| /** |
| * @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 */ |
