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/* * Copyright (C) Internet Systems Consortium, Inc. ("ISC") * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * See the COPYRIGHT file distributed with this work for additional * information regarding copyright ownership. */ /* $Id: ipv6.h,v 1.16 2007/06/19 23:47:23 tbox Exp $ */ #ifndef LWRES_IPV6_H #define LWRES_IPV6_H 1 /***** ***** Module Info *****/ /*! \file lwres/ipv6.h * IPv6 definitions for systems which do not support IPv6. */ /*** *** Imports. ***/ #include <lwres/int.h> #include <lwres/platform.h> /*** *** Types. ***/ /*% in6_addr structure */ struct in6_addr { union { lwres_uint8_t _S6_u8[16]; lwres_uint16_t _S6_u16[8]; lwres_uint32_t _S6_u32[4]; } _S6_un; }; /*@{*/ /*% IP v6 types */ #define s6_addr _S6_un._S6_u8 #define s6_addr8 _S6_un._S6_u8 #define s6_addr16 _S6_un._S6_u16 #define s6_addr32 _S6_un._S6_u32 /*@}*/ #define IN6ADDR_ANY_INIT {{{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }}} #define IN6ADDR_LOOPBACK_INIT {{{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 }}} LIBLWRES_EXTERNAL_DATA extern const struct in6_addr in6addr_any; LIBLWRES_EXTERNAL_DATA extern const struct in6_addr in6addr_loopback; /*% used in getaddrinfo.c and getnameinfo.c */ struct sockaddr_in6 { #ifdef LWRES_PLATFORM_HAVESALEN lwres_uint8_t sin6_len; lwres_uint8_t sin6_family; #else lwres_uint16_t sin6_family; #endif lwres_uint16_t sin6_port; lwres_uint32_t sin6_flowinfo; struct in6_addr sin6_addr; lwres_uint32_t sin6_scope_id; }; #ifdef LWRES_PLATFORM_HAVESALEN #define SIN6_LEN 1 #endif /*% in6_pktinfo structure */ struct in6_pktinfo { struct in6_addr ipi6_addr; /*%< src/dst IPv6 address */ unsigned int ipi6_ifindex; /*%< send/recv interface index */ }; /*! * Unspecified IPv6 address */ #define IN6_IS_ADDR_UNSPECIFIED(a) \ (((a)->s6_addr32[0] == 0) && \ ((a)->s6_addr32[1] == 0) && \ ((a)->s6_addr32[2] == 0) && \ ((a)->s6_addr32[3] == 0)) /* * Loopback */ #define IN6_IS_ADDR_LOOPBACK(a) \ (((a)->s6_addr32[0] == 0) && \ ((a)->s6_addr32[1] == 0) && \ ((a)->s6_addr32[2] == 0) && \ ((a)->s6_addr32[3] == htonl(1))) /* * IPv4 compatible */ #define IN6_IS_ADDR_V4COMPAT(a) \ (((a)->s6_addr32[0] == 0) && \ ((a)->s6_addr32[1] == 0) && \ ((a)->s6_addr32[2] == 0) && \ ((a)->s6_addr32[3] != 0) && \ ((a)->s6_addr32[3] != htonl(1))) /* * Mapped */ #define IN6_IS_ADDR_V4MAPPED(a) \ (((a)->s6_addr32[0] == 0) && \ ((a)->s6_addr32[1] == 0) && \ ((a)->s6_addr32[2] == htonl(0x0000ffff))) #endif /* LWRES_IPV6_H */