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<h1>lwipopts.h</h1><a href="lwipopts_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 &lt;adam@sics.se&gt;</span>
<a name="l00032"></a>00032 <span class="comment"> *</span>
<a name="l00033"></a>00033 <span class="comment"> * $Id: lwipopts_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 __LWIPOPTS_H__</span>
<a name="l00036"></a>00036 <span class="preprocessor"></span><span class="preprocessor">#define __LWIPOPTS_H__</span>
<a name="l00037"></a>00037 <span class="preprocessor"></span>
<a name="l00038"></a>00038 <span class="comment">/* ---------- Memory options ---------- */</span>
<a name="l00039"></a>00039 <span class="comment">/* MEM_ALIGNMENT: should be set to the alignment of the CPU for which</span>
<a name="l00040"></a>00040 <span class="comment">   lwIP is compiled. 4 byte alignment -&gt; define MEM_ALIGNMENT to 4, 2</span>
<a name="l00041"></a>00041 <span class="comment">   byte alignment -&gt; define MEM_ALIGNMENT to 2. */</span>
<a name="l00042"></a><a class="code" href="lwipopts_8h.html#97343214666ee6dcb18c0bd77b441ea7">00042</a> <span class="preprocessor">#define MEM_ALIGNMENT           2</span>
<a name="l00043"></a>00043 <span class="preprocessor"></span>
<a name="l00044"></a>00044 <span class="comment">/* MEM_SIZE: the size of the heap memory. If the application will send</span>
<a name="l00045"></a>00045 <span class="comment">a lot of data that needs to be copied, this should be set high. */</span>
<a name="l00046"></a><a class="code" href="lwipopts_8h.html#2dcf8c45f945dd0c4301a94700f2112c">00046</a> <span class="preprocessor">#define MEM_SIZE                1000</span>
<a name="l00047"></a>00047 <span class="preprocessor"></span>
<a name="l00048"></a>00048 <span class="comment">/* MEMP_NUM_PBUF: the number of memp struct pbufs. If the application</span>
<a name="l00049"></a>00049 <span class="comment">   sends a lot of data out of ROM (or other static memory), this</span>
<a name="l00050"></a>00050 <span class="comment">   should be set high. */</span>
<a name="l00051"></a><a class="code" href="lwipopts_8h.html#92b30aed958ec59334d936d4ca725418">00051</a> <span class="preprocessor">#define MEMP_NUM_PBUF           8</span>
<a name="l00052"></a>00052 <span class="preprocessor"></span><span class="comment">/* MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One</span>
<a name="l00053"></a>00053 <span class="comment">   per active UDP "connection". */</span>
<a name="l00054"></a><a class="code" href="lwipopts_8h.html#2c416da481ab09bd1ba257b75a0707eb">00054</a> <span class="preprocessor">#define MEMP_NUM_UDP_PCB        4</span>
<a name="l00055"></a>00055 <span class="preprocessor"></span><span class="comment">/* MEMP_NUM_TCP_PCB: the number of simulatenously active TCP</span>
<a name="l00056"></a>00056 <span class="comment">   connections. */</span>
<a name="l00057"></a><a class="code" href="lwipopts_8h.html#73beecc19cfbc3114768f9b32b2cd70e">00057</a> <span class="preprocessor">#define MEMP_NUM_TCP_PCB        5</span>
<a name="l00058"></a>00058 <span class="preprocessor"></span><span class="comment">/* MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP</span>
<a name="l00059"></a>00059 <span class="comment">   connections. */</span>
<a name="l00060"></a><a class="code" href="lwipopts_8h.html#04fba6a249123513271dccb4ec26aa5a">00060</a> <span class="preprocessor">#define MEMP_NUM_TCP_PCB_LISTEN 8</span>
<a name="l00061"></a>00061 <span class="preprocessor"></span><span class="comment">/* MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP</span>
<a name="l00062"></a>00062 <span class="comment">   segments. */</span>
<a name="l00063"></a><a class="code" href="lwipopts_8h.html#a35fb3a1a76661e3ffb9722a57092de3">00063</a> <span class="preprocessor">#define MEMP_NUM_TCP_SEG        8</span>
<a name="l00064"></a>00064 <span class="preprocessor"></span><span class="comment">/* MEMP_NUM_SYS_TIMEOUT: the number of simulateously active</span>
<a name="l00065"></a>00065 <span class="comment">   timeouts. */</span>
<a name="l00066"></a><a class="code" href="lwipopts_8h.html#4afbdca581a58d57bc7a81118a95327e">00066</a> <span class="preprocessor">#define MEMP_NUM_SYS_TIMEOUT    3</span>
<a name="l00067"></a>00067 <span class="preprocessor"></span>
<a name="l00068"></a>00068 
<a name="l00069"></a>00069 <span class="comment">/* The following four are used only with the sequential API and can be</span>
<a name="l00070"></a>00070 <span class="comment">   set to 0 if the application only will use the raw API. */</span>
<a name="l00071"></a>00071 <span class="comment">/* MEMP_NUM_NETBUF: the number of struct netbufs. */</span>
<a name="l00072"></a><a class="code" href="lwipopts_8h.html#5d99df65869ac101ed6a611fc85016be">00072</a> <span class="preprocessor">#define MEMP_NUM_NETBUF         2</span>
<a name="l00073"></a>00073 <span class="preprocessor"></span><span class="comment">/* MEMP_NUM_NETCONN: the number of struct netconns. */</span>
<a name="l00074"></a><a class="code" href="lwipopts_8h.html#cb40bd726b7e15593b20a628d298f456">00074</a> <span class="preprocessor">#define MEMP_NUM_NETCONN        4</span>
<a name="l00075"></a>00075 <span class="preprocessor"></span><span class="comment">/* MEMP_NUM_APIMSG: the number of struct api_msg, used for</span>
<a name="l00076"></a>00076 <span class="comment">   communication between the TCP/IP stack and the sequential</span>
<a name="l00077"></a>00077 <span class="comment">   programs. */</span>
<a name="l00078"></a><a class="code" href="lwipopts_8h.html#5a95abf3610c56e7c23cb035eb9c3444">00078</a> <span class="preprocessor">#define MEMP_NUM_API_MSG        8</span>
<a name="l00079"></a>00079 <span class="preprocessor"></span><span class="comment">/* MEMP_NUM_TCPIPMSG: the number of struct tcpip_msg, which is used</span>
<a name="l00080"></a>00080 <span class="comment">   for sequential API communication and incoming packets. Used in</span>
<a name="l00081"></a>00081 <span class="comment">   src/api/tcpip.c. */</span>
<a name="l00082"></a><a class="code" href="lwipopts_8h.html#0e484533571a0414bf08a6ce1337059d">00082</a> <span class="preprocessor">#define MEMP_NUM_TCPIP_MSG      8</span>
<a name="l00083"></a>00083 <span class="preprocessor"></span>
<a name="l00084"></a>00084 <span class="comment">/* These two control is reclaimer functions should be compiled</span>
<a name="l00085"></a>00085 <span class="comment">   in. Should always be turned on (1). */</span>
<a name="l00086"></a><a class="code" href="lwipopts_8h.html#092063cd8a3a133cb55ad623ee69f440">00086</a> <span class="preprocessor">#define MEM_RECLAIM             1</span>
<a name="l00087"></a><a class="code" href="lwipopts_8h.html#c96d15536aaa9e0058d2e6e67bf1ac8b">00087</a> <span class="preprocessor"></span><span class="preprocessor">#define MEMP_RECLAIM            1</span>
<a name="l00088"></a>00088 <span class="preprocessor"></span>
<a name="l00089"></a>00089 <span class="comment">/* ---------- Pbuf options ---------- */</span>
<a name="l00090"></a>00090 <span class="comment">/* PBUF_POOL_SIZE: the number of buffers in the pbuf pool. */</span>
<a name="l00091"></a><a class="code" href="lwipopts_8h.html#50eaadc4cad0716410332691e382c38a">00091</a> <span class="preprocessor">#define PBUF_POOL_SIZE          6</span>
<a name="l00092"></a>00092 <span class="preprocessor"></span>
<a name="l00093"></a>00093 <span class="comment">/* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */</span>
<a name="l00094"></a><a class="code" href="lwipopts_8h.html#e61f4491d56e805e79b79eb5d35a00e5">00094</a> <span class="preprocessor">#define PBUF_POOL_BUFSIZE       128</span>
<a name="l00095"></a>00095 <span class="preprocessor"></span>
<a name="l00096"></a>00096 <span class="comment">/* PBUF_LINK_HLEN: the number of bytes that should be allocated for a</span>
<a name="l00097"></a>00097 <span class="comment">   link level header. */</span>
<a name="l00098"></a><a class="code" href="lwipopts_8h.html#35998a3d56af9940e6a80bb372597685">00098</a> <span class="preprocessor">#define PBUF_LINK_HLEN          16</span>
<a name="l00099"></a>00099 <span class="preprocessor"></span>
<a name="l00100"></a>00100 <span class="comment">/* ---------- TCP options ---------- */</span>
<a name="l00101"></a><a class="code" href="lwipopts_8h.html#a4ed98deb97b77c633cb8870f34c71e9">00101</a> <span class="preprocessor">#define LWIP_TCP                1</span>
<a name="l00102"></a><a class="code" href="lwipopts_8h.html#cd5b25ea81d2894790d25da5393cdab4">00102</a> <span class="preprocessor"></span><span class="preprocessor">#define TCP_TTL                 255</span>
<a name="l00103"></a>00103 <span class="preprocessor"></span>
<a name="l00104"></a>00104 <span class="comment">/* Controls if TCP should queue segments that arrive out of</span>
<a name="l00105"></a>00105 <span class="comment">   order. Define to 0 if your device is low on memory. */</span>
<a name="l00106"></a><a class="code" href="lwipopts_8h.html#89ffd0d7d1529bdb26bfbad267d0ad75">00106</a> <span class="preprocessor">#define TCP_QUEUE_OOSEQ         1</span>
<a name="l00107"></a>00107 <span class="preprocessor"></span>
<a name="l00108"></a>00108 <span class="comment">/* TCP Maximum segment size. */</span>
<a name="l00109"></a><a class="code" href="lwipopts_8h.html#f1ab7bb27860aa3677c387a2f3ba317b">00109</a> <span class="preprocessor">#define TCP_MSS                 128</span>
<a name="l00110"></a>00110 <span class="preprocessor"></span>
<a name="l00111"></a>00111 <span class="comment">/* TCP sender buffer space (bytes). */</span>
<a name="l00112"></a><a class="code" href="lwipopts_8h.html#871d111968d8c6c7880ff36b93c5c4dd">00112</a> <span class="preprocessor">#define TCP_SND_BUF             256</span>
<a name="l00113"></a>00113 <span class="preprocessor"></span>
<a name="l00114"></a>00114 <span class="comment">/* TCP sender buffer space (pbufs). This must be at least = 2 *</span>
<a name="l00115"></a>00115 <span class="comment">   TCP_SND_BUF/TCP_MSS for things to work. */</span>
<a name="l00116"></a><a class="code" href="lwipopts_8h.html#9beaa47832ead4180981bfbf71074904">00116</a> <span class="preprocessor">#define TCP_SND_QUEUELEN        4 * TCP_SND_BUF/TCP_MSS</span>
<a name="l00117"></a>00117 <span class="preprocessor"></span>
<a name="l00118"></a>00118 <span class="comment">/* TCP receive window. */</span>
<a name="l00119"></a><a class="code" href="lwipopts_8h.html#7f535a6efb5cdf86c3210e35ece1d6a7">00119</a> <span class="preprocessor">#define TCP_WND                 1024</span>
<a name="l00120"></a>00120 <span class="preprocessor"></span>
<a name="l00121"></a>00121 <span class="comment">/* Maximum number of retransmissions of data segments. */</span>
<a name="l00122"></a><a class="code" href="lwipopts_8h.html#0dee0911197855bdf19ef79778c241a6">00122</a> <span class="preprocessor">#define TCP_MAXRTX              12</span>
<a name="l00123"></a>00123 <span class="preprocessor"></span>
<a name="l00124"></a>00124 <span class="comment">/* Maximum number of retransmissions of SYN segments. */</span>
<a name="l00125"></a><a class="code" href="lwipopts_8h.html#50b434a8541a4813f7b27f576c05d1b6">00125</a> <span class="preprocessor">#define TCP_SYNMAXRTX           4</span>
<a name="l00126"></a>00126 <span class="preprocessor"></span>
<a name="l00127"></a>00127 <span class="comment">/* ---------- ARP options ---------- */</span>
<a name="l00128"></a><a class="code" href="lwipopts_8h.html#924936a814564dbdb0bc950d255a83b9">00128</a> <span class="preprocessor">#define ARP_TABLE_SIZE 10</span>
<a name="l00129"></a>00129 <span class="preprocessor"></span>
<a name="l00130"></a>00130 <span class="comment">/* ---------- IP options ---------- */</span>
<a name="l00131"></a>00131 <span class="comment">/* Define IP_FORWARD to 1 if you wish to have the ability to forward</span>
<a name="l00132"></a>00132 <span class="comment">   IP packets across network interfaces. If you are going to run lwIP</span>
<a name="l00133"></a>00133 <span class="comment">   on a device with only one network interface, define this to 0. */</span>
<a name="l00134"></a><a class="code" href="lwipopts_8h.html#881d32ff5ee02af01f758953f1b51d59">00134</a> <span class="preprocessor">#define IP_FORWARD              1</span>
<a name="l00135"></a>00135 <span class="preprocessor"></span>
<a name="l00136"></a>00136 <span class="comment">/* If defined to 1, IP options are allowed (but not parsed). If</span>
<a name="l00137"></a>00137 <span class="comment">   defined to 0, all packets with IP options are dropped. */</span>
<a name="l00138"></a><a class="code" href="lwipopts_8h.html#c125a06d135555bed70eed821a697e66">00138</a> <span class="preprocessor">#define IP_OPTIONS              1</span>
<a name="l00139"></a>00139 <span class="preprocessor"></span>
<a name="l00140"></a>00140 <span class="comment">/* ---------- ICMP options ---------- */</span>
<a name="l00141"></a><a class="code" href="lwipopts_8h.html#e1533f2bc39a5843989909555f6ce0cf">00141</a> <span class="preprocessor">#define ICMP_TTL                255</span>
<a name="l00142"></a>00142 <span class="preprocessor"></span>
<a name="l00143"></a>00143 
<a name="l00144"></a>00144 <span class="comment">/* ---------- DHCP options ---------- */</span>
<a name="l00145"></a>00145 <span class="comment">/* Define LWIP_DHCP to 1 if you want DHCP configuration of</span>
<a name="l00146"></a>00146 <span class="comment">   interfaces. DHCP is not implemented in lwIP 0.5.1, however, so</span>
<a name="l00147"></a>00147 <span class="comment">   turning this on does currently not work. */</span>
<a name="l00148"></a><a class="code" href="lwipopts_8h.html#8a6ec62dc121064ac591b1fd8567bee9">00148</a> <span class="preprocessor">#define LWIP_DHCP               0</span>
<a name="l00149"></a>00149 <span class="preprocessor"></span>
<a name="l00150"></a>00150 <span class="comment">/* 1 if you want to do an ARP check on the offered address</span>
<a name="l00151"></a>00151 <span class="comment">   (recommended). */</span>
<a name="l00152"></a><a class="code" href="lwipopts_8h.html#b2d91de7b2fce879b0a213682e1b0b69">00152</a> <span class="preprocessor">#define DHCP_DOES_ARP_CHECK     1</span>
<a name="l00153"></a>00153 <span class="preprocessor"></span>
<a name="l00154"></a>00154 <span class="comment">/* ---------- UDP options ---------- */</span>
<a name="l00155"></a><a class="code" href="lwipopts_8h.html#b6030e96e72df649d2650fd32d7a67b3">00155</a> <span class="preprocessor">#define LWIP_UDP                1</span>
<a name="l00156"></a><a class="code" href="lwipopts_8h.html#97908a317bcba89174b5d1ccbdca0096">00156</a> <span class="preprocessor"></span><span class="preprocessor">#define UDP_TTL                 255</span>
<a name="l00157"></a>00157 <span class="preprocessor"></span>
<a name="l00158"></a>00158 
<a name="l00159"></a>00159 <span class="comment">/* ---------- Statistics options ---------- */</span>
<a name="l00160"></a><a class="code" href="lwipopts_8h.html#d56ac02048a828d5401f884bbbe846ab">00160</a> <span class="preprocessor">#define STATS</span>
<a name="l00161"></a>00161 <span class="preprocessor"></span>
<a name="l00162"></a>00162 <span class="preprocessor">#ifdef STATS</span>
<a name="l00163"></a><a class="code" href="lwipopts_8h.html#e58b452782d0327ae728192686c5a84a">00163</a> <span class="preprocessor"></span><span class="preprocessor">#define LINK_STATS</span>
<a name="l00164"></a><a class="code" href="lwipopts_8h.html#f50575a4895e26ea2c01d1f2269487be">00164</a> <span class="preprocessor"></span><span class="preprocessor">#define IP_STATS</span>
<a name="l00165"></a><a class="code" href="lwipopts_8h.html#472ad3f6da741f5b287d66ad3051242b">00165</a> <span class="preprocessor"></span><span class="preprocessor">#define ICMP_STATS</span>
<a name="l00166"></a><a class="code" href="lwipopts_8h.html#ef64b11bf71f0d6d5bafaf6092462276">00166</a> <span class="preprocessor"></span><span class="preprocessor">#define UDP_STATS</span>
<a name="l00167"></a><a class="code" href="lwipopts_8h.html#a02ec5c5bc0edebe418680c54d044f58">00167</a> <span class="preprocessor"></span><span class="preprocessor">#define TCP_STATS</span>
<a name="l00168"></a><a class="code" href="lwipopts_8h.html#61ec04a08c4fde690d10819e582656a7">00168</a> <span class="preprocessor"></span><span class="preprocessor">#define MEM_STATS</span>
<a name="l00169"></a><a class="code" href="lwipopts_8h.html#b8c2430be0e567a7499a95454aaa6041">00169</a> <span class="preprocessor"></span><span class="preprocessor">#define MEMP_STATS</span>
<a name="l00170"></a><a class="code" href="lwipopts_8h.html#5603346288157af5c6f0e01a08ad4000">00170</a> <span class="preprocessor"></span><span class="preprocessor">#define PBUF_STATS</span>
<a name="l00171"></a><a class="code" href="lwipopts_8h.html#0173549afa76553583e5a02c6a791218">00171</a> <span class="preprocessor"></span><span class="preprocessor">#define SYS_STATS</span>
<a name="l00172"></a>00172 <span class="preprocessor"></span><span class="preprocessor">#endif </span><span class="comment">/* STATS */</span>
<a name="l00173"></a>00173 
<a name="l00174"></a>00174 <span class="preprocessor">#endif </span><span class="comment">/* __LWIPOPTS_H__ */</span>
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