Dear Adam,
> So it's looping in the while loop all the time while polling the NIC?
> That would be strange as at some point there should be no more packets
> to process.
it doesn't process any packets. it just enters the loop and breaks at (status
& DescOwn). which is weird... and i even tried other cards but so far all
behavior is the same.
what i observed so far:
- device raises irq -> irq_interrupt() -> schedule a softirq
- __do_softirq -> napi->poll(in this case cp_rx_poll())
- cp_rx_poll fails to call cp_rx_skb()
best regards,
ayad
On Thursday, April 03, 2014 10:10:57 PM Adam Lackorzynski wrote:
> On Thu Apr 03, 2014 at 04:21:56 +0200, Ayad Mostafa wrote:
> > hi,
> >
> > well tracing along the irq handling path i ended up here
> >
> > if (status & DescOwn) {
> >
> > break;
> >
> > }
> >
> > in 8139cp.c, cp_rx_poll().
> >
> > which doesn't say much except that the "Descriptor is owned by NIC"...
>
> So it's looping in the while loop all the time while polling the NIC?
> That would be strange as at some point there should be no more packets
> to process.
>
>
> Adam
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