On Wed, 29 Jun 2005, Roland Dreier wrote:
James> - IB services (both kernel and user space) will be configured using
James> IP addresses. By IB services, I'm referring to protocols that are
James> layered directly on top of the InfiniBand protocols (e.g. SDP,
James> NFS-RDMA, iSER, etc.).
James> - IB services will resolve IP addresses to IB addresses using IPoIB
James> ARP (all IB nodes would be required to support IPoIB).
James> - each IB service would place appropriate IP address information in
James> its protocol messages
That's mostly right, except that I would leave it up to the individual
protocols if and how they want to use IP addressing. For example, the
SCSI RDMA Protocol (SRP) published by INCITS T10 does not use IP
addresses in any way, and it seems that should be allowed and supported.
Thanks for the clarification. I understand your position now.
I think it is worth reiterating the two major dependencies imposed by
this solution:
- IB nodes must run IPoIB
- ULPs must add IP addressing information on IB networks
Of those two, I see the second as the most difficult. The
standardization of additional protocol messages may take a significant
amount of time.
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