MS-SMBD and RDMA/Infiniband ...

Stefan (metze) Metzmacher metze at
Tue Feb 28 21:11:14 MST 2012

Hi Richard,

>>> What is the status of the SMB 2.2 implementation? Will I have to
>>> implement enough of that first?
>> I think the core SMB-Direct can be implement without any SMB2 reference.
> I thought that at first, but then I saw this in the recent update to
> the SMB2 spec:
> ReadChannelInfoOffset (2 bytes): For the SMB 2.002 and 2.1 dialects,
> this field MUST NOT
> be used and MUST be reserved. The client MUST set this field to 0, and
> the server MUST
> ignore it on receipt. For the SMB 2.2 dialect, it contains the offset,
> in bytes, from the
> beginning of the SMB2 header to the channel data as specified by the
> Channel field of the
> request.

That's at the SMB2 layer, but it's optional to use the fast path via
direct memory placement.

We need the basics first:-)


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