Direct cache access for network input/output devices
US9985977B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2017 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Jul 17, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/1052
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and systems for improving efficiency of direct cache access (DCA) are provided. According to one embodiment, a set of DCA control settings are defined by a network interface controller (NIC) of a network security device for each of multiple I/O device queues. The control settings specify portions of network packets that are to be copied to a cache of the corresponding CPU. A packet is received by the NIC. The packet is parsed to identify boundaries of portions of the packet and is queued onto an I/O device queue. The packet is then transferred from the I/O device queue to a host memory of the network security device and the specified portions are concurrently copied to the cache of the corresponding CPU based on the control setting associated with the I/O device queue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.