Re: [Leaf-user] cat /proc/interrupts

[Brad F. <br...@fr...>]

David, one of my firewalls is very similar to the setup you have
Maybe the information I've included inline will help a bit...

On Fri, 26 Apr 2002 17:20:11 PDT David Smead wrote:

> Jacques,
> 
> Thanks for the input.  I'm not showing interrupts, but the drivers seem to
> load, and I/O space is assigned.

This is similar to the behavior I have seen with the 3c509b NICs that
are not active.  I have a 6 NIC setup where eth0-eth2 are up and have
addresses assigned and eth3-eth5 inactive.  Interrupts are assigned to
eth0-eth2 but not eth3-eth5:

  firewall: -root-
  # cat /proc/interrupts
             CPU0
    0:   12813706          XT-PIC  timer
    1:          2          XT-PIC  keyboard
    2:          0          XT-PIC  cascade
    3:          6          XT-PIC  serial
    4:          6          XT-PIC  serial
    5:     279574          XT-PIC  eth0
    7:       6574          XT-PIC  eth1
    8:          2          XT-PIC  rtc
    9:       1061          XT-PIC  eth2
   13:          1          XT-PIC  fpu
  NMI:          0

  firewall: -root-
  # ip addr
  1: lo: <LOOPBACK,UP> mtu 3924 qdisc noqueue
      link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
      inet 127.0.0.1/8 brd 127.255.255.255 scope global lo
  2: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100
      link/ether 00:a0:24:2a:e6:75 brd ff:ff:ff:ff:ff:ff
      inet aa.bb.cc.dd/22 brd 255.255.255.255 scope global eth0
  3: eth1: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100
      link/ether 00:a0:24:2a:e6:e6 brd ff:ff:ff:ff:ff:ff
      inet 192.168.1.254/24 brd 192.168.1.255 scope global eth1
  4: eth2: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100
      link/ether 00:a0:24:2a:e6:eb brd ff:ff:ff:ff:ff:ff
      inet 192.168.2.254/24 brd 192.168.2.255 scope global eth2
  5: eth3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 100
      link/ether 00:a0:24:2a:e6:f5 brd ff:ff:ff:ff:ff:ff
  6: eth4: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 100
      link/ether 00:a0:24:2a:e6:fa brd ff:ff:ff:ff:ff:ff
  7: eth5: <BROADCAST,MULTICAST> mtu 1500 qdisc noop qlen 100
      link/ether 00:a0:24:2a:e7:13 brd ff:ff:ff:ff:ff:ff


> From dmesg:
> eth0: 3c5x9 at 0x300, 10baseT port, address  00 50 04 04 7c 94, IRQ 15.
> 3c509.c:1.18a 17N...@sc...
> http://www.scyld.com/network/3c509.html
> eth1: 3c5x9 at 0x310, 10baseT port, address  00 60 97 79 11 7b, IRQ 3.
> 3c509.c:1.18a 17N...@sc...
> http://www.scyld.com/network/3c509.html

  [ remaining examples snipped ]

That's very similar to what I'm seeing:

  firewall: -root-
  # dmesg | grep 3c509
  eth0: 3c509 at 0x300 tag 1, 10baseT port, address  00 a0 24 2a e6 75, IRQ 5.
  3c509.c:1.16 (2.2) 2/3/98 be...@ce....
  eth1: 3c509 at 0x310 tag 2, 10baseT port, address  00 a0 24 2a e6 e6, IRQ 7.
  3c509.c:1.16 (2.2) 2/3/98 be...@ce....
  eth2: 3c509 at 0x320 tag 3, 10baseT port, address  00 a0 24 2a e6 eb, IRQ 9.
  3c509.c:1.16 (2.2) 2/3/98 be...@ce....
  eth3: 3c509 at 0x330 tag 4, 10baseT port, address  00 a0 24 2a e6 f5, IRQ 10.
  3c509.c:1.16 (2.2) 2/3/98 be...@ce....
  eth4: 3c509 at 0x340 tag 5, 10baseT port, address  00 a0 24 2a e6 fa, IRQ 11.
  3c509.c:1.16 (2.2) 2/3/98 be...@ce....
  eth5: 3c509 at 0x350 tag 6, 10baseT port, address  00 a0 24 2a e7 13, IRQ 12.
  3c509.c:1.16 (2.2) 2/3/98 be...@ce....


> From /proc/interrupts:
> 
>            CPU0
>   0:    8241668          XT-PIC  timer
>   1:        400          XT-PIC  keyboard
>   2:          0          XT-PIC  cascade
> NMI:          0
> ERR:          0
> 
> Any ideas about how this happens are appreciated.  This is running on a
> Dell Optiplex 575 - P75 with 24 MB ram, no ide cables plugged in.  All
> nics have pnp disabled and were configured as the dmesg shows.

Are any of your interfaces up?  If not, the /proc/interrupts
output you are seeing is inline with what I'm seeing on my
firewall.  (Not that it matters, but it's a Dell Optiplex GMT
5133.)  My guess is that everything is normal and the
interrupts will show up in /proc/interrupts when the interfaces
are brought up.

--Brad

> Sincerely,
> 
> David Smead
> http://www.amplepower.com.