text: /*
   * 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
   *         Functions for manipulating link-layer addresses
   * \author
   *         Adam Dunkels <adam@sics.se>
   */
  
  /**
   * \addtogroup linkaddr
   * @{
   */
  
  #include "net/linkaddr.h"
  #include <string.h>
  #include "sys/log.h"
  #include <net/uip-hton.h>
  
  linkaddr_t linkaddr_node_addr;
  #if LINKADDR_SIZE == 2
  const linkaddr_t linkaddr_null = { { 0, 0 } };
  #elif LINKADDR_SIZE == 8
  const linkaddr_t linkaddr_null = { { 0, 0, 0, 0, 0, 0, 0, 0 } };
  #elif LINKADDR_SIZE == 6
  const linkaddr_t linkaddr_null = { { 0, 0, 0, 0, 0, 0 } };
  #elif LINKADDR_SIZE == 4
  const linkaddr_t linkaddr_null = { { 0, 0, 0, 0 } };
  #elif LINKADDR_SIZE == 1
  const linkaddr_t linkaddr_null = { { 0 } };
  #else
  #error please define linkaddr_null for your wpecifed LINKADDR_SIZE
  #endif /*LINKADDR_SIZE == 2*/
  
  
  /*---------------------------------------------------------------------------*/
  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);
  }
  /*---------------------------------------------------------------------------*/
  void
  log_lladdr(const linkaddr_t *lladdr)
  {
    if(lladdr == NULL) {
      LOG_OUTPUT("(NULL LL addr)");
      return;
    } else {
      unsigned int i;
      for(i = 0; i < LINKADDR_SIZE; i++) {
        if(i > 0 && i % 2 == 0) {
          LOG_OUTPUT(".");
        }
        LOG_OUTPUT("%02x", lladdr->u8[i]);
      }
    }
  }
  /*---------------------------------------------------------------------------*/
  void
  log_lladdr_compact(const linkaddr_t *lladdr)
  {
    if(lladdr == NULL || linkaddr_cmp(lladdr, &linkaddr_null)) {
      LOG_OUTPUT("LL-NULL");
    } else {
  #if BUILD_WITH_DEPLOYMENT
      LOG_OUTPUT("LL-%04u", deployment_id_from_lladdr(lladdr));
  #else /* BUILD_WITH_DEPLOYMENT */
  #if LINKADDR_SIZE == 8
      LOG_OUTPUT("LL-%04x", UIP_HTONS(lladdr->u16[LINKADDR_SIZE/2-1]));
  #elif LINKADDR_SIZE == 2
      LOG_OUTPUT("LL-%04x", UIP_HTONS(lladdr->u16[0]));
  #endif
  #endif /* BUILD_WITH_DEPLOYMENT */
    }
  }
  /*---------------------------------------------------------------------------*/
  
  /** @} */
  