On Mon, 2005-01-17 at 18:37, Christian Bornträger wrote:
> I am trying a small simplification here:
> Each physical network adapter offers hundreds of device addresses. You need
> 3 of them to have one logical network adapter(read,write,data).
the "card" concept is what you call network adapter, correct?
I take it that read and write are control channels and data is where the
skb comes through?
> S/390 has
> hardware supported virtualization. Therefore can then use the hypervisor
> (LPAR or z/VM) to give specific LPARs or VM guests exactly 3 device
> addresses out of these hundreds.
Can you provision multiple of these cards per VM? if yes, is there some
ID that will break it down to OSInstance:cardid?
> The qeth driver has to register the IP address at the logical network card
> (using 3 device addresses) Afterwards the physical network card knows which
> packet belongs to which device numbers.
I think i understood but confused: before you attach IP address though,
you cant receive packets? Is there a concept of MAC address which you
can pass to the hypervisor or can you run in promiscmous mode?
Another question: When that driver runs for the physical card - it runs
in the context of a specific VM, correct? In other words it would be
impossible to see the "card" of another instance?