On 08/06/2014 02:02 PM, Hans de Goede wrote: > Hi, > > On 08/06/2014 08:02 AM, Alon Levy wrote: >> On 08/05/2014 10:52 PM, Jeremy White wrote: >>> While I'm researching, I thought I'd look into the next challenge for >>> XSpice - usb device redirection. >>> >>> It faces similar challenges to the CAC card stuff. That is, my sense is >>> that the usbredir library and utility set is all about reading client >>> machine USB device information and relaying it through to qemu, which >>> then exposes it as a 'real' device to the guest OS. >>> >>> Again, with XSpice, we don't have qemu :-(. >>> >>> Ideally, we'd find some mechanism to inject a usb device into the system >>> running XSpice. >>> >>> I've done some further research, and the usbip project would seem >>> useful. It was here: >>> http://usbip.sourceforge.net/ >>> but apparently is now in the kernel. >>> >>> If we use that, then the challenge would appear to be translating the >>> protocols. >>> >>> Alternates: >>> 1. Use usbip end-to-end >>> I'd like to avoid this; there are benefits to having all spice >>> traffic go over the same channel >>> 2. ??? Insight appreciated <grin> ??? >>> (I can't help but feel there are other methods for simulating a >>> USB device, but I'm fairly ignorant of this space). >>> >> >> 2. Teach usbredir to use a kernel without a vm. > > Yes that would be the rigt solution to this, there are use-cases outside > of Xspice for this too. The solution you're looking for here is to > wtite a virtual hcd device (driver) for the kernel talking the So something like http://sourceforge.net/projects/usb-vhci/ ? Or if that is a bad starting point, which one is? ehci-hcd.c / ohci-hcd.c / other? (looking at kernel/drivers/usb/host) > usbredir protocol, so basically do what the server side usbip bits > do, but then with a new protocol. > > I would advice against going for a protocol translater, your time would > better spend on doing this properly right away. > > I would certsainly be interested in testing and reviewing patches > for this and help getting them added to the upstream kernel. > > Regards, > > Hans > _______________________________________________ Spice-devel mailing list Spice-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/spice-devel