NAME¶

mlx5dv_get_data_direct_sysfs_path - 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¶

mlx5dv_reg_dmabuf_mr(3)

AUTHOR¶

Yishai Hadas yishaih@nvidia.com