Function mbedtls_ssl_conf_rng 

pub unsafe extern "C" fn mbedtls_ssl_conf_rng(
    conf: *mut mbedtls_ssl_config,
    f_rng: mbedtls_f_rng_t,
    p_rng: *mut c_void,
)

\brief Set the random number generator callback

\note The callback with its parameter must remain valid as long as there is an SSL context that uses the SSL configuration.

\param conf SSL configuration \param f_rng RNG function (mandatory) \param p_rng RNG parameter