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From 04bba6707f56d8b5dd53d6b452240a634f823003 Mon Sep 17 00:00:00 2001
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From: Phil Sutter <psutter@redhat.com>
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Date: Sat, 9 Jul 2016 11:33:14 +0200
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Subject: [PATCH] list: add list_for_each_entry_reverse macro
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1342515
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Upstream Status: iproute2.git commit f1239ca1f96c7
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commit f1239ca1f96c76fbc0742ca0d0c7e87b9b15d437
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Author: Jiri Pirko <jiri@mellanox.com>
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Date: Fri Apr 15 09:51:44 2016 +0200
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list: add list_for_each_entry_reverse macro
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Signed-off-by: Jiri Pirko <jiri@mellanox.com>
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---
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include/list.h | 11 +++++++++++
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1 file changed, 11 insertions(+)
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diff --git a/include/list.h b/include/list.h
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index cdebe4d..b549c3e 100644
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--- a/include/list.h
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+++ b/include/list.h
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@@ -50,9 +50,15 @@ static inline void list_del(struct list_head *entry)
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#define list_first_entry(ptr, type, member) \
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list_entry((ptr)->next, type, member)
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+#define list_last_entry(ptr, type, member) \
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+ list_entry((ptr)->prev, type, member)
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+
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#define list_next_entry(pos, member) \
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list_entry((pos)->member.next, typeof(*(pos)), member)
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+#define list_prev_entry(pos, member) \
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+ list_entry((pos)->member.prev, typeof(*(pos)), member)
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+
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#define list_for_each_entry(pos, head, member) \
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for (pos = list_first_entry(head, typeof(*pos), member); \
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&pos->member != (head); \
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@@ -64,6 +70,11 @@ static inline void list_del(struct list_head *entry)
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&pos->member != (head); \
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pos = n, n = list_next_entry(n, member))
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+#define list_for_each_entry_reverse(pos, head, member) \
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+ for (pos = list_last_entry(head, typeof(*pos), member); \
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+ &pos->member != (head); \
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+ pos = list_prev_entry(pos, member))
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+
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struct hlist_head {
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struct hlist_node *first;
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};
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--
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1.8.3.1
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