mlx5dv_get_data_direct_sysfs_path(3) mlx5dv_get_data_direct_sysfs_path(3)

mlx5dv_get_data_direct_sysfs_path - Get the sysfs path of a data direct device

#include <infiniband/mlx5dv.h>
int mlx5dv_get_data_direct_sysfs_path(struct ibv_context *context, char *buf,
                                      size_t buf_len)

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.

RDMA device context to work on.
The buffer where to place the sysfs path of the associated data direct device.
The length of the buffer.

Upon success 0 is returned or the value of errno on a failure.

The below specific error values should be considered.

There is no associated data direct device for the given *context*.
    
The input buffer size is too small to hold the full sysfs path.

Upon succees, the caller should add the /sys/ prefix to get the full sysfs path.

mlx5dv_reg_dmabuf_mr(3)

Yishai Hadas yishaih@nvidia.com