CN108183832A - A kind of acquisition methods of network data - Google Patents
A kind of acquisition methods of network data Download PDFInfo
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- CN108183832A CN108183832A CN201711213660.8A CN201711213660A CN108183832A CN 108183832 A CN108183832 A CN 108183832A CN 201711213660 A CN201711213660 A CN 201711213660A CN 108183832 A CN108183832 A CN 108183832A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/04—Processing captured monitoring data, e.g. for logfile generation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
- G06F12/10—Address translation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
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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
- H04L69/06—Notations for structuring of protocol data, e.g. abstract syntax notation one [ASN.1]
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Theoretical Computer Science (AREA)
- Data Mining & Analysis (AREA)
- Computer Security & Cryptography (AREA)
- Environmental & Geological Engineering (AREA)
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Small-Scale Networks (AREA)
Abstract
The present invention relates to a kind of acquisition methods of network data, including：S1. network data is acquired from Ethernet by hardware collecting device；S2. the good working condition of the network data is judged；S3. according to the good working condition of the network data, network data addition identification information and encapsulation are packaged, and shared.The memory of data processing equipment and the core buffer of hardware collecting device are mapped, and the CPU for avoiding data processing equipment interrupts the acquisition for participating in network data, and then avoid data processing equipment data-bag lost caused by CPU processing capacities overload.The rate for making network data acquisition by hardware collecting device becomes faster, and ensure that acquisition performance.Therefore in the design of highspeed network applications system, it is not necessary to consider that the CPU of data processing equipment participates in the situation of network data acquisition, can effectively reduce the design difficulty and uncertainty of whole system.
Description
Technical field
The present invention relates to a kind of data capture method more particularly to a kind of acquisition methods of network data.
Background technology
With space flight and the fast development of space technology, spacecraft data communication system is gradually from relatively single number piping
System develops into the more equipment of connection, multi-platform or even multi-aircraft assembly complex data exchange system, has higher communication
It is required that and new feature.The flexibility of Ethernet, the high bandwidth for obtaining convenient communication access and data transmission, and adapt to
Spacecraft field communicating requirement.The relatively traditional spacecraft of the Ethernet application of high-speed is applied and spacecraft-testing application is new
Field.It needs to carry out technology innovation to existing space industry data capture method using high-speed network, just can guarantee technology
Implement effective.
In traditional Network Data Capture method, when the speed of network interface card receiving network data is too fast, in data acquisition
CPU processing capacities are overloaded, and when causing the receiving queue length to reach certain numerical value, system enters " chokes " state, all subsequent to connect
The network data of receipts is dropped, until receiving queue becomes empty again.Meanwhile the processing capacity of CPU to network data at
It is extremely important during reason, it is difficult to ensure reaching some data rate data integrity, so as to make CPU models
Selection and Design is difficult to hold.And when network data length very in short-term, under identical ethernet data stream rate conditions,
The interrupt operation of CPU processing can also be significantly increased, and can equally cause loss of data.
Invention content
The purpose of the present invention is to provide a kind of acquisition methods of network data, solve data during Network Data Capture
The problem of being easily lost.
For achieving the above object, the present invention provides a kind of acquisition methods of network data, including：
S1. network data is acquired from Ethernet by hardware collecting device；
S2. the good working condition of the network data is judged；
S3. according to the good working condition of the network data, network data addition identification information and encapsulation are packaged, and
It is shared.
According to an aspect of the present invention, according to the good working condition of the network data, the network data is added and is marked
The step of knowing information and encapsulation packing includes：
If S31. the network data is complete, Screening Treatment is carried out to the network data；
S32. to the network data interpolation data identification information after Screening Treatment；
S33. the network data of interpolation data identification information is encapsulated and be packaged, and be delivered to the hardware collecting device
Core buffer shared.
According to an aspect of the present invention, according to the good working condition of the network data, the network data is added and is marked
It is further included in the step of knowing information and encapsulation packing：
If the S34. network data missing, to the network data interpolation data identification information, and encapsulates packing；
S35., the network data of interpolation data identification information is transported to the memory buffer of the hardware collecting device
It is shared in area.
According to an aspect of the present invention, the data identification information includes device-identification information and time identifier information,
Wherein, the device-identification information is used to mark the status information of the good working condition of the network data, and the time identifier is used
In the receiving time information for marking the network data.
According to an aspect of the present invention, if the network data is complete, Screening Treatment is carried out to the network data
The step of include：
S21. the type of the network data is identified in the hardware collecting device；
S22. the transport protocol of the network data is identified in the hardware collecting device；
S23. the hardware collecting device carries out Screening Treatment according to the filter condition of setting to the network data.
According to an aspect of the present invention, the hardware collecting device according to the filter condition of setting to the network data
In the step of carrying out Screening Treatment, the filter condition is assisted according to the transmission of the type and the network data of the network data
View is configured.
According to an aspect of the present invention, the memory of the core buffer of the hardware collecting device and data processing equipment
It is mapped, the network number that the core buffer that the data processing equipment directly acquires the hardware collecting device is shared
According to.
According to an aspect of the present invention, it is total using PCI between the hardware collecting device and the data processing equipment
Line carries out the transmission of the network data.
The hardware collecting device is equipped with ethernet physical layer data-interface, and the hardware collecting device passes through the ether
Net physical layer data interface obtains the network data in the Ethernet.
According to an aspect of the present invention, the network data of interpolation data identification information is encapsulated into the step of being packaged
In, the network data, which is packaged, is packaged as PCAP data packets.
According to an aspect of the present invention, if the network data lacks, the network data interpolation data is identified
Information, and the step of encapsulate packing in, the network data, which is packaged, is packaged as PCAP data packets.
A scheme according to the present invention, hardware collecting device judge network data in data acquisition,
So as to the judgement of integrality quickly carried out effectively and to network data.By hardware collecting device to the complete of network data
Property judge and addition identification information, can fully ensure that the network data that data processing equipment is obtained by identification information
Integrality.Therefore, the efficiency and integrality of network data acquisition process are ensure that by hardware collecting device acquisition network data,
It is data processing operation that data processing equipment, which provides data storage,.Cpu performance in data processing equipment can effectively be utilized.
A scheme according to the present invention, the memory of data processing equipment are carried out with the core buffer of hardware collecting device
Mapping, avoid data processing equipment CPU interrupt participate in network data acquisition, and then avoid data processing equipment due to
Data-bag lost caused by CPU processing capacities are overloaded.The rate for making network data acquisition by hardware collecting device becomes faster, and ensures
Acquisition performance.Therefore in the design of highspeed network applications system, it is not necessary to consider that the CPU of data processing equipment participates in network number
According to the situation of acquisition, the design difficulty and uncertainty of whole system can be effectively reduced.
Description of the drawings
Fig. 1 schematically shows a kind of step block diagram of the acquisition methods of embodiment according to the present invention；
Fig. 2 schematically shows a kind of device connection diagram of the acquisition methods of embodiment according to the present invention；
Fig. 3 schematically shows a kind of structure chart of the acquisition methods of embodiment according to the present invention；
Fig. 4 schematically shows flow when network data is complete in the acquisition methods of embodiment according to the present invention a kind of
Figure；
Fig. 5 schematically shows flow when network data lacks in the acquisition methods of embodiment according to the present invention a kind of
Figure.
Specific embodiment
It, below will be to embodiment in order to illustrate more clearly of embodiment of the present invention or technical solution of the prior art
Needed in attached drawing be briefly described.It should be evident that the accompanying drawings in the following description is only some of the present invention
Embodiment, for those of ordinary skills, without creative efforts, can also be according to these
Attached drawing obtains other attached drawings.
The present invention is described in detail with reference to the accompanying drawings and detailed description, embodiment cannot go to live in the household of one's in-laws on getting married one by one herein
It states, but therefore embodiments of the present invention are not defined in implementation below.
As shown in Figure 1, a kind of embodiment according to the present invention, a kind of acquisition methods of network data of the invention, packet
It includes：
S1. network data is acquired from Ethernet by hardware collecting device；
S2. the good working condition of network data is judged；
S3. according to the good working condition of network data, network data addition identification information and encapsulation are packaged, and be total to
It enjoys.
The present invention will be described in detail to be detailed, and the method for the present invention is described in detail with reference to attached drawing.
With reference to shown in Fig. 2 and Fig. 3, a kind of embodiment according to the present invention is based in network acquisition methods of the invention
Data processing equipment 1, hardware collecting device 2 and interchanger 3 are realized.In the present embodiment, data processing equipment 1, hardware are adopted
Collection equipment 2 and interchanger 3 are sequentially connected.It is attached between data processing equipment 1 and hardware collecting device 2 by pci bus.
It is connected between hardware collecting device 2 and interchanger 3 by cable or fiber optic cable.Interchanger 3 is connect with Ethernet.In this implementation
In mode, hardware collecting device 2 has ethernet physical layer data-interface.Hardware collecting device 2 passes through ethernet physical layer number
According to interface from interchanger 3 obtain Ethernet in network data.
With reference to shown in Fig. 2 and Fig. 4, a kind of embodiment according to the present invention, in S1 steps, interchanger 3 obtains Ethernet
In network data.Hardware collecting device 2 obtains the network data in Ethernet from interchanger 3.In S2 steps, hardware acquisition is set
The integrality of standby 2 pairs of network datas judges, next step is carried out to network data according to judging result hardware collecting device 2
Processing.
A kind of embodiment according to the present invention, in S3 steps, hardware collecting device 2 carries out the integrality of network data
After judgement, network data addition identification information and encapsulation are packaged, and shared according to the good working condition of network data.S3 is walked
Suddenly include：
If S31. network data is complete, Screening Treatment is carried out to the network data.With reference to shown in Fig. 2 and Fig. 4, at this
In embodiment, if network data is complete, hardware collecting device 2 carries out Screening Treatment to network data.Wherein, it further includes：
S311. the type of network data is identified in hardware collecting device 2.
S312. the transport protocol of network data is identified in hardware collecting device 2.
S313. after the completion of hardware collecting device 2 identifies network data, according to preset filter condition to network number
According to progress Screening Treatment.In the present embodiment, filter condition is according to the type of network data and the transport protocol of network data
It is set.
S32. to the network data interpolation data identification information after Screening Treatment.With reference to shown in Fig. 2 and Fig. 4, in this implementation
In mode, hardware collecting device 2 is to the network data interpolation data identification information after Screening Treatment.Wherein, data identification information
Including device-identification information and time identifier information.Device-identification information is the net for hardware collecting device 2 to be marked to receive
The status information of the good working condition of network data, for example, network data is completely then in device-identification information by the network after identification
Data Identification is good working condition.Time identifier is the receiving time letter for hardware collecting device 2 to be marked to receive network data
Breath.
S33. the network data of interpolation data identification information is encapsulated and be packaged, and the memory for being delivered to hardware collecting device delays
Area is rushed to be shared.With reference to shown in Fig. 2 and Fig. 4, in the present embodiment, after hardware collecting device 2 is to addition identification information
Network data encapsulation is packaged as PCAP data packets, and the core buffer for being delivered to hardware collecting device 2 is shared.
If S34. network data lacks, to network data interpolation data identification information, and packing is encapsulated.With reference to Fig. 2 and
Shown in Fig. 5, in the present embodiment, if network data lacks, hardware collecting device 2 is directly to network data interpolation data mark
Know information, wherein, data identification information includes device-identification information and time identifier information.Device-identification information is for marking
The status information of the good working condition for the network data that hardware collecting device 2 receives, for example, network data missing (i.e. imperfect)
The network data after identification is then identified as miss status in device-identification information.Time identifier is for hardware to be marked to acquire
Equipment 2 receives the receiving time information of network data.
S35., the core buffer that the network data of interpolation data identification information is transported to hardware collecting device is total to
It enjoys.With reference to shown in Fig. 2 and Fig. 5, in the present embodiment, hardware collecting device 2 seals the network data after addition identification information
Dress is packaged as PCAP data packets and is delivered to the core buffer of hardware collecting device 2 being shared.
With reference to shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, a kind of embodiment according to the present invention, in S4 steps, data processing is set
The data that standby 1 acquisition buffer area is shared.In the present embodiment, the core buffer of hardware collecting device 2 is set with data processing
Standby 1 memory is mapped, the network number that the core buffer that data processing equipment 1 directly acquires hardware collecting device 2 is shared
According to.
According to the present invention, hardware collecting device 2 judges network data in data acquisition, so as to effectively
And the judgement of integrality quickly carried out to network data.The integrality of network data is judged by hardware collecting device 2
And addition identification information, it can fully ensure that the complete of the network data that data processing equipment 1 is obtained by identification information
Property.Therefore, the efficiency and integrality of network data acquisition process, number are ensure that by the acquisition of hardware collecting device 2 network data
It is data processing operation to provide data storage according to processing equipment 1.Cpu performance in data processing equipment 1 can effectively be utilized.
According to the present invention, the core buffer of the memory and hardware collecting device 2 of data processing equipment 1 is mapped, and is kept away
The CPU for having exempted from data processing equipment 1 interrupts the acquisition for participating in network data, and then avoid data processing equipment 1 due to CPU processing
Data-bag lost caused by ability is overloaded.The rate for making network data acquisition by hardware collecting device 2 becomes faster, and ensure that acquisition
Performance.Therefore in the design of highspeed network applications system, it is not necessary to consider that the CPU of data processing equipment 1 participates in network data and adopts
The situation of collection can effectively reduce the design difficulty and uncertainty of whole system.
The above is only enumerating for the concrete scheme of the present invention, should for the equipment and structure of wherein not detailed description
When being interpreted as that the existing common apparatus in this field and universal method is taken to be practiced.
The foregoing is merely the schemes of the present invention, are not intended to restrict the invention, for the technology of this field
For personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiies
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of acquisition methods of network data, including：
S1. network data is acquired from Ethernet by hardware collecting device；
S2. the good working condition of the network data is judged；
S3. according to the good working condition of the network data, network data addition identification information and encapsulation are packaged, and carry out
It is shared.
2. acquisition methods according to claim 1, which is characterized in that according to the good working condition of the network data, to institute
The step of stating network data addition identification information and encapsulation packing includes：
If S31. the network data is complete, Screening Treatment is carried out to the network data；
S32. to the network data interpolation data identification information after Screening Treatment；
S33. the network data of interpolation data identification information is encapsulated and be packaged, and be delivered to the interior of the hardware collecting device
Buffering area is deposited to be shared.
3. acquisition methods according to claim 2, which is characterized in that according to the good working condition of the network data, to institute
It is further included in the step of stating network data addition identification information and encapsulation packing：
If the S34. network data missing, to the network data interpolation data identification information, and encapsulates packing；
S35. the network data of interpolation data identification information is transported to the core buffer of the hardware collecting device into
Row is shared.
4. acquisition methods according to claim 3, which is characterized in that the data identification information includes device-identification information
With time identifier information, wherein, the device-identification information be used for mark the network data good working condition status information,
The time identifier is used to mark the receiving time information of the network data.
5. acquisition methods according to claim 2, which is characterized in that if the network data is complete, to the network
The step of data progress Screening Treatment, includes：
S311. the type of the network data is identified in the hardware collecting device；
S312. the transport protocol of the network data is identified in the hardware collecting device；
S313. the hardware collecting device carries out Screening Treatment according to the filter condition of setting to the network data.
6. acquisition methods according to claim 5, which is characterized in that the hardware collecting device is according to the filtering rod of setting
In the step of part carries out Screening Treatment to the network data, the filter condition is according to the type of the network data and described
The transport protocol of network data is configured.
7. the acquisition methods according to Claims 2 or 3, which is characterized in that the core buffer of the hardware collecting device
It is mapped with the memory of data processing equipment, the memory that the data processing equipment directly acquires the hardware collecting device delays
Rush the network data that area is shared.
8. acquisition methods according to claim 7, which is characterized in that the hardware collecting device is set with the data processing
The transmission of the network data is carried out between standby using pci bus.
The hardware collecting device is equipped with ethernet physical layer data-interface, and the hardware collecting device passes through the Ethernet object
Manage the network data in the layer data interface acquisition Ethernet.
9. acquisition methods according to claim 2, which is characterized in that by the network data of interpolation data identification information
In the step of encapsulation is packaged, the network data, which is packaged, is packaged as PCAP data packets.
10. acquisition methods according to claim 3, which is characterized in that if the network data lacks, to the network
Data interpolation data identification information, and the step of encapsulate packing in, the network data, which is packaged, is packaged as PCAP data packets.
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