usb-can device

Hello,

I am developing a usb to can adapter.

Does there exist a standard usb-can interface on the linux side? Or will
I have to create my own device driver?

In the linux kernel source I see drivers/net/can/ems_usb.c which seems
to provide a way to add support for multiple devices through the
ems_usb_table. What would it take to get my vendor id and product id
into this list (assuming that the device is working with this driver).

I haven't studied the driver in great detail, so i don't know if it is
appropriate for what I am trying to do...

What are my options for getting a usb device, that exposes two can
nodes, supported under linux? I have complete access to the usb device,
so it would not be a problem for me to build a firmware that behaves a
certain standard way.

Respectfully,
Max S.