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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> — <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="YES"</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>
<<a class="Mt" href="mailto:jsg@openbsd.org">jsg@openbsd.org</a>> and
<span class="An">Damien Bergamini</span>
<<a class="Mt" href="mailto:damien@openbsd.org">damien@openbsd.org</a>>.
The <code class="Nm">nfe</code> driver was ported to
<span class="Ux">FreeBSD</span> by <span class="An">Shigeaki
Tagashira</span>
<<a class="Mt" href="mailto:shigeaki@se.hiroshima-u.ac.jp">shigeaki@se.hiroshima-u.ac.jp</a>>.</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>
|
