[Spice-devel] [RFC PATCH 0/1] RFC - Implement a usbredir kernel module
Jeremy White
jwhite at codeweavers.com
Tue Jun 30 14:44:09 PDT 2015
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
More information about the Spice-devel
mailing list