Differentiating blade destination and traffic types in a multi-root PCIe environment
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United States of America Patent
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Mar 27, 2012
Grant Date -
Jul 1, 2010
app pub date -
Dec 30, 2008
filing date -
Dec 30, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Mechanisms for differentiating traffic types per host system blade in a multi-root PCI Express environment are provided. The mechanisms generate a first mapping data structure that, for each single-root virtual hierarchy in the multi-root data processing system, associates a plurality of traffic classes with a plurality of priority groups and maps each traffic class in the plurality of traffic classes to a corresponding virtual channel in a plurality of virtual channels. Moreover, a second mapping data structure is generated that maps each virtual channel in the plurality of virtual channels to corresponding per host system blade virtual links in a plurality of virtual links of the multi-root data processing system. Traffic of a particular priority group is routed 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.
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