Network interface card transmission control protocol acceleration offload failure detection and recovery mechanism
US7715321B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2007 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Jul 4, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A computer implemented method and data processing system for the detection and recovery of a network interface card TCP acceleration offload failure. Responsive to a failure to receive an acknowledgement of a transmission control protocol segment containing a request for a transmission control protocol offload function in a network interface card, the transmission control protocol segment is retransmitted without the request for a transmission control protocol offload function. When an acknowledgement of the retransmitted transmission control protocol segment without the request for a transmission control protocol offload function is received, a counter is incremented which indicates a failure of the transmission control protocol offload function. Responsive to the counter exceeding a predefined number of allowed failures, all requests to the transmission control protocol offload function for the network interface card are stopped.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.