/* $NetBSD: eui64.h,v 1.6 2025/01/08 19:59:39 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
* <
[email protected]>".
*
* 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 PPP_EUI64_H
#define PPP_EUI64_H
#include "pppdconf.h"
#ifdef __cplusplus
extern "C" {
#endif
#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 */
#ifdef __cplusplus
}
#endif
#endif /* PPP_EUI64_H */
