On Monday, 01/14/2008 at 06:25 EST, "Bjoern A. Zeeb"
<[EMAIL PROTECTED]> wrote:
> > Because a host requires 3 devices (subchannels) to connect to a
> > HiperSocket, ...
>
> Why does it need 3 SCs, as in what is the third for?
It uses one subchannel to receive commands from the host ("write
control"), one to send command responses and async notifications to the
host ("read control"), and one or more subchannels to transfer data.
> Is there some (low level) documentation on this?
Other than what you might find in the Linux QDIO device driver source
code, no, there is no published documentation.
Alan Altmark
z/VM Development
IBM Endicott
