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 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
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.