NM_OPT_SYNC_KLOOP_DIRECT_TX
direct_tx = !!(mode_opt->mode & NM_OPT_SYNC_KLOOP_DIRECT_TX);
if (mode_opt->mode & ~(NM_OPT_SYNC_KLOOP_DIRECT_TX |
NM_OPT_SYNC_KLOOP_DIRECT_TX | NM_OPT_SYNC_KLOOP_DIRECT_RX);
NM_OPT_SYNC_KLOOP_DIRECT_TX);