text: /* This source file is part of the ATMEL AVR-UC3-SoftwareFramework-1.7.0 Release */
  
  /**
   * @file
   * Loop Interface
   *
   */
  
  /*
   * Copyright (c) 2001-2004 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. The name of the author may not be used to endorse or promote products
   *    derived from this software without specific prior written permission. 
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 lwIP TCP/IP stack.
   * 
   * Author: Adam Dunkels <adam@sics.se>
   *
   */
  #include "lwip/opt.h"
  
  #if LWIP_HAVE_LOOPIF
  
  #include "netif/loopif.h"
  #include "lwip/snmp.h"
  
  /**
   * Initialize a lwip network interface structure for a loopback interface
   *
   * @param netif the lwip network interface structure for this loopif
   * @return ERR_OK if the loopif is initialized
   *         ERR_MEM if private data couldn't be allocated
   */
  err_t
  loopif_init(struct netif *netif)
  {
    /* initialize the snmp variables and counters inside the struct netif
     * ifSpeed: no assumption can be made!
     */
    NETIF_INIT_SNMP(netif, snmp_ifType_softwareLoopback, 0);
  
    netif->name[0] = 'l';
    netif->name[1] = 'o';
    netif->output = netif_loop_output;
    return ERR_OK;
  }
  
  #endif /* LWIP_HAVE_LOOPIF */
  