mirror of
git://git.code.sf.net/p/xtables-addons/xtables-addons
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90 lines
2.9 KiB
C
90 lines
2.9 KiB
C
#ifndef _IP_SET_SLIST_H
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#define _IP_SET_SLIST_H
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#include <linux/stddef.h>
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#include <linux/prefetch.h>
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#include <asm/system.h>
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/*
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* Single linked lists with a single pointer.
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* Mostly useful for hash tables where the two pointer list head
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* and list node is too wasteful.
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*/
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struct slist {
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struct slist *next;
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};
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#define SLIST(name) struct slist name = { .next = NULL }
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#define INIT_SLIST(ptr) ((ptr)->next = NULL)
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#define slist_entry(ptr, type, member) container_of(ptr, type, member)
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#define slist_for_each(pos, head) \
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for (pos = (head)->next; pos && ({ prefetch(pos->next); 1; }); \
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pos = pos->next)
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#define slist_for_each_prev(prev, pos, head) \
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for (prev = head, pos = (head)->next; \
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pos && ({ prefetch(pos->next); 1; }); \
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prev = pos, pos = pos->next)
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#define slist_for_each_safe(pos, n, head) \
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for (pos = (head)->next; pos && ({ n = pos->next; 1; }); \
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pos = n)
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/**
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* slist_for_each_entry - iterate over list of given type
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* @tpos: the type * to use as a loop cursor.
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* @pos: the &struct slist to use as a loop cursor.
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* @head: the head for your list.
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* @member: the name of the slist within the struct.
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*/
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#define slist_for_each_entry(tpos, pos, head, member) \
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for (pos = (head)->next; \
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pos && ({ prefetch(pos->next); 1; }) && \
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({ tpos = slist_entry(pos, typeof(*tpos), member); 1; });\
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pos = pos->next)
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/**
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* slist_for_each_entry_continue - iterate over a hlist continuing
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* after current point
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* @tpos: the type * to use as a loop cursor.
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* @pos: the &struct slist to use as a loop cursor.
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* @member: the name of the slist within the struct.
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*/
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#define slist_for_each_entry_continue(tpos, pos, member) \
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for (pos = (pos)->next; \
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pos && ({ prefetch(pos->next); 1; }) && \
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({ tpos = slist_entry(pos, typeof(*tpos), member); 1; });\
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pos = pos->next)
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/**
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* slist_for_each_entry_from - iterate over a hlist continuing
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* from current point
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* @tpos: the type * to use as a loop cursor.
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* @pos: the &struct slist to use as a loop cursor.
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* @member: the name of the slist within the struct.
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*/
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#define slist_for_each_entry_from(tpos, pos, member) \
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for (; pos && ({ prefetch(pos->next); 1; }) && \
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({ tpos = slist_entry(pos, typeof(*tpos), member); 1; });\
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pos = pos->next)
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/**
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* slist_for_each_entry_safe - iterate over list of given type safe against
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* removal of list entry
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* @tpos: the type * to use as a loop cursor.
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* @pos: the &struct slist to use as a loop cursor.
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* @n: another &struct slist to use as temporary storage
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* @head: the head for your list.
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* @member: the name of the slist within the struct.
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*/
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#define slist_for_each_entry_safe(tpos, pos, n, head, member) \
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for (pos = (head)->next; \
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pos && ({ n = pos->next; 1; }) && \
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({ tpos = slist_entry(pos, typeof(*tpos), member); 1; });\
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pos = n)
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#endif /* _IP_SET_SLIST_H */
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