100 typedef	int	ng_newhook_t(node_p node, hook_p hook, const char *name);
102 typedef	int	ng_connect_t(hook_p hook);
104 typedef	int	ng_rcvdata_t(hook_p hook, item_p item);
105 typedef	int	ng_disconnect_t(hook_p hook);
106 typedef	int	ng_rcvitem (node_p node, hook_p hook, item_p item);
109  ***************** Hook Structure and Methods **************************
112  * Structure of a hook
116 	void   *hk_private;		/* node dependent ID for this hook */
117 	int	hk_flags;		/* info about this hook/link */
118 	int	hk_type;		/* tbd: hook data link type */
120 	struct	ng_node *hk_node;	/* The node this hook is attached to */
133 /* Flags for a hook */
137 #define HK_DEAD			0x0008	/* This is the dead hook.. don't free */
138 #define HK_HI_STACK		0x0010	/* Hook has hi stack usage */
139 #define HK_TO_INBOUND		0x0020	/* Hook on ntw. stack inbound path. */
142  * Public Methods for hook
145 void ng_unref_hook(hook_p hook); /* don't move this */
146 #define	_NG_HOOK_REF(hook)	refcount_acquire(&(hook)->hk_refs)  argument
147 #define _NG_HOOK_NAME(hook)	((hook)->hk_name)  argument
148 #define _NG_HOOK_UNREF(hook)	ng_unref_hook(hook)  argument
149 #define	_NG_HOOK_SET_PRIVATE(hook, val)	do {(hook)->hk_private = val;} while (0)  argument
150 #define	_NG_HOOK_SET_RCVMSG(hook, val)	do {(hook)->hk_rcvmsg = val;} while (0)  argument
151 #define	_NG_HOOK_SET_RCVDATA(hook, val)	do {(hook)->hk_rcvdata = val;} while (0)  argument
152 #define	_NG_HOOK_PRIVATE(hook)	((hook)->hk_private)  argument
153 #define _NG_HOOK_NOT_VALID(hook)	((hook)->hk_flags & HK_INVALID)  argument
154 #define _NG_HOOK_IS_VALID(hook)	(!((hook)->hk_flags & HK_INVALID))  argument
155 #define _NG_HOOK_NODE(hook)	((hook)->hk_node) /* only rvalue! */  argument
156 #define _NG_HOOK_PEER(hook)	((hook)->hk_peer) /* only rvalue! */  argument
157 #define _NG_HOOK_FORCE_WRITER(hook)				\  argument
158 		do { hook->hk_flags |= HK_FORCE_WRITER; } while (0)
159 #define _NG_HOOK_FORCE_QUEUE(hook) do { hook->hk_flags |= HK_QUEUE; } while (0)  argument
160 #define _NG_HOOK_SET_TO_INBOUND(hook)				\  argument
161 		do { hook->hk_flags |= HK_TO_INBOUND; } while (0)
162 #define _NG_HOOK_HI_STACK(hook) do { hook->hk_flags |= HK_HI_STACK; } while (0)  argument
165 #define NG_PEER_NODE(hook)	NG_HOOK_NODE(NG_HOOK_PEER(hook))  argument
166 #define NG_PEER_HOOK_NAME(hook)	NG_HOOK_NAME(NG_HOOK_PEER(hook))  argument
167 #define NG_PEER_NODE_NAME(hook)	NG_NODE_NAME(NG_PEER_NODE(hook))  argument
171 void	dumphook (hook_p hook, char *file, int line);
172 static __inline void	_chkhook(hook_p hook, char *file, int line);
173 static __inline void	_ng_hook_ref(hook_p hook, char * file, int line);
174 static __inline char *	_ng_hook_name(hook_p hook, char * file, int line);
175 static __inline void	_ng_hook_unref(hook_p hook, char * file, int line);
176 static __inline void	_ng_hook_set_private(hook_p hook,
178 static __inline void	_ng_hook_set_rcvmsg(hook_p hook,
180 static __inline void	_ng_hook_set_rcvdata(hook_p hook,
182 static __inline void *	_ng_hook_private(hook_p hook, char * file, int line);
183 static __inline int	_ng_hook_not_valid(hook_p hook, char * file, int line);
184 static __inline int	_ng_hook_is_valid(hook_p hook, char * file, int line);
185 static __inline node_p	_ng_hook_node(hook_p hook, char * file, int line);
186 static __inline hook_p	_ng_hook_peer(hook_p hook, char * file, int line);
187 static __inline void	_ng_hook_force_writer(hook_p hook, char * file,
189 static __inline void	_ng_hook_force_queue(hook_p hook, char * file,
191 static __inline void	_ng_hook_set_to_inbound(hook_p hook, char * file,
195 _chkhook(hook_p hook, char *file, int line)  in _chkhook()  argument
197 	if (hook->hk_magic != HK_MAGIC) {  in _chkhook()
199 		dumphook(hook, file, line);  in _chkhook()
201 	hook->lastline = line;  in _chkhook()
202 	hook->lastfile = file;  in _chkhook()
206 _ng_hook_ref(hook_p hook, char * file, int line)  in _ng_hook_ref()  argument
208 	_chkhook(hook, file, line);  in _ng_hook_ref()
209 	_NG_HOOK_REF(hook);  in _ng_hook_ref()
213 _ng_hook_name(hook_p hook, char * file, int line)  in _ng_hook_name()  argument
215 	_chkhook(hook, file, line);  in _ng_hook_name()
216 	return (_NG_HOOK_NAME(hook));  in _ng_hook_name()
220 _ng_hook_unref(hook_p hook, char * file, int line)  in _ng_hook_unref()  argument
222 	_chkhook(hook, file, line);  in _ng_hook_unref()
223 	_NG_HOOK_UNREF(hook);  in _ng_hook_unref()
227 _ng_hook_set_private(hook_p hook, void *val, char * file, int line)  in _ng_hook_set_private()  argument
229 	_chkhook(hook, file, line);  in _ng_hook_set_private()
230 	_NG_HOOK_SET_PRIVATE(hook, val);  in _ng_hook_set_private()
234 _ng_hook_set_rcvmsg(hook_p hook, ng_rcvmsg_t *val, char * file, int line)  in _ng_hook_set_rcvmsg()  argument
236 	_chkhook(hook, file, line);  in _ng_hook_set_rcvmsg()
237 	_NG_HOOK_SET_RCVMSG(hook, val);  in _ng_hook_set_rcvmsg()
241 _ng_hook_set_rcvdata(hook_p hook, ng_rcvdata_t *val, char * file, int line)  in _ng_hook_set_rcvdata()  argument
243 	_chkhook(hook, file, line);  in _ng_hook_set_rcvdata()
244 	_NG_HOOK_SET_RCVDATA(hook, val);  in _ng_hook_set_rcvdata()
248 _ng_hook_private(hook_p hook, char * file, int line)  in _ng_hook_private()  argument
250 	_chkhook(hook, file, line);  in _ng_hook_private()
251 	return (_NG_HOOK_PRIVATE(hook));  in _ng_hook_private()
255 _ng_hook_not_valid(hook_p hook, char * file, int line)  in _ng_hook_not_valid()  argument
257 	_chkhook(hook, file, line);  in _ng_hook_not_valid()
258 	return (_NG_HOOK_NOT_VALID(hook));  in _ng_hook_not_valid()
262 _ng_hook_is_valid(hook_p hook, char * file, int line)  in _ng_hook_is_valid()  argument
264 	_chkhook(hook, file, line);  in _ng_hook_is_valid()
265 	return (_NG_HOOK_IS_VALID(hook));  in _ng_hook_is_valid()
269 _ng_hook_node(hook_p hook, char * file, int line)  in _ng_hook_node()  argument
271 	_chkhook(hook, file, line);  in _ng_hook_node()
272 	return (_NG_HOOK_NODE(hook));  in _ng_hook_node()
276 _ng_hook_peer(hook_p hook, char * file, int line)  in _ng_hook_peer()  argument
278 	_chkhook(hook, file, line);  in _ng_hook_peer()
279 	return (_NG_HOOK_PEER(hook));  in _ng_hook_peer()
283 _ng_hook_force_writer(hook_p hook, char * file, int line)  in _ng_hook_force_writer()  argument
285 	_chkhook(hook, file, line);  in _ng_hook_force_writer()
286 	_NG_HOOK_FORCE_WRITER(hook);  in _ng_hook_force_writer()
290 _ng_hook_force_queue(hook_p hook, char * file, int line)  in _ng_hook_force_queue()  argument
292 	_chkhook(hook, file, line);  in _ng_hook_force_queue()
293 	_NG_HOOK_FORCE_QUEUE(hook);  in _ng_hook_force_queue()
297 _ng_hook_set_to_inbound(hook_p hook, char * file, int line)  in _ng_hook_set_to_inbound()  argument
299 	_chkhook(hook, file, line);  in _ng_hook_set_to_inbound()
300 	_NG_HOOK_SET_TO_INBOUND(hook);  in _ng_hook_set_to_inbound()
304 _ng_hook_hi_stack(hook_p hook, char * file, int line)  in _ng_hook_hi_stack()  argument
306 	_chkhook(hook, file, line);  in _ng_hook_hi_stack()
307 	_NG_HOOK_HI_STACK(hook);  in _ng_hook_hi_stack()
310 #define	NG_HOOK_REF(hook)		_ng_hook_ref(hook, _NN_)  argument
311 #define NG_HOOK_NAME(hook)		_ng_hook_name(hook, _NN_)  argument
312 #define NG_HOOK_UNREF(hook)		_ng_hook_unref(hook, _NN_)  argument
313 #define	NG_HOOK_SET_PRIVATE(hook, val)	_ng_hook_set_private(hook, val, _NN_)  argument
314 #define	NG_HOOK_SET_RCVMSG(hook, val)	_ng_hook_set_rcvmsg(hook, val, _NN_)  argument
315 #define	NG_HOOK_SET_RCVDATA(hook, val)	_ng_hook_set_rcvdata(hook, val, _NN_)  argument
316 #define	NG_HOOK_PRIVATE(hook)		_ng_hook_private(hook, _NN_)  argument
317 #define NG_HOOK_NOT_VALID(hook)		_ng_hook_not_valid(hook, _NN_)  argument
318 #define NG_HOOK_IS_VALID(hook)		_ng_hook_is_valid(hook, _NN_)  argument
319 #define NG_HOOK_NODE(hook)		_ng_hook_node(hook, _NN_)  argument
320 #define NG_HOOK_PEER(hook)		_ng_hook_peer(hook, _NN_)  argument
321 #define NG_HOOK_FORCE_WRITER(hook)	_ng_hook_force_writer(hook, _NN_)  argument
322 #define NG_HOOK_FORCE_QUEUE(hook)	_ng_hook_force_queue(hook, _NN_)  argument
323 #define NG_HOOK_SET_TO_INBOUND(hook)	_ng_hook_set_to_inbound(hook, _NN_)  argument
324 #define NG_HOOK_HI_STACK(hook)		_ng_hook_hi_stack(hook, _NN_)  argument
328 #define	NG_HOOK_REF(hook)		_NG_HOOK_REF(hook)  argument
329 #define NG_HOOK_NAME(hook)		_NG_HOOK_NAME(hook)  argument
330 #define NG_HOOK_UNREF(hook)		_NG_HOOK_UNREF(hook)  argument
331 #define	NG_HOOK_SET_PRIVATE(hook, val)	_NG_HOOK_SET_PRIVATE(hook, val)  argument
332 #define	NG_HOOK_SET_RCVMSG(hook, val)	_NG_HOOK_SET_RCVMSG(hook, val)  argument
333 #define	NG_HOOK_SET_RCVDATA(hook, val)	_NG_HOOK_SET_RCVDATA(hook, val)  argument
334 #define	NG_HOOK_PRIVATE(hook)		_NG_HOOK_PRIVATE(hook)  argument
335 #define NG_HOOK_NOT_VALID(hook)		_NG_HOOK_NOT_VALID(hook)  argument
336 #define NG_HOOK_IS_VALID(hook)		_NG_HOOK_IS_VALID(hook)  argument
337 #define NG_HOOK_NODE(hook)		_NG_HOOK_NODE(hook)  argument
338 #define NG_HOOK_PEER(hook)		_NG_HOOK_PEER(hook)  argument
339 #define NG_HOOK_FORCE_WRITER(hook)	_NG_HOOK_FORCE_WRITER(hook)  argument
340 #define NG_HOOK_FORCE_QUEUE(hook)	_NG_HOOK_FORCE_QUEUE(hook)  argument
341 #define NG_HOOK_SET_TO_INBOUND(hook)	_NG_HOOK_SET_TO_INBOUND(hook)  argument
342 #define NG_HOOK_HI_STACK(hook)		_NG_HOOK_HI_STACK(hook)  argument
424  * The hook iterator.
426  * hook attached to the node. If the function returns 0, then the
427  * iterator will stop and return a pointer to the hook that returned 0.
429 typedef	int	ng_fn_eachhook(hook_p hook, void* arg);
618 typedef	void	ng_item_fn(node_p node, hook_p hook, void *arg1, int arg2);
619 typedef	int	ng_item_fn2(node_p node, struct ng_item *item, hook_p hook);
631 	hook_p	el_hook; /* Entering hook. Optional in Control messages */
880 #define NG_FWD_ITEM_HOOK_FLAGS(error, item, hook, flags)		\  argument
883 		    ng_address_hook(NULL, (item), (hook), NG_NOFLAGS);	\
890 #define	NG_FWD_ITEM_HOOK(error, item, hook)	\  argument
891 		NG_FWD_ITEM_HOOK_FLAGS(error, item, hook, NG_NOFLAGS)
900 #define NG_FWD_NEW_DATA_FLAGS(error, item, hook, m, flags)		\  argument
904 		NG_FWD_ITEM_HOOK_FLAGS(error, item, hook, flags);	\
906 #define	NG_FWD_NEW_DATA(error, item, hook, m)	\  argument
907 		NG_FWD_NEW_DATA_FLAGS(error, item, hook, m, NG_NOFLAGS)
913 #define NG_SEND_DATA_FLAGS(error, hook, m, flags)			\  argument
917 			NG_FWD_ITEM_HOOK_FLAGS(error, _item, hook, flags);\
924 #define NG_SEND_DATA_ONLY(error, hook, m)	\  argument
925 		NG_SEND_DATA_FLAGS(error, hook, m, NG_NOFLAGS)
927 #define	NG_SEND_DATA(error, hook, m, x)	\  argument
928 		NG_SEND_DATA_FLAGS(error, hook, m, NG_NOFLAGS)
950 #define NG_SEND_MSG_HOOK(error, here, msg, hook, retaddr)		\  argument
959 					(hook), (retaddr))) == 0) {	\
999  * Redirect the message to the next hop using the given hook.
1003 #define NG_FWD_MSG_HOOK(error, here, item, hook, retaddr)		\  argument
1006 					(hook), (retaddr))) == 0) {	\
1060  * the flags word of the peer (receiving) hook. The dequeuing mechanism will
1076 	ng_newhook_t	*newhook;	/* first notification of new hook */
1078 	ng_connect_t	*connect;	/* final notification of new hook */
1132 int	ng_address_hook(node_p here, item_p item, hook_p hook, ng_ID_t retaddr);
1144 item_p	ng_package_msg_self(node_p here, hook_p hook, struct ng_mesg *msg);
1146 int	ng_rmhook_self(hook_p hook);	/* if a node wants to kill a hook */
1150 int 	ng_send_fn(node_p node, hook_p hook, ng_item_fn *fn, void *arg1,
1152 int 	ng_send_fn1(node_p node, hook_p hook, ng_item_fn *fn, void *arg1,
1154 int 	ng_send_fn2(node_p node, hook_p hook, item_p pitem, ng_item_fn2 *fn,
1158 int	ng_callout(struct callout *c, node_p node, hook_p hook, int ticks,