1 /* 2 * eui64.h - EUI64 routines for IPv6CP. 3 * 4 * Copyright (c) 1999 Tommi Komulainen. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 18 * 3. The name(s) of the authors of this software must not be used to 19 * endorse or promote products derived from this software without 20 * prior written permission. 21 * 22 * 4. Redistributions of any form whatsoever must retain the following 23 * acknowledgment: 24 * "This product includes software developed by Tommi Komulainen 25 * <Tommi.Komulainen (at) iki.fi>". 26 * 27 * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO 28 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 29 * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY 30 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 31 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN 32 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 33 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 34 * 35 * $Id: eui64.h,v 1.6 2002/12/04 23:03:32 paulus Exp $ 36 */ 37 38 #ifndef __EUI64_H__ 39 #define __EUI64_H__ 40 41 #if !defined(INET6) 42 #error "this file should only be included when INET6 is defined" 43 #endif /* not defined(INET6) */ 44 45 #if defined(SOL2) 46 #include <netinet/in.h> 47 48 typedef union { 49 uint8_t e8[8]; /* lower 64-bit IPv6 address */ 50 uint32_t e32[2]; /* lower 64-bit IPv6 address */ 51 } eui64_t; 52 53 /* 54 * Declare the two below, since in.h only defines them when _KERNEL 55 * is declared - which shouldn't be true when dealing with user-land programs 56 */ 57 #define s6_addr8 _S6_un._S6_u8 58 #define s6_addr32 _S6_un._S6_u32 59 60 #else /* else if not defined(SOL2) */ 61 62 /* 63 * TODO: 64 * 65 * Maybe this should be done by processing struct in6_addr directly... 66 */ 67 typedef union 68 { 69 u_int8_t e8[8]; 70 u_int16_t e16[4]; 71 u_int32_t e32[2]; 72 } eui64_t; 73 74 #endif /* defined(SOL2) */ 75 76 #define eui64_iszero(e) (((e).e32[0] | (e).e32[1]) == 0) 77 #define eui64_equals(e, o) (((e).e32[0] == (o).e32[0]) && \ 78 ((e).e32[1] == (o).e32[1])) 79 #define eui64_zero(e) (e).e32[0] = (e).e32[1] = 0; 80 81 #define eui64_copy(s, d) memcpy(&(d), &(s), sizeof(eui64_t)) 82 83 #define eui64_magic(e) do { \ 84 (e).e32[0] = magic(); \ 85 (e).e32[1] = magic(); \ 86 (e).e8[0] &= ~2; \ 87 } while (0) 88 #define eui64_magic_nz(x) do { \ 89 eui64_magic(x); \ 90 } while (eui64_iszero(x)) 91 #define eui64_magic_ne(x, y) do { \ 92 eui64_magic(x); \ 93 } while (eui64_equals(x, y)) 94 95 #define eui64_get(ll, cp) do { \ 96 eui64_copy((*cp), (ll)); \ 97 (cp) += sizeof(eui64_t); \ 98 } while (0) 99 100 #define eui64_put(ll, cp) do { \ 101 eui64_copy((ll), (*cp)); \ 102 (cp) += sizeof(eui64_t); \ 103 } while (0) 104 105 #define eui64_set32(e, l) do { \ 106 (e).e32[0] = 0; \ 107 (e).e32[1] = htonl(l); \ 108 } while (0) 109 #define eui64_setlo32(e, l) eui64_set32(e, l) 110 111 char *eui64_ntoa __P((eui64_t)); /* Returns ascii representation of id */ 112 113 #endif /* __EUI64_H__ */ 114 115
