1.\" $OpenBSD: upgt.4,v 1.23 2014/02/15 20:28:19 tedu Exp $ 2.\" 3.\" Copyright (c) 2007 Marcus Glocker <mglocker@openbsd.org> 4.\" Copyright (c) 2005-2007 5.\" Damien Bergamini <damien.bergamini@free.fr> 6.\" 7.\" Permission to use, copy, modify, and distribute this software for any 8.\" purpose with or without fee is hereby granted, provided that the above 9.\" copyright notice and this permission notice appear in all copies. 10.\" 11.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18.\" 19.\" 20.\" 21.\" Copyright (c) 2006 Theo de Raadt. 22.\" Copyright (c) 2006 The DragonFly Project. All rights reserved. 23.\" 24.\" Redistribution and use in source and binary forms, with or without 25.\" modification, are permitted provided that the following conditions 26.\" are met: 27.\" 28.\" 1. Redistributions of source code must retain the above copyright 29.\" notice, this list of conditions and the following disclaimer. 30.\" 2. Redistributions in binary form must reproduce the above copyright 31.\" notice, this list of conditions and the following disclaimer in 32.\" the documentation and/or other materials provided with the 33.\" distribution. 34.\" 3. Neither the name of The DragonFly Project nor the names of its 35.\" contributors may be used to endorse or promote products derived 36.\" from this software without specific, prior written permission. 37.\" 38.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 39.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 40.\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 41.\" FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 42.\" COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 43.\" INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 44.\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 45.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 46.\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 47.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 48.\" OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 49.\" SUCH DAMAGE. 50.\" 51.Dd $Mdocdate: February 15 2014 $ 52.Dt UPGT 4 53.Os 54.Sh NAME 55.Nm upgt 56.Nd Conexant/Intersil PrismGT SoftMAC USB IEEE 802.11b/g wireless network 57device 58.Sh SYNOPSIS 59.Cd "upgt* at uhub? port ?" 60.Sh DESCRIPTION 61The 62.Nm 63driver supports the USB 2.0 Conexant/Intersil PrismGT series wireless 64adapters based on the GW3887 chipset. 65.Pp 66These are the modes the 67.Nm 68driver can operate in: 69.Bl -tag -width "IBSS-masterXX" 70.It BSS mode 71Also known as 72.Em infrastructure 73mode, this is used when associating with an access point, through 74which all traffic passes. 75This mode is the default. 76.It monitor mode 77In this mode the driver is able to receive packets without 78associating with an access point. 79This disables the internal receive filter and enables the card to 80capture packets from networks which it wouldn't normally have access to, 81or to scan for access points. 82.El 83.Pp 84The 85.Nm 86driver can be configured to use 87Wired Equivalent Privacy (WEP) or 88Wi-Fi Protected Access (WPA-PSK and WPA2-PSK). 89WPA is the current encryption standard for wireless networks. 90It is strongly recommended that WEP 91not be used as the sole mechanism 92to secure wireless communication, 93due to serious weaknesses in it. 94The 95.Nm 96driver relies on the software 802.11 stack for both encryption and decryption 97of data frames. 98.Pp 99The 100.Nm 101driver can be configured at runtime with 102.Xr ifconfig 8 103or on boot with 104.Xr hostname.if 5 . 105.Sh FILES 106The driver needs a firmware file which is loaded when an interface is 107brought up: 108.Pp 109.Bl -tag -width Ds -offset indent -compact 110.It Pa /etc/firmware/upgt-gw3887 111.El 112.\".Pp 113.\"These firmware files are not free because Conexant/Intersil refuses 114.\"to grant distribution rights. 115.\"As a result, even though 116.\".Ox 117.\"includes the driver, the firmware files cannot be included and 118.\"users have to download these files on their own. 119.Pp 120A prepackaged version of the firmware can be installed using 121.Xr fw_update 1 . 122.Sh HARDWARE 123The following adapters should work: 124.Pp 125.Bl -tag -width Ds -offset indent -compact 126.It Belkin F5D7050 (version 1000) 127.It Cohiba Proto Board 128.It D-Link DWL-G120 Cohiba 129.It D-Link DWL-G122 rev A2 130.It FSC Connect2Air E-5400 USB D1700 131.It Gigaset USB Adapter 54 132.It Inventel UR045G 133.It IOGear GWU513 134.It Linksys WUSB54AG 135.It Linksys WUSB54G ver 2 136.It Medion MD40900 137.It Philips CPWUA054 138.It SMC EZ ConnectG SMC2862W-G 139.It Sagem XG703A 140.It Spinnaker DUT 141.It Spinnaker Proto Board 142.It Thomson SpeedTouch 121g 143.El 144.Sh EXAMPLES 145The following example scans for available networks: 146.Pp 147.Dl # ifconfig upgt0 scan 148.Pp 149The following 150.Xr hostname.if 5 151example configures upgt0 to join network 152.Dq mynwid , 153using WPA key 154.Dq mywpakey , 155obtaining an IP address using DHCP: 156.Bd -literal -offset indent 157nwid mynwid 158wpakey mywpakey 159dhcp 160.Ed 161.Sh SEE ALSO 162.Xr arp 4 , 163.Xr ifmedia 4 , 164.Xr intro 4 , 165.Xr netintro 4 , 166.Xr usb 4 , 167.Xr hostname.if 5 , 168.\".Xr hostapd 8 , 169.Xr ifconfig 8 170.Sh HISTORY 171The 172.Nm 173driver first appeared in 174.Ox 4.3 . 175.Sh AUTHORS 176.An -nosplit 177The 178.Nm 179driver was written by 180.An Marcus Glocker Aq Mt mglocker@openbsd.org . 181.Pp 182The hardware specification was reverse engineered by the people at 183.Lk http://www.prism54.org . 184.Sh CAVEATS 185The 186.Nm 187driver just supports the USB 2.0 devices (GW3887 chipset) but not the 188USB 1.0 devices containing the NET2280, ISL3880, and ISL3886 chipsets. 189Some further efforts would be necessary to add USB 1.0 support to the 190driver. 191