/* $NetBSD: eui64.h,v 1.5 2021/01/09 16:39:28 christos Exp $ */ /* * eui64.h - EUI64 routines for IPv6CP. * * Copyright (c) 1999 Tommi Komulainen. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The name(s) of the authors of this software must not be used to * endorse or promote products derived from this software without * prior written permission. * * 4. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by Tommi Komulainen * <Tommi.Komulainen@iki.fi>". * * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * */ #ifndef __EUI64_H__ #define __EUI64_H__ #if !defined(INET6) #error "this file should only be included when INET6 is defined" #endif /* not defined(INET6) */ #if defined(SOL2) #include <netinet/in.h> typedef union { uint8_t e8[8]; /* lower 64-bit IPv6 address */ uint32_t e32[2]; /* lower 64-bit IPv6 address */ } eui64_t; /* * Declare the two below, since in.h only defines them when _KERNEL * is declared - which shouldn't be true when dealing with user-land programs */ #define s6_addr8 _S6_un._S6_u8 #define s6_addr32 _S6_un._S6_u32 #else /* else if not defined(SOL2) */ /* * 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; #endif /* defined(SOL2) */ #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(eui64_t); /* Returns ascii representation of id */ #endif /* __EUI64_H__ */