atu —
Atmel AT76C50x USB IEEE 802.11b wireless network
device
atu* at uhub? port ?
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 associating 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 mechanism 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).
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
-
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
-
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
arp(4),
ifmedia(4),
intro(4),
netintro(4),
usb(4),
hostname.if(5),
ifconfig(8)
The
atu driver was written by
Daan Vreeken and ported to
OpenBSD by
Theo de
Raadt and
David Gwynne.
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.
![[OpenBSD]](/openbsd.gif){kind=small}