Function mlx5dv_reg_dmabuf_mr 

pub unsafe extern "C" fn mlx5dv_reg_dmabuf_mr(
    pd: *mut ibv_pd,
    offset: u64,
    length: usize,
    iova: u64,
    fd: c_int,
    access: c_int,
    mlx5_access: c_int,
) -> *mut ibv_mr