On Fri, 14 Feb 2014 18:59:37 -0800 "Luis R. Rodriguez" <mcg...@do-not-panic.com> wrote:
> From: "Luis R. Rodriguez" <mcg...@suse.com> > > It doesn't make sense for some interfaces to become a root bridge > at any point in time. One example is virtual backend interfaces > which rely on other entities on the bridge for actual physical > connectivity. They only provide virtual access. > > Device drivers that know they should never become part of the > root bridge have been using a trick of setting their MAC address > to a high broadcast MAC address such as FE:FF:FF:FF:FF:FF. Instead > of using these hacks lets the interfaces annotate its intent and > generalizes a solution for multiple drivers, while letting the > drivers use a random MAC address or one prefixed with a proper OUI. > This sort of hack is used by both qemu and xen for their backend > interfaces. > > Cc: Stephen Hemminger <step...@networkplumber.org> > Cc: bri...@lists.linux-foundation.org > Cc: net...@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > Signed-off-by: Luis R. Rodriguez <mcg...@suse.com> This is already supported in a more standard way via the root block flag. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
