PPPOE_DISC_TIMEOUT
retry_wait = PPPOE_DISC_TIMEOUT * (1 + sc->sc_padi_retried);
PPPOE_DISC_TIMEOUT * (1 + sc->sc_padi_retried));
PPPOE_DISC_TIMEOUT * (1 + sc->sc_padr_retried));
timeout_add_sec(&sc->sc_timeout, PPPOE_DISC_TIMEOUT);
PPPOE_DISC_TIMEOUT * (1 + sc->sc_padr_retried));