Linux Ethernet Bridging - Apr 2007 - [Bridge] Problem with bridge/8139too module under 2.4.27?

Hi there,

I'm currently experiencing a minor problem using the bridge module under
kernel 2.4.27 part of the Devil Linux distribution
(http://www.devil-linux.org). The problem I am having is that when the
bridge is unloaded during a reboot I receive the following errors in
/var/log/messages:

Nov 14 13:22:13 src@Devil kernel: unregister_netdevice: waiting for br0 to
become free. Usage count = 2

This message is repeatedly output to the console until I manually go and
power cycle it. I've traced this through the startup/shutdown scripts, and
have determine that the problem exists in the following sequence of
commands:

brctl addbr br0
brctl addif br0 eth0
brctl addif br0 eth1
ifconfig eth0 up
ifconfig eth1 up

ifconfig eth0 down
ifconfig eth1 down
brctl delif eth0
brctl delif eth1
brctl delbr br0   <------ This is where the problem occurs

The machine running the kernel is a brouter with 4 NICs all running under
the 8139too driver - eth0 and eth1 form a bridge while eth2 and eth3 are
connected to different internal networks. I'm guessing that this is either a
problem with the bridge or 8139too modules, and so any advice would be
gratefully received :)


Many thanks,

Mark.

------------------------
WebBased Ltd
South West Technology Centre
Tamar Science Park
Plymouth
PL6 8BT 

T: +44 (0)1752 791021
F: +44 (0)1752 791023
W: http://www.webbased.co.uk

On Mon, 15 Nov 2004 10:29:35 -0000
"Mark Cave-Ayland" <m.cave-ayland@webbased.co.uk> wrote:
> Hi there,
> 
> I'm currently experiencing a minor problem using the bridge module
under
> kernel 2.4.27 part of the Devil Linux distribution
> (http://www.devil-linux.org). The problem I am having is that when the
> bridge is unloaded during a reboot I receive the following errors in
> /var/log/messages:
> 
> Nov 14 13:22:13 src@Devil kernel: unregister_netdevice: waiting for br0 to
> become free. Usage count = 2
> 
> This message is repeatedly output to the console until I manually go and
> power cycle it. I've traced this through the startup/shutdown scripts,
and
> have determine that the problem exists in the following sequence of
> commands:
> 
> brctl addbr br0
> brctl addif br0 eth0
> brctl addif br0 eth1
> ifconfig eth0 up
> ifconfig eth1 up
> 
> ifconfig eth0 down
> ifconfig eth1 down
> brctl delif eth0
> brctl delif eth1
ifconfig br0 down

Take take the bridge down as well. The code on 2.4 is not as robust
or complete as 2.6 and probably needs that.
> brctl delbr br0   <------ This is where the problem occurs
> 
> The machine running the kernel is a brouter with 4 NICs all running under
> the 8139too driver - eth0 and eth1 form a bridge while eth2 and eth3 are
> connected to different internal networks. I'm guessing that this is
either a
> problem with the bridge or 8139too modules, and so any advice would be
> gratefully received :)
> 
> 
> Many thanks,
> 
> Mark.
> 
> ------------------------
> WebBased Ltd
> South West Technology Centre
> Tamar Science Park
> Plymouth
> PL6 8BT 
> 
> T: +44 (0)1752 791021
> F: +44 (0)1752 791023
> W: http://www.webbased.co.uk
>  
> 
> 
> 
>