Teledyne LeCroy SAS Sample Test Suite - Manual (Page 52)

SAS Sample Test Suite
Error Conditions – Frames Received from Initiator (Test Group C) 52
Invalid Hashed Address detection (TestC.23.1)
SSP ERROR HANDLING – Invalid Hashed Address error detection (TestC.23.1)
An invalid Source or Destination hashed address error condition could be detected. SAS
version 2.0 specifies this as a “may check” optional feature. With expanders in larger and
larger SAS networks, these fields will become more relative as the possibility of frame mis-
routing increases.
Test Procedure:
1. The Testing Station is instructed to start and complete a phy Reset sequence followed by an
Identify sequence with the DUT. Since the DUT is a target, the Testing Station is instructed
to transmit an Identify Address frame indicating that it is a SAS Initiator.
2. The Testing Station is instructed to open an SSP connection to the DUT and transmit a SCSI
WRITE command for 512 bytes (1 frame). Then, close the connection
3. Allow the DUT to open an SSP connection to the Testing Station and transmit XFER_RDY.
4. The Test Station is instructed to open an SSP connection to the DUT and transmit a DATA
frame with an invalid Source Hashed Address. Then, close the connection.
Observable Results: Verify that the DUT discards the frame. The DUT may wait for the correct data
and possibly timeout and ABORT the connection. OR, may send a vendor-specific confirmation to
the SCSI application layer to cause the command using that initiator port transfer tag to be aborted
6. The Testing Station is instructed to start and complete a phy Reset sequence followed by an
Identify sequence with the DUT. Since the DUT is a target, the Testing Station is instructed
to transmit an Identify Address frame indicating that it is a SAS Initiator.
7. The Testing Station is instructed to open an SSP connection to the DUT and transmit a SCSI
WRITE command for 512 bytes (1 frame). Then, close the connection
8. Allow the DUT to open an SSP connection to the Testing Station and transmit XFER_RDY.
9. The Test Station is instructed to open an SSP connection to the DUT and transmit a DATA
frame with an invalid Destination Hashed Address. Then, close the connection.
Observable Results: Verify that the DUT discards the frame. The DUT may wait for the correct data
and possibly timeout and ABORT the connection. OR, may send a vendor-specific confirmation to
the SCSI application layer to cause the command using that initiator port transfer tag to be aborted