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- /*
- * Copyright (C) 2004, 2005 Internet Systems Consortium, Inc. ("ISC")
- * Copyright (C) 2000, 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 ISC DISCLAIMS ALL WARRANTIES WITH
- * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS. IN NO EVENT SHALL ISC 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 1.10.18.2 2005/04/29 00:17:21 marka Exp $ */
-
- #ifndef LWRES_IPV6_H
- #define LWRES_IPV6_H 1
-
- /*****
- ***** Module Info
- *****/
-
- /*! \file 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 */
-