d593a8177f
When an event device is stopped, it drains all event queues and ports. These events may contain pointers, so to prevent memory leaks eventdev now supports a user-provided flush callback that is called during the queue drain process. This callback is stored in process memory, so the callback must be registered by any process that may call rte_event_dev_stop(). This commit also clarifies the behavior of rte_event_dev_stop(). This follows this mailing list discussion: http://dpdk.org/ml/archives/dev/2018-January/087484.html Signed-off-by: Gage Eads <gage.eads@intel.com> Acked-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
680 lines
17 KiB
C
680 lines
17 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2016 Cavium, Inc
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*/
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#ifndef _RTE_EVENTDEV_PMD_H_
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#define _RTE_EVENTDEV_PMD_H_
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/** @file
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* RTE Event PMD APIs
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*
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* @note
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* These API are from event PMD only and user applications should not call
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* them directly.
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <string.h>
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#include <rte_common.h>
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#include <rte_config.h>
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#include <rte_dev.h>
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#include <rte_log.h>
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#include <rte_malloc.h>
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#include "rte_eventdev.h"
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/* Logging Macros */
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#define RTE_EDEV_LOG_ERR(...) \
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RTE_LOG(ERR, EVENTDEV, \
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RTE_FMT("%s() line %u: " RTE_FMT_HEAD(__VA_ARGS__,) "\n", \
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__func__, __LINE__, RTE_FMT_TAIL(__VA_ARGS__,)))
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#ifdef RTE_LIBRTE_EVENTDEV_DEBUG
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#define RTE_EDEV_LOG_DEBUG(...) \
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RTE_LOG(DEBUG, EVENTDEV, \
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RTE_FMT("%s() line %u: " RTE_FMT_HEAD(__VA_ARGS__,) "\n", \
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__func__, __LINE__, RTE_FMT_TAIL(__VA_ARGS__,)))
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#else
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#define RTE_EDEV_LOG_DEBUG(...) (void)0
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#endif
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/* Macros to check for valid device */
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#define RTE_EVENTDEV_VALID_DEVID_OR_ERR_RET(dev_id, retval) do { \
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if (!rte_event_pmd_is_valid_dev((dev_id))) { \
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RTE_EDEV_LOG_ERR("Invalid dev_id=%d\n", dev_id); \
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return retval; \
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} \
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} while (0)
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#define RTE_EVENTDEV_VALID_DEVID_OR_ERRNO_RET(dev_id, errno, retval) do { \
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if (!rte_event_pmd_is_valid_dev((dev_id))) { \
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RTE_EDEV_LOG_ERR("Invalid dev_id=%d\n", dev_id); \
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rte_errno = errno; \
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return retval; \
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} \
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} while (0)
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#define RTE_EVENTDEV_VALID_DEVID_OR_RET(dev_id) do { \
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if (!rte_event_pmd_is_valid_dev((dev_id))) { \
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RTE_EDEV_LOG_ERR("Invalid dev_id=%d\n", dev_id); \
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return; \
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} \
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} while (0)
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#define RTE_EVENT_ETH_RX_ADAPTER_SW_CAP \
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((RTE_EVENT_ETH_RX_ADAPTER_CAP_OVERRIDE_FLOW_ID) | \
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(RTE_EVENT_ETH_RX_ADAPTER_CAP_MULTI_EVENTQ))
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/**< Ethernet Rx adapter cap to return If the packet transfers from
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* the ethdev to eventdev use a SW service function
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*/
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#define RTE_EVENTDEV_DETACHED (0)
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#define RTE_EVENTDEV_ATTACHED (1)
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struct rte_eth_dev;
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/** Global structure used for maintaining state of allocated event devices */
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struct rte_eventdev_global {
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uint8_t nb_devs; /**< Number of devices found */
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};
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extern struct rte_eventdev_global *rte_eventdev_globals;
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/** Pointer to global event devices data structure. */
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extern struct rte_eventdev *rte_eventdevs;
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/** The pool of rte_eventdev structures. */
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/**
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* Get the rte_eventdev structure device pointer for the named device.
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*
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* @param name
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* device name to select the device structure.
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*
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* @return
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* - The rte_eventdev structure pointer for the given device ID.
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*/
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static inline struct rte_eventdev *
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rte_event_pmd_get_named_dev(const char *name)
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{
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struct rte_eventdev *dev;
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unsigned int i;
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if (name == NULL)
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return NULL;
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for (i = 0; i < RTE_EVENT_MAX_DEVS; i++) {
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dev = &rte_eventdevs[i];
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if ((dev->attached == RTE_EVENTDEV_ATTACHED) &&
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(strcmp(dev->data->name, name) == 0))
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return dev;
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}
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return NULL;
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}
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/**
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* Validate if the event device index is valid attached event device.
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*
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* @param dev_id
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* Event device index.
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*
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* @return
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* - If the device index is valid (1) or not (0).
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*/
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static inline unsigned
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rte_event_pmd_is_valid_dev(uint8_t dev_id)
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{
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struct rte_eventdev *dev;
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if (dev_id >= RTE_EVENT_MAX_DEVS)
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return 0;
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dev = &rte_eventdevs[dev_id];
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if (dev->attached != RTE_EVENTDEV_ATTACHED)
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return 0;
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else
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return 1;
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}
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/**
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* Definitions of all functions exported by a driver through the
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* the generic structure of type *event_dev_ops* supplied in the
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* *rte_eventdev* structure associated with a device.
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*/
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/**
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* Get device information of a device.
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*
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* @param dev
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* Event device pointer
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* @param dev_info
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* Event device information structure
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*
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* @return
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* Returns 0 on success
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*/
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typedef void (*eventdev_info_get_t)(struct rte_eventdev *dev,
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struct rte_event_dev_info *dev_info);
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/**
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* Configure a device.
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*
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* @param dev
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* Event device pointer
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*
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* @return
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* Returns 0 on success
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*/
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typedef int (*eventdev_configure_t)(const struct rte_eventdev *dev);
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/**
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* Start a configured device.
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*
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* @param dev
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* Event device pointer
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*
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* @return
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* Returns 0 on success
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*/
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typedef int (*eventdev_start_t)(struct rte_eventdev *dev);
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/**
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* Stop a configured device.
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*
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* @param dev
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* Event device pointer
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*/
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typedef void (*eventdev_stop_t)(struct rte_eventdev *dev);
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/**
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* Close a configured device.
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*
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* @param dev
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* Event device pointer
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*
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* @return
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* - 0 on success
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* - (-EAGAIN) if can't close as device is busy
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*/
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typedef int (*eventdev_close_t)(struct rte_eventdev *dev);
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/**
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* Retrieve the default event queue configuration.
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*
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* @param dev
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* Event device pointer
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* @param queue_id
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* Event queue index
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* @param[out] queue_conf
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* Event queue configuration structure
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*
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*/
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typedef void (*eventdev_queue_default_conf_get_t)(struct rte_eventdev *dev,
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uint8_t queue_id, struct rte_event_queue_conf *queue_conf);
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/**
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* Setup an event queue.
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*
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* @param dev
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* Event device pointer
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* @param queue_id
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* Event queue index
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* @param queue_conf
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* Event queue configuration structure
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*
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* @return
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* Returns 0 on success.
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*/
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typedef int (*eventdev_queue_setup_t)(struct rte_eventdev *dev,
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uint8_t queue_id,
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const struct rte_event_queue_conf *queue_conf);
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/**
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* Release resources allocated by given event queue.
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*
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* @param dev
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* Event device pointer
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* @param queue_id
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* Event queue index
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*
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*/
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typedef void (*eventdev_queue_release_t)(struct rte_eventdev *dev,
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uint8_t queue_id);
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/**
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* Retrieve the default event port configuration.
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*
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* @param dev
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* Event device pointer
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* @param port_id
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* Event port index
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* @param[out] port_conf
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* Event port configuration structure
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*
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*/
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typedef void (*eventdev_port_default_conf_get_t)(struct rte_eventdev *dev,
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uint8_t port_id, struct rte_event_port_conf *port_conf);
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/**
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* Setup an event port.
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*
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* @param dev
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* Event device pointer
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* @param port_id
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* Event port index
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* @param port_conf
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* Event port configuration structure
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*
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* @return
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* Returns 0 on success.
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*/
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typedef int (*eventdev_port_setup_t)(struct rte_eventdev *dev,
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uint8_t port_id,
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const struct rte_event_port_conf *port_conf);
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/**
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* Release memory resources allocated by given event port.
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*
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* @param port
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* Event port pointer
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*
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*/
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typedef void (*eventdev_port_release_t)(void *port);
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/**
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* Link multiple source event queues to destination event port.
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*
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* @param dev
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* Event device pointer
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* @param port
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* Event port pointer
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* @param link
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* Points to an array of *nb_links* event queues to be linked
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* to the event port.
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* @param priorities
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* Points to an array of *nb_links* service priorities associated with each
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* event queue link to event port.
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* @param nb_links
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* The number of links to establish
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*
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* @return
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* Returns 0 on success.
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*
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*/
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typedef int (*eventdev_port_link_t)(struct rte_eventdev *dev, void *port,
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const uint8_t queues[], const uint8_t priorities[],
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uint16_t nb_links);
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/**
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* Unlink multiple source event queues from destination event port.
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*
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* @param dev
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* Event device pointer
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* @param port
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* Event port pointer
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* @param queues
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* An array of *nb_unlinks* event queues to be unlinked from the event port.
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* @param nb_unlinks
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* The number of unlinks to establish
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*
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* @return
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* Returns 0 on success.
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*
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*/
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typedef int (*eventdev_port_unlink_t)(struct rte_eventdev *dev, void *port,
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uint8_t queues[], uint16_t nb_unlinks);
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/**
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* Converts nanoseconds to *timeout_ticks* value for rte_event_dequeue()
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*
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* @param dev
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* Event device pointer
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* @param ns
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* Wait time in nanosecond
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* @param[out] timeout_ticks
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* Value for the *timeout_ticks* parameter in rte_event_dequeue() function
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*
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* @return
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* Returns 0 on success.
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*
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*/
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typedef int (*eventdev_dequeue_timeout_ticks_t)(struct rte_eventdev *dev,
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uint64_t ns, uint64_t *timeout_ticks);
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/**
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* Dump internal information
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*
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* @param dev
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* Event device pointer
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* @param f
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* A pointer to a file for output
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*
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*/
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typedef void (*eventdev_dump_t)(struct rte_eventdev *dev, FILE *f);
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/**
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* Retrieve a set of statistics from device
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*
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* @param dev
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* Event device pointer
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* @param ids
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* The stat ids to retrieve
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* @param values
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* The returned stat values
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* @param n
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* The number of id values and entries in the values array
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* @return
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* The number of stat values successfully filled into the values array
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*/
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typedef int (*eventdev_xstats_get_t)(const struct rte_eventdev *dev,
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enum rte_event_dev_xstats_mode mode, uint8_t queue_port_id,
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const unsigned int ids[], uint64_t values[], unsigned int n);
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/**
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* Resets the statistic values in xstats for the device, based on mode.
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*/
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typedef int (*eventdev_xstats_reset_t)(struct rte_eventdev *dev,
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enum rte_event_dev_xstats_mode mode,
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int16_t queue_port_id,
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const uint32_t ids[],
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uint32_t nb_ids);
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/**
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* Get names of extended stats of an event device
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*
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* @param dev
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* Event device pointer
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* @param xstats_names
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* Array of name values to be filled in
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* @param size
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* Number of values in the xstats_names array
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* @return
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* When size >= the number of stats, return the number of stat values filled
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* into the array.
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* When size < the number of available stats, return the number of stats
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* values, and do not fill in any data into xstats_names.
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*/
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typedef int (*eventdev_xstats_get_names_t)(const struct rte_eventdev *dev,
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enum rte_event_dev_xstats_mode mode, uint8_t queue_port_id,
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struct rte_event_dev_xstats_name *xstats_names,
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unsigned int *ids, unsigned int size);
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/**
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* Get value of one stats and optionally return its id
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*
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* @param dev
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* Event device pointer
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* @param name
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* The name of the stat to retrieve
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* @param id
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* Pointer to an unsigned int where we store the stat-id for future reference.
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* This pointer may be null if the id is not required.
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* @return
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* The value of the stat, or (uint64_t)-1 if the stat is not found.
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* If the stat is not found, the id value will be returned as (unsigned)-1,
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* if id pointer is non-NULL
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*/
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typedef uint64_t (*eventdev_xstats_get_by_name)(const struct rte_eventdev *dev,
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const char *name, unsigned int *id);
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/**
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* Retrieve the event device's ethdev Rx adapter capabilities for the
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* specified ethernet port
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*
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* @param dev
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* Event device pointer
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*
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* @param eth_dev
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* Ethernet device pointer
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*
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* @param[out] caps
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* A pointer to memory filled with Rx event adapter capabilities.
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*
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* @return
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* - 0: Success, driver provides Rx event adapter capabilities for the
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* ethernet device.
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* - <0: Error code returned by the driver function.
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*
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*/
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typedef int (*eventdev_eth_rx_adapter_caps_get_t)
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(const struct rte_eventdev *dev,
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const struct rte_eth_dev *eth_dev,
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uint32_t *caps);
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struct rte_event_eth_rx_adapter_queue_conf *queue_conf;
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/**
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* Add ethernet Rx queues to event device. This callback is invoked if
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* the caps returned from rte_eventdev_eth_rx_adapter_caps_get(, eth_port_id)
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* has RTE_EVENT_ETH_RX_ADAPTER_CAP_INTERNAL_PORT set.
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*
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* @param dev
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* Event device pointer
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*
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* @param eth_dev
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* Ethernet device pointer
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*
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* @param rx_queue_id
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* Ethernet device receive queue index
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*
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* @param queue_conf
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* Additional configuration structure
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* @return
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* - 0: Success, ethernet receive queue added successfully.
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* - <0: Error code returned by the driver function.
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*
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*/
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typedef int (*eventdev_eth_rx_adapter_queue_add_t)(
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const struct rte_eventdev *dev,
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const struct rte_eth_dev *eth_dev,
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int32_t rx_queue_id,
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const struct rte_event_eth_rx_adapter_queue_conf *queue_conf);
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/**
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* Delete ethernet Rx queues from event device. This callback is invoked if
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* the caps returned from eventdev_eth_rx_adapter_caps_get(, eth_port_id)
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* has RTE_EVENT_ETH_RX_ADAPTER_CAP_INTERNAL_PORT set.
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*
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* @param dev
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* Event device pointer
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*
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* @param eth_dev
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* Ethernet device pointer
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*
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* @param rx_queue_id
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* Ethernet device receive queue index
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*
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* @return
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* - 0: Success, ethernet receive queue deleted successfully.
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* - <0: Error code returned by the driver function.
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*
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*/
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typedef int (*eventdev_eth_rx_adapter_queue_del_t)
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(const struct rte_eventdev *dev,
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const struct rte_eth_dev *eth_dev,
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int32_t rx_queue_id);
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/**
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* Start ethernet Rx adapter. This callback is invoked if
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* the caps returned from eventdev_eth_rx_adapter_caps_get(.., eth_port_id)
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* has RTE_EVENT_ETH_RX_ADAPTER_CAP_INTERNAL_PORT set and Rx queues
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* from eth_port_id have been added to the event device.
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*
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* @param dev
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* Event device pointer
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*
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* @param eth_dev
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* Ethernet device pointer
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*
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* @return
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* - 0: Success, ethernet Rx adapter started successfully.
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* - <0: Error code returned by the driver function.
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*/
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typedef int (*eventdev_eth_rx_adapter_start_t)
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(const struct rte_eventdev *dev,
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const struct rte_eth_dev *eth_dev);
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/**
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* Stop ethernet Rx adapter. This callback is invoked if
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* the caps returned from eventdev_eth_rx_adapter_caps_get(..,eth_port_id)
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* has RTE_EVENT_ETH_RX_ADAPTER_CAP_INTERNAL_PORT set and Rx queues
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* from eth_port_id have been added to the event device.
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*
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* @param dev
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* Event device pointer
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*
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* @param eth_dev
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* Ethernet device pointer
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*
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* @return
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* - 0: Success, ethernet Rx adapter stopped successfully.
|
|
* - <0: Error code returned by the driver function.
|
|
*/
|
|
typedef int (*eventdev_eth_rx_adapter_stop_t)
|
|
(const struct rte_eventdev *dev,
|
|
const struct rte_eth_dev *eth_dev);
|
|
|
|
struct rte_event_eth_rx_adapter_stats *stats;
|
|
|
|
/**
|
|
* Retrieve ethernet Rx adapter statistics.
|
|
*
|
|
* @param dev
|
|
* Event device pointer
|
|
*
|
|
* @param eth_dev
|
|
* Ethernet device pointer
|
|
*
|
|
* @param[out] stats
|
|
* Pointer to stats structure
|
|
*
|
|
* @return
|
|
* Return 0 on success.
|
|
*/
|
|
|
|
typedef int (*eventdev_eth_rx_adapter_stats_get)
|
|
(const struct rte_eventdev *dev,
|
|
const struct rte_eth_dev *eth_dev,
|
|
struct rte_event_eth_rx_adapter_stats *stats);
|
|
/**
|
|
* Reset ethernet Rx adapter statistics.
|
|
*
|
|
* @param dev
|
|
* Event device pointer
|
|
*
|
|
* @param eth_dev
|
|
* Ethernet device pointer
|
|
*
|
|
* @return
|
|
* Return 0 on success.
|
|
*/
|
|
typedef int (*eventdev_eth_rx_adapter_stats_reset)
|
|
(const struct rte_eventdev *dev,
|
|
const struct rte_eth_dev *eth_dev);
|
|
/**
|
|
* Start eventdev selftest.
|
|
*
|
|
* @return
|
|
* Return 0 on success.
|
|
*/
|
|
typedef int (*eventdev_selftest)(void);
|
|
|
|
/** Event device operations function pointer table */
|
|
struct rte_eventdev_ops {
|
|
eventdev_info_get_t dev_infos_get; /**< Get device info. */
|
|
eventdev_configure_t dev_configure; /**< Configure device. */
|
|
eventdev_start_t dev_start; /**< Start device. */
|
|
eventdev_stop_t dev_stop; /**< Stop device. */
|
|
eventdev_close_t dev_close; /**< Close device. */
|
|
|
|
eventdev_queue_default_conf_get_t queue_def_conf;
|
|
/**< Get default queue configuration. */
|
|
eventdev_queue_setup_t queue_setup;
|
|
/**< Set up an event queue. */
|
|
eventdev_queue_release_t queue_release;
|
|
/**< Release an event queue. */
|
|
|
|
eventdev_port_default_conf_get_t port_def_conf;
|
|
/**< Get default port configuration. */
|
|
eventdev_port_setup_t port_setup;
|
|
/**< Set up an event port. */
|
|
eventdev_port_release_t port_release;
|
|
/**< Release an event port. */
|
|
|
|
eventdev_port_link_t port_link;
|
|
/**< Link event queues to an event port. */
|
|
eventdev_port_unlink_t port_unlink;
|
|
/**< Unlink event queues from an event port. */
|
|
eventdev_dequeue_timeout_ticks_t timeout_ticks;
|
|
/**< Converts ns to *timeout_ticks* value for rte_event_dequeue() */
|
|
eventdev_dump_t dump;
|
|
/* Dump internal information */
|
|
|
|
eventdev_xstats_get_t xstats_get;
|
|
/**< Get extended device statistics. */
|
|
eventdev_xstats_get_names_t xstats_get_names;
|
|
/**< Get names of extended stats. */
|
|
eventdev_xstats_get_by_name xstats_get_by_name;
|
|
/**< Get one value by name. */
|
|
eventdev_xstats_reset_t xstats_reset;
|
|
/**< Reset the statistics values in xstats. */
|
|
|
|
eventdev_eth_rx_adapter_caps_get_t eth_rx_adapter_caps_get;
|
|
/**< Get ethernet Rx adapter capabilities */
|
|
eventdev_eth_rx_adapter_queue_add_t eth_rx_adapter_queue_add;
|
|
/**< Add Rx queues to ethernet Rx adapter */
|
|
eventdev_eth_rx_adapter_queue_del_t eth_rx_adapter_queue_del;
|
|
/**< Delete Rx queues from ethernet Rx adapter */
|
|
eventdev_eth_rx_adapter_start_t eth_rx_adapter_start;
|
|
/**< Start ethernet Rx adapter */
|
|
eventdev_eth_rx_adapter_stop_t eth_rx_adapter_stop;
|
|
/**< Stop ethernet Rx adapter */
|
|
eventdev_eth_rx_adapter_stats_get eth_rx_adapter_stats_get;
|
|
/**< Get ethernet Rx stats */
|
|
eventdev_eth_rx_adapter_stats_reset eth_rx_adapter_stats_reset;
|
|
/**< Reset ethernet Rx stats */
|
|
|
|
eventdev_selftest dev_selftest;
|
|
/**< Start eventdev Selftest */
|
|
|
|
eventdev_stop_flush_t dev_stop_flush;
|
|
/**< User-provided event flush function */
|
|
};
|
|
|
|
/**
|
|
* Allocates a new eventdev slot for an event device and returns the pointer
|
|
* to that slot for the driver to use.
|
|
*
|
|
* @param name
|
|
* Unique identifier name for each device
|
|
* @param socket_id
|
|
* Socket to allocate resources on.
|
|
* @return
|
|
* - Slot in the rte_dev_devices array for a new device;
|
|
*/
|
|
struct rte_eventdev *
|
|
rte_event_pmd_allocate(const char *name, int socket_id);
|
|
|
|
/**
|
|
* Release the specified eventdev device.
|
|
*
|
|
* @param eventdev
|
|
* The *eventdev* pointer is the address of the *rte_eventdev* structure.
|
|
* @return
|
|
* - 0 on success, negative on error
|
|
*/
|
|
int
|
|
rte_event_pmd_release(struct rte_eventdev *eventdev);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _RTE_EVENTDEV_PMD_H_ */
|