
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144

/*
 * netlink/object.c	Generic Cacheable Object
 *
 *	This library is free software; you can redistribute it and/or
 *	modify it under the terms of the GNU Lesser General Public
 *	License as published by the Free Software Foundation version 2.1
 *	of the License.
 *
 * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
 */

#ifndef NETLINK_OBJECT_H_
#define NETLINK_OBJECT_H_

#include <netlink/netlink.h>
#include <netlink/utils.h>
#include <netlink/object-api.h>

#ifdef __cplusplus
extern "C" {
#endif

#define NL_OBJ_MARK		1

struct nl_cache;
struct nl_object;
struct nl_object_ops;

struct nl_object
{
	NLHDR_COMMON
};

#define OBJ_CAST(ptr)		((struct nl_object *) (ptr))

/* General */
extern struct nl_object *	nl_object_alloc(struct nl_object_ops *);
extern int			nl_object_alloc_name(const char *,
						     struct nl_object **);
extern void			nl_object_free(struct nl_object *);
extern struct nl_object *	nl_object_clone(struct nl_object *obj);
extern void			nl_object_get(struct nl_object *);
extern void			nl_object_put(struct nl_object *);
extern void			nl_object_dump(struct nl_object *,
					       struct nl_dump_params *);
extern int			nl_object_identical(struct nl_object *,
						    struct nl_object *);
extern uint32_t			nl_object_diff(struct nl_object *,
					       struct nl_object *);
extern int			nl_object_match_filter(struct nl_object *,
						       struct nl_object *);
extern char *			nl_object_attrs2str(struct nl_object *,
						    uint32_t attrs, char *buf,
						    size_t);
/**
 * Check whether this object is used by multiple users
 * @arg obj		object to check
 * @return true or false
 */
static inline int nl_object_shared(struct nl_object *obj)
{
	return obj->ce_refcnt > 1;
}


/**
 * @name Marks
 * @{
 */

/**
 * Add mark to object
 * @arg obj		Object to mark
 */
static inline void nl_object_mark(struct nl_object *obj)
{
	obj->ce_flags |= NL_OBJ_MARK;
}

/**
 * Remove mark from object
 * @arg obj		Object to unmark
 */
static inline void nl_object_unmark(struct nl_object *obj)
{
	obj->ce_flags &= ~NL_OBJ_MARK;
}

/**
 * Return true if object is marked
 * @arg obj		Object to check
 * @return true if object is marked, otherwise false
 */
static inline int nl_object_is_marked(struct nl_object *obj)
{
	return (obj->ce_flags & NL_OBJ_MARK);
}

/** @} */

/**
 * Return list of attributes present in an object
 * @arg obj		an object
 * @arg buf		destination buffer
 * @arg len		length of destination buffer
 *
 * @return destination buffer.
 */
static inline char *nl_object_attr_list(struct nl_object *obj, char *buf, size_t len)
{
	return nl_object_attrs2str(obj, obj->ce_mask, buf, len);
}


/**
 * @name Attributes
 * @{
 */

static inline int nl_object_get_refcnt(struct nl_object *obj)
{
	return obj->ce_refcnt;
}

static inline struct nl_cache *nl_object_get_cache(struct nl_object *obj)
{
	return obj->ce_cache;
}

static inline void *		nl_object_priv(struct nl_object *obj)
{
	return obj;
}


/** @} */


#ifdef __cplusplus
}
#endif

#endif