AXE(4) BSD Programmer's Manual AXE(4)NAMEaxe - ASIX Electronics AX88172 USB Ethernet driver
SYNOPSIS
axe* at uhub? port ?
ukphy* at mii?
DESCRIPTION
The axe driver provides support for USB Ethernet adapters based on the
ASIX Electronics AX88172 USB 2.0 chipset, including the following:
+ D-Link DUBE100
+ LinkSys USB200M
+ Netgear FA120
+ Buffalo(MELCO) LUA-U2-KTX
The AX88172 is a USB 2.0 device which contains a 10/100 Ethernet MAC with
MII interface and is designed to work with both Ethernet and HomePNA
transceivers. The AX88172 will operate with both USB 1.x and USB 2.0 con-
trollers, however performance with 1.x controllers will be limited since
the USB 1.x standard specifies a maximum transfer speed of 12Mbps. Users
with USB 1.x controllers should therefore not expect to actually achieve
100Mbps speeds with these devices.
The AX88172 supports a 64-bit multicast hash table, single perfect filter
entry for the station address, all-multicast mode, and promiscuous mode.
Packets are received and transmitted over separate USB bulk transfer end-
points.
The axe driver supports the following media types:
autoselect Enable autoselection of the media type and options (this is
the default). The user can manually override the autoselected
mode by adding media options to the appropriate
hostname.if(5) file.
10baseT Set 10Mbps operation.
100baseTX Set 100Mbps (fast Ethernet) operation.
The driver supports the following media options:
full-duplex Force full-duplex operation.
half-duplex Force half-duplex operation.
The interface will operate in half-duplex mode if no media option is
specified.
For more information on configuring this device, see ifconfig(8).
DIAGNOSTICS
axe%d: watchdog timeout A packet was queued for transmission and a
transmit command was issued, however the device failed to acknowledge the
transmission before a timeout expired.
axe%d: no memory for rx list The driver failed to allocate an mbuf for
the receiver ring.
SEE ALSOarp(4), ifmedia(4), intro(4), netintro(4), usb(4), hostname.if(5),
ifconfig(8)
ASIX AX88172 data sheet, http://www.asix.com.tw.
HISTORY
The axe device driver first appeared in OpenBSD 3.6.
AUTHORS
The axe driver was written by Bill Paul <wpaul@windriver.com> and ported
to OpenBSD by
Greg Taleck <taleck@oz.net>.
MirOS BSD #10-current April 20, 2003 1
