#ifndef _TCP_MEMCG_H
  #define _TCP_MEMCG_H
  
  struct cg_proto *tcp_proto_cgroup(struct mem_cgroup *memcg);
  int tcp_init_cgroup(struct mem_cgroup *memcg, struct cgroup_subsys *ss);
  void tcp_destroy_cgroup(struct mem_cgroup *memcg);
  #endif /* _TCP_MEMCG_H */