TXP(4) | Device Drivers Manual | TXP(4) |
txp
— 3Com 3XP
Typhoon/Sidewinder (3CR990) Ethernet interface
txp* at pci? dev ? function ?
The txp
interface provides access to the
10Mb/s and 100Mb/s Ethernet networks via the 3Com Typhoon/Sidewinder
chipset. This driver supports the following cards:
Basic Ethernet functions are provided as well as support for vlan(4) tag removal and insertion assistance, receive ip(4), tcp(4), and udp(4) checksum offloading, and transmit ip(4) checksum offloading. There is currently no support for transmit tcp(4) or udp(4) checksum offloading, tcp(4) segmentation, nor ipsec(4) acceleration. Note that hardware checksumming is only used when the interface is not in bridge(4) mode.
Each of the host's network addresses is specified at boot time
with an SIOCSIFADDR
ioctl(2). The
txp
interface employs the address resolution
protocol described in arp(4) to
dynamically map between Internet and Ethernet addresses on the local
network.
When a txp
interface is brought up, by
default, it will attempt to auto-negotiate the link speed and duplex mode.
The speeds, in order of attempt, are: 100Mb/s Full Duplex, 100Mb/s Half
Duplex, 10 Mb/s Full Duplex, and 10 Mb/s Half Duplex.
The txp
supports several media types,
which are selected via the
ifconfig(8) command. The
supported media types are:
arp(4), ifmedia(4), inet(4), intro(4), ip(4), netintro(4), pci(4), tcp(4), udp(4), vlan(4), ifconfig(8)
The txp
driver first appeared in
NetBSD 2.0.
August 21, 2003 | NetBSD 10.99 |