Cyborg Intel® QAT Driver Proposal

This spec proposes to provide the initial design for Cyborg’s Intel® QAT driver.

Problem description

Intel® QuickAssist Technology(Intel® QAT) provides security(encryption) HW acceleration and compression HW acceleration. It improves performance across applications and platforms. That includes symmetric encryption and authentication, asymmetric encryption, digital signatures, RSA, DH, and ECC, and lossless data compression. Hence, using Intel® QAT for application acceleration in cloud has been becoming desirable.

Intel® QAT card also support SRIOV 1, which means admin can virtualize it into serveral VFs and assign VFs to the VM. One Intel® QAT Card usually has 3 or 6 PFs which correspond to “Device” notion in Cyborg, and each of them can be virtualize into 8 or 16 VFs. It depends on diffirent devices.

This spec will add a Intel® QAT driver for Cyborg to manage specific Intel® QAT devices.

Use Cases

  • When user want to boot up a VM with Intel® QAT card (PF or VF) attached in order to accelerate TLS workload. Cyborg should be able to manage this kind of acceleration resources and to assign it to the VM(binding).

Proposed changes

In general, the goal is to develop a Cyborg Intel® QAT driver that supports discover() interfaces, this driver is reponsible to encapsule the device information to Cyborg’s unified data model, such as Device, Deployale, AttachHandle and so on.

The driver should include discover functions which will be called by agent periodically.

Image Format

Alternatives

None

Data model impact

None

REST API impact

None

Security impact

None

Notifications impact

None

Other end user impact

None

Performance Impact

None

Other deployer impact

Deployers should install the specific Intel® QAT software package that the driver depends on.

Please see ref 2 for details.

Developer impact

None

Implementation

Assignee(s)

Primary assignee:

Xinran Wang

Work Items

  • Implement Intel® QAT driver in Cyborg

  • Add related test cases.

Dependencies

None

Testing

  • Unit tests will be added to test this driver.

Documentation Impact

Document Intel® QAT driver in Cyborg project.

History

Revisions

Release

Description

Victoria

Introduced