232 #define	SLIST_FOREACH(var, head, field)					\  argument
233 	for ((var) = SLIST_FIRST((head));				\
234 	    (var);							\
235 	    (var) = SLIST_NEXT((var), field))
237 #define	SLIST_FOREACH_FROM(var, head, field)				\  argument
238 	for ((var) = ((var) ? (var) : SLIST_FIRST((head)));		\
239 	    (var);							\
240 	    (var) = SLIST_NEXT((var), field))
242 #define	SLIST_FOREACH_SAFE(var, head, field, tvar)			\  argument
243 	for ((var) = SLIST_FIRST((head));				\
244 	    (var) && ((tvar) = SLIST_NEXT((var), field), 1);		\
245 	    (var) = (tvar))
247 #define	SLIST_FOREACH_FROM_SAFE(var, head, field, tvar)			\  argument
248 	for ((var) = ((var) ? (var) : SLIST_FIRST((head)));		\
249 	    (var) && ((tvar) = SLIST_NEXT((var), field), 1);		\
250 	    (var) = (tvar))
252 #define	SLIST_FOREACH_PREVPTR(var, varp, head, field)			\  argument
254 	    ((var) = *(varp)) != NULL;					\
255 	    (varp) = &SLIST_NEXT((var), field))
351 #define	STAILQ_FOREACH(var, head, field)				\  argument
352 	for((var) = STAILQ_FIRST((head));				\
353 	   (var);							\
354 	   (var) = STAILQ_NEXT((var), field))
356 #define	STAILQ_FOREACH_FROM(var, head, field)				\  argument
357 	for ((var) = ((var) ? (var) : STAILQ_FIRST((head)));		\
358 	   (var);							\
359 	   (var) = STAILQ_NEXT((var), field))
361 #define	STAILQ_FOREACH_SAFE(var, head, field, tvar)			\  argument
362 	for ((var) = STAILQ_FIRST((head));				\
363 	    (var) && ((tvar) = STAILQ_NEXT((var), field), 1);		\
364 	    (var) = (tvar))
366 #define	STAILQ_FOREACH_FROM_SAFE(var, head, field, tvar)		\  argument
367 	for ((var) = ((var) ? (var) : STAILQ_FIRST((head)));		\
368 	    (var) && ((tvar) = STAILQ_NEXT((var), field), 1);		\
369 	    (var) = (tvar))
535 #define	LIST_FOREACH(var, head, field)					\  argument
536 	for ((var) = LIST_FIRST((head));				\
537 	    (var);							\
538 	    (var) = LIST_NEXT((var), field))
540 #define	LIST_FOREACH_FROM(var, head, field)				\  argument
541 	for ((var) = ((var) ? (var) : LIST_FIRST((head)));		\
542 	    (var);							\
543 	    (var) = LIST_NEXT((var), field))
545 #define	LIST_FOREACH_SAFE(var, head, field, tvar)			\  argument
546 	for ((var) = LIST_FIRST((head));				\
547 	    (var) && ((tvar) = LIST_NEXT((var), field), 1);		\
548 	    (var) = (tvar))
550 #define	LIST_FOREACH_FROM_SAFE(var, head, field, tvar)			\  argument
551 	for ((var) = ((var) ? (var) : LIST_FIRST((head)));		\
552 	    (var) && ((tvar) = LIST_NEXT((var), field), 1);		\
553 	    (var) = (tvar))
719 #define	TAILQ_FOREACH(var, head, field)					\  argument
720 	for ((var) = TAILQ_FIRST((head));				\
721 	    (var);							\
722 	    (var) = TAILQ_NEXT((var), field))
724 #define	TAILQ_FOREACH_FROM(var, head, field)				\  argument
725 	for ((var) = ((var) ? (var) : TAILQ_FIRST((head)));		\
726 	    (var);							\
727 	    (var) = TAILQ_NEXT((var), field))
729 #define	TAILQ_FOREACH_SAFE(var, head, field, tvar)			\  argument
730 	for ((var) = TAILQ_FIRST((head));				\
731 	    (var) && ((tvar) = TAILQ_NEXT((var), field), 1);		\
732 	    (var) = (tvar))
734 #define	TAILQ_FOREACH_FROM_SAFE(var, head, field, tvar)			\  argument
735 	for ((var) = ((var) ? (var) : TAILQ_FIRST((head)));		\
736 	    (var) && ((tvar) = TAILQ_NEXT((var), field), 1);		\
737 	    (var) = (tvar))
739 #define	TAILQ_FOREACH_REVERSE(var, head, headname, field)		\  argument
740 	for ((var) = TAILQ_LAST((head), headname);			\
741 	    (var);							\
742 	    (var) = TAILQ_PREV((var), headname, field))
744 #define	TAILQ_FOREACH_REVERSE_FROM(var, head, headname, field)		\  argument
745 	for ((var) = ((var) ? (var) : TAILQ_LAST((head), headname));	\
746 	    (var);							\
747 	    (var) = TAILQ_PREV((var), headname, field))
749 #define	TAILQ_FOREACH_REVERSE_SAFE(var, head, headname, field, tvar)	\  argument
750 	for ((var) = TAILQ_LAST((head), headname);			\
751 	    (var) && ((tvar) = TAILQ_PREV((var), headname, field), 1);	\
752 	    (var) = (tvar))
754 #define	TAILQ_FOREACH_REVERSE_FROM_SAFE(var, head, headname, field, tvar) \  argument
755 	for ((var) = ((var) ? (var) : TAILQ_LAST((head), headname));	\
756 	    (var) && ((tvar) = TAILQ_PREV((var), headname, field), 1);	\
757 	    (var) = (tvar))