Implementation of PTP in Ettus N320

Dear Mailing List,

I'm currently working on a project about the protocol White Rabbit and PTP. To do this, I use the USRP N320, and I'm able to start a master/slave architecture and run a complete synchronization between two devices. For now, I have to redirect PTP messages over radio instead of optical fiber. So for the first step, I'm looking for the source code that implement the PTP protocol. I didn't found anything inside the hardware source code of UHD. So I thought it was a software implementation of PTP, but I didn't found any deamon running in the Ettus N320 during the synchronization. I also found the wrpc-sw which include as a submodule the new version PPSi which clearly implement PTP but it seems like any of those two software are not running on my system.

My question is: Where is implemented the PTP protocol for the synchronization for the Ettus N320 between Master and Slave?

Best regards,

Mathis