UDP effective message sending sequential control method

A timing control and message sending technology, applied in the network field, can solve the problems of high development cost, time-consuming, and inconsistency, and achieve the effect of ensuring full-speed transmission of the network

Active Publication Date: 2019-02-19
上海锐智集数电子有限公司
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  • Abstract
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Problems solved by technology

[0004] 1. The development cost is high, new non-standard hardware and software equipment is required, the development cost is high, and different applications may require different hardware and software;
[0005] 2. The maintenance cost is high. In order to adapt to different needs, at least the FPGA program needs to be modified and debugged and tested, which takes a lot of time;
[0006] 3. The compatibility is poor, the network protocol is r

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  • UDP effective message sending sequential control method

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Embodiment 1

[0026] A UDP effective message sending timing control method, the communication parties of the network message can be connected through a point-to-point connection through a network cable, or through a switch that can work at a line speed under layer 2 or layer 3 switching, that is, the source network card and the target network card pass through the network Line point-to-point communication or switch interconnection, after the sender of the network message is started, the software main program first creates the original socket so that the application layer can fully control the network message grouping process; then the sending buffer of the original socket is passed through The memory mapping method is mapped to the user space, so that the application layer software can directly control the sending of network packets; after the memory mapping, the returned address is reserved for subsequent data filling threads to access the sending space.

[0027] The main program of the sof...

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Abstract

The invention discloses a UDP effective message sending sequential control method. The method employs combination of a common hardware and software, and uses an original socket technology to directlybypass a protocol stack and a lower-layer MAC of an operation system, thereby fully controlling random packages and parameter change of lower-layer network messages; furthermore, data filling and transmission are separated using multithreading technology, and one CPU core is exclusively provided in transmission and receiving, thereby ensuring full-speed transmission of network; moreover, time among effective network messages is filled using ineffective network messages, thereby realizing nanosecond control of time interval of effective network messages.

Description

technical field [0001] The invention relates to the field of network technology, in particular to a method for controlling the sending sequence of UDP effective messages. Background technique [0002] With the continuous development of network technology, network technology is also widely used in embedded real-time systems. In order to meet the needs of different real-time applications, various real-time protocols have even appeared to ensure the real-time performance of applications; but the above-mentioned real-time applications are basically All are on the order of 10 microseconds to milliseconds. [0003] Due to the convenience, economy and good scalability of network connection, it is also used in high-speed data acquisition and playback systems. This type of system generally requires the interval time control of valid network messages to be at the nanosecond level, which cannot be achieved using conventional software technology in the past. Generally, custom-developed...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L29/06H04L12/861
CPCH04L49/9063H04L69/162H04L69/164H04L67/62
Inventor 岳兵王旭陈义华苏江温元凯徐烨光谢智勇郭锋
Owner 上海锐智集数电子有限公司
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