aboutsummaryrefslogtreecommitdiffstats
path: root/net/netlabel/netlabel_addrlist.h
diff options
context:
space:
mode:
Diffstat (limited to 'net/netlabel/netlabel_addrlist.h')
-rw-r--r--net/netlabel/netlabel_addrlist.h174
1 files changed, 174 insertions, 0 deletions
diff --git a/net/netlabel/netlabel_addrlist.h b/net/netlabel/netlabel_addrlist.h
new file mode 100644
index 000000000000..0c41df057fa8
--- /dev/null
+++ b/net/netlabel/netlabel_addrlist.h
@@ -0,0 +1,174 @@
1/*
2 * NetLabel Network Address Lists
3 *
4 * This file contains network address list functions used to manage ordered
5 * lists of network addresses for use by the NetLabel subsystem. The NetLabel
6 * system manages static and dynamic label mappings for network protocols such
7 * as CIPSO and RIPSO.
8 *
9 * Author: Paul Moore <paul.moore@hp.com>
10 *
11 */
12
13/*
14 * (c) Copyright Hewlett-Packard Development Company, L.P., 2008
15 *
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation; either version 2 of the License, or
19 * (at your option) any later version.
20 *
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
24 * the GNU General Public License for more details.
25 *
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 *
30 */
31
32#ifndef _NETLABEL_ADDRLIST_H
33#define _NETLABEL_ADDRLIST_H
34
35#include <linux/types.h>
36#include <linux/rcupdate.h>
37#include <linux/list.h>
38#include <linux/in6.h>
39
40/**
41 * struct netlbl_af4list - NetLabel IPv4 address list
42 * @addr: IPv4 address
43 * @mask: IPv4 address mask
44 * @valid: valid flag
45 * @list: list structure, used internally
46 */
47struct netlbl_af4list {
48 __be32 addr;
49 __be32 mask;
50
51 u32 valid;
52 struct list_head list;
53};
54
55/**
56 * struct netlbl_af6list - NetLabel IPv6 address list
57 * @addr: IPv6 address
58 * @mask: IPv6 address mask
59 * @valid: valid flag
60 * @list: list structure, used internally
61 */
62struct netlbl_af6list {
63 struct in6_addr addr;
64 struct in6_addr mask;
65
66 u32 valid;
67 struct list_head list;
68};
69
70#define __af4list_entry(ptr) container_of(ptr, struct netlbl_af4list, list)
71
72static inline struct netlbl_af4list *__af4list_valid(struct list_head *s,
73 struct list_head *h)
74{
75 struct list_head *i = s;
76 struct netlbl_af4list *n = __af4list_entry(s);
77 while (i != h && !n->valid) {
78 i = i->next;
79 n = __af4list_entry(i);
80 }
81 return n;
82}
83
84static inline struct netlbl_af4list *__af4list_valid_rcu(struct list_head *s,
85 struct list_head *h)
86{
87 struct list_head *i = s;
88 struct netlbl_af4list *n = __af4list_entry(s);
89 while (i != h && !n->valid) {
90 i = rcu_dereference(i->next);
91 n = __af4list_entry(i);
92 }
93 return n;
94}
95
96#define netlbl_af4list_foreach(iter, head) \
97 for (iter = __af4list_valid((head)->next, head); \
98 prefetch(iter->list.next), &iter->list != (head); \
99 iter = __af4list_valid(iter->list.next, head))
100
101#define netlbl_af4list_foreach_rcu(iter, head) \
102 for (iter = __af4list_valid_rcu((head)->next, head); \
103 prefetch(iter->list.next), &iter->list != (head); \
104 iter = __af4list_valid_rcu(iter->list.next, head))
105
106#define netlbl_af4list_foreach_safe(iter, tmp, head) \
107 for (iter = __af4list_valid((head)->next, head), \
108 tmp = __af4list_valid(iter->list.next, head); \
109 &iter->list != (head); \
110 iter = tmp, tmp = __af4list_valid(iter->list.next, head))
111
112int netlbl_af4list_add(struct netlbl_af4list *entry,
113 struct list_head *head);
114struct netlbl_af4list *netlbl_af4list_remove(__be32 addr, __be32 mask,
115 struct list_head *head);
116void netlbl_af4list_remove_entry(struct netlbl_af4list *entry);
117struct netlbl_af4list *netlbl_af4list_search(__be32 addr,
118 struct list_head *head);
119
120#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
121
122#define __af6list_entry(ptr) container_of(ptr, struct netlbl_af6list, list)
123
124static inline struct netlbl_af6list *__af6list_valid(struct list_head *s,
125 struct list_head *h)
126{
127 struct list_head *i = s;
128 struct netlbl_af6list *n = __af6list_entry(s);
129 while (i != h && !n->valid) {
130 i = i->next;
131 n = __af6list_entry(i);
132 }
133 return n;
134}
135
136static inline struct netlbl_af6list *__af6list_valid_rcu(struct list_head *s,
137 struct list_head *h)
138{
139 struct list_head *i = s;
140 struct netlbl_af6list *n = __af6list_entry(s);
141 while (i != h && !n->valid) {
142 i = rcu_dereference(i->next);
143 n = __af6list_entry(i);
144 }
145 return n;
146}
147
148#define netlbl_af6list_foreach(iter, head) \
149 for (iter = __af6list_valid((head)->next, head); \
150 prefetch(iter->list.next), &iter->list != (head); \
151 iter = __af6list_valid(iter->list.next, head))
152
153#define netlbl_af6list_foreach_rcu(iter, head) \
154 for (iter = __af6list_valid_rcu((head)->next, head); \
155 prefetch(iter->list.next), &iter->list != (head); \
156 iter = __af6list_valid_rcu(iter->list.next, head))
157
158#define netlbl_af6list_foreach_safe(iter, tmp, head) \
159 for (iter = __af6list_valid((head)->next, head), \
160 tmp = __af6list_valid(iter->list.next, head); \
161 &iter->list != (head); \
162 iter = tmp, tmp = __af6list_valid(iter->list.next, head))
163
164int netlbl_af6list_add(struct netlbl_af6list *entry,
165 struct list_head *head);
166struct netlbl_af6list *netlbl_af6list_remove(const struct in6_addr *addr,
167 const struct in6_addr *mask,
168 struct list_head *head);
169void netlbl_af6list_remove_entry(struct netlbl_af6list *entry);
170struct netlbl_af6list *netlbl_af6list_search(const struct in6_addr *addr,
171 struct list_head *head);
172#endif /* IPV6 */
173
174#endif
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-15 19:29:18 -0500