NAME
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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 scanThe 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
<mglocker@openbsd.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.