mlx5dv_get_data_direct_sysfs_path(3)

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