CALLBACK_CBCP
cx->cfg.callback.opmask |= CALLBACK_BIT(CALLBACK_CBCP);
if (arg->cx->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_CBCP)) {
CALLBACK_BIT(CALLBACK_CBCP) ||
CALLBACK_BIT(CALLBACK_CBCP)) &&
case CALLBACK_CBCP:
} else if (p->dl->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_CBCP)) {
nak.data[0] = CALLBACK_CBCP;
else if (lcp->want_callback.opmask & CALLBACK_BIT(CALLBACK_CBCP))
lcp->want_callback.opmask &= ~CALLBACK_BIT(CALLBACK_CBCP);
else if (p->dl->cfg.callback.opmask & CALLBACK_BIT(CALLBACK_CBCP))
nak.data[0] = CALLBACK_CBCP;
} else if (lcp->want_callback.opmask & CALLBACK_BIT(CALLBACK_CBCP)) {
*o->data = CALLBACK_CBCP;