RQ Logic Operation
Header Validation
Figure 17-25 on page 438 and Figure 18-1 on page 460 illustrate the process of validating the incoming packet's headers.
RQ Logic PSN Check Can Be Skipped
Since each complete message is wholly contained with a single request packet, the RQ Logic can be designed to ignore the PSN field (i.e., it does not perform a check of the PSN in each packet to make sure that it is one higher than the PSN received in the previous request packet).
Some special-purpose CA designs (e.g., media streaming), however, may check each request packet's PSN in order to detect missing packets.
Q_Key Check at Destination QP
When the request packet arrives at the destination QP, the RQ Logic compares the DETH:Q_Key value to the Q_Key ...
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