GEM_LINK
IFF_DRV_RUNNING || (sc->sc_flags & GEM_LINK) == 0)
if ((sc->sc_flags & GEM_LINK) != 0)
sc->sc_flags |= GEM_LINK;
sc->sc_flags &= ~GEM_LINK;
(sc->sc_flags & GEM_LINK) != 0) {
sc->sc_flags &= ~GEM_LINK;