1OZWPAN USB Host Controller Driver
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3This driver is a USB HCD driver that does not have an associated a physical
4device but instead uses Wi-Fi to communicate with the wireless peripheral.
5The USB requests are converted into a layer 2 network protocol and transmitted
6on the network using an ethertype (0x892e) regestered to Ozmo Device Inc.
7This driver is compatible with existing wireless devices that use Ozmo Devices
8technology.
9
10To operate the driver must be bound to a suitable network interface. This can
11be done when the module is loaded (specifying the name of the network interface
12as a parameter - e.g. 'insmod ozwpan g_net_dev=go0') or can be bound after
13loading using an ioctl call. See the ozappif.h file and the ioctls
14OZ_IOCTL_ADD_BINDING and OZ_IOCTL_REMOVE_BINDING.
15
16The devices connect to the host use Wi-Fi Direct so a network card that supports
17Wi-Fi direct is required. A recent version (0.8.x or later) version of the
18wpa_supplicant can be used to setup the network interface to create a persistent
19autonomous group (for older pre-WFD peripherals) or put in a listen state to
20allow group negotiation to occur for more recent devices that support WFD.
21
22The protocol used over the network does not directly mimic the USB bus
23transactions as this would be rather busy and inefficient. Instead the chapter 9
24requests are converted into a request/response pair of messages. (See
25ozprotocol.h for data structures used in the protocol).
26