Method for searching and storing routing table items and network chip

Abstract

Embodiments of the present invention provide a method for searching and storing routing table items and a network chip, which relate to the technical field of data processing and are applied to a network chip. The network chip includes a central processing unit, a second-level buffer, and a memory controller. The second-level buffer receives the first entry lookup instruction for the target routing entry sent by the central processing unit; determines the first memory where the target routing entry is located and the first address in the first memory, the first address The corresponding target storage space is currently not being accessed; sending a second entry lookup instruction carrying the first address to the memory controller connected to the first memory. The memory controller obtains the target routing entry from the first memory based on the first address, and feeds back the target routing entry to the central processing unit. Applying the solutions provided by the embodiments of the present invention can increase the speed of routing table item search.

Description

technical field [0001] The invention relates to the technical field of data processing, in particular to a method for searching and storing routing table items and a network chip. Background technique [0002] Network devices are generally equipped with a network chip. The network chip is generally equipped with a CPU (Central Processing Unit, central processing unit). The network chip can store routing entries, but the storage space of the network chip is generally small, and the number of routing entries that can be stored is relatively large. Therefore, the network device is generally configured with a memory for storing routing table entries. [0003] Based on this, after the CPU in the above-mentioned network chip receives the message, it needs to forward the message according to the routing table entry, and the CPU can send an entry lookup command to the L2C (Level Two Cache, second-level cache area) in the network chip, The L2C assists the CPU in accessing the memory...

AI Technical Summary

Problems solved by technology

However, the above method will cause other CPUs to wait for a long time to obtain the routing table entry, and the speed of routing table entry search is low.

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