droms@sol.bucknell.EDU ("Ralph E. Droms") (03/22/89)
Can anyone give me a pointer to SLIP for "Ultrix-32 V3.0 (Rev 64)"? - Ralph Droms Computer Science Department droms@sol.bucknell.edu 323 Dana Engineering droms@bknlvms.bitnet Bucknell University (717) 524-1145 Lewisburg, PA 17837
avolio@decuac.dec.com (Frederick M. Avolio) (03/23/89)
SLIP comes with ULTRIX-32 v3.0. It is in the ULXBASE030 subset. Fred
vixie@decwrl.dec.com (Paul A Vixie) (04/05/89)
[Ralph Droms] # Can anyone give me a pointer to SLIP for "Ultrix-32 V3.0 (Rev 64)"? There's one there already. It has three pieces: /usr/sys/BINARY.vax/if_sl.o /usr/new/slattach /etc/sliphosts The sliphosts file has enough documentation in it to get you going. By putting the slattach program in /usr/new, Digital is trying to tell you that it is not supported. Keep this in mind if you find the driver less than robust wrt your system's uptime. I ported the 4.3bsd SLIP driver to Ultrix 3.0 in about an hour. Mostly it took some changes to the way buffers were sent upstream into IP, and in the way things were allocated (see /usr/include/sys/kmalloc.h for the One True Way to allocate kernel memory in Ultrix). I also had to call slattach() from sys/init_main.c, since the Ultrix if_sl.c allocates its interfaces dynamically (this means they don't appear in "netstat -i" until you open them) and they didn't need any boot-time initialization. The 4.3bsd driver needs to get called at boot time to allocate its if_softc array and initialize it. How to modify init_main.c when you don't have sources is a problem, I admit :-). The 4.3bsd SLIP driver, once ported, works perfectly with the Ultrix 3.0 /usr/new/slattach program. This slattach program is awfully nice, in my somewhat biased opinion, since it will dial up and run a UUCP-ish chat script for you when you want to connect. It lacks something when compared to CSNET's dial-on-demand implementation, but it's a big win over tip(1) and ~^Z for just getting the interface going. -- Paul Vixie Work: vixie@decwrl.dec.com decwrl!vixie +1 415 853 6600 Play: paul@vixie.sf.ca.us vixie!paul +1 415 864 7013