A chip and matching method from the perspective of udf application

Abstract

The invention provides a chip from the perspective of a UDF application, which comprises an interface information module, a virtual local area network module, a three-layer variable header module, a multi-protocol label module and a four-layer header module, wherein the interface information module, the virtual local area network module, the three-layer variable header module, the multi-protocol label module and the four-layer header module serve as key information for matching, several groups of offset positions and an initial byte number of each offset point are compiled, data defined by a user are taken out based on the configuration, a control list is accessed finally for matching. Network protocol message demands changing continuously on the current protocol surface can be flexibly supported, and the service life of the chip is longer.

Description

technical field [0001] The invention relates to the technical field of network processors, in particular to a chip and a matching method from the perspective of UDF application. Background technique [0002] Now with the development of the network and the development of cloud technology virtualization technology, many new protocol types will gradually appear. At present, the more popular protocols such as vxlan, nvgre, etc., these protocols generally use the third-layer information of the packet and then carry the second-layer The method of information is also a new tunneling technology. With the enhancement of switch capabilities, there will be more and more demands to pay attention to the header information above four layers. The traditional switch IC is hard-coded and has a long development cycle. First, the chip cannot recognize the specific variable protocol type, so it cannot directly meet these needs. The common method is to process these messages by sending them to ...

AI Technical Summary

Problems solved by technology

The traditional switch IC is hard-coded and has a long development cycle. First, the chip cannot recognize the specific variable protocol type, so it cannot directly meet these needs. The common method is to process these messages by sending them to the CPU. In the text, the software protocol stack on the cpu realizes the recognition processing of vxlan / nvgre, etc.

In the above solution, sending all the messages to the CPU, identifying and processing the messages through the software protocol stack will occupy a lot of CPU resources, and may lead to poor user experience for some applications, and the chip cannot do related security and statistics

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