libnl  3.2.24-rc1
ematch.h
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
21 extern "C" {
22 #endif
23 
24 /* FIXME: Should be moved to the kernel header at some point */
25 #define RTNL_EMATCH_PROGID 2
26 
27 struct rtnl_ematch;
28 struct rtnl_ematch_tree;
29 
30 /**
31  * Extended Match Operations
32  */
33 struct 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 
48 extern int rtnl_ematch_register(struct rtnl_ematch_ops *);
49 extern struct rtnl_ematch_ops * rtnl_ematch_lookup_ops(int);
50 extern struct rtnl_ematch_ops * rtnl_ematch_lookup_ops_by_name(const char *);
51 
52 extern struct rtnl_ematch * rtnl_ematch_alloc(void);
53 extern int rtnl_ematch_add_child(struct rtnl_ematch *,
54  struct rtnl_ematch *);
55 extern void rtnl_ematch_unlink(struct rtnl_ematch *);
56 extern void rtnl_ematch_free(struct rtnl_ematch *);
57 
58 extern void * rtnl_ematch_data(struct rtnl_ematch *);
59 extern void rtnl_ematch_set_flags(struct rtnl_ematch *,
60  uint16_t);
61 extern void rtnl_ematch_unset_flags(struct rtnl_ematch *,
62  uint16_t);
63 extern uint16_t rtnl_ematch_get_flags(struct rtnl_ematch *);
64 extern int rtnl_ematch_set_ops(struct rtnl_ematch *,
65  struct rtnl_ematch_ops *);
66 extern int rtnl_ematch_set_kind(struct rtnl_ematch *,
67  uint16_t);
68 extern int rtnl_ematch_set_name(struct rtnl_ematch *,
69  const char *);
70 
71 extern struct rtnl_ematch_tree *rtnl_ematch_tree_alloc(uint16_t);
72 extern void rtnl_ematch_tree_free(struct rtnl_ematch_tree *);
73 extern void rtnl_ematch_tree_add(struct rtnl_ematch_tree *,
74  struct rtnl_ematch *);
75 
76 extern int rtnl_ematch_parse_attr(struct nlattr *,
77  struct rtnl_ematch_tree **);
78 extern int rtnl_ematch_fill_attr(struct nl_msg *, int,
79  struct rtnl_ematch_tree *);
80 extern void rtnl_ematch_tree_dump(struct rtnl_ematch_tree *,
81  struct nl_dump_params *);
82 
83 
84 extern int rtnl_ematch_parse_expr(const char *, char **,
85  struct rtnl_ematch_tree **);
86 
87 extern char * rtnl_ematch_offset2txt(uint8_t, uint16_t,
88  char *, size_t);
89 extern char * rtnl_ematch_opnd2txt(uint8_t, char *, size_t);
90 
91 #ifdef __cplusplus
92 }
93 #endif
94 
95 #endif