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Diffstat (limited to 'include/isc/ipv6.h')
| -rw-r--r-- | include/isc/ipv6.h | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/include/isc/ipv6.h b/include/isc/ipv6.h new file mode 100644 index 000000000000..18893b7003ce --- /dev/null +++ b/include/isc/ipv6.h @@ -0,0 +1,153 @@ +/* + * 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 1.19 2002/04/03 06:38:33 marka 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> + +/* + * We probably don't need this on NTP + */ +#ifdef ISC_ONLY_IPV6 +/*** + *** 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 }}} + +LIBISC_EXTERNAL_DATA extern const struct in6_addr in6addr_any; +LIBISC_EXTERNAL_DATA 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) + +/* + * Unicast link / site local. + */ +#define IN6_IS_ADDR_LINKLOCAL(a) \ + (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80)) +#define IN6_IS_ADDR_SITELOCAL(a) \ + (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0)) + +#endif /* ISC_ONLY_IPV6 */ +#endif /* ISC_IPV6_H */ |