Re: usb/kue0 not transmitting or receiving packets

[Scott Michel <scottm@xxxxxxxx>]

Scott Michel wrote:
> Matthew Dillon wrote:
>
> >     It's really hard to track this stuff down unless we can reproduce it
> >     on our own hardware.  I don't have that laptop but I do have a     
> > VAIO PCG-F560 that might be similar enough that the USB fails the same
> >     way.  What brand of USB ethernet is it?  Is it internal or 
> > external to
> >     the laptop?

Looks like the actual bug is in bus/usb/usb_ethersubr.c:usbintr. No 
packets get queued up to usbq_rx, consequently nothing gets dequeued. 
Similarly, I suspect nothing gets queue on usbq_tx either. But the net 
effect for *all* USB ethernet devices would be that nothing appears to 
be received. This would also fix the earlier message about cue0 not 
working, since it's also a USB Ethernet device that uses netisr_queue to 
do its dirty work.

If I ifdef out the rx/tx queue looping code, which only appears to get 
called when sent a message for a received packet, things start to appear 
to work. Might have a patch after a bit more testing.