What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_* Date: August 2008 KernelVersion: 2.6.27 Contact: David Vrabel Description: Various files for managing Cable Based Association of (wireless) USB devices. The sequence of operations should be: 1. Device is plugged in. 2. The connection manager (CM) sees a device with CBA capability. (the wusb_chid etc. files in /sys/devices/blah/OURDEVICE). 3. The CM writes the host name, supported band groups, and the CHID (host ID) into the wusb_host_name, wusb_host_band_groups and wusb_chid files. These get sent to the device and the CDID (if any) for this host is requested. 4. The CM can verify that the device's supported band groups (wusb_device_band_groups) are compatible with the host. 5. The CM reads the wusb_cdid file. 6. The CM looks it up its database. - If it has a matching CHID,CDID entry, the device has been authorized before and nothing further needs to be done. - If the CDID is zero (or the CM doesn't find a matching CDID in its database), the device is assumed to be not known. The CM may associate the host with device by: writing a randomly generated CDID to wusb_cdid and then a random CK to wusb_ck (this uploads the new CC to the device). CMD may choose to prompt the user before associating with a new device. 7. Device is unplugged. References: [WUSB-AM] Association Models Supplement to the Certified Wireless Universal Serial Bus Specification, version 1.0. What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_chid Date: August 2008 KernelVersion: 2.6.27 Contact: David Vrabel Description: The CHID of the host formatted as 16 space-separated hex octets. Writes fetches device's supported band groups and the the CDID for any existing association with this host. What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_host_name Date: August 2008 KernelVersion: 2.6.27 Contact: David Vrabel Description: A friendly name for the host as a UTF-8 encoded string. What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_host_band_groups Date: August 2008 KernelVersion: 2.6.27 Contact: David Vrabel Description: The band groups supported by the host, in the format defined in [WUSB-AM]. What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_device_band_groups Date: August 2008 KernelVersion: 2.6.27 Contact: David Vrabel Description: The band groups supported by the device, in the format defined in [WUSB-AM]. What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_cdid Date: August 2008 KernelVersion: 2.6.27 Contact: David Vrabel Description: The device's CDID formatted as 16 space-separated hex octets. What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_ck Date: August 2008 KernelVersion: 2.6.27 Contact: David Vrabel Description: Write 16 space-separated random, hex octets to associate with the device.