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UPGT(4) NetBSD Kernel Interfaces Manual UPGT(4)
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by Kimmo Suominen.
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upgt -- Conexant/Intersil PrismGT SoftMAC USB IEEE 802.11b/g wireless
upgt* at uhub? port ?
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 asso-
ciating 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 communica-
tion, 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
The driver needs a firmware file which is loaded when an interface is
Currently these firmware files can not be included in NetBSD base system.
Please download these files and put them into the above firmware direc-
A tar archive file that includes upgt-gw3887 firmware can be found at:
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
Linksys WUSB54G ver 2
SMC EZ ConnectG SMC2862W-G
Spinnaker Proto Board
Thomson SpeedTouch 121g
Willcom / Sharp WS003SH/WS004SH smart phone internal wireless LAN
The following ifconfig.if(5) example configures upgt0 to join whatever
network is available on boot, using WEP key ``0x1deadbeef1'', channel 11,
obtaining an IP address using dhcpcd(8):
ssid 'my network' nwkey 0x1deadbeef1 chan 11
Join an existing BSS network, ``my_net'':
# ifconfig upgt0 192.168.1.1 netmask 0xffffff00 nwid my_net
arp(4), ifmedia(4), intro(4), netintro(4), usb(4), ifconfig.if(5),
The upgt driver first appeared in OpenBSD 4.3. It was ported to NetBSD
by FUKAUMI Naoki and first appeared in NetBSD 6.0.
The upgt driver was written by Marcus Glocker <firstname.lastname@example.org>.
The hardware specification was reverse engineered by the people at
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.
NetBSD 9.2 July 4, 2010 NetBSD 9.2