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| <div id="projectbrief">Lightweight IP stack</div> |
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| <div class="textblock"><code>#include "<a class="el" href="opt_8h.html">lwip/opt.h</a>"</code><br /> |
| <code>#include "<a class="el" href="icmp_8h.html">lwip/icmp.h</a>"</code><br /> |
| <code>#include "<a class="el" href="inet__chksum_8h.html">lwip/inet_chksum.h</a>"</code><br /> |
| <code>#include "<a class="el" href="ip_8h.html">lwip/ip.h</a>"</code><br /> |
| <code>#include "<a class="el" href="def_8h.html">lwip/def.h</a>"</code><br /> |
| <code>#include "<a class="el" href="stats_8h.html">lwip/stats.h</a>"</code><br /> |
| <code>#include <string.h></code><br /> |
| <code>#include "path/to/my/lwip_hooks.h"</code><br /> |
| </div><table class="memberdecls"> |
| <tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="define-members" name="define-members"></a> |
| Macros</h2></td></tr> |
| <tr class="memitem:a6b9fd6be0a7dcf301bc86b9e96e3857e" id="r_a6b9fd6be0a7dcf301bc86b9e96e3857e"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="#a6b9fd6be0a7dcf301bc86b9e96e3857e">LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN</a>   1</td></tr> |
| <tr class="separator:a6b9fd6be0a7dcf301bc86b9e96e3857e"><td class="memSeparator" colspan="2"> </td></tr> |
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| <tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a> |
| Functions</h2></td></tr> |
| <tr class="memitem:ac929e48a1dddf98050b73a2633fcaef1" id="r_ac929e48a1dddf98050b73a2633fcaef1"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="#ac929e48a1dddf98050b73a2633fcaef1">icmp_input</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *p, struct <a class="el" href="structnetif.html">netif</a> *inp)</td></tr> |
| <tr class="separator:ac929e48a1dddf98050b73a2633fcaef1"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:ae26c59eab4ce553964a0c9d43f534d06" id="r_ae26c59eab4ce553964a0c9d43f534d06"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="#ae26c59eab4ce553964a0c9d43f534d06">icmp_dest_unreach</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *p, enum <a class="el" href="icmp_8h.html#a17637465f209385e5d19ef47fd9266a5">icmp_dur_type</a> t)</td></tr> |
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| </table> |
| <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2> |
| <div class="textblock"><p>ICMP - Internet Control Message Protocol </p> |
| </div><h2 class="groupheader">Macro Definition Documentation</h2> |
| <a id="a6b9fd6be0a7dcf301bc86b9e96e3857e" name="a6b9fd6be0a7dcf301bc86b9e96e3857e"></a> |
| <h2 class="memtitle"><span class="permalink"><a href="#a6b9fd6be0a7dcf301bc86b9e96e3857e">◆ </a></span>LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN</h2> |
| |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">#define LWIP_ICMP_ECHO_CHECK_INPUT_PBUF_LEN   1</td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| <p>Small optimization: set to 0 if incoming PBUF_POOL pbuf always can be used to modify and send a response packet (and to 1 if this is not the case, e.g. when link header is stripped off when receiving) </p> |
| |
| </div> |
| </div> |
| <h2 class="groupheader">Function Documentation</h2> |
| <a id="ae26c59eab4ce553964a0c9d43f534d06" name="ae26c59eab4ce553964a0c9d43f534d06"></a> |
| <h2 class="memtitle"><span class="permalink"><a href="#ae26c59eab4ce553964a0c9d43f534d06">◆ </a></span>icmp_dest_unreach()</h2> |
| |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">void icmp_dest_unreach </td> |
| <td>(</td> |
| <td class="paramtype">struct <a class="el" href="structpbuf.html">pbuf</a> *</td> <td class="paramname"><span class="paramname"><em>p</em></span>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">enum <a class="el" href="icmp_8h.html#a17637465f209385e5d19ef47fd9266a5">icmp_dur_type</a></td> <td class="paramname"><span class="paramname"><em>t</em></span> )</td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| <p>Send an icmp 'destination unreachable' packet, called from <a class="el" href="group__lwip__nosys.html#ga3c420dab0c6760df099a2d688fa42a26">ip_input()</a> if the transport layer protocol is unknown and from <a class="el" href="udp_8c.html#a7b338a5515606bd51976fbc5bcec9611">udp_input()</a> if the local port is not bound.</p> |
| <dl class="params"><dt>Parameters</dt><dd> |
| <table class="params"> |
| <tr><td class="paramname">p</td><td>the input packet for which the 'unreachable' should be sent, p->payload pointing to the IP header </td></tr> |
| <tr><td class="paramname">t</td><td>type of the 'unreachable' packet </td></tr> |
| </table> |
| </dd> |
| </dl> |
| |
| </div> |
| </div> |
| <a id="ac929e48a1dddf98050b73a2633fcaef1" name="ac929e48a1dddf98050b73a2633fcaef1"></a> |
| <h2 class="memtitle"><span class="permalink"><a href="#ac929e48a1dddf98050b73a2633fcaef1">◆ </a></span>icmp_input()</h2> |
| |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">void icmp_input </td> |
| <td>(</td> |
| <td class="paramtype">struct <a class="el" href="structpbuf.html">pbuf</a> *</td> <td class="paramname"><span class="paramname"><em>p</em></span>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">struct <a class="el" href="structnetif.html">netif</a> *</td> <td class="paramname"><span class="paramname"><em>inp</em></span> )</td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| <p>Processes ICMP input packets, called from <a class="el" href="group__lwip__nosys.html#ga3c420dab0c6760df099a2d688fa42a26">ip_input()</a>.</p> |
| <p>Currently only processes icmp echo requests and sends out the echo response.</p> |
| <dl class="params"><dt>Parameters</dt><dd> |
| <table class="params"> |
| <tr><td class="paramname">p</td><td>the icmp echo request packet, p->payload pointing to the icmp header </td></tr> |
| <tr><td class="paramname">inp</td><td>the netif on which this packet was received </td></tr> |
| </table> |
| </dd> |
| </dl> |
| |
| </div> |
| </div> |
| <a id="a49723e5e11c4bbc86197e58fdca7c119" name="a49723e5e11c4bbc86197e58fdca7c119"></a> |
| <h2 class="memtitle"><span class="permalink"><a href="#a49723e5e11c4bbc86197e58fdca7c119">◆ </a></span>icmp_time_exceeded()</h2> |
| |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">void icmp_time_exceeded </td> |
| <td>(</td> |
| <td class="paramtype">struct <a class="el" href="structpbuf.html">pbuf</a> *</td> <td class="paramname"><span class="paramname"><em>p</em></span>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">enum <a class="el" href="icmp_8h.html#a058d0a0769bd38db99fc6fd1dad1324a">icmp_te_type</a></td> <td class="paramname"><span class="paramname"><em>t</em></span> )</td> |
| </tr> |
| </table> |
| </div><div class="memdoc"> |
| <p>Send a 'time exceeded' packet, called from ip_forward() if TTL is 0.</p> |
| <dl class="params"><dt>Parameters</dt><dd> |
| <table class="params"> |
| <tr><td class="paramname">p</td><td>the input packet for which the 'time exceeded' should be sent, p->payload pointing to the IP header </td></tr> |
| <tr><td class="paramname">t</td><td>type of the 'time exceeded' packet </td></tr> |
| </table> |
| </dd> |
| </dl> |
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