TXSI_RTT_MEASURE_START
if (txsi->flags & TXSI_RTT_MEASURE_START ||
if (txsi->flags & TXSI_RTT_MEASURE_START
if (txsi->flags & TXSI_RTT_MEASURE_START || measurenext)
txsi->flags &= ~TXSI_RTT_MEASURE_START;
txsi->flags |= TXSI_RTT_MEASURE_START;