191 lines
5.2 KiB
Groff
Executable File
191 lines
5.2 KiB
Groff
Executable File
.\" $NetBSD: urtwn.4,v 1.10 2014/02/14 07:29:06 wiz Exp $
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.\" $OpenBSD: urtwn.4,v 1.15 2011/11/26 06:39:33 ckuethe Exp $
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.\"
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.\" Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr>
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.\"
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.\" Permission to use, copy, modify, and distribute this software for any
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.\" purpose with or without fee is hereby granted, provided that the above
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.\" copyright notice and this permission notice appear in all copies.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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.\"
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.Dd February 13, 2014
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.Dt URTWN 4
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.Os
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.Sh NAME
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.Nm urtwn
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.Nd Realtek RTL8188CU/RTL8192CU USB IEEE 802.11b/g/n wireless network device
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.Sh SYNOPSIS
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.Cd "urtwn* at uhub? port ?"
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.Sh DESCRIPTION
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The
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.Nm
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driver supports USB 2.0 wireless network devices based on Realtek
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RTL8188CUS, RTL8188CE-VAU, RTL8188RU, and RTL8192CU chipsets.
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.Pp
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The RTL8188CUS is a highly integrated 802.11n adapter that combines
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a MAC, a 1T1R capable baseband and an RF in a single chip.
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It operates in the 2GHz spectrum only.
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The RTL8188RU is a high-power variant of the RTL8188CUS.
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The RTL8188CE-VAU is a PCI Express Mini Card adapter that attaches
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to the USB interface.
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.Pp
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The RTL8192CU is a highly integrated multiple-in, multiple-out (MIMO)
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802.11n adapter that combines a MAC, a 2T2R capable baseband and an
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RF in a single chip.
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It operates in the 2GHz spectrum only.
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.Pp
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These are the modes the
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.Nm
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driver can operate in:
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.Bl -tag -width "IBSS-masterXX"
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.It BSS mode
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Also known as
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.Em infrastructure
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mode, this is used when associating with an access point, through
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which all traffic passes.
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This mode is the default.
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.It IBSS mode
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Also known as
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.Em IEEE ad-hoc
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mode or
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.Em peer-to-peer
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mode.
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This is the standardized method of operating without an access point.
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Stations associate with a service set.
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However, actual connections between stations are peer-to-peer.
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.It Host AP
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In this mode the driver acts as an access point (base station)
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for other cards.
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.It monitor mode
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In this mode the driver is able to receive packets without
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associating with an access point.
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This disables the internal receive filter and enables the card to
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capture packets from networks which it wouldn't normally have access to,
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or to scan for access points.
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.El
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.Pp
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The
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.Nm
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driver can be configured to use
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Wired Equivalent Privacy (WEP) or
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Wi-Fi Protected Access (WPA-PSK and WPA2-PSK).
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WPA is the de facto encryption standard for wireless networks.
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It is strongly recommended that WEP
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not be used as the sole mechanism
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to secure wireless communication,
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due to serious weaknesses in it.
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.Pp
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The
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.Nm
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driver can be configured at runtime with
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.Xr ifconfig 8
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or on boot with
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.Xr ifconfig.if 5 .
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.Sh FILES
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The driver needs the following firmware files,
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which are loaded when an interface is attached:
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.Pp
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.Bl -tag -width Ds -offset indent -compact
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.It /libdata/firmware/if_urtwn/rtl8192cfw.bin
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.It /libdata/firmware/if_urtwn/rtl8192cfwU.bin
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.El
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.Sh HARDWARE
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The following adapters should work:
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.Pp
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.Bl -tag -width Ds -offset indent -compact
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.It Airlink101 AWLL5088
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.It Aus. Linx AL-9604R1S
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.It B-Link BL-LW05-5R
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.It Belkin F7D1102 Surf Wireless Micro
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.It D-Link DWA-121
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.It D-Link DWA-133
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.It D-Link DWA-135
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.It Digitus DN-7042
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.It Edimax EW-7811Un
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.It EDUP EP-N8508
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.It Full River FR-W100NUL
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.It Hercules Wireless N USB Pico HWNUp-150
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.It Netgear WNA1000A
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.It Planex GW-USEco300
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.It Planex GW-USNano2
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.It Planex GW-USValue-EZ
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.It Planex GW-USWExtreme
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.It POWCHIP POW-N18
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.It Sitecom N300 USB (WLA-2102 v1)
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.It Sitecom WL-365
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.It Solwise NET-WL-UMD-606N
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.It TRENDnet TEW-648UBM
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.El
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.Sh EXAMPLES
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The following
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.Xr ifconfig.if 5
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example configures urtwn0 to join whatever network is available on boot,
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using WEP key
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.Dq 0x1deadbeef1 ,
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channel 11, obtaining an IP address using DHCP:
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.Bd -literal -offset indent
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nwkey 0x1deadbeef1 chan 11
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dhcp
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.Ed
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.Pp
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Join an existing BSS network,
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.Dq my_net :
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.Bd -literal -offset indent
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# ifconfig urtwn0 192.168.1.1 netmask 0xffffff00 nwid my_net
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.Ed
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.Sh DIAGNOSTICS
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.Bl -diag
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.It "urtwn%d: error %d, could not read firmware %s"
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For some reason, the driver was unable to read the microcode file from the
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filesystem.
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The file might be missing or corrupted.
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.It "urtwn%d: device timeout"
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A frame dispatched to the hardware for transmission did not complete in time.
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The driver will reset the hardware.
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This should not happen.
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.El
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.Sh SEE ALSO
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.Xr arp 4 ,
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.Xr netintro 4 ,
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.Xr usb 4 ,
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.Xr ifconfig.if 5 ,
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.Xr wpa_supplicant.conf 5 ,
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.Xr ifconfig 8 ,
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.Xr wpa_supplicant 8
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.Sh HISTORY
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The
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.Nm
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device driver first appeared in
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.Ox 4.9
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and in
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.Nx 6.0 .
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.Sh AUTHORS
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.An -nosplit
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The
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.Nm
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driver was written by
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.An Damien Bergamini
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.Aq damien@openbsd.org
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for
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.Ox
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and ported to
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.Nx
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by
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.An NONAKA Kimihiro
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.Aq nonaka@NetBSD.org .
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.Sh CAVEATS
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The
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.Nm
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driver does not support any of the 802.11n capabilities offered by the
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adapters.
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Additional work is required in
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.Xr ieee80211 9
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before those features can be supported.
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