State recovery and failover of intelligent network adapters

Details State recovery and failover of intelligent network adapters State recovery and failover of intelligent network adapters

2006-09-26

2006-09-26

Beausoliel, Robert (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S004110, C714S015000, C370S220000

Reexamination Certificate

active

07114096

ABSTRACT:
The present invention provides a method, computer program product, and data processing system for efficiently recovering state and performing failover of a network offload engine. The present invention distinguishes between the hard state and the soft state of a protocol. Hard state is state information that, when lost, leads to incorrect protocol behavior. Soft state is state information that may be lost or become inconsistent without loss of correctness. The present invention ensures correctness by always being able to recover the hard state of the protocol. A preferred embodiment of the present invention performs a failover of a network offload engine by temporarily blocking the reception of network packets, recovering hard state from host information, resuming network operation using a substitute network offload engine, and recovering soft state from the subsequent network activity.

REFERENCES:
patent: 5295258 (1994-03-01), Jewett et al.
patent: 5774640 (1998-06-01), Kurio
patent: 5941958 (1999-08-01), Hwangbo
patent: 6034962 (2000-03-01), Ohno et al.
patent: 6052733 (2000-04-01), Mahalingam et al.
patent: 6105151 (2000-08-01), Mahalingam et al.
patent: 6134678 (2000-10-01), Mahalingam et al.
patent: 6253334 (2001-06-01), Amdahl et al.
patent: 6311288 (2001-10-01), Heeren et al.
patent: 6314525 (2001-11-01), Mahalingham et al.
patent: 6721806 (2004-04-01), Boyd et al.
patent: 6763479 (2004-07-01), Hebert
patent: 2003/0046330 (2003-03-01), Hayes
patent: 2003/0084371 (2003-05-01), Mongazon-Cazavet et al.
patent: 2003/0218982 (2003-11-01), Folkes et al.
patent: 2004/0042395 (2004-03-01), Lu et al.
patent: 2004/0062267 (2004-04-01), Minami et al.
patent: 2004/0078619 (2004-04-01), Vasavada

Affiliated with

Also associated with

Rating

State recovery and failover of intelligent network adapters does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with State recovery and failover of intelligent network adapters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and State recovery and failover of intelligent network adapters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3585788