SMSC_FLAG_LINK
if ((sc->sc_flags & SMSC_FLAG_LINK) == 0)
sc->sc_flags &= ~SMSC_FLAG_LINK;
sc->sc_flags |= SMSC_FLAG_LINK;
if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) {
if ((sc->sc_flags & SMSC_FLAG_LINK) == 0 ||