[Fwd: Call for testers: 2.2 patch for 3x59x.c]

[Andrew Morton]

David Fries wrote:
> 
> I just tried the 2.3.99-pre6-3  and your patch
> 3c59x-2.3.99-pre6-3-1-patch.gz and I see the same problem as all the other
> versions on my computer.
> 
> 3c575_cb.c:v0.99L+LK1.1.2  3/19/2000  Donald Becker and others
> http://cesdis.gsfc.nasa.gov/linux/drivers/vortex.html
> eth0: 3Com PCI 3c905B Cyclone 100baseTx at 0x6c00,  00:10:5a:09:a9:6e, IRQ
> 15
>   8K byte-wide RAM 5:3 Rx:Tx split, 100baseTX interface.
> AKPM: acpi_set_WOL skipped
>   Enabling bus-master transmits and whole-frame receives.
> 
> I do a buch of networking at the same time as graphics stuff and networking
> stops receiving packets.  It is a module so it wouldn't take much for me to
> try other code.

Ouch.

I'm seeing something similar with a 3CCFE575CT cardbus card, and I'm in
correspondence with a person who is seeing similar problems with a
574-based Cardbus card.  His card uses a quite different driver, BTW -
3c5747_cs.c

What we're both seeing is that driver comes up receive-only about 80% of
the time.  If you down and up the interface enough times it comes good
and stays that way.   A few times I've seen the interface come up and
then go silly after a few seconds.

Next time it happens, could you please run tcpdump on the sick machine,
ping it from another machine and tell me whether you also are seeing
this receive-only behaviour?

Also, I'd really appreciate it if you could grab Don's 'vortex-diag'
tool from http://cesdis.gsfc.nasa.gov/linux/diag/ and build it on the
offending machine.  When the NIC plays up, please run 'vortex-diag -a'
and send me the output.

On my laptop, I notice that bit 9 of the NetworkDiagnostic register
(window 4) is stuck high when it's malfunctioning.  This appears to mean
that the transmitter is waiting for inactivity on the LAN.

I don't think it's a duplex problem.  If the card accidentally gets into
full-duplex mode it simply hoses the bits out and ignores current
activity on the wire.

Finally, could you please also send me info on your LAN setup? 10/100? 
Full/Half duplex?

Thanks.  I'll be concentrating on this one for the next day or two. 
Hope to get it nailed, but it's subtle.

-- 
-akpm-
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