[openib-general] Re: [PATCH] ib_mad: prevent duplicateoutstanding MADtransactions with same TID

[Sean Hefty]

Sean Hefty wrote:
> I still need to consider this in more detail to see if there isn't some simpler
> solution that we're overlooking.

I was thinking about this more, and I'd like to make sure that we identify all 
separate issues.

Ignoring RMPP completely, I'm not convinced that we need to take any action.  A 
request will either generate a response or not.  If no response is generated, 
checking that a send is a duplicate provides very little protection.  There's 
only a small window on the send side that such a check would even work, and the 
receiving side still needs to handle this.  And if a response were generated, I 
don't see that there's any real issue.

I'd like to get some agreement on whether we really need to take any action for 
non-RMPP MADs, then consider what issues RMPP adds.

- Sean