Addresses assignment for adaptor interfaces

• US 7,502,865 B2
• Filed: 12/18/2003
• Issued: 03/10/2009
• Est. Priority Date: 12/18/2003
• Status: Expired due to Fees

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Seto, Pak-Lung
• Primary Examiner(s): Flynn; Nathan J
• Assistant Examiner(s): WASEL, MOHAMED A
• Application Number:
  US10/742,302
• Publication Number:
  US 20050138202A1
• Time in Patent Office: 1,909 Days
• Field of Search: 709/238, 709/245, 709/250
• US Class Current: 709/238
• CPC Class Codes: H04L 61/00 Network arrangements, protocols or services for addressing or naming
• CPC Class Codes: H04L 61/5038 for local use, e.g. in LAN or USB networks, or in a controller area network [CAN]
• CPC Class Codes: H04L 69/32 Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
• CPC Class Codes: H04L 69/326 in the transport layer [OSI layer 4] H04L69/16 takes precedence
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

Provided are a method, system, and article of manufacture for assigning addresses for adaptor interfaces. An initial configuration assigning multiple local interfaces to one initial local address is maintained. For each local interface, a remote address of a remote interface on at least one remote device to which the local interface connects is received. The initial local address is used to identify the local interfaces assigned to the initial local address in response to receiving a same remote address for each remote interface connected to the local interfaces assigned the initial local address.

Claims

1. A method, comprising:

maintaining an initial configuration by assigning multiple local interfaces to one initial local port address of a port to which the local interfaces are assigned as part of the initial configuration;

for each local interface, receiving a remote address of a remote interface on at least one remote device to which the local interface connects;

using the initial local port address to identify the local interfaces assigned to the initial local port address in response to receiving a same remote address for each remote interface connected to the local interfaces assigned the initial local port address;

generating at least one identifier in response to receiving multiple remote addresses from the remote interfaces connected to the local interfaces; and

assigning different identifiers to the local interfaces previously assigned the initial local port address in response to generating the at least one identifier.

2. The method of claim 1, wherein each generated identifier comprises an additional port address, further comprising:

configuring an additional port in the device for each generated additional port address; and

assigning local interfaces to the ports, including the additional port and port having the initial local port address.

3. The method of claim 2, wherein the local interfaces assigned to one port connect to remote interfaces having a same remote address.

4. The method of claim 1, wherein the at least one received remote address is received as part of an identification sequence, further comprising:

transmitting the initial local port address to the remote interfaces connected to the local interfaces.

5. The method of claim 4, wherein the identifiers assigned to the local interfaces, including the at least one generated identifier, comprise local port addresses, further comprising:

initiating an additional identification sequence in response to generating the at least one local port address; and

transmitting the local port addresses identifying the local interfaces to the connected remote interfaces in response to the additional identification sequence.

6. The method of claim 1, wherein the at least one remote device and a local device including the local interfaces implement the SAS architecture, wherein the local and remote addresses comprise SAS addresses, and wherein the local and remote interfaces comprise PHYs.

7. The method of claim 1, wherein the remote interfaces having different remote addresses are on different remote devices.

8. The method of claim 1, wherein generating the at least one identifier comprises generating a different identifier for each received different remote address, wherein a combination of the identifiers and the initial local port address are used to identify the local interfaces assigned.

9. The method of claim 8, wherein the plurality of identifiers comprise domains, wherein the local interfaces remain assigned to the port having the initial local port address.

10. The method of claim 8, wherein the remote interfaces having different remote addresses are on different remote devices, wherein the combination of each of the plurality of identifiers and the default local port address identify the local interfaces within a local device and wherein the initial local port address identifies the local interfaces within the remote devices.

11. The method of claim 8, wherein the plurality of identifiers comprise domains, further comprising:

for each received remote address, generating a different domain in a local device including the local interfaces connected to the remote interfaces having the remote addresses.

12. The method of claim 11, wherein the generated domains include one domain in the initial configuration.

13. A device in communication with a plurality of remote interfaces on at least one remote device, comprising:

a plurality of local interfaces;

an initial configuration assigning multiple local interfaces to one initial local port address of a port to which the local interfaces are assigned as part of the initial configuration;

circuitry capable of causing operations, the operations comprising;

for each local interface, receiving a remote address of one remote interface to which the local interface connects;

using the initial local port address to identify the local interfaces assigned to the initial local port address in response to receiving a same remote address for each remote interface connected to the local interfaces assigned the initial local port address;

generating at least one identifier in response to receiving multiple remote addresses from the remote interfaces connected to the local interfaces; and

assigning different identifiers to the local interfaces previously assigned the initial local port address in response to generating the at least one identifier.

14. The device of claim 13, wherein each generated identifier comprises an additional port address, and wherein the operations further comprise:

configuring an additional port in the device for each generated additional port address; and

assigning local interfaces to the ports, including the additional port and port having the initial local port address.

15. The device of claim 14, wherein the local interfaces assigned to one port connect to remote interfaces having a same remote address.

16. The device of claim 13, wherein the at least one received remote address is received as part of an identification sequence, wherein the operations further comprise:

transmitting the initial local port address to the remote interfaces connected to the local interfaces.

17. The device of claim 13, wherein the identifiers assigned to the local interfaces, including the at least one generated identifier, comprise local port addresses, wherein the operations further comprise:

initiating an additional identification sequence in response to generating the at least one local port address; and

transmitting the local port addresses identifying the local interfaces to the connected remote interfaces in response to the additional identification sequence.

18. The device of claim 13, wherein the at least one remote device and the device implement the SAS architecture, wherein the local and remote addresses comprise SAS addresses, and wherein the local and remote interfaces comprise PHYs.

19. The device of claim 13, wherein the remote interfaces having different remote addresses are on different remote devices.

20. The device of claim 13, wherein generating the at least one identifier comprises generating a different identifier for each received different remote address, wherein a combination of the identifiers and the initial local port address are used to identify the local interfaces assigned.

21. The device of claim 20, wherein the plurality of identifiers comprise domains, wherein the local interfaces remain assigned to the port having the initial local port address.

22. The device of claim 20, wherein the remote interfaces having different remote addresses are on different remote devices, wherein the combination of each of the plurality of identifiers and the default local port address identify the local interfaces within the local device and wherein the initial local port address identifies the local interfaces within the remote devices.

23. The device of claim 20, wherein the plurality of identifiers comprise domains, wherein the operations further comprise:

for each received remote address, generating a different domain in the local device including the local interfaces connected to the remote interfaces having the remote addresses.

24. The device of claim 23, wherein the generated domains includes one domain in the initial configuration.

25. A system in communication with at least one remote device having a plurality of remote interfaces, comprising:

a circuit board;

an adaptor coupled to the circuit board, comprising;

a plurality of local interfaces;

an initial configuration assigning multiple local interfaces to one initial local port address of a port to which the local interfaces are assigned as part of the initial configuration;

circuitry capable of causing operations to be performed, the operations comprising;

for each local interface, receiving a remote address of one remote interface to which the local interface connects;

using the initial local port address to identify the local interfaces assigned to the initial local port address in response to receiving a same remote address for each remote interface connected to the local interfaces assigned the initial local port address;

generating at least one identifier in response to receiving multiple remote addresses from the remote interfaces connected to the local interfaces; and

assigning different identifiers to the local interfaces previously assigned the initial local port address in response to generating the at least one identifier.

26. An article of manufacture comprising at least one of a hardware device having hardware logic and a computer readable storage medium having computer executable code for interfacing local interfaces in a local device with connected remote interfaces in at least one remote device, wherein the article of manufacture causes operations to be performed, the operations comprising:

maintaining an initial configuration assigning multiple local interfaces to one initial local port address of a port to which the local interfaces are assigned as part of the initial configuration;

for each local interface, receiving a remote address of one remote interface to which the local interface connects;

using the initial local port address to identify the local interfaces assigned to the initial local port address in response to receiving a same remote address for each remote interface connected to the local interfaces assigned the initial local port address;

generating at least one identifier in response to receiving multiple remote addresses from the remote interfaces connected to the local interfaces; and

assigning different identifiers to the local interfaces previously assigned the initial local port address in response to generating the at least one identifier.

27. The article of manufacture of claim 26, wherein each generated identifier comprises an additional local port address, wherein the operations further comprise:

configuring an additional port in the device for each generated additional local port address; and

assigning local interfaces to the ports, including the additional port and port having the initial local port address.

28. The article of manufacture of claim 26, wherein the local interfaces assigned to one port connect to remote interfaces having a same remote address.

29. The article of manufacture of claim 26, wherein the at least one received remote address is received as part of an identification sequence, wherein the operations further comprise:

transmitting the initial local port address to the remote interfaces connected to the local interfaces.

30. The article of manufacture of claim 29, wherein the identifiers assigned to the local interfaces, including the at least one generated identifier, comprise local port addresses, wherein the operations further comprise:

initiating an additional identification sequence in response to generating the at least one local port address; and

transmitting the local port addresses identifying the local interfaces to the connected remote interfaces in response to the additional identification sequence.

31. The article of manufacture of claim 26, wherein the at least one remote device and a local device including the local interfaces implement the SAS architecture, wherein the local and remote addresses comprise SAS addresses, and wherein the local and remote interfaces comprise PHYs.

32. The article of manufacture of claim 26, wherein the remote interfaces having different remote addresses are on different remote devices.

33. The article of manufacture of claim 26, wherein generating the at least one identifier comprises generating a different identifier for each received different remote address, wherein a combination of the identifiers and the initial local port address are used to identify the local interfaces assigned.

34. The article of manufacture of claim 33, wherein the plurality of identifiers comprise domains and wherein the local interfaces remain assigned to the port having the initial local port address.

35. The article of manufacture of claim 33, wherein the remote interfaces having different remote addresses are on different remote devices, wherein the combination of each of the plurality of identifiers and the default local port address identify the local interfaces within a local device and wherein the initial local port address identifies the local interfaces within the remote devices.

36. The article of manufacture of claim 33, wherein the plurality of identifiers comprise domains, wherein the operations further comprise:

for each received remote address, generating a different domain in a local device including the local interfaces connected to the remote interfaces having the remote addresses.

37. The article of manufacture of claim 36, wherein the generated domains include one domain in the initial configuration.

38. The article of manufacture of claim 26, wherein the article of manufacture stores instructions that when executed result in performance of the operations.