Group Management API / Protocols Issue

• Per-interface multicast list is inefficient

• • Single linked list...
  • This list is scanned (at least) per once per multicast packet!
  • • net/ipv6/ip6_input.c: ip6_mc_input()
    • • check if we should accept the packet (rough filter)
    • net/ipv6/ip6_input.c: ip6_input_finish()
    • • check if we should deliver the packet to the upper layer.
    • net/ipv6/ip6_output.c: ip6_output2()
    • • check if we should loop'ed back the outgoing packet for our own listener(s).