libnl  3.6.0
ematch.h
1 /* SPDX-License-Identifier: LGPL-2.1-only */
2 /*
3  * Copyright (c) 2008-2010 Thomas Graf <tgraf@suug.ch>
4  */
5 
6 #ifndef NETLINK_CLS_EMATCH_H_
7 #define NETLINK_CLS_EMATCH_H_
8 
9 #include <netlink/netlink.h>
10 #include <netlink/msg.h>
11 #include <netlink/route/classifier.h>
12 #include <linux/pkt_cls.h>
13 
14 #ifdef __cplusplus
15 extern "C" {
16 #endif
17 
18 /* FIXME: Should be moved to the kernel header at some point */
19 #define RTNL_EMATCH_PROGID 2
20 
21 struct rtnl_ematch;
22 struct rtnl_ematch_tree;
23 
24 /**
25  * Extended Match Operations
26  */
28 {
29  int eo_kind;
30  const char * eo_name;
31  size_t eo_minlen;
32  size_t eo_datalen;
33 
34  int (*eo_parse)(struct rtnl_ematch *, void *, size_t);
35  void (*eo_dump)(struct rtnl_ematch *,
36  struct nl_dump_params *);
37  int (*eo_fill)(struct rtnl_ematch *, struct nl_msg *);
38  void (*eo_free)(struct rtnl_ematch *);
39  struct nl_list_head eo_list;
40 };
41 
42 extern int rtnl_ematch_register(struct rtnl_ematch_ops *);
43 extern struct rtnl_ematch_ops * rtnl_ematch_lookup_ops(int);
44 extern struct rtnl_ematch_ops * rtnl_ematch_lookup_ops_by_name(const char *);
45 
46 extern struct rtnl_ematch * rtnl_ematch_alloc(void);
47 extern int rtnl_ematch_add_child(struct rtnl_ematch *,
48  struct rtnl_ematch *);
49 extern void rtnl_ematch_unlink(struct rtnl_ematch *);
50 extern void rtnl_ematch_free(struct rtnl_ematch *);
51 
52 extern void * rtnl_ematch_data(struct rtnl_ematch *);
53 extern void rtnl_ematch_set_flags(struct rtnl_ematch *,
54  uint16_t);
55 extern void rtnl_ematch_unset_flags(struct rtnl_ematch *,
56  uint16_t);
57 extern uint16_t rtnl_ematch_get_flags(struct rtnl_ematch *);
58 extern int rtnl_ematch_set_ops(struct rtnl_ematch *,
59  struct rtnl_ematch_ops *);
60 extern int rtnl_ematch_set_kind(struct rtnl_ematch *,
61  uint16_t);
62 extern int rtnl_ematch_set_name(struct rtnl_ematch *,
63  const char *);
64 
65 extern struct rtnl_ematch_tree *rtnl_ematch_tree_alloc(uint16_t);
66 extern void rtnl_ematch_tree_free(struct rtnl_ematch_tree *);
67 extern void rtnl_ematch_tree_add(struct rtnl_ematch_tree *,
68  struct rtnl_ematch *);
69 
70 extern struct rtnl_ematch_tree *rtnl_ematch_tree_clone(struct rtnl_ematch_tree *);
71 
72 extern int rtnl_ematch_parse_attr(struct nlattr *,
73  struct rtnl_ematch_tree **);
74 extern int rtnl_ematch_fill_attr(struct nl_msg *, int,
75  struct rtnl_ematch_tree *);
76 extern void rtnl_ematch_tree_dump(struct rtnl_ematch_tree *,
77  struct nl_dump_params *);
78 
79 
80 extern int rtnl_ematch_parse_expr(const char *, char **,
81  struct rtnl_ematch_tree **);
82 
83 extern char * rtnl_ematch_offset2txt(uint8_t, uint16_t,
84  char *, size_t);
85 extern char * rtnl_ematch_opnd2txt(uint8_t, char *, size_t);
86 
87 #ifdef __cplusplus
88 }
89 #endif
90 
91 #endif
struct rtnl_ematch_tree * rtnl_ematch_tree_clone(struct rtnl_ematch_tree *)
Clone ematch tree object.
Definition: ematch.c:328
void rtnl_ematch_tree_add(struct rtnl_ematch_tree *, struct rtnl_ematch *)
Add ematch object to the end of the ematch tree.
Definition: ematch.c:348
void rtnl_ematch_tree_free(struct rtnl_ematch_tree *)
Free ematch tree object.
Definition: ematch.c:274
int rtnl_ematch_register(struct rtnl_ematch_ops *)
Register ematch module.
Definition: ematch.c:40
int rtnl_ematch_parse_attr(struct nlattr *, struct rtnl_ematch_tree **)
Parse ematch netlink attributes.
Definition: ematch.c:392
struct rtnl_ematch_ops * rtnl_ematch_lookup_ops(int)
Lookup ematch module by identification number.
Definition: ematch.c:60
void rtnl_ematch_unlink(struct rtnl_ematch *)
Remove ematch from the list of ematches it is linked to.
Definition: ematch.c:143
int rtnl_ematch_add_child(struct rtnl_ematch *, struct rtnl_ematch *)
Add ematch to the end of the parent's list of children.
Definition: ematch.c:125
struct rtnl_ematch_ops * rtnl_ematch_lookup_ops_by_name(const char *)
Lookup ematch module by name.
Definition: ematch.c:79
struct rtnl_ematch_tree * rtnl_ematch_tree_alloc(uint16_t)
Allocate ematch tree object.
Definition: ematch.c:242
struct rtnl_ematch * rtnl_ematch_alloc(void)
Allocate ematch object.
Definition: ematch.c:103
Dumping parameters.
Definition: types.h:28
Extended Match Operations.
Definition: ematch.h:28