UDP/IP hardware protocol stack based on fpga and its realization method

Abstract

The invention relates to an FPGA-based UDP / IP hardware protocol stack and an implementation method. The FPGA-based UDP / IP hardware protocol stack comprises a capture module, a frame splitting module,a UDP verification module, an execution module, a data cache module, an IP header generation module, a UDP header generation module, a framing module and an insertion module. Meanwhile, according to the overall design scheme of the system, a strategy of implementing a communication control protocol by using a hardware FPGA mode is developed, and the communication control protocol realizes remote configuration and management of a switch through a UDP message and an Ethernet frame. In order to ensure the exchange capacity and the data forwarding rate, the FPGA-based UDP / IP hardware protocol stack provided by the invention is implemented by using an FPGA, but the FPGA is not suitable for running complex routing protocols, in order to realize three-layer search and remote configuration and management and to ensure the validity and the reliability of the remote configuration and management, a dedicated communication control protocol needs to be designed to improve the data sending rate, sothat the entire system is optimized, and a lot of storage resources are saved.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to a field programmable gate array FPGA (Filed Programmable Gate Array)-based User Datagram Protocol / Internet Protocol UDP / IP (User Datagram Protocol / Internet Protocol) in the technical field of network communication. ) hardware protocol stack and its implementation method. The invention can be used in the high-speed and large-capacity Ethernet switching network to realize the analysis of the UDP / IP protocol by constructing an FPGA-based UDP / IP hardware protocol stack. Background technique [0002] In the high-speed data forwarding network, the traditional technology uses the UDP / IP protocol stack of the embedded system to improve the network switching capacity and data forwarding rate, but this technology will increase the resource consumption of Internet hosts, resulting in higher deployment costs, which is not conducive to its exchange Large-scale applications in the...

AI Technical Summary

Problems solved by technology

The disadvantage of this hardware protocol stack is that because each module needs to process its corresponding protocol, the amount of data processed by different modules in the same time is not the same, resulting in the waste of some hardware resources

The disadvantage of this method is that since the data storage in the UDP receiving module is a sequential operation, the data storage operation cannot be performed concurrently, resulting in more time-consuming data storage operations, and the overall efficiency of data processing is not high

The disadvantage of the hardware protocol stack of the invention is that the hardware protocol stack is only applicable to IPv6 networks, the hardware implementation complexity is high, the resource consumption is large, and it is difficult to apply to other network switching environments, which makes it difficult to build a hardware platform

The disadvantage of this method is that after the external interface module receives the sending request, it directly sends the data to the UDP sending data register module, but the external interface module does not check the source of the data request, so that the data transmission process may introduce data from other modules , leading to a reduction in the accuracy of data transmission

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