CAN_LINKMODE_LOOPBACK
if (do_canflag(sock, canifname, CAN_LINKMODE_LOOPBACK,
CAN_LINKMODE_LOOPBACK;
if (sc->sc_linkmodes & CAN_LINKMODE_LOOPBACK) {
if (sc->sc_linkmodes & CAN_LINKMODE_LOOPBACK)
if (sc->sc_linkmodes & CAN_LINKMODE_LOOPBACK) {
if ((sc->sc_timecaps.cltc_linkmode_caps & CAN_LINKMODE_LOOPBACK) == 0)
sc->sc_timecaps.cltc_linkmode_caps |= CAN_LINKMODE_LOOPBACK;