Data transmitting and routing method facing to virtual machine based on FPGA

Abstract

The invention relates to a data transmitting and a routing method facing to a virtual machine based on an FPGA, comprising the following steps: a FPGA hardware is used for exchanging and routing data; the data is transmitted to a MAC from a PHY module; a data packet is transmitted to a network filter so as to complete the filtering function and the exchanging function of the data packet after being reformed in the MAC; the processed data is transmitted to a protocol processor which is used for maintaining the state and the read-write operation of each virtual machine queue; the date which is sent by the network filter is memorized in the queue in a DDR2; and a descriptor is used for completing the maintenance of the descriptor of the data, reading and writing the descriptor from a host and writing the descriptor back to the host. By using the method of the scheme, a soft ware exchanging and routing work which is formerly operated in a VMware soft ware is completed in a hardware so as to liberate the operation of CPU; simultaneously because the processing speed of the hardware level is far above the processing speed of the soft ware level, therefore, the date exchanging and routingspeed is greatly improved and the data respondse time is reduced.

Description

technical field [0001] The invention relates to network data transmission in virtualization applications, in particular to a routing method between FPGA hardware and a virtual machine. Background technique [0002] Virtualization refers to the operation of computing elements on a virtual basis rather than a real basis. It is a solution to simplify management and optimize resources. This kind of limited fixed resources is re-planned according to different needs to achieve maximum utilization. The idea is called virtualization technology in the IT field. Virtualization technology can expand the capacity of hardware and simplify the process of reconfiguring software. CPU virtualization technology can simulate multiple CPUs in parallel with a single CPU, allowing one platform to run multiple operating systems at the same time, and applications can run in independent spaces without affecting each other, thereby significantly improving computer work efficiency. But as the number...

AI Technical Summary

Problems solved by technology

VMSware is a routing and dispatching software. All data must be exchanged through the software. When the amount of data is large, the switching module of the software will be blocked, which will inevitably consume a lot of CPU resources and memory resources at the same time, which will hinder the network card from processing data. throughput

[0004] like figure 1 As shown, in the working principle diagram of the Xen software used in the prior art, there is a Xen management module between the network card and the driver module to complete the interrupt response work, and then, the data is handed over to the device driver module in the driver module for processing and receiving. Data packets, and then the received data packets are passed to the bridge module, and the grid module completes the bridge project, which is the so-called switching function: sending the data packets of different virtual machines to different registration modules, because all data are It needs to go through the bridge module, so once the amount of data increases, the bridge processing data will be blocked, consuming a lot of resources, and the bridge will not be able to handle the situation, and the exchange of internal and external data by the network card will be hindered

Images