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

Michael S. Tsirkin mst at mellanox.co.il
Mon Feb 27 11:42:15 PST 2006


Quoting r. Sean Hefty <mshefty at ichips.intel.com>:
> >Okay. But, note this affects ACKs as well as ABORTs (with multi-packet
> >requests):
> >
> >Host A sends an RMPP request message to host B with TID=3
> >Host B sends an RMPP request message to host A with TID=3.
> >Now if A generates an RMPP response it has TID=3.
> >
> >If B sends ACK, host A has no idea which transaction is being ACKed.
> 
> Bah... can we distinguish which transaction is being ACKed by the response 
> bit?

Are you talking about checking IB_MGMT_METHOD_RESP?

How is this different from what I proposed?
Wont this work for Abort/Stop as well?

-- 
Michael S. Tsirkin
Staff Engineer, Mellanox Technologies



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