1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>eth_header</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Linux Networking and Network Devices APIs"><link rel="up" href="netdev.html#idp1097739572" title="Driver Support"><link rel="prev" href="API-netdev-increment-features.html" title="netdev_increment_features"><link rel="next" href="API-eth-get-headlen.html" title="eth_get_headlen"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">eth_header</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-netdev-increment-features.html">Prev</a>&#160;</td><th width="60%" align="center">Driver Support</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-eth-get-headlen.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-eth-header"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>eth_header &#8212; 
2  create the Ethernet header
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <b class="fsfunc">eth_header </b>(</code></td><td>struct sk_buff * <var class="pdparam">skb</var>, </td></tr><tr><td>&#160;</td><td>struct net_device * <var class="pdparam">dev</var>, </td></tr><tr><td>&#160;</td><td>unsigned short <var class="pdparam">type</var>, </td></tr><tr><td>&#160;</td><td>const void * <var class="pdparam">daddr</var>, </td></tr><tr><td>&#160;</td><td>const void * <var class="pdparam">saddr</var>, </td></tr><tr><td>&#160;</td><td>unsigned int <var class="pdparam">len</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1098423004"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>skb</code></em></span></dt><dd><p>
4     buffer to alter
5    </p></dd><dt><span class="term"><em class="parameter"><code>dev</code></em></span></dt><dd><p>
6     source device
7    </p></dd><dt><span class="term"><em class="parameter"><code>type</code></em></span></dt><dd><p>
8     Ethernet type field
9    </p></dd><dt><span class="term"><em class="parameter"><code>daddr</code></em></span></dt><dd><p>
10     destination address (NULL leave destination address)
11    </p></dd><dt><span class="term"><em class="parameter"><code>saddr</code></em></span></dt><dd><p>
12     source address (NULL use device source address)
13    </p></dd><dt><span class="term"><em class="parameter"><code>len</code></em></span></dt><dd><p>
14     packet length (&lt;= skb-&gt;len)
15    </p></dd></dl></div></div><div class="refsect1"><a name="idp1098429748"></a><h2>Description</h2><p>
16   </p><p>
17
18   Set the protocol type. For a packet of type ETH_P_802_3/2 we put the length
19   in here instead.
20</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-netdev-increment-features.html">Prev</a>&#160;</td><td width="20%" align="center"><a accesskey="u" href="netdev.html#idp1097739572">Up</a></td><td width="40%" align="right">&#160;<a accesskey="n" href="API-eth-get-headlen.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">netdev_increment_features</span>&#160;</td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top">&#160;<span class="phrase">eth_get_headlen</span></td></tr></table></div></body></html>
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