Method and apparatus for detecting duplicate buffers in a descriptor based multi-port queue
US6556579B1 · kind B1 · utility
4Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1999 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Sep 21, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/90
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A main data memory is provided in a network device and includes a plurality of buffers for storing data packets. A plurality of descriptors, or pointers, point to the individual buffers. A status of the descriptors is stored in a descriptor reference memory. The status information includes whether the descriptors are in an active or free state, and an indication of copies of the descriptors in the transmit queues. A descriptor free pool includes a list of the descriptors in the free state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.