Packet format for a distributed system
US7639701B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2001 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Jun 3, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2001/0096
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method is provided for transmitting a packet including information describing a bus transaction to be executed at a remote device. A bus transaction is detected on a first bus and a network packet is generated for transmission over a network. The network packet includes an opcode describing the type of bus transaction. One or more control signals of the bus transaction map directly to one or more bits of the opcode to simplify decoding or converting of the bus transaction to the opcode. The packet is transmitted to a remote device and the bus transaction is then replayed at a second bus. In addition, the packet includes a data field having a size that is a multiple of a cache line size. The packet includes separate CRCs for the data and header. The packet also includes a transaction ID to support split transactions over the network. Also, fields in the packet header are provided in a particular order to improve switching efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.