BCSP_SLIP_ESCAPE
if (putc(BCSP_SLIP_ESCAPE, &tp->t_outq) < 0)
} else if (*rptr == BCSP_SLIP_ESCAPE) {
if (putc(BCSP_SLIP_ESCAPE, &tp->t_outq) < 0)
case BCSP_SLIP_ESCAPE:
if (sc->sc_slip_rxexp == BCSP_SLIP_ESCAPE) {
sc->sc_slip_rxexp = BCSP_SLIP_ESCAPE;
case BCSP_SLIP_ESCAPE:
BCSP_SLIP_ESCAPE;