ip_mc_drop_socket  222 include/linux/igmp.h extern void ip_mc_drop_socket(struct sock *sk);
ip_mc_drop_socket  118 net/ipv4/af_inet.c extern void ip_mc_drop_socket(struct sock *sk);
ip_mc_drop_socket  421 net/ipv4/af_inet.c 		ip_mc_drop_socket(sk);