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usb: gadget: add RNDIS configfs options for class/subclass/protocol

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This adds 3 new options to the RNDIS gadget function configs. It allows
overriding the default USB interface class/subclass/protocol.

The motivation for this is that if you set the values to "ef" (Misc),
"04" (RNDIS), "01" (Ethernet) respectively, then the device will be
recognized by the rndiscmp.inf file in Windows Vista and newer and will
cause Windows to load the correct RNDIS driver without the need for a
custom (signed) .inf file.

Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
David Lechner
2017-07-29 20:12:57 -05:00
committed by Felipe Balbi
parent 6cea1449f6
commit 73517cf49b
4 changed files with 62 additions and 0 deletions
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3
Documentation/ABI/testing/configfs-usb-gadget-rndis
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@@ -12,3 +12,6 @@ Description:
Ethernet over USB link
dev_addr - MAC address of device's end of this
Ethernet over USB link
class - USB interface class, default is 02 (hex)
subclass - USB interface subclass, default is 06 (hex)
protocol - USB interface protocol, default is 00 (hex)