UPGT(4) FreeBSD Kernel Interfaces Manual UPGT(4)
NAME
upgt - 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 (WPA1 and WPA2). WPA2 is currently the most
secure encryption standard for wireless networks supported by OpenBSD.
It is strongly recommended that neither WEP nor WPA1 are used as the sole
mechanism to secure wireless communication, due to serious weaknesses.
WPA1 is disabled by default and may be enabled using the option
"wpaprotos wpa1,wpa2". For standard WPA networks which use pre-shared
keys (PSK), keys are configured using the "wpakey" option. WPA-
Enterprise networks require use of the wpa_supplicant package. 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 can be installed using
fw_update(8).
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 example scans for available networks:
# ifconfig upgt0 scan
The following hostname.if(5) example configures upgt0 to join network
"mynwid", using WPA key "mywpakey", obtaining an IP address using DHCP:
join mynwid wpakey mywpakey
inet autoconf
SEE ALSO
arp(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 <
[email protected]>.
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.
FreeBSD 14.1-RELEASE-p8 March 27, 2025 FreeBSD 14.1-RELEASE-p8