 0 | | | +--------+ +--+---+
* |event | | +-------------+ | | |
* +-------+ | +-------------+ | | |
* ^ | | flow 1 | | | |
* | | +-------------+ o------+ |
* | | +-------------+ | |
* | | | flow n | | |
* | | +-------------+ | |
* | | event queue n | |
* | +-----------------+ |
* | |
* +-----------------------------------------------------------+
*
* Event device: A hardware or software-based event scheduler.
*
* Event: A unit of scheduling that encapsulates a packet or other datatype
* like SW generated event from the CPU, Crypto work completion notification,
* Timer expiry event notification etc as well as metadata.
* The metadata includes flow ID, scheduling type, event priority, event_type,
* sub_event_type etc.
*
* Event queue: A queue containing events that are scheduled by the event dev.
* An event queue contains events of different flows associated with scheduling
* types, such as atomic, ordered, or parallel.
*
* Event port: An application's interface into the event dev for enqueue and
* dequeue operations. Each event port can be linked with one or more
* event queues for dequeue operations.
*
* By default, all the functions of the Event Device API exported by a PMD
* are lock-free functions which assume to not be invoked in parallel on
* different logical cores to work on the same target object. For instance,
* the dequeue function of a PMD cannot be invoked in parallel on two logical
* cores to operates on same event port. Of course, this function
* can be invoked in parallel by different logical cores on different ports.
* It is the responsibility of the upper level application to enforce this rule.
*
* In all functions of the Event API, the Event device is
* designated by an integer >= 0 named the device identifier *dev_id*
*
* At the Event driver level, Event devices are represented by a generic
* data structure of type *rte_event_dev*.
*
* Event devices are dynamically registered during the PCI/SoC device probing
* phase performed at EAL initialization time.
* When an Event device is being probed, a *rte_event_dev* structure and
* a new device identifier are allocated for that device. Then, the
* event_dev_init() function supplied by the Event driver matching the probed
* device is invoked to properly initialize the device.
*
* The role of the device init function consists of resetting the hardware or
* software event driver implementations.
*
* If the device init operation is successful, the correspondence between
* the device identifier assigned to the new device and its associated
* *rte_event_dev* structure is effectively registered.
* Otherwise, both the *rte_event_dev* structure and the device identifier are
* freed.
*
* The functions exported by the application Event API to setup a device
* designated by its device identifier must be invoked in the following order:
* - rte_event_dev_configure()
* - rte_event_queue_setup()
* - rte_event_port_setup()
* - rte_event_port_link()
* - rte_event_dev_start()
*
* Then, the application can invoke, in any order, the functions
* exported by the Event API to schedule events, dequeue events, enqueue events,
* change event queue(s) to event port [un]link establishment and so on.
*
* Application may use rte_event_[queue/port]_default_conf_get() to get the
* default configuration to set up an event queue or event port by
* overriding few default values.
*
* If the application wants to change the configuration (i.e. call
* rte_event_dev_configure(), rte_event_queue_setup(), or
* rte_event_port_setup()), it must call rte_event_dev_stop() first to stop the
* device and then do the reconfiguration before calling rte_event_dev_start()
* again. The schedule, enqueue and dequeue functions should not be invoked
* when the device is stopped.
*
* Finally, an application can close an Event device by invoking the
* rte_event_dev_close() function.
*
* Each function of the application Event API invokes a specific function
* of the PMD that controls the target device designated by its device
* identifier.
*
* For this purpose, all device-specific functions of an Event driver are
* supplied through a set of pointers contained in a generic structure of type
* *event_dev_ops*.
* The address of the *event_dev_ops* structure is stored in the *rte_event_dev*
* structure by the device init function of the Event driver, which is
* invoked during the PCI/SoC device probing phase, as explained earlier.
*
* In other words, each function of the Event API simply retrieves the
* *rte_event_dev* structure associated with the device identifier and
* performs an indirect invocation of the corresponding driver function
* supplied in the *event_dev_ops* structure of the *rte_event_dev* structure.
*
* For performance reasons, the address of the fast-path functions of the
* Event driver is not contained in the *event_dev_ops* structure.
* Instead, they are directly stored at the beginning of the *rte_event_dev*
* structure to avoid an extra indirect memory access during their invocation.
*
* RTE event device drivers do not use interrupts for enqueue or dequeue
* operation. Instead, Event drivers export Poll-Mode enqueue and dequeue
* functions to applications.
*
* 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
* on different stages of application processing, cryptodev for generating
* crypto work completion notification etc
*
* The *dequeue* operation gets one or more events from the event ports.
* The application process the events and send to downstream event queue through
* rte_event_enqueue_burst() if it is an intermediate stage of event processing,
* on the final stage, the application may use Tx adapter API for maintaining
* the ingress order and then send the packet/event on the wire.
*
* The point at which events are scheduled to ports depends on the device.
* For hardware devices, scheduling occurs asynchronously without any software
* intervention. Software schedulers can either be distributed
* (each worker thread schedules events to its own port) or centralized
* (a dedicated thread schedules to all ports). Distributed software schedulers
* perform the scheduling in rte_event_dequeue_burst(), whereas centralized
* scheduler logic need a dedicated service core for scheduling.
* The RTE_EVENT_DEV_CAP_DISTRIBUTED_SCHED capability flag is not set
* indicates the device is centralized and thus needs a dedicated scheduling
* thread that repeatedly calls software specific scheduling function.
*
* 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
extern "C" {
#endif
#include <rte_common.h>
#include <rte_config.h>
#include <rte_errno.h>
#include <rte_mbuf_pool_ops.h>
#include <rte_memory.h>
#include <rte_mempool.h>
#include "rte_eventdev_trace_fp.h"
struct rte_mbuf; /* we just use mbuf pointers; no need to include rte_mbuf.h */
struct rte_event;
/* Event device capability bitmap flags */
#define RTE_EVENT_DEV_CAP_QUEUE_QOS (1ULL << 0)
/**< Event scheduling prioritization is based on the priority associated with
* each event queue.
*
* @see rte_event_queue_setup()
*/
#define RTE_EVENT_DEV_CAP_EVENT_QOS (1ULL << 1)
/**< Event scheduling prioritization is based on the priority associated with
* each event. Priority of each event is supplied in *rte_event* structure
* on each enqueue operation.
*
* @see rte_event_enqueue_burst()
*/
#define RTE_EVENT_DEV_CAP_DISTRIBUTED_SCHED (1ULL << 2)
/**< Event device operates in distributed scheduling mode.
* In distributed scheduling mode, event scheduling happens in HW or
* rte_event_dequeue_burst() or the combination of these two.
* If the flag is not set then eventdev is centralized and thus needs a
* dedicated service core that acts as a scheduling thread .
*
* @see 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_SCHED_TYPE_* type that it was created with.
*
* @see RTE_SCHED_TYPE_* 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()
*/
#define RTE_EVENT_DEV_CAP_IMPLICIT_RELEASE_DISABLE (1ULL << 5)
/**< Event device ports support disabling the implicit release feature, in
* which the port will release all unreleased events in its dequeue operation.
* If this capability is set and the port is configured with implicit release
* disabled, the application is responsible for explicitly releasing events
* using either the RTE_EVENT_OP_FORWARD or the RTE_EVENT_OP_RELEASE event
* enqueue operations.
*
* @see rte_event_dequeue_burst() rte_event_enqueue_burst()
*/
#define RTE_EVENT_DEV_CAP_NONSEQ_MODE (1ULL << 6)
/**< Event device is capable of operating in none sequential mode. The path
* of the event is not necessary to be sequential. Application can change
* the path of event at runtime. If the flag is not set, then event each event
* will follow a path from queue 0 to queue 1 to queue 2 etc. If the flag is
* set, events may be sent to queues in any order. If the flag is not set, the
* eventdev will return an error when the application enqueues an event for a
* qid which is not the next in the sequence.
*/
#define RTE_EVENT_DEV_CAP_RUNTIME_PORT_LINK (1ULL << 7)
/**< Event device is capable of configuring the queue/port link at runtime.
* If the flag is not set, the eventdev queue/port link is only can be
* configured during initialization.
*/
#define RTE_EVENT_DEV_CAP_MULTIPLE_QUEUE_PORT (1ULL << 8)
/**< Event device is capable of setting up the link between multiple queue
* with single port. If the flag is not set, the eventdev can only map a
* single queue to each port or map a single queue to many port.
*/
#define RTE_EVENT_DEV_CAP_CARRY_FLOW_ID (1ULL << 9)
/**< Event device preserves the flow ID from the enqueued
* event to the dequeued event if the flag is set. Otherwise,
* the content of this field is implementation dependent.
*/
/* Event device priority levels */
#define RTE_EVENT_DEV_PRIORITY_HIGHEST 0
/**< Highest priority expressed across eventdev subsystem
* @see rte_event_queue_setup(), rte_event_enqueue_burst()
* @see rte_event_port_link()
*/
#define RTE_EVENT_DEV_PRIORITY_NORMAL 128
/**< Normal priority expressed across eventdev subsystem
* @see rte_event_queue_setup(), rte_event_enqueue_burst()
* @see rte_event_port_link()
*/
#define RTE_EVENT_DEV_PRIORITY_LOWEST 255
/**< Lowest priority expressed across eventdev subsystem
* @see rte_event_queue_setup(), rte_event_enqueue_burst()
* @see rte_event_port_link()
*/
/**
* Get the total number of event devices that have been successfully
* initialised.
*
* @return
* The total number of usable event devices.
*/
uint8_t
rte_event_dev_count(void);
/**
* Get the device identifier for the named event device.
*
* @param name
* Event device name to select the event device identifier.
*
* @return
* Returns event device identifier on success.
* - <0: Failure to find named event device.
*/
int
rte_event_dev_get_dev_id(const char *name);
/**
* Return the NUMA socket to which a device is connected.
*
* @param dev_id
* The identifier of the device.
* @return
* The NUMA socket id to which the device is connected or
* a default of zero if the socket could not be determined.
* -(-EINVAL) dev_id value is out of range.
*/
int
rte_event_dev_socket_id(uint8_t dev_id);
/**
* Event device information
*/
struct rte_event_dev_info {
const char *driver_name; /**< Event driver name */
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;
/**< Maximum supported global dequeue timeout(ns) by this device */
uint32_t dequeue_timeout_ns;
/**< Configured global dequeue timeout(ns) for this device */
uint8_t max_event_queues;
/**< Maximum event_queues supported by this device */
uint32_t max_event_queue_flows;
/**< Maximum supported flows in an event queue by this device*/
uint8_t max_event_queue_priority_levels;
/**< Maximum number of event queue priority levels by this device.
* Valid when the device has RTE_EVENT_DEV_CAP_QUEUE_QOS capability
*/
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
*/
uint8_t max_event_ports;
/**< Maximum number of event ports supported by this device */
uint8_t max_event_port_dequeue_depth;
/**< Maximum number of events can be dequeued at a time from an
* event port by this device.
* A device that does not support bulk dequeue will set this as 1.
*/
uint32_t max_event_port_enqueue_depth;
/**< Maximum number of events can be enqueued at a time from an
* event port by this device.
* A device that does not support bulk enqueue will set this as 1.
*/
uint8_t max_event_port_links;
/**< Maximum number of queues that can be linked to a single event
* port by this device.
*/
int32_t max_num_events;
/**< A *closed system* event dev has a limit on the number of events it
* can manage at a time. An *open system* event dev does not have a
* limit and will specify this as -1.
*/
uint32_t event_dev_cap;
/**< Event device capabilities(RTE_EVENT_DEV_CAP_)*/
uint8_t max_single_link_event_port_queue_pairs;
/**< Maximum number of event ports and queues that are optimized for
* (and only capable of) single-link configurations supported by this
* device. These ports and queues are not accounted for in
* max_event_ports or max_event_queues.
*/
};
/**
* Retrieve the contextual information of an event device.
*
* @param dev_id
* The identifier of the device.
*
* @param[out] dev_info
* A pointer to a structure of type *rte_event_dev_info* to be filled with the
* contextual information of the device.
*
* @return
* - 0: Success, driver updates the contextual information of the event device
* - <0: Error code returned by the driver info get function.
*
*/
int
rte_event_dev_info_get(uint8_t dev_id, struct rte_event_dev_info *dev_info);
/**
* The count of ports.
*/
#define RTE_EVENT_DEV_ATTR_PORT_COUNT 0
/**
* The count of queues.
*/
#define RTE_EVENT_DEV_ATTR_QUEUE_COUNT 1
/**
* The status of the device, zero for stopped, non-zero for started.
*/
#define RTE_EVENT_DEV_ATTR_STARTED 2
/**
* Get an attribute from a device.
*
* @param dev_id Eventdev id
* @param attr_id The attribute ID to retrieve
* @param[out] attr_value A pointer that will be filled in with the attribute
* value if successful.
*
* @return
* - 0: Successfully retrieved attribute value
* - -EINVAL: Invalid device or *attr_id* provided, or *attr_value* is NULL
*/
int
rte_event_dev_attr_get(uint8_t dev_id, uint32_t attr_id,
uint32_t *attr_value);
/* Event device configuration bitmap flags */
#define RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT (1ULL << 0)
/**< Override the global *dequeue_timeout_ns* and use per dequeue timeout in ns.
* @see rte_event_dequeue_timeout_ticks(), rte_event_dequeue_burst()
*/
/** Event device configuration structure */
struct rte_event_dev_config {
uint32_t dequeue_timeout_ns;
/**< rte_event_dequeue_burst() timeout on this device.
* 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;
/**< 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_queues* which previously
* provided in rte_event_dev_info_get()
*/
uint8_t nb_event_ports;
/**< Number of event ports to configure on this device.
* This value cannot exceed the *max_event_ports* which previously
* provided in rte_event_dev_info_get()
*/
uint32_t nb_event_queue_flows;
/**< Number of flows for any event queue on this device.
* This value cannot exceed the *max_event_queue_flows* which previously
* provided in rte_event_dev_info_get()
*/
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().
* 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().
* Ignored when device is not RTE_EVENT_DEV_CAP_BURST_MODE capable.
* @see rte_event_port_setup()
*/
uint32_t event_dev_cfg;
/**< Event device config flags(RTE_EVENT_DEV_CFG_)*/
uint8_t nb_single_link_event_port_queues;
/**< Number of event ports and queues that will be singly-linked to
* each other. These are a subset of the overall event ports and
* queues; this value cannot exceed *nb_event_ports* or
* *nb_event_queues*. If the device has ports and queues that are
* optimized for single-link usage, this field is a hint for how many
* to allocate; otherwise, regular event ports and queues can be used.
*/
};
/**
* Configure an event device.
*
* This function must be invoked first before any other function in the
* API. This function can also be re-invoked when a device is in the
* stopped state.
*
* The caller may use rte_event_dev_info_get() to get the capability of each
* resources available for this event device.
*
* @param dev_id
* The identifier of the device to configure.
* @param dev_conf
* The event device configuration structure.
*
* @return
* - 0: Success, device configured.
* - <0: Error code returned by the driver configuration function.
*/
int
rte_event_dev_configure(uint8_t dev_id,
const struct rte_event_dev_config *dev_conf);
/* Event queue specific APIs */
/* Event queue configuration bitmap flags */
#define RTE_EVENT_QUEUE_CFG_ALL_TYPES (1ULL << 0)
/**< Allow ATOMIC,ORDERED,PARALLEL schedule type enqueue
*
* @see RTE_SCHED_TYPE_ORDERED, RTE_SCHED_TYPE_ATOMIC, RTE_SCHED_TYPE_PARALLEL
* @see rte_event_enqueue_burst()
*/
#define RTE_EVENT_QUEUE_CFG_SINGLE_LINK (1ULL << 1)
/**< This event queue links only to a single event port.
*
* @see rte_event_port_setup(), rte_event_port_link()
*/
/** Event queue configuration structure */
struct rte_event_queue_conf {
uint32_t nb_atomic_flows;
/**< The maximum number of active flows this queue can track at any
* given time. If the queue is configured for atomic scheduling (by
* applying the RTE_EVENT_QUEUE_CFG_ALL_TYPES flag to event_queue_cfg
* or RTE_SCHED_TYPE_ATOMIC flag to schedule_type), 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
* reordered by this queue. In other words, the number of entries in
* this queue’s reorder buffer.When the number of events in the
* reorder buffer reaches to *nb_atomic_order_sequences* then the
* 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.
* If the queue is configured for ordered scheduling (by applying the
* RTE_EVENT_QUEUE_CFG_ALL_TYPES flag to event_queue_cfg or
* RTE_SCHED_TYPE_ORDERED flag to schedule_type), 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 schedule_type;
/**< Queue schedule type(RTE_SCHED_TYPE_*).
* Valid when RTE_EVENT_QUEUE_CFG_ALL_TYPES bit is not set in
* event_queue_cfg.
*/
uint8_t priority;
/**< Priority for this event queue relative to other event queues.
* The requested priority should in the range of
* [RTE_EVENT_DEV_PRIORITY_HIGHEST, RTE_EVENT_DEV_PRIORITY_LOWEST].
* The implementation shall normalize the requested priority to
* event device supported priority value.
* Valid when the device has RTE_EVENT_DEV_CAP_QUEUE_QOS capability
*/
};
/**
* Retrieve the default configuration information of an event queue designated
* by its *queue_id* from the event driver for an event device.
*
* This function intended to be used in conjunction with rte_event_queue_setup()
* where caller needs to set up the queue by overriding few default values.
*
* @param dev_id
* The identifier of the device.
* @param queue_id
* The index of the event queue to get the configuration information.
* The value must be in the range [0, nb_event_queues - 1]
* previously supplied to rte_event_dev_configure().
* @param[out] queue_conf
* The pointer to the default event queue configuration data.
* @return
* - 0: Success, driver updates the default event queue configuration data.
* - <0: Error code returned by the driver info get function.
*
* @see rte_event_queue_setup()
*
*/
int
rte_event_queue_default_conf_get(uint8_t dev_id, uint8_t queue_id,
struct rte_event_queue_conf *queue_conf);
/**
* Allocate and set up an event queue for an event device.
*
* @param dev_id
* The identifier of the device.
* @param queue_id
* The index of the event queue to setup. The value must be in the range
* [0, nb_event_queues - 1] previously supplied to rte_event_dev_configure().
* @param queue_conf
* The pointer to the configuration data to be used for the event queue.
* NULL value is allowed, in which case default configuration used.
*
* @see rte_event_queue_default_conf_get()
*
* @return
* - 0: Success, event queue correctly set up.
* - <0: event queue configuration failed
*/
int
rte_event_queue_setup(uint8_t dev_id, uint8_t queue_id,
const struct rte_event_queue_conf *queue_conf);
/**
* The priority of the queue.
*/
#define RTE_EVENT_QUEUE_ATTR_PRIORITY 0
/**
* The number of atomic flows configured for the queue.
*/
#define RTE_EVENT_QUEUE_ATTR_NB_ATOMIC_FLOWS 1
/**
* The number of atomic order sequences configured for the queue.
*/
#define RTE_EVENT_QUEUE_ATTR_NB_ATOMIC_ORDER_SEQUENCES 2
/**
* The cfg flags for the queue.
*/
#define RTE_EVENT_QUEUE_ATTR_EVENT_QUEUE_CFG 3
/**
* The schedule type of the queue.
*/
#define RTE_EVENT_QUEUE_ATTR_SCHEDULE_TYPE 4
/**
* Get an attribute from a queue.
*
* @param dev_id
* Eventdev id
* @param queue_id
* Eventdev queue id
* @param attr_id
* The attribute ID to retrieve
* @param[out] attr_value
* A pointer that will be filled in with the attribute value if successful
*
* @return
* - 0: Successfully returned value
* - -EINVAL: invalid device, queue or attr_id provided, or attr_value was
* NULL
* - -EOVERFLOW: returned when attr_id is set to
* RTE_EVENT_QUEUE_ATTR_SCHEDULE_TYPE and event_queue_cfg is set to
* RTE_EVENT_QUEUE_CFG_ALL_TYPES
*/
int
rte_event_queue_attr_get(uint8_t dev_id, uint8_t queue_id, uint32_t attr_id,
uint32_t *attr_value);
/* Event port specific APIs */
/* Event port configuration bitmap flags */
#define RTE_EVENT_PORT_CFG_DISABLE_IMPL_REL (1ULL << 0)
/**< Configure the port not to release outstanding events in
* rte_event_dev_dequeue_burst(). If set, all events received through
* the port must be explicitly released with RTE_EVENT_OP_RELEASE or
* RTE_EVENT_OP_FORWARD. Must be unset if the device is not
* RTE_EVENT_DEV_CAP_IMPLICIT_RELEASE_DISABLE capable.
*/
#define RTE_EVENT_PORT_CFG_SINGLE_LINK (1ULL << 1)
/**< This event port links only to a single event queue.
*
* @see rte_event_port_setup(), rte_event_port_link()
*/
/** Event port configuration structure */
struct rte_event_port_conf {
int32_t new_event_threshold;
/**< A backpressure threshold for new event enqueues on this port.
* Use for *closed system* event dev where event capacity is limited,
* and cannot exceed the capacity of the event dev.
* Configuring ports with different thresholds can make higher priority
* traffic less likely to be backpressured.
* For example, a port used to inject NIC Rx packets into the event dev
* 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 was previously supplied to rte_event_dev_configure().
* This should be set to '-1' for *open system*.
*/
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().
* Ignored when device is not RTE_EVENT_DEV_CAP_BURST_MODE capable.
*/
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().
* Ignored when device is not RTE_EVENT_DEV_CAP_BURST_MODE capable.
*/
uint32_t event_port_cfg; /**< Port cfg flags(EVENT_PORT_CFG_) */
};
/**
* Retrieve the default configuration information of an event port designated
* by its *port_id* from the event driver for an event device.
*
* This function intended to be used in conjunction with rte_event_port_setup()
* where caller needs to set up the port by overriding few default values.
*
* @param dev_id
* The identifier of the device.
* @param port_id
* The index of the event port to get the configuration information.
* The value must be in the range [0, nb_event_ports - 1]
* previously supplied to rte_event_dev_configure().
* @param[out] port_conf
* The pointer to the default event port configuration data
* @return
* - 0: Success, driver updates the default event port configuration data.
* - <0: Error code returned by the driver info get function.
*
* @see rte_event_port_setup()
*
*/
int
rte_event_port_default_conf_get(uint8_t dev_id, uint8_t port_id,
struct rte_event_port_conf *port_conf);
/**
* Allocate and set up an event port for an event device.
*
* @param dev_id
* The identifier of the device.
* @param port_id
* The index of the event port to setup. The value must be in the range
* [0, nb_event_ports - 1] previously supplied to rte_event_dev_configure().
* @param port_conf
* The pointer to the configuration data to be used for the queue.
* NULL value is allowed, in which case default configuration used.
*
* @see rte_event_port_default_conf_get()
*
* @return
* - 0: Success, event port correctly set up.
* - <0: Port configuration failed
* - (-EDQUOT) Quota exceeded(Application tried to link the queue configured
* with RTE_EVENT_QUEUE_CFG_SINGLE_LINK to more than one event ports)
*/
int
rte_event_port_setup(uint8_t dev_id, uint8_t port_id,
const struct rte_event_port_conf *port_conf);
/**
* The queue depth of the port on the enqueue side
*/
#define RTE_EVENT_PORT_ATTR_ENQ_DEPTH 0
/**
* The queue depth of the port on the dequeue side
*/
#define RTE_EVENT_PORT_ATTR_DEQ_DEPTH 1
/**
* The new event threshold of the port
*/
#define RTE_EVENT_PORT_ATTR_NEW_EVENT_THRESHOLD 2
/**
* The implicit release disable attribute of the port
*/
#define RTE_EVENT_PORT_ATTR_IMPLICIT_RELEASE_DISABLE 3
/**
* Get an attribute from a port.
*
* @param dev_id
* Eventdev id
* @param port_id
* Eventdev port id
* @param attr_id
* The attribute ID to retrieve
* @param[out] attr_value
* A pointer that will be filled in with the attribute value if successful
*
* @return
* - 0: Successfully returned value
* - (-EINVAL) Invalid device, port or attr_id, or attr_value was NULL
*/
int
rte_event_port_attr_get(uint8_t dev_id, uint8_t port_id, uint32_t attr_id,
uint32_t *attr_value);
/**
* Start an event device.
*
* The device start step is the last one and consists of setting the event
* queues to start accepting the events and schedules to event ports.
*
* On success, all basic functions exported by the API (event enqueue,
* event dequeue and so on) can be invoked.
*
* @param dev_id
* Event device identifier
* @return
* - 0: Success, device started.
* - -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);
/**
* Stop an event device.
*
* This function causes all queued events to be drained, including those
* residing in event ports. While draining events out of the device, this
* function calls the user-provided flush callback (if one was registered) once
* per event.
*
* The device can be restarted with a call to rte_event_dev_start(). Threads
* that continue to enqueue/dequeue while the device is stopped, or being
* stopped, will result in undefined behavior. This includes event adapters,
* which must be stopped prior to stopping the eventdev.
*
* @param dev_id
* Event device identifier.
*
* @see rte_event_dev_stop_flush_callback_register()
*/
void
rte_event_dev_stop(uint8_t dev_id);
typedef void (*eventdev_stop_flush_t)(uint8_t dev_id, struct rte_event event,
void *arg);
/**< Callback function called during rte_event_dev_stop(), invoked once per
* flushed event.
*/
/**
* Registers a callback function to be invoked during rte_event_dev_stop() for
* each flushed event. This function can be used to properly dispose of queued
* events, for example events containing memory pointers.
*
* The callback function is only registered for the calling process. The
* callback function must be registered in every process that can call
* rte_event_dev_stop().
*
* To unregister a callback, call this function with a NULL callback pointer.
*
* @param dev_id
* The identifier of the device.
* @param callback
* Callback function invoked once per flushed event.
* @param userdata
* Argument supplied to callback.
*
* @return
* - 0 on success.
* - -EINVAL if *dev_id* is invalid
*
* @see rte_event_dev_stop()
*/
int
rte_event_dev_stop_flush_callback_register(uint8_t dev_id,
eventdev_stop_flush_t callback, void *userdata);
/**
* Close an event device. The device cannot be restarted!
*
* @param dev_id
* Event device identifier
*
* @return
* - 0 on successfully closing device
* - <0 on failure to close device
* - (-EAGAIN) if device is busy
*/
int
rte_event_dev_close(uint8_t dev_id);
/**
* Event vector structure.
*/
struct rte_event_vector {
uint16_t nb_elem;
/**< Number of elements in this event vector. */
uint16_t rsvd : 15;
/**< Reserved for future use */
uint16_t attr_valid : 1;
/**< Indicates that the below union attributes have valid information.
*/
union {
/* Used by Rx/Tx adapter.
* Indicates that all the elements in this vector belong to the
* same port and queue pair when originating from Rx adapter,
* valid only when event type is ETHDEV_VECTOR or
* ETH_RX_ADAPTER_VECTOR.
* Can also be used to indicate the Tx adapter the destination
* port and queue of the mbufs in the vector
*/
struct {
uint16_t port;
/* Ethernet device port id. */
uint16_t queue;
/* Ethernet device queue id. */
};
};
/**< Union to hold common attributes of the vector array. */
uint64_t impl_opaque;
/**< Implementation specific opaque value.
* An implementation may use this field to hold implementation specific
* value to share between dequeue and enqueue operation.
* The application should not modify this field.
*/
union {
struct rte_mbuf *mbufs[0];
void *ptrs[0];
uint64_t *u64s[0];
} __rte_aligned(16);
/**< Start of the vector array union. Depending upon the event type the
* vector array can be an array of mbufs or pointers or opaque u64
* values.
*/
};
/* Scheduler type definitions */
#define RTE_SCHED_TYPE_ORDERED 0
/**< Ordered scheduling
*
* Events from an ordered flow of an event queue can be scheduled to multiple
* ports for concurrent processing while maintaining the original event order.
* This scheme enables the user to achieve high single flow throughput by
* avoiding SW synchronization for ordering between ports which bound to cores.
*
* The source flow ordering from an event queue is maintained when events are
* enqueued to their destination queue within the same ordered flow context.
* An event port holds the context until application call
* rte_event_dequeue_burst() from the same port, which implicitly releases
* the context.
* User may allow the scheduler to release the context earlier than that
* by invoking rte_event_enqueue_burst() with RTE_EVENT_OP_RELEASE operation.
*
* Events from the source queue appear in their original order when dequeued
* from a destination queue.
* Event ordering is based on the received event(s), but also other
* (newly allocated or stored) events are ordered when enqueued within the same
* ordered context. Events not enqueued (e.g. released or stored) within the
* context are considered missing from reordering and are skipped at this time
* (but can be ordered again within another context).
*
* @see rte_event_queue_setup(), rte_event_dequeue_burst(), RTE_EVENT_OP_RELEASE
*/
#define RTE_SCHED_TYPE_ATOMIC 1
/**< Atomic scheduling
*
* Events from an atomic flow of an event queue can be scheduled only to a
* single port at a time. The port is guaranteed to have exclusive (atomic)
* access to the associated flow context, which enables the user to avoid SW
* synchronization. Atomic flows also help to maintain event ordering
* since only one port at a time can process events from a flow of an
* event queue.
*
* The atomic queue synchronization context is dedicated to the port until
* application call rte_event_dequeue_burst() from the same port,
* which implicitly releases the context. User may allow the scheduler to
* release the context earlier than that by invoking rte_event_enqueue_burst()
* with RTE_EVENT_OP_RELEASE operation.
*
* @see rte_event_queue_setup(), rte_event_dequeue_burst(), RTE_EVENT_OP_RELEASE
*/
#define RTE_SCHED_TYPE_PARALLEL 2
/**< Parallel scheduling
*
* The scheduler performs priority scheduling, load balancing, etc. functions
* but does not provide additional event synchronization or ordering.
* It is free to schedule events from a single parallel flow of an event queue
* to multiple events ports for concurrent processing.
* The application is responsible for flow context synchronization and
* event ordering (SW synchronization).
*
* @see rte_event_queue_setup(), rte_event_dequeue_burst()
*/
/* Event types to classify the event source */
#define RTE_EVENT_TYPE_ETHDEV 0x0
/**< The event generated from ethdev subsystem */
#define RTE_EVENT_TYPE_CRYPTODEV 0x1
/**< The event generated from crypodev subsystem */
#define RTE_EVENT_TYPE_TIMER 0x2
/**< The event generated from event timer adapter */
#define RTE_EVENT_TYPE_CPU 0x3
/**< The event generated from cpu for pipelining.
* Application may use *sub_event_type* to further classify the event
*/
#define RTE_EVENT_TYPE_ETH_RX_ADAPTER 0x4
/**< The event generated from event eth Rx adapter */
#define RTE_EVENT_TYPE_VECTOR 0x8
/**< Indicates that event is a vector.
* All vector event types should be a logical OR of EVENT_TYPE_VECTOR.
* This simplifies the pipeline design as one can split processing the events
* between vector events and normal event across event types.
* Example:
* if (ev.event_type & RTE_EVENT_TYPE_VECTOR) {
* // Classify and handle vector event.
* } else {
* // Classify and handle event.
* }
*/
#define RTE_EVENT_TYPE_ETHDEV_VECTOR \
(RTE_EVENT_TYPE_VECTOR | RTE_EVENT_TYPE_ETHDEV)
/**< The event vector generated from ethdev subsystem */
#define RTE_EVENT_TYPE_CPU_VECTOR (RTE_EVENT_TYPE_VECTOR | RTE_EVENT_TYPE_CPU)
/**< The event vector generated from cpu for pipelining. */
#define RTE_EVENT_TYPE_ETH_RX_ADAPTER_VECTOR \
(RTE_EVENT_TYPE_VECTOR | RTE_EVENT_TYPE_ETH_RX_ADAPTER)
/**< The event vector generated from eth Rx adapter. */
#define RTE_EVENT_TYPE_MAX 0x10
/**< Maximum number of event types */
/* Event enqueue operations */
#define RTE_EVENT_OP_NEW 0
/**< The event producers use this operation to inject a new event to the
* event device.
*/
#define RTE_EVENT_OP_FORWARD 1
/**< The CPU use this operation to forward the event to different event queue or
* change to new application specific flow or schedule type to enable
* pipelining.
*
* This operation must only be enqueued to the same port that the
* event to be forwarded was dequeued from.
*/
#define RTE_EVENT_OP_RELEASE 2
/**< Release the flow context associated with the schedule type.
*
* If current flow's scheduler type method is *RTE_SCHED_TYPE_ATOMIC*
* then this function hints the scheduler that the user has completed critical
* section processing in the current atomic context.
* The scheduler is now allowed to schedule events from the same flow from
* an event queue to another port. However, the context may be still held
* until the next rte_event_dequeue_burst() call, this call allows but does not
* force the scheduler to release the context early.
*
* Early atomic context release may increase parallelism and thus system
* performance, but the user needs to design carefully the split into critical
* vs non-critical sections.
*
* If current flow's scheduler type method is *RTE_SCHED_TYPE_ORDERED*
* then this function hints the scheduler that the user has done all that need
* to maintain event order in the current ordered context.
* The scheduler is allowed to release the ordered context of this port and
* avoid reordering any following enqueues.
*
* Early ordered context release may increase parallelism and thus system
* performance.
*
* If current flow's scheduler type method is *RTE_SCHED_TYPE_PARALLEL*
* or no scheduling context is held then this function may be an NOOP,
* depending on the implementation.
*
* This operation must only be enqueued to the same port that the
* event to be released was dequeued from.
*
*/
/**
* The generic *rte_event* structure to hold the event attributes
* for dequeue and enqueue operation
*/
RTE_STD_C11
struct rte_event {
/** WORD0 */
union {
uint64_t event;
/** Event attributes for dequeue or enqueue operation */
struct {
uint32_t flow_id:20;
/**< Targeted flow identifier for the enqueue and
* dequeue operation.
* The value must be in the range of
* [0, nb_event_queue_flows - 1] which
* previously supplied to rte_event_dev_configure().
*/
uint32_t sub_event_type:8;
/**< Sub-event types based on the event source.
* @see RTE_EVENT_TYPE_CPU
*/
uint32_t event_type:4;
/**< Event type to classify the event source.
* @see RTE_EVENT_TYPE_ETHDEV, (RTE_EVENT_TYPE_*)
*/
uint8_t op:2;
/**< The type of event enqueue operation - new/forward/
* etc.This field is not preserved across an instance
* and is undefined on dequeue.
* @see RTE_EVENT_OP_NEW, (RTE_EVENT_OP_*)
*/
uint8_t rsvd:4;
/**< Reserved for future use */
uint8_t sched_type:2;
/**< Scheduler synchronization type (RTE_SCHED_TYPE_*)
* associated with flow id on a given event queue
* for the enqueue and dequeue operation.
*/
uint8_t queue_id;
/**< Targeted event queue identifier for the enqueue or
* dequeue operation.
* The value must be in the range of
* [0, nb_event_queues - 1] which previously supplied to
* rte_event_dev_configure().
*/
uint8_t priority;
/**< Event priority relative to other events in the
* event queue. The requested priority should in the
* range of [RTE_EVENT_DEV_PRIORITY_HIGHEST,
* RTE_EVENT_DEV_PRIORITY_LOWEST].
* The implementation shall normalize the requested
* priority to supported priority value.
* Valid when the device has
* RTE_EVENT_DEV_CAP_EVENT_QOS capability.
*/
uint8_t impl_opaque;
/**< Implementation specific opaque value.
* An implementation may use this field to hold
* implementation specific value to share between
* dequeue and enqueue operation.
* The application should not modify this field.
*/
};
};
/** WORD1 */
union {
uint64_t u64;
/**< Opaque 64-bit value */
void *event_ptr;
/**< Opaque event pointer */
struct rte_mbuf *mbuf;
/**< mbuf pointer if dequeued event is associated with mbuf */
struct rte_event_vector *vec;
/**< Event vector pointer. */
};
};
/* Ethdev Rx adapter capability bitmap flags */
#define RTE_EVENT_ETH_RX_ADAPTER_CAP_INTERNAL_PORT 0x1
/**< This flag is sent when the packet transfer mechanism is in HW.
* Ethdev can send packets to the event device using internal event port.
*/
#define RTE_EVENT_ETH_RX_ADAPTER_CAP_MULTI_EVENTQ 0x2
/**< Adapter supports multiple event queues per ethdev. Every ethdev
* Rx queue can be connected to a unique event queue.
*/
#define RTE_EVENT_ETH_RX_ADAPTER_CAP_OVERRIDE_FLOW_ID 0x4
/**< The application can override the adapter generated flow ID in the
* event. This flow ID can be specified when adding an ethdev Rx queue
* to the adapter using the ev member of struct rte_event_eth_rx_adapter
* @see struct rte_event_eth_rx_adapter_queue_conf::ev
* @see struct rte_event_eth_rx_adapter_queue_conf::rx_queue_flags
*/
#define RTE_EVENT_ETH_RX_ADAPTER_CAP_EVENT_VECTOR 0x8
/**< Adapter supports event vectorization per ethdev. */
/**
* Retrieve the event device's ethdev Rx adapter capabilities for the
* specified ethernet port
*
* @param dev_id
* The identifier of the device.
*
* @param eth_port_id
* The identifier of the ethernet device.
*
* @param[out] caps
* A pointer to memory filled with Rx event adapter capabilities.
*
* @return
* - 0: Success, driver provides Rx event adapter capabilities for the
* ethernet device.
* - <0: Error code returned by the driver function.
*
*/
int
rte_event_eth_rx_adapter_caps_get(uint8_t dev_id, uint16_t eth_port_id,
uint32_t *caps);
#define RTE_EVENT_TIMER_ADAPTER_CAP_INTERNAL_PORT (1ULL << 0)
/**< This flag is set when the timer mechanism is in HW. */
#define RTE_EVENT_TIMER_ADAPTER_CAP_PERIODIC (1ULL << 1)
/**< This flag is set if periodic mode is supported. */
/**
* Retrieve the event device's timer adapter capabilities.
*
* @param dev_id
* The identifier of the device.
*
* @param[out] caps
* A pointer to memory to be filled with event timer adapter capabilities.
*
* @return
* - 0: Success, driver provided event timer adapter capabilities.
* - <0: Error code returned by the driver function.
*/
int
rte_event_timer_adapter_caps_get(uint8_t dev_id, uint32_t *caps);
/* Crypto adapter capability bitmap flag */
#define RTE_EVENT_CRYPTO_ADAPTER_CAP_INTERNAL_PORT_OP_NEW 0x1
/**< Flag indicates HW is capable of generating events in
* RTE_EVENT_OP_NEW enqueue operation. Cryptodev will send
* packets to the event device as new events using an internal
* event port.
*/
#define RTE_EVENT_CRYPTO_ADAPTER_CAP_INTERNAL_PORT_OP_FWD 0x2
/**< Flag indicates HW is capable of generating events in
* RTE_EVENT_OP_FORWARD enqueue operation. Cryptodev will send
* packets to the event device as forwarded event using an
* internal event port.
*/
#define RTE_EVENT_CRYPTO_ADAPTER_CAP_INTERNAL_PORT_QP_EV_BIND 0x4
/**< Flag indicates HW is capable of mapping crypto queue pair to
* event queue.
*/
#define RTE_EVENT_CRYPTO_ADAPTER_CAP_SESSION_PRIVATE_DATA 0x8
/**< Flag indicates HW/SW supports a mechanism to store and retrieve
* the private data information along with the crypto session.
*/
/**
* Retrieve the event device's crypto adapter capabilities for the
* specified cryptodev device
*
* @param dev_id
* The identifier of the device.
*
* @param cdev_id
* The identifier of the cryptodev device.
*
* @param[out] caps
* A pointer to memory filled with event adapter capabilities.
* It is expected to be pre-allocated & initialized by caller.
*
* @return
* - 0: Success, driver provides event adapter capabilities for the
* cryptodev device.
* - <0: Error code returned by the driver function.
*
*/
int
rte_event_crypto_adapter_caps_get(uint8_t dev_id, uint8_t cdev_id,
uint32_t *caps);
/* Ethdev Tx adapter capability bitmap flags */
#define RTE_EVENT_ETH_TX_ADAPTER_CAP_INTERNAL_PORT 0x1
/**< This flag is sent when the PMD supports a packet transmit callback
*/
#define RTE_EVENT_ETH_TX_ADAPTER_CAP_EVENT_VECTOR 0x2
/**< Indicates that the Tx adapter is capable of handling event vector of
* mbufs.
*/
/**
* Retrieve the event device's eth Tx adapter capabilities
*
* @param dev_id
* The identifier of the device.
*
* @param eth_port_id
* The identifier of the ethernet device.
*
* @param[out] caps
* A pointer to memory filled with eth Tx adapter capabilities.
*
* @return
* - 0: Success, driver provides eth Tx adapter capabilities.
* - <0: Error code returned by the driver function.
*
*/
int
rte_event_eth_tx_adapter_caps_get(uint8_t dev_id, uint16_t eth_port_id,
uint32_t *caps);
struct rte_eventdev_ops;
struct rte_eventdev;
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 */
typedef uint16_t (*event_tx_adapter_enqueue)(void *port,
struct rte_event ev[], uint16_t nb_events);
/**< @internal Enqueue burst of events on port of a device */
typedef uint16_t (*event_tx_adapter_enqueue_same_dest)(void *port,
struct rte_event ev[], uint16_t nb_events);
/**< @internal Enqueue burst of events on port of a device supporting
* burst having same destination Ethernet port & Tx queue.
*/
typedef uint16_t (*event_crypto_adapter_enqueue)(void *port,
struct rte_event ev[], uint16_t nb_events);
/**< @internal Enqueue burst of events on crypto adapter */
#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. */
struct rte_event_port_conf *ports_cfg;
/**< Array of port configuration structures. */
struct rte_event_queue_conf *queues_cfg;
/**< Array of queue configuration structures. */
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. */
uint8_t service_inited;
/* Service initialization state */
uint32_t service_id;
/* Service ID*/
void *dev_stop_flush_arg;
/**< User-provided argument for event flush function */
RTE_STD_C11
uint8_t dev_started : 1;
/**< Device state: STARTED(1)/STOPPED(0) */
char name[RTE_EVENTDEV_NAME_MAX_LEN];
/**< Unique identifier name */
uint64_t reserved_64s[4]; /**< Reserved for future fields */
void *reserved_ptrs[4]; /**< Reserved for future fields */
} __rte_cache_aligned;
/** @internal The data structure associated with each event device. */
struct rte_eventdev {
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. */
event_tx_adapter_enqueue_same_dest txa_enqueue_same_dest;
/**< Pointer to PMD eth Tx adapter burst enqueue function with
* events destined to same Eth port & Tx queue.
*/
event_tx_adapter_enqueue txa_enqueue;
/**< Pointer to PMD eth Tx adapter enqueue function. */
struct rte_eventdev_data *data;
/**< Pointer to device data */
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 */
event_crypto_adapter_enqueue ca_enqueue;
/**< Pointer to PMD crypto adapter enqueue function. */
uint64_t reserved_64s[4]; /**< Reserved for future fields */
void *reserved_ptrs[3]; /**< Reserved for future fields */
} __rte_cache_aligned;
extern struct rte_eventdev *rte_eventdevs;
/** @internal The pool of rte_eventdev structures. */
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
rte_eventdev_trace_enq_burst(dev_id, port_id, ev, nb_events, fn);
/*
* 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*
* structure on an event device designated by its *dev_id* through the event
* port specified by *port_id*. Each event object specifies the event queue on
* which it will be enqueued.
*
* The *nb_events* parameter is the number of event objects to enqueue which are
* supplied in the *ev* array of *rte_event* structure.
*
* Event operations RTE_EVENT_OP_FORWARD and RTE_EVENT_OP_RELEASE must only be
* enqueued to the same port that their associated events were dequeued from.
*
* The rte_event_enqueue_burst() function returns the number of
* events objects it actually enqueued. A return value equal to *nb_events*
* means that all event objects have been enqueued.
*
* @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_attr_get(...RTE_EVENT_PORT_ATTR_ENQ_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_attr_get(), RTE_EVENT_PORT_ATTR_ENQ_DEPTH
*/
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_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_attr_get(...RTE_EVENT_PORT_ATTR_ENQ_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_attr_get(), RTE_EVENT_PORT_ATTR_ENQ_DEPTH
* @see 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_attr_get(...RTE_EVENT_PORT_ATTR_ENQ_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_attr_get(), RTE_EVENT_PORT_ATTR_ENQ_DEPTH
* @see 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()
*
* If the device is configured with RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT flag
* then application can use this function to convert timeout value in
* nanoseconds to implementations specific timeout value supplied in
* rte_event_dequeue_burst()
*
* @param dev_id
* The identifier of the device.
* @param ns
* Wait time in nanosecond
* @param[out] timeout_ticks
* Value for the *timeout_ticks* parameter in rte_event_dequeue_burst()
*
* @return
* - 0 on success.
* - -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()
*
*/
int
rte_event_dequeue_timeout_ticks(uint8_t dev_id, uint64_t ns,
uint64_t *timeout_ticks);
/**
* Dequeue a burst of events objects or an event object from the event port
* designated by its *event_port_id*, on an event device designated
* by its *dev_id*.
*
* rte_event_dequeue_burst() does not dictate the specifics of scheduling
* algorithm as each eventdev driver may have different criteria to schedule
* an event. However, in general, from an application perspective scheduler may
* use the following scheme to dispatch an event to the port.
*
* 1) Selection of event queue based on
* a) The list of event queues are linked to the event port.
* b) If the device has RTE_EVENT_DEV_CAP_QUEUE_QOS capability then event
* queue selection from list is based on event queue priority relative to
* other event queue supplied as *priority* in rte_event_queue_setup()
* c) If the device has RTE_EVENT_DEV_CAP_EVENT_QOS capability then event
* queue selection from the list is based on event priority supplied as
* *priority* in rte_event_enqueue_burst()
* 2) Selection of event
* a) The number of flows available in selected event queue.
* b) Schedule type method associated with the event
*
* The *nb_events* parameter is the maximum number of event objects to dequeue
* which are returned in the *ev* array of *rte_event* structure.
*
* The rte_event_dequeue_burst() function returns the number of events objects
* it actually dequeued. A return value equal to *nb_events* means that all
* event objects have been dequeued.
*
* The number of events dequeued is the number of scheduler contexts held by
* this port. These contexts are automatically released in the next
* rte_event_dequeue_burst() invocation if the port supports implicit
* releases, or invoking rte_event_enqueue_burst() with RTE_EVENT_OP_RELEASE
* operation can be used to release the contexts early.
*
* Event operations RTE_EVENT_OP_FORWARD and RTE_EVENT_OP_RELEASE must only be
* enqueued to the same port that their associated events were dequeued from.
*
* @param dev_id
* The identifier of the device.
* @param port_id
* The identifier of the event port.
* @param[out] ev
* Points to an array of *nb_events* objects of type *rte_event* structure
* for output to be populated with the dequeued event objects.
* @param nb_events
* The maximum number of event objects to dequeue, typically number of
* rte_event_port_dequeue_depth() available for this port.
*
* @param timeout_ticks
* - 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
* 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
* rte_event_dev_configure()
*
* @return
* The number of event objects actually dequeued from the port. The return
* value can be less than the value of the *nb_events* parameter when the
* event port's queue is not full.
*
* @see rte_event_port_dequeue_depth()
*/
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)
{
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
rte_eventdev_trace_deq_burst(dev_id, port_id, ev, nb_events);
/*
* 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
* event port designated by its *port_id* with associated service priority
* supplied in *priorities* on the event device designated by its *dev_id*.
*
* The link establishment shall enable the event port *port_id* from
* receiving events from the specified event queue(s) supplied in *queues*
*
* An event queue may link to one or more event ports.
* The number of links can be established from an event queue to event port is
* implementation defined.
*
* Event queue(s) to event port link establishment can be changed at runtime
* without re-configuring the device to support scaling and to reduce the
* latency of critical work by establishing the link with more event ports
* at runtime.
*
* @param dev_id
* The identifier of the device.
*
* @param port_id
* Event port identifier to select the destination port to link.
*
* @param queues
* Points to an array of *nb_links* event queues to be linked
* to the event port.
* NULL value is allowed, in which case this function links all the configured
* event queues *nb_event_queues* which previously supplied to
* rte_event_dev_configure() to the event port *port_id*
*
* @param priorities
* Points to an array of *nb_links* service priorities associated with each
* event queue link to event port.
* The priority defines the event port's servicing priority for
* event queue, which may be ignored by an implementation.
* The requested priority should in the range of
* [RTE_EVENT_DEV_PRIORITY_HIGHEST, RTE_EVENT_DEV_PRIORITY_LOWEST].
* The implementation shall normalize the requested priority to
* implementation supported priority value.
* NULL value is allowed, in which case this function links the event queues
* with RTE_EVENT_DEV_PRIORITY_NORMAL servicing priority
*
* @param nb_links
* 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
* the value of the *nb_links* parameter when the implementation has the
* limitation on specific queue to port link establishment or if invalid
* parameters are specified in *queues*
* If the return value is less than *nb_links*, the remaining links at the end
* of link[] are not established, and the caller has to take care of them.
* If return value is less than *nb_links* then implementation shall update the
* rte_errno accordingly, Possible rte_errno values are
* (EDQUOT) Quota exceeded(Application tried to link the queue configured with
* RTE_EVENT_QUEUE_CFG_SINGLE_LINK to more than one event ports)
* (EINVAL) Invalid parameter
*
*/
int
rte_event_port_link(uint8_t dev_id, uint8_t port_id,
const uint8_t queues[], const uint8_t priorities[],
uint16_t nb_links);
/**
* Unlink multiple source event queues supplied in *queues* from the destination
* event port designated by its *port_id* on the event device designated
* by its *dev_id*.
*
* The unlink call issues an async request to disable the event port *port_id*
* from receiving events from the specified event queue *queue_id*.
* Event queue(s) to event port unlink establishment can be changed at runtime
* without re-configuring the device.
*
* @see rte_event_port_unlinks_in_progress() to poll for completed unlinks.
*
* @param dev_id
* The identifier of the device.
*
* @param port_id
* Event port identifier to select the destination port to unlink.
*
* @param queues
* Points to an array of *nb_unlinks* event queues to be unlinked
* from the event port.
* NULL value is allowed, in which case this function unlinks all the
* event queue(s) from the event port *port_id*.
*
* @param nb_unlinks
* The number of unlinks to establish. This parameter is ignored if queues is
* NULL.
*
* @return
* The number of unlinks successfully requested. The return value can be less
* than the value of the *nb_unlinks* parameter when the implementation has the
* limitation on specific queue to port unlink establishment or
* if invalid parameters are specified.
* If the return value is less than *nb_unlinks*, the remaining queues at the
* end of queues[] are not unlinked, and the caller has to take care of them.
* If return value is less than *nb_unlinks* then implementation shall update
* the rte_errno accordingly, Possible rte_errno values are
* (EINVAL) Invalid parameter
*/
int
rte_event_port_unlink(uint8_t dev_id, uint8_t port_id,
uint8_t queues[], uint16_t nb_unlinks);
/**
* Returns the number of unlinks in progress.
*
* This function provides the application with a method to detect when an
* unlink has been completed by the implementation.
*
* @see rte_event_port_unlink() to issue unlink requests.
*
* @param dev_id
* The identifier of the device.
*
* @param port_id
* Event port identifier to select port to check for unlinks in progress.
*
* @return
* The number of unlinks that are in progress. A return of zero indicates that
* there are no outstanding unlink requests. A positive return value indicates
* the number of unlinks that are in progress, but are not yet complete.
* A negative return value indicates an error, -EINVAL indicates an invalid
* parameter passed for *dev_id* or *port_id*.
*/
int
rte_event_port_unlinks_in_progress(uint8_t dev_id, uint8_t port_id);
/**
* Retrieve the list of source event queues and its associated service priority
* linked to the destination event port designated by its *port_id*
* on the event device designated by its *dev_id*.
*
* @param dev_id
* The identifier of the device.
*
* @param port_id
* Event port identifier.
*
* @param[out] queues
* Points to an array of *queues* for output.
* The caller has to allocate *RTE_EVENT_MAX_QUEUES_PER_DEV* bytes to
* store the event queue(s) linked with event port *port_id*
*
* @param[out] priorities
* Points to an array of *priorities* for output.
* The caller has to allocate *RTE_EVENT_MAX_QUEUES_PER_DEV* bytes to
* store the service priority associated with each event queue linked
*
* @return
* The number of links established on the event port designated by its
* *port_id*.
* - <0 on failure.
*
*/
int
rte_event_port_links_get(uint8_t dev_id, uint8_t port_id,
uint8_t queues[], uint8_t priorities[]);
/**
* Retrieve the service ID of the event dev. If the adapter doesn't use
* a rte_service function, this function returns -ESRCH.
*
* @param dev_id
* The identifier of the device.
*
* @param [out] service_id
* A pointer to a uint32_t, to be filled in with the service id.
*
* @return
* - 0: Success
* - <0: Error code on failure, if the event dev doesn't use a rte_service
* function, this function returns -ESRCH.
*/
int
rte_event_dev_service_id_get(uint8_t dev_id, uint32_t *service_id);
/**
* Dump internal information about *dev_id* to the FILE* provided in *f*.
*
* @param dev_id
* The identifier of the device.
*
* @param f
* A pointer to a file for output
*
* @return
* - 0: on success
* - <0: on failure.
*/
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_event_dev_xstats_by_name_get().
* @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_event_dev_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);
/**
* Trigger the eventdev self test.
*
* @param dev_id
* The identifier of the device
* @return
* - 0: Selftest successful
* - -ENOTSUP if the device doesn't support selftest
* - other values < 0 on failure.
*/
int rte_event_dev_selftest(uint8_t dev_id);
/**
* Get the memory required per event vector based on the number of elements per
* vector.
* This should be used to create the mempool that holds the event vectors.
*
* @param name
* The name of the vector pool.
* @param n
* The number of elements in the mbuf pool.
* @param cache_size
* Size of the per-core object cache. See rte_mempool_create() for
* details.
* @param nb_elem
* The number of elements that a single event vector should be able to hold.
* @param socket_id
* The socket identifier where the memory should be allocated. The
* value can be *SOCKET_ID_ANY* if there is no NUMA constraint for the
* reserved zone
*
* @return
* The pointer to the newly allocated mempool, on success. NULL on error
* with rte_errno set appropriately. Possible rte_errno values include:
* - E_RTE_NO_CONFIG - function could not get pointer to rte_config structure
* - E_RTE_SECONDARY - function was called from a secondary process instance
* - EINVAL - cache size provided is too large, or priv_size is not aligned.
* - ENOSPC - the maximum number of memzones has already been allocated
* - EEXIST - a memzone with the same name already exists
* - 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,
int socket_id);
#ifdef __cplusplus
}
#endif
#endif /* _RTE_EVENTDEV_H_ */
Reference in New Issue View Git Blame Copy Permalink