[openib-general] [PATCH] [CM] CM DREQ's need the redirected qpn

John Kingman kingman at austin.rr.com
Wed Sep 21 15:24:51 PDT 2005


On Wed, 21 Sep 2005, Sean Hefty wrote:

> John Kingman wrote:
>> > The remote QPN in the DREQ is supposed to be the QPN of the connection,
>> > and not
>> > the CM's QP.  I think that the original code is correct.
>> 
>> Am I misreading o12-8?
>
> The DREQ field "Remote QPN/EECN" is defined in 12.7.37.  It indicates the QP
> that is being disconnected.  o12.8 just says that the CM shall support
> responding to DREQ messages.
>
> My take is that the DREQ will be sent to the redirected QP, but that value in
> the DREQ message itself is the QPN of the connection.

You're right, of course.  I thought my change had fixed a problem, but when I 
backed it out, the problem didn't recur.  The problem must have been fixed on 
the target side at about the same time.

So, as Gilda Radner used to say ... "Nevermind."

Thanks,

John



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