pub unsafe extern "C" fn crypt_benchmark_pbkdf(
cd: *mut crypt_device,
pbkdf: *mut crypt_pbkdf_type,
password: *const c_char,
password_size: size_t,
salt: *const c_char,
salt_size: size_t,
volume_key_size: size_t,
progress: crypt_benchmark_cb,
usrptr: *mut c_void,
) -> c_int