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<title>uIP 1.0: uip/uip_arp.c File Reference</title>
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<h1>uip/uip_arp.c File Reference</h1><hr><a name="_details"></a><h2>Detailed Description</h2>
Implementation of the ARP Address Resolution Protocol. 
<p>
<dl compact><dt><b>Author:</b></dt><dd>Adam Dunkels &lt;<a href="mailto:adam@dunkels.com">adam@dunkels.com</a>&gt; </dd></dl>

<p>
Definition in file <a class="el" href="a00204.html">uip_arp.c</a>.
<p>
<code>#include &quot;<a class="el" href="a00205.html">uip_arp.h</a>&quot;</code><br>
<code>#include &lt;string.h&gt;</code><br>

<p>
<a href="a00204.html">Go to the source code of this file.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Defines</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="g7a7c46ffaba30477b8c9e3e61bd2e106"></a><!-- doxytag: member="uip_arp.c::ARP_REQUEST" ref="g7a7c46ffaba30477b8c9e3e61bd2e106" args="" -->
#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00152.html#g7a7c46ffaba30477b8c9e3e61bd2e106">ARP_REQUEST</a>&nbsp;&nbsp;&nbsp;1</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="g06ba7b414e718081998f2814090debf1"></a><!-- doxytag: member="uip_arp.c::ARP_REPLY" ref="g06ba7b414e718081998f2814090debf1" args="" -->
#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00152.html#g06ba7b414e718081998f2814090debf1">ARP_REPLY</a>&nbsp;&nbsp;&nbsp;2</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="gbb56b549f7ab4d86e1cc39b8afc70d1e"></a><!-- doxytag: member="uip_arp.c::ARP_HWTYPE_ETH" ref="gbb56b549f7ab4d86e1cc39b8afc70d1e" args="" -->
#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00152.html#gbb56b549f7ab4d86e1cc39b8afc70d1e">ARP_HWTYPE_ETH</a>&nbsp;&nbsp;&nbsp;1</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="g24f52ac52d6e714cb04a5aa01be3bdd0"></a><!-- doxytag: member="uip_arp.c::BUF" ref="g24f52ac52d6e714cb04a5aa01be3bdd0" args="" -->
#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00152.html#g24f52ac52d6e714cb04a5aa01be3bdd0">BUF</a>&nbsp;&nbsp;&nbsp;((struct arp_hdr *)&amp;<a class="el" href="a00150.html#gb81e78f890dbbee50c533a9734b74fd9">uip_buf</a>[0])</td></tr>

<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="g9f2196e2705036869611962425e404bf"></a><!-- doxytag: member="uip_arp.c::IPBUF" ref="g9f2196e2705036869611962425e404bf" args="" -->
#define&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00152.html#g9f2196e2705036869611962425e404bf">IPBUF</a>&nbsp;&nbsp;&nbsp;((struct ethip_hdr *)&amp;<a class="el" href="a00150.html#gb81e78f890dbbee50c533a9734b74fd9">uip_buf</a>[0])</td></tr>

<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="g2d9d28afa353f662b9bb5234fc419f72"></a><!-- doxytag: member="uip_arp.c::uip_arp_init" ref="g2d9d28afa353f662b9bb5234fc419f72" args="(void)" -->
void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00152.html#g2d9d28afa353f662b9bb5234fc419f72">uip_arp_init</a> (void)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Initialize the ARP module. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00152.html#g058a8e6025f67b021862281f1911fcef">uip_arp_timer</a> (void)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Periodic ARP processing function.  <a href="a00152.html#g058a8e6025f67b021862281f1911fcef"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00152.html#g902c4a360134096224bc2655f623aa5f">uip_arp_arpin</a> (void)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">ARP processing for incoming ARP packets.  <a href="a00152.html#g902c4a360134096224bc2655f623aa5f"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00152.html#g54b27e45df15e10a0eb1a3e3a91417d2">uip_arp_out</a> (void)</td></tr>

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Prepend Ethernet header to an outbound IP packet and see if we need to send out an ARP request.  <a href="a00152.html#g54b27e45df15e10a0eb1a3e3a91417d2"></a><br></td></tr>
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