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https://github.com/0xFEEDC0DE64/arduino-esp32.git
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95 lines
2.9 KiB
C
95 lines
2.9 KiB
C
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/*
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* eui64.h - EUI64 routines for IPv6CP.
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*
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* Copyright (c) 1999 Tommi Komulainen. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The name(s) of the authors of this software must not be used to
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* endorse or promote products derived from this software without
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* prior written permission.
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*
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* 4. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by Tommi Komulainen
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* <Tommi.Komulainen@iki.fi>".
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*
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* THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
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* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
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* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* $Id: eui64.h,v 1.6 2002/12/04 23:03:32 paulus Exp $
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*/
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#include "lwip/opt.h"
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#if PPP_SUPPORT && PPP_IPV6_SUPPORT /* don't build if not configured for use in lwipopts.h */
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#ifndef __EUI64_H__
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#define __EUI64_H__
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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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u8_t e8[8];
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u16_t e16[4];
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u32_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(eui64_t); /* Returns ascii representation of id */
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#endif /* __EUI64_H__ */
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#endif /* PPP_SUPPORT && PPP_IPV6_SUPPORT */
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