1258945Sroberto/* 2258945Sroberto * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC") 3258945Sroberto * Copyright (C) 1999-2002 Internet Software Consortium. 4258945Sroberto * 5258945Sroberto * Permission to use, copy, modify, and/or distribute this software for any 6258945Sroberto * purpose with or without fee is hereby granted, provided that the above 7258945Sroberto * copyright notice and this permission notice appear in all copies. 8258945Sroberto * 9258945Sroberto * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 10258945Sroberto * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 11258945Sroberto * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 12258945Sroberto * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 13258945Sroberto * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 14258945Sroberto * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 15258945Sroberto * PERFORMANCE OF THIS SOFTWARE. 16258945Sroberto */ 17258945Sroberto 18258945Sroberto/* $Id: ipv6.h,v 1.24 2007/06/19 23:47:18 tbox Exp $ */ 19258945Sroberto 20258945Sroberto#ifndef ISC_IPV6_H 21258945Sroberto#define ISC_IPV6_H 1 22258945Sroberto 23258945Sroberto/*! 24258945Sroberto * Also define LWRES_IPV6_H to keep it from being included if liblwres is 25258945Sroberto * being used, or redefinition errors will occur. 26258945Sroberto */ 27258945Sroberto#define LWRES_IPV6_H 1 28258945Sroberto 29258945Sroberto/***** 30258945Sroberto ***** Module Info 31258945Sroberto *****/ 32258945Sroberto 33258945Sroberto/*! \file isc/ipv6.h 34258945Sroberto * \brief IPv6 definitions for systems which do not support IPv6. 35258945Sroberto * 36258945Sroberto * \li MP: 37258945Sroberto * No impact. 38258945Sroberto * 39258945Sroberto * \li Reliability: 40258945Sroberto * No anticipated impact. 41258945Sroberto * 42258945Sroberto * \li Resources: 43258945Sroberto * N/A. 44258945Sroberto * 45258945Sroberto * \li Security: 46258945Sroberto * No anticipated impact. 47258945Sroberto * 48258945Sroberto * \li Standards: 49258945Sroberto * RFC2553. 50258945Sroberto */ 51258945Sroberto 52258945Sroberto/*** 53258945Sroberto *** Imports. 54258945Sroberto ***/ 55258945Sroberto 56258945Sroberto#include <isc/int.h> 57258945Sroberto#include <isc/platform.h> 58258945Sroberto 59258945Sroberto/*** 60258945Sroberto *** Types. 61258945Sroberto ***/ 62258945Sroberto 63258945Srobertostruct in6_addr { 64258945Sroberto union { 65258945Sroberto isc_uint8_t _S6_u8[16]; 66258945Sroberto isc_uint16_t _S6_u16[8]; 67258945Sroberto isc_uint32_t _S6_u32[4]; 68258945Sroberto } _S6_un; 69258945Sroberto}; 70258945Sroberto#define s6_addr _S6_un._S6_u8 71258945Sroberto#define s6_addr8 _S6_un._S6_u8 72258945Sroberto#define s6_addr16 _S6_un._S6_u16 73258945Sroberto#define s6_addr32 _S6_un._S6_u32 74258945Sroberto 75258945Sroberto#define IN6ADDR_ANY_INIT {{{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }}} 76258945Sroberto#define IN6ADDR_LOOPBACK_INIT {{{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 }}} 77258945Sroberto 78258945SrobertoLIBISC_EXTERNAL_DATA extern const struct in6_addr in6addr_any; 79258945SrobertoLIBISC_EXTERNAL_DATA extern const struct in6_addr in6addr_loopback; 80258945Sroberto 81258945Srobertostruct sockaddr_in6 { 82258945Sroberto#ifdef ISC_PLATFORM_HAVESALEN 83258945Sroberto isc_uint8_t sin6_len; 84258945Sroberto isc_uint8_t sin6_family; 85258945Sroberto#else 86258945Sroberto isc_uint16_t sin6_family; 87258945Sroberto#endif 88258945Sroberto isc_uint16_t sin6_port; 89258945Sroberto isc_uint32_t sin6_flowinfo; 90258945Sroberto struct in6_addr sin6_addr; 91258945Sroberto isc_uint32_t sin6_scope_id; 92258945Sroberto}; 93258945Sroberto 94258945Sroberto#ifdef ISC_PLATFORM_HAVESALEN 95258945Sroberto#define SIN6_LEN 1 96258945Sroberto#endif 97258945Sroberto 98258945Sroberto/*% 99258945Sroberto * Unspecified 100258945Sroberto */ 101258945Sroberto#define IN6_IS_ADDR_UNSPECIFIED(a) \ 102258945Sroberto (((a)->s6_addr32[0] == 0) && \ 103258945Sroberto ((a)->s6_addr32[1] == 0) && \ 104258945Sroberto ((a)->s6_addr32[2] == 0) && \ 105258945Sroberto ((a)->s6_addr32[3] == 0)) 106258945Sroberto 107258945Sroberto/*% 108258945Sroberto * Loopback 109258945Sroberto */ 110258945Sroberto#define IN6_IS_ADDR_LOOPBACK(a) \ 111258945Sroberto (((a)->s6_addr32[0] == 0) && \ 112258945Sroberto ((a)->s6_addr32[1] == 0) && \ 113258945Sroberto ((a)->s6_addr32[2] == 0) && \ 114258945Sroberto ((a)->s6_addr32[3] == htonl(1))) 115258945Sroberto 116258945Sroberto/*% 117258945Sroberto * IPv4 compatible 118258945Sroberto */ 119258945Sroberto#define IN6_IS_ADDR_V4COMPAT(a) \ 120258945Sroberto (((a)->s6_addr32[0] == 0) && \ 121258945Sroberto ((a)->s6_addr32[1] == 0) && \ 122258945Sroberto ((a)->s6_addr32[2] == 0) && \ 123258945Sroberto ((a)->s6_addr32[3] != 0) && \ 124258945Sroberto ((a)->s6_addr32[3] != htonl(1))) 125258945Sroberto 126258945Sroberto/*% 127258945Sroberto * Mapped 128258945Sroberto */ 129258945Sroberto#define IN6_IS_ADDR_V4MAPPED(a) \ 130258945Sroberto (((a)->s6_addr32[0] == 0) && \ 131258945Sroberto ((a)->s6_addr32[1] == 0) && \ 132258945Sroberto ((a)->s6_addr32[2] == htonl(0x0000ffff))) 133258945Sroberto 134258945Sroberto/*% 135258945Sroberto * Multicast 136258945Sroberto */ 137258945Sroberto#define IN6_IS_ADDR_MULTICAST(a) \ 138258945Sroberto ((a)->s6_addr8[0] == 0xffU) 139258945Sroberto 140258945Sroberto/*% 141258945Sroberto * Unicast link / site local. 142258945Sroberto */ 143258945Sroberto#define IN6_IS_ADDR_LINKLOCAL(a) \ 144258945Sroberto (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80)) 145258945Sroberto#define IN6_IS_ADDR_SITELOCAL(a) \ 146258945Sroberto (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0)) 147258945Sroberto 148258945Sroberto#endif /* ISC_IPV6_H */ 149