Re: NetBSD xen dom0 kernel panic

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Thu, Mar 19, 2009 at 10:34:48PM -0400, Peter wrote:
> Thanks, I had wondered at the name.  I saw it in rumpkern, but now I
> see there's another pool_get.  My mistake.
> 
> I'm curious though whether the bridge stuff was recently broken or if
> it ever worked?

It works fine on netbsd-3 and netbsd-4 with ipf (I've several servers using
it). It works fine on netbsd-5 without ipf, but I've not tested it seriously
with ipf yet.


> I assume that the bridge should be called from
> netinet/ip_output

No because it's a ethernet bridge; it can carry packets which are
not IP.

> ethernet has the spanning tree code.  So, again please correct me if
> I'm wrong, I'm quite new to this, but I assume that no one has fixed
> the bridge code because the spanning tree stuff has to be made more
> generic and that's probably hairier than shifting a few calls around.
> So someone is saving the bridge code for after the spanning tree code
> is changed to allow a full capability bridge.

No, it's in this state because it used to work fine, and the issue has
just been discovered.

> 
> Would it be possible to move the bridge calls into ip_output but

No, see above. A bridge is not a IP device.

-- 
Manuel Bouyer, LIP6, Universite Paris VI.           
Manuel.Bouyer%lip6.fr@localhost
     NetBSD: 26 ans d'experience feront toujours la difference
--