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71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
/*
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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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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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$Id: eui64.h,v 1.2 1999/08/25 04:15:51 paulus Exp $
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*/
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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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#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 __P((eui64_t)); /* Returns ascii representation of id */
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