Differentiating Blade Destination and Traffic Types in a Multi-Root PCIe Environment

A computer program product comprising a computer recordable medium having a computer readable program recorded thereon, wherein the computer readable program, when executed on a data processing system, causes the data processing system to:

• generate a first mapping data structure that, for each single-root virtual hierarchy in the data processing system, associates each traffic class in a plurality of traffic classes with a corresponding virtual channel in a plurality of virtual channels;
• generate a second mapping data structure that maps each virtual channel in the plurality of virtual channels to a corresponding virtual link in a plurality of virtual links of the data processing system;
• and
• route traffic of a particular priority group from a single-root virtual hierarchy to a particular virtual link in the plurality of the virtual links based on the first mapping data structure and second mapping data structure, wherein each combination of virtual hierarchy and virtual channel is mapped to a different virtual link in the plurality of virtual links.

A data processing system, comprising:

• a hardware management console;
• and
• a host system coupled to the hardware management console, wherein the hardware management console:
• generates a first mapping data structure that, for each single-root virtual hierarchy in the data processing system, associates each traffic class in a plurality of traffic classes with a corresponding virtual channel in a plurality of virtual channels;
• generates a second mapping data structure that maps each virtual channel in the plurality of virtual channels to a corresponding virtual link in a plurality of virtual links of the data processing system;
• and
• routes traffic of a particular priority group from a single-root virtual hierarchy to a particular virtual link in the plurality of the virtual links based on the first mapping data structure and second mapping data structure, wherein each combination of virtual hierarchy and virtual channel is mapped to a different virtual link in the plurality of virtual links.