Messages in this thread | | | From | Jeremy White <> | Subject | [RFC PATCH 0/1] RFC - Implement a usbredir kernel module | Date | Tue, 30 Jun 2015 16:44:09 -0500 |
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The following patch proposes a new kernel module to provide an alternate protocol for transporting USB devices over a TCP/IP connection.
This flows from a few conversations on the Spice devel mailing list.[1][2]
I am relying heavily on the opinion of Hans de Goede, who believes that the usbredir protocol is superior to that used by the existing usbip kernel module[3].
The basic approach in this module is the same as usbip (virtual hcd driver) but it attempts to support a configurable number of devices and hubs, rather than just one hub and the limit of 8 devices.
This version of the code should be sufficient to review my general approach, but it is known to be incomplete. I have successfully mounted and operated a thumb drive across the interface.
Hopefully it is enough to warrant advice and comments; feedback is greatly appreciated.
Anyone wishing to test this will also need a related set of usbredir patches, recently sent to the spice-devel mailing list.[4]
Roughly half of the code (all of the code that fails checkpatch <grin>) was copied, essentially unchanged, from the usbredir project. I felt that diffability was more important than checkpatch; I stand ready to be corrected.
After review, I plan to build a fairly extensive set of unit tests (see the new usbredirtestserver in [3]), and would hope to submit a complete module later in the summer.
Cheers,
Jeremy
[1] http://lists.freedesktop.org/archives/spice-devel/2014-August/017145.html [2] http://lists.freedesktop.org/archives/spice-devel/2015-April/019451.html [3] http://lists.freedesktop.org/archives/spice-devel/2014-August/017174.html [4] http://lists.freedesktop.org/archives/spice-devel/2015-June/020595.html
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