CN108055323A - A kind of communications protocol based on data link layer - Google Patents
A kind of communications protocol based on data link layer Download PDFInfo
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- CN108055323A CN108055323A CN201711326024.6A CN201711326024A CN108055323A CN 108055323 A CN108055323 A CN 108055323A CN 201711326024 A CN201711326024 A CN 201711326024A CN 108055323 A CN108055323 A CN 108055323A
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- 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
- H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
- H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
- H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
- H04L69/324—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the data link layer [OSI layer 2], e.g. HDLC
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/188—Time-out mechanisms
Abstract
The invention belongs to control system technical fields, and in particular to a kind of communications protocol based on data link layer.The network access of security function is realized by this communications protocol, call the sending and receiving driving of hardware, the transceiver interface of application layer is provided for upper strata, completely sends and receives service, effective receive information, so that communication is simple, reliable, safe and agreement is made more preferably to be suitable for control field communication.
Description
Technical field
The invention belongs to control system technical fields, and in particular to a kind of communications protocol based on data link layer.
Background technology
In industrial control system (such as DCS), especially with safely in leading control system, underlying device is led to
News protocol security seems particularly important.Traditional network communication protocol is the communication protocol using TCP/IP as core, in application layer
Related protocol and Encryption Algorithm can be used to ensure the safety of data communication.It is general in the control system based on FPGA
Network communication protocol is no longer applicable in.Since FPGA is unlike CPU, the programming based on operating system reduces design with compiling
Write the difficulty of code.In the case of some specific, some specific functions are also completed, standard network communication protocols are not easy reality
Now change and customize in fact.Therefore under the basis there is an urgent need for being programmed in FPGA, design a kind of communications protocol based on data link layer.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of communications protocol based on data link layer, so as to redefine
Communications protocol based on data link layer convenient for optimization, improves communication efficiency.
In order to realize the purpose, the present invention adopts the technical scheme that：
A kind of communications protocol based on data link layer, the network for realizing security function by this software design approach are visited
It asks, the sending and receiving of hardware is called to drive, provide the transceiver interface of application layer for upper strata, completely send and receive service, effective
Receive information；Specifically include following both sides design：
1. it determines to send function flow
It sends function and not only sends data, inside also receives data, the data packet received by parameter recvpkt returns；
It continuously transmits same data packet 15 times, and starts timer, do not receive data more than certain time, just resend the data packet
15 times, the forwarding step is repeated, does not receive data in 1 second yet, then returned and receive data time-out error；
If receiving data, the frame number of data packet of the frame number of the data packet received with just sending is compared
Compared with, if equal, data are passed into upper layer functions through recvpkt parameters, if unequal repeat forwarding step, in 1 second still
Correct data is not received, then returns to the mistake for not receiving correct data；It sends a successfully data packet and frame number is just added 1,
Its step are as follows：
1.1st step, upper procedure call communication interface to start；
1.2nd step, the data packet header to transmit add mac addresses, and into next step；
1.3rd step, judges whether transmission times transfinites, if being not above transmission times, into the 1.4th step, otherwise,
Error message is returned to, transmission terminates；
1.4th step, continuously transmit data and wait it is to be received, and into next step；
1.5th step if receiving data time-out, into the 1.6th step, otherwise carries out the 1.7th step；
1.6th step waits the time of setting, and transmission times is added 1, into the 1.3rd step；
1.7th step compares the frame number sent and received, and into next step；
1.8th step judges whether frame number is equal, if frame number is equal, into the 1.9th step, otherwise into the 1.6th
Step；
1.9th step returns to the data received, sends data success, and transmission terminates；
(2) receiver function flow is determined
The function is called when upper level applications passively receive data, calls query function inquiry control first before this
Device operating mode processed is determined when being operational mode, calls receiver function；
Receiver function creates a receiving thread, the data that controller to be received is waited to send；The thread scans network interface card always
On buffering area, if the data that controller is sent just take out the partial data and are put into one piece of sharing data area；
Upper layer functions at interval of setting time reading, once at interval of setting time write once by the sharing data area, receiving thread
The sharing data area；
The step of receiving data thread is as follows：
2.1st step, upper procedure call communication interface to start；
2.2nd step creates receiving thread, and into next step；
2.3rd step judges to create whether receiving thread succeeds, if it fails, then returning to establishment failure error message, and tie
Shu Chengxu, otherwise into the 2.4th step；
2.4th step creates program and handles other tasks；
It is as follows that receiver function receives data step：
3.1st step creates program creation receiving thread and starts；
3.2nd step, judges whether reception network card data succeeds, if it fails, then returning to error message, thread terminates, no
Then, into the 3.3rd step；
3.3rd step scans the data received from controller, and into next step；
3.4th step judges whether to find purpose data, if do not found, the 3.5th step is carried out, otherwise into the 3.6th
Step；
3.5th step waits setting time, into the 3.2nd step；
3.6th step, by purpose data write-in buffering area corresponding position, and into next step；
3.7th step, judges whether write-in succeeds, if write-in failure, returns to error message, thread terminates, otherwise, into
Enter the 3.5th step.
Further, a kind of communications protocol based on data link layer as described above, information block and splicing provide nothing
The interface of difference transmission.
Further, a kind of communications protocol based on data link layer as described above, the sender and recipient of network
Using synchronous communication mode, using the form of question-response；After certain frame is sent for the first time, recipient replys sender after receiving
One frame, when sender do not receive at the appointed time reply frame or the reply frame that receives it is not validated in the case of, carry out
Second of transmission；And so on, if all not receiving reply frame after continuously transmitting setting number, then it is assumed that the frame sends failure.
Further, a kind of communications protocol based on data link layer as described above, upper level applications carry out subpackage,
Send function no longer subpackage.
The advantageous effect of technical solution of the present invention is：It communicates simple, reliable, safe and agreement is made more preferably to be suitable for control
Field communication processed.
Description of the drawings
Fig. 1 is transmission function flow；
Fig. 2 is receiver function flow；
Fig. 3 is receiving thread flow.
Specific embodiment
Technical solution of the present invention is described in detail in the following with reference to the drawings and specific embodiments.
A kind of communications protocol based on data link layer of the present invention realizes the net of security function by this software design approach
Network accesses, and the sending and receiving of hardware is called to drive, and provides the transceiver interface of application layer for upper strata, completely sends and receives service, has
The receive information of effect；The sender and recipient of network use synchronous communication mode, using the form of question-response；Sender exists
After sending certain frame for the first time, recipient replys a frame after receiving, and frame or receipts are replied when sender does not receive at the appointed time
In the case that the reply frame that arrives is not validated, carries out second and send；And so on, if all not having after continuously transmitting setting number
Receive reply frame, then it is assumed that the frame sends failure.
Specifically include following both sides design：
1. it determines to send function flow
Information block and splicing provide the interface of indifference transmission.Upper level applications carry out subpackage, send function no longer
Subpackage.It sends function and not only sends data, inside also receives data, the data packet received by parameter recvpkt returns；Continuously
It sends same data packet 15 times, and starts timer, do not receive data more than certain time, just resend the data packet 15
It is secondary, the forwarding step is repeated, does not receive data in 1 second yet, then returns and receives data time-out error；
If receiving data, the frame number of data packet of the frame number of the data packet received with just sending is compared
Compared with, if equal, data are passed into upper layer functions through recvpkt parameters, if unequal repeat forwarding step, in 1 second still
Correct data is not received, then returns to the mistake for not receiving correct data；It sends a successfully data packet and frame number is just added 1,
As shown in Figure 1, its step are as follows：
1.1st step, upper procedure call communication interface to start；
1.2nd step, the data packet header to transmit add mac addresses, and into next step；
1.3rd step, judges whether transmission times transfinites, if being not above transmission times, into the 1.4th step, otherwise,
Error message is returned to, transmission terminates；
1.4th step, continuously transmit data and wait it is to be received, and into next step；
1.5th step if receiving data time-out, into the 1.6th step, otherwise carries out the 1.7th step；
1.6th step waits the time of setting, and transmission times is added 1, into the 1.3rd step；
1.7th step compares the frame number sent and received, and into next step；
1.8th step judges whether frame number is equal, if frame number is equal, into the 1.9th step, otherwise into the 1.6th
Step；
1.9th step returns to the data received, sends data success, and transmission terminates；
(2) receiver function flow is determined
The function is called when upper level applications passively receive data, calls query function inquiry control first before this
Device operating mode processed is determined when being operational mode, calls receiver function；
Receiver function creates a receiving thread, the data that controller to be received is waited to send；The thread scans network interface card always
On buffering area, if the data that controller is sent just take out the partial data and are put into one piece of sharing data area；
Upper layer functions at interval of setting time reading, once at interval of setting time write once by the sharing data area, receiving thread
The sharing data area.
As shown in figure 3, the step of receiving data thread is as follows：
2.1st step, upper procedure call communication interface to start；
2.2nd step creates receiving thread, and into next step；
2.3rd step judges to create whether receiving thread succeeds, if it fails, then returning to establishment failure error message, and tie
Shu Chengxu, otherwise into the 2.4th step；
2.4th step creates program and handles other tasks；
As shown in Fig. 2, receiver function reception data step is as follows：
3.1st step creates program creation receiving thread and starts；
3.2nd step, judges whether reception network card data succeeds, if it fails, then returning to error message, thread terminates, no
Then, into the 3.3rd step；
3.3rd step scans the data received from controller, and into next step；
3.4th step judges whether to find purpose data, if do not found, the 3.5th step is carried out, otherwise into the 3.6th
Step；
3.5th step waits setting time, into the 3.2nd step；
3.6th step, by purpose data write-in buffering area corresponding position, and into next step；
3.7th step, judges whether write-in succeeds, if write-in failure, returns to error message, thread terminates, otherwise, into
Enter the 3.5th step.
Claims (5)
1. a kind of communications protocol based on data link layer, it is characterised in that：
The network access of security function is realized by this communications protocol, the sending and receiving of hardware is called to drive, application layer is provided for upper strata
Transceiver interface, completely send and receive service, effective receive information；Specifically include following both sides design：
1. it determines to send function flow
It sends function and not only sends data, inside also receives data, the data packet received by parameter recvpkt returns；Continuously
It sends same data packet 15 times, and starts timer, do not receive data more than certain time, just resend the data packet 15
It is secondary, the forwarding step is repeated, does not receive data in 1 second yet, then returns and receives data time-out error；
If receiving data, by the frame number of the data packet received compared with the frame number of the data packet just sent, if
It is equal, then data are passed into upper layer functions through recvpkt parameters, forwarding step is repeated if unequal, is not received yet in 1 second
To correct data, then the mistake for not receiving correct data is returned；It sends a successfully data packet and frame number is just added 1, step
It is as follows：
1.1st step, upper procedure call communication interface to start；
1.2nd step, the data packet header to transmit add mac addresses, and into next step；
1.3rd step, judges whether transmission times transfinites, if being not above transmission times, into the 1.4th step, otherwise, returns
Error message, transmission terminate；
1.4th step, continuously transmit data and wait it is to be received, and into next step；
1.5th step if receiving data time-out, into the 1.6th step, otherwise carries out the 1.7th step；
1.6th step waits the time of setting, and transmission times is added 1, into the 1.3rd step；
1.7th step compares the frame number sent and received, and into next step；
1.8th step judges whether frame number is equal, if frame number is equal, into the 1.9th step, otherwise into the 1.6th step；
1.9th step returns to the data received, sends data success, and transmission terminates；
(2) receiver function flow is determined
The function is called when upper level applications passively receive data, calls query function inquiry controller first before this
Operating mode is determined when being operational mode, calls receiver function；
Receiver function creates a receiving thread, the data that controller to be received is waited to send；The thread is scanned on network interface card always
Buffering area, if the data that controller is sent just take out the partial data and are put into one piece of sharing data area；
Upper layer functions read the once sharing data area at interval of setting time, and receiving thread is write once this at interval of setting time and is total to
Enjoy data field；
The step of receiving data thread is as follows：
2.1st step, upper procedure call communication interface to start；
2.2nd step creates receiving thread, and into next step；
2.3rd step judges to create whether receiving thread succeeds, creates failure error message if it fails, then returning, and terminate journey
Sequence, otherwise into the 2.4th step；
2.4th step creates program and handles other tasks；
It is as follows that receiver function receives data step：
3.1st step creates program creation receiving thread and starts；
3.2nd step, judges whether reception network card data succeeds, if it fails, then returning to error message, thread terminates, otherwise, into
Enter the 3.3rd step；
3.3rd step scans the data received from controller, and into next step；
3.4th step judges whether to find purpose data, if do not found, the 3.5th step is carried out, otherwise into the 3.6th step；
3.5th step waits setting time, into the 3.2nd step；
3.6th step, by purpose data write-in buffering area corresponding position, and into next step；
3.7th step, judges whether write-in succeeds, if write-in failure, returns to error message, thread terminates, otherwise, into the
3.5 step.
2. a kind of communications protocol based on data link layer as described in claim 1, it is characterised in that：Information block and splicing
The interface of indifference transmission is provided.
3. a kind of communications protocol based on data link layer as described in claim 1, it is characterised in that：The sender of network and
Recipient uses synchronous communication mode, using the form of question-response；After certain frame is sent for the first time, recipient receives sender
After reply a frame, when sender do not receive at the appointed time reply frame or receive reply the not validated situation of frame
Under, it carries out second and sends；And so on, if all not receiving reply frame after continuously transmitting setting number, then it is assumed that the frame is sent out
Send failure.
4. a kind of communications protocol based on data link layer as described in claim 1, it is characterised in that：Upper level applications into
Row subpackage sends function no longer subpackage.
5. a kind of communications protocol based on data link layer as described in claim 1, it is characterised in that：Information block and splicing
The interface of indifference transmission is provided；The sender and recipient of network use synchronous communication mode, using the form of question-response；
For sender after certain frame is sent for the first time, recipient replys a frame after receiving, when sender does not receive back at the appointed time
In the case that multi-frame or the reply frame received are not validated, carry out second and send；And so on, if continuously transmitting setting time
Reply frame is not all received after number, then it is assumed that the frame sends failure；Upper level applications carry out subpackage, send function and no longer divide
Bag.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711326024.6A CN108055323B (en) | 2017-12-13 | 2017-12-13 | Communication method based on data link layer |
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| CN201711326024.6A CN108055323B (en) | 2017-12-13 | 2017-12-13 | Communication method based on data link layer |
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| CN108055323B CN108055323B (en) | 2020-11-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450838A (en) * | 2018-06-27 | 2019-03-08 | 北京班尼费特科技有限公司 | A kind of intelligent express delivery cabinet network communication protocol based on Intelligent internet of things interaction platform |
| CN110098869A (en) * | 2019-05-09 | 2019-08-06 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of optical-fibre channel method for message transmission |
| CN110619012A (en) * | 2019-08-20 | 2019-12-27 | 西安航天动力技术研究所 | Online data processing method for missile fire control system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1808387A (en) * | 2004-12-30 | 2006-07-26 | 英特尔公司 | Providing access to data shared by packet processing threads |
| CN101277173A (en) * | 2008-05-07 | 2008-10-01 | 中国电子科技集团公司第三十研究所 | Data answering method for shortwave ARQ data transmission |
| CN101809923A (en) * | 2007-10-01 | 2010-08-18 | 高通股份有限公司 | Acknowledge mode polling with immediate status report timing |
| US20120300614A1 (en) * | 2011-05-23 | 2012-11-29 | Samsung Electronics Co., Ltd. | Method and apparatus for error correction ciphering in mobile communication system |
| CN103141050A (en) * | 2011-12-28 | 2013-06-05 | 华为技术有限公司 | Data packet retransmission method and node in quick path interconnect system |
-
2017
- 2017-12-13 CN CN201711326024.6A patent/CN108055323B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1808387A (en) * | 2004-12-30 | 2006-07-26 | 英特尔公司 | Providing access to data shared by packet processing threads |
| CN101809923A (en) * | 2007-10-01 | 2010-08-18 | 高通股份有限公司 | Acknowledge mode polling with immediate status report timing |
| CN101277173A (en) * | 2008-05-07 | 2008-10-01 | 中国电子科技集团公司第三十研究所 | Data answering method for shortwave ARQ data transmission |
| US20120300614A1 (en) * | 2011-05-23 | 2012-11-29 | Samsung Electronics Co., Ltd. | Method and apparatus for error correction ciphering in mobile communication system |
| CN103141050A (en) * | 2011-12-28 | 2013-06-05 | 华为技术有限公司 | Data packet retransmission method and node in quick path interconnect system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450838A (en) * | 2018-06-27 | 2019-03-08 | 北京班尼费特科技有限公司 | A kind of intelligent express delivery cabinet network communication protocol based on Intelligent internet of things interaction platform |
| CN110098869A (en) * | 2019-05-09 | 2019-08-06 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of optical-fibre channel method for message transmission |
| CN110098869B (en) * | 2019-05-09 | 2021-06-01 | 中国航空工业集团公司西安航空计算技术研究所 | Optical fiber channel message transmission method |
| CN110619012A (en) * | 2019-08-20 | 2019-12-27 | 西安航天动力技术研究所 | Online data processing method for missile fire control system |
| CN110619012B (en) * | 2019-08-20 | 2022-09-27 | 西安航天动力技术研究所 | Online data processing method for missile fire control system |
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