/* eui64.h - EUI64 routines for IPv6CP. Copyright (C) 1999 Tommi Komulainen This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. $Id: eui64.h,v 1.2 1999/08/25 04:15:51 paulus Exp $ */ /* * TODO: * * Maybe this should be done by processing struct in6_addr directly... */ typedef union { u_int8_t e8[8]; u_int16_t e16[4]; u_int32_t e32[2]; } eui64_t; #define eui64_iszero(e) (((e).e32[0] | (e).e32[1]) == 0) #define eui64_equals(e, o) (((e).e32[0] == (o).e32[0]) && \ ((e).e32[1] == (o).e32[1])) #define eui64_zero(e) (e).e32[0] = (e).e32[1] = 0; #define eui64_copy(s, d) memcpy(&(d), &(s), sizeof(eui64_t)) #define eui64_magic(e) do { \ (e).e32[0] = magic(); \ (e).e32[1] = magic(); \ (e).e8[0] &= ~2; \ } while (0) #define eui64_magic_nz(x) do { \ eui64_magic(x); \ } while (eui64_iszero(x)) #define eui64_magic_ne(x, y) do { \ eui64_magic(x); \ } while (eui64_equals(x, y)) #define eui64_get(ll, cp) do { \ eui64_copy((*cp), (ll)); \ (cp) += sizeof(eui64_t); \ } while (0) #define eui64_put(ll, cp) do { \ eui64_copy((ll), (*cp)); \ (cp) += sizeof(eui64_t); \ } while (0) #define eui64_set32(e, l) do { \ (e).e32[0] = 0; \ (e).e32[1] = htonl(l); \ } while (0) #define eui64_setlo32(e, l) eui64_set32(e, l) char *eui64_ntoa __P((eui64_t)); /* Returns ascii representation of id */