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<a class="el" href="dir_897b6a2d7bab147dd1db58381aad3984.html">src</a> » <a class="el" href="dir_832905b1f7f5feaf61a306b40c0ac817.html">sys</a> » <a class="el" href="dir_da977d215fccd664f66e7711fda26f76.html">net</a> » <a class="el" href="dir_becc64c1c5cdfab2e137aa1ca4b91e6b.html">netif</a></div>
<h1>loopif.c</h1><a href="loopif_8c.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: loopif_8c-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">#include "<a class="code" href="debug_8h.html">net/debug.h</a>"</span>
<a name="l00036"></a>00036 <span class="preprocessor">#include "<a class="code" href="mem_8h.html">net/mem.h</a>"</span>
<a name="l00037"></a>00037 <span class="preprocessor">#include "<a class="code" href="opt_8h.html">net/opt.h</a>"</span>
<a name="l00038"></a>00038 <span class="preprocessor">#include "<a class="code" href="loopif_8h.html">netif/loopif.h</a>"</span>
<a name="l00039"></a>00039 <span class="preprocessor">#include "<a class="code" href="tcpdump_8h.html">netif/tcpdump.h</a>"</span>
<a name="l00040"></a>00040
<a name="l00041"></a>00041 <span class="preprocessor">#include "<a class="code" href="tcp_8h.html">net/tcp.h</a>"</span>
<a name="l00042"></a>00042 <span class="preprocessor">#include "<a class="code" href="ipv4_2ip_8h.html">net/ipv4/ip.h</a>"</span>
<a name="l00043"></a>00043
<a name="l00044"></a>00044 <span class="comment">/*-----------------------------------------------------------------------------------*/</span>
<a name="l00045"></a>00045 <span class="keyword">static</span> <a class="code" href="err_8h.html#b7190f3da5c85931fc059e0312bc1407">err_t</a>
<a name="l00046"></a><a class="code" href="loopif_8c.html#72717f7b688d6aea03dacce84437632c">00046</a> <a class="code" href="loopif_8c.html#72717f7b688d6aea03dacce84437632c">loopif_output</a>(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>, <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p,
<a name="l00047"></a>00047 <span class="keyword">struct</span> <a class="code" href="structip__addr.html">ip_addr</a> *ipaddr)
<a name="l00048"></a>00048 {
<a name="l00049"></a>00049 <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *q, *r;
<a name="l00050"></a>00050 <span class="keywordtype">char</span> *ptr;
<a name="l00051"></a>00051
<a name="l00052"></a>00052 <span class="preprocessor">#ifdef LWIP_DEBUG</span>
<a name="l00053"></a>00053 <span class="preprocessor"></span> <a class="code" href="tcpdump_8h.html#41214d30ddd3c36e32b4ac0914218c19">tcpdump</a>(p);
<a name="l00054"></a>00054 <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DEBUG */</span>
<a name="l00055"></a>00055
<a name="l00056"></a>00056 r = <a class="code" href="pbuf_8h.html#bb6c8efa7f7739e71cb286c6dd4a47ef">pbuf_alloc</a>(<a class="code" href="pbuf_8h.html#ee1baa59bb2f85ba575b5a8619ac1ebf21116654fbab6d5a4dfeb87a1bb8f0ba">PBUF_RAW</a>, p-><a class="code" href="structpbuf.html#3b42932c0b26c9ff2b8fe88bd25fb127">tot_len</a>, <a class="code" href="pbuf_8h.html#b3c589840cc5a202e7278f41463f97e7c5e9f28455bca98944a030d4b84ecfab">PBUF_RAM</a>);
<a name="l00057"></a>00057 <span class="keywordflow">if</span>(r != <a class="code" href="def_8h.html#070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {
<a name="l00058"></a>00058 ptr = r-><a class="code" href="structpbuf.html#8d32dc3e964369d4eec638fc37fbc460">payload</a>;
<a name="l00059"></a>00059
<a name="l00060"></a>00060 <span class="keywordflow">for</span>(q = p; q != <a class="code" href="def_8h.html#070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>; q = q-><a class="code" href="structpbuf.html#5e5763c94fd18d78937b0b58ce7df341">next</a>) {
<a name="l00061"></a>00061 <a class="code" href="lib_8h.html#04bffce8d62dbb1e8e4e80a5fcdfed9a">bcopy</a>(q-><a class="code" href="structpbuf.html#8d32dc3e964369d4eec638fc37fbc460">payload</a>, ptr, q-><a class="code" href="structpbuf.html#238f00a0024a32992599c9d1abf9bb44">len</a>);
<a name="l00062"></a>00062 ptr += q-><a class="code" href="structpbuf.html#238f00a0024a32992599c9d1abf9bb44">len</a>;
<a name="l00063"></a>00063 }
<a name="l00064"></a>00064 netif-><a class="code" href="structnetif.html#6a3101eb624d17937618618a57e2e570">input</a>(r, netif);
<a name="l00065"></a>00065 <span class="keywordflow">return</span> <a class="code" href="err_8h.html#98c763adfeea8e9831c46ec269e47ae9">ERR_OK</a>;
<a name="l00066"></a>00066 }
<a name="l00067"></a>00067 <span class="keywordflow">return</span> <a class="code" href="err_8h.html#6ab63185cc5dff3c50c61d99bdf98369">ERR_MEM</a>;
<a name="l00068"></a>00068 }
<a name="l00069"></a>00069 <span class="comment">/*-----------------------------------------------------------------------------------*/</span>
<a name="l00070"></a>00070 <span class="keywordtype">void</span>
<a name="l00071"></a><a class="code" href="loopif_8c.html#6a09bc9672b52ada560f16b66deb76a2">00071</a> <a class="code" href="loopif_8h.html#6a09bc9672b52ada560f16b66deb76a2">loopif_init</a>(<span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *<a class="code" href="structnetif.html">netif</a>)
<a name="l00072"></a>00072 {
<a name="l00073"></a>00073 netif-><a class="code" href="structnetif.html#32fca6ffd28bb9af3f891a378827a67e">name</a>[0] = <span class="charliteral">'l'</span>;
<a name="l00074"></a>00074 netif-><a class="code" href="structnetif.html#32fca6ffd28bb9af3f891a378827a67e">name</a>[1] = <span class="charliteral">'o'</span>;
<a name="l00075"></a>00075 netif-><a class="code" href="structnetif.html#b180ab98b90830ed15503822405e5a23">output</a> = <a class="code" href="loopif_8c.html#72717f7b688d6aea03dacce84437632c">loopif_output</a>;
<a name="l00076"></a>00076 }
<a name="l00077"></a>00077 <span class="comment">/*-----------------------------------------------------------------------------------*/</span>
<a name="l00078"></a>00078
<a name="l00079"></a>00079
<a name="l00080"></a>00080
<a name="l00081"></a>00081
<a name="l00082"></a>00082
<a name="l00083"></a>00083
<a name="l00084"></a>00084
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