1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>register_netdevice_notifier</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-dev-disable-lro.html" title="dev_disable_lro"><link rel="next" href="API-unregister-netdevice-notifier.html" title="unregister_netdevice_notifier"></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">register_netdevice_notifier</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-dev-disable-lro.html">Prev</a>&#160;</td><th width="60%" align="center">Driver Support</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-unregister-netdevice-notifier.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-register-netdevice-notifier"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>register_netdevice_notifier &#8212; 
2     register a network notifier block
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">register_netdevice_notifier </b>(</code></td><td>struct notifier_block * <var class="pdparam">nb</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1097933196"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>nb</code></em></span></dt><dd><p>
4     notifier
5    </p></dd></dl></div></div><div class="refsect1"><a name="idp1097934780"></a><h2>Description</h2><p>
6   Register a notifier to be called when network device events occur.
7   The notifier passed is linked into the kernel structures and must
8   not be reused until it has been unregistered. A negative errno code
9   is returned on a failure.
10   </p><p>
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12   When registered all registration and up events are replayed
13   to the new notifier to allow device to have a race free
14   view of the network device list.
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