l2cap_setopt
err = l2cap_setopt(sc->sc_ctl_l, &sc->sc_mode);
err = l2cap_setopt(sc->sc_int_l, &sc->sc_mode);
err = l2cap_setopt(sc->sc_ctl, &sc->sc_mode);
err = l2cap_setopt(sc->sc_int, &sc->sc_mode);
err = l2cap_setopt(sc->sc_ctl_l, &sc->sc_mode);
err = l2cap_setopt(sc->sc_int_l, &sc->sc_mode);
err = l2cap_setopt(sc->sc_ctl, &sc->sc_mode);
err = l2cap_setopt(sc->sc_int, &sc->sc_mode);
int l2cap_setopt(struct l2cap_channel *, const struct sockopt *);
err = l2cap_setopt(pcb, sopt);
err = l2cap_setopt(dlc->rd_session->rs_l2cap, &sopt);