Packet processing method and device

• US 10,200,284 B2
• Filed: 06/30/2016
• Issued: 02/05/2019
• Est. Priority Date: 12/31/2013
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Wang, Xiaozhong, Gong, Jun, Wang, Zhen
• Primary Examiner(s): Lin, Kenny S
• Application Number:
  US15/198,010
• Publication Number:
  US 20170201454A1
• Time in Patent Office: 950 Days
• Field of Search: None
• CPC Class Codes: H04L 45/54 Organization of routing tables
• CPC Class Codes: H04L 45/745 Address table lookup; Address filtering
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers

Abstract

Embodiments provide a packet processing method and a device. The method includes: acquiring a first packet, and determining an identifier of a first table. The method also includes determining description information of the first table, and performing first processing on the first packet according to the description information and the first table, where the first table is a convention table. The method also includes determining an identifier of a next table according to the description information of the first table, where the identifier of the next table corresponds to description information of the next table. The method also includes processing, according to the description information, and the next table, the first packet that has undergone the first processing.

Claims

1. A packet processing method, wherein the method comprises:

acquiring a first packet;

determining an identifier of a first table;

determining description information, corresponding to the identifier of the first table, of the first table;

performing first processing on the first packet according to the description information of the first table, and according to the first table, wherein the first table is a convention table comprising an entry, the entry comprises a first parameter provided for a first processing program, and the first processing program is configured to process the first packet according to the entry;

determining an identifier of a next table according to the description information of the first table, wherein the identifier of the next table corresponds to description information of the next table, and the first table comprises the identifier of the next table; and

processing, according to the description information of the next table, and according to the next table, the first packet that has undergone the first processing, wherein the next table is a convention table or a flow table, and the flow table comprises a second processing program and a second parameter provided for the second processing program.

2. The method according to claim 1, wherein the performing first processing on the first packet according to the description information of the first table, and according to the first table, comprises:

determining the first processing program and the first table according to the description information of the first table; and

performing the first processing on the first packet according to the first processing program and the first table.

3. The method according to claim 2, wherein the performing the first processing on the first packet according to the first processing program and the first table comprises:

determining the entry of the first table; and

performing the first processing on the first packet according to the entry of the first table by using the first processing program.

4. The method according to claim 2, wherein the description information of the first table comprises:

an identifier of the first processing program, a type of the first table, a base address of the first table, expression information of a search key of the first table, and a length of an action entry of the first table.

5. The method according to claim 1, wherein the determining an identifier of a next table according to the description information of the first table comprises:

determining the identifier of the next table according to the entry of the first table.

6. A device comprising a processor and a non-transitory computer readable medium containing instructions that, when executed by the processor, causes the processor to:

acquire a first packet;

determine an identifier of a first table;

determine description information, corresponding to the identifier of the first table, of the first table;

perform first processing on the first packet according to the description information, of the first table, and according to the first table, wherein the first table is a convention table comprising an entry, the entry comprises a first parameter provided for a first processing program, and the first processing program is configured to process the first packet according to the entry;

determine an identifier of a next table according to the description information of the first table, wherein the identifier of the next table corresponds to description information of the next table, and the first table includes the identifier of the next table; and

process, according to the next table and the description information of the next table, the first packet that has undergone the first processing, wherein the next table is a convention table or a flow table, and the flow table includes a second processing program and a second parameter provided for the second processing program.

7. The device according to claim 6, wherein the non-transitory computer readable medium further contains instructions that, when executed by the processor, causes the processor to:

determine the first processing program and the first table according to the description information of the first table; and

perform the first processing on the first packet according to the first processing program and the first table.

8. The device according to claim 7, wherein the non-transitory computer readable medium further contains instructions that, when executed by the processor, causes the processor to:

determine the entry of the first table, and perform the first processing on the first packet according to the entry of the first table by using the first processing program.

9. The device according to claim 7, wherein the non-transitory computer readable medium further contains instructions that, when executed by the processor, causes the processor to:

determine the identifier of the next table according to the entry of the first table.

10. The device according to claim 6, wherein the instructions are configured to be executed by a processor to:

determine the first processing program and the first table according to the description information of the first table; and

perform the first processing on the first packet according to the first processing program and the first table.

11. The device according to claim 7, wherein the instructions are configured to be executed by a processor to:

determine the entry of the first table, and perform the first processing on the first packet according to the entry of the first table by using the first processing program.

12. The device according to claim 7, wherein the non-transitory computer readable medium further contains instructions that, when executed by the processor, causes the processor to:

determine the identifier of the next table according to the entry of the first table.

13. A non-transitory computer readable storage medium storing instructions, wherein the instructions are configured to be executed by a processor to:

acquire a first packet;

determine an identifier of a first table;

determine description information, corresponding to the identifier of the first table, of the first table;

perform first processing on the first packet according to the description information, of the first table, and according to the first table, wherein the first table is a convention table comprising an entry, the entry comprises a first parameter provided for a first processing program, and the first processing program is configured to process the first packet according to the entry;

determine an identifier of a next table according to the description information of the first table, wherein the identifier of the next table corresponds to description information of the next table, and the first table includes the identifier of the next table; and

process, according to the next table and the description information of the next table, the first packet that has undergone the first processing, wherein the next table is a convention table or a flow table, and the flow table includes a second processing program and a second parameter provided for the second processing program.