From f1239ca1f96c76fbc0742ca0d0c7e87b9b15d437 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Fri, 15 Apr 2016 09:51:44 +0200 Subject: [PATCH] list: add list_for_each_entry_reverse macro Signed-off-by: Jiri Pirko --- include/list.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/include/list.h b/include/list.h index cdebe4de..b549c3ec 100644 --- a/include/list.h +++ b/include/list.h @@ -50,9 +50,15 @@ static inline void list_del(struct list_head *entry) #define list_first_entry(ptr, type, member) \ list_entry((ptr)->next, type, member) +#define list_last_entry(ptr, type, member) \ + list_entry((ptr)->prev, type, member) + #define list_next_entry(pos, member) \ list_entry((pos)->member.next, typeof(*(pos)), member) +#define list_prev_entry(pos, member) \ + list_entry((pos)->member.prev, typeof(*(pos)), member) + #define list_for_each_entry(pos, head, member) \ for (pos = list_first_entry(head, typeof(*pos), member); \ &pos->member != (head); \ @@ -64,6 +70,11 @@ static inline void list_del(struct list_head *entry) &pos->member != (head); \ pos = n, n = list_next_entry(n, member)) +#define list_for_each_entry_reverse(pos, head, member) \ + for (pos = list_last_entry(head, typeof(*pos), member); \ + &pos->member != (head); \ + pos = list_prev_entry(pos, member)) + struct hlist_head { struct hlist_node *first; };