axe(4)
NAME
axe - ASIX Electronics AX88172 USB Ethernet driver
SYNOPSIS
To compile this driver into the kernel, place the following
lines in your
kernel configuration file:
device ehci
device uhci
device ohci
device usb
device miibus
device axe
Alternatively, to load the driver as a module at boot time,
place the
following line in loader.conf(5):
if_axe_load="YES"
DESCRIPTION
- The axe driver provides support for USB Ethernet adapters
- based on the
ASIX Electronics AX88172 USB 2.0 chipset. - The AX88172 is a USB 2.0 device which contains a 10/100 Eth
- ernet 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
controllers, 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 endpoints.
- The axe driver supports the following media types:
- autoselect Enable autoselection of the media type and
- options. The
- user can manually override the autoselected
- mode by
adding media options to the /etc/rc.conf - file.
- 10baseT/UTP Set 10Mbps operation. The mediaopt option
- can also be
- used to enable full-duplex operation. Not
- specifying
full-duplex implies half-duplex mode. - 100baseTX Set 100Mbps (Fast Ethernet) operation. The
- mediaopt
- option can also be used to enable
- full-duplex operation.
Not specifying full-duplex implies - half-duplex mode.
- The axe driver supports the following media options:
- full-duplex Force full duplex operation. The interface
- will operate
- in half duplex mode if this media option is
- not specified.
- For more information on configuring this device, see ifcon
- fig(8).
HARDWARE
- The axe driver supports ASIX Electronics AX88172 based USB
- Ethernet
adapters including: - +o Buffalo (Melco Inc.) LUA-U2-KTX
+o D-Link DUBE100
+o LinkSys USB200M
+o Netgear FA120
+o Sitecom LN-029
+o System TALKS Inc. SGC-X2UL
DIAGNOSTICS
- axe%d: watchdog timeout A packet was queued for transmis
- sion 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 ALSO
arp(4), miibus(4), netintro(4), ng_ether(4), ifconfig(8)
ASIX AX88172 data sheet, http://www.asix.com.tw.
HISTORY
The axe device driver first appeared in FreeBSD 5.0.
AUTHORS
- The axe driver was written by Bill Paul <wpaul@windriv
- er.com>.
- BSD July 16, 2005