linux/drivers/staging/ozwpan
Alexey Khoroshilov 330b5e80ef staging: ozwpan: implement error handling in ozwpan_init()
Errors are correctly handled in oz_cdev_register() and oz_protocol_init(),
but then they are ignored in ozwpan_init().

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-26 13:13:13 +01:00
..
Kconfig
Makefile
README
TODO staging: ozwpan: Change Maintainer 2014-05-23 21:10:50 +09:00
ozappif.h
ozcdev.c staging: ozwpan: fix missing blank line after declaration 2014-09-08 13:26:33 -07:00
ozcdev.h
ozdbg.h
ozeltbuf.c staging: ozwpan: fix missing blank line after declaration 2014-09-08 13:26:33 -07:00
ozeltbuf.h staging: ozwpan: Use slab cache for oz_elt_info allocation 2014-08-16 12:23:12 -07:00
ozhcd.c staging: ozwpan: Move code from success handling to error handling 2015-03-06 16:14:08 -08:00
ozhcd.h
ozmain.c staging: ozwpan: implement error handling in ozwpan_init() 2015-03-26 13:13:13 +01:00
ozpd.c staging: ozwpan: Move code from success handling to error handling 2015-03-06 16:14:08 -08:00
ozpd.h staging: ozwpan: Use slab cache for oz_tx_frame allocation 2014-08-16 12:23:12 -07:00
ozproto.c staging: ozwpan: remove extra parentheses around left bit shift operations 2015-03-06 15:24:23 -08:00
ozproto.h staging: ozwpan: Remove typedefs 2014-09-28 22:03:58 -04:00
ozprotocol.h staging: ozwpan: Simplify app interface 2014-08-16 12:23:12 -07:00
ozurbparanoia.c
ozurbparanoia.h
ozusbif.h staging:ozwpan:Fix sparse warning of incorrect argument type 2014-03-18 11:58:26 -07:00
ozusbsvc.c staging: ozwpan: fix missing blank line after declaration 2014-09-08 13:26:33 -07:00
ozusbsvc.h
ozusbsvc1.c staging: ozwpan: Remove useless cast on void pointer 2014-10-30 13:05:48 -07:00

README

OZWPAN USB Host Controller Driver
---------------------------------
This driver is a USB HCD driver that does not have an associated a physical
device but instead uses Wi-Fi to communicate with the wireless peripheral.
The USB requests are converted into a layer 2 network protocol and transmitted
on the network using an ethertype (0x892e) regestered to Ozmo Device Inc.
This driver is compatible with existing wireless devices that use Ozmo Devices
technology.

To operate the driver must be bound to a suitable network interface. This can
be done when the module is loaded (specifying the name of the network interface
as a parameter - e.g. 'insmod ozwpan g_net_dev=go0') or can be bound after
loading using an ioctl call. See the ozappif.h file and the ioctls
OZ_IOCTL_ADD_BINDING and OZ_IOCTL_REMOVE_BINDING.

The devices connect to the host use Wi-Fi Direct so a network card that supports
Wi-Fi direct is required. A recent version (0.8.x or later) version of the
wpa_supplicant can be used to setup the network interface to create a persistent
autonomous group (for older pre-WFD peripherals) or put in a listen state to
allow group negotiation to occur for more recent devices that support WFD.

The protocol used over the network does not directly mimic the USB bus
transactions as this would be rather busy and inefficient. Instead the chapter 9
requests are converted into a request/response pair of messages. (See
ozprotocol.h for data structures used in the protocol).