include/linux/klist.h
author Florian Westphal <fw@strlen.de>
Sun, 11 Jan 2009 20:20:11 +0100
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Port of Linux 2.6.28 for use with network simulation cradle.
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/*
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 *	klist.h - Some generic list helpers, extending struct list_head a bit.
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 *
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 *	Implementations are found in lib/klist.c
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 *
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 *
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 *	Copyright (C) 2005 Patrick Mochel
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 *
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 *	This file is rleased under the GPL v2.
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 */
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#ifndef _LINUX_KLIST_H
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#define _LINUX_KLIST_H
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#include <linux/spinlock.h>
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#include <linux/completion.h>
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#include <linux/kref.h>
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#include <linux/list.h>
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struct klist_node;
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struct klist {
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	spinlock_t		k_lock;
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	struct list_head	k_list;
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	void			(*get)(struct klist_node *);
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	void			(*put)(struct klist_node *);
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};
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#define KLIST_INIT(_name, _get, _put)					\
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	{ .k_lock	= __SPIN_LOCK_UNLOCKED(_name.k_lock),		\
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	  .k_list	= LIST_HEAD_INIT(_name.k_list),			\
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	  .get		= _get,						\
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	  .put		= _put, }
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#define DEFINE_KLIST(_name, _get, _put)					\
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	struct klist _name = KLIST_INIT(_name, _get, _put)
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extern void klist_init(struct klist *k, void (*get)(struct klist_node *),
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		       void (*put)(struct klist_node *));
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struct klist_node {
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	void			*n_klist;	/* never access directly */
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	struct list_head	n_node;
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	struct kref		n_ref;
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	struct completion	n_removed;
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};
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extern void klist_add_tail(struct klist_node *n, struct klist *k);
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extern void klist_add_head(struct klist_node *n, struct klist *k);
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extern void klist_add_after(struct klist_node *n, struct klist_node *pos);
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extern void klist_add_before(struct klist_node *n, struct klist_node *pos);
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extern void klist_del(struct klist_node *n);
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extern void klist_remove(struct klist_node *n);
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extern int klist_node_attached(struct klist_node *n);
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struct klist_iter {
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	struct klist		*i_klist;
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	struct klist_node	*i_cur;
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};
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extern void klist_iter_init(struct klist *k, struct klist_iter *i);
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extern void klist_iter_init_node(struct klist *k, struct klist_iter *i,
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				 struct klist_node *n);
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extern void klist_iter_exit(struct klist_iter *i);
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extern struct klist_node *klist_next(struct klist_iter *i);
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#endif