in6.h revision 7dac8b8aabadbf2dcff20d3646e701728ba3777d 
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
29#ifndef _NETINET_IN6_H
30#define _NETINET_IN6_H
31
32#include <linux/in6.h>
33
34#define IN6_IS_ADDR_UNSPECIFIED(a) \
35  ((*(const uint32_t*)(&(a)->s6_addr[0]) == 0) && \
36   (*(const uint32_t*)(&(a)->s6_addr[4]) == 0) && \
37   (*(const uint32_t*)(&(a)->s6_addr[8]) == 0) && \
38   (*(const uint32_t*)(&(a)->s6_addr[12]) == 0))
39
40#define IN6_IS_ADDR_LOOPBACK(a) \
41  ((*(const uint32_t*)(&(a)->s6_addr[0]) == 0) && \
42   (*(const uint32_t*)(&(a)->s6_addr[4]) == 0) && \
43   (*(const uint32_t*)(&(a)->s6_addr[8]) == 0) && \
44   (*(const uint32_t*)(&(a)->s6_addr[12]) == ntohl(1)))
45
46#define IN6_IS_ADDR_V4COMPAT(a) \
47  ((*(const uint32_t*)(&(a)->s6_addr[0]) == 0) && \
48   (*(const uint32_t*)(&(a)->s6_addr[4]) == 0) && \
49   (*(const uint32_t*)(&(a)->s6_addr[8]) == 0) && \
50   (*(const uint32_t*)(&(a)->s6_addr[12]) != 0) && \
51   (*(const uint32_t*)(&(a)->s6_addr[12]) != ntohl(1)))
52
53#define IN6_IS_ADDR_V4MAPPED(a) \
54  ((*(const uint32_t*)(&(a)->s6_addr[0]) == 0) && \
55   (*(const uint32_t*)(&(a)->s6_addr[4]) == 0) && \
56   (*(const uint32_t*)(&(a)->s6_addr[8]) == ntohl(0x0000ffff)))
57
58#define __bionic_s6_addr(a) ((const uint8_t*)(a))
59
60#define IN6_IS_ADDR_LINKLOCAL(a) \
61  ((__bionic_s6_addr(a)[0] == 0xfe) && ((__bionic_s6_addr(a)[1] & 0xc0) == 0x80))
62
63#define IN6_IS_ADDR_SITELOCAL(a) \
64  ((__bionic_s6_addr(a)[0] == 0xfe) && ((__bionic_s6_addr(a)[1] & 0xc0) == 0xc0))
65
66#define IN6_IS_ADDR_MULTICAST(a) (__bionic_s6_addr(a)[0] == 0xff)
67
68#define IN6_IS_ADDR_ULA(a) ((__bionic_s6_addr(a)[0] & 0xfe) == 0xfc)
69
70#define IPV6_ADDR_SCOPE_NODELOCAL       0x01
71#define IPV6_ADDR_SCOPE_INTFACELOCAL    0x01
72#define IPV6_ADDR_SCOPE_LINKLOCAL       0x02
73#define IPV6_ADDR_SCOPE_SITELOCAL       0x05
74#define IPV6_ADDR_SCOPE_ORGLOCAL        0x08
75#define IPV6_ADDR_SCOPE_GLOBAL          0x0e
76
77#define IPV6_ADDR_MC_SCOPE(a) (__bionic_s6_addr(a)[1] & 0x0f)
78
79#define IN6_IS_ADDR_MC_NODELOCAL(a) \
80  (IN6_IS_ADDR_MULTICAST(a) && (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_NODELOCAL))
81#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
82  (IN6_IS_ADDR_MULTICAST(a) && (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_LINKLOCAL))
83#define IN6_IS_ADDR_MC_SITELOCAL(a) \
84  (IN6_IS_ADDR_MULTICAST(a) && (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_SITELOCAL))
85#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
86  (IN6_IS_ADDR_MULTICAST(a) && (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_ORGLOCAL))
87#define IN6_IS_ADDR_MC_GLOBAL(a) \
88  (IN6_IS_ADDR_MULTICAST(a) && (IPV6_ADDR_MC_SCOPE(a) == IPV6_ADDR_SCOPE_GLOBAL))
89
90#define IN6_ARE_ADDR_EQUAL(a, b) \
91  (memcmp(&(a)->s6_addr[0], &(b)->s6_addr[0], sizeof(struct in6_addr)) == 0)
92
93#define INET6_ADDRSTRLEN 46
94
95#define IPV6_JOIN_GROUP IPV6_ADD_MEMBERSHIP
96#define IPV6_LEAVE_GROUP IPV6_DROP_MEMBERSHIP
97
98#define IN6ADDR_ANY_INIT {{{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}}}
99#define IN6ADDR_LOOPBACK_INIT {{{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1}}}
100
101#define ipv6mr_interface ipv6mr_ifindex
102
103#endif /* _NETINET_IN6_H */
104