In SAS2r12 table 37, there are a number of events that relate to received and transmitted primitives.  Some of these e.g., code 23h Transmitted retry-class OPEN_REJECT count, and code 25h Received AIP (WAITING ON PARTIAL) count, explicitly call out whether and expander shall count forwarded versions of these primitives.  The following PHY Events do not explicitly state what expanders shall do when forwarding these primitives:

40h	Transmitted SSP frame count	WC	Number of SSP frames transmitted.
41h	Received SSP frame count	WC	Number of SSP frames received.
44h	Transmitted CREDIT_BLOCKED count	WC	Number of times the phy transmitted a CREDIT_BLOCKED.
45h	Received CREDIT_BLOCKED count	WC	Number of times the phy received a CREDIT_BLOCKED.
50h	Transmitted SATA frame count	WC	Number of STP or SATA frames transmitted.
51h	Received SATA frame count	WC	Number of STP or SATA frames received.
60h	Transmitted SMP frame count	WC	Number of SMP frames transmitted.
61h	Received SMP frame count	WC	Number of SMP frames received.

Bill Martin

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