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OTUS(4) FreeBSD Kernel Interfaces Manual OTUS(4) NAME otus -- Atheros USB IEEE 802.11a/b/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 asso- ciating 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 in- ternal receive filter and enables the card to capture packets from networks which it wouldn't normally have ac- cess to, or to scan for access points. The otus driver can be configured to use Wired Equivalent Privacy (WEP) or Wi-Fi Protected Access (WPA1 and WPA2). WPA2 is the current encryp- tion standard for wireless networks. It is strongly recommended that neither WEP nor WPA1 are used as the sole mechanism to secure wireless communication, due to serious weaknesses. WPA1 is disabled by default and may be enabled using the option "wpaprotos wpa1,wpa2". For standard WPA networks which use pre-shared keys (PSK), keys are configured using the "wpakey" option. WPA-Enterprise networks require use of the wpa_sup- plicant package. "wpaprotos wpa1,wpa2". For standard WPA networks which use pre-shared keys (PSK), keys are configured using the "wpakey" option. WPA-Enterprise networks require use of the wpa_supplicant package. The otus driver can be configured at runtime with ifconfig(8) or on boot with hostname.if(5). FILES The driver needs at least version 1.0 of the following firmware files, which are loaded when an interface is attached: /etc/firmware/otus-init /etc/firmware/otus-main Although these firmware files are freely redistributable, their usage is restricted. A prepackaged version of the firmware can be installed using fw_update(1). HARDWARE The following adapters should work: 3Com 3CRUSBN275 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 Networks SMCWUSB-N2 TP-Link TL-WN821N v1, v2 Ubiquiti SR71 USB Unex DNUA-81 Z-Com UB81 Z-Com UB82 ZyXEL NWD-271N EXAMPLES The following example scans for available networks: # ifconfig otus0 scan The following hostname.if(5) example configures otus0 to join network "mynwid", using WPA key "mywpakey", obtaining an IP address using DHCP: nwid mynwid wpakey mywpakey dhcp DIAGNOSTICS otus0: error N, could not read firmware ... For some reason, the driver was unable to read the microcode file from the filesystem. The file might be missing or corrupted. otus0: device timeout A frame dispatched to the hardware for transmis- sion did not complete in time. The driver will reset the hardware. This should not happen. SEE ALSO arp(4), ifmedia(4), intro(4), netintro(4), usb(4), hostname.if(5), ifconfig(8) HISTORY The otus driver first appeared in OpenBSD 4.6. AUTHORS The otus driver was written by Damien Bergamini <damien.bergamini@free.fr> 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) be- fore those features can be supported. This driver does not support powersave mode. FreeBSD 13.0 November 10, 2019 FreeBSD 13.0
NAME | SYNOPSIS | DESCRIPTION | FILES | HARDWARE | EXAMPLES | DIAGNOSTICS | SEE ALSO | HISTORY | AUTHORS | CAVEATS
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