linux/Documentation/ABI/testing/sysfs-class-usb_host
David Vrabel c8cf2465fc uwb: document UWB and WUSB sysfs files
Add some brief documentation on the UWB and WUSB related sysfs files.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-09-17 16:54:35 +01:00

25 lines
1.1 KiB
Text

What: /sys/class/usb_host/usb_hostN/wusb_chid
Date: July 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
Description:
Write the CHID (16 space-separated hex octets) for this host controller.
This starts the host controller, allowing it to accept connection from
WUSB devices.
Set an all zero CHID to stop the host controller.
What: /sys/class/usb_host/usb_hostN/wusb_trust_timeout
Date: July 2008
KernelVersion: 2.6.27
Contact: David Vrabel <david.vrabel@csr.com>
Description:
Devices that haven't sent a WUSB packet to the host
within 'wusb_trust_timeout' ms are considered to have
disconnected and are removed. The default value of
4000 ms is the value required by the WUSB
specification.
Since this relates to security (specifically, the
lifetime of PTKs and GTKs) it should not be changed
from the default.