Method used for on-chip inter-core network communication of multi-core processor

Abstract

The invention discloses a method used for on-chip inter-core network communication of a multi-core processor, comprising the steps of: 1) setting different MAC addresses for different cores, and adding a corresponding filtering rule to a network driver; 2) setting different IP addresses for the different cores by using a set of specific rules, so as to judge whether a destination address of a datapackage belongs to addresses of on-chip other cores or off-chip addresses when the data package is transmitted by a certain core; and 3) adding the judgement to the network driver, firstly analyzingthe destination address of the data package before the each data package is transmitted, and executing different operations according to whether the destination address belongs to the on-chip addresses or the off-chip addresses. Through adoption of the method of the invention, on-chip inter-core network communication of the multi-core processor is achieved, so that network communication of the multi-core processor can not be limited by connection failure in on-chip inter-core network, and a network standard interface can be adopted to perform communication; in addition, a user can achieve theon-chip inter-core network communication without additional processing during programming, thus the method is transparent to the user.

Description

technical field [0001] The invention relates to a method for network communication, in particular to a method for network communication between cores of a multi-core processor, and belongs to the technical field of network applications. Background technique [0002] The network uses physical links to connect isolated computer nodes together to form data links, so as to achieve the purpose of resource sharing and communication. Network communication is to connect various isolated devices through the network, and realize the communication between various computers through information exchange. At present, most embedded systems adopt the AMP mode (asymmetric multiprocessing, Asymmetric multiprocessing). Each processor core runs an independent operating system, and each core also needs to independently use network resources to communicate with the outside world. However, due to hardware limitations, multiple cores in the same processor cannot communicate through the network. T...

AI Technical Summary

Problems solved by technology

However, there are restrictions on network routing rules, that is, network data packets sent from a network card will not be forwarded back to this network card. Therefore, according to the normal network communication method, the internal cores of the multi-core processor cannot communicate through the network. communication

[0003] The existing inter-core communication methods of multi-core processors include inter-core interrupts, shared memory, etc., but the interface is more complicated, and it is far less convenient to use than the standard network communication interface. The method of inter-kernel network communication

Images