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$FreeBSD: stable/11/share/man/man4/urtwn.4 301748 2016-06-09 17:26:54Z avos $
.Dd June 9, 2016 .Dt URTWN 4 .Os .Sh NAME .Nm urtwn .Nd Realtek RTL8188CU/RTL8188RU/RTL8188EU/RTL8192CU USB IEEE 802.11b/g/n wireless network device .Sh SYNOPSIS .Cd "options URTWN_WITHOUT_UCODE"
p 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, RTL8188EUS, RTL8188RU and RTL8192CU chipsets.
p The RTL8188CUS and RTL8188EUS are highly integrated 802.11n adapters that combine a MAC, a 1T1R capable baseband and an RF in a single chip. They operate 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.
p All chips have hardware support for WEP, AES-CCM and TKIP encryption.
p The driver supports .Cm station , .Cm adhoc , .Cm hostap , and .Cm monitor mode operation. Only one virtual interface may be configured at any time.
p This driver may use the firmware built with the .Nm urtwnfw module for some additional features (when URTWN_WITHOUT_UCODE kernel option is not set). .Sh FILES l -tag -width ".Pa /usr/share/doc/legal/realtek.LICENSE" -compact t Pa /usr/share/doc/legal/realtek.LICENSE .Nm firmware license .El .Sh HARDWARE The .Nm driver supports Realtek RTL8188CU/RTL8188RU/RTL8188EU/RTL8192CU based USB IEEE 802.11b/g/n wireless network adapters, including:
p l -tag -width Ds -offset indent -compact t Alfa AWUS036NHR v2 t ASUS USB-N10 NANO t Belkin F7D1102 Surf Wireless Micro t D-Link DWA-123 rev D1 t D-Link DWA-125 rev D1 t D-Link DWA-131 t Edimax EW-7811Un t Elecom WDC-150SU2M t Netgear WNA1000M t Realtek RTL8192CU t Realtek RTL8188CUS t TP-LINK TL-WN723N v3 t TP-LINK TL-WN725N v2 .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
p Create an IBSS network with 128-bit WEP encryption on the channel 4: d -literal -offset indent ifconfig wlan0 create wlandev urtwn0 wlanmode adhoc ssid my_net \e wepmode on wepkey 0x01020304050607080910111213 weptxkey 1 \e channel 4 .Ed
p Join/create an 802.11b IBSS network with network name .Dq Li my_net : d -literal -offset indent ifconfig wlan0 create wlandev urtwn0 wlanmode adhoc ifconfig wlan0 inet 192.168.0.22 netmask 0xffffff00 ssid my_net \e mode 11b .Ed
p Create an 802.11g host-based access point: d -literal -offset indent ifconfig wlan0 create wlandev urtwn0 wlanmode hostap ifconfig wlan0 inet 192.168.0.10 netmask 0xffffff00 ssid my_ap \e mode 11g .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 urtwnfw 4 , .Xr usb 4 , .Xr wlan 4 , .Xr wlan_amrr 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 Mt damien@openbsd.org . .Sh CAVEATS The .Nm driver currently does not support A-MPDU 802.11n transmit aggregation.
p For non-RTL8188EUS chips .Dq "rate control" algorithm is absent; this may result in increased packet loss in noisy networks.