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kse(4) [netbsd man page]

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

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 Ether- net. 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

Check Out this Related Man Page

STGE(4) 						   BSD Kernel Interfaces Manual 						   STGE(4)

stge -- Sundance/Tamarack TC9021 Gigabit Ethernet driver SYNOPSIS
stge* at pci? dev ? function ? Configuration of PHYs or Ten-bit interfaces may also be necessary. See mii(4). DESCRIPTION
The stge device driver supports the Sundance/Tamarack TC9021 Gigabit Ethernet chip. The Sundance/Tamarack TC9021 is found on the D-Link DGE-550T, and the Antares Microsystems Gigabit Ethernet board. It uses an external PHY or an external 10-bit interface. The TC9021 supports IPv4/TCP/UDP checksumming in hardware. The stge driver supports this feature of the chip. See ifconfig(8) for informa- tion on how to enable this feature. SEE ALSO
arp(4), ifmedia(4), mii(4), netintro(4), pci(4), ifconfig(8) HISTORY
The stge driver first appeared in NetBSD 1.6. AUTHORS
The stge driver was written by Jason R. Thorpe <>. BUGS
The stge driver does not support the VLAN tag insertion/removal feature of the TC9021 chip. This is primarily because the TC9021's VLAN do not have a useful programming interface. The stge driver does not yet support jumbo Ethernet frames. The stge driver does not yet function properly with 1000BASE-T fitted boards. Currently, only 1000BASE-SX boards work. BSD
July 24, 2001 BSD
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