mlx5dv_devx_subscribe_devx_event_fd (3) Linux Manual Page
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.See Also
mlx5dv_open_device(3), mlx5dv_devx_create_event_channel(3), mlx5dv_devx_get_event(3)#AUTHOR
Yishai Hadas <yishaih [at] mellanox.com>