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3.5 KiB
HTML
69 lines
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
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<title>uIP 1.0: Variables used in uIP device drivers</title>
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<link href="doxygen.css" rel="stylesheet" type="text/css">
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<link href="tabs.css" rel="stylesheet" type="text/css">
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</head><body>
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<!-- Generated by Doxygen 1.4.6 -->
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<div class="tabs">
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<ul>
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<li><a href="main.html"><span>Main Page</span></a></li>
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<li><a href="modules.html"><span>Modules</span></a></li>
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<li><a href="classes.html"><span>Data Structures</span></a></li>
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<li><a href="files.html"><span>Files</span></a></li>
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<li><a href="examples.html"><span>Examples</span></a></li>
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</ul></div>
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<h1>Variables used in uIP device drivers<br>
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<small>
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[<a class="el" href="a00150.html">The uIP TCP/IP stack</a>]</small>
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</h1><hr><a name="_details"></a><h2>Detailed Description</h2>
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uIP has a few global variables that are used in device drivers for uIP.
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<p>
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<p>
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<table border="0" cellpadding="0" cellspacing="0">
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<tr><td></td></tr>
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<tr><td colspan="2"><br><h2>Variables</h2></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="a00153.html#g77570ac4fcab86864fa1916e55676da2">u16_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00149.html#g12a33f0c09711167bdf3dd7d7cf8c5a1">uip_len</a></td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">The length of the packet in the uip_buf buffer. <a href="#g12a33f0c09711167bdf3dd7d7cf8c5a1"></a><br></td></tr>
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</table>
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<hr><h2>Variable Documentation</h2>
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<a class="anchor" name="g12a33f0c09711167bdf3dd7d7cf8c5a1"></a><!-- doxytag: member="uip.h::uip_len" ref="g12a33f0c09711167bdf3dd7d7cf8c5a1" args="" --><p>
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<td class="md" nowrap valign="top"><a class="el" href="a00153.html#g77570ac4fcab86864fa1916e55676da2">u16_t</a> <a class="el" href="a00150.html#g12a33f0c09711167bdf3dd7d7cf8c5a1">uip_len</a> </td>
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<p>
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The length of the packet in the uip_buf buffer.
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<p>
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The global variable uip_len holds the length of the packet in the uip_buf buffer.<p>
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When the network device driver calls the uIP input function, uip_len should be set to the length of the packet in the uip_buf buffer.<p>
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When sending packets, the device driver should use the contents of the uip_len variable to determine the length of the outgoing packet. <dl compact><dt><b>Examples: </b></dt><dd>
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<a class="el" href="a00042.html#a68">example-mainloop-with-arp.c</a>, and <a class="el" href="a00043.html#a92">example-mainloop-without-arp.c</a>.</dl>
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<p>
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Definition at line <a class="el" href="a00201.html#l00155">155</a> of file <a class="el" href="a00201.html">uip.c</a>.
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<p>
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Referenced by <a class="el" href="a00204.html#l00278">uip_arp_arpin()</a>, <a class="el" href="a00201.html#l00682">uip_process()</a>, and <a class="el" href="a00199.html#l00049">uip_split_output()</a>. </td>
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</tr>
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</table>
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<hr size="1"><address style="align: right;"><small>Generated on Mon Jun 12 10:23:02 2006 for uIP 1.0 by
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<a href="http://www.doxygen.org/index.html">
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.6 </small></address>
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</body>
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</html>
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