[457] | 1 | /*
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| 2 | * eui64.h - EUI64 routines for IPv6CP.
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| 3 | *
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| 4 | * Copyright (c) 1999 Tommi Komulainen. All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | *
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| 10 | * 1. Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | *
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| 13 | * 2. Redistributions in binary form must reproduce the above copyright
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| 14 | * notice, this list of conditions and the following disclaimer in
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| 15 | * the documentation and/or other materials provided with the
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| 16 | * distribution.
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| 17 | *
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| 18 | * 3. The name(s) of the authors of this software must not be used to
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| 19 | * endorse or promote products derived from this software without
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| 20 | * prior written permission.
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| 21 | *
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| 22 | * 4. Redistributions of any form whatsoever must retain the following
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| 23 | * acknowledgment:
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| 24 | * "This product includes software developed by Tommi Komulainen
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| 25 | * <Tommi.Komulainen@iki.fi>".
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| 26 | *
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| 27 | * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
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| 28 | * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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| 29 | * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
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| 30 | * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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| 31 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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| 32 | * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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| 33 | * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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| 34 | *
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| 35 | * $Id$
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| 36 | */
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| 37 |
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| 38 | #include "netif/ppp/ppp_opts.h"
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| 39 | #if PPP_SUPPORT && PPP_IPV6_SUPPORT /* don't build if not configured for use in lwipopts.h */
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| 40 |
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| 41 | #ifndef EUI64_H
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| 42 | #define EUI64_H
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| 43 |
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| 44 | #ifdef __cplusplus
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| 45 | extern "C" {
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| 46 | #endif
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| 47 |
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| 48 | /*
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| 49 | * @todo:
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| 50 | *
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| 51 | * Maybe this should be done by processing struct in6_addr directly...
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| 52 | */
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| 53 | typedef union
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| 54 | {
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| 55 | u8_t e8[8];
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| 56 | u16_t e16[4];
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| 57 | u32_t e32[2];
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| 58 | } eui64_t;
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| 59 |
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| 60 | #define eui64_iszero(e) (((e).e32[0] | (e).e32[1]) == 0)
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| 61 | #define eui64_equals(e, o) (((e).e32[0] == (o).e32[0]) && \
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| 62 | ((e).e32[1] == (o).e32[1]))
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| 63 | #define eui64_zero(e) (e).e32[0] = (e).e32[1] = 0;
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| 64 |
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| 65 | #define eui64_copy(s, d) memcpy(&(d), &(s), sizeof(eui64_t))
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| 66 |
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| 67 | #define eui64_magic(e) do { \
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| 68 | (e).e32[0] = magic(); \
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| 69 | (e).e32[1] = magic(); \
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| 70 | (e).e8[0] &= ~2; \
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| 71 | } while (0)
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| 72 | #define eui64_magic_nz(x) do { \
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| 73 | eui64_magic(x); \
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| 74 | } while (eui64_iszero(x))
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| 75 | #define eui64_magic_ne(x, y) do { \
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| 76 | eui64_magic(x); \
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| 77 | } while (eui64_equals(x, y))
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| 78 |
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| 79 | #define eui64_get(ll, cp) do { \
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| 80 | eui64_copy((*cp), (ll)); \
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| 81 | (cp) += sizeof(eui64_t); \
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| 82 | } while (0)
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| 83 |
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| 84 | #define eui64_put(ll, cp) do { \
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| 85 | eui64_copy((ll), (*cp)); \
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| 86 | (cp) += sizeof(eui64_t); \
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| 87 | } while (0)
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| 88 |
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| 89 | #define eui64_set32(e, l) do { \
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| 90 | (e).e32[0] = 0; \
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| 91 | (e).e32[1] = lwip_htonl(l); \
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| 92 | } while (0)
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| 93 | #define eui64_setlo32(e, l) eui64_set32(e, l)
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| 94 |
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| 95 | char *eui64_ntoa(eui64_t); /* Returns ascii representation of id */
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| 96 |
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| 97 | #ifdef __cplusplus
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| 98 | }
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| 99 | #endif
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| 100 |
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| 101 | #endif /* EUI64_H */
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| 102 | #endif /* PPP_SUPPORT && PPP_IPV6_SUPPORT */
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