iew of a logical environment of a processing center of the computer system of FIG. 8; andFIGS. 9A and 9B are a flowchart showing a logical routine of a system such as that of FIGS. 8 and 8A for handling control of incoming packet data.DETAILED DESCRIPTIONIn a serial, packet-switched I/O environment, such as InfiniBand.RTM., components are connected to a switching fabric, which consists of a number