netdev - RE: Multicast problem

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Date:	Tue, 16 Oct 2007 23:15:06 +0200
From:	"Joakim Tjernlund" <joakim.tjernlund@...nsmode.se>
To:	"'Stephen Hemminger'" <shemminger@...ux-foundation.org>
Cc:	"'David Stevens'" <dlstevens@...ibm.com>,
	"'Netdev'" <netdev@...r.kernel.org>,
	"Li Yang" <LeoLi@...escale.com>
Subject: RE: Multicast problem

 
> > > 
> > > OK, so from all this and earlier mail I think that the 
> > device driver don't
> > > receive multicast pkgs. Tomorrow I will try the real OSPF 
> > test case with
> > > promisc mode enabled, se if that works. If so, it means there is
> > > a bug in the drivers(ucc_geth.c) set_multicast_list() function.
> > > 
> > > Thank you for helping me to narrow it down.
> > > 
> > >  Jocke
> > 
> > You can test multicast easily standalone with iperf:
> > http://dast.nlanr.net/Projects/Iperf/#multicast
> > 
> 
> Thanks, will give it a try.
> 

Managed to cross compile iperf and ran the test. I need promisc mode
on the ethernet i/f to receive anything from that test so I guess this
confirms it, the set_multicast_list() in ucc_geth driver is broken.

Leo, forgot to CC you earlier. Seem like the multicast function
is somewhat buggy.

 Jocke


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