bridge: memorize and export selected IGMP/MLD querier port

Adding bridge support to the batman-adv multicast optimization requires
batman-adv knowing about the existence of bridged-in IGMP/MLD queriers
to be able to reliably serve any multicast listener behind this same
bridge.

Signed-off-by: Linus Lüssing <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
3 files changed