TI ACX100/ACX111 IEEE 802.11a/b/g
wireless network device
acx* at cardbus?
acx* at pci?
acx driver provides support for TI
TNETW1100/TNETW1100B (ACX100) and TNETW1130 (ACX111) based PCI/CardBus
The ACX100A and ACX100B are first generation 802.11b devices from TI. The ACX111 is a second generation device which supports 802.11b/g and in some cases 802.11a.
These are the modes the
acx driver can
- 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.
- Host AP
- In this mode the driver acts as an access point (base station) for other cards.
- 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.
acx driver can be configured to use
Wired Equivalent Privacy (WEP) in software for ACX111 or in hardware for
ACX100. It is strongly recommended that WEP not be used as the sole
mechanism to secure wireless communication, due to serious weaknesses in
The transmit speed is user-selectable or can be adapted automatically by the driver depending on the number of hardware transmission retries.
acx driver can be configured at
ifconfig(8) or on boot with
The driver needs a set of firmware files which are loaded when an interface is brought up:
These firmware files are not free because TI refuses to grant distribution rights. In fact they have rebuffed thousands of attempts to start a dialogue on this issue. As a result, even though OpenBSD includes the driver, the firmware files cannot be included and users have to download these files on their own.
A prepackaged version of the firmware can be installed using fw_update(1).
The following cards are among those supported by the
|Ergenic ERG WL-003||ACX100||CardBus||b|
|ZyXEL G-360 EE||ACX111||PCI||b/g|
The following example scans for available networks:
# ifconfig acx0 scan
The following hostname.if(5) example configures acx0 to join network “mynwid”, using WEP key “mywepkey”, obtaining an IP address using DHCP:
nwid mynwid nwkey mywepkey dhcp
The following hostname.if(5) example creates a host-based access point on boot:
inet 192.168.1.1 255.255.255.0 mediaopt hostap nwid mynwid nwkey mywepkey
arp(4), cardbus(4), ifmedia(4), intro(4), netintro(4), pci(4), hostname.if(5), hostapd(8), ifconfig(8)
acx driver first appeared in
acx driver was written by
Sepherosa Ziehau. The manual page was written by
Sascha Wildner. Both are based on the
team's original code.
The hardware specification was reverse engineered by the good folks at http://acx100.sourceforge.net. Without them this driver would not have been possible.