KSE(4) | Device Drivers Manual | KSE(4) |
kse
— Micrel
8842/8841 PCI Ethernet controller driver
kse* at pci? dev ? function ?
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.
The kse
driver was written by
Tohru Nishimura.
__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.
July 6, 2006 | NetBSD 10.99 |