Method and system for processing a network packet

• US 7,983,265 B1
• Filed: 01/17/2008
• Issued: 07/19/2011
• Est. Priority Date: 01/17/2008
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: QLogic Corporation (Marvell Technology Group Limited)
• Inventors: Dropps, Frank R.
• Primary Examiner(s): Rose; Kerri M
• Application Number:
  US12/016,042
• Time in Patent Office: 1,279 Days
• Field of Search: 370/252, 370/389, 370/390, 370/392, 370/400, 370/401, 370/409, 370/419, 370/420, 370/463
• US Class Current: 370/392
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
• CPC Class Codes: H04L 45/66 Layer 2 routing, e.g. in Ethernet based MAN's
• CPC Class Codes: H04L 49/30 Peripheral units, e.g. input or output ports
• CPC Class Codes: H04L 49/358 Infiniband Switches
• CPC Class Codes: H04L 63/0227 Filtering policies mail message filtering H04L51/212

Abstract

Method for and system validating a network packet is provided. The method includes receiving a network packet at a port of a network device, the packet including a first indicia value and a second indicia value; comparing the first indicia value of the packet with at least a first value stored at the network device; comparing the second indicia value of the packet with at least a second value stored at the network device; and processing the packet if the first indicia value matches with the first value and the second indicia value matches with the second value; wherein the first indicia value is a partition key that restricts communication between a packet source and at least one destination; and the second indicia value is one or more of a source address and a destination address, where a same physical port of a source is assigned more than one source address.

Claims

1. A method for validating a network packet, comprising:

receiving a network packet at a port of a network device, the packet including a first indicia value and a second indicia value;

comparing the first indicia value of the packet with at least a first value stored at the network device;

comparing the second indicia value of the packet with at least a second value stored at network device;

processing the packet if the first indicia value matches with the first value and the second indicia value matches with the second value;

wherein the first indicia value is a partition key that restricts communication between a packet source and at least one destination; and

the second indicia value is one or more of a source address and a destination address, where a same physical port of a source is assigned more than one source address; and

selectively enabling and disabling comparison of the second indicia value of the packet with at least a second value.

2. The method of claim 1, wherein the network packet is an InfiniBand packet.

3. The method of claim 1, wherein the network device is one or more of a target channel adapter, a host channel adapter and a network device.

4. The method of claim 1, wherein the network device stores the first value and the second value at a content addressable memory.

5. A network device, comprising:

a port for receiving a packet with a first indicia value and a second indicia value; and

a validation module that stores a first value and a second value for validating the packet, where the validation module includes logic for comparing the first indicia value with the first value and the second indicia value with the second value;

wherein the first indicia value is a partition key that restricts communication between a packet source and at least one destination port; and

the second indicia value is one or more of a source address and a destination address, where a same physical port is assigned more than one source address;

wherein the validation logic is configured to receive an enable signal to selectively enable and disable the comparison of the second indicia value with the second value.

6. The network device of claim 5, wherein the network device is one or more of a switch, a host bus adapter and a target channel adapter.

7. The network device of claim 5, wherein the network packet is an InfiniBand packet.

8. The network device of claim 5, further including a storage module to store the first value and the second value.

9. The network device of claim 5, wherein the validation logic is configured to receive a select signal to select one of the source address and the destination address as the second indicia value for comparison.

10. A network device, comprising:

a port for receiving a packet with a first indicia value and a second indicia value; and

a validation module that stores a first value and a second value for validating the packet, where the validation module includes logic for comparing the first indicia value with the first value and the second indicia value with the second value;

wherein the first indicia value is a partition key that restricts communication between a packet source and at least one destination port; and

the second indicia value is one or more of a source address and a destination address, where a same physical port is assigned more than one source address, wherein the network device is a switch and the switch processes the packet for transmission to the destination if the second value matches with the second indicia value, wherein the second indicia value is the source address.

11. The network device of claim 10, wherein the network device is one or more of a switch, a host bus adapter and a target channel adapter.

12. The network device of claim 10, wherein the network packet is an InfiniBand packet.

13. The network device of claim 10, further including a storage module to store the first value and the second value.

14. The network device of claim 10, wherein the validation logic is configured to receive a select signal to select one of the source address and the destination address as the second indicia value for comparison.

15. The network device of claim 10, wherein the validation logic is configured to receive an enable signal to selectively enable and disable the comparison of the second indicia value with the second value.

16. A method for validating a network packet, comprising:

receiving a network packet at a port of a network device, the packet including a first indicia value and a second indicia value;

comparing the first indicia value of the packet with at least a first value stored at the network device;

comparing the second indicia value of the packet with at least a second value stored at the network device; and

processing the packet if the first indicia value matches with the first value and the second indicia value matches with the second value;

wherein the first indicia value is a partition key that restricts communication between a packet source and at least one destination; and

the second indicia value is one or more of a source address and a destination address, where a same physical port of a source is assigned more than one source address, wherein the network packet is an InfiniBand packet, and wherein the validation module includes an enable logic that selectively enables the comparison of the second indicia value with the second value.

17. The method for validating of claim 16 further comprising:

selecting one of the source address and the destination address as the second indicia value.

18. The method for validating of claim 16 further comprising:

selectively enabling and disabling comparison of the second indicia value of the packet with at least a second value.

19. The method of claim 16, wherein the network device is one or more of a target channel adapter, a host channel adapter and a network device.

20. The method of claim 16, wherein the network device stores the first value and the second value at a content addressable memory.

21. A validation module in a network device for validating a network device, comprising:

a storage module that stores a first value and a second value for validating the packet; and

logic for comparing a first indicia value with the first value and a second indicia value with the second value;

wherein the first indicia value is a partition key that restricts communication between a packet source and at least one destination port; and

the second indicia value is one or more of a source address and a destination address, where a same physical port is assigned more than one source address, wherein the validation logic is configured to receive an enable signal to selectively enable and disable the comparison of the second indicia value with the second value.

22. The validation module of claim 21, wherein the network device is one or more of a network switch, a host bus adapter and a target channel adapter.

23. The validation module of claim 21, wherein the network packet is an InfiniBand packet.

24. The validation module of claim 21, wherein the validation logic is configured to receive a select signal to select one of the source address and the destination address as the second indicia value for comparison.