TX_TS_FLAG_ONE_STEP_SYNC
tx->ts_flags |= TX_TS_FLAG_ONE_STEP_SYNC;
tx->ts_flags &= ~TX_TS_FLAG_ONE_STEP_SYNC;
if (tx->ts_flags & TX_TS_FLAG_ONE_STEP_SYNC)
if (tx->ts_flags & TX_TS_FLAG_ONE_STEP_SYNC)