Add port #'s to USB Filters

[scottgus1bug]

The "port" space of the USB filter is not showing anything, making usage of USB devices with same vendorid, productid, and revision numbers, etc. difficult to sort and use.

If multiple USB devices containing different data but having identical Virtualbox USB filter information need to be reliably distributed to specific guests, the VB USB filter can't distinguish which USB device to use and sends all of them into the first guest available. Inserting another dongle into the host immediately sends the new dongle into the first guest, requiring further finagling to get the dongle into the next desired guest. Or if by chance the second guest was started first, it would not be known which of the dongles was in the guest, if not all of them at once. In either case further manual manipulation is needed after the guests are started to figure out which donlge to put in which guest.

If the port space showed which USB port the desired device was plugged into, and was filterable, then as long as the device is continually used in the same port, the VB USB filter will be able to distinguish them and filter them into the desired guests automatically.

A company called KernelPro (​http://www.kernelpro.com/usb-over-ethernet.html) has a USB-over-ethernet server program that casn differentiate USB devices with the same vendorid, productid, revision, etc. by the port number the USB device is plugged into. Please see the attached screenshot. I have five license dongles attached to this USBoE server. Notice that four of the five have the same vendorid, productid, and revision numbers, even though they contain different license data in each dongle, so they are not swappable. The server can distinguish them and send them reliably, because it keeps track by port number.

[scottgus1bug]

screenshot showing USBoE distinguishing 4 same USB dognles by port number

[scottgus1bug]

PS I do not work for and am not affiliated with KernelPro :)

[Helge Deller]

It seems starting with 5.2.20 and 6.0.0 the "USB port" filter seems to work as you describe.
See: ​https://forums.virtualbox.org/viewtopic.php?f=1&t=91651

[Helge Deller]

My previous comment isn't fully correct.
The "USB port" filter may return same "port numbers" to different physical USB ports.
On my linux box I see: (I shortened the list)

[root@p100 ~]# VBoxManage list usbhost
Port:               0
Address:            sysfs:/sys/devices/pci0000:00/0000:00:1d.2/usb4/4-1//device:/dev/vboxusb/004/002

Port:               1
Address:            sysfs:/sys/devices/pci0000:00/0000:00:1d.1/usb3/3-2//device:/dev/vboxusb/003/002

Port:               0
Address:            sysfs:/sys/devices/pci0000:00/0000:00:1d.3/usb5/5-1//device:/dev/vboxusb/005/002

Port:               1
Address:            sysfs:/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-2//device:/dev/vboxusb/002/002