US 2014/0372660 A1 · Packet Routing Based on Packet Type in Peripheral Component Interconnect Express Bus Systems

Abstract

A PCIe subsystem may be coupled to a host by a system extender adapted to perform PCIe packet routing based on packet type. A first TLP (transport layer packet) type router may receive PCIe packets, and selectively route the PCIe packets according to the type of the packet through a corresponding path of at least two alternate paths. A second TLP type router may receive the routed packet through a first path if the PCIe packet was routed through the first path, and may receive the routed packet through a second path if the routed packet was routed through the second path. A non transparent bridge may be coupled between the first TLP type router block and the second TLP type router block along the second path, while the first path may be a pass-through path from the first TLP type router block to the second TLP type router block.

Claims20

Dependent claims

A system extender comprising:

a first TLP (transport layer packet) type router block configured to receive PCIe (Peripheral Component Interconnect Express) packets, and selectively route each PCIe packet of the received PCIe packets according to a type of the PCIe packet through a corresponding path selected from at least two alternate paths;
a second TLP type router block configured to:
receive the PCIe packet through a first path of the at least two alternate paths if the PCIe packet was routed through the first path;
and
receive the PCIe packet through a second path of the at least two alternate paths if the PCIe packet was routed through the second path.

2 more elements

Dependencies are inferred from the claim text.

Packet Routing Based on Packet Type in Peripheral Component Interconnect Express Bus Systems

Life of this patent

Packet Routing Based on Packet Type in Peripheral Component Interconnect Express Bus Systems

Life of this patent

Abstract

Claims20