mlx5dv_devx_subscribe_devx_event, mlx5dv_devx_subscribe_devx_event_fd

Section: (3)
Updated:
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NAME

mlx5dv_devx_subscribe_devx_event - Subscribe over an event channel for device events.

mlx5dv_devx_subscribe_devx_event_fd - Subscribe over an event channel for device events to signal eventfd.

SYNOPSIS


#include <infiniband/mlx5dv.h>

int mlx5dv_devx_subscribe_devx_event(struct mlx5dv_devx_event_channel *dv_event_channel,
                     struct mlx5dv_devx_obj *obj,
                     uint16_t events_sz,
                     uint16_t events_num[],
                     uint64_t cookie)

int mlx5dv_devx_subscribe_devx_event_fd(struct mlx5dv_devx_event_channel *dv_event_channel,
                    int fd,
                    struct mlx5dv_devx_obj *obj,
                    uint16_t event_num)

DESCRIPTION

Subscribe over a DEVX event channel for device events.

ARGUMENTS

dv_event_channel: Event channel to subscribe over.
fd: A file descriptor that previously was opened by the eventfd() system call.
obj: DEVX object that events_num relates to, can be NULL for unaffiliated events.
events_sz: Size of the events_num buffer that holds the events to subscribe for.
events_num: Holds the required event numbers to subscribe for, numbers are according to the device specification.
cookie: The value to be returned back when reading the event, can be used as an ID for application use.

NOTES

When mlx5dv_devx_subscribe_devx_event_fd will be used the fd will be signaled once an event has occurred.