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<h1>icmp.h</h1><a href="ipv4_2icmp_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * Copyright (c) 2001, Swedish Institute of Computer Science.</span>
<a name="l00003"></a>00003 <span class="comment"> * All rights reserved. </span>
<a name="l00004"></a>00004 <span class="comment"> *</span>
<a name="l00005"></a>00005 <span class="comment"> * Redistribution and use in source and binary forms, with or without </span>
<a name="l00006"></a>00006 <span class="comment"> * modification, are permitted provided that the following conditions </span>
<a name="l00007"></a>00007 <span class="comment"> * are met: </span>
<a name="l00008"></a>00008 <span class="comment"> * 1. Redistributions of source code must retain the above copyright </span>
<a name="l00009"></a>00009 <span class="comment"> * notice, this list of conditions and the following disclaimer. </span>
<a name="l00010"></a>00010 <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright </span>
<a name="l00011"></a>00011 <span class="comment"> * notice, this list of conditions and the following disclaimer in the </span>
<a name="l00012"></a>00012 <span class="comment"> * documentation and/or other materials provided with the distribution. </span>
<a name="l00013"></a>00013 <span class="comment"> * 3. Neither the name of the Institute nor the names of its contributors </span>
<a name="l00014"></a>00014 <span class="comment"> * may be used to endorse or promote products derived from this software </span>
<a name="l00015"></a>00015 <span class="comment"> * without specific prior written permission. </span>
<a name="l00016"></a>00016 <span class="comment"> *</span>
<a name="l00017"></a>00017 <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND </span>
<a name="l00018"></a>00018 <span class="comment"> * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE </span>
<a name="l00019"></a>00019 <span class="comment"> * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE </span>
<a name="l00020"></a>00020 <span class="comment"> * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE </span>
<a name="l00021"></a>00021 <span class="comment"> * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL </span>
<a name="l00022"></a>00022 <span class="comment"> * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS </span>
<a name="l00023"></a>00023 <span class="comment"> * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) </span>
<a name="l00024"></a>00024 <span class="comment"> * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT </span>
<a name="l00025"></a>00025 <span class="comment"> * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY </span>
<a name="l00026"></a>00026 <span class="comment"> * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF </span>
<a name="l00027"></a>00027 <span class="comment"> * SUCH DAMAGE. </span>
<a name="l00028"></a>00028 <span class="comment"> *</span>
<a name="l00029"></a>00029 <span class="comment"> * This file is part of the lwIP TCP/IP stack.</span>
<a name="l00030"></a>00030 <span class="comment"> * </span>
<a name="l00031"></a>00031 <span class="comment"> * Author: Adam Dunkels <adam@sics.se></span>
<a name="l00032"></a>00032 <span class="comment"> *</span>
<a name="l00033"></a>00033 <span class="comment"> * $Id: ipv4_2icmp_8h-source.html 88 2016-01-12 00:11:29Z reddawg $</span>
<a name="l00034"></a>00034 <span class="comment"> */</span>
<a name="l00035"></a>00035 <span class="preprocessor">#ifndef __LWIP_ICMP_H__</span>
<a name="l00036"></a>00036 <span class="preprocessor"></span><span class="preprocessor">#define __LWIP_ICMP_H__</span>
<a name="l00037"></a>00037 <span class="preprocessor"></span>
<a name="l00038"></a>00038 <span class="preprocessor">#include "<a class="code" href="arch_8h.html">net/arch.h</a>"</span>
<a name="l00039"></a>00039
<a name="l00040"></a>00040 <span class="preprocessor">#include "<a class="code" href="opt_8h.html">net/opt.h</a>"</span>
<a name="l00041"></a>00041 <span class="preprocessor">#include "<a class="code" href="pbuf_8h.html">net/pbuf.h</a>"</span>
<a name="l00042"></a>00042
<a name="l00043"></a>00043 <span class="preprocessor">#include "<a class="code" href="netif_8h.html">net/netif.h</a>"</span>
<a name="l00044"></a>00044
<a name="l00045"></a><a class="code" href="ipv4_2icmp_8h.html#f1ff8912ae85b066d9dbe6caf3334ab7">00045</a> <span class="preprocessor">#define ICMP_ER 0 </span><span class="comment">/* echo reply */</span>
<a name="l00046"></a><a class="code" href="ipv4_2icmp_8h.html#87f8266c067fb604419fbf17c0d57d64">00046</a> <span class="preprocessor">#define ICMP_DUR 3 </span><span class="comment">/* destination unreachable */</span>
<a name="l00047"></a><a class="code" href="ipv4_2icmp_8h.html#eaa5cc8a0b5b0c7ffe590991b3b2a262">00047</a> <span class="preprocessor">#define ICMP_SQ 4 </span><span class="comment">/* source quench */</span>
<a name="l00048"></a><a class="code" href="ipv4_2icmp_8h.html#f8671e386aaa07888ad2bcb6150b113f">00048</a> <span class="preprocessor">#define ICMP_RD 5 </span><span class="comment">/* redirect */</span>
<a name="l00049"></a><a class="code" href="ipv4_2icmp_8h.html#d58231410d58e34b455328b888a9e73c">00049</a> <span class="preprocessor">#define ICMP_ECHO 8 </span><span class="comment">/* echo */</span>
<a name="l00050"></a><a class="code" href="ipv4_2icmp_8h.html#58e03a47804158d97a9c069cc2204797">00050</a> <span class="preprocessor">#define ICMP_TE 11 </span><span class="comment">/* time exceeded */</span>
<a name="l00051"></a><a class="code" href="ipv4_2icmp_8h.html#495e2e90e09c924c16ad8e6fef4b89dc">00051</a> <span class="preprocessor">#define ICMP_PP 12 </span><span class="comment">/* parameter problem */</span>
<a name="l00052"></a><a class="code" href="ipv4_2icmp_8h.html#776eca11e543699d8e55d470b3809a05">00052</a> <span class="preprocessor">#define ICMP_TS 13 </span><span class="comment">/* timestamp */</span>
<a name="l00053"></a><a class="code" href="ipv4_2icmp_8h.html#01f3814d260088de9777de2634130070">00053</a> <span class="preprocessor">#define ICMP_TSR 14 </span><span class="comment">/* timestamp reply */</span>
<a name="l00054"></a><a class="code" href="ipv4_2icmp_8h.html#55b78957e5ffd7aae0db3742b2c556a4">00054</a> <span class="preprocessor">#define ICMP_IRQ 15 </span><span class="comment">/* information request */</span>
<a name="l00055"></a><a class="code" href="ipv4_2icmp_8h.html#f9698624c0200d6be1681c9b5243d1e9">00055</a> <span class="preprocessor">#define ICMP_IR 16 </span><span class="comment">/* information reply */</span>
<a name="l00056"></a>00056
<a name="l00057"></a><a class="code" href="ipv4_2icmp_8h.html#17637465f209385e5d19ef47fd9266a5">00057</a> <span class="keyword">enum</span> <a class="code" href="ipv4_2icmp_8h.html#17637465f209385e5d19ef47fd9266a5">icmp_dur_type</a> {
<a name="l00058"></a>00058 <a class="code" href="ipv4_2icmp_8h.html#17637465f209385e5d19ef47fd9266a53cc3714544e123bdef2eadb1a4d320e3">ICMP_DUR_NET</a> = 0, <span class="comment">/* net unreachable */</span>
<a name="l00059"></a>00059 <a class="code" href="ipv4_2icmp_8h.html#17637465f209385e5d19ef47fd9266a5648ab915a76dfb7b9568e94de00da1e7">ICMP_DUR_HOST</a> = 1, <span class="comment">/* host unreachable */</span>
<a name="l00060"></a>00060 <a class="code" href="ipv4_2icmp_8h.html#17637465f209385e5d19ef47fd9266a53c7bbd13b613990413ef167017dfbcef">ICMP_DUR_PROTO</a> = 2, <span class="comment">/* protocol unreachable */</span>
<a name="l00061"></a>00061 <a class="code" href="ipv4_2icmp_8h.html#17637465f209385e5d19ef47fd9266a5c973dd9b04e094043ccc4cf875ef5644">ICMP_DUR_PORT</a> = 3, <span class="comment">/* port unreachable */</span>
<a name="l00062"></a>00062 <a class="code" href="ipv4_2icmp_8h.html#17637465f209385e5d19ef47fd9266a58be2bc49d42aa1a6ee1da93a8700ef5f">ICMP_DUR_FRAG</a> = 4, <span class="comment">/* fragmentation needed and DF set */</span>
<a name="l00063"></a>00063 <a class="code" href="ipv4_2icmp_8h.html#17637465f209385e5d19ef47fd9266a5f63296fc25f79e56946a56a8da132c13">ICMP_DUR_SR</a> = 5 <span class="comment">/* source route failed */</span>
<a name="l00064"></a>00064 };
<a name="l00065"></a>00065
<a name="l00066"></a><a class="code" href="ipv4_2icmp_8h.html#058d0a0769bd38db99fc6fd1dad1324a">00066</a> <span class="keyword">enum</span> <a class="code" href="ipv4_2icmp_8h.html#058d0a0769bd38db99fc6fd1dad1324a">icmp_te_type</a> {
<a name="l00067"></a>00067 <a class="code" href="ipv4_2icmp_8h.html#058d0a0769bd38db99fc6fd1dad1324a827a1f8705826a6cc3c22e2571acf02c">ICMP_TE_TTL</a> = 0, <span class="comment">/* time to live exceeded in transit */</span>
<a name="l00068"></a>00068 <a class="code" href="ipv4_2icmp_8h.html#058d0a0769bd38db99fc6fd1dad1324a4d351874c3e2d4a4cf46569df28cd796">ICMP_TE_FRAG</a> = 1 <span class="comment">/* fragment reassembly time exceeded */</span>
<a name="l00069"></a>00069 };
<a name="l00070"></a>00070
<a name="l00071"></a>00071 <span class="keywordtype">void</span> <a class="code" href="ipv4_2icmp_8h.html#c929e48a1dddf98050b73a2633fcaef1">icmp_input</a>(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *inp);
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="keywordtype">void</span> <a class="code" href="ipv4_2icmp_8h.html#e26c59eab4ce553964a0c9d43f534d06">icmp_dest_unreach</a>(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <span class="keyword">enum</span> <a class="code" href="ipv4_2icmp_8h.html#17637465f209385e5d19ef47fd9266a5">icmp_dur_type</a> t);
<a name="l00074"></a>00074 <span class="keywordtype">void</span> <a class="code" href="ipv4_2icmp_8h.html#49723e5e11c4bbc86197e58fdca7c119">icmp_time_exceeded</a>(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <span class="keyword">enum</span> <a class="code" href="ipv4_2icmp_8h.html#058d0a0769bd38db99fc6fd1dad1324a">icmp_te_type</a> t);
<a name="l00075"></a>00075
<a name="l00076"></a><a class="code" href="structicmp__echo__hdr.html">00076</a> <span class="keyword">struct </span><a class="code" href="structicmp__echo__hdr.html">icmp_echo_hdr</a> {
<a name="l00077"></a>00077 <a class="code" href="structicmp__echo__hdr.html#b1219f4ee9ad3b8f988904aaacf7138b">PACK_STRUCT_FIELD</a>(<a class="code" href="types_8h.html#3b65128d2644e9b80cec9a69bfa7e094">uInt16</a> _type_code);
<a name="l00078"></a>00078 <a class="code" href="structicmp__echo__hdr.html#b1219f4ee9ad3b8f988904aaacf7138b">PACK_STRUCT_FIELD</a>(<a class="code" href="types_8h.html#3b65128d2644e9b80cec9a69bfa7e094">uInt16</a> <a class="code" href="structicmp__echo__hdr.html#65ffa20f2da497b6ca7f2e2c75cc740a">chksum</a>);
<a name="l00079"></a>00079 <a class="code" href="structicmp__echo__hdr.html#b1219f4ee9ad3b8f988904aaacf7138b">PACK_STRUCT_FIELD</a>(<a class="code" href="types_8h.html#3b65128d2644e9b80cec9a69bfa7e094">uInt16</a> <span class="keywordtype">id</span>);
<a name="l00080"></a>00080 <a class="code" href="structicmp__echo__hdr.html#b1219f4ee9ad3b8f988904aaacf7138b">PACK_STRUCT_FIELD</a>(<a class="code" href="types_8h.html#3b65128d2644e9b80cec9a69bfa7e094">uInt16</a> <a class="code" href="structicmp__echo__hdr.html#42ade6a5230d4161c272fcaec67b7c3d">seqno</a>);
<a name="l00081"></a>00081 } <a class="code" href="cc_8h.html#33623da05bb55497534c3dc26ebebeb2">PACK_STRUCT_STRUCT</a>;
<a name="l00082"></a>00082
<a name="l00083"></a>00083
<a name="l00084"></a>00084
<a name="l00085"></a><a class="code" href="structicmp__dur__hdr.html">00085</a> <span class="keyword">struct </span><a class="code" href="structicmp__dur__hdr.html">icmp_dur_hdr</a> {
<a name="l00086"></a>00086 <a class="code" href="structicmp__dur__hdr.html#7fc1a2c96daa015d5e9c8c5581149dbe">PACK_STRUCT_FIELD</a>(<a class="code" href="types_8h.html#3b65128d2644e9b80cec9a69bfa7e094">uInt16</a> _type_code);
<a name="l00087"></a>00087 <a class="code" href="structicmp__dur__hdr.html#7fc1a2c96daa015d5e9c8c5581149dbe">PACK_STRUCT_FIELD</a>(<a class="code" href="types_8h.html#3b65128d2644e9b80cec9a69bfa7e094">uInt16</a> <a class="code" href="structicmp__dur__hdr.html#da29ca70b725524f59ba969efed5c870">chksum</a>);
<a name="l00088"></a>00088 <a class="code" href="structicmp__dur__hdr.html#7fc1a2c96daa015d5e9c8c5581149dbe">PACK_STRUCT_FIELD</a>(<a class="code" href="types_8h.html#5847ea0262a5aa61eee48cbe95544a78">uInt32</a> <a class="code" href="structicmp__dur__hdr.html#02d25a41e6438d64e6b858c40f4e3f4f">unused</a>);
<a name="l00089"></a>00089 } <a class="code" href="cc_8h.html#33623da05bb55497534c3dc26ebebeb2">PACK_STRUCT_STRUCT</a>;
<a name="l00090"></a>00090
<a name="l00091"></a><a class="code" href="structicmp__te__hdr.html">00091</a> <span class="keyword">struct </span><a class="code" href="structicmp__te__hdr.html">icmp_te_hdr</a> {
<a name="l00092"></a>00092 <a class="code" href="structicmp__te__hdr.html#46d8bbce99ed85535e02dc6d18c3294a">PACK_STRUCT_FIELD</a>(<a class="code" href="types_8h.html#3b65128d2644e9b80cec9a69bfa7e094">uInt16</a> _type_code);
<a name="l00093"></a>00093 <a class="code" href="structicmp__te__hdr.html#46d8bbce99ed85535e02dc6d18c3294a">PACK_STRUCT_FIELD</a>(<a class="code" href="types_8h.html#3b65128d2644e9b80cec9a69bfa7e094">uInt16</a> <a class="code" href="structicmp__te__hdr.html#fa9448daf9c3c077d49ade906c5ede64">chksum</a>);
<a name="l00094"></a>00094 <a class="code" href="structicmp__te__hdr.html#46d8bbce99ed85535e02dc6d18c3294a">PACK_STRUCT_FIELD</a>(<a class="code" href="types_8h.html#5847ea0262a5aa61eee48cbe95544a78">uInt32</a> <a class="code" href="structicmp__te__hdr.html#be6c4317f8e9bf39ec53546cc26f75ff">unused</a>);
<a name="l00095"></a>00095 } <a class="code" href="cc_8h.html#33623da05bb55497534c3dc26ebebeb2">PACK_STRUCT_STRUCT</a>;
<a name="l00096"></a>00096
<a name="l00097"></a><a class="code" href="ipv4_2icmp_8h.html#22fef4dade8b0b3b49651e2a2cb73c79">00097</a> <span class="preprocessor">#define ICMPH_TYPE(hdr) (NTOHS((hdr)->_type_code) >> 8)</span>
<a name="l00098"></a><a class="code" href="ipv4_2icmp_8h.html#598231bf61f3b0e9f9a3117c385e0396">00098</a> <span class="preprocessor"></span><span class="preprocessor">#define ICMPH_CODE(hdr) (NTOHS((hdr)->_type_code) & 0xff)</span>
<a name="l00099"></a>00099 <span class="preprocessor"></span>
<a name="l00100"></a><a class="code" href="ipv4_2icmp_8h.html#05b6457f9d5d496aafebe97dccb61926">00100</a> <span class="preprocessor">#define ICMPH_TYPE_SET(hdr, type) ((hdr)->_type_code = HTONS(ICMPH_CODE(hdr) | ((type) << 8)))</span>
<a name="l00101"></a><a class="code" href="ipv4_2icmp_8h.html#e69d6e0272aa0db81df1555c069cda34">00101</a> <span class="preprocessor"></span><span class="preprocessor">#define ICMPH_CODE_SET(hdr, code) ((hdr)->_type_code = HTONS((code) | (ICMPH_TYPE(hdr) << 8)))</span>
<a name="l00102"></a>00102 <span class="preprocessor"></span>
<a name="l00103"></a>00103 <span class="preprocessor">#endif </span><span class="comment">/* __LWIP_ICMP_H__ */</span>
<a name="l00104"></a>00104
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