Using a PCI standard hot plug controller to modify the hierarchy of a distributed switch
US8949499B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2012 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | Jul 30, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The standard hot-plug controller (SHPC) specification may be used to generate PCI messages in a distributed switch to disconnect and/or connect virtual hierarchies of an endpoint from hosts that are connected based on multi-root input/output virtualization (MR-IOV). A management controller may instruct a SHPC to generate a PCI packet that specifies a particular virtual hierarchy to disconnect from a particular host. An upstream port connected to the host and the SHPC receives the PCI packet and uses a header that identifies the virtual endpoint in the packet to index into a routing table to identify a downstream port in the distributed switch that is connected to the endpoint. Once the PCI packet traverses the switch and arrives at the downstream port, the downstream port changes routing logic which logically disconnects the host from the specified virtual hierarchy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.