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<h1>netif.h</h1><div class="fragment"><pre>00001 <span class="comment">/*</span>
00002 <span class="comment"> * Copyright (c) 2001, Swedish Institute of Computer Science.</span>
00003 <span class="comment"> * All rights reserved. </span>
00004 <span class="comment"> *</span>
00005 <span class="comment"> * Redistribution and use in source and binary forms, with or without </span>
00006 <span class="comment"> * modification, are permitted provided that the following conditions </span>
00007 <span class="comment"> * are met: </span>
00008 <span class="comment"> * 1. Redistributions of source code must retain the above copyright </span>
00009 <span class="comment"> * notice, this list of conditions and the following disclaimer. </span>
00010 <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright </span>
00011 <span class="comment"> * notice, this list of conditions and the following disclaimer in the </span>
00012 <span class="comment"> * documentation and/or other materials provided with the distribution. </span>
00013 <span class="comment"> * 3. Neither the name of the Institute nor the names of its contributors </span>
00014 <span class="comment"> * may be used to endorse or promote products derived from this software </span>
00015 <span class="comment"> * without specific prior written permission. </span>
00016 <span class="comment"> *</span>
00017 <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND </span>
00018 <span class="comment"> * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE </span>
00019 <span class="comment"> * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE </span>
00020 <span class="comment"> * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE </span>
00021 <span class="comment"> * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL </span>
00022 <span class="comment"> * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS </span>
00023 <span class="comment"> * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) </span>
00024 <span class="comment"> * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT </span>
00025 <span class="comment"> * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY </span>
00026 <span class="comment"> * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF </span>
00027 <span class="comment"> * SUCH DAMAGE. </span>
00028 <span class="comment"> *</span>
00029 <span class="comment"> * This file is part of the lwIP TCP/IP stack.</span>
00030 <span class="comment"> * </span>
00031 <span class="comment"> * Author: Adam Dunkels <adam@sics.se></span>
00032 <span class="comment"> *</span>
00033 <span class="comment"> * $Id$</span>
00034 <span class="comment"> */</span>
00035 <span class="preprocessor">#ifndef __LWIP_NETIF_H__</span>
00036 <span class="preprocessor"></span><span class="preprocessor">#define __LWIP_NETIF_H__</span>
00037 <span class="preprocessor"></span>
00038 <span class="preprocessor">#include "net/opt.h"</span>
00039
00040 <span class="preprocessor">#include "net/err.h"</span>
00041
00042 <span class="preprocessor">#include "net/ipv4/ip_addr.h"</span>
00043 <span class="preprocessor">#include "net/ipv4/inet.h"</span>
00044
00045 <span class="preprocessor">#include "net/pbuf.h"</span>
00046
00047
00048 <span class="keyword">struct </span>netif {
00049 <span class="keyword">struct </span>netif *next;
00050 uInt8 num;
00051 <span class="keyword">struct </span>ip_addr ip_addr;
00052 <span class="keyword">struct </span>ip_addr netmask; <span class="comment">/* netmask in network byte order */</span>
00053 <span class="keyword">struct </span>ip_addr gw;
00054 <span class="keywordtype">char</span> hwaddr[6];
00055
00056 <span class="comment">/* This function is called by the network device driver</span>
00057 <span class="comment"> when it wants to pass a packet to the TCP/IP stack. */</span>
00058 err_t (* input)(<span class="keyword">struct </span>pbuf *p, <span class="keyword">struct </span>netif *inp);
00059
00060 <span class="comment">/* The following two fields should be filled in by the</span>
00061 <span class="comment"> initialization function for the device driver. */</span>
00062
00063 <span class="keywordtype">char</span> name[2];
00064 <span class="comment">/* This function is called by the IP module when it wants</span>
00065 <span class="comment"> to send a packet on the interface. */</span>
00066 err_t (* output)(<span class="keyword">struct </span>netif *netif, <span class="keyword">struct </span>pbuf *p, <span class="keyword">struct </span>ip_addr *ipaddr);
00067 err_t (* linkoutput)(<span class="keyword">struct </span>netif *netif, <span class="keyword">struct </span>pbuf *p);
00068
00069 <span class="comment">/* This field can be set bu the device driver and could point</span>
00070 <span class="comment"> to state information for the device. */</span>
00071 <span class="keywordtype">void</span> *state;
00072 };
00073
00074 <span class="comment">/* The list of network interfaces. */</span>
00075 <span class="keyword">extern</span> <span class="keyword">struct </span>netif *netif_list;
00076 <span class="keyword">extern</span> <span class="keyword">struct </span>netif *netif_default;
00077
00078
00079 <span class="comment">/* netif_init() must be called first. */</span>
00080 <span class="keywordtype">void</span> netif_init();
00081
00082 <span class="keyword">struct </span>netif *netif_add(<span class="keyword">struct</span> ip_addr *ipaddr, <span class="keyword">struct</span> ip_addr *netmask,
00083 <span class="keyword">struct</span> ip_addr *gw,
00084 <span class="keywordtype">void</span> (* init)(<span class="keyword">struct</span> netif *netif),
00085 err_t (* input)(<span class="keyword">struct</span> pbuf *p, <span class="keyword">struct</span> netif *netif));
00086
00087 <span class="comment">/* Returns a network interface given its name. The name is of the form</span>
00088 <span class="comment"> "et0", where the first two letters are the "name" field in the</span>
00089 <span class="comment"> netif structure, and the digit is in the num field in the same</span>
00090 <span class="comment"> structure. */</span>
00091 <span class="keyword">struct </span>netif *netif_find(<span class="keywordtype">char</span> *name);
00092
00093 <span class="keywordtype">void</span> netif_set_default(<span class="keyword">struct</span> netif *netif);
00094
00095 <span class="keywordtype">void</span> netif_set_ipaddr(<span class="keyword">struct</span> netif *netif, <span class="keyword">struct</span> ip_addr *ipaddr);
00096 <span class="keywordtype">void</span> netif_set_netmask(<span class="keyword">struct</span> netif *netif, <span class="keyword">struct</span> ip_addr *netmast);
00097 <span class="keywordtype">void</span> netif_set_gw(<span class="keyword">struct</span> netif *netif, <span class="keyword">struct</span> ip_addr *gw);
00098
00099 <span class="preprocessor">#endif </span><span class="comment">/* __LWIP_NETIF_H__ */</span>
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