Method for transmitting IP and CAN services on FC network

Abstract

The invention discloses a method for transmitting IP and CAN services on an FC network, and relates to the field of FC network transmission. The method comprises the steps that: (1), a kernel module is constructed on an HBA card; and the kernel module is initialized according to a configuration file and configuration software, so that initialization information is obtained; (2), an FC interface layer encapsulates an Ethernet frame or a CAN frame into an FC-AE-ASM frame according to the initialization information, and sends the FC-AE-ASM frame to the HBA card, so that the HBA card is enabled to send data; and (3), an FC interface layer receiving module decapsulates the FC-AE-ASM frame into the Ethernet frame or the CAN frame by utilizing a data difference frame type, and sends the Ethernet frame or the CAN frame to a corresponding upper protocol stack and CAN protocol software. According to the method disclosed by the invention, the HBA card is used as physical transmission equipment; due to design of the kernel module, the configuration software and the FC interface layer, transmission of IP and CAN services on the FC network can be realized; the usability of an FC-AE network data transmission programming interface is improved; simultaneously, application requirements of the IP services and the CAN services in a high-reliability control network are expanded; a scheduling buffer mechanism is arranged; and thus, zero packet loss in UDP transmission is realized by utilization of an FC-AE underlying flow control mechanism.

Description

technical field [0001] The invention relates to the field of FC network transmission, in particular to a method for transmitting IP and CAN services on the FC network. Background technique [0002] FC (Fiber Channel) is a high-speed serial transmission bus proposed by the American Standardization Institute (ANSI). Due to its dual advantages of channel and network, it has the advantages of high bandwidth, high reliability, high stability, and resistance to electromagnetic interference. Provide very stable and reliable fiber optic connection, easy to build large-scale data transmission and communication network. The FC-AE standard is a set of protocols that FC applies to the avionics environment. It is mainly used for data communication between various devices in the avionics environment, and to transmit data such as video, command, instrumentation, and sensors. Currently, FC-AE The network has been widely used in many avionics networks and military equipment. [0003] The r...

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Problems solved by technology

[0005] With the progress and development of society, people have higher and higher requirements for data stability and reliability. The previous Ethernet cannot meet the growing needs due to its own defects. People need a more stable and reliable network for data transmission. Transmission, especially in shipboard, airborne and other applications that require reliable high-speed transmission of control commands and data streams, FC-AE network is widely used, but the upper layer application interface of FC-AE network is not universal and programming is complicated, and the CAN bus With the large-scale application of Ethernet on a global scale, UDP transmission instructions and data services cannot meet the requirements of traditional Ethernet UDP service datagram reliability, so it is urgent to propose a new technology to improve the reliability of UDP datagrams; so it is necessary A technology that can connect Ethernet messages and CAN messages to the FC-AE network without loss on the basis of ensuring the reliability of data transmission

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