Re: SRP over RoCE

On Fri, Aug 5, 2011 at 9:17 PM, Bob Pearson
[off-list ref] wrote:

There are a couple of issues with SRP/RoCE. One of them is that the current
scheme for configuring connections is based on DM MADs. The other is the one
you mention. We (SFW) looked at both problems a couple of years ago and came
up with a version of SRP that runs over RDMACM. SRP was standardized before
RDMACM was a gleam in Sean's eye and assumes that it has the entire private
data area for CM MADs to pass parameters. But if you squeeze a little you
can get it all in after the area that RDMACM takes. We have versions of SRPI
and SRPT that can use RDMACM for connection setup. Since RDMACM supports
connection setup automatically for RoCE you're all fixed. In order to make
this commercially practical you would have to go back to NCITS and update
the SRP standard but I'm not too sure that there is enough interest to make
that happen. The other problem requires making changes to the special file
that sets up the connection. We also have this patch.

Has it been considered to add that ib_srp patch to the ib_rxe patch
series, such that Dave and Roland can have a look at it ?

Bart.
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