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ATU(4)		       FreeBSD Kernel Interfaces Manual			ATU(4)

NAME
     atu -- Atmel AT76C50x USB IEEE 802.11b wireless network device

SYNOPSIS
     atu* at uhub? port	?

DESCRIPTION
     The atu driver provides support for wireless network adapters based
     around the	Atmel AT76C503,	AT76C503A, AT76C505, and AT76C505A USB
     chipsets and four companion radio chipsets.

     The atu driver encapsulates all IP	and ARP	traffic	as 802.11 frames,
     though it can receive either 802.11 or 802.3 frames.

     These are the modes the atu driver	can operate in:

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

     IBSS mode	    Also known as IEEE ad-hoc mode or peer-to-peer mode.  This
		    is the standardized	method of operating without an access
		    point.  Stations associate with a service set.  However,
		    actual connections between stations	are peer-to-peer.

     The atu driver can	be configured to use hardware Wired Equivalent Privacy
     (WEP).  It	is strongly recommended	that WEP not be	used as	the sole mech-
     anism to secure wireless communication, due to serious weaknesses in it.

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

FILES
     The adapter needs some firmware files, which are loaded on	demand by the
     driver when the device is attached:

	   /etc/firmware/atu-at76c503-i3863-int
	   /etc/firmware/atu-at76c503-i3863-ext
	   /etc/firmware/atu-at76c503-rfmd-acc-int
	   /etc/firmware/atu-at76c503-rfmd-acc-ext
	   /etc/firmware/atu-at76c505-rfmd-int
	   /etc/firmware/atu-at76c505-rfmd-ext
	   /etc/firmware/atu-intersil-int
	   /etc/firmware/atu-intersil-ext
	   /etc/firmware/atu-rfmd-int
	   /etc/firmware/atu-rfmd-ext
	   /etc/firmware/atu-rfmd2958-int
	   /etc/firmware/atu-rfmd2958-ext
	   /etc/firmware/atu-rfmd2958smc-int
	   /etc/firmware/atu-rfmd2958smc-ext

HARDWARE
     The following devices are known to	be supported by	the atu	driver:

	   3Com	3CRSHEW696
	   AboCom BWU613
	   Accton 2664W
	   Acer	Peripherals AWL300
	   Acer	Peripherals AWL400
	   Actiontec 802UAT1
	   Addtron AWU120
	   Aincomm AWU2000B
	   Askey Computer Voyager 1010
	   Askey Computer WLL013 (Intersil Radio)
	   Askey Computer WLL013 (RFMD Radio)
	   Atmel AT76C503 (Intersil Radio)
	   Atmel AT76C503 (RFMD	Radio)
	   Atmel AT76C505 (RFMD	Radio)
	   Atmel AT76C505 (RFMD	2958 Radio)
	   Atmel AT76C505A (RFMD 2958 Radio)
	   Atmel AT76C505AS (RFMD 2958 Radio)
	   Belkin F5D6050
	   Bluetake BW002
	   Compaq iPAQ h54xx/h55xx Internal WLAN
	   Conceptronic	C11U
	   Conceptronic	WL210
	   Corega WLAN USB Stick 11
	   Dick	Smith Electronics CHUSB	611G
	   Dick	Smith Electronics WL200U
	   Dick	Smith Electronics WL240U
	   Dick	Smith Electronics XH1153
	   D-Link DWL-120 rev E
	   Geowave GW-US11S
	   Gigabyte GN-WLBM101
	   Gigaset WLAN
	   Hewlett-Packard HN210W
	   Intel AP310 AnyPoint	II
	   I/O DATA USB	WN-B11
	   Lexar 2662W-AR
	   Linksys WUSB11 802.11b
	   Linksys WUSB11 802.11b v2.8
	   MSI WLAN
	   Netgear MA101
	   Netgear MA101 rev B
	   OQO model 01	WiFi
	   Ovislink AirLive WL-1120USB
	   OvisLink AirLive WL-1130USB
	   Planex Communications GW-US11S
	   Samsung SWL2100W
	   Siemens WLL013
	   SMC EZ Connect 11Mbps (SMC2662w)
	   SMC EZ Connect 11Mbps v2 (SMC2662wV2)
	   Tekram U-300C
	   TRENDnet TEW-229UB
	   W-Buddie WN210
	   Z-Com M4Y-750

EXAMPLES
     The following example scans for available networks:

	   # ifconfig atu0 scan

     The following hostname.if(5) example configures atu0 to join network
     "mynwid", using WEP key "mywepkey", obtaining an IP address using DHCP:

	   nwid	mynwid nwkey mywepkey
	   dhcp

SEE ALSO
     arp(4), ifmedia(4), intro(4), netintro(4),	usb(4),	hostname.if(5),
     ifconfig(8)

AUTHORS
     The atu driver was	written	by Daan	Vreeken	and ported to OpenBSD by Theo
     de	Raadt and David	Gwynne.

CAVEATS
     The atu driver does not support a lot of the functionality	available in
     the hardware.  More work is required to properly support the IBSS,	power
     management, and selectable	transmission rate features.

FreeBSD	13.0			March 29, 2019			  FreeBSD 13.0

NAME | SYNOPSIS | DESCRIPTION | FILES | HARDWARE | EXAMPLES | SEE ALSO | AUTHORS | CAVEATS

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