1/*
2 * netlink/route/cls/ematch.h		Extended Matches
3 *
4 *	This library is free software; you can redistribute it and/or
5 *	modify it under the terms of the GNU Lesser General Public
6 *	License as published by the Free Software Foundation version 2.1
7 *	of the License.
8 *
9 * Copyright (c) 2008-2010 Thomas Graf <tgraf@suug.ch>
10 */
11
12#ifndef NETLINK_CLS_EMATCH_H_
13#define NETLINK_CLS_EMATCH_H_
14
15#include <netlink/netlink.h>
16#include <netlink/msg.h>
17#include <netlink/route/classifier.h>
18#include <linux/pkt_cls.h>
19
20#ifdef __cplusplus
21extern "C" {
22#endif
23
24/* FIXME: Should be moved to the kernel header at some point */
25#define RTNL_EMATCH_PROGID	2
26
27struct rtnl_ematch;
28struct rtnl_ematch_tree;
29
30/**
31 * Extended Match Operations
32 */
33struct rtnl_ematch_ops
34{
35	int			eo_kind;
36	const char *		eo_name;
37	size_t			eo_minlen;
38	size_t			eo_datalen;
39
40	int		      (*eo_parse)(struct rtnl_ematch *, void *, size_t);
41	void		      (*eo_dump)(struct rtnl_ematch *,
42					 struct nl_dump_params *);
43	int		      (*eo_fill)(struct rtnl_ematch *, struct nl_msg *);
44	void		      (*eo_free)(struct rtnl_ematch *);
45	struct nl_list_head	eo_list;
46};
47
48extern int			rtnl_ematch_register(struct rtnl_ematch_ops *);
49extern struct rtnl_ematch_ops *	rtnl_ematch_lookup_ops(int);
50extern struct rtnl_ematch_ops *	rtnl_ematch_lookup_ops_by_name(const char *);
51
52extern struct rtnl_ematch *	rtnl_ematch_alloc(void);
53extern int			rtnl_ematch_add_child(struct rtnl_ematch *,
54						      struct rtnl_ematch *);
55extern void			rtnl_ematch_unlink(struct rtnl_ematch *);
56extern void			rtnl_ematch_free(struct rtnl_ematch *);
57
58extern void *			rtnl_ematch_data(struct rtnl_ematch *);
59extern void			rtnl_ematch_set_flags(struct rtnl_ematch *,
60						      uint16_t);
61extern void			rtnl_ematch_unset_flags(struct rtnl_ematch *,
62							uint16_t);
63extern uint16_t			rtnl_ematch_get_flags(struct rtnl_ematch *);
64extern int			rtnl_ematch_set_ops(struct rtnl_ematch *,
65						    struct rtnl_ematch_ops *);
66extern int			rtnl_ematch_set_kind(struct rtnl_ematch *,
67						     uint16_t);
68extern int			rtnl_ematch_set_name(struct rtnl_ematch *,
69						     const char *);
70
71extern struct rtnl_ematch_tree *rtnl_ematch_tree_alloc(uint16_t);
72extern void			rtnl_ematch_tree_free(struct rtnl_ematch_tree *);
73extern void			rtnl_ematch_tree_add(struct rtnl_ematch_tree *,
74						     struct rtnl_ematch *);
75
76extern int			rtnl_ematch_parse_attr(struct nlattr *,
77						       struct rtnl_ematch_tree **);
78extern int			rtnl_ematch_fill_attr(struct nl_msg *, int,
79						      struct rtnl_ematch_tree *);
80extern void			rtnl_ematch_tree_dump(struct rtnl_ematch_tree *,
81						      struct nl_dump_params *);
82
83
84extern int			rtnl_ematch_parse_expr(const char *, char **,
85						       struct rtnl_ematch_tree **);
86
87extern char *			rtnl_ematch_offset2txt(uint8_t, uint16_t,
88						       char *, size_t);
89extern char *			rtnl_ematch_opnd2txt(uint8_t, char *, size_t);
90
91#ifdef __cplusplus
92}
93#endif
94
95#endif
96