321 struct sock {  struct
326 	struct sock_common	__sk_common;  argument
358 	socket_lock_t		sk_lock;  argument
362 	 * the per-socket spinlock held and requires low latency  argument
387 		struct socket_wq __rcu	*sk_wq;  argument
391 	struct xfrm_policy __rcu *sk_policy[2];
393 	struct dst_entry	*sk_rx_dst;
394 	struct dst_entry __rcu	*sk_dst_cache;
396 	atomic_t		sk_wmem_alloc;
397 	atomic_t		sk_omem_alloc;
398 	int			sk_sndbuf;
399 	struct sk_buff_head	sk_write_queue;
401 	unsigned int		sk_shutdown  : 2,
402 				sk_no_check_tx : 1,
403 				sk_no_check_rx : 1,
404 				sk_userlocks : 4,
405 				sk_protocol  : 8,
406 				sk_type      : 16;
409 	int			sk_wmem_queued;
410 	gfp_t			sk_allocation;
411 	u32			sk_pacing_rate; /* bytes per second */
412 	u32			sk_max_pacing_rate;
413 	netdev_features_t	sk_route_caps;
414 	netdev_features_t	sk_route_nocaps;
415 	int			sk_gso_type;
439 	struct socket		*sk_socket;  argument
453 	void			(*sk_state_change)(struct sock *sk);  argument
454 	void			(*sk_data_ready)(struct sock *sk);  argument
455 	void			(*sk_write_space)(struct sock *sk);  argument
456 	void			(*sk_error_report)(struct sock *sk);  argument
457 	int			(*sk_backlog_rcv)(struct sock *sk,  argument
459 	void                    (*sk_destruct)(struct sock *sk);  argument
1651 static inline void sk_set_socket(struct sock *sk, struct socket *sock)  in sk_set_socket()