socket: change debug callbacks to pass struct nl_msg
[project/libnl-tiny.git] / include / netlink / list.h
1 /*
2 * netlink/list.h Netlink List Utilities
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) 2003-2006 Thomas Graf <tgraf@suug.ch>
10 */
11
12 #ifndef NETLINK_LIST_H_
13 #define NETLINK_LIST_H_
14
15 #include <stddef.h>
16
17 struct nl_list_head
18 {
19 struct nl_list_head * next;
20 struct nl_list_head * prev;
21 };
22
23
24 static inline void __nl_list_add(struct nl_list_head *obj,
25 struct nl_list_head *prev,
26 struct nl_list_head *next)
27 {
28 prev->next = obj;
29 obj->prev = prev;
30 next->prev = obj;
31 obj->next = next;
32 }
33
34 static inline void nl_list_add_tail(struct nl_list_head *obj,
35 struct nl_list_head *head)
36 {
37 __nl_list_add(obj, head->prev, head);
38 }
39
40 static inline void nl_list_add_head(struct nl_list_head *obj,
41 struct nl_list_head *head)
42 {
43 __nl_list_add(obj, head, head->next);
44 }
45
46 static inline void nl_list_del(struct nl_list_head *obj)
47 {
48 obj->next->prev = obj->prev;
49 obj->prev->next = obj->next;
50 }
51
52 static inline int nl_list_empty(struct nl_list_head *head)
53 {
54 return head->next == head;
55 }
56
57 #define nl_container_of(ptr, type, member) ({ \
58 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
59 (type *) ((char *) __mptr - (offsetof(type, member)));})
60
61 #define nl_list_entry(ptr, type, member) \
62 nl_container_of(ptr, type, member)
63
64 #define nl_list_at_tail(pos, head, member) \
65 ((pos)->member.next == (head))
66
67 #define nl_list_at_head(pos, head, member) \
68 ((pos)->member.prev == (head))
69
70 #define NL_LIST_HEAD(name) \
71 struct nl_list_head name = { &(name), &(name) }
72
73 #define nl_list_first_entry(head, type, member) \
74 nl_list_entry((head)->next, type, member)
75
76 #define nl_list_for_each_entry(pos, head, member) \
77 for (pos = nl_list_entry((head)->next, typeof(*pos), member); \
78 &(pos)->member != (head); \
79 (pos) = nl_list_entry((pos)->member.next, typeof(*(pos)), member))
80
81 #define nl_list_for_each_entry_safe(pos, n, head, member) \
82 for (pos = nl_list_entry((head)->next, typeof(*pos), member), \
83 n = nl_list_entry(pos->member.next, typeof(*pos), member); \
84 &(pos)->member != (head); \
85 pos = n, n = nl_list_entry(n->member.next, typeof(*n), member))
86
87 #define nl_init_list_head(head) \
88 do { (head)->next = (head); (head)->prev = (head); } while (0)
89
90 #endif