VIRTUAL INPUT-OUTPUT CONNECTIONS FOR MACHINE VIRTUALIZATION

• US 20100169880A1
• Filed: 12/25/2008
• Published: 07/01/2010
• Est. Priority Date: 12/25/2008
• Status: Active Grant

• Current Assignee: Mellanox Technologies Limited (NVIDIA Corporation)
• Original Assignee: Voltaire Limited (NVIDIA Corporation)
• Inventors: Berlovitch, Albert, Haviv, Yaron
• Granted Patent: US 8,201,168 B2
• Time in Patent Office: Days
• US Class Current: 718/1
• CPC Class Codes: H04L 12/4625 Single bridge functionality, e.g. connection of two networks over a single bridge
• CPC Class Codes: H04L 12/4641 Virtual LANs, VLANs, e.g. virtual private networks [VPN] LAN interconnection over a bridge based backbone H04L12/462; encapsulation techniques H04L12/4633; routing of packets H04L45/00; packet switches H04L49/00; virtual private networks for security H04L63/0272
• CPC Class Codes: H04L 49/70 Virtual switches
• CPC Class Codes: H04L 63/101 Access control lists [ACL]

Abstract

A computing method includes specifying a virtual computer system including at least one virtual or physical compute node, which produces data packets having respective source attributes. At least one Virtual Input-Output Connection (VIOC) that is uniquely associated with the values of the source attributes is defined. A policy specifying an operation to be performed with regard to the VIOC is defined. The virtual computer system is implemented on a physical computer system, which includes at least one physical packet switching element. The physical packet switching element is configured to identify the data packets whose source attributes have the values that are associated with the VIOC and to perform the operation on the identified data packets, so as to enforce the policy on the VIOC.

Claims

1. A computing method, comprising:

specifying a virtual computer system comprising at least one virtual or physical compute node, which produces data packets having respective source attributes;

defining at least one Virtual Input-Output Connection (VIOC) that is uniquely associated with the values of the source attributes;

defining a policy specifying an operation to be performed with regard to the VIOC;

implementing the virtual computer system on a physical computer system that includes at least one physical packet switching element; and

configuring the physical packet switching element to identify the data packets whose source attributes have the values that are associated with the VIOC and to perform the operation on the identified data packets, so as to enforce the policy on the VIOC.

2. The method according to claim 1, wherein specifying the virtual computing system comprises specifying a Virtual Network Interface Card (VNIC) for the compute node, and wherein defining the VIOC comprises associating the VIOC with the VNIC.

3. The method according to claim 1, wherein the source attributes comprise at least one attribute type selected from a group of types consisting of a source Media Access Control (MAC) address, a source Virtual Local Area Network (VLAN), a priority level and a source Internet Protocol (IP) address.

4. The method according to claim 1, wherein configuring the physical packet switching element comprises producing a definition, having a format that is recognizable by the physical packet switching element, of the values of the source attributes that are associated with the VIOC, and configuring the physical packet switching element using the definition.

5. The method according to claim 4, wherein the definition comprises an Access Control List (ACL).

6. The method according to claim 1, wherein configuring the physical packet switching element comprises detecting a change in one of the physical computer system and the virtual computer system, and re-configuring the physical packet switching element responsively to the detected change, so as to cause the physical packet switching element to continue enforcing the policy.

7. The method according to claim 6, wherein the at least one physical packet switching element comprises first and second physical packet switching elements, wherein configuring the physical packet switching element comprises initially configuring the first physical packet switching element to enforce the policy, and wherein re-configuring the physical packet switching element comprises, responsively to detecting the change, configuring the second physical packet switching element to enforce the policy.

8. The method according to claim 1, wherein the physical computer system comprises at least one physical computer comprising multiple physical ports, and wherein defining the VIOC comprises aggregating the multiple physical ports and associating the VIOC with the multiple aggregated physical ports.

9. The method according to claim 1, wherein the policy specifies access privileges with regard to the data packets that are associated with the VIOC.

10. The method according to claim 1, wherein the policy defines a Virtual Local Area Network (VLAN) for exchanging the data packets that are associated with the VIOC.

11. The method according to claim 1, wherein the policy defines an encryption operation to be applied with regard to the VIOC.

12. The method according to claim 1, wherein the policy defines an authentication operation to be applied with regard to the VIOC.

13. The method according to claim 1, wherein the policy defines a Quality-of-Service (QoS) property of the VIOC.

14. The method according to claim 1, wherein the policy requests monitoring of information related to the VIOC.

15. The method according to claim 1, wherein the policy defines a mirroring operation to be performed with regard to the VIOC.

16. The method according to claim 1, wherein the policy requests one of an activation and a deactivation of the VIOC.

17. The method according to claim 1, wherein defining the at least one VIOC comprises defining multiple VIOCs and grouping the multiple VIOCs to form a VIOC cluster, wherein defining the policy comprises defining a cluster policy to be applied to the multiple VIOCs in the VIOC cluster, and wherein configuring the physical packet switching element comprises configuring the physical packet switching element to apply the cluster policy to the data packets that are associated with any of the VIOCs in the VIOC cluster.

18. A computing apparatus, comprising:

an interface, which is operative to communicate with a physical computer system that includes at least one physical packet switching element; and

a processor, which is coupled to accept a specification of a virtual computer system comprising at least one virtual or physical compute node, which produces data packets having respective source attributes, to accept a definition of at least one Virtual Input-Output Connection (VIOC) that is uniquely associated with the values of the source attributes, to accept a policy specifying an operation to be performed with regard to the VIOC, to implement the virtual computer system on the physical computer system, and to configure the physical packet switching element to identify the data packets whose source attributes have the values that are associated with the VIOC and to perform the operation on the identified data packets, so as to enforce the policy on the VIOC.

19. The apparatus according to claim 18, wherein the specification of the virtual computing system specifies a Virtual Network Interface Card (VNIC) for the compute node, and wherein the processor is coupled to associate the VIOC with the VNIC.

20. The apparatus according to claim 18, wherein the source attributes comprise at least one attribute type selected from a group of types consisting of a source Media Access Control (MAC) address, a source Virtual Local Area Network (VLAN), a priority level and a source Internet Protocol (IP) address.

21. The apparatus according to claim 18, wherein the processor is coupled to produce a definition, having a format that is recognizable by the physical packet switching element, of the values of the source attributes that are associated with the VIOC, and to configure the physical packet switching element using the definition.

22. The apparatus according to claim 21, wherein the definition comprises an Access Control List (ACL).

23. The apparatus according to claim 18, wherein the processor is coupled to detect a change in one of the physical computer system and the virtual computer system, and to re-configure the physical packet switching element responsively to the detected change so as to cause the physical packet switching element to continue enforcing the policy.

24. The apparatus according to claim 23, wherein the at least one physical packet switching element comprises first and second physical packet switching elements, and wherein the processor is coupled to initially configure the first physical packet switching element to enforce the policy, and, responsively to detecting the change, to configure the second physical packet switching element to enforce the policy.

25. The apparatus according to claim 18, wherein the physical computer system comprises at least one physical compute node comprising multiple physical ports, and wherein the definition of the VIOC aggregates the multiple physical ports and associates the VIOC with the multiple aggregated physical ports.

26. The apparatus according to claim 18, wherein the policy specifies access privileges with regard to the data packets that are associated with the VIOC.

27. The apparatus according to claim 18, wherein the policy defines a Virtual Local Area Network (VLAN) for exchanging the data packets that are associated with the VIOC.

28. The apparatus according to claim 18, wherein the policy defines an encryption operation to be applied with regard to the VIOC.

29. The apparatus according to claim 18, wherein the policy defines an authentication operation to be applied with regard to the VIOC.

30. The apparatus according to claim 18, wherein the policy defines a Quality-of-Service (QoS) property of the VIOC.

31. The apparatus according to claim 18, wherein the policy requests monitoring of information related to the VIOC.

32. The apparatus according to claim 18, wherein the policy defines a mirroring operation to be performed with regard to the VIOC.

33. The apparatus according to claim 18, wherein the policy requests one of an activation and a deactivation of the VIOC.

34. The apparatus according to claim 18, wherein the definition of the at least one VIOC defines multiple VIOCs and groups the multiple VIOCs to form a VIOC cluster, wherein the policy comprises a cluster policy to be applied to the multiple VIOCs in the VIOC cluster, and wherein the processor is coupled to configure the physical packet switching element to apply the cluster policy to the data packets that are associated with any of the VIOCs in the VIOC cluster.

35. A computer software product, comprising a computer-readable medium in which program instructions are stored, which instructions, when read by a processor, cause the processor to communicate with a physical computer system that includes at least one physical packet switching element, to accept a specification of a virtual computer system comprising at least one virtual or physical compute node, which produces data packets having respective source attributes, to accept a definition of at least one Virtual Input-Output Connection (VIOC) that is uniquely associated with the values of the source attributes, to accept a policy specifying an operation to be performed with regard to the VIOC, to implement the virtual computer system on the physical computer system, and to configure the physical packet switching element to identify the data packets whose source attributes have the values that are associated with the VIOC and to perform the operation on the identified data packets, so as to enforce the policy on the VIOC.