RSU(4)							   BSD Kernel Interfaces Manual 						    RSU(4)

NAME

     rsu -- Realtek RTL8188SU/RTL8192SU USB IEEE 802.11b/g/n wireless network device

SYNOPSIS

     To compile this driver into the kernel, place the following lines in your kernel configuration file:

	   device ehci
	   device uhci
	   device ohci
	   device usb
	   device rsu
	   device wlan

     Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):

	   if_rsu_load="YES"

     After you have read the license in /usr/share/doc/legal/realtek you will want to add the following lines to loader.conf(5):

	   legal.realtek.license_ack=1
	   rsu-rtl8712fw_load="YES"

DESCRIPTION

     The rsu driver supports USB 2.0 wireless network devices based on Realtek RTL8188SU, RTL8191SU and RTL8192SU chipsets.

     The RTL8188SU 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 RTL8191SU is a highly integrated multiple-in, single-out (MISO) 802.11n adapter that combines a MAC, a 1T2R capable baseband and an RF in
     a single chip.  It operates in the 2GHz spectrum only.

     The RTL8192SU 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.

     These are the modes the rsu driver can operate in:

     BSS mode	    Also known as infrastructure mode, this is used when associating with an access point, through which all traffic passes.  This
		    mode is the default.

     The rsu driver can be configured to use Wired Equivalent Privacy (WEP) or Wi-Fi Protected Access (WPA-PSK and WPA2-PSK).  WPA is the de facto
     encryption standard for wireless networks.  It is strongly recommended that WEP not be used as the sole mechanism to secure wireless communi-
     cation, due to serious weaknesses in it.

     The rsu driver can be configured at runtime with ifconfig(8).

FILES

     The driver needs at least version 1.2 of the following firmware file, which is loaded when an interface is attached:

	   /boot/kernel/rsu-rtl8712fw.ko

HARDWARE

     The rsu driver provices support for Realtek RTL8188SU/RTL8192SU USB IEEE 802.11b/g/n wireless network adapters, including:

	   ASUS USB-N10
	   Belkin F7D1101 v1
	   D-Link DWA-131 A1
	   EDUP EP-MS150N(W)
	   Hercules HWGUn-54
	   Hercules HWNUm-300
	   Planex GW-USNano
	   Sitecom WL-349 v1
	   Sitecom WL-353
	   Sweex LW154
	   TRENDnet TEW-646UBH
	   TRENDnet TEW-648UB
	   TRENDnet TEW-649UB

EXAMPLES

     Join an existing BSS network (i.e., connect to an access point):

	   ifconfig wlan create wlandev rsu0 inet 192.168.0.20 
	       netmask 0xffffff00

     Join a specific BSS network with network name ``my_net'':

	   ifconfig wlan create wlandev rsu0 ssid my_net up

     Join a specific BSS network with 64-bit WEP encryption:

	   ifconfig wlan create wlandev rsu0 ssid my_net 
		   wepmode on wepkey 0x1234567890 weptxkey 1 up

DIAGNOSTICS

     %s: failed load firmware of file rsu-rtl8712fw  For some reason, the driver was unable to read the microcode file from the filesystem.  The
     file might be missing or corrupted.

     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.

SEE ALSO

     intro(1), netintro(4), rsufw(4), usb(4), wlan(4), arp(8), hostapd(8), ifconfig(8), wpa_supplicant(8)

HISTORY

     The rsu driver first appeared in OpenBSD 4.9 and FreeBSD 10.0.

AUTHORS

     The rsu driver was written by Damien Bergamini <damien@openbsd.org> and ported by Rui Paulo <rpaulo@freebsd.org>.

CAVEATS

     The rsu driver does not support any of the 802.11n capabilities offered by the adapters.

BSD
								 November 19, 2014							       BSD