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<table class="head">
<tr>
<td class="head-ltitle">ALE(4)</td>
<td class="head-vol">Device Drivers Manual</td>
<td class="head-rtitle">ALE(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">ale</code> — <span class="Nd">Atheros
AR8121/AR8113/AR8114 Gigabit/Fast 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 ale</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_ale_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">ale</code> device driver provides support for
Atheros AR8121 PCI Express Gigabit Ethernet controllers and Atheros
AR8113/AR8114 PCI Express Fast Ethernet controllers.</p>
<p class="Pp">All LOMs supported by the <code class="Nm">ale</code> driver have
TCP/UDP/IP checksum offload for both receive and transmit, TCP segmentation
offload (TSO), hardware VLAN tag stripping/insertion features, Wake On Lan
(WOL) and an interrupt coalescing/moderation mechanism as well as a 64-bit
multicast hash filter.</p>
<p class="Pp">The AR8121 also supports Jumbo Frames (up to 8132 bytes), which
can be configured 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">ale</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 user can manually
override the autoselected mode by adding 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>
<dt id="1000baseTX"><a class="permalink" href="#1000baseTX"><code class="Cm">1000baseTX</code></a></dt>
<dd>Set 1000baseTX operation over twisted pair.</dd>
</dl>
<p class="Pp">The <code class="Nm">ale</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">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">ale</code> device driver provides support for
the following Ethernet controllers:</p>
<p class="Pp"></p>
<ul class="Bl-bullet Bl-compact">
<li>Atheros AR8113 PCI Express Fast Ethernet controller</li>
<li>Atheros AR8114 PCI Express Fast Ethernet controller</li>
<li>Atheros AR8121 PCI Express Gigabit Ethernet controller</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.ale.msi_disable"><var class="Va">hw.ale.msi_disable</var></dt>
<dd>This tunable disables MSI support on the Ethernet hardware. The default
value is 0.</dd>
<dt id="hw.ale.msix_disable"><var class="Va">hw.ale.msix_disable</var></dt>
<dd>This tunable disables MSI-X support on the Ethernet hardware. 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 variables are available as both
<a class="Xr">sysctl(8)</a> variables and <a class="Xr">loader(8)</a>
tunables:</p>
<dl class="Bl-tag">
<dt id="dev.ale._d.int_rx_mod"><var class="Va">dev.ale.%d.int_rx_mod</var></dt>
<dd>Maximum amount of time to delay receive interrupt processing in units of
1us. The accepted range is 0 to 130000, the default is 30(30us). Value 0
completely disables the interrupt moderation.</dd>
<dt id="dev.ale._d.int_tx_mod"><var class="Va">dev.ale.%d.int_tx_mod</var></dt>
<dd>Maximum amount of time to delay transmit interrupt processing in units of
1us. The accepted range is 0 to 130000, the default is 1000(1ms). Value 0
completely disables the interrupt moderation.</dd>
<dt id="dev.ale._d.process_limit"><var class="Va">dev.ale.%d.process_limit</var></dt>
<dd>Maximum amount of Rx frames to be processed in the event loop before
rescheduling a taskqueue. The accepted range is 32 to 255, the default
value is 128 events. 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">miibus(4)</a>, <a class="Xr">netintro(4)</a>,
<a class="Xr">ng_ether(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">ale</code> driver was written by
<span class="An">Pyun YongHyeon</span>
<<a class="Mt" href="mailto:yongari@FreeBSD.org">yongari@FreeBSD.org</a>>.
It first appeared in <span class="Ux">FreeBSD 7.1</span>.</p>
</section>
</div>
<table class="foot">
<tr>
<td class="foot-date">November 12, 2008</td>
<td class="foot-os">FreeBSD 15.0</td>
</tr>
</table>
|
