mlx5dv_devx_subscribe_devx_event3
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.
Usage
-
#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)
Overview
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.
Releases
4 releases since Debian 11 (Bullseye); the text changed 3 times.