nes-proj/os/net/linkaddr.c

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/*
* Copyright (c) 2007, Swedish Institute of Computer Science.
* 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. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
*/
/**
* \file
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* Functions for manipulating link-layer addresses
* \author
* Adam Dunkels <adam@sics.se>
*/
/**
* \addtogroup linkaddr
* @{
*/
#include "net/linkaddr.h"
#include <string.h>
linkaddr_t linkaddr_node_addr;
#if LINKADDR_SIZE == 2
const linkaddr_t linkaddr_null = { { 0, 0 } };
#else /*LINKADDR_SIZE == 2*/
#if LINKADDR_SIZE == 8
const linkaddr_t linkaddr_null = { { 0, 0, 0, 0, 0, 0, 0, 0 } };
#endif /*LINKADDR_SIZE == 8*/
#if LINKADDR_SIZE == 6
const linkaddr_t linkaddr_null = { { 0, 0, 0, 0, 0, 0 } };
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#endif /*LINKADDR_SIZE == 6*/
#endif /*LINKADDR_SIZE == 2*/
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/*---------------------------------------------------------------------------*/
void
linkaddr_copy(linkaddr_t *dest, const linkaddr_t *src)
{
memcpy(dest, src, LINKADDR_SIZE);
}
/*---------------------------------------------------------------------------*/
int
linkaddr_cmp(const linkaddr_t *addr1, const linkaddr_t *addr2)
{
return (memcmp(addr1, addr2, LINKADDR_SIZE) == 0);
}
/*---------------------------------------------------------------------------*/
void
linkaddr_set_node_addr(linkaddr_t *t)
{
linkaddr_copy(&linkaddr_node_addr, t);
}
/*---------------------------------------------------------------------------*/
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/** @} */