Re: 2.6.20->2.6.21 - networking dies after random time

Jarek Poplawski
2007-08-07T10:08:49Z

On Mon, Aug 06, 2007 at 01:43:48PM -0400, Chuck Ebbert wrote:
> On 08/06/2007 03:03 AM, Ingo Molnar wrote:
> >
> > But, since level types don't need this retriggers too much I think
> > this "don't mask interrupts by default" idea should be rethinked:
> > is there enough gain to risk such hard to diagnose errors?
> >
> >
>
> I reverted those masking changes in Fedora and the baffling problem
> with 3Com 3C905 network adapters went away.
>
> Before, they would print:
>
> eth0: transmit timed out, tx_status 00 status e601.
> diagnostics: net 0ccc media 8880 dma 0000003a fifo 0000
> eth0: Interrupt posted but not delivered -- IRQ blocked by another device?
> Flags; bus-master 1, dirty 295757(13) current 295757(13)
> Transmit list 00000000 vs. f7150a20.
> 0: @f7150200 length 80000070 status 0c010070
> 1: @f71502a0 length 80000070 status 0c010070
> 2: @f7150340 length 8000005c status 0c01005c
>
> Now they just work, apparently...
>
> So why not just revert the change?
>

Ingo has written about such possibility. But, it would be good
to know which precisely place is to blame, as well. Since this
diagnosing takes time, I think Chuck is right, and maybe at least
this temporary patch for resend.c without this warning, should
be recomended for stables (2.6.21 and 2.6.22)?

Jarek P.