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<h1>ip.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_IP_H__</span>
00036 <span class="preprocessor"></span><span class="preprocessor">#define __LWIP_IP_H__</span>
00037 <span class="preprocessor"></span>
00038 <span class="preprocessor">#include "lwip/debug.h"</span>
00039 <span class="preprocessor">#include "lwip/def.h"</span>
00040 <span class="preprocessor">#include "lwip/pbuf.h"</span>
00041 <span class="preprocessor">#include "lwip/ip_addr.h"</span>
00042
00043 <span class="preprocessor">#include "lwip/err.h"</span>
00044
00045 <span class="preprocessor">#define IP_HLEN 40</span>
00046 <span class="preprocessor"></span>
00047 <span class="preprocessor">#define IP_PROTO_ICMP 58</span>
00048 <span class="preprocessor"></span><span class="preprocessor">#define IP_PROTO_UDP 17</span>
00049 <span class="preprocessor"></span><span class="preprocessor">#define IP_PROTO_UDPLITE 170</span>
00050 <span class="preprocessor"></span><span class="preprocessor">#define IP_PROTO_TCP 6</span>
00051 <span class="preprocessor"></span>
00052 <span class="comment">/* This is passed as the destination address to ip_output_if (not</span>
00053 <span class="comment"> to ip_output), meaning that an IP header already is constructed</span>
00054 <span class="comment"> in the pbuf. This is used when TCP retransmits. */</span>
00055 <span class="preprocessor">#ifdef IP_HDRINCL</span>
00056 <span class="preprocessor"></span><span class="preprocessor">#undef IP_HDRINCL</span>
00057 <span class="preprocessor"></span><span class="preprocessor">#endif </span><span class="comment">/* IP_HDRINCL */</span>
00058 <span class="preprocessor">#define IP_HDRINCL NULL</span>
00059 <span class="preprocessor"></span>
00060
00061 <span class="comment">/* The IPv6 header. */</span>
00062 <span class="keyword">struct </span>ip_hdr {
00063 <span class="preprocessor">#if BYTE_ORDER == LITTLE_ENDIAN</span>
00064 <span class="preprocessor"></span> u8_t tclass1:4, v:4;
00065 u8_t flow1:4, tclass2:4;
00066 <span class="preprocessor">#else</span>
00067 <span class="preprocessor"></span> u8_t v:4, tclass1:4;
00068 u8_t tclass2:8, flow1:4;
00069 <span class="preprocessor">#endif</span>
00070 <span class="preprocessor"></span> u16_t flow2;
00071 u16_t len; <span class="comment">/* payload length */</span>
00072 u8_t nexthdr; <span class="comment">/* next header */</span>
00073 u8_t hoplim; <span class="comment">/* hop limit (TTL) */</span>
00074 <span class="keyword">struct </span>ip_addr src, dest; <span class="comment">/* source and destination IP addresses */</span>
00075 };
00076
00077 <span class="keywordtype">void</span> ip_init(<span class="keywordtype">void</span>);
00078
00079 <span class="preprocessor">#include "lwip/netif.h"</span>
00080
00081 <span class="keyword">struct </span>netif *ip_route(<span class="keyword">struct</span> ip_addr *dest);
00082
00083 <span class="keywordtype">void</span> ip_input(<span class="keyword">struct</span> pbuf *p, <span class="keyword">struct</span> netif *inp);
00084
00085 <span class="comment">/* source and destination addresses in network byte order, please */</span>
00086 err_t ip_output(<span class="keyword">struct</span> pbuf *p, <span class="keyword">struct</span> ip_addr *src, <span class="keyword">struct</span> ip_addr *dest,
00087 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> ttl, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> proto);
00088
00089 err_t ip_output_if(<span class="keyword">struct</span> pbuf *p, <span class="keyword">struct</span> ip_addr *src, <span class="keyword">struct</span> ip_addr *dest,
00090 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> ttl, <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> proto,
00091 <span class="keyword">struct</span> netif *netif);
00092
00093 <span class="preprocessor">#if IP_DEBUG</span>
00094 <span class="preprocessor"></span><span class="keywordtype">void</span> ip_debug_print(<span class="keyword">struct</span> pbuf *p);
00095 <span class="preprocessor">#endif </span><span class="comment">/* IP_DEBUG */</span>
00096
00097 <span class="preprocessor">#endif </span><span class="comment">/* __LWIP_IP_H__ */</span>
00098
00099
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