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Diffstat (limited to 'lib/isc/include/isc/ipv6.h')
| -rw-r--r-- | lib/isc/include/isc/ipv6.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/lib/isc/include/isc/ipv6.h b/lib/isc/include/isc/ipv6.h new file mode 100644 index 0000000..8054c9e --- /dev/null +++ b/lib/isc/include/isc/ipv6.h @@ -0,0 +1,148 @@ +/* + * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC") + * Copyright (C) 1999-2002 Internet Software Consortium. + * + * Permission to use, copy, modify, and/or 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 1.24 2007/06/19 23:47:18 tbox 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 + *****/ + +/*! \file isc/ipv6.h + * \brief IPv6 definitions for systems which do not support IPv6. + * + * \li MP: + * No impact. + * + * \li Reliability: + * No anticipated impact. + * + * \li Resources: + * N/A. + * + * \li Security: + * No anticipated impact. + * + * \li Standards: + * RFC2553. + */ + +/*** + *** 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 }}} + +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_IPV6_H */ |