A processing method, system and related device for DMA read operation
A processing method and technology of a processing system, applied in the field of computer information security communication, can solve the problems that the performance of the symmetric algorithm cannot be optimized, the full-duplex performance advantage and return of the PCI-E protocol cannot be exerted, and the performance of the symmetric algorithm can be optimized. , Full-duplex performance is sufficient, and the corresponding relationship is obvious.
Active Publication Date: 2018-08-21
Fisherman Information Technology Co Ltd
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Due to the "sequence" requirement of the PCI-E protocol itself, the completion packets corresponding to multiple read requests included in the same read operation command will be returned out of order, that is, the matching completion packets cannot be returned in the order of each read request. The matching operation can only be performed after all the completion packets corresponding to all read requests in the read operation command are received, which cannot take full advantage of the full-duplex performance of the PCI-E protocol, and the performance of the symmetric algorithm cannot be optimal.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0047]The core of the application is to provide a processing method for DMA read operations, which directly obtains the completion message corresponding to the PCI-E read request with each PCI-E read request as the smallest unit, and the corresponding relationship between the completion messages is very obvious. In the special data environment, the calculation algorithm of the PCI-E encryption card is accelerated, no secondary matching process is required, and the full-duplex performance of the PCI-E protocol is more fully exerted, and the performance of the symmetric algorithm is optimal.
[0048] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a processing method for a DMA reading operation. The processing method is applied to a PCI-E password card which is formed based on FPGA. The method comprises the steps that PCI-E memorizer reading requests are acquired from a DMA reading operation command; each PCI-E memorizer reading request is taken as a minimum unit, and all completion messages corresponding to the PCI-E memorizer reading requests are acquired; whether or not the DMA reading operation command is processed and completed is judged, if not, the other PCI-E memorizer reading request is read according toa preset rule, and the corresponding completion messages are acquired. According to the processing method for the DMA reading operation, each PCI-E memorizer reading request is a minimum unit, the completion messages corresponding to the PCI-E memorizer reading requests are directly acquired, the corresponding relation is obvious, the full-duplex performance of PCI-E protocols is more sufficiently achieved, the secondary matching process is not needed, and the performance of the symmetric algorithm is optimal. The invention further discloses a processing system of the DMA reading operation and a related device. The processing system and the related device have the advantages.
Description
technical field [0001] The present application relates to the technical field of computer information security communication, in particular to a processing method and system for DMA read operations, a PCI-E encryption card and a computer-readable storage medium. Background technique [0002] With the popularization of digital office, how to save the confidential data files generated in digital office is the focus of current research. There are mainly two ways of software encryption and hardware encryption. Encrypt confidential data files through a variety of encryption algorithms contained in the password card. [0003] The current encryption card interface protocol mainly adopts PCI (Peripheral Component Interconnect, peripheral component interconnection standard) and PCI-E (peripheral component interconnect express serial computer expansion bus standard). At present, high-end performance encryption cards mainly use FPGA ( Field-Programmable GateArray, that is, the PCI-E p...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/28
Inventor 王志华宋志华徐波
Owner Fisherman Information Technology Co Ltd