UPGT(4) OpenBSD Programmer's Manual UPGT(4)NAMEupgt - Conexant/Intersil PrismGT SoftMAC USB IEEE 802.11b/g wireless
network device
SYNOPSIS
upgt* at uhub? port ?
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.
The upgt driver can be configured to use Wired Equivalent Privacy (WEP)
or Wi-Fi Protected Access (WPA-PSK and WPA2-PSK). WPA is the de facto
encryption standard for wireless networks. It is strongly recommended
that WEP not be used as the sole mechanism to secure wireless
communication, due to serious weaknesses in it. The upgt driver relies
on the software 802.11 stack for both encryption and decryption of data
frames.
The upgt driver can be configured at runtime with ifconfig(8) or on boot
with hostname.if(5).
FILES
The driver needs a firmware file which is loaded when an interface is
brought up:
/etc/firmware/upgt-gw3887
A prepackaged version of the firmware, designed to be used with
pkg_add(1), can be found at:
http://www.nazgul.ch/upgt/upgt-firmware-1.1.tgz
HARDWARE
The following adapters should work:
Belkin F5D7050 (version 1000)
Cohiba Proto Board
D-Link DWL-G120 Cohiba
D-Link DWL-G122 rev A2
FSC Connect2Air E-5400 USB D1700
Gigaset USB Adapter 54
Inventel UR045G
IOGear GWU513
Linksys WUSB54AG
Linksys WUSB54G ver 2
Medion MD40900
Philips CPWUA054
SMC EZ ConnectG SMC2862W-G
Sagem XG703A
Spinnaker DUT
Spinnaker Proto Board
Thomson SpeedTouch 121g
EXAMPLES
The following hostname.if(5) example configures upgt0 to join whatever
network is available on boot, using WEP key ``0x1deadbeef1'', channel 11,
obtaining an IP address using DHCP:
dhcp NONE NONE NONE nwkey 0x1deadbeef1 chan 11
Configure upgt0 to join network ``my_net'' using WPA with passphrase
``my_passphrase'':
# ifconfig upgt0 nwid my_net wpakey my_passphrase
Join an existing BSS network, ``my_net'':
# ifconfig upgt0 192.168.1.1 netmask 0xffffff00 nwid my_net
SEE ALSOarp(4), ifmedia(4), intro(4), netintro(4), usb(4), hostname.if(5),
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.
OpenBSD 4.9 November 1, 2010 OpenBSD 4.9
