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.LICENSE  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 communication, 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>.  The 802.11n support was added by Adrian Chadd <adrian@freebsd.org>.

CAVEATS

       The rsu driver currently does not support 802.11n transmit aggregation, either A-MSDU or A-MPDU.

Debian                                          October 15, 2015                                          RSU(4)