On Thu, Nov 5, 2020 at 1:10 AM David Laight <david.lai...@aculab.com> wrote: > > > This driver transports LAPB (X.25 link layer) frames over TTY links. > > I don't remember any requests to run LAPB over anything other > than synchronous links when I was writing LAPB implementation(s) > back in the mid 1980's. > > If you need to run 'comms over async uart links' there > are better options. > > I wonder what the actual use case was?
I think this driver was just for experimental purposes. According to the author's comment at the beginning of x25_asy.c, this driver didn't implement FCS (frame check sequence), which was required by CCITT's standard. So I think this driver was not suitable for real-world use anyway.
