66 struct cache_detail {  struct
75 	int			(*cache_upcall)(struct cache_detail *,  argument
78 	void			(*cache_request)(struct cache_detail *cd,  argument
82 	int			(*cache_parse)(struct cache_detail *,  argument
86 					      struct cache_detail *cd,  argument
88 	void			(*warn_no_listener)(struct cache_detail *cd,  argument
91 	struct cache_head *	(*alloc)(void);
92 	int			(*match)(struct cache_head *orig, struct cache_head *new);
93 	void			(*init)(struct cache_head *orig, struct cache_head *new);
94 	void			(*update)(struct cache_head *orig, struct cache_head *new);
99 	time_t			flush_time;		/* flush all cache items with
105 	struct list_head	others;
106 	time_t			nextcheck;
107 	int			entries;
110 	struct list_head	queue;
112 	atomic_t		readers;		/* how many time is /chennel open */
113 	time_t			last_close;		/* if no readers, when did last close */
114 	time_t			last_warn;		/* when we last warned about no readers */
116 	union {
120 	struct net		*net;