Thank you for your help.
I have finished the RX and TX with Streamers in WRPC.
Now I have a problem:
It seems that the received ARP data frame(ARP reply) is not transferred to the WRF, but we need it to go through the WRF, then it can be processed by our parts merged with WRPC.
Could you please tell me how to make the received arp data frame go through WRF?