• Linus Lüssing's avatar
    gluon-mesh-batman-adv: reenable batman-adv multicast optimizations · 288daf5a
    Linus Lüssing authored
    With batman-adv 2020.4 and the according backports to batman-adv v2019.2
    several more bugs were found and fixed regarding the batman-adv
    multicast optimizations feature.
    Also a "wakeup-call" feature was added to the Linux bridge IGMP/MLD
    snooping code in Gluon to work around issues with Android devices.
    With batman-adv now at v2019.2, multicast-to-multi-unicasts conversion
    is supported, too. Which means that even if there are a few outdated nodes
    these and all other recipients will be served multicast packets via unicast,
    too, as long as the sum of receiving nodes does not exceed the multicast
    fanout setting (default: 16). If is exceeded, then batman-adv will revert
    back to broadcast flooding automatically.
    Long story short, with all these extra measures in place, let's reenable
    the batman-adv multicast optimizations to reduce the layer 2 overhead
    and in preparation for multicast applications in the future.
    The default is enabled for this feature anyway, so removing the
    "batctl multicast_mode 0" overwrite is sufficient.
    Signed-off-by: default avatarLinus Lüssing <linus.luessing@c0d3.blue>