Messages in this thread |  | | Subject | Re: [RFC 2/2] xen-netback: disable multicast and use a random hw MAC address | From | Ian Campbell <> | Date | Thu, 13 Feb 2014 11:35:21 +0000 |
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On Wed, 2014-02-12 at 14:05 -0800, Luis R. Rodriguez wrote: > > I meant the PV protocol extension which allows guests (netfront) to > > register to receive multicast frames across the PV ring -- i.e. for > > multicast to work from the guests PoV. > > Not quite sure I understand, ipv6 works on guests so multicast works, > so its unclear what you mean by multicast frames across the PV ring. > Is there any code or or documents I can look at ?
xen/include/public/io/netif.h talks about 'feature-multicast-control' and XEN_NETIF_EXTRA_TYPE_MCAST_{ADD,DEL}.
Looking at it now in the absence of those then flooding is the default...
> > (maybe that was just an optimisation though and the default is to flood > > everything, it was a long time ago) > > From a networking perspective everything is being flooded as I've seen > it so far.
... which is why it works ;-)
Ian.
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