Reordering PCP flows as they are assigned to virtual channels
US9270488B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 2014 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Aug 13, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/25
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A Network Flow Processor (NFP) integrated circuit receives, via each of a plurality of physical MAC ports, PCP (Priority Code Point) flows. The NFP also maintains, for each of a plurality of virtual channels, a linked list of buffers. There is one port enqueue engine for each physical MAC port. For each PCP flow received via the physical MAC port associated with a port enqueue engine, the engine causes frame data of the flow to be loaded into one particular linked list of buffers. Each engine has a lookup table circuit that is configurable so that the relative priorities of the PCP flows are reordered as the PCP flows are assigned to virtual channels. A PCP flow with a higher PCP value can be assigned to a lower priority virtual channel, whereas a PCP flow with a lower PCP value can be assigned to a higher priority virtual channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.