940 struct proto {  struct
941 	void			(*close)(struct sock *sk,
943 	int			(*connect)(struct sock *sk,
946 	int			(*disconnect)(struct sock *sk, int flags);
948 	struct sock *		(*accept)(struct sock *sk, int flags, int *err);
950 	int			(*ioctl)(struct sock *sk, int cmd,
952 	int			(*init)(struct sock *sk);
953 	void			(*destroy)(struct sock *sk);
954 	void			(*shutdown)(struct sock *sk, int how);
955 	int			(*setsockopt)(struct sock *sk, int level,
958 	int			(*getsockopt)(struct sock *sk, int level,
962 	int			(*compat_setsockopt)(struct sock *sk,
966 	int			(*compat_getsockopt)(struct sock *sk,
970 	int			(*compat_ioctl)(struct sock *sk,
973 	int			(*sendmsg)(struct sock *sk, struct msghdr *msg,
975 	int			(*recvmsg)(struct sock *sk, struct msghdr *msg,
978 	int			(*sendpage)(struct sock *sk, struct page *page,
980 	int			(*bind)(struct sock *sk,
983 	int			(*backlog_rcv) (struct sock *sk,
986 	void		(*release_cb)(struct sock *sk);
989 	void			(*hash)(struct sock *sk);
990 	void			(*unhash)(struct sock *sk);
991 	void			(*rehash)(struct sock *sk);
992 	int			(*get_port)(struct sock *sk, unsigned short snum);
993 	void			(*clear_sk)(struct sock *sk, int size);
997 	unsigned int		inuse_idx;
1000 	bool			(*stream_memory_free)(const struct sock *sk);
1002 	void			(*enter_memory_pressure)(struct sock *sk);
1003 	atomic_long_t		*memory_allocated;	/* Current allocated memory. */
1004 	struct percpu_counter	*sockets_allocated;	/* Current number of sockets. */
1011 	int			*memory_pressure;
1012 	long			*sysctl_mem;
1013 	int			*sysctl_wmem;
1014 	int			*sysctl_rmem;
1015 	int			max_header;
1016 	bool			no_autobind;
1018 	struct kmem_cache	*slab;
1019 	unsigned int		obj_size;
1020 	int			slab_flags;
1044 	 * protocols that implement it, from cgroups populate function.  argument
1051 	struct cg_proto		*(*proto_cgroup)(struct mem_cgroup *memcg);  argument
1118 static inline struct cg_proto *parent_cg_proto(struct proto *proto,  in parent_cg_proto()
1126 static inline struct cg_proto *parent_cg_proto(struct proto *proto,  in parent_cg_proto()