ipv6.h revision 499b34cea04a46823d003d4c0520c8b03e8513cb
/*
* Copyright (C) 1999-2001 Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
* INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: ipv6.h,v 1.17 2001/01/09 21:57:02 bwelling Exp $ */
#ifndef ISC_IPV6_H
#define ISC_IPV6_H 1
/*
* Also define LWRES_IPV6_H to keep it from being included if liblwres is
* being used, or redefinition errors will occur.
*/
#define LWRES_IPV6_H 1
/*****
***** Module Info
*****/
/*
* IPv6 definitions for systems which do not support IPv6.
*
* MP:
* No impact.
*
* Reliability:
* No anticipated impact.
*
* Resources:
* N/A.
*
* Security:
* No anticipated impact.
*
* Standards:
* RFC 2553.
*/
/***
*** Imports.
***/
#include <isc/int.h>
#include <isc/platform.h>
/***
*** Types.
***/
struct in6_addr {
union {
isc_uint8_t _S6_u8[16];
isc_uint16_t _S6_u16[8];
isc_uint32_t _S6_u32[4];
} _S6_un;
};
#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 }}}
extern const struct in6_addr in6addr_any;
extern const struct in6_addr in6addr_loopback;
struct sockaddr_in6 {
#ifdef ISC_PLATFORM_HAVESALEN
isc_uint8_t sin6_len;
isc_uint8_t sin6_family;
#else
isc_uint16_t sin6_family;
#endif
isc_uint16_t sin6_port;
isc_uint32_t sin6_flowinfo;
struct in6_addr sin6_addr;
isc_uint32_t sin6_scope_id;
};
#ifdef ISC_PLATFORM_HAVESALEN
#define SIN6_LEN 1
#endif
/*
* Unspecified
*/
#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)))
/*
* Multicast
*/
#define IN6_IS_ADDR_MULTICAST(a) \
((a)->s6_addr8[0] == 0xffU)
#endif /* ISC_IPV6_H */