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99 lines
2.7 KiB
C
99 lines
2.7 KiB
C
/* $FreeBSD$ */
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/*
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eui64.h - EUI64 routines for IPv6CP.
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Copyright (C) 1999 Tommi Komulainen <Tommi.Komulainen@iki.fi>
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Redistribution and use in source and binary forms are permitted
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provided that the above copyright notice and this paragraph are
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duplicated in all such forms and that any documentation,
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advertising materials, and other materials related to such
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distribution and use acknowledge that the software was developed
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by Tommi Komulainen. The name of the author may not be used
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to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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$Id: eui64.h,v 1.3 1999/09/30 19:56:37 masputra Exp $
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*/
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#ifndef __EUI64_H__
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#define __EUI64_H__
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#if !defined(INET6)
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#error "this file should only be included when INET6 is defined"
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#endif /* not defined(INET6) */
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#if defined(SOL2)
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#include <netinet/in.h>
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typedef union {
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uint8_t e8[8]; /* lower 64-bit IPv6 address */
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uint32_t e32[2]; /* lower 64-bit IPv6 address */
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} eui64_t;
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/*
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* Declare the two below, since in.h only defines them when _KERNEL
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* is declared - which shouldn't be true when dealing with user-land programs
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*/
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#define s6_addr8 _S6_un._S6_u8
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#define s6_addr32 _S6_un._S6_u32
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#else /* else if not defined(SOL2) */
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/*
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* TODO:
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*
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* Maybe this should be done by processing struct in6_addr directly...
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*/
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typedef union
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{
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u_int8_t e8[8];
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u_int16_t e16[4];
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u_int32_t e32[2];
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} eui64_t;
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#endif /* defined(SOL2) */
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#define eui64_iszero(e) (((e).e32[0] | (e).e32[1]) == 0)
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#define eui64_equals(e, o) (((e).e32[0] == (o).e32[0]) && \
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((e).e32[1] == (o).e32[1]))
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#define eui64_zero(e) (e).e32[0] = (e).e32[1] = 0;
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#define eui64_copy(s, d) memcpy(&(d), &(s), sizeof(eui64_t))
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#define eui64_magic(e) do { \
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(e).e32[0] = magic(); \
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(e).e32[1] = magic(); \
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(e).e8[0] &= ~2; \
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} while (0)
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#define eui64_magic_nz(x) do { \
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eui64_magic(x); \
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} while (eui64_iszero(x))
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#define eui64_magic_ne(x, y) do { \
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eui64_magic(x); \
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} while (eui64_equals(x, y))
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#define eui64_get(ll, cp) do { \
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eui64_copy((*cp), (ll)); \
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(cp) += sizeof(eui64_t); \
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} while (0)
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#define eui64_put(ll, cp) do { \
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eui64_copy((ll), (*cp)); \
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(cp) += sizeof(eui64_t); \
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} while (0)
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#define eui64_set32(e, l) do { \
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(e).e32[0] = 0; \
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(e).e32[1] = htonl(l); \
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} while (0)
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#define eui64_setlo32(e, l) eui64_set32(e, l)
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char *eui64_ntoa(eui64_t); /* Returns ascii representation of id */
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#endif /* __EUI64_H__ */
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