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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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