TAP_OPEN
if (sc->tap_flags & TAP_OPEN) {
sc->tap_flags |= TAP_OPEN;
sc->tap_flags &= ~TAP_OPEN;
if (sc->tap_flags & TAP_OPEN)
if (sc->tap_flags & TAP_OPEN)
if ((sc->tap_flags & TAP_OPEN) && dummy < sizeof(ifs->ascii)) {
#define TAP_READY (TAP_OPEN | TAP_INITED)