Efficient parsing of extended packet headers
US10757230B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2017 |
| Grant date | Aug 25, 2020 |
| Priority date | — |
| Expiry date | Dec 20, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Communication apparatus includes multiple interfaces configured to be connected to a network so as to receive and transmit data packets having respective packet headers, which can include sub-headers of different, respective types. A memory stores instructions for parsing each type of sub-headers and a transition table, which indicates, for each of the types, a location of the instructions for parsing a subsequent sub-header depending upon the type of the subsequent sub-header. A plurality of predefined types are represented in the transition table by a common alias. Routing logic parses the first sub-header in a packet, reads the type of the second sub-header from the first sub-header, and accesses the transition table using the common alias in place of the type of the first sub-header so as to locate and read the instructions for parsing the second sub-header.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.