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+<table class="head">
+ <tr>
+ <td class="head-ltitle">NFE(4)</td>
+ <td class="head-vol">Device Drivers Manual</td>
+ <td class="head-rtitle">NFE(4)</td>
+ </tr>
+</table>
+<div class="manual-text">
+<section class="Sh">
+<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
+<p class="Pp"><code class="Nm">nfe</code> &#x2014; <span class="Nd">NVIDIA
+ nForce MCP Ethernet driver</span></p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
+<p class="Pp">To compile this driver into the kernel, place the following lines
+ in your kernel configuration file:</p>
+<div class="Bd Pp Bd-indent"><code class="Cd">device miibus</code>
+<br/>
+<code class="Cd">device nfe</code></div>
+<p class="Pp">Alternatively, to load the driver as a module at boot time, place
+ the following line in <a class="Xr">loader.conf(5)</a>:</p>
+<div class="Bd Pp Bd-indent Li">
+<pre>if_nfe_load=&quot;YES&quot;</pre>
+</div>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
+<p class="Pp">The <code class="Nm">nfe</code> driver supports PCI Ethernet
+ adapters based on the NVIDIA nForce Media and Communications Processors
+ (MCP), such as the nForce, nForce 2, nForce 3, CK804, MCP04, MCP51, MCP55,
+ MCP61, MCP65, MCP67, MCP73, MCP77 and MCP79 Ethernet controller chips.</p>
+<p class="Pp">Supported features include (hardware support provided):</p>
+<p class="Pp"></p>
+<ul class="Bl-bullet Bl-compact">
+ <li>Receive/Transmit IP/TCP/UDP checksum offload</li>
+ <li>Hardware VLAN tag insertion/stripping</li>
+ <li>TCP segmentation offload (TSO)</li>
+ <li>MSI/MSI-X</li>
+ <li>Jumbo Frames</li>
+</ul>
+<p class="Pp">Support for Jumbo Frames is provided via the interface MTU
+ setting. Selecting an MTU larger than 1500 bytes with the
+ <a class="Xr">ifconfig(8)</a> utility configures the adapter to receive and
+ transmit Jumbo Frames.</p>
+<p class="Pp">The <code class="Nm">nfe</code> driver supports the following
+ media types:</p>
+<dl class="Bl-tag">
+ <dt id="autoselect"><a class="permalink" href="#autoselect"><code class="Cm">autoselect</code></a></dt>
+ <dd>Enable autoselection of the media type and options.</dd>
+ <dt id="10baseT/UTP"><a class="permalink" href="#10baseT/UTP"><code class="Cm">10baseT/UTP</code></a></dt>
+ <dd>Set 10Mbps operation.</dd>
+ <dt id="100baseTX"><a class="permalink" href="#100baseTX"><code class="Cm">100baseTX</code></a></dt>
+ <dd>Set 100Mbps (Fast Ethernet) operation.</dd>
+ <dt id="1000baseT"><a class="permalink" href="#1000baseT"><code class="Cm">1000baseT</code></a></dt>
+ <dd>Set 1000Mbps (Gigabit Ethernet) operation (recent models only).</dd>
+</dl>
+<p class="Pp">The <code class="Nm">nfe</code> driver supports the following
+ media options:</p>
+<dl class="Bl-tag">
+ <dt id="half-duplex"><a class="permalink" href="#half-duplex"><code class="Cm">half-duplex</code></a></dt>
+ <dd>Force half duplex operation.</dd>
+ <dt id="full-duplex"><a class="permalink" href="#full-duplex"><code class="Cm">full-duplex</code></a></dt>
+ <dd>Force full duplex operation.</dd>
+</dl>
+<p class="Pp">For more information on configuring this device, see
+ <a class="Xr">ifconfig(8)</a>.</p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="HARDWARE"><a class="permalink" href="#HARDWARE">HARDWARE</a></h1>
+<p class="Pp">The <code class="Nm">nfe</code> driver supports the following
+ NVIDIA MCP onboard adapters:</p>
+<p class="Pp"></p>
+<ul class="Bl-bullet Bl-compact">
+ <li>NVIDIA nForce MCP Networking Adapter</li>
+ <li>NVIDIA nForce MCP04 Networking Adapter</li>
+ <li>NVIDIA nForce 430 MCP12 Networking Adapter</li>
+ <li>NVIDIA nForce 430 MCP13 Networking Adapter</li>
+ <li>NVIDIA nForce MCP51 Networking Adapter</li>
+ <li>NVIDIA nForce MCP55 Networking Adapter</li>
+ <li>NVIDIA nForce MCP61 Networking Adapter</li>
+ <li>NVIDIA nForce MCP65 Networking Adapter</li>
+ <li>NVIDIA nForce MCP67 Networking Adapter</li>
+ <li>NVIDIA nForce MCP73 Networking Adapter</li>
+ <li>NVIDIA nForce MCP77 Networking Adapter</li>
+ <li>NVIDIA nForce MCP79 Networking Adapter</li>
+ <li>NVIDIA nForce2 MCP2 Networking Adapter</li>
+ <li>NVIDIA nForce2 400 MCP4 Networking Adapter</li>
+ <li>NVIDIA nForce2 400 MCP5 Networking Adapter</li>
+ <li>NVIDIA nForce3 MCP3 Networking Adapter</li>
+ <li>NVIDIA nForce3 250 MCP6 Networking Adapter</li>
+ <li>NVIDIA nForce3 MCP7 Networking Adapter</li>
+ <li>NVIDIA nForce4 CK804 MCP8 Networking Adapter</li>
+ <li>NVIDIA nForce4 CK804 MCP9 Networking Adapter</li>
+</ul>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="LOADER_TUNABLES"><a class="permalink" href="#LOADER_TUNABLES">LOADER
+ TUNABLES</a></h1>
+<p class="Pp">Tunables can be set at the <a class="Xr">loader(8)</a> prompt
+ before booting the kernel or stored in <a class="Xr">loader.conf(5)</a>.</p>
+<dl class="Bl-tag">
+ <dt id="hw.nfe.msi_disable"><var class="Va">hw.nfe.msi_disable</var></dt>
+ <dd>Whether or not MSI support is enabled in the driver. The default value is
+ 0.</dd>
+ <dt id="hw.nfe.msix_disable"><var class="Va">hw.nfe.msix_disable</var></dt>
+ <dd>Whether or not MSI-X support is enabled in the driver. The default value
+ is 0.</dd>
+</dl>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SYSCTL_VARIABLES"><a class="permalink" href="#SYSCTL_VARIABLES">SYSCTL
+ VARIABLES</a></h1>
+<p class="Pp">The following <a class="Xr">sysctl(8)</a> variables can be used to
+ modify or monitor <code class="Nm">nfe</code> behavior.</p>
+<dl class="Bl-tag">
+ <dt id="dev.nfe._d.process_limit"><var class="Va">dev.nfe.%d.process_limit</var></dt>
+ <dd>Maximum number of Rx events to be processed in the event loop before
+ rescheduling a taskqueue. The accepted range is 50 to 255, the default
+ value is 192. The interface does not need to be brought down and up again
+ before a change takes effect.</dd>
+</dl>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
+ ALSO</a></h1>
+<p class="Pp"><a class="Xr">altq(4)</a>, <a class="Xr">arp(4)</a>,
+ <a class="Xr">intro(4)</a>, <a class="Xr">miibus(4)</a>,
+ <a class="Xr">netintro(4)</a>, <a class="Xr">pci(4)</a>,
+ <a class="Xr">polling(4)</a>, <a class="Xr">rgephy(4)</a>,
+ <a class="Xr">ifconfig(8)</a>, <a class="Xr">sysctl(8)</a></p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
+<p class="Pp">The <code class="Nm">nfe</code> device driver first appeared in
+ <span class="Ux">OpenBSD 3.9</span>, and then in <span class="Ux">FreeBSD
+ 7.0</span>.</p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
+<p class="Pp">The <code class="Nm">nfe</code> driver was written by
+ <span class="An">Jonathan Gray</span>
+ &lt;<a class="Mt" href="mailto:jsg@openbsd.org">jsg@openbsd.org</a>&gt; and
+ <span class="An">Damien Bergamini</span>
+ &lt;<a class="Mt" href="mailto:damien@openbsd.org">damien@openbsd.org</a>&gt;.
+ The <code class="Nm">nfe</code> driver was ported to
+ <span class="Ux">FreeBSD</span> by <span class="An">Shigeaki
+ Tagashira</span>
+ &lt;<a class="Mt" href="mailto:shigeaki@se.hiroshima-u.ac.jp">shigeaki@se.hiroshima-u.ac.jp</a>&gt;.</p>
+</section>
+</div>
+<table class="foot">
+ <tr>
+ <td class="foot-date">January 15, 2011</td>
+ <td class="foot-os">FreeBSD 15.0</td>
+ </tr>
+</table>