Does CPTS detect the Ethernet Port Events by checking what?

Hi.

I'm using AM335x GeneralPurpose EVM to implement PTP(IEEE1588). But, even if it transmits a PTP time sync packet, CPTS cannot detect an Ethernet port transmit event. In addition, even if it receives a PTP packet, it does not detect an Ethernet port receive event.

Does anything occur as a cause of this problem? Incidentally, it can detect other events(Timestamp push event, Timestamp rollover event and Timestamp half rollover event).

thanks.