Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR)

[Eric Blossom]

Another possible way to handle flow control would be to use the old
HDLC link layer protocol that goes by the name of LAPD, V.42,
called-something-else-in-GSM, etc.  You'd want the version that starts
with a SABME command (Set Asynchronous Balanced Mode Extended).
There's probably a free implementation somewhere.

IIRC it can be implemented with two timers and a pretty small state
machine.  Might be more amenable to an FPGA implementation than TCP.

Eric