Hi,
On 12/02/2010 12:04 PM, Gerd Hoffmann wrote:
Hi,
But the event driven-ness is from the device driver for the
host controller pov, and usb redirection is dealing with usb
at the device level / emulating a usb device. Has much changed
(other then speed) for the way usb looks from the device pov ?
One new thing in usb3 are streams for bulk xfers
(Documentation/usb/bulk-streams.txt in the linux kernel source tree has a
summary). Also superspeed iso packets can be less than maximum size (IIRC this
isn't the case for usb2).
State transitions are a bit different. Also the address assignment: The xHCI
handles the address assignment itself whereas with uhci/ehci the guest os
handles this.
Thanks for the input. I've tried to take bulk streams into account, see the RFC
I just send to the list.
Duh, this reminds me that I should have put a stream_id field in the bulk
packer header, here is an updated
struct:
struct usb_redir_bulk_packet_header {
uint64_t pid;
uint8_t endpoint;
uint8_t status;
uint16_t data_size;
uint32_t stream_id;
}
Regards,
Hans
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