[ofa-general] TransactionID(IB_MAD_TRID_F) description

Sean Hefty mshefty at ichips.intel.com
Fri Jul 27 09:15:20 PDT 2007


> I have just observed that TransactionID that I am providing with sndbuf 
> to *umad_send* is not the one that I received back from *umad_recv* 
> function. Going more in detail I have seen that only low 32 bits of TID 
> are matching in received mad with send mad. Is this functionality of TID 
> is expected or there is any suitable way to get the all 64 bits of TID 
> in place of low 32 bits only.

This is the correct behavior.  The user only has control over the lower 
32-bits of the TID.  The upper 32-bits are reserved by the MAD layer for 
multiplexing purposes.

- Sean



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