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.