201 #define	SLIST_FOREACH(var, head, field)					\  argument
202 	for ((var) = SLIST_FIRST((head));				\
203 	    (var);							\
204 	    (var) = SLIST_NEXT((var), field))
206 #define	SLIST_FOREACH_FROM(var, head, field)				\  argument
207 	for ((var) = ((var) ? (var) : SLIST_FIRST((head)));		\
208 	    (var);							\
209 	    (var) = SLIST_NEXT((var), field))
211 #define	SLIST_FOREACH_SAFE(var, head, field, tvar)			\  argument
212 	for ((var) = SLIST_FIRST((head));				\
213 	    (var) && ((tvar) = SLIST_NEXT((var), field), 1);		\
214 	    (var) = (tvar))
216 #define	SLIST_FOREACH_FROM_SAFE(var, head, field, tvar)			\  argument
217 	for ((var) = ((var) ? (var) : SLIST_FIRST((head)));		\
218 	    (var) && ((tvar) = SLIST_NEXT((var), field), 1);		\
219 	    (var) = (tvar))
221 #define	SLIST_FOREACH_PREVPTR(var, varp, head, field)			\  argument
223 	    ((var) = *(varp)) != NULL;					\
224 	    (varp) = &SLIST_NEXT((var), field))
320 #define	STAILQ_FOREACH(var, head, field)				\  argument
321 	for((var) = STAILQ_FIRST((head));				\
322 	   (var);							\
323 	   (var) = STAILQ_NEXT((var), field))
325 #define	STAILQ_FOREACH_FROM(var, head, field)				\  argument
326 	for ((var) = ((var) ? (var) : STAILQ_FIRST((head)));		\
327 	   (var);							\
328 	   (var) = STAILQ_NEXT((var), field))
330 #define	STAILQ_FOREACH_SAFE(var, head, field, tvar)			\  argument
331 	for ((var) = STAILQ_FIRST((head));				\
332 	    (var) && ((tvar) = STAILQ_NEXT((var), field), 1);		\
333 	    (var) = (tvar))
335 #define	STAILQ_FOREACH_FROM_SAFE(var, head, field, tvar)		\  argument
336 	for ((var) = ((var) ? (var) : STAILQ_FIRST((head)));		\
337 	    (var) && ((tvar) = STAILQ_NEXT((var), field), 1);		\
338 	    (var) = (tvar))
505 #define	LIST_FOREACH(var, head, field)					\  argument
506 	for ((var) = LIST_FIRST((head));				\
507 	    (var);							\
508 	    (var) = LIST_NEXT((var), field))
510 #define	LIST_FOREACH_FROM(var, head, field)				\  argument
511 	for ((var) = ((var) ? (var) : LIST_FIRST((head)));		\
512 	    (var);							\
513 	    (var) = LIST_NEXT((var), field))
515 #define	LIST_FOREACH_SAFE(var, head, field, tvar)			\  argument
516 	for ((var) = LIST_FIRST((head));				\
517 	    (var) && ((tvar) = LIST_NEXT((var), field), 1);		\
518 	    (var) = (tvar))
520 #define	LIST_FOREACH_FROM_SAFE(var, head, field, tvar)			\  argument
521 	for ((var) = ((var) ? (var) : LIST_FIRST((head)));		\
522 	    (var) && ((tvar) = LIST_NEXT((var), field), 1);		\
523 	    (var) = (tvar))
689 #define	TAILQ_FOREACH(var, head, field)					\  argument
690 	for ((var) = TAILQ_FIRST((head));				\
691 	    (var);							\
692 	    (var) = TAILQ_NEXT((var), field))
694 #define	TAILQ_FOREACH_FROM(var, head, field)				\  argument
695 	for ((var) = ((var) ? (var) : TAILQ_FIRST((head)));		\
696 	    (var);							\
697 	    (var) = TAILQ_NEXT((var), field))
699 #define	TAILQ_FOREACH_SAFE(var, head, field, tvar)			\  argument
700 	for ((var) = TAILQ_FIRST((head));				\
701 	    (var) && ((tvar) = TAILQ_NEXT((var), field), 1);		\
702 	    (var) = (tvar))
704 #define	TAILQ_FOREACH_FROM_SAFE(var, head, field, tvar)			\  argument
705 	for ((var) = ((var) ? (var) : TAILQ_FIRST((head)));		\
706 	    (var) && ((tvar) = TAILQ_NEXT((var), field), 1);		\
707 	    (var) = (tvar))
709 #define	TAILQ_FOREACH_REVERSE(var, head, headname, field)		\  argument
710 	for ((var) = TAILQ_LAST((head), headname);			\
711 	    (var);							\
712 	    (var) = TAILQ_PREV((var), headname, field))
714 #define	TAILQ_FOREACH_REVERSE_FROM(var, head, headname, field)		\  argument
715 	for ((var) = ((var) ? (var) : TAILQ_LAST((head), headname));	\
716 	    (var);							\
717 	    (var) = TAILQ_PREV((var), headname, field))
719 #define	TAILQ_FOREACH_REVERSE_SAFE(var, head, headname, field, tvar)	\  argument
720 	for ((var) = TAILQ_LAST((head), headname);			\
721 	    (var) && ((tvar) = TAILQ_PREV((var), headname, field), 1);	\
722 	    (var) = (tvar))
724 #define	TAILQ_FOREACH_REVERSE_FROM_SAFE(var, head, headname, field, tvar) \  argument
725 	for ((var) = ((var) ? (var) : TAILQ_LAST((head), headname));	\
726 	    (var) && ((tvar) = TAILQ_PREV((var), headname, field), 1);	\
727 	    (var) = (tvar))