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Date: Mon, 12 May 1997 11:50:22 -0700
From: Julian Elischer <julian@whistle.com>
Organization: Whistle Communications
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To: Joerg Wunsch <joerg_wunsch@uriah.heep.sax.de>
CC: FreeBSD-current users <freebsd-current@FreeBSD.ORG>
Subject: Re: cx(4) anybody?
References: <19970511120155.RZ16393@uriah.heep.sax.de>
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J Wunsch wrote:
> 
> Hiya,
> 
> is anybody using the cx(4) (Cronyx HDLC) driver, together with sync
> PPP?
> 


> I plan to reuse Serge Vakulenko's sync PPP layer (/sys/net/if_sppp*)
> for PPP over ISDN.  I will shortly commit a first change that improves
> the debug output, and plan to add further improvements.  If anybody is
> using it on cx(4) (where it has originally been written for), i would
> like to hear from you so to make sure i don't break this.
> 
> Before you're asking: the sppp layer has a clear API towards the HDLC
> layer, and ISDN is basically in the same boat as the cx(4) hardware
> HDLC here, so this makes sppp much more attractive than the existing
> (async) kernel ppp.  I've already got it talk LCP (though they still
> don't negotiate successfully), and this was with about one day of
> work.
> 
before you go too far down this path,

are you interested in looking a teh whistle networking extensions?

It is a "streams-like" system
I have modules that do the following:

ppp  framing
frame relay (two modes)
cisco HDLC
BSD interface emulation (simulates a tun interface kindof)
socket node (any thing that hits it comes out a socket that can be read)
Tee node (for debugging)
black-hole
echo
sync-card driver

several people have looked a thte code  but it will be coming up
for full public release in a few months. till then it's 
'limitted release' (you ask, I give you a copy) ) :)