root@nardacdc002.arpa (02/06/90)
Fellow Net people,
I had some problems installing SLIP (Serial Line IP) on our SUN
3/260 running SUN OS 3.5 a few days ago. Thanks to this users group I have since
resolved the problem and SLIP is available to our users. Here is a summary of
problems encountered and solutions to the problems:
Apparently there are quite a few implementations of SLIP out there on the
net. The TORONTO implementation (slip-3.x.tar.Z from neat.ai.toronton.edu) did
not work on this machine for some reason. The README file was not clear, at
least to me, and when I relinked the Kernel my machine would not boot up. I
will attempt to install this implementation again and summarize results.
I ftp'd another implementation from mimsy.umd.edu (128.8.128.8) and this
one worked. Here is a summary of steps to take when installing SLIP
(Serial Line IP):
Step 1:
In our machine I had to add the line "/sys/if_sl.c optional sl device-driver"
in the file /usr/sys/conf/files. In SUN OS 3.5 the "files" file has an entry
that reads "sys/tty_sl.c optional sl device-driver". I had to delete this line
since I added the if_sl.c" line into files.
Note:
Step 2:
Add the line "pseudo-device sl2" in the config file (YOUR_KERNEL_NAME)
in /usr/sys/conf
Step 3:
Remove the directory called /usr/sys/YOUR_KERNEL_NAME.
Perform a "touch" on ALL c-files under /sys to get if_sl.c
compiled.
Step 4:
Go to your /usr/sys/conf directory and run "config YOUR_KERNEL_NAME". This will
create a new /usr/sys/YOUR_KERNEL_NAME directory.
Step 5:
Go back to /usr/sys/YOUR_KERNEL_NAME directory and perform a "make".
This will relink your Kernel file and make a new vmunix for your machine.
If your Kernel was built correctly do the following:
Copy your old vmunix to vmunix.old (cp /vmunix /vmunix.old).
Copy /usr/sys/YOUR_KERNEL_NAME/vmunix to the root directory
(cp /usr/sys/YOUR_KERNEL_NAME/vmunix /vmunix).
If your Kernel comes back with the message:
undefined:
_if_detach
See my NOTE at the end and go back to Step 5.
Step 6:
Reboot your system with the new Kernel.
Step 7:
Once your system is up and running compile the slattach.c program
( cc slattach.c -o slattach).
Step 8:
run slattach.
(i.e. slattach TTYNAME SOURCE-NAME DESTINATION-NAME [BAUDRATE])
That's it! Again I will attempt to get the Toronto implementation to work but I make no promises. Hope this helps!
NOTE:
Mark Weiser provided this code and I added it at the end of if_sl.c. Once I
added it the Kernel relinked correctly.
Thanks Mark!
From: Mark Weiser <mark@arisia.Xerox.COM>
To: lclaudio@wnyosi2.arpa
Subject: if_detach
Status: R
/*
* This code normally lives at the end of /sys/net/route.c. This file
* is not intended to be compilable as is. It may make sense, if you
* install this code, to stick the following line in ioctl.h:
* #define SIOCIFDETACH _IOW(i, 23, struct ifreq)
/*
/*
* Detach an interface from the
* list of "active" interfaces.
*/
if_detach(ifp)
struct ifnet *ifp;
{
register struct ifnet *p = ifnet;
int s = splimp();
if (p == ifp)
ifnet = p->if_next;
else
while (p)
if (p->if_next == ifp) {
p->if_next = ifp->if_next;
break;
} else
p = p->if_next;
splx(s);
return;
}
Special thanks to the following people:
Bjorn Breidegard
Dept. of Computer Engineering
Lund University
Sweden
Email: bjorn@dit.lth.se
Mark Weiser
From: Mark Weiser <mark@arisia.Xerox.COM>