CN106775930A - A kind of acquisition methods and device of network interface status information - Google Patents
A kind of acquisition methods and device of network interface status information Download PDFInfo
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- CN106775930A CN106775930A CN201611066803.2A CN201611066803A CN106775930A CN 106775930 A CN106775930 A CN 106775930A CN 201611066803 A CN201611066803 A CN 201611066803A CN 106775930 A CN106775930 A CN 106775930A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
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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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/45579—I/O management, e.g. providing access to device drivers or storage
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/45583—Memory management, e.g. access or allocation
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a kind of acquisition methods and device of network interface status information, method includes:Apply for one piece of memory block of free time in vxworks operating system, and the internal memory of application is converted into by memDevCreate methods by pseudo- memory device;Pseudo- memory device is opened to obtain file handle using I/O interface, and standard output is directed to file handle by way of task is redirected;Ifconfig functions are called to be write to pseudo- memory device with by the output of ifconfig functions;Required network interface status information is searched in pseudo- memory device.As can be seen here, this method obtains the output result of ifconfig by way of pseudo- memory device and task redirection, it is not necessary to analyze protocol stack code, simple and easy to apply;In addition, used function is all vxworks operating system general-purpose interface function, and it is portable good, can be applicable on the version of all vxworks operating systems.
Description
Technical field
The present invention relates to field of computer technology, the more particularly to a kind of acquisition methods and device of network interface status information.
Background technology
Vxworks operating system is a kind of embedded real-time behaviour that WindRiver companies of the U.S. design and develop in nineteen eighty-three
Make system (RTOS), be the key components of embedded-development environment, the operating system have good sustainable development capacity,
High performance kernel and the User Exploitation environment of close friend, one seat is occupied in embedded real-time operating system field.
Network interface information under vxworks operating system is stored in network protocol stack the inside, and network protocol stack code is very
Complicated.Therefore, the transmitting-receiving message amount of network interface obtains difficult under vxworks operating system, and its network interface transmitting-receiving statistical information is hidden
The very deep place of plant system.At present, the network interface monitoring method under vxworks operating system is exactly research agreement stack code, right
Each vxworks operating system version is adapted to, and is found protocol stack the inside and is deposited traffic statistics, the data knot of link states
Structure, and preserve.
Due to needing to study network protocol stack code, structure, function declaration which includes many protocol stacks etc., generation
The code extremely complex, indigestion of meeting, error is also easy to if insufficient to protocol stack code understanding;In addition, VxWorks operation system
Network interface protocol stack code under system lives through repeatedly big change, therefore the generation under some vxworks operating system version
Code can not be applied to other versions, portable poor.
As can be seen here, the versatility for how realizing obtaining network interface status information under vxworks operating system is this area
Technical staff's problem demanding prompt solution.
The content of the invention
It is an object of the invention to provide a kind of acquisition methods and device of network interface status information, for
Realize obtaining the versatility of network interface status information under vxworks operating system.
In order to solve the above technical problems, the present invention provides a kind of acquisition methods of network interface status information, including:
Apply for one piece of memory block of free time in vxworks operating system, and by memDevCreate methods application
The internal memory be converted into pseudo- memory device;
The pseudo- memory device is opened using I/O interface to obtain file handle, and mark by way of task is redirected
Quasi- output directional is to the file handle;
Ifconfig functions are called to be write to the pseudo- memory device with by the output of ifconfig functions;
Required network interface status information is searched in the pseudo- memory device.
Preferably, also include:Recovery tasks redirect with will printout returned to from the pseudo- memory device orientation it is described
Standard output.
Preferably, especially by the network interface status information needed for strstr function lookups.
Preferably, the network interface status information specifically includes the transmitting-receiving message statistical information and link status informations of network interface.
Preferably, the memory space of the memory block is 500 bytes.
In order to solve the above technical problems, the present invention provides a kind of acquisition device of network interface status information, including:
Converting unit, for applying for one piece of memory block of free time in vxworks operating system, and passes through
The internal memory of application is converted into pseudo- memory device by memDevCreate methods;
Task redirects unit, for opening the pseudo- memory device to obtain file handle using I/O interface, and passes through
Standard output is directed to the file handle by the mode that task is redirected;
Writing unit, is set so that the output of ifconfig functions is write to the pseudo- internal memory for calling ifconfig functions
It is standby;
Searching unit, for searching required network interface status information in the pseudo- memory device.
Preferably, the task redirects unit, is additionally operable to recovery tasks and redirects to print out from the puppet
Deposit equipment orientation and return to the standard output.
Preferably, the searching unit is especially by the network interface status information needed for strstr function lookups.
Preferably, the network interface status information specifically includes the transmitting-receiving message statistical information and link status informations of network interface.
Preferably, the memory space of the memory block is 500 bytes.
The acquisition methods and device of network interface status information provided by the present invention, the method are included in VxWorks operation system
Apply for one piece of memory block of free time in system, and the internal memory of application be converted into by memDevCreate methods by pseudo- internal memory to set
It is standby;The pseudo- memory device is opened using I/O interface to obtain file handle, and it is by way of task is redirected that standard is defeated
Go out and be directed to the file handle;Call ifconfig functions and set so that the output of ifconfig functions is write to the pseudo- internal memory
It is standby;Required network interface status information is searched in the pseudo- memory device.As can be seen here, this method passes through pseudo- memory device and appoints
Business redirection mode obtains the output result of ifconfig, it is not necessary to analyze protocol stack code, simple and easy to apply;In addition, used
Function be all vxworks operating system general-purpose interface function, it is portable good, can be applicable to all vxworks operating systems
Version on.
Brief description of the drawings
In order to illustrate more clearly the embodiments of the present invention, the accompanying drawing to be used needed for embodiment will be done simply below
Introduce, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ordinary skill people
For member, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of flow chart of the acquisition methods of network interface status information provided in an embodiment of the present invention;
Fig. 2 is the flow chart of the acquisition methods of another network interface status information provided in an embodiment of the present invention;
Fig. 3 is a kind of structure chart of the acquisition device of network interface status information provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on this
Embodiment in invention, those of ordinary skill in the art are not under the premise of creative work is made, and what is obtained is every other
Embodiment, belongs to the scope of the present invention.
Core of the invention is to provide a kind of acquisition methods and device of network interface status information, for being operated in VxWorks
Realize obtaining the versatility of network interface status information under system.
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Fig. 1 is a kind of flow chart of the acquisition methods of network interface status information provided in an embodiment of the present invention.As shown in figure 1,
Including:
S10:Apply for one piece of memory block of free time in vxworks operating system, and by memDevCreate method handles
The internal memory of application is converted into pseudo- memory device.
It is understood that memory block must be idle in this step, i.e., the memory block of other data is not stored, with
Prevent that confusion occurs with the network interface status information being subsequently stored in.In specific implementation, the memory block of application is directly operation, no
File system I/O interface can be used, is that memory block is converted into an internal memory by memDevCreate methods to set in this step
It is standby, such that it is able to use the functions such as the I/O interface of file system, such as open, read to be written and read operation.By after conversion
Pseudo- memory device can be opened just as file.
S11:Pseudo- memory device is opened using I/O interface to obtain file handle, and mark by way of task is redirected
Quasi- output directional is to file handle.
Pseudo- memory device after due to conversion can be opened just as file, therefore, after being opened by I/O interface just
Corresponding file handle is obtained.In this step, standard output is directed to file handle by way of task is redirected.
Redirection refer to order or executable program standard output or standard error output be re-introduced into it is specified
In file.So, order or the output of program is not just appeared on serial ports (being to print to serial ports under vxworks operating system),
And be written in specified file, i.e., in the corresponding file handle of puppet memory device.
It refers to that the output for only redirecting the task, the i.e. task does not print to serial ports that task is redirected, and is written into specifying
File, this refers in writing the corresponding file handle of pseudo- memory device.
S12:Ifconfig functions are called to be write to pseudo- memory device with by the output of ifconfig functions.
Due to the mode for having used task to redirect, therefore the output of other tasks still can print to serial ports, i.e. not shadow
Ring other tasks, that is to say, that the output of other tasks will not write pseudo- memory device, other will not be write toward puppet memory device
The output of ifocnfig orders is only had in content, pseudo- memory device.
Such as, ifconfig orders are input under vxworks operating system, then will export a pile word in ifconfig
On serial ports, serial ports can't see output to symbol string after redirection, because output can write the file the inside specified, opening file can
To see the output of ifconfig orders, pseudo- memory device is opened it is seen that ifconfig orders in the present embodiment
Output.
S13:Required network interface status information is searched in pseudo- memory device.
Because the corresponding output of ifconfig functions is exactly network interface status information, therefore just stored in pseudo- memory device complete
The network interface status information in portion.User can according to the actual requirements, the network interface status information required for searching, for example, especially by
Network interface status information needed for strstr function lookups.
Preferably implementation method, network interface status information specifically includes the transmitting-receiving message statistical information and link shapes of network interface
State information.
It is understood that network interface status information in addition to above-mentioned two kinds for enumerating can also comprising other information,
Merely just a kind of specific application scenarios.
Preferably implementation method, the memory space of memory block is 500 bytes.
In specific implementation, the memory space of memory block needs to determine according to the quantity of network interface that the quantity of i.e. network interface is more,
The network interface status information for then including will be more, then the memory space for needing will be bigger.Under normal circumstances, if network interface is 1
Individual or 2, then the memory space of memory block has 500 bytes can just to meet requirement.
The acquisition methods of the network interface status information that the present embodiment is provided, are included in one piece of application in vxworks operating system
Idle memory block, and the internal memory of application is converted into by memDevCreate methods by pseudo- memory device;Connect using IO
Mouthful open the pseudo- memory device to obtain file handle, and standard output is directed to by way of task is redirected described
File handle;Ifconfig functions are called to be write to the pseudo- memory device with by the output of ifconfig functions;In the puppet
Required network interface status information is searched in memory device.As can be seen here, this method passes through pseudo- memory device and task redirection side
Formula obtains the output result of ifconfig, it is not necessary to analyze protocol stack code, simple and easy to apply;In addition, used function is all
Vxworks operating system general-purpose interface function, it is portable good, can be applicable on the version of all vxworks operating systems.
Fig. 2 is the flow chart of the acquisition methods of another network interface status information provided in an embodiment of the present invention.Such as Fig. 2 institutes
Show, preferably implementation method, also include:
S20:Recovery tasks are redirected and return to standard output from pseudo- memory device orientation with by printout.
It is extensive after the network interface status information needed for finding in the present embodiment in order to not influence the carrying out of other tasks
Multiple task is redirected and causes that follow-up printout returns to standard output from pseudo- memory device orientation, i.e. order or configuration processor is aobvious
Show in serial ports, without output to pseudo- memory device.
Fig. 3 is a kind of structure chart of the acquisition device of network interface status information provided in an embodiment of the present invention.As shown in figure 3,
Including:
Converting unit 10, for applying for one piece of memory block of free time in vxworks operating system, and passes through
The internal memory of application is converted into pseudo- memory device by memDevCreate methods.
It is understood that memory block must be idle, i.e., do not store the memory block of other data, with prevent with it is rear
Renew into network interface status information occur it is chaotic.In specific implementation, the memory block of application is directly operation, it is impossible to use text
Part System I/O interfaces, converting unit 10 is that memory block is converted into a memory device by memDevCreate methods, so that
The functions such as the I/O interface of file system, such as open, read can be used to be written and read operation.Set by the pseudo- internal memory after conversion
It is standby to be opened just as file.
Task redirects unit 11, for opening pseudo- memory device to obtain file handle using I/O interface, and by appointing
Standard output is directed to file handle by the mode for being engaged in redirecting.
Pseudo- memory device after due to conversion can be opened just as file, therefore, after being opened by I/O interface just
Corresponding file handle is obtained.In this step, standard output is directed to file handle by way of task is redirected.
Redirection refer to order or executable program standard output or standard error output be re-introduced into it is specified
In file.So, order or the output of program is not just appeared on serial ports (being to print to serial ports under vxworks operating system),
And be written in specified file, i.e., in the corresponding file handle of puppet memory device.
It refers to that the output for only redirecting the task, the i.e. task does not print to serial ports that task is redirected, and is written into specifying
File, this refers in writing the corresponding file handle of pseudo- memory device.
Writing unit 12, is set so that the output of ifconfig functions is write to pseudo- internal memory for calling ifconfig functions
It is standby.
Due to the mode for having used task to redirect, therefore the output of other tasks still can print to serial ports, i.e. not shadow
Ring other tasks, that is to say, that the output of other tasks will not write pseudo- memory device, other will not be write toward puppet memory device
The output of ifocnfig orders is only had in content, pseudo- memory device.
Such as, ifconfig orders are input under vxworks operating system, then will export a pile word in ifconfig
On serial ports, serial ports can't see output to symbol string after redirection, because output can write the file the inside specified, opening file can
To see the output of ifconfig orders, pseudo- memory device is opened it is seen that ifconfig orders in the present embodiment
Output.
Searching unit 13, for searching required network interface status information in pseudo- memory device.
Because the corresponding output of ifconfig functions is exactly network interface status information, therefore just stored in pseudo- memory device complete
The network interface status information in portion.User can according to the actual requirements, the network interface status information required for searching, for example, especially by
Network interface status information needed for strstr function lookups.It is understood that being searched simply wherein by strstr functions
A kind of implementation method, represent only have a kind of this mode.
Preferably implementation method, network interface status information specifically includes the transmitting-receiving message statistical information and link shapes of network interface
State information.
It is understood that network interface status information in addition to above-mentioned two kinds for enumerating can also comprising other information,
Merely just a kind of specific application scenarios.
Preferably implementation method, the memory space of memory block is 500 bytes.
In specific implementation, the memory space of memory block needs to determine according to the quantity of network interface that the quantity of i.e. network interface is more,
The network interface status information for then including will be more, then the memory space for needing will be bigger.Under normal circumstances, if network interface is 1
Individual or 2, then the memory space of memory block has 500 bytes can just to meet requirement.
The acquisition device of the network interface status information that the present embodiment is provided, is included in one piece of application in vxworks operating system
Idle memory block, and the internal memory of application is converted into by memDevCreate methods by pseudo- memory device;Connect using IO
Mouthful open the pseudo- memory device to obtain file handle, and standard output is directed to by way of task is redirected described
File handle;Ifconfig functions are called to be write to the pseudo- memory device with by the output of ifconfig functions;In the puppet
Required network interface status information is searched in memory device.As can be seen here, the present apparatus passes through pseudo- memory device and task redirection side
Formula obtains the output result of ifconfig, it is not necessary to analyze protocol stack code, simple and easy to apply;In addition, used function is all
Vxworks operating system general-purpose interface function, it is portable good, can be applicable on the version of all vxworks operating systems.
Preferably implementation method, task redirection unit 11, are additionally operable to recovery tasks and redirect to print out
Standard output is returned to from pseudo- memory device orientation.
Because the embodiment of device part is mutually corresponding with the embodiment of method part, therefore the embodiment of device part please
Referring to the description of the embodiment of method part, wouldn't repeat here.
The acquisition methods and device to network interface status information provided by the present invention have carried out detailed Jie above
Continue.Each embodiment is described by the way of progressive in specification, and what each embodiment was stressed is and it
The difference of his embodiment, between each embodiment identical similar portion mutually referring to.For being filled disclosed in embodiment
For putting, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is referring to method part
Illustrate.It should be pointed out that for those skilled in the art, not departing from the premise of the principle of the invention
Under, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into the protection of the claims in the present invention
In the range of.
Professional further appreciates that, with reference to the unit of each example of the embodiments described herein description
And algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software, generally describes the composition and step of each example according to function in the above description.These
Function is performed with hardware or software mode actually, depending on the application-specific and design constraint of technical scheme.Specialty
Technical staff can realize described function to each specific application using distinct methods, but this realization should not
Think beyond the scope of this invention.
The step of method or algorithm for being described with reference to the embodiments described herein, directly can be held with hardware, processor
Capable software module, or the two combination is implemented.Software module can be placed in random access memory (RAM), internal memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In field in known any other form of storage medium.
Claims (10)
1. a kind of acquisition methods of network interface status information, it is characterised in that including:
Apply for one piece of memory block of free time in vxworks operating system, and by memDevCreate methods the institute for applying
State internal memory and be converted into pseudo- memory device;
The pseudo- memory device is opened using I/O interface to obtain file handle, and it is by way of task is redirected that standard is defeated
Go out and be directed to the file handle;
Ifconfig functions are called to be write to the pseudo- memory device with by the output of ifconfig functions;
Required network interface status information is searched in the pseudo- memory device.
2. acquisition methods of network interface status information according to claim 1, it is characterised in that also include:Recovery tasks weight
Orientation returns to the standard output with by printout from the pseudo- memory device orientation.
3. acquisition methods of network interface status information according to claim 1, it is characterised in that especially by strstr functions
Network interface status information needed for searching.
4. acquisition methods of network interface status information according to claim 1, it is characterised in that the network interface status information tool
Body includes the transmitting-receiving message statistical information and link status informations of network interface.
5. acquisition methods of network interface status information according to claim 1, it is characterised in that the storage of the memory block is empty
Between be 500 bytes.
6. a kind of acquisition device of network interface status information, it is characterised in that including:
Converting unit, for applying for one piece of memory block of free time in vxworks operating system, and by memDevCreate side
The internal memory of application is converted into pseudo- memory device by method;
Task redirects unit, for opening the pseudo- memory device to obtain file handle using I/O interface, and by task
Standard output is directed to the file handle by the mode of redirection;
Writing unit, for calling ifconfig functions to be write to the pseudo- memory device with by the output of ifconfig functions;
Searching unit, for searching required network interface status information in the pseudo- memory device.
7. the acquisition device of network interface status information according to claim 6, it is characterised in that the task redirects single
Unit, is additionally operable to recovery tasks redirection and returns to the standard output from the pseudo- memory device orientation with by printout.
8. the acquisition device of network interface status information according to claim 6, it is characterised in that the searching unit is specifically led to
Network interface status information needed for crossing strstr function lookups.
9. the acquisition device of network interface status information according to claim 6, it is characterised in that the network interface status information tool
Body includes the transmitting-receiving message statistical information and link status informations of network interface.
10. the acquisition device of network interface status information according to claim 6, it is characterised in that the storage of the memory block
Space is 500 bytes.
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Cited By (1)
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