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111 lines
2.8 KiB
C
111 lines
2.8 KiB
C
/*
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* Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC")
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* Copyright (C) 2000-2002 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 ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id: ipv6.h,v 1.9.2.2.2.3 2004/03/08 09:05:02 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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***** 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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#define s6_addr8 s6_addr
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#define in6_addr in_addr6
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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 in_addr6 in6addr_any;
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LIBISC_EXTERNAL_DATA extern const struct in_addr6 in6addr_loopback;
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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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*((u_long *)((a)->s6_addr) ) == 0 && \
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*((u_long *)((a)->s6_addr) + 1) == 0 && \
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*((u_long *)((a)->s6_addr) + 2) == 0 && \
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*((u_long *)((a)->s6_addr) + 3) == 0 \
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)
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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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*((u_long *)((a)->s6_addr) ) == 0 && \
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*((u_long *)((a)->s6_addr) + 1) == 0 && \
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*((u_long *)((a)->s6_addr) + 2) == 0 && \
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*((u_long *)((a)->s6_addr) + 3) == htonl(1) \
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)
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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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*((u_long *)((a)->s6_addr) ) == 0 && \
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*((u_long *)((a)->s6_addr) + 1) == 0 && \
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*((u_long *)((a)->s6_addr) + 2) == 0 && \
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*((u_long *)((a)->s6_addr) + 3) != 0 && \
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*((u_long *)((a)->s6_addr) + 3) != htonl(1) \
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)
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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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*((u_long *)((a)->s6_addr) ) == 0 && \
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*((u_long *)((a)->s6_addr) + 1) == 0 && \
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*((u_long *)((a)->s6_addr) + 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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(*((u_long *)((a)->s6_addr) ) == 0xfe) && \
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((*((u_long *)((a)->s6_addr) + 1) & 0xc0) == 0x80))
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#define IN6_IS_ADDR_SITELOCAL(a) (\
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(*((u_long *)((a)->s6_addr) ) == 0xfe) && \
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((*((u_long *)((a)->s6_addr) + 1) & 0xc0) == 0xc0))
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#endif /* ISC_IPV6_H */
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