[eepro100] eepro100 hangs on 10 Mbps LAN

[Danilo Godec]

On Wed, 18 Jul 2001, Donald Becker wrote:

> On Wed, 18 Jul 2001, Danilo Godec wrote:
>
> > Subject: Re: [eepro100] eepro100 hangs on 10 Mbps LAN
>
> Presumably a 10Mbps repeater, correct?
>

Well, yes, a plain, 'silly' 10Mbps Compex hub. I need to test this as our
machines are often connected to 10Mbps LANs.

> > Disregard what I said, just 45 seconds after sending the mail the machine
> > hung again and it did for four more times. I'm attaching the output of
> > eepro100-diag with several options:
>
> Was there a message in the log?

No, no message. The machine locks up hard in a moment, it probably has no
chance to write anything down. Even the CTRL-ALT-DEL or SysRq don't work.
The only key that works is the HW reset button.

>
> > eepro100-a: eepro100-diag -a (module not loaded)
>
> Was this run while the interface was still up?

Nope, eepro100-a is the output of eepro100-diag when the module was
un-loaded (but yes, it was loaded once before running the diag). Should I
disable the on-boot module loading and run eepro100-diag as the first
thing?

>
> > PS: The machine works flawlessly when connected to a 100 Mbps LAN.
>
> This is a very valuable hint.  I suspect a problem with 16-collision
> recovery, which doesn't get tested with our current test suite.

Well, I have a lot of Intel D815EEA-LAN motherboards out there and I only
have problems with those connected to 10 Mbps. I can run tests (ttcp) in
our local 100 Mbps LAN to make sure though (ttcp is what I use to make a
lot of LAN traffic).

I hope I helped a bit.

Regards, Danilo

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