$FreeBSD$
Copyright (c) 2007 Marcus Glocker <mglocker@openbsd.org>
Copyright (c) 2005-2007
Damien Bergamini <damien.bergamini@free.fr>
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Copyright (c) 2006 Theo de Raadt.
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.Dd April 17, 2008 .Dt UPGT 4 .Os .Sh NAME .Nm upgt .Nd Conexant/Intersil PrismGT SoftMAC USB IEEE 802.11b/g wireless network device .Sh SYNOPSIS To compile this driver into the kernel, place the following lines in your kernel configuration file: d -ragged -offset indent .Cd "device ehci" .Cd "device uhci" .Cd "device ohci" .Cd "device usb" .Cd "device upgt" .Cd "device wlan" .Ed
p Alternatively, to load the driver as a module at boot time, place the following line in .Xr loader.conf 5 : d -literal -offset indent if_upgt_load="YES" .Ed .Sh DESCRIPTION The .Nm driver supports the USB 2.0 Conexant/Intersil PrismGT series wireless adapters based on the GW3887 chipset.
p
These are the modes the
.Nm
driver can operate in:
l -tag -width "IBSS-masterXX" t BSS mode Also known as
.Em infrastructure
mode, this is used when associating with an access point, through
which all traffic passes.
This mode is the default.
.It IBSS mode
Also known as
.Em IEEE ad-hoc
mode or
.Em peer-to-peer
mode.
This is the standardized method of operating without an access point.
Stations associate with a service set.
However, actual connections between stations are peer-to-peer.
.It Host AP
In this mode the driver acts as an access point (base station)
for other cards.
t 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.
.El
p
.Nm
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.
.Pp
The transmit speed is user-selectable or can be adapted automatically by the
driver depending on the received signal strength and on the number of hardware
transmission retries.
p
The
.Nm
driver can be configured at runtime with
.Xr ifconfig 8 .
.Sh FILES
.Pp
These firmware files are not free because Conexant/Intersil refuses
to grant distribution rights.
As a result, even though
.Ox
includes the driver, the firmware files cannot be included and
users have to download these files on their own.
This driver requires the
.Nm 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
.Xr pkg_add 1
is available:
d -literal -offset indent http://weongyo.org/project/upgt/upgt-firmware-2.13.1.0.tar.gz
.Ed
.Sh HARDWARE
The
.Nm
driver supports USB 2.0 Conexant/Intersil PrismGT series wireless
adapters based on the GW3887 chipset, among them:
p l -bullet -compact t Belkin F5D7050 (version 1000) t Cohiba Proto Board t D-Link DWL-G120 Cohiba t FSC Connect2Air E-5400 USB D1700 t Gigaset USB Adapter 54 t Inventel UR045G t SMC EZ ConnectG SMC2862W-G t Sagem XG703A t Spinnaker DUT t Spinnaker Proto Board .El .Sh EXAMPLES Join an existing BSS network (i.e., connect to an access point): d -literal -offset indent ifconfig wlan create wlandev upgt0 inet 192.168.0.20 \e netmask 0xffffff00 .Ed
p Join a specific BSS network with network name .Dq Li my_net :
p .Dl "ifconfig wlan create wlandev upgt0 ssid my_net up"
p Join a specific BSS network with 64-bit WEP encryption: d -literal -offset indent ifconfig wlan create wlandev upgt0 ssid my_net \e wepmode on wepkey 0x1234567890 weptxkey 1 up .Ed .Sh SEE ALSO .Xr arp 4 , .Xr netintro 4 , .Xr usb 4 , .Xr wlan 4 , .Xr ifconfig 8 .Sh HISTORY The .Nm driver first appeared in .Ox 4.3 . .Sh AUTHORS .An -nosplit The .Nm driver was written by .An Marcus Glocker Aq mglocker@openbsd.org .
p The hardware specification was reverse engineered by the people at
a http://www.prism54.org . .Sh CAVEATS The .Nm 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.