CN107770196A - The unidirectional processing platform of network data based on wireless communication module and SOC - Google Patents
The unidirectional processing platform of network data based on wireless communication module and SOC Download PDFInfo
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- CN107770196A CN107770196A CN201711217598.XA CN201711217598A CN107770196A CN 107770196 A CN107770196 A CN 107770196A CN 201711217598 A CN201711217598 A CN 201711217598A CN 107770196 A CN107770196 A CN 107770196A
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- 238000004891 communication Methods 0.000 title claims abstract description 41
- 238000012545 processing Methods 0.000 title claims abstract description 40
- 230000005540 biological transmission Effects 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000001914 filtration Methods 0.000 claims description 15
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 10
- 230000002093 peripheral effect Effects 0.000 abstract description 5
- 238000012546 transfer Methods 0.000 description 6
- 238000013515 script Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/161—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
- H04L69/162—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields involving adaptations of sockets based mechanisms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/12—Protocol engines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
Abstract
The invention discloses a kind of unidirectional processing platform of the network data based on wireless communication module and SOC.Platform includes two panels ZYNQ chips and wireless communication module, wireless communication module is connected with a piece of ZYNQ chips, wireless communication module peripheral hardware radio-frequency antenna, SIM card is placed provided with neck, two panels chip is respectively equipped with two network interfaces and a serial ports, and a network interface externally connects netting twine for common network interface, and another network interface is one-way transmission network interface, using a light by the one-way transmission network interface connection of two chips, one-way passage is realized.The present invention realizes gigabit one-way transmission from the driving layer of design level, secondary call is carried out using network packet engine libpcap to develop to realize the capture of any wireless and wired network packet processing and forwarding, the function can realize processing matching different business handling process according to the polytropy of business processing scene, and wired network interface according to demand carries out building the different network interface of extension to adapt to business scenario demand.
Description
Technical field
The present invention relates to radio communication, and in particular to a kind of network data list based on wireless communication module and SOC
To processing platform.
Background technology
At present, realizing that wire and wireless network interface carries out the skill of the unidirectional transmitting-receiving process platform of network data using SOC
On art is realized, wired and wireless network interface is integrated in SOC by less appearance, and less network interface between realizing SOC
One-way data transfer scheme.The scheme that one-way transmission builds Ethernet combination bottom layer driving to realize in SOC PL at present exists
Less appearance in technology at present, current 100,000,000 have special one-way transmission chip to realize, and gigabit one-way transmission currently without
Specialized chip is realized.
The content of the invention
In view of prior art situation, the present invention provides a kind of network data list based on wireless communication module and SOC
To processing platform.Present treatment platform is that wireless communication module SIM7600CE is accessed into SOC ZYNQ (at FPGA ARM
Manage chip) ARM LINUX systems, realize ZYNQ wireless network interface, while utilize the PL of ZYNQ chips（FPGA）Money
Source builds multiple network interface peripheral hardwares and realizes wired network interface, and wherein PS (processing system) realizes the unidirectional of gigabit network interface from bottom layer driving
Transfer function, network uni-directional packet transmitting-receiving process is realized by controlling linux kernel bottom layer driving and network packet receiving engine
Platform.
The present invention is directed to existing embedded SOC ZYNQ technological incorporation and expansion in terms of network packet processing platform
The limitation of application is opened up, wireless communication module SIM7600CE is carried and realizes wireless access, and the Ethernet IP kernel for the PL for passing through ZYNQ
Expand and designability, realize that the Multi-netmouth of user's request is expanded, while change linux kernel bottom layer driving to realize thousand
The function of million one-way transmissions, solve the one-way transmission difficult point of gigabit network interface, and network packet is utilized based on ARM LINUX platforms
Capture the storehouse LIBPCAP that increases income and realize the operation flows such as the seizure processing forward of network packet.Form a whole set of and be available for more industry
The network packet processing platform for expanding Peripheral Interface of scene of being engaged in application.
The present invention adopts the technical scheme that：A kind of network data based on wireless communication module and SOC is unidirectionally located
Platform, it is characterised in that the processing platform includes two panels ZYNQZ7030 chips and a wireless communication module
SIM7600CE, wherein wireless communication module SIM7600CE are connected with first ZYNQZ7030 chip by OTG-USB pins
Connecing, wireless communication module SIM7600CE carries out radio communication to being externally provided with radio-frequency antenna, while is provided with neck placement SIM card, and two
Piece ZYNQZ7030 chips are respectively equipped with two network interfaces and a serial ports, and one of network interface externally connects netting twine for common network interface, separately
An outer network interface is one-way transmission network interface, for inserting optical module, while using a light by two ZYNQZ7030 chips
One-way transmission network interface connection, realizes one-way passage；Two panels ZYNQZ7030 chips contain one-way transmission network port driving program；Two
Piece ZYNQZ7030 chips contain network data Packet capturing processing forward business procedure respectively；Each chip is powered by power module.
One-way transmission network port driving program of the present invention performs below scheme：One-way transmission network port driving flow is first
Ethernet phy drivings carry out phy initialization operation, read the corresponding configuration in device tree devicetree, including
1000base PCS/PMA type identification, phy addresses are judged, if the phy addresses of distribution exactly need to realize unidirectional pass
Defeated Ethernet, then the auto negotiation in register of removing controls, setting auto negotiation is off states, if normally with
Too network interface then skips the step and is directly entered Ethernet phy state timing function readings, obtains speed and dual-mode, realize with
The link up states netted very much.
Network data Packet capturing processing forward business procedure of the present invention performs below scheme：Read and parse first
The data flow of user's input enters network interface title, reception mode, and data flow sends network interface title, sending method, data stream filtering rule
Then；Secondly, determine libpcap packet receivings or socket packet receivings according to user-defined packet receiving mode, if
Libpcap packet receivings and if needing filtering rule, compiling filtering rule carries out circulation packet receiving again, if socket packet receiving modes
The ip then inputted by user establishes socekt with port and connected, and carries out reception data；Again, handle receiving data
After end, the transmission inputted according to user is set, if libpcap sends the transmission function pcap_ for then using libpcap
Sendpcaket sends data, if socket modes are then to send data by socket sockets come send.
The invention has the advantages that：Using SOC ZYNQ PL and PS flexible designability, according to
The business scenario demand of network packet processing platform, some Ethernet interfaces flexibly can be extended in PL designs, while using nothing
Accesses of the line communication module SIM7600CE in ZYNQZ7030 chips, channel radio is realized from PS linux kernel driving layer
Believe observability of the module SIM7600CE wireless network interface in ZYNQZ7030 chips, and then realize the wireless network interface of ZYNQ chips
Access.The designability and expansibility of the platform are a significant advantages, can be according to need in different business scenarios
The network inputs number asked expands external network interface, and is linked into the logical process that software view is carried out in linux operating systems.
The present invention realizes gigabit one-way transmission from the driving layer of design level, while utilizes network packet engine
Libpcap carries out secondary call and developed to realize the capture of any wireless and wired network packet processing and forwarding, and the function can
Processing matching different business handling process is realized according to the polytropy of business processing scene, and can be according to the peripheral hardware need of network interface
Ask and build the different network interface of extension to carry out PL engineerings to adapt to business scenario demand.
Brief description of the drawings
Fig. 1 is hardware block diagram of the present invention；
Fig. 2 is one-way transmission network port driving program flow diagram of the present invention；
Fig. 3 is inventive network packet capture processing forward business procedure flow chart.
Embodiment
Below in conjunction with drawings and examples, the present invention will be further described.
Reference picture 1, present treatment platform include two panels ZYNQZ7030 chips and a wireless communication module SIM7600CE, its
Middle wireless communication module SIM7600CE is attached with first ZYNQZ7030 chip by OTG-USB pins, radio communication
Module SIM7600CE carries out radio communication to being externally provided with radio-frequency antenna, while places SIM card, two panels ZYNQZ7030 provided with neck
Chip is respectively equipped with two network interfaces and a serial ports, and one of network interface externally connects netting twine for common network interface, another network interface
For one-way transmission network interface, for inserting optical module, while a light is used by the one-way transmission net of two ZYNQZ7030 chips
Mouth connection, realizes one-way passage；Two panels ZYNQZ7030 chips contain network data Packet capturing processing forward business procedure respectively；
Each chip is powered by power module.
Wherein wireless communication module SIM7600 CE access ZYNQ chips to realize the access of wireless network interface and expansion, ZYNQ
Chip is by PL flexible designability, and multiple network interfaces are realized in expansion, wherein unidirectional network interface is repaiied by LINUX kernel-driven
Change and realize one-way transmission function, therefore data flow may enter from wireless network interface, wired network interface, unidirectional network interface, and network data
The forward process business of bag be then by under LINUX system based on LIBPCAP storehouses carry out develop realization service processing software come
Realize.Specific implementation is divided into some following detailed description：
1. wireless communication module SIM7600CE is in SOC ZYNQ access
According to the bottom layer driving under wireless communication module SIM7600CE linux, fusion enters in linux kernel source code, increase
The enabled configuration of wireless communication module SIM7600CE drivings, corresponding driving in usb peripheral hardwares driving option.c in modification usb drivings
Code, in compiling karyogenesis correspond to kernel mirror image file uImage, realize supports and loading of the USB Serial in kernel.
Success load can be in the Linux system of ZYNQ chips after wireless communication module SIM7600CE /dev/ catalogues under
See USB Serial corresponding to wireless communication module SIM7600CE./ dev/ occurs when electric on (SuSE) Linux OS
The type information of ttyUSB1 ~ 4 as shown below, the control of AT instructions can be carried out using these serial ports.
Type information：
Shell scripts are developed, realize wireless communication module SIM7600CE AT networks control instruction and instruction of dialling up on the telephone.
Occur wireless communication module SIM7600CE wireless network card wwan0, deployment udhcpc visitors in the ARM Linux of ZYNQ chips
Family end, automatic acquisition ip is realized, mono- dynamic ip of wwan0 is distributed to by base station, realizes wireless network access function.
Present treatment stage+module xl2tpd vpn clients simultaneously, the vpn clients that l2tpd can be achieved log in, configuration
The information such as good vpn account names, password, vpn servers ip, you can log in vpn server-assignments using wwan0 networking capability
Account, a vpn client role of present treatment platform is realized, can be carried out with the vpn clients of any other forms in network
Data transfer, realize wireless data interaction flow.
Accesses of the wireless communication module SIM7600CE on first ZYNQZ7030 chip is by driving it compiling
Reach ZYNQZ7030 chips into linux kernel to identify wireless communication module SIM7600CE network interface, and by controlling pin
This program opens wireless communication module SIM7600CE function of surfing the Net, passes through vpn clients xl2tpd deployment configuration and vpn
Account Logon shell script realizes wireless vpn accesses.
2.ZYNQ 1000base PCS/PMA gigabit Ethernet mouths one-way transmission is realized
The PL designs of ZYNQ chips realize that the design of 1000base PCS/PMA Ethernet interfaces is expanded, and LINUX kernels realize Ethernet
Phy driving compilings, while in order to realize one-way transmission, modification phy drivings, in control register is changed, auto negotiation is set
Put, close auto negotiation, make Ethernet interface link up states when the realization of driving layer is unidirectional to be connected.Idiographic flow is as shown in Figure 2.
Reference picture 2, one-way transmission network port driving program perform below scheme：One-way transmission network port driving flow ether first
The initialization operation that phy drivings carry out phy is netted, reads the corresponding configuration in device tree devicetree, including
1000base PCS/PMA type identification, phy addresses are judged, if the phy addresses of distribution exactly need to realize unidirectional pass
Defeated Ethernet, then the auto negotiation in register of removing controls, setting auto negotiation is off states, if normally with
Too network interface then skips the step and is directly entered Ethernet phy state timing function readings, obtains speed and dual-mode, realize with
The link up states netted very much.
Wherein for cooperation 1000base PCS/PMA Ethernets PL designs, it is necessary to configure ZYNQ chips electrifying startup needs
Device tree file, configure phy relative addresses and associate the information such as driving name, while generate the device tree file that upper electricity needs are read
devicetree.dtb。
When compiling linux kernel, amended phy drivings are compiled into, and mac corresponding to macb drives, compiling life
Into linux kernel image file uImage.
Electrifying startup logins ARM LINUX systems, and ifconfig, which is checked, can see newly-increased network interface such as eth0.
And it is also according to above-mentioned flow, simply in phy drivings commonly to need the design procedure of the Ethernet interface of auto negotiation
It can identify whether to close auto negotiation automatically according to the phy addresses of distribution, thus design cycle realizes the expansion of Multi-netmouth.
3. network interface network packet reception processing forwarding service framework
Some Wireless-wire network interfaces realized according to business demand design, are carried out using network acquisition data parcel libpcap
Network data Packet capturing processing forward.Business framework operating process is as shown in Figure 3.
Reference picture 3, network data Packet capturing processing forward business procedure perform below scheme：Read first and parse user
The data flow of input enters network interface title, reception mode, and data flow sends network interface title, sending method, data stream filtering rule；Its
It is secondary, determine libpcap packet receivings or socket packet receivings according to user-defined packet receiving mode, if libpcap is received
If wrapping and needing filtering rule, compiling filtering rule carry out circulation packet receiving again, if socket packet receivings mode then by using
The ip of family input establishes socekt with port and connected, and carries out reception data；Again, carried out to receiving data after processing terminates,
The transmission inputted according to user is set,
If libpcap is sent then sends data using libpcap transmission function pcap_sendpcaket, if
Socket modes are then to send data by socket sockets come send.Thus realize that data enter to any from any network interface
The data path that network interface goes out.
The user-defined parameter of network interface network packet reception processing forwarding service open frame, user can arbitrarily define
The network interface and capture processing mode etc. that data enter out, add the function of filtering rule, five-tuple filtering can be achieved.
The business framework, any network interface of business platform design output is realized as data input, any network interface conduct
Data output, the business scenario of the capture processing forward of network packet, and the business interface of reserved data processing module are carried out,
Different data characteristicses can be directed to and carry out business data processing.Wherein the business framework supports two kinds of sides of libpcap and socket
The data access of formula, it is available for client to be arbitrarily designated data receiver and the mode sent；Support multiple socekt modes data simultaneously
Access or libpcap and socket mode blended data access ways.
The built-in function of encapsulation corresponding to libpcap is called in Libpcap modes data access and output respectively, is provided simultaneously with net
The rule of filtering can be put into input parameter by the function of network Packet Filtering, user, and being customized ground network data screening is defeated
Go out.
Embodiment：The present invention needs to insert a SIM card in net in sim card slot, while by this platform device
Radio-frequency antenna is twisted, and external network interface has the netting twine connection in net, and internal one-way transmission uses one by the optical module at both ends
Optical fiber is attached, by the network packet based on wireless communication module SIM7600 and SOC ZYNQ establishments unidirectionally at transmitting-receiving
After platform device power, ZYNQ linux operating systems are entered, is performed in linux platforms and SIM7600 networks is controlled
AT command scripts, open SIM7600 wireless networking capabilities, while perform wwan0 and obtain ip and login fixed vpn accounts
Function, the platform device is possessed vpn LANs ip.The executable program of data packet traffic processing framework is performed simultaneously, and
Input needs the mode and network interface of the network data path incoming and outgoing defined, writes filtration parameter according to demand.Execution can be real
The data of existing network path enter out process.As long as network enters out, network interface has netting twine to access or wirelessly vpn has data input, you can
Realize the data path function of platform of the present invention.Above operating procedure can be also integrated into electric self-starting script,
The execution of this upper electric self-starting script is added in rc.local, as long as business scenario can be achieved on platform device of the present invention after electricity
Demand, realize the path that enters out of network data, and ensure the one-way of path.
The implementation of wireless network interface is realized by compiling of the bottom layer driving on linux kernel source code in the present invention
The observability of wireless network interface in ZYNQ chip linux operating systems, and using the function of surfing the Net of sim cards, reach ZYNQ chips
The purpose of wireless communication；And wired network interface is the 1000BASE PCS/PMA (Ethernet IP kernel) based on Xilinx builds
Network interface, the state of unidirectional network interface link up (connection is successfully established) is realized by changing bottom layer driving layer function, reaches unidirectional
The purpose of data transfer.
Wherein to the realization of the solution of one-way data transfer, the technology for solving gigabit lower network packet one-way transmission is difficult
Point, one-way data transfer function both with the present invention solve the application for the business scenario for having high security requirements to data, make number
According to only can not entering, ensure the security of data, this is also the quantum jump that one-way transmission is realized in software-driven aspect.Utilize this
The network data Packet capturing processing forward business framework that invention possesses can realize the access of the any-mode of network data service, rule
The then function such as filtering, processing, forwarding, carry out data enters out specifying for path according to business scenario customizable, can be by one
Individual or some external Ethernet interface access netting twines, the other end access of netting twine possess the pc machines of data source transmission, and pc is followed
Ring sends data, and internal data way one-way transmission, this platform can be realized by the unidirectional transmitting-receiving process platform of present networks packet
The network interface of data output channel specified of user pc machines can be accessed by netting twine, can receive complete transmission source with wireshark
Data, it was demonstrated that the path accessibility of the unidirectional transmitting-receiving process platform of present networks packet.
Claims (3)
- A kind of 1. unidirectional processing platform of network data based on wireless communication module and SOC, it is characterised in that the processing Platform includes two panels ZYNQZ7030 chips and a wireless communication module SIM7600CE, wherein wireless communication module SIM7600CE is attached with first ZYNQZ7030 chip by OTG-USB pins, SIM7600CE pairs of wireless communication module It is externally provided with radio-frequency antenna and carries out radio communication, while SIM card is placed provided with neck, two panels ZYNQZ7030 chips is respectively equipped with two Individual network interface and a serial ports, one of network interface externally connect netting twine for common network interface, and another network interface is one-way transmission network interface, For inserting optical module, at the same it is using a light that the one-way transmission network interface connection of two ZYNQZ7030 chips, realization is unidirectional Path；Two panels ZYNQZ7030 chips contain one-way transmission network port driving program；Two panels ZYNQZ7030 chips contain net respectively Network packet capture processing forward business procedure；Each chip is powered by power module.
- 2. the unidirectional processing platform of the network data according to claim 1 based on wireless communication module and SOC, it is special Sign is that described one-way transmission network port driving program performs below scheme：One-way transmission network port driving flow Ethernet first Phy drivings carry out phy initialization operation, the corresponding configuration in device tree devicetree are read, including 1000base PCS/PMA type identification, phy addresses are judged, if the phy addresses of distribution exactly need to realize the ether of one-way transmission Net, then the auto negotiation in register of removing controls, setting auto negotiation is off states, if normal Ethernet interface is then Skip the step and be directly entered Ethernet phy state timing function readings, obtain speed and dual-mode, realize Ethernet Link up states.
- 3. the unidirectional processing platform of the network data according to claim 1 based on wireless communication module and SOC, it is special Sign is that described network data Packet capturing processing forward business procedure performs below scheme：Read first and to parse user defeated The data flow entered enters network interface title, reception mode, and data flow sends network interface title, sending method, data stream filtering rule；Its It is secondary, determine libpcap packet receivings or socket packet receivings according to user-defined packet receiving mode, if libpcap is received If wrapping and needing filtering rule, compiling filtering rule carry out circulation packet receiving again, if socket packet receivings mode then by using The ip of family input establishes socket with port and connected, and carries out reception data；Again, carried out to receiving data after processing terminates, The transmission inputted according to user is set, if libpcap sends the transmission function pcap_ for then using libpcap Sendpcaket sends data, if socket modes are then to send data by socket sockets come send.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108924017A (en) * | 2018-06-27 | 2018-11-30 | 湖南中车时代通信信号有限公司 | A kind of rail traffic embedded radio equipment dialing processing system |
| CN109302355A (en) * | 2018-11-23 | 2019-02-01 | 华东师范大学 | A kind of four tunnels, ten thousand mbit ethernet security switch based on ZYNQ |
| CN113489594A (en) * | 2021-06-04 | 2021-10-08 | 北京中航双兴科技有限公司 | PCIE real-time network card based on FPGA module |
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| CN103401741A (en) * | 2013-08-14 | 2013-11-20 | 北京泽华源科技有限公司 | Integrated circuit and data processing method |
| CN104050120A (en) * | 2014-06-12 | 2014-09-17 | 曹学良 | Device used for converting single-chip network into multi-serial port |
| CN207588910U (en) * | 2017-11-28 | 2018-07-06 | 天津光电通信技术有限公司 | The unidirectional processing platform of network data |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103401741A (en) * | 2013-08-14 | 2013-11-20 | 北京泽华源科技有限公司 | Integrated circuit and data processing method |
| CN104050120A (en) * | 2014-06-12 | 2014-09-17 | 曹学良 | Device used for converting single-chip network into multi-serial port |
| CN207588910U (en) * | 2017-11-28 | 2018-07-06 | 天津光电通信技术有限公司 | The unidirectional processing platform of network data |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108924017A (en) * | 2018-06-27 | 2018-11-30 | 湖南中车时代通信信号有限公司 | A kind of rail traffic embedded radio equipment dialing processing system |
| CN109302355A (en) * | 2018-11-23 | 2019-02-01 | 华东师范大学 | A kind of four tunnels, ten thousand mbit ethernet security switch based on ZYNQ |
| CN113489594A (en) * | 2021-06-04 | 2021-10-08 | 北京中航双兴科技有限公司 | PCIE real-time network card based on FPGA module |
| CN113489594B (en) * | 2021-06-04 | 2023-12-19 | 北京中航双兴科技有限公司 | PCIE real-time network card based on FPGA module |
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