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+<table class="head">
+ <tr>
+ <td class="head-ltitle">FXP(4)</td>
+ <td class="head-vol">Device Drivers Manual</td>
+ <td class="head-rtitle">FXP(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">fxp</code> &#x2014; <span class="Nd">Intel
+ EtherExpress PRO/100 Ethernet device 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 fxp</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_fxp_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">fxp</code> driver provides support for
+ Ethernet adapters based on the Intel i82557, i82558, i82559, i82550, and
+ i82562 chips. The driver supports TCP/UDP/IP checksum offload for both
+ transmit and receive on i82550 and i82551. On i82559 only TCP/UDP checksum
+ offload for receive is supported. TCP segmentation offload (TSO) for IPv4 as
+ well as VLAN hardware tag insertion/stripping is supported on i82550 and
+ i82551. Wake On Lan (WOL) support is provided on all controllers except
+ i82557, i82259ER and early i82558 revisions.</p>
+<p class="Pp">The <code class="Nm">fxp</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. The autoselected mode
+ can be overridden by adding the media options to
+ <a class="Xr">rc.conf(5)</a>.</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>
+</dl>
+<p class="Pp">The <code class="Nm">fxp</code> driver supports the following
+ media options:</p>
+<dl class="Bl-tag">
+ <dt id="full-duplex"><a class="permalink" href="#full-duplex"><code class="Cm">full-duplex</code></a></dt>
+ <dd>Force full duplex operation.</dd>
+ <dt id="half-duplex"><a class="permalink" href="#half-duplex"><code class="Cm">half-duplex</code></a></dt>
+ <dd>Force half duplex operation.</dd>
+</dl>
+<p class="Pp">Note that 100baseTX media type is not available on the Pro/10. For
+ further information on configuring this device, see
+ <a class="Xr">ifconfig(8)</a>.</p>
+<p class="Pp">The <code class="Nm">fxp</code> driver supports reception and
+ transmission of extended frames for <a class="Xr">vlan(4)</a>. This
+ capability of <code class="Nm">fxp</code> can be controlled by means of the
+ <code class="Cm">vlanmtu</code> parameter to
+ <a class="Xr">ifconfig(8)</a>.</p>
+<p class="Pp">The <code class="Nm">fxp</code> driver also supports a special
+ link option:</p>
+<dl class="Bl-tag">
+ <dt id="link0"><a class="permalink" href="#link0"><code class="Cm">link0</code></a></dt>
+ <dd>Some chip revisions have loadable microcode which can be used to reduce
+ the interrupt load on the host cpu. Not all boards have microcode support.
+ Setting the <code class="Cm">link0</code> flag with
+ <a class="Xr">ifconfig(8)</a> will download the microcode to the chip if
+ it is available.</dd>
+</dl>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="HARDWARE"><a class="permalink" href="#HARDWARE">HARDWARE</a></h1>
+<p class="Pp">Adapters supported by the <code class="Nm">fxp</code> driver
+ include:</p>
+<p class="Pp"></p>
+<ul class="Bl-bullet Bl-compact">
+ <li>Intel EtherExpress PRO/10</li>
+ <li>Intel InBusiness 10/100</li>
+ <li>Intel PRO/100B / EtherExpressPRO/100 B PCI Adapter</li>
+ <li>Intel PRO/100+ Management Adapter</li>
+ <li>Intel PRO/100 VE Desktop Adapter</li>
+ <li>Intel PRO/100 VM Network Connection</li>
+ <li>Intel PRO/100 M Desktop Adapter</li>
+ <li>Intel PRO/100 S Desktop, Server and Dual-Port Server Adapters</li>
+ <li>Many on-board network interfaces on Intel motherboards</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>. The
+ following variables are available as both <a class="Xr">loader(8)</a>
+ tunables and <a class="Xr">sysctl(8)</a> variables:</p>
+<dl class="Bl-tag">
+ <dt id="dev.fxp._d.int_delay"><var class="Va">dev.fxp.%d.int_delay</var></dt>
+ <dd>Maximum amount of time, in microseconds, that an interrupt may be delayed
+ in an attempt to coalesce interrupts. This is only effective if the Intel
+ microcode is loaded. The accepted range is 300 to 3000, the default is
+ 1000.</dd>
+ <dt id="dev.fxp._d.bundle_max"><var class="Va">dev.fxp.%d.bundle_max</var></dt>
+ <dd>Number of packets that will be bundled, before an interrupt is generated.
+ This is only effective if the Intel microcode is loaded. The accepted
+ range is 1 to 65535, the default is 6.</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 variables are available as
+ <a class="Xr">sysctl(8)</a> variables.</p>
+<dl class="Bl-tag">
+ <dt id="dev.fxp._d.rnr"><var class="Va">dev.fxp.%d.rnr</var></dt>
+ <dd>This is a read-only variable and shows the number of events of RNR
+ (resource not ready).</dd>
+ <dt id="dev.fxp._d.stats"><var class="Va">dev.fxp.%d.stats</var></dt>
+ <dd>This is a read-only variable and displays useful MAC counters maintained
+ in the driver.</dd>
+</dl>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="DIAGNOSTICS"><a class="permalink" href="#DIAGNOSTICS">DIAGNOSTICS</a></h1>
+<dl class="Bl-diag">
+ <dt>fxp%d: couldn't map memory</dt>
+ <dd>A fatal initialization error has occurred.</dd>
+ <dt>fxp%d: couldn't map interrupt</dt>
+ <dd>A fatal initialization error has occurred.</dd>
+ <dt>fxp%d: Failed to malloc memory</dt>
+ <dd>There are not enough mbuf's available for allocation.</dd>
+ <dt>fxp%d: device timeout</dt>
+ <dd>The device has stopped responding to the network, or there is a problem
+ with the network connection (cable).</dd>
+ <dt>fxp%d: Microcode loaded, int_delay: %d usec bundle_max: %d</dt>
+ <dd>The chip has successfully downloaded the microcode, and changed the
+ parameterized values to the given settings.</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">miibus(4)</a>, <a class="Xr">netintro(4)</a>,
+ <a class="Xr">ng_ether(4)</a>, <a class="Xr">polling(4)</a>,
+ <a class="Xr">vlan(4)</a>, <a class="Xr">ifconfig(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">fxp</code> device driver first appeared in
+ <span class="Ux">FreeBSD 2.1</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">fxp</code> device driver was written by
+ <span class="An">David Greenman</span>. It has then been updated to use the
+ busdma API and made endian-clean by <span class="An">Maxime Henrion</span>.
+ This manual page was written by <span class="An">David E.
+ O'Brien</span>.</p>
+</section>
+</div>
+<table class="foot">
+ <tr>
+ <td class="foot-date">November 26, 2010</td>
+ <td class="foot-os">FreeBSD 15.0</td>
+ </tr>
+</table>