1135446Strhodes/*
2193149Sdougb * Copyright (C) 2004-2007  Internet Systems Consortium, Inc. ("ISC")
3135446Strhodes * Copyright (C) 2000, 2001  Internet Software Consortium.
4135446Strhodes *
5193149Sdougb * Permission to use, copy, modify, and/or distribute this software for any
6135446Strhodes * purpose with or without fee is hereby granted, provided that the above
7135446Strhodes * copyright notice and this permission notice appear in all copies.
8135446Strhodes *
9135446Strhodes * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10135446Strhodes * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11135446Strhodes * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12135446Strhodes * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13135446Strhodes * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14135446Strhodes * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15135446Strhodes * PERFORMANCE OF THIS SOFTWARE.
16135446Strhodes */
17135446Strhodes
18234010Sdougb/* $Id: ipv6.h,v 1.16 2007/06/19 23:47:23 tbox Exp $ */
19135446Strhodes
20135446Strhodes#ifndef LWRES_IPV6_H
21135446Strhodes#define LWRES_IPV6_H 1
22135446Strhodes
23135446Strhodes/*****
24135446Strhodes ***** Module Info
25135446Strhodes *****/
26135446Strhodes
27193149Sdougb/*! \file lwres/ipv6.h
28135446Strhodes * IPv6 definitions for systems which do not support IPv6.
29135446Strhodes */
30135446Strhodes
31135446Strhodes/***
32135446Strhodes *** Imports.
33135446Strhodes ***/
34135446Strhodes
35135446Strhodes#include <lwres/int.h>
36135446Strhodes#include <lwres/platform.h>
37135446Strhodes
38135446Strhodes/***
39135446Strhodes *** Types.
40135446Strhodes ***/
41135446Strhodes
42170222Sdougb/*% in6_addr structure */
43135446Strhodesstruct in6_addr {
44135446Strhodes        union {
45135446Strhodes		lwres_uint8_t	_S6_u8[16];
46135446Strhodes		lwres_uint16_t	_S6_u16[8];
47135446Strhodes		lwres_uint32_t	_S6_u32[4];
48135446Strhodes        } _S6_un;
49135446Strhodes};
50170222Sdougb/*@{*/
51170222Sdougb/*% IP v6 types */
52135446Strhodes#define s6_addr		_S6_un._S6_u8
53135446Strhodes#define s6_addr8	_S6_un._S6_u8
54135446Strhodes#define s6_addr16	_S6_un._S6_u16
55135446Strhodes#define s6_addr32	_S6_un._S6_u32
56170222Sdougb/*@}*/
57135446Strhodes
58135446Strhodes#define IN6ADDR_ANY_INIT 	{{{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }}}
59135446Strhodes#define IN6ADDR_LOOPBACK_INIT 	{{{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 }}}
60135446Strhodes
61135446StrhodesLIBLWRES_EXTERNAL_DATA extern const struct in6_addr in6addr_any;
62135446StrhodesLIBLWRES_EXTERNAL_DATA extern const struct in6_addr in6addr_loopback;
63135446Strhodes
64170222Sdougb/*% used in getaddrinfo.c and getnameinfo.c */
65135446Strhodesstruct sockaddr_in6 {
66135446Strhodes#ifdef LWRES_PLATFORM_HAVESALEN
67135446Strhodes	lwres_uint8_t		sin6_len;
68135446Strhodes	lwres_uint8_t		sin6_family;
69135446Strhodes#else
70135446Strhodes	lwres_uint16_t		sin6_family;
71135446Strhodes#endif
72135446Strhodes	lwres_uint16_t		sin6_port;
73135446Strhodes	lwres_uint32_t		sin6_flowinfo;
74135446Strhodes	struct in6_addr		sin6_addr;
75135446Strhodes	lwres_uint32_t		sin6_scope_id;
76135446Strhodes};
77135446Strhodes
78135446Strhodes#ifdef LWRES_PLATFORM_HAVESALEN
79135446Strhodes#define SIN6_LEN 1
80135446Strhodes#endif
81135446Strhodes
82170222Sdougb/*% in6_pktinfo structure */
83135446Strhodesstruct in6_pktinfo {
84170222Sdougb	struct in6_addr ipi6_addr;    /*%< src/dst IPv6 address */
85170222Sdougb	unsigned int    ipi6_ifindex; /*%< send/recv interface index */
86135446Strhodes};
87135446Strhodes
88170222Sdougb/*!
89170222Sdougb * Unspecified IPv6 address
90135446Strhodes */
91135446Strhodes#define IN6_IS_ADDR_UNSPECIFIED(a)      \
92135446Strhodes        (((a)->s6_addr32[0] == 0) &&    \
93135446Strhodes         ((a)->s6_addr32[1] == 0) &&    \
94135446Strhodes         ((a)->s6_addr32[2] == 0) &&    \
95135446Strhodes         ((a)->s6_addr32[3] == 0))
96135446Strhodes
97135446Strhodes/*
98135446Strhodes * Loopback
99135446Strhodes */
100135446Strhodes#define IN6_IS_ADDR_LOOPBACK(a)         \
101135446Strhodes        (((a)->s6_addr32[0] == 0) &&    \
102135446Strhodes         ((a)->s6_addr32[1] == 0) &&    \
103135446Strhodes         ((a)->s6_addr32[2] == 0) &&    \
104135446Strhodes         ((a)->s6_addr32[3] == htonl(1)))
105135446Strhodes
106135446Strhodes/*
107135446Strhodes * IPv4 compatible
108135446Strhodes */
109135446Strhodes#define IN6_IS_ADDR_V4COMPAT(a)         \
110135446Strhodes        (((a)->s6_addr32[0] == 0) &&    \
111135446Strhodes         ((a)->s6_addr32[1] == 0) &&    \
112135446Strhodes         ((a)->s6_addr32[2] == 0) &&    \
113135446Strhodes         ((a)->s6_addr32[3] != 0) &&    \
114135446Strhodes         ((a)->s6_addr32[3] != htonl(1)))
115135446Strhodes
116135446Strhodes/*
117135446Strhodes * Mapped
118135446Strhodes */
119135446Strhodes#define IN6_IS_ADDR_V4MAPPED(a)               \
120135446Strhodes        (((a)->s6_addr32[0] == 0) &&          \
121135446Strhodes         ((a)->s6_addr32[1] == 0) &&          \
122135446Strhodes         ((a)->s6_addr32[2] == htonl(0x0000ffff)))
123135446Strhodes
124135446Strhodes#endif /* LWRES_IPV6_H */
125