PCI-E bus distributed system intra-board and inter-board data communication method

Abstract

The invention discloses a data communication method based on PCI-E bus in panel and among panels distributed system, and aims at the data repeatedly copy problem in the prior art, including a data sending method based on PCI-E bus in panel distributed system, a data receiving method based on PCI-E bus in panel distributed system and a data sending method based on PCI-E bus among panel distributed system, wherein the invention applies single-ring sequence design with PCI Express bus share memory to multiplex three of that PCI Express drives the transmitting, the receiving buffer, and the virtual network upper protocol stack buffer. This invention also internally provides a data communication method between single panels and adopts the data sending and receiving method in panels, and externally applies agent ARP technology to make the external host to feel all units in panel as connecting in LAN. This invention overcomes defects in prior art, and fit to PCI-E bus based distributed system.

Description

technical field [0001] The present invention relates to a data communication method, in particular to a PCI-E (Peripheral Component Interconnect Express, high-speed peripheral component interconnection) bus distributed system intra-board and inter-board data communication method. Background technique [0002] In the field of embedded communication, high integration and low cost are increasingly becoming the goals pursued by equipment manufacturers. In a modern distributed communication system, different functions are realized by different processors, and the designer realizes the purpose of the whole system function through the division of labor and cooperation of these processors. [0003] How to realize efficient communication between processors has always been a problem that the industry attaches great importance to. Although the existing Ethernet-based communication method provides a solution for large-flow communication between processors, the cost is high and it is no...

AI Technical Summary

Problems solved by technology

[0009] The existing PCI-E bus-based distributed storage system, based on the general method of shared memory communication, is to construct two circular queues for sending and receiving in the driver to manage the cache, and use multiple direct memory copy methods in sending and receiving Realizing data transmission consumes a lot of CPU resources and is inefficient

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