Intel EP80579 Benutzerhandbuch

Intel

®

 EP80579 Software for Security Applications on Intel

®

 QuickAssist Technology

August 2009

PG

Order Number: 320183-004US

67

Stop must be called prior to execution of the shutdown command. Once the 

Cryptographic API module is shutdown, it will no longer respond to session creation of 

perform operation requests. It will process all requests/responses still in flight. The API 

is invoked by the ASD module:

icp_AsdCfgLacStop()

Shutdown is performed only in accordance with the following:

a. If there is an outstanding session, shutdown will be aborted.
b. If Stop has not been invoked and returned successfully, shutdown will be 

aborted.

c. Otherwise shutdown will complete.

It is the responsibility of ASD to invoke the shutdown command on the Cryptographic 

API module.

icp_AsdCfgLacShutdown()

The following sections detail the basic steps involved in performing operations using the 

Cryptographic API. Sample code and procedures are supplied for a subset of 

operations, see 

 for details.

1. Asynchronous: A callback will be invoked upon completion of the operation
2. Synchronous: The operation perform function will return

Freeing Memory: For Asychronous mode, user allocated memory may be freed once the 

callback is called. For Sychronous mode, user allocated memory may be freed once the 

Operation Perform API returns.

A symmetric operation typically has the following cycle: session initialization, perform 

one or more operations and session removal when finished.

1. Define a symmetric callback function as per the API prototype, see the API manual. 

If synchronous operation is preferred, instead simply pass NULL to the API for the 

callback parameter.

2. Allocate memory for the session

a. Session setup data
b. Session context

— Call session context get size API to get the size