SunFire X2200 ilo's bge1 DOWN/UP

[YongHyeon PYUN]

On Mon, Jun 03, 2013 at 09:25:33AM +0300, Daniel Braniss wrote:
> > On Fri, May 31, 2013 at 08:24:47AM +0300, Daniel Braniss wrote:
> > > > On Thursday, May 30, 2013 2:44:35 am Daniel Braniss wrote:
> > > > > > --/04w6evG8XlLl3ft
> > > > > > Content-Type: text/x-diff; charset=us-ascii
> > > > > > Content-Disposition: attachment; filename="bge.media_sts.diff"
> > > > > > 
> > > > > > Index: sys/dev/bge/if_bge.c
> > > > > > ===================================================================
> > > > > > --- sys/dev/bge/if_bge.c	(revision 251021)
> > > > > > +++ sys/dev/bge/if_bge.c	(working copy)
> > > > > > @@ -5583,6 +5583,10 @@ bge_ifmedia_sts(struct ifnet *ifp, struct ifmediar
> > > > > >  
> > > > > >  	BGE_LOCK(sc);
> > > > > >  
> > > > > > +	if ((ifp->if_flags & IFF_UP) == 0) {
> > > > > > +		BGE_UNLOCK(sc);
> > > > > > +		return;
> > > > > > +	}
> > > > > >  	if (sc->bge_flags & BGE_FLAG_TBI) {
> > > > > >  		ifmr->ifm_status = IFM_AVALID;
> > > > > >  		ifmr->ifm_active = IFM_ETHER;
> > > > > > 
> > > > > > --/04w6evG8XlLl3ft--
> > > > > after 18hs, the logs are empty!
> > > > > it seems the patch fixes the problem.
> > > > > 
> > > > > now maybe it's time to hunt for who is randomly calling for bge_ifmedia_sts
> > > > > ...
> > > > 
> > > > It could be any number of daemons that query interface state such as an
> > > > SNMP server, ladvd, etc.
> > > > 
> > > > If you wanted help you could modify the patch so that it does something like 
> > > > this:
> > > > 
> > > #include <sys/proc.h>
> > > > 	if (/* test for IFF_UP */) {
> > > > 		BGE_UNLOCK(sc);
> > > > 		if_printf(ifp, "state queried on down interface by pid %d (%s)",
> > > ------------------------------------------------------------------------------|
> > >  add a \n
> > > > 		    curthread->td_proc->p_pid, curthread->td_proc->p_comm);
> > > > 		return;
> > > > 	}
> > > > 
> > > > -- 
> > > > John Baldwin
> > > snmpd call this several times a second, (difficult to measeure since sysolog 
> > > just says
> > > 	 last message repeated 22 times
> > > in any case, the DOWN/UP appears once every few hours, oh well.
> > > I have now stopped the snmpd daemon, maybe there is someone else ...
> > 
> > I have no idea why snmpd wants to know media status for interfaces
> > that are put into down state. The media status resolved after
> > bringing up the interface may be different one that was seen
> > before.
> > The patch also makes dhclient think driver got a valid link
> > regardless of link establishment. I guess that wouldn't be
> > issue though. I'll commit the patch after some more testing.
> > 
> > Thanks for reporting and testing!
> >
> no problem!
> 
> after more than 3 days, there were no more 'reports', so snmpd was the culprit.
> the snmpd we use is from ports, i'll try and see waht's going on ...
> 

FYI: Committed in r251481.