1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>dev_forward_skb</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-call-netdevice-notifiers.html" title="call_netdevice_notifiers"><link rel="next" href="API-netif-set-real-num-rx-queues.html" title="netif_set_real_num_rx_queues"></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_forward_skb</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-call-netdevice-notifiers.html">Prev</a>&#160;</td><th width="60%" align="center">Driver Support</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-netif-set-real-num-rx-queues.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-dev-forward-skb"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>dev_forward_skb &#8212; 
2     loopback an skb to another netif
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_forward_skb </b>(</code></td><td>struct net_device * <var class="pdparam">dev</var>, </td></tr><tr><td>&#160;</td><td>struct sk_buff * <var class="pdparam">skb</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1097957972"></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     destination network device
5    </p></dd><dt><span class="term"><em class="parameter"><code>skb</code></em></span></dt><dd><p>
6     buffer to forward
7    </p></dd></dl></div></div><div class="refsect1"><a name="idp1097960548"></a><h2>return values</h2><p>
8   NET_RX_SUCCESS	(no congestion)
9   NET_RX_DROP     (packet was dropped, but freed)
10   </p><p>
11
12   dev_forward_skb can be used for injecting an skb from the
13   start_xmit function of one device into the receive queue
14   of another device.
15   </p><p>
16
17   The receiving device may be in another namespace, so
18   we have to clear all information in the skb that could
19   impact namespace isolation.
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-call-netdevice-notifiers.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-netif-set-real-num-rx-queues.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">call_netdevice_notifiers</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">netif_set_real_num_rx_queues</span></td></tr></table></div></body></html>
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