Re: Help, eth0: transmit timed out!

[David Shirley]

Its strange we have another machine, exact same setup,
hardware/software and it doesn't have any problems.

The other thing is that sometimes the machine freezes totally,
and othertimes it comes back after 30 secs??

FYI: Its not a modular kernel, but ill try the printk thing.

Dave.
----- Original Message -----
From: "Denis Vlasenko" <[e-mail]>
To: "David Shirley" <[e-mail]>; <[e-mail]>
Sent: Wednesday, March 12, 2003 9:37 PM
Subject: Re: Help, eth0: transmit timed out!

> On 12 March 2003 07:23, David Shirley wrote:
> > Hi All,
> >
> > Just installed Redhat 7.3 on an Athlon 2000 system (2.4.20).
> >
> > We have a 3c905c network card, and when I try copying files from an
> > nfs mount I get this in the logs:
> >
> Mar 12 13:15:11 ark kernel: NETDEV WATCHDOG: eth0: transmit timed out
> Mar 12 13:15:11 ark kernel: eth0: transmit timed out, tx_status 00 status
e000.
> Mar 12 13:15:11 ark kernel:   diagnostics: net 0cc6 media 8880 dma
000000a0.
> Mar 12 13:15:11 ark kernel:   Flags; bus-master 1, dirty 4048(0) current
4064(0)
> Mar 12 13:15:11 ark kernel:   Transmit list fffffff8 vs. f7ea9200.
> Mar 12 13:15:11 ark kernel:   0: @f7ea9200  length 800000b6 status
000000b6
> Mar 12 13:15:11 ark kernel:   1: @f7ea9240  length 800000b6 status
000000b6
> Mar 12 13:15:11 ark kernel:   2: @f7ea9280  length 800000b6 status
000000b6
> Mar 12 13:15:11 ark kernel:   3: @f7ea92c0  length 800000b6 status
000000b6
> Mar 12 13:15:11 ark kernel:   4: @f7ea9300  length 800000b6 status
000000b6
> Mar 12 13:15:11 ark kernel:   5: @f7ea9340  length 800000b6 status
000000b6
> Mar 12 13:15:11 ark kernel:   6: @f7ea9380  length 800000b6 status
000000b6
> Mar 12 13:15:11 ark kernel:   7: @f7ea93c0  length 800000b6 status
000000b6
> Mar 12 13:15:11 ark kernel:   8: @f7ea9400  length 800000b6 status
000000b6
> Mar 12 13:15:11 ark kernel:   9: @f7ea9440  length 800000b6 status
000000b6
> Mar 12 13:15:11 ark kernel:   10: @f7ea9480  length 800000b6 status
000000b6
> Mar 12 13:15:11 ark kernel:   11: @f7ea94c0  length 800000b6 status
000000b6
> Mar 12 13:15:11 ark kernel:   12: @f7ea9500  length 800000b6 status
000000b6
> Mar 12 13:15:11 ark kernel:   13: @f7ea9540  length 800000b6 status
000000b6
> Mar 12 13:15:11 ark kernel:   14: @f7ea9580  length 800000b6 status
800000b6
> Mar 12 13:15:11 ark kernel:   15: @f7ea95c0  length 800000b6 status
800000b6
> Mar 12 13:15:11 ark kernel: eth0: Resetting the Tx ring pointer.
> >
> > Usually the machine freezes up after this, and I can't ping it,
>
> Drivers tend to be less stable that core kernel. Maybe there's
> a bug in 3c59x.c network card driver. You may read the code
> and start putting some printks there, especially in error
> paths.
>
> Say, "Resetting the Tx ring pointer" comes from
> vortex_tx_timeout(struct net_device *dev), and looking at that code
> you may notice that resetting is done without disabling interrupts.
> I know nil about low-level network driver stuff, but
>
>                 printk(KERN_DEBUG "%s: Resetting the Tx ring pointer.\n",
dev->name);
>                 if (vp->cur_tx - vp->dirty_tx > 0  &&  inl(ioaddr +
DownListPtr) == 0)
>                         outl(vp->tx_ring_dma + (vp->dirty_tx %
TX_RING_SIZE) * sizeof(struct boom_tx_desc),
>                                  ioaddr + DownListPtr);
>                 if (vp->cur_tx - vp->dirty_tx < TX_RING_SIZE)
> ===>                    netif_wake_queue (dev);
>                 if (vp->drv_flags & IS_BOOMERANG)
>                         outb(PKT_BUF_SZ>>8, ioaddr + TxFreeThreshold);
>                 outw(DownUnstall, ioaddr + EL3_CMD);
>
> looks a bit strange. I'd move netif_wake_queue() below the out()s
> and encased out()s in IRQ disabled region.
>
> Or some such.
>
> Whee, this module can talk a lot, see:
> MODULE_PARM_DESC(debug, "3c59x debug level (0-6)");
>
> ;)
> --
> vda
>