Data dynamic routing system and method based on RapidIO message mode

Abstract

The invention provides a data dynamic routing system and method based on a RapidIO message mode. A subscription and publication mechanism is adopted, an application component declares the required subscription or publication data type through a client agent, and a service agent instead of the application component itself decides where the data come and go. The system and method are mainly characterized in that information is irrelevant to a device address and is identified based on content, data subscription or publication can be achieved simply by identifying the data type, and a source address and a target address are not needed. Increase and decrease of the number of communication devices do not affect the operation of the system. Therefore, by the adoption of the data dynamic routing method based on the subscription and publication mechanism, middleware used for processing resource virtualization is obtained and located between the application component and hardware, a data receiving and sending interface provided by the middleware is called by an application program based on a total exchange RapidIO network, and then transparent data transmission between two nodes is achieved.

Description

technical field [0001] The invention relates to a data dynamic routing system and method based on RapidIO message mode, in particular to a RapidIO message mode data dynamic routing system and method suitable for RapidIO protocol. Background technique [0002] RapidIO technology is a high-performance, low-pin-count, packet-based interconnection architecture, one of the most commonly used transmission protocols that comply with the OPEN-VPX standard, and is designed to meet the needs of high-performance embedded systems An open interconnect technology standard. There are two data transmission modes provided by the RapidIO transmission protocol: message transmission mode and DMA transmission mode. The message mode is similar to Ethernet data packet transmission, suitable for data mutual transmission between multiple nodes, the advantage is that the transmission is flexible, and the disadvantage is that the processor needs to respond frequently to interrupts in the message mode...

AI Technical Summary

Problems solved by technology

The message mode is similar to Ethernet data packet transmission, suitable for data mutual transmission between multiple nodes, the advantage is that the transmission is flexible, and the disadvantage is that the processor needs to respond frequently to interrupts in the message mode, resulting in relatively low transmission efficiency; while the DMA mode In this case, the receiver must allocate a section of storage space in advance, and then the sender writes the data directly. The advantage is that the transmission efficiency is high. The disadvantage is that when multiple nodes transmit data, each node needs to allocate memory in advance. Complex operations and high resource requirements

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