e17304ca2a
Mention URTWN_WITHOUT_UCODE option (r295871), hardware encryption support (r292175), IBSS (r290651) and HOSTAP (r290631) mode support; cleanup CAVEATS section (some 11n support was added in r297175 + add a note about current rate control issues).
191 lines
5.2 KiB
Groff
191 lines
5.2 KiB
Groff
.\" 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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.\" $FreeBSD$
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.\"
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.Dd June 9, 2016
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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/RTL8188RU/RTL8188EU/RTL8192CU USB IEEE 802.11b/g/n wireless network device
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.Sh SYNOPSIS
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.Cd "options URTWN_WITHOUT_UCODE"
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.Pp
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To compile this driver into the kernel,
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place the following lines in your
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kernel configuration file:
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.Bd -ragged -offset indent
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.Cd "device ehci"
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.Cd "device uhci"
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.Cd "device ohci"
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.Cd "device usb"
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.Cd "device urtwn"
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.Cd "device wlan"
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.Ed
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.Pp
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Alternatively, to load the driver as a
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module at boot time, place the following line in
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.Xr loader.conf 5 :
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.Bd -literal -offset indent
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if_urtwn_load="YES"
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.Ed
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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, RTL8188EUS, RTL8188RU and RTL8192CU chipsets.
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.Pp
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The RTL8188CUS and RTL8188EUS are highly integrated 802.11n adapters that
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combine a MAC, a 1T1R capable baseband and an RF in a single chip.
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They operate 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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All chips have hardware support for WEP, AES-CCM and TKIP encryption.
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.Pp
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The driver supports
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.Cm station ,
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.Cm adhoc ,
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.Cm hostap ,
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and
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.Cm monitor
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mode operation.
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Only one virtual interface may be configured at any time.
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.Pp
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This driver may use the firmware built with the
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.Nm urtwnfw
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module for some additional features
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(when URTWN_WITHOUT_UCODE kernel option is not set).
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.Sh FILES
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.Bl -tag -width ".Pa /usr/share/doc/legal/realtek.LICENSE" -compact
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.It Pa /usr/share/doc/legal/realtek.LICENSE
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.Nm
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firmware license
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.El
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.Sh HARDWARE
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The
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.Nm
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driver supports Realtek RTL8188CU/RTL8188RU/RTL8188EU/RTL8192CU based USB
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IEEE 802.11b/g/n wireless network adapters, including:
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.Pp
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.Bl -tag -width Ds -offset indent -compact
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.It Alfa AWUS036NHR v2
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.It ASUS USB-N10 NANO
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.It Belkin F7D1102 Surf Wireless Micro
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.It D-Link DWA-123 rev D1
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.It D-Link DWA-125 rev D1
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.It D-Link DWA-131
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.It Edimax EW-7811Un
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.It Elecom WDC-150SU2M
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.It Netgear WNA1000M
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.It Realtek RTL8192CU
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.It Realtek RTL8188CUS
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.It TP-LINK TL-WN723N v3
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.It TP-LINK TL-WN725N v2
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.El
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.Sh EXAMPLES
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Join an existing BSS network (i.e., connect to an access point):
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.Bd -literal -offset indent
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ifconfig wlan create wlandev urtwn0 inet 192.168.0.20 \e
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netmask 0xffffff00
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.Ed
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.Pp
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Join a specific BSS network with network name
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.Dq Li my_net :
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.Pp
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.Dl "ifconfig wlan create wlandev urtwn0 ssid my_net up"
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.Pp
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Join a specific BSS network with 64-bit WEP encryption:
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.Bd -literal -offset indent
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ifconfig wlan create wlandev urtwn0 ssid my_net \e
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wepmode on wepkey 0x1234567890 weptxkey 1 up
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.Ed
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.Pp
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Create an IBSS network with 128-bit WEP encryption on the channel 4:
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.Bd -literal -offset indent
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ifconfig wlan0 create wlandev urtwn0 wlanmode adhoc ssid my_net \e
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wepmode on wepkey 0x01020304050607080910111213 weptxkey 1 \e
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channel 4
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.Ed
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.Pp
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Join/create an 802.11b IBSS network with network name
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.Dq Li my_net :
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.Bd -literal -offset indent
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ifconfig wlan0 create wlandev urtwn0 wlanmode adhoc
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ifconfig wlan0 inet 192.168.0.22 netmask 0xffffff00 ssid my_net \e
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mode 11b
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.Ed
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.Pp
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Create an 802.11g host-based access point:
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.Bd -literal -offset indent
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ifconfig wlan0 create wlandev urtwn0 wlanmode hostap
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ifconfig wlan0 inet 192.168.0.10 netmask 0xffffff00 ssid my_ap \e
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mode 11g
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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 intro 4 ,
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.Xr netintro 4 ,
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.Xr urtwnfw 4 ,
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.Xr usb 4 ,
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.Xr wlan 4 ,
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.Xr wlan_amrr 4 ,
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.Xr wlan_ccmp 4 ,
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.Xr wlan_tkip 4 ,
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.Xr wlan_wep 4 ,
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.Xr ifconfig 8 ,
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.Xr wpa_supplicant 8
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.Rs
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.%T Realtek
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.%U http://www.realtek.com.tw
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.Re
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.Sh HISTORY
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The
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.Nm
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driver first appeared in
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.Ox 4.9
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and
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.Fx 10.0 .
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.Sh AUTHORS
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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 Aq Mt damien@openbsd.org .
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.Sh CAVEATS
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The
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.Nm
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driver currently does not support A-MPDU 802.11n transmit aggregation.
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.Pp
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For non-RTL8188EUS chips
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.Dq "rate control"
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algorithm is absent; this may result in increased packet loss in noisy
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networks.
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