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SubjectRe: 21041 transmit timed out
On Sun, 11 May 2003, Geert Uytterhoeven wrote:
> On Sun, 20 Apr 2003, Geert Uytterhoeven wrote:
> > Under heavy network activity (e.g. downloading ISOs), my Tulip card (D-Link
> > DE-530+ with DECchip 21041) still goes down with 2.4.20.
> >
> > Suddenly I start getting messages of the form:
> > | NETDEV WATCHDOG: eth0: transmit timed out
> > | eth0: 21041 transmit timed out, status fc660000, CSR12 000051c8, CSR13 ffffef01, CSR14 ffffffff, resetting...
> > | eth0: 21143 100baseTx sensed media.
> >
> > and the network no longer works. Sometimes it automatically recovers after a
> > while (without printing additional messages), but usually I need to do a manual
> > ifconfig down/up sequence to revive the network.

[...]

> It still takes a few minutes to recover, but at least it recovers
> automatically, and within the TCP timeout limit, so no connections are lost.
>
> I tested this by transfering several gigabytes across the network using netcat,
> and it always recovered without needing manual intervention.
>
> So I suggest the following patch:
>
> --- linux-2.4.20/drivers/net/tulip/tulip_core.c.orig Tue Oct 29 18:41:48 2002
> +++ linux-2.4.20/drivers/net/tulip/tulip_core.c Sun May 11 11:31:29 2003
> @@ -575,7 +575,7 @@
> dev->if_port = 2 - dev->if_port;
> } else
> dev->if_port = 0;
> - else
> + else if (dev->if_port != 0 || (csr12 & 0x0004) != 0)
> dev->if_port = 1;
> tulip_select_media(dev, 0);
> }
>
> Any comments?

I can confirm that this patch fixed my problem. Sometimes transmission still
times out, but the driver recovers automatically within 3 minutes. The machine
has been up for more than one month.

Still no comments?

Gr{oetje,eeting}s,
Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds

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