1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>dev_open</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-notify-peers.html" title="netdev_notify_peers"><link rel="next" href="API-dev-close.html" title="dev_close"></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">dev_open</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-netdev-notify-peers.html">Prev</a>&#160;</td><th width="60%" align="center">Driver Support</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-dev-close.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-dev-open"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>dev_open &#8212; 
2     prepare an interface for use.
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">dev_open </b>(</code></td><td>struct net_device * <var class="pdparam">dev</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1097910948"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>dev</code></em></span></dt><dd><p>
4     device to open
5    </p></dd></dl></div></div><div class="refsect1"><a name="idp1097912540"></a><h2>Description</h2><p>
6   Takes a device from down to up state. The device's private open
7   function is invoked and then the multicast lists are loaded. Finally
8   the device is moved into the up state and a <code class="constant">NETDEV_UP</code> message is
9   sent to the netdev notifier chain.
10   </p><p>
11
12   Calling this function on an active interface is a nop. On a failure
13   a negative errno code is returned.
14</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-notify-peers.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-dev-close.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">netdev_notify_peers</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">dev_close</span></td></tr></table></div></body></html>
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