Re: [lcd4linux] Monitor Eth0 on T1?

[Michael R. <re...@eu...>]

Hi Eric again,

> I have a firewall with 4 eth* ports on it.  My eth0 is connected to a T1 
> which is rated at about 1.5mbit/s.  How do I configure lcd4linux to 
> monitor only that eth0 port and show's the usage in kbps/s and as a graph?
> 
> If I can get this to work, I'll be able to see my T1's utilization at a 
> glance..

I'm afraid this does not work at the moment, but it's on my Todo-List 
for a while now.

The problem is that this would need a bit redesign in the token 
structure. There is a _big_ redesign ongoing, but at the moment only in 
my mind.

YOu could patch lcd4linux so it does not sum up all the eth* devices, 
but use only eth0:

system.c function Net()


while ((s=strsep(&p, "\n"))) {
     int n, u;
     unsigned long v[16];
     n=sscanf (s, " eth%d: %ld %ld %ld %ld %ld %ld %ld %ld %ld %ld %ld 
%ld %ld %ld %ld %ld",
	      &u, &v[0], &v[1], &v[2], &v[3], &v[4], &v[5], &v[6], &v[7],
	      &v[8], &v[9], &v[10], &v[11], &v[12], &v[13], &v[14], &v[15]);


==> add the following line here:
if (u != 0) continue;
==> done!

     if (n==17) {
       pkg_rx+=v[0];
       pkg_tx+=v[8];
       *bytes=1;
     } else if (n==12) {
       pkg_rx+=v[0];
       pkg_tx+=v[5];
       *bytes=0;
     } else if (n>0) {
       error ("parse(/proc/net/dev) failed: unknown format");
       fd=-1;
       return -1;
     }
   }


warning! This is untested!

This would skip every line except eth0


HTH, Michael


-- 
netWorks                                          Vox: +43 316  698260
Michael Reinelt                                   Fax: +43 316  692343
Geisslergasse 4                                   GSM: +43 676 3079941
A-8045 Graz, Austria                          e-mail: re...@eu...