[eepro100] eth0: card reports no resources

Donald Becker becker@scyld.com
Tue Sep 17 20:00:01 2002

On Tue, 17 Sep 2002, John Jones wrote:

> I was wondering if there was any new information or resources on the Intel
> 'card reports no resources' problem?

This has been covered many time: there are many problems that can
trigger this message.

>  From what I can tell, this was fixed by newer versions of the intel
> drivers, but could something else be causing these messages?

Some of the problem sources, such as out-of-skbuffs, cannot be
fixed. Removing the message does *not* fix the problem.  Other problems,
such as firmware bugs, cannot be fixed by the driver.  Yet other problem
are caused by the driver, and you didn't specify which driver version
you are using.

>  Some of the research of posts I have done mentioned mbuf
> overflows, and I am wondering if such messages could be caused by synflood?

Linux does not use mbufs, it uses skbuffs.

Yes, a buffer shortage could be caused by various type of incoming
traffic.  Synfloods are one.  Compounding the problem is that post 2.0
kernels are not very good about keeping around available skbuffs, and
can take a lot of CPU time to allocate new memory regions for skbuffs.

> We are having trouble with a firewall machine that seems to be getting this
> plague for 10-20 mins at a time.

What is the incoming packet rate?
Have you increased the VM parameters as previously suggested on this list?

Donald Becker				becker@scyld.com
Scyld Computing Corporation		http://www.scyld.com
410 Severn Ave. Suite 210		Second Generation Beowulf Clusters
Annapolis MD 21403			410-990-9993