Provided by: dpdk-doc_24.11.2-2_all bug

NAME

       rte_event_eth_rx_adapter.h

SYNOPSIS

       #include <stdint.h>
       #include <rte_compat.h>
       #include <rte_service.h>
       #include 'rte_eventdev.h'

   Data Structures
       struct rte_event_eth_rx_adapter_conf
       struct rte_event_eth_rx_adapter_queue_conf
       struct rte_event_eth_rx_adapter_queue_stats
       struct rte_event_eth_rx_adapter_stats
       struct rte_event_eth_rx_adapter_vector_limits
       struct rte_event_eth_rx_adapter_params
       struct rte_event_eth_rx_adapter_runtime_params

   Macros
       #define RTE_EVENT_ETH_RX_ADAPTER_QUEUE_FLOW_ID_VALID   0x1
       #define RTE_EVENT_ETH_RX_ADAPTER_QUEUE_EVENT_VECTOR   0x2

   Typedefs
       typedef int(* rte_event_eth_rx_adapter_conf_cb) (uint8_t id, uint8_t dev_id, struct
           rte_event_eth_rx_adapter_conf *conf, void *arg)
       typedef uint16_t(* rte_event_eth_rx_adapter_cb_fn) (uint16_t eth_dev_id, uint16_t queue_id, uint32_t
           enqueue_buf_size, uint32_t enqueue_buf_count, struct rte_event *ev, uint16_t nb_event, void *cb_arg,
           uint16_t *nb_dropped)

   Functions
       int rte_event_eth_rx_adapter_create_ext (uint8_t id, uint8_t dev_id, rte_event_eth_rx_adapter_conf_cb
           conf_cb, void *conf_arg)
       int rte_event_eth_rx_adapter_create (uint8_t id, uint8_t dev_id, struct rte_event_port_conf *port_config)
       int rte_event_eth_rx_adapter_create_with_params (uint8_t id, uint8_t dev_id, struct rte_event_port_conf
           *port_config, struct rte_event_eth_rx_adapter_params *rxa_params)
       __rte_experimental int rte_event_eth_rx_adapter_create_ext_with_params (uint8_t id, uint8_t dev_id,
           rte_event_eth_rx_adapter_conf_cb conf_cb, void *conf_arg, struct rte_event_eth_rx_adapter_params
           *rxa_params)
       int rte_event_eth_rx_adapter_free (uint8_t id)
       int rte_event_eth_rx_adapter_queue_add (uint8_t id, uint16_t eth_dev_id, int32_t rx_queue_id, const
           struct rte_event_eth_rx_adapter_queue_conf *conf)
       int rte_event_eth_rx_adapter_queue_del (uint8_t id, uint16_t eth_dev_id, int32_t rx_queue_id)
       int rte_event_eth_rx_adapter_start (uint8_t id)
       int rte_event_eth_rx_adapter_stop (uint8_t id)
       int rte_event_eth_rx_adapter_stats_get (uint8_t id, struct rte_event_eth_rx_adapter_stats *stats)
       int rte_event_eth_rx_adapter_stats_reset (uint8_t id)
       int rte_event_eth_rx_adapter_service_id_get (uint8_t id, uint32_t *service_id)
       int rte_event_eth_rx_adapter_cb_register (uint8_t id, uint16_t eth_dev_id, rte_event_eth_rx_adapter_cb_fn
           cb_fn, void *cb_arg)
       int rte_event_eth_rx_adapter_vector_limits_get (uint8_t dev_id, uint16_t eth_port_id, struct
           rte_event_eth_rx_adapter_vector_limits *limits)
       int rte_event_eth_rx_adapter_queue_conf_get (uint8_t id, uint16_t eth_dev_id, uint16_t rx_queue_id,
           struct rte_event_eth_rx_adapter_queue_conf *queue_conf)
       int rte_event_eth_rx_adapter_queue_stats_get (uint8_t id, uint16_t eth_dev_id, uint16_t rx_queue_id,
           struct rte_event_eth_rx_adapter_queue_stats *stats)
       int rte_event_eth_rx_adapter_queue_stats_reset (uint8_t id, uint16_t eth_dev_id, uint16_t rx_queue_id)
       int rte_event_eth_rx_adapter_event_port_get (uint8_t id, uint8_t *event_port_id)
       int rte_event_eth_rx_adapter_instance_get (uint16_t eth_dev_id, uint16_t rx_queue_id, uint8_t
           *rxa_inst_id)
       __rte_experimental int rte_event_eth_rx_adapter_runtime_params_init (struct
           rte_event_eth_rx_adapter_runtime_params *params)
       __rte_experimental int rte_event_eth_rx_adapter_runtime_params_set (uint8_t id, struct
           rte_event_eth_rx_adapter_runtime_params *params)
       __rte_experimental int rte_event_eth_rx_adapter_runtime_params_get (uint8_t id, struct
           rte_event_eth_rx_adapter_runtime_params *params)

Detailed Description

       RTE Event Ethernet Rx Adapter

       An eventdev-based packet processing application enqueues/dequeues mbufs to/from the event device. Packet
       flow from the ethernet device to the event device can be accomplished using either HW or SW mechanisms
       depending on the platform and the particular combination of ethernet and event devices. The event
       ethernet Rx adapter provides common APIs to configure the packet flow from the ethernet devices to event
       devices across both these transfer mechanisms.

       The adapter uses a EAL service core function for SW based packet transfer and uses the eventdev PMD
       functions to configure HW based packet transfer between the ethernet device and the event device.

       The ethernet Rx event adapter's functions are:

       • rte_event_eth_rx_adapter_create_ext()rte_event_eth_rx_adapter_create()rte_event_eth_rx_adapter_create_with_params()rte_event_eth_rx_adapter_create_ext_with_params()rte_event_eth_rx_adapter_free()rte_event_eth_rx_adapter_queue_add()rte_event_eth_rx_adapter_queue_del()rte_event_eth_rx_adapter_start()rte_event_eth_rx_adapter_stop()rte_event_eth_rx_adapter_stats_get()rte_event_eth_rx_adapter_stats_reset()rte_event_eth_rx_adapter_queue_conf_get()rte_event_eth_rx_adapter_queue_stats_get()rte_event_eth_rx_adapter_queue_stats_reset()rte_event_eth_rx_adapter_event_port_get()rte_event_eth_rx_adapter_instance_get()rte_event_eth_rx_adapter_runtime_params_get()rte_event_eth_rx_adapter_runtime_params_init()rte_event_eth_rx_adapter_runtime_params_set()

       The  application  creates  an  ethernet  to  event adapter using rte_event_eth_rx_adapter_create_ext() or
       rte_event_eth_rx_adapter_create()       or        rte_event_eth_rx_adapter_create_with_params()        or
       rte_event_eth_rx_adapter_create_ext_with_params() functions.

       The  adapter  needs to know which ethernet rx queues to poll for mbufs as well as event device parameters
       such as the event queue identifier, event priority and scheduling type that the adapter should  use  when
       constructing  events. The rte_event_eth_rx_adapter_queue_add() function is provided for this purpose. The
       servicing weight parameter in the rte_event_eth_rx_adapter_queue_conf is applicable when the  Rx  adapter
       uses  a  service core function and is intended to provide application control of the frequency of polling
       ethernet device receive queues, for example, the application may want to poll higher priority queues with
       a higher frequency but at the same time not starve lower priority queues completely. If this parameter is
       zero and the receive interrupt is enabled when configuring the device, the  receive  queue  is  interrupt
       driven; else, the queue is assigned a servicing weight of one.

       The   application   can  start/stop  the  adapter  using  the  rte_event_eth_rx_adapter_start()  and  the
       rte_event_eth_rx_adapter_stop()  functions.  If  the  adapter  uses  a  rte_service  function,  then  the
       application  is also required to assign a core to the service function and control the service core using
       the rte_service APIs. The rte_event_eth_rx_adapter_service_id_get() function can be used to retrieve  the
       service function ID of the adapter in this case.

       For  SW  based  packet transfers, i.e., when the RTE_EVENT_ETH_RX_ADAPTER_CAP_INTERNAL_PORT is not set in
       the adapter's capabilities flags for a particular  ethernet  device,  the  service  function  temporarily
       enqueues  events to an event buffer before batch enqueuing these to the event device. If the buffer fills
       up, the service function stops dequeuing packets from the ethernet device. The application  may  want  to
       monitor  the  buffer  fill  level  and  instruct  the  service function to selectively buffer events. The
       application may also use some other criteria to decide which packets should enter the event  device  even
       when  the  event  buffer  fill level is low or may want to enqueue packets to an internal event port. The
       rte_event_eth_rx_adapter_cb_register() function allows  the  application  to  register  a  callback  that
       selects which packets are enqueued to the event device by the SW adapter. The callback interface is event
       based so the callback can also modify the event data if it needs to.

       Definition in file rte_event_eth_rx_adapter.h.

Macro Definition Documentation

   #define RTE_EVENT_ETH_RX_ADAPTER_QUEUE_FLOW_ID_VALID   0x1
       This flag indicates the flow identifier is valid

       See also
           rte_event_eth_rx_adapter_queue_conf::rx_queue_flags

       Definition at line 107 of file rte_event_eth_rx_adapter.h.

   #define RTE_EVENT_ETH_RX_ADAPTER_QUEUE_EVENT_VECTOR   0x2
       This flag indicates that mbufs arriving on the queue need to be vectorized

       See also
           rte_event_eth_rx_adapter_queue_conf::rx_queue_flags

       Definition at line 111 of file rte_event_eth_rx_adapter.h.

Typedef Documentation

   typedef     int(*     rte_event_eth_rx_adapter_conf_cb)     (uint8_t     id,     uint8_t    dev_id,    struct
       rte_event_eth_rx_adapter_conf *conf, void *arg)
       Function type used for adapter configuration callback. The callback is used to fill  in  members  of  the
       struct  rte_event_eth_rx_adapter_conf,  this  callback  is  invoked when creating a SW service for packet
       transfer  from  ethdev  queues  to  the  event  device.  The   SW   service   is   created   within   the
       rte_event_eth_rx_adapter_queue_add()  function  if  SW  based  packet transfers from ethdev queues to the
       event device are required.

       Parameters
           id Adapter identifier.
           dev_id Event device identifier.
           conf Structure that needs to be populated by this callback.
           arg  Argument  to  the   callback.   This   is   the   same   as   the   conf_arg   passed   to   the
           rte_event_eth_rx_adapter_create_ext().

       Definition at line 151 of file rte_event_eth_rx_adapter.h.

   typedef   uint16_t(*   rte_event_eth_rx_adapter_cb_fn)  (uint16_t  eth_dev_id,  uint16_t  queue_id,  uint32_t
       enqueue_buf_size, uint32_t enqueue_buf_count, struct rte_event  *ev,  uint16_t  nb_event,  void  *cb_arg,
       uint16_t *nb_dropped)
       Callback function invoked by the SW adapter before it continues to process events. The callback is passed
       the  size  of  the enqueue buffer in the SW adapter and the occupancy of the buffer. The callback can use
       these values to decide which events are enqueued to the event device by the SW adapter. The callback  may
       also  enqueue  events internally using its own event port. The SW adapter populates the event information
       based on the Rx queue configuration in the adapter. The callback can modify the  this  event  information
       for the events to be enqueued by the SW adapter.

       The  callback  return  value is the number of events from the beginning of the event array that are to be
       enqueued by the SW adapter. It is the callback's responsibility to arrange these events at the  beginning
       of  the  array,  if  these events are not contiguous in the original array. The nb_dropped parameter is a
       pointer to the number of events dropped by the callback, this number is used by the adapter  to  indicate
       the number of dropped packets as part of its statistics.

       Parameters
           eth_dev_id Port identifier of the Ethernet device.
           queue_id Receive queue index.
           enqueue_buf_size Total enqueue buffer size.
           enqueue_buf_count Event count in enqueue buffer.
           ev Event array.
           nb_event Event array length.
           cb_arg Callback argument.
           nb_dropped Packets dropped by callback.

       Returns

           • The number of events to be enqueued by the SW adapter.

       Definition at line 373 of file rte_event_eth_rx_adapter.h.

Function Documentation

   int   rte_event_eth_rx_adapter_create_ext   (uint8_t  id,  uint8_t  dev_id,  rte_event_eth_rx_adapter_conf_cb
       conf_cb, void * conf_arg)
       Create a new ethernet Rx event adapter with the specified identifier.

       Parameters
           id The identifier of the ethernet Rx event adapter.
           dev_id The identifier of the device to configure.
           conf_cb Callback function that fills in members  of  a  struct  rte_event_eth_rx_adapter_conf  struct
           passed into it.
           conf_arg Argument that is passed to the conf_cb function.

       Returns

           • 0: Success

           • <0: Error code on failure

   int rte_event_eth_rx_adapter_create (uint8_t id, uint8_t dev_id, struct rte_event_port_conf * port_config)
       Create  a  new  ethernet  Rx  event adapter with the specified identifier. This function uses an internal
       configuration function that creates an event port. This default function reconfigures  the  event  device
       with  an  additional event port and setup the event port using the port_config parameter passed into this
       function. In case the application needs more control in configuration of the service, it should  use  the
       rte_event_eth_rx_adapter_create_ext() version.

       When   this   API   is  used  for  creating  adapter  instance,  rte_event_dev_config::nb_event_ports  is
       automatically incremented, and event device is reconfigured with additional  event  port  during  service
       initialization.      This      event     device     reconfigure     logic     also     increments     the
       rte_event_dev_config::nb_single_link_event_port_queues parameter if the adapter event port config  is  of
       type RTE_EVENT_PORT_CFG_SINGLE_LINK.

       Application    no    longer    needs    to    account    for   rte_event_dev_config::nb_event_ports   and
       rte_event_dev_config::nb_single_link_event_port_queues parameters required for  eth  Rx  adapter  in  the
       event device configuration when the adapter is created with this API.

       Parameters
           id The identifier of the ethernet Rx event adapter.
           dev_id The identifier of the device to configure.
           port_config Argument of type rte_event_port_conf that is passed to the conf_cb function.

       Returns

           • 0: Success

           • <0: Error code on failure

   int  rte_event_eth_rx_adapter_create_with_params  (uint8_t  id,  uint8_t dev_id, struct rte_event_port_conf *
       port_config, struct rte_event_eth_rx_adapter_params * rxa_params)
       This is a variant of rte_event_eth_rx_adapter_create() with additional adapter params specified in struct
       rte_event_eth_rx_adapter_params.

       Parameters
           id The identifier of the ethernet Rx event adapter.
           dev_id The identifier of the event device to configure.
           port_config Argument of type rte_event_port_conf that is passed to the conf_cb function.
           rxa_params Pointer to struct rte_event_eth_rx_adapter_params. In case of  NULL,  default  values  are
           used.

       Returns

           • 0: Success

           • <0: Error code on failure

   __rte_experimental   int   rte_event_eth_rx_adapter_create_ext_with_params   (uint8_t   id,  uint8_t  dev_id,
       rte_event_eth_rx_adapter_conf_cb conf_cb,  void  *  conf_arg,  struct  rte_event_eth_rx_adapter_params  *
       rxa_params)
       This  is  a  variant of rte_event_eth_rx_adapter_create_ext() with additional adapter params specified in
       struct rte_event_eth_rx_adapter_params.

       Parameters
           id The identifier of the ethernet Rx event adapter.
           dev_id The identifier of the event device to configure.
           conf_cb Callback function that fills in members  of  a  struct  rte_event_eth_rx_adapter_conf  struct
           passed into it.
           conf_arg Argument that is passed to the conf_cb function.
           rxa_params  Pointer  to  struct  rte_event_eth_rx_adapter_params. In case of NULL, default values are
           used.

       Returns

           • 0: Success

           • <0: Error code on failure

   int rte_event_eth_rx_adapter_free (uint8_t id)
       Free an event adapter

       Parameters
           id Adapter identifier.

       Returns

           • 0: Success

           • <0: Error code on failure, If the adapter still has Rx queues added to  it,  the  function  returns
             -EBUSY.

   int  rte_event_eth_rx_adapter_queue_add  (uint8_t  id, uint16_t eth_dev_id, int32_t rx_queue_id, const struct
       rte_event_eth_rx_adapter_queue_conf * conf)
       Add receive queue to an event adapter. After a queue has been added to the event adapter, the  result  of
       the application calling rte_eth_rx_burst(eth_dev_id, rx_queue_id, ..) is undefined.

       Parameters
           id Adapter identifier.
           eth_dev_id Port identifier of Ethernet device.
           rx_queue_id  Ethernet device receive queue index. If rx_queue_id is -1, then all Rx queues configured
           for the device are added. If the ethdev Rx queues can only be connected to a single event queue  then
           rx_queue_id is required to be -1.

       See also
           RTE_EVENT_ETH_RX_ADAPTER_CAP_MULTI_EVENTQ

       Parameters
           conf Additional configuration structure of type rte_event_eth_rx_adapter_queue_conf

       Returns

           • 0: Success, Receive queue added correctly.

           • <0: Error code on failure.

           • (-EIO)  device reconfiguration and restart error. The adapter reconfigures the event device with an
             additional port if it is required to use a service function for packet transfer from  the  ethernet
             device  to  the  event  device.  If  the  device had been started before this call, this error code
             indicates an error in restart following an error in reconfiguration, i.e., a combination of the two
             error codes.

   int rte_event_eth_rx_adapter_queue_del (uint8_t id, uint16_t eth_dev_id, int32_t rx_queue_id)
       Delete receive queue from an event adapter.

       Parameters
           id Adapter identifier.
           eth_dev_id Port identifier of Ethernet device.
           rx_queue_id Ethernet device receive queue index. If rx_queue_id is -1, then all Rx queues  configured
           for  the  device  are  deleted. If the ethdev Rx queues can only be connected to a single event queue
           then rx_queue_id is required to be -1.

       See also
           RTE_EVENT_ETH_RX_ADAPTER_CAP_MULTI_EVENTQ

       Returns

           • 0: Success, Receive queue deleted correctly.

           • <0: Error code on failure.

   int rte_event_eth_rx_adapter_start (uint8_t id)
       Start ethernet Rx event adapter

       Parameters
           id Adapter identifier.

       Returns

           • 0: Success, Adapter started correctly.

           • <0: Error code on failure.

       Note
           The eventdev to which the event_eth_rx_adapter is  connected  needs  to  be  started  before  calling
           rte_event_eth_rx_adapter_start().

   int rte_event_eth_rx_adapter_stop (uint8_t id)
       Stop ethernet Rx event adapter

       Parameters
           id Adapter identifier.

       Returns

           • 0: Success, Adapter started correctly.

           • <0: Error code on failure.

   int rte_event_eth_rx_adapter_stats_get (uint8_t id, struct rte_event_eth_rx_adapter_stats * stats)
       Retrieve statistics for an adapter

       Parameters
           id Adapter identifier.
           stats A pointer to structure used to retrieve statistics for an adapter.

       Returns

           • 0: Success, retrieved successfully.

           • <0: Error code on failure.

   int rte_event_eth_rx_adapter_stats_reset (uint8_t id)
       Reset statistics for an adapter.

       Parameters
           id Adapter identifier.

       Returns

           • 0: Success, statistics reset successfully.

           • <0: Error code on failure.

   int rte_event_eth_rx_adapter_service_id_get (uint8_t id, uint32_t * service_id)
       Retrieve  the  service ID of an adapter. If the adapter doesn't use a rte_service function, this function
       returns -ESRCH.

       Parameters
           id Adapter identifier.
           service_id A pointer to a uint32_t, to be filled in with the service id.

       Returns

           • 0: Success

           • <0: Error code on failure, if the adapter doesn't use a rte_service function, this function returns
             -ESRCH.

   int rte_event_eth_rx_adapter_cb_register (uint8_t  id,  uint16_t  eth_dev_id,  rte_event_eth_rx_adapter_cb_fn
       cb_fn, void * cb_arg)
       Register callback to process Rx packets, this is supported for SW based packet transfers.

       See also
           rte_event_eth_rx_cb_fn

       Parameters
           id Adapter identifier.
           eth_dev_id Port identifier of Ethernet device.
           cb_fn Callback function.
           cb_arg Callback arg.

       Returns

           • 0: Success

           • <0: Error code on failure.

   int    rte_event_eth_rx_adapter_vector_limits_get    (uint8_t    dev_id,    uint16_t    eth_port_id,   struct
       rte_event_eth_rx_adapter_vector_limits * limits)
       Retrieve vector limits for a given event dev and eth dev pair.

       See also
           rte_event_eth_rx_adapter_vector_limits

       Parameters
           dev_id Event device identifier.
           eth_port_id Port identifier of the ethernet device.
           limits A pointer to rte_event_eth_rx_adapter_vector_limits structure that has to be filled.

       Returns

           • 0: Success.

           • <0: Error code on failure.

   int rte_event_eth_rx_adapter_queue_conf_get (uint8_t id, uint16_t eth_dev_id,  uint16_t  rx_queue_id,  struct
       rte_event_eth_rx_adapter_queue_conf * queue_conf)
       Retrieve Rx queue config information.

       Parameters
           id Adapter identifier.
           eth_dev_id Port identifier of Ethernet device.
           rx_queue_id Ethernet device receive queue index.
           queue_conf Pointer to struct rte_event_eth_rx_adapter_queue_conf

       Returns

           • 0: Success, Receive queue added correctly.

           • <0: Error code on failure.

   int  rte_event_eth_rx_adapter_queue_stats_get  (uint8_t id, uint16_t eth_dev_id, uint16_t rx_queue_id, struct
       rte_event_eth_rx_adapter_queue_stats * stats)
       Retrieve Rx queue statistics.

       Parameters
           id Adapter identifier.
           eth_dev_id Port identifier of Ethernet device.
           rx_queue_id Ethernet device receive queue index.
           stats Pointer to struct rte_event_eth_rx_adapter_queue_stats

       Returns

           • 0: Success, queue buffer stats retrieved.

           • <0: Error code on failure.

   int rte_event_eth_rx_adapter_queue_stats_reset (uint8_t id, uint16_t eth_dev_id, uint16_t rx_queue_id)
       Reset Rx queue statistics.

       Parameters
           id Adapter identifier.
           eth_dev_id Port identifier of Ethernet device.
           rx_queue_id Ethernet device receive queue index.

       Returns

           • 0: Success, queue buffer stats retrieved.

           • <0: Error code on failure.

   int rte_event_eth_rx_adapter_event_port_get (uint8_t id, uint8_t * event_port_id)
       Retrieve the event port ID of an adapter. If  the  adapter  doesn't  use  a  rte_service  function,  this
       function returns -ESRCH.

       Parameters
           id Adapter identifier.
           event_port_id A pointer to a uint8_t, to be filled in with the port id.

       Returns

           • 0: Success

           • <0: Error code on failure, if the adapter doesn't use a rte_service function, this function returns
             -ESRCH.

   int rte_event_eth_rx_adapter_instance_get (uint16_t eth_dev_id, uint16_t rx_queue_id, uint8_t * rxa_inst_id)
       Get RX adapter instance ID for a RX queue

       Parameters
           eth_dev_id Port identifier of Ethernet device.
           rx_queue_id Ethernet device receive queue index.
           rxa_inst_id  Pointer  to  store RX adapter instance identifier. Contains valid Rx adapter instance id
           when return value is 0

       Returns

           • 0: Success

           • <0: Error code on failure

   __rte_experimental            int            rte_event_eth_rx_adapter_runtime_params_init             (struct
       rte_event_eth_rx_adapter_runtime_params * params)
       Initialize the adapter runtime configuration parameters with default values

       Parameters
           params A pointer to structure of type struct rte_event_eth_rx_adapter_runtime_params

       Returns

           • 0: Success

           • <0: Error code on failure

   __rte_experimental      int      rte_event_eth_rx_adapter_runtime_params_set      (uint8_t     id,     struct
       rte_event_eth_rx_adapter_runtime_params * params)
       Set the adapter runtime configuration parameters

       Parameters
           id Adapter identifier
           params  A  pointer  to  structure  of  type   struct   rte_event_eth_rx_adapter_runtime_params   with
           configuration  parameter values. The reserved fields of the structure must be initialized to zero and
           the  valid  fields  need  to  be  set  appropriately.  This  structure  can  be   initialized   using
           rte_event_eth_rx_adapter_runtime_params_init()  to  default  values  or  application  may  reset this
           structure and update the required fields.

       Returns

           • 0: Success

           • <0: Error code on failure

   __rte_experimental     int     rte_event_eth_rx_adapter_runtime_params_get      (uint8_t      id,      struct
       rte_event_eth_rx_adapter_runtime_params * params)
       Get the adapter runtime configuration parameters

       Parameters
           id Adapter identifier
           params A pointer to structure of type struct rte_event_eth_rx_adapter_runtime_params containing valid
           adapter parameters when return value is 0.

       Returns

           • 0: Success

           • <0: Error code on failure

Author

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DPDK                                             Version 24.11.2                   rte_event_eth_rx_adapter.h(3)