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Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr>
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.Dd October 6, 2013 .Dt URTWN 4 .Os .Sh NAME .Nm urtwn .Nd Realtek RTL8188CU/RTL8192CU USB IEEE 802.11b/g/n 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 urtwn" .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_urtwn_load="YES" .Ed .Sh DESCRIPTION The .Nm driver supports USB 2.0 wireless network devices based on Realtek RTL8188CUS, RTL8188CE-VAU, RTL8188RU and RTL8192CU chipsets.
p The RTL8188CUS is a highly integrated 802.11n adapter that combines a MAC, a 1T1R capable baseband and an RF in a single chip. It operates in the 2GHz spectrum only. The RTL8188RU is a high-power variant of the RTL8188CUS. The RTL8188CE-VAU is a PCI Express Mini Card adapter that attaches to the USB interface.
p The RTL8192CU is a highly integrated multiple-in, multiple-out (MIMO) 802.11n adapter that combines a MAC, a 2T2R capable baseband and an RF in a single chip. It operates in the 2GHz spectrum only. .Sh HARDWARE The following adapters should work:
p l -tag -width Ds -offset indent -compact t Belkin F7D1102 Surf Wireless Micro t D-Link DWA-131 t Edimax EW-7811Un t Netgear WNA1000M t Realtek RTL8192CU t Realtek RTL8188CUS .El .Sh EXAMPLES Join an existing BSS network (i.e., connect to an access point): d -literal -offset indent ifconfig wlan create wlandev urtwn0 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 urtwn0 ssid my_net up"
p Join a specific BSS network with 64-bit WEP encryption: d -literal -offset indent ifconfig wlan create wlandev urtwn0 ssid my_net \e wepmode on wepkey 0x1234567890 weptxkey 1 up .Ed .Sh DIAGNOSTICS l -diag t "urtwn%d: error %d, could not read firmware %s" For some reason, the driver was unable to read the microcode file from the filesystem. The file might be missing or corrupted. t "urtwn%d: device timeout" A frame dispatched to the hardware for transmission did not complete in time. The driver will reset the hardware. This should not happen. .El .Sh SEE ALSO .Xr intro 4 , .Xr netintro 4 , .Xr usb 4 , .Xr wlan 4 , .Xr wlan_ccmp 4 , .Xr wlan_tkip 4 , .Xr wlan_wep 4 , .Xr ifconfig 8 , .Xr wpa_supplicant 8 .Rs .%T Realtek .%U http://www.realtek.com.tw .Re .Sh HISTORY The .Nm driver first appeared in .Ox 4.9 and .Fx 10.0 . .Sh AUTHORS The .Nm driver was written by .An Damien Bergamini Aq damien@openbsd.org . .Sh CAVEATS The .Nm driver does not support any of the 802.11n capabilities offered by the adapters.