NAME
upgt - Conexant/Intersil PrismGT SoftMAC USB IEEE 802.11b/g wireless
network device
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 upgt
device wlan
Alternatively, to load the driver as a module at boot time, place the
following line in loader.conf(5):
if_upgt_load="YES"
DESCRIPTION
The upgt driver supports the USB 2.0 Conexant/Intersil PrismGT series
wireless adapters based on the GW3887 chipset.
These are the modes the upgt driver can operate in:
BSS mode Also known as infrastructure mode, this is used when
associating with an access point, through which all
traffic passes. This mode is the default.
monitor mode In this mode the driver is able to receive packets without
associating with an access point. This disables the
internal receive filter and enables the card to capture
packets from networks which it wouldn’t normally have
access to, or to scan for access points.
upgt supports software WEP. Wired Equivalent Privacy (WEP) is the de
facto encryption standard for wireless networks. It can be typically
configured in one of three modes: no encryption; 40-bit encryption; or
104-bit encryption. Unfortunately, due to serious weaknesses in WEP
protocol it is strongly recommended that it not be used as the sole
mechanism to secure wireless communication. WEP is not enabled by
default.
The upgt driver can be configured at runtime with ifconfig(8).
FILES
This driver requires the upgtfw firmware to be installed before it will
work. The firmware files are not publicly available. A package of the
firmware which can be installed via pkg_add(1) is available:
http://weongyo.org/project/upgt/upgt-firmware-2.13.1.0.tar.gz
HARDWARE
The upgt driver supports USB 2.0 Conexant/Intersil PrismGT series
wireless adapters based on the GW3887 chipset, among them:
· Belkin F5D7050 (version 1000)
· Cohiba Proto Board
· D-Link DWL-G120 Cohiba
· FSC Connect2Air E-5400 USB D1700
· Gigaset USB Adapter 54
· Inventel UR045G
· SMC EZ ConnectG SMC2862W-G
· Sagem XG703A
· Spinnaker DUT
· Spinnaker Proto Board
EXAMPLES
Join an existing BSS network (i.e., connect to an access point):
ifconfig wlan create wlandev upgt0 inet 192.168.0.20 \
netmask 0xffffff00
Join a specific BSS network with network name “my_net”:
ifconfig wlan create wlandev upgt0 ssid my_net up
Join a specific BSS network with 64-bit WEP encryption:
ifconfig wlan create wlandev upgt0 ssid my_net \
wepmode on wepkey 0x1234567890 weptxkey 1 up
SEE ALSO
arp(4), netintro(4), usb(4), wlan(4), ifconfig(8)
HISTORY
The upgt driver first appeared in OpenBSD 4.3.
AUTHORS
The upgt driver was written by Marcus Glocker 〈mglocker@openbsd.org〉.
The hardware specification was reverse engineered by the people at
http://www.prism54.org.
CAVEATS
The upgt driver just supports the USB 2.0 devices (GW3887 chipset) but
not the USB 1.0 devices containing the NET2280, ISL3880, and ISL3886
chipsets. Some further efforts would be necessary to add USB 1.0 support
to the driver.