ipw3945d provides a regulatory daemon is responsible for controlling and configuring aspects of operating the hardware.

ipw3945d provides a regulatory daemon is responsible for controlling and configuring aspects of operating the hardware.

The daemon controls the aspects needed to operate the device within compliance of various regulatory agencies.

This includes controlling which channels are allowed to do active/passive scanning, transmit power levels, which channels are allowed to be transmitted on, and support for IEEE 802.11h (DFS and TPC).

The typical method for lauching the daemon is to spawn it from within the modprobe.conf or udev scripts as soon as the ipw3945 module is loaded. This can cause problems on systems where the module is loaded earlier in the boot process than the device is probed, or where the module load is delayed.

To support this model, the daemon supports the '--timeout' parameter which can be used to specify how long the daemon should look for the driver before giving up. The default value is 0, which will exit immediately if the driver is not found.

A value of -1 will result in the daemon waiting forever. Any other value specifies the number of seconds to wait. The daemon will poll the system once per second looking for the driver's sysfs entries.