On Wed, Sep 02, 2015 at 05:58:36PM +0100, Paul Durrant wrote: > Xen's PV network protocol includes messages to add/remove ethernet > multicast addresses to/from a filter list in the backend. This allows > the frontend to request the backend only forward multicast packets > which are of interest thus preventing unnecessary noise on the shared > ring. > > The canonical netif header in git://xenbits.xen.org/xen.git specifies > the message format (two more XEN_NETIF_EXTRA_TYPEs) so the minimal > necessary changes have been pulled into include/xen/interface/io/netif.h. > > To prevent the frontend from extending the multicast filter list > arbitrarily a limit (XEN_NETBK_MCAST_MAX) has been set to 64 entries. > This limit is not specified by the protocol and so may change in future. > If the limit is reached then the next XEN_NETIF_EXTRA_TYPE_MCAST_ADD > sent by the frontend will be failed with NETIF_RSP_ERROR. > > Signed-off-by: Paul Durrant <paul.durr...@citrix.com> > Cc: Ian Campbell <ian.campb...@citrix.com> > Cc: Wei Liu <wei.l...@citrix.com>
Acked-by: Wei Liu <wei.l...@citrix.com> -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
