The Arty-S7 does not have ethernet out of the box. It was selected as target because it was available and provides a decent FPGA device. Ethernet for the Arty can be provided by MultiNIC.
To test and debug hBPF this folder contains a simple testbench which instantiates a hBPF CPU, connects its status signals to some LEDs and switches and creates a serial Wishbone Bridge and LiteScope Debugger as shown in the following overview picture.
The physical connections on the Arty:
Build report for the included bitstream can be found here.