Automatic rate limiting based on explicit network congestion notification in smart network interface card
US11336581B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2020 |
| Grant date | May 17, 2022 |
| Priority date | — |
| Expiry date | May 29, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/28
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method is provided by which a network adapter device receives a packet sent over a network from a peer, the packet including an enqueue timestamp indicating when the packet has been enqueued at the network adapter device. The network adapter device parses a header of the packet to detect whether the header includes bits indicating that the peer device is experiencing congestion, and obtains packet metadata of the packet and the enqueue timestamp of the packet. The network adapter device compares the packet metadata with information in a flow table to identify an entry in the flow table corresponding to a flow to which the packet metadata matches. The network adapter device sets a timer associated with the flow, the timer for use in scheduling transmission of a next packet provided by the host to be sent to the peer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.