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KSE(4)			 BSD Kernel Interfaces Manual			KSE(4)

NAME
     kse — Micrel 8842/8841 PCI Ethernet controller driver

SYNOPSIS
     kse* at pci? dev ? function ?

DESCRIPTION
     The kse driver supports Ethernet interfaces based on the Micrel 8842/8841
     PCI Ethernet chips.  The 8842 has 2 Ethernet ports which behave as a man‐
     aged 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 kse
     driver distinguishes and handles them according to the HW model.

SEE ALSO
     arp(4), ifmedia(4), netintro(4), pci(4), ifconfig(8)

AUTHORS
     The kse driver was written by Tohru Nishimura.

BUGS
     __STRICT_ALIGNMENT case is not written.  8842 media selection keeps
     “auto” and indicates “up 100baseTX-FX flow” 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 kse 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.

BSD				 July 6, 2006				   BSD

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