156 lines
3.7 KiB
C
156 lines
3.7 KiB
C
/* $NetBSD: ipv6.h,v 1.2 2003/12/04 16:23:36 drochner Exp $ */
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/*
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* Copyright (C) 1999-2001 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
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* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
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* INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
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* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* Id: ipv6.h,v 1.19 2002/04/03 06:38:33 marka Exp */
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#ifndef ISC_IPV6_H
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#define ISC_IPV6_H 1
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/*
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* Also define LWRES_IPV6_H to keep it from being included if liblwres is
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* being used, or redefinition errors will occur.
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*/
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#define LWRES_IPV6_H 1
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/*****
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***** Module Info
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*****/
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/*
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* IPv6 definitions for systems which do not support IPv6.
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*
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* MP:
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* No impact.
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*
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* Reliability:
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* No anticipated impact.
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*
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* Resources:
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* N/A.
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*
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* Security:
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* No anticipated impact.
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*
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* Standards:
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* RFC 2553.
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*/
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/***
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*** Imports.
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***/
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#include <isc/int.h>
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#include <isc/platform.h>
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/*
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* We probably don't need this on NTP
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*/
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#ifdef ISC_ONLY_IPV6
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/***
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*** Types.
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***/
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struct in6_addr {
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union {
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isc_uint8_t _S6_u8[16];
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isc_uint16_t _S6_u16[8];
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isc_uint32_t _S6_u32[4];
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} _S6_un;
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};
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#define s6_addr _S6_un._S6_u8
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#define s6_addr8 _S6_un._S6_u8
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#define s6_addr16 _S6_un._S6_u16
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#define s6_addr32 _S6_un._S6_u32
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#define IN6ADDR_ANY_INIT {{{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }}}
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#define IN6ADDR_LOOPBACK_INIT {{{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 }}}
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LIBISC_EXTERNAL_DATA extern const struct in6_addr in6addr_any;
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LIBISC_EXTERNAL_DATA extern const struct in6_addr in6addr_loopback;
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struct sockaddr_in6 {
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#ifdef ISC_PLATFORM_HAVESALEN
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isc_uint8_t sin6_len;
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isc_uint8_t sin6_family;
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#else
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isc_uint16_t sin6_family;
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#endif
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isc_uint16_t sin6_port;
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isc_uint32_t sin6_flowinfo;
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struct in6_addr sin6_addr;
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isc_uint32_t sin6_scope_id;
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};
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#ifdef ISC_PLATFORM_HAVESALEN
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#define SIN6_LEN 1
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#endif
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/*
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* Unspecified
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*/
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#define IN6_IS_ADDR_UNSPECIFIED(a) \
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(((a)->s6_addr32[0] == 0) && \
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((a)->s6_addr32[1] == 0) && \
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((a)->s6_addr32[2] == 0) && \
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((a)->s6_addr32[3] == 0))
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/*
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* Loopback
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*/
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#define IN6_IS_ADDR_LOOPBACK(a) \
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(((a)->s6_addr32[0] == 0) && \
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((a)->s6_addr32[1] == 0) && \
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((a)->s6_addr32[2] == 0) && \
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((a)->s6_addr32[3] == htonl(1)))
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/*
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* IPv4 compatible
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*/
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#define IN6_IS_ADDR_V4COMPAT(a) \
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(((a)->s6_addr32[0] == 0) && \
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((a)->s6_addr32[1] == 0) && \
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((a)->s6_addr32[2] == 0) && \
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((a)->s6_addr32[3] != 0) && \
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((a)->s6_addr32[3] != htonl(1)))
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/*
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* Mapped
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*/
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#define IN6_IS_ADDR_V4MAPPED(a) \
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(((a)->s6_addr32[0] == 0) && \
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((a)->s6_addr32[1] == 0) && \
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((a)->s6_addr32[2] == htonl(0x0000ffff)))
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/*
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* Multicast
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*/
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#define IN6_IS_ADDR_MULTICAST(a) \
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((a)->s6_addr8[0] == 0xffU)
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/*
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* Unicast link / site local.
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*/
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#define IN6_IS_ADDR_LINKLOCAL(a) \
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(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
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#define IN6_IS_ADDR_SITELOCAL(a) \
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(((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
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#endif /* ISC_ONLY_IPV6 */
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#endif /* ISC_IPV6_H */
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