Hi, On 08/06/2014 01:29 PM, Alon Levy wrote: > 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/ ? That sounds abour right (I did not take a look) > Or if that is a bad starting point, which one is? > ehci-hcd.c / ohci-hcd.c / other? (looking at kernel/drivers/usb/host) The link you gave sounds right, and a better start then one of the existing drivers for real hardware, but I did not actually look at it, sorry -ENOTIME. Regards, Hans _______________________________________________ Spice-devel mailing list Spice-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/spice-devel