mlx5dv_get_data_direct_sysfs_path - Man Page
Get the sysfs path of a data direct device
Synopsis
#include <infiniband/mlx5dv.h>
int mlx5dv_get_data_direct_sysfs_path(struct ibv_context *context, char *buf,
size_t buf_len)Description
Get the sysfs path of the data direct device that is associated with the given context.
This lets an application to discover whether/which data direct device is associated with the given context.
Arguments
- context
RDMA device context to work on.
- buf
The buffer where to place the sysfs path of the associated data direct device.
- buf_len
The length of the buffer.
Return Value
Upon success 0 is returned or the value of errno on a failure.
Errors
The below specific error values should be considered.
- ENODEV
There is no associated data direct device for the given *context*.
- ENOSPC
The input buffer size is too small to hold the full sysfs path.
Notes
Upon succees, the caller should add the /sys/ prefix to get the full sysfs path.
See Also
Author
Yishai Hadas yishaih@nvidia.com\c