in6.h revision c52c174e412fa6c829cf6353ce8dbebdf710511f 
1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *  * Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 *  * Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in
12 *    the documentation and/or other materials provided with the
13 *    distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28#ifndef _NETINET_IN6_H
29#define _NETINET_IN6_H
30
31#include <linux/in6.h>
32
33#define IN6_IS_ADDR_UNSPECIFIED(a)	\
34	((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&	\
35	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&	\
36	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) &&	\
37	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) == 0))
38
39#define IN6_IS_ADDR_LOOPBACK(a)		\
40	((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&	\
41	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&	\
42	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) &&	\
43	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1)))
44
45#define IN6_IS_ADDR_V4COMPAT(a)		\
46	((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&	\
47	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&	\
48	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) &&	\
49	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) != 0) &&	\
50	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[12]) != ntohl(1)))
51
52#define IN6_IS_ADDR_V4MAPPED(a)		      \
53	((*(const uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) &&	\
54	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) &&	\
55	 (*(const uint32_t *)(const void *)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
56
57#define IN6_IS_ADDR_LINKLOCAL(a)	\
58	(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
59
60#define IN6_IS_ADDR_SITELOCAL(a)	\
61	(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
62
63#define IN6_IS_ADDR_MULTICAST(a)	\
64	(((__const uint8_t *) (a))[0] == 0xff)
65
66
67#define IPV6_ADDR_SCOPE_NODELOCAL       0x01
68#define IPV6_ADDR_SCOPE_INTFACELOCAL    0x01
69#define IPV6_ADDR_SCOPE_LINKLOCAL       0x02
70#define IPV6_ADDR_SCOPE_SITELOCAL       0x05
71#define IPV6_ADDR_SCOPE_ORGLOCAL        0x08
72#define IPV6_ADDR_SCOPE_GLOBAL          0x0e
73
74#define IPV6_ADDR_MC_SCOPE(a)	\
75	((a)->s6_addr[1] & 0x0f)
76
77#define IN6_IS_ADDR_MC_LINKLOCAL(a)	\
78	(IN6_IS_ADDR_MULTICAST(a) &&  \
79	 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
80#define IN6_IS_ADDR_MC_SITELOCAL(a)     \
81	(IN6_IS_ADDR_MULTICAST(a) &&  \
82	 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
83#define IN6_IS_ADDR_MC_ORGLOCAL(a)     \
84	(IN6_IS_ADDR_MULTICAST(a) &&  \
85	 (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
86
87
88#define IN6_ARE_ADDR_EQUAL(a, b)			\
89    (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
90
91#define INET6_ADDRSTRLEN 46
92
93#define IPV6_JOIN_GROUP IPV6_ADD_MEMBERSHIP
94#define IPV6_LEAVE_GROUP IPV6_DROP_MEMBERSHIP
95
96#define IN6ADDR_ANY_INIT {{{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}}
97
98#define ipv6mr_interface ipv6mr_ifindex
99
100
101#endif /* _NETINET_IN6_H */
102