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NetBSD 6.1.5 - man page for otus (netbsd section 4)

OTUS(4) 			   BSD Kernel Interfaces Manual 			  OTUS(4)

NAME
     otus -- Atheros USB IEEE 802.11a/g/n wireless network device

SYNOPSIS
     otus* at uhub? port ?

DESCRIPTION
     The otus driver supports USB 2.0 wireless network devices based on Atheros Communications
     AR9001U chipset.

     The AR9001U chipset is made of an AR9170 MAC/Baseband and an AR9101 (1T2R), AR9102 (2T2R) or
     AR9104 (dual-band 2T2R) Radio.

     These are the modes the otus 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.

     monitor mode   In this mode the driver is able to receive packets without associating with
		    an access point.  This disables the internal receive filter and enables the
		    card to capture packets from networks which it wouldn't normally have access
		    to, or to scan for access points.

     The otus 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 net-
     works.  It is strongly recommended that WEP not be used as the sole mechanism to secure
     wireless communication, due to serious weaknesses in it.

     The otus driver can be configured at runtime with ifconfig(8) or on boot with
     ifconfig.if(5).

FILES
     The driver needs at least version 1.0 of the following firmware files, which are loaded when
     an interface is attached:

	   /libdata/firmware/if_otus/otus-init
	   /libdata/firmware/if_otus/otus-main

     Although these firmware files are freely redistributable, their usage is restricted.

HARDWARE
     The following adapters should work:

	   Arcadyan WN7512
	   CACE AirPcap Nx
	   D-Link DWA-130 rev D1
	   D-Link DWA-160 rev A1
	   D-Link DWA-160 rev A2
	   IO-Data WN-GDN/US2
	   NEC Aterm WL300NU-G
	   Netgear WNDA3100
	   Netgear WN111 v2
	   Planex GW-US300
	   SMC SMCWUSB-N2
	   TP-Link TL-WN821N
	   Ubiquiti SR71 USB
	   Unex DNUA-81
	   Z-Com UB81
	   Z-Com UB82
	   ZyXEL NWD-271N

EXAMPLES
     The following ifconfig.if(5) example configures otus0 to join whatever network is available
     on boot, using WEP key ``0x1deadbeef1'', channel 11, obtaining an IP address using DHCP:

	   nwkey 0x1deadbeef1 chan 11
	   dhcp

     Join an existing BSS network, ``my_net'':

	   # ifconfig otus0 192.168.1.1 netmask 0xffffff00 nwid my_net

     To use WPA, see wpa_supplicant(8) and wpa_supplicant.conf(5).

DIAGNOSTICS
     otus%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.

     otus%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.

SEE ALSO
     arp(4), ifmedia(4), netintro(4), usb(4), wpa_supplicant.conf(5), ifconfig(8),
     wpa_supplicant(8),

     Atheros Communications AR9001U-2NX/AR9001U-2NG/AR9001U-NG:
     http://www.atheros.com/pt/bulletins/AR9001USBBulletin.pdf

HISTORY
     The otus driver first appeared in OpenBSD 4.6.  It was ported to NetBSD by Anon Ymous and
     first appeared in NetBSD 6.0.

AUTHORS
     The otus driver was written by Damien Bergamini <damien@openbsd.org> based on source code
     licensed under the ISC released in 2008 by Atheros Communications for Linux.

CAVEATS
     The AVM FRITZ!WLAN USB Stick N adapter is currently not supported.

     The otus driver does not support any of the 802.11n capabilities offered by the AR9001U
     chipset.  Additional work is required in ieee80211(9) before those features can be sup-
     ported.

     The otus driver also does not currently support EDCA as this is missing in the NetBSD net-
     work stack.  The hooks for it are in the driver code.

BSD					 November 4, 2010				      BSD


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