1.\" $OpenBSD: rsu.4,v 1.11 2013/02/14 07:40:42 jmc Exp $ 2.\" $FreeBSD$ 3.\" 4.\" Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr> 5.\" 6.\" Permission to use, copy, modify, and distribute this software for any 7.\" purpose with or without fee is hereby granted, provided that the above 8.\" copyright notice and this permission notice appear in all copies. 9.\" 10.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17.\" 18.Dd July 29 2013 19.Dt RSU 4 20.Os 21.Sh NAME 22.Nm rsu 23.Nd Realtek RTL8188SU/RTL8192SU USB IEEE 802.11b/g/n wireless network device 24.Sh SYNOPSIS 25To compile this driver into the kernel, 26place the following lines in your kernel configuration file: 27.Bd -ragged -offset indent 28.Cd "device ehci" 29.Cd "device uhci" 30.Cd "device ohci" 31.Cd "device usb" 32.Cd "device rsu" 33.Cd "device wlan" 34.Ed 35.Pp 36Alternatively, to load the driver as a module at boot time, 37place the following line in 38.Xr loader.conf 5 : 39.Bd -literal -offset indent 40if_rsu_load="YES" 41.Ed 42.Pp 43After you have read the license in /usr/share/doc/legal/realtek 44you will want to add the following lines to 45.Xr loader.conf 5 : 46.Bd -literal -offset indent 47legal.realtek.license_ack=1 48rsu-rtl8712fw_load="YES" 49.Ed 50.Sh DESCRIPTION 51The 52.Nm 53driver supports USB 2.0 wireless network devices based on Realtek 54RTL8188SU, RTL8191SU and RTL8192SU chipsets. 55.Pp 56The RTL8188SU is a highly integrated 802.11n adapter that combines 57a MAC, a 1T1R capable baseband and an RF in a single chip. 58It operates in the 2GHz spectrum only. 59.Pp 60The RTL8191SU is a highly integrated multiple-in, single-out (MISO) 61802.11n adapter that combines a MAC, a 1T2R capable baseband and an 62RF in a single chip. 63It operates in the 2GHz spectrum only. 64.Pp 65The RTL8192SU is a highly integrated multiple-in, multiple-out (MIMO) 66802.11n adapter that combines a MAC, a 2T2R capable baseband and an 67RF in a single chip. 68It operates in the 2GHz spectrum only. 69.Pp 70These are the modes the 71.Nm 72driver can operate in: 73.Bl -tag -width "IBSS-masterXX" 74.It BSS mode 75Also known as 76.Em infrastructure 77mode, this is used when associating with an access point, through 78which all traffic passes. 79This mode is the default. 80.El 81.Pp 82The 83.Nm 84driver can be configured to use 85Wired Equivalent Privacy (WEP) or 86Wi-Fi Protected Access (WPA-PSK and WPA2-PSK). 87WPA is the de facto encryption standard for wireless networks. 88It is strongly recommended that WEP 89not be used as the sole mechanism 90to secure wireless communication, 91due to serious weaknesses in it. 92.Pp 93The 94.Nm 95driver can be configured at runtime with 96.Xr ifconfig 8 97or on boot with 98.Xr hostname 1 . 99.Sh FILES 100The driver needs at least version 1.2 of the following firmware file, 101which is loaded when an interface is attached: 102.Pp 103.Bl -tag -width Ds -offset indent -compact 104.It /boot/kernel/rsu-rtl8712fw.ko 105.El 106.Sh HARDWARE 107The following adapters should work: 108.Pp 109.Bl -tag -width Ds -offset indent -compact 110.It ASUS USB-N10 111.It Belkin F7D1101 v1 112.It D-Link DWA-131 A1 113.It EDUP EP-MS150N(W) 114.It Hercules HWGUn-54 115.It Hercules HWNUm-300 116.It Planex GW-USNano 117.It Sitecom WL-349 v1 118.It Sitecom WL-353 119.It Sweex LW154 120.It TRENDnet TEW-648UB 121.It TRENDnet TEW-649UB 122.El 123.Sh EXAMPLES 124Join an existing BSS network (i.e., connect to an access point): 125.Bd -literal -offset indent 126ifconfig wlan create wlandev rsu0 inet 192.168.0.20 \e 127 netmask 0xffffff00 128.Ed 129.Pp 130Join a specific BSS network with network name 131.Dq Li my_net : 132.Pp 133.Dl "ifconfig wlan create wlandev rsu0 ssid my_net up" 134.Pp 135Join a specific BSS network with 64-bit WEP encryption: 136.Bd -literal -offset indent 137ifconfig wlan create wlandev rsu0 ssid my_net \e 138 wepmode on wepkey 0x1234567890 weptxkey 1 up 139.Ed 140.Sh DIAGNOSTICS 141.Bl -diag 142.It "%s: failed load firmware of file rsu-rtl8712fw" 143For some reason, the driver was unable to read the microcode file from the 144filesystem. 145The file might be missing or corrupted. 146.It "device timeout" 147A frame dispatched to the hardware for transmission did not complete in time. 148The driver will reset the hardware. 149This should not happen. 150.El 151.Sh SEE ALSO 152.Xr hostname 1 , 153.Xr intro 1 , 154.Xr usb 3 , 155.Xr netintro 4 , 156.Xr rsufw 4 , 157.Xr wlan 4 , 158.Xr arp 8 , 159.Xr ifconfig 8 160.Sh HISTORY 161The 162.Nm 163driver first appeared in 164.Ox 4.9 and 165.Fx 10.0 . 166.Sh AUTHORS 167.An -nosplit 168The 169.Nm 170driver was written by 171.An Damien Bergamini Aq damien@openbsd.org 172and ported by 173.An Rui Paulo Aq rpaulo@freebsd.org . 174.Sh CAVEATS 175The 176.Nm 177driver does not support any of the 802.11n capabilities offered by the 178adapters. 179