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Data transmission method

A data transmission method and data technology, applied in the field of data transmission, can solve the problems of increasing data transmission delay and increasing the processing burden of intermediate forwarding processors, so as to achieve the effect of reducing processing load and saving time delay

Inactive Publication Date: 2008-12-31
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the process of converting Ethernet data packets to RapidIO data packets between multiple processors, there may be multiple packetization and unpacking processes, and multiple data copies are used, which increases the burden on the intermediate forwarding processors. Processing burden, but also increases the delay of data transmission

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Embodiment Construction

[0028] The specific implementation manners of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Aiming at the defects and deficiencies that existing Ethernet packets and RapidIO packet formats are different in data forwarding processing, there are many grouping, unpacking and data copying, the present invention provides a method for converting Ethernet packets to RapidIO packets Interface, and according to the interface grouping and unpacking at the sending end and receiving end, the forwarding processor only needs to parse the content of the data packet to achieve fast data forwarding, thereby reducing the load of the forwarding processor and the cost of data forwarding delay.

[0030] figure 1 is an overall block diagram of multiprocessor data transfer according to the present invention. The invention relates to a plurality of processors cooperating with each other to complete the data transmission function. The ...

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Abstract

The invention discloses a data transmission method which includes the steps that: S202, the topology structure of each processor in a data transmission system is determined, the port information of an Ethernet interface and / or a RapidIO interface of each processor, the address of each processor as well as a sending buffer zone descriptor and a receiving buffer zone descriptor of each processor are initialized. S204, the processor at a data sending end defines a new data head in an Ethernet data unit, the frame structure of Ethernet and a data sending buffer zone descriptor of the Ethernet are initialized and data sending is started. S206, a forwarding processor in the data transmission system receives the data coming from the data sending end and processes the receiving buffer zone descriptor of the Ethernet, which is in the state that data receiving is completed, to obtain the address of the RapidIO interface of a purpose processor at a data receiving end, the data sending is started and the receiving buffer zone descriptor of the Ethernet is recycled simultaneously. S208, the processor at the data receiving end analyzes information of the RapidIO receiving buffer zone descriptor in the state that the data receiving is completed, and recycles the receiving buffer zone descriptor of the RapidIO interface.

Description

technical field [0001] The present invention relates to the communication field, in particular to a data transmission method. Background technique [0002] In current communication systems, multiple processors are generally used to process data, so a large amount of data needs to be transmitted in the system. The Ethernet protocol and the RapidIO protocol are two high-speed data transmission protocols, and the use of the integrated Ethernet port and RapidIO port of the processor chip for high-speed data transmission within the board or between board-level chips has become more and more widely used. . [0003] For data transmission between multi-processors, it may be necessary to have a certain processor in the middle to perform the function of data forwarding to realize the data transmission between other processors due to the limitation of physical connection or other reasons. In this way, how to reduce the overhead caused by the processing and forwarding data of the inte...

Claims

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Application Information

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IPC IPC(8): H04L12/28H04L29/06
Inventor 余中云
Owner ZTE CORP
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