International Business Machines Corporation

Donald Jung

Jie Zheng

Jeffrey M Turner

Howard M Haynie

Frank David Ferraiolo

Yuk-Ming Ng

Joseph B Hanley, Iii

Thomas H Hillock

Jurgen Hass

John B Aylward

Don T Gottstine

A method for updating a descriptor engine for a network interface card (NIT) can include quiescing, by a processing device, a transmit stream to the NIC. The method can further include stopping, by the processing device, a descriptor engine from providing new receive descriptors to the NIC. The method can further include setting, by the processing device, a controller to redirect inbound traffic to the memory. The method can further include restoring, by the processing device, a transmit configuration and a transmit state of the descriptor engine subsequent to updating the descriptor engine.

Upgrading a descriptor engine for a network interface card

A method for updating a descriptor engine for a network interface card (NIC) may include quiescing a transmit stream to the NIC. The method may further include stopping a descriptor engine from providing new receive descriptors to the NIC. The method may further include creating a copy in a memory of any receive descriptors already available to the NIC prior to the stopping the descriptor engine. The method may further include setting a controller to redirect inbound traffic to the memory. The method may further include restoring a transmit configuration and a transmit state of the descriptor engine subsequent to updating the descriptor engine.

Examples of techniques for upgrading a descriptor engine for a network interface card (NIC) are disclosed. An example method may include: quiescing a transmit stream to the NIC; stopping a descriptor engine from providing new receive descriptors to the NIC; creating a copy in a memory of any receive descriptors already available to the NIC prior to the stopping the descriptor engine; setting a controller to redirect inbound traffic to the memory; logging a current configuration, state, and receive pointers of the descriptor engine; updating the descriptor engine; restoring a transmit configuration and a transmit state of the descriptor engine; and enabling a transmit stream of a data router such that transmit packets are created by the descriptor engine for transmission by the NIC.

A method, system, and computer program product for integrated circuit recovery testing using simulation checkpoints is provided. The method includes executing an error injection test on an integrated circuit that includes a plurality of domains and latches. The error injection test includes injecting an error into one of the domains, clock stopping the domain with the error, performing fencing between the domain with the error and the other domains, and quiescing the other domains. A checkpoint is created of a state of the integrated circuit after the clock stopping, fencing and quiescing have been completed. A mainlines test of the integrated circuit is executed. The mainline test includes applying the checkpoint to the integrated circuit, and performing a recovery reset of the stopped domain. It is determined if the mainline test executed correctly and the results of the determining are output.

Method, system, and computer program product for integrated circuit recovery testing using simulation checkpoints

A method for testing protocol converters is presented, which permits the achievement of a test of all commands, independently of a corresponding test system. A modified protocol converter itself is used for the test. With the help of this method, a test for conversion of data structures can be carried out, of a slow protocol into the corresponding data structures of a fast protocol in the original speed.

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Hopewell Junction, NY, United States of America

Donald Jung