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67 lines
2.3 KiB
C
67 lines
2.3 KiB
C
/**
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* @file
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* Loop Interface
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*
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*/
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/*
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* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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*/
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#include "lwip/opt.h"
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#if LWIP_HAVE_LOOPIF
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#include "netif/loopif.h"
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#include "lwip/snmp.h"
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/**
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* Initialize a lwip network interface structure for a loopback interface
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*
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* @param netif the lwip network interface structure for this loopif
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* @return ERR_OK if the loopif is initialized
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* ERR_MEM if private data couldn't be allocated
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*/
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err_t
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loopif_init(struct netif *netif)
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{
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/* initialize the snmp variables and counters inside the struct netif
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* ifSpeed: no assumption can be made!
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*/
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NETIF_INIT_SNMP(netif, snmp_ifType_softwareLoopback, 0);
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netif->name[0] = 'l';
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netif->name[1] = 'o';
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netif->output = netif_loop_output;
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return ERR_OK;
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}
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#endif /* LWIP_HAVE_LOOPIF */
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