Information flow recognition method, network chip, and network device

An information flow recognition method, applicable to a main control chip in a network chip, the method comprising:

• caching a message entering the network chip into an on-chip memory of the network chip, and mapping the message in the on-chip memory to at least one piece of flow table information, wherein one piece of flow table information corresponds to one information flow;
• recognizing a potential flow that is a possible target flow in the information flow according to the at least one piece of flow table information;
• outputting the flow table information corresponding to the potential flow to an off-chip memory of the network chip to be accumulated;
• and
• reading the flow table information corresponding to the potential flow accumulated in the off-chip memory when a set trigger condition is met, and recognizing a target flow in the potential flow based on the read flow table information.

A network device, comprising:

• a memory configured to store a computer program;
• a first processor coupled to the memory and configured to execute the computer program, for sending a message to a network chip and/or receiving identification information of a target flow reported by the network chip;
• and
• the network chip comprising a main control chip and an off-chip memory, wherein the main control chip comprises:
• an on-chip memory configured to cache a message entering the network chip;
• a flow classification module having circuitry configured to map the message in the on-chip memory to at least one piece of flow table information, wherein one piece of flow table information corresponds to one information flow;
• a flow recognizing module having circuitry configured to recognize a potential flow that is a possible target flow in the information flow according to the at least one piece of flow table information, and output the flow table information corresponding to the potential flow to the off-chip memory to be accumulated;
• and
• a flow screening module having circuitry configured to read the flow table information corresponding to the potential flow accumulated in the off-chip memory when a set trigger condition is met, and recognize a target flow in the potential flow based on the read flow table information.