taglinefilesource code
ip_mc406net/ipv4/ip_input.cstruct ip_mc_list *ip_mc=dev->ip_mc_list;
ip_mc409net/ipv4/ip_input.cif(ip_mc==NULL)
ip_mc414net/ipv4/ip_input.cif(ip_mc->multiaddr==iph->daddr)
ip_mc416net/ipv4/ip_input.cip_mc=ip_mc->next;