Using a PCI standard hot plug controller to modify the hierarchy of a distributed switch

Patent metadata

Field	Value
Publication number	US-8949499-B2
Application number	US-201213528192-A
Country	US
Kind code	B2
Filing date	Jun 20, 2012
Priority date	Jun 24, 2010
Publication date	Feb 3, 2015
Grant date	Feb 3, 2015

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.

First claim

What is claimed is:

1. A computer program product, comprising:
a computer-readable storage medium having computer-readable program code embodied therewith, the computer-readable program code comprising computer-readable program code configured to:
receive a PCI packet from a hot-plug controller, the PCI packet requesting that a target device be disconnected from an origin compute element;
identify, based on location data in the PCI packet and a routing table, an address of a fi…

Assignees

• Freking Ronald E
• Mcglone Elizabeth A
• Spach Daniel R
• Wollbrink Curtis C
• IBM

Inventors

• Freking Ronald E
• Mcglone Elizabeth A
• Spach Daniel R
• Wollbrink Curtis C

Classifications

• G06F13/4081 Primary

  Physics · mapped topic

• G06F13/20

  Physics · mapped topic