static/netbsd/man4/kse.4 4.html


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<table class="head">
  <tr>
    <td class="head-ltitle">KSE(4)</td>
    <td class="head-vol">Device Drivers Manual</td>
    <td class="head-rtitle">KSE(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">kse</code> &#x2014; <span class="Nd">Micrel
    8842/8841 PCI Ethernet controller driver</span></p>
</section>
<section class="Sh">
<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
<p class="Pp"><code class="Cd">kse* at pci? dev ? function ?</code></p>
</section>
<section class="Sh">
<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
<p class="Pp">The <code class="Nm">kse</code> driver supports Ethernet
    interfaces based on the Micrel 8842/8841 PCI Ethernet chips. The 8842 has 2
    Ethernet ports which behave as a managed switch to bridge each other. It
    works like a T-shape connector of Ethernet data flow in which an Ethernet
    controller sits at the leg of the T. Frames can flow between the two ports
    while traffic destined for the 8842 reaches the EMAC. The 8841 is a plain
    10/100 Ethernet. The <code class="Nm">kse</code> driver distinguishes and
    handles them according to the HW model.</p>
</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">arp(4)</a>, <a class="Xr">ifmedia(4)</a>,
    <a class="Xr">netintro(4)</a>, <a class="Xr">pci(4)</a>,
    <a class="Xr">ifconfig(8)</a></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">kse</code> driver was written by
    <span class="An">Tohru Nishimura</span>.</p>
</section>
<section class="Sh">
<h1 class="Sh" id="BUGS"><a class="permalink" href="#BUGS">BUGS</a></h1>
<p class="Pp">__STRICT_ALIGNMENT case is not written. 8842 media selection keeps
    &#x201C;auto&#x201D; and indicates &#x201C;up 100baseTX-FX flow&#x201D; when
    either of two ports is found link-up. There is no functional provision to
    see and control the media selection of them this moment. Advanced features
    like flow volume bound, VLAN tag insertion/removal, QoS DiffServ are not
    implemented and remain uncontrollable by the <code class="Nm">kse</code>
    driver. UDP4CSUM is not very useful since the HW has an implementation error
    for the case when a large UDP datagram is fragmented into MTU sized
  frames.</p>
</section>
</div>
<table class="foot">
  <tr>
    <td class="foot-date">July 6, 2006</td>
    <td class="foot-os">NetBSD 10.1</td>
  </tr>
</table>