CN106358267A - Method and system for detecting AP by user process - Google Patents
Method and system for detecting AP by user process Download PDFInfo
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- CN106358267A CN106358267A CN201610726571.2A CN201610726571A CN106358267A CN 106358267 A CN106358267 A CN 106358267A CN 201610726571 A CN201610726571 A CN 201610726571A CN 106358267 A CN106358267 A CN 106358267A
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- 238000000034 method Methods 0.000 title claims abstract description 87
- 230000008569 process Effects 0.000 title claims abstract description 70
- 238000000605 extraction Methods 0.000 claims description 7
- 230000002123 temporal effect Effects 0.000 claims description 6
- 240000002853 Nelumbo nucifera Species 0.000 claims 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims 1
- 230000006870 function Effects 0.000 description 9
- 230000032683 aging Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000000284 extract Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
-
- 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 method and a system for detecting an AP by a user process. The system kernel obtains the AP information from the received beacon message information, preprocesses the acquired AP information, constructs the socket message according to the AP information, and sends the socket message to the user process. The user process, through extracting the AP information from the socket message, updates the storage unit, and the storage unit selects the hash chain list according to priority. The system enables the user process to search and compare the storage units with AP information, and the kernel no longer maintains the storage unit, thus the stability, maintainability and performance of the system are enhanced.
Description
Technical field
The invention belongs to running Optimization field and in particular to a kind of by consumer process detect ap method and system.
Background technology
It is frequently encountered the interference of adnexa other ap, at this moment ap can open when ap (access point) networking, operation
Monitor pattern, by receiving the beacon message that other ap send over, obtains the information of all ap nearby, network management
Member, by checking these ap information, is found illegal ap or is configured by modification, find bypassing method.
Ap scan function is ap common function, when ap runs appearance exception, may receive adnexa other ap's
Interference, manager checks the information of all ap of adnexa by ap scan function, finds out abnormal ap or illegal ap, or by configuring handss
Section evades these interference.At present, ap scanning is realized in linux kernel, and kernel need to safeguard an ap scan table, and consumer process need to be determined
When obtain all ap information from kernel, inefficiency, kernel all ap information of scanning of maintenance, when ap quantity is relatively more,
Beacon message amount is huge, and kernel should parse these messages, safeguards these ap information again, easily causes kernel unstable
Fixed, once Kernel Panic, whole system will be unable to use.Ap scan function is realized in kernel, and kernel passes through to parse beacon report
Literary composition, safeguards an ap scan table, and consumer process timing obtains this ap scan table from kernel, and consumer process and kernel tasks will be visited
Ask this ap scan table, safeguard complicated, inefficiency, system is unstable.
Content of the invention:
In order to overcome the defect of above-mentioned background technology, the present invention provides a kind of method by consumer process detection ap and is
System, improves system stability and operational efficiency.
The technical scheme being adopted in order to solve the above-mentioned technical problem present invention is:
A kind of method detecting ap by consumer process, builds consumer process, by system kernel from the beacon report receiving
Ap information is obtained in civilian information, according to ap information structuring socket message, and socket message is sent to consumer process；With
Family process is according to extraction ap information updating memory element from socket message.
It is preferred that after system kernel constructs socket message, by socket packet storage in buffer unit, when slow
When socket message amount in memory cell reaches default peak load, the socket message in memory element is sent to use
Family process.
It is preferred that socket message includes: the ap information number that comprises in message header, message information, the ssid of ap information
Value, the mac address of ap information, the timestamp of the frequency range of ap information, the channel of ap information and ap information.
It is preferred that consumer process refers to according to extraction ap information updating memory element from socket message: traversal storage
Unit searches whether and the ap address information identical ap node being extracted, and if so, then updates the ap temporal information of ap node,
If it is not, then increasing ap node in the memory unit；Ap address information includes the mac address of ap information, and ap temporal information includes ap
The timestamp of information.
It is preferred that consumer process timing travels through memory element, check the timestamp of each ap node, when timestamp and currently
When difference between time exceedes preset range, delete this ap node from memory element.
It is preferred that the storage form of memory element includes hash chained list.
The present invention also provides a kind of system being detected ap by consumer process, including system kernel and consumer process:
System kernel includes beacon message receiver module, pretreatment module and socket message sending module, beacon
Message receiver module is used for receiving beacon message, and pretreatment module is used for obtaining ap information from beacon message and generating certainly
The socket message of definition, socket message sending module is used for sending socket message to consumer process；
Consumer process includes the socket message receiver module for receiving socket message, and for according to socket report
Literary composition updates the memory element update module of memory element.
It is preferred that socket message sending module also includes buffer unit and load control unit, buffer unit is used for depositing
Storage socket message, load control unit be used for judge the socket message being stored in buffer unit whether reach default
Big load, if so, then socket message sending module sends the socket message in buffer unit.
It is preferred that pretreatment module includes socket message signal generating unit, for generating socket message by predetermined format,
Socket message includes: the ap information number that comprises in message header, message information, the ssid value of ap information, the mac ground of ap information
Location, the timestamp of the frequency range of ap information, the channel of ap information and ap information.
It is preferred that memory element update module includes the first Traversal Unit, ap information updating unit and ap node increases list
Unit；
First Traversal Unit is used for traveling through memory element, and find out with extracted ap information there is same address information
Ap node, as ap node to be updated；
Ap information updating unit, for by the update of time stamp of ap node to be updated by time in extraction ap information
Stamp；
Ap node adding unit, is deposited for not finding the ap information addition with same address information in the memory unit
Storage unit is as new ap node.
It is preferred that consumer process also includes memory element burn-in control module, chained list burn-in control module includes second time
Go through unit and ap knot removal unit；
Second Traversal Unit is used for traveling through memory element, and whether the difference finding out between timestamp and current time surpasses
Cross the ap node of preset range, as node to be deleted；
Ap knot removal unit, for deleting node to be deleted from memory element.
It is preferred that memory element includes hash chained list.
The beneficial effects of the present invention is: ap scan function is put into consumer process and realizes by the present invention, and kernel passes through to increase
Pretreatment module, carries out pretreatment to beacon message, and the ap information in beacon message is extracted, and construction one is made by oneself
The netlink message of justice, is sent to user's ap scan procedure and processes, and user's ap scan procedure will filter the ap information receiving, and leads to
Cross and search and compare the memory element having ap information, kernel no longer safeguards memory element, consumer process also without timing from
Kernel obtains ap scan table information, improves the stability of system, maintainable and systematic function.The present invention is in consumer process time
When going through memory element, as the address information of ap information, improve and search speed from based on mac address.Set memory element old
Change control function, memory element is traveled through by timing cycle, delete aging ap node.Memory element is preferably hash chained list can
To accelerate the efficiency that traversal is searched.The present invention passes through to create in user's ap scan procedure and preserves ap information memory cell, significantly
Reduce the complexity of system, improve stability and the maintainability of system.
Brief description
Fig. 1 is the flow chart of the embodiment of the present invention one；
Fig. 2 is the structural representation of the self-defined socket message information of the embodiment of the present invention one；
Fig. 3 is the flow chart of the embodiment of the present invention two；
Fig. 4 is the system structure diagram of the embodiment of the present invention four；
Fig. 5 is the structural representation of the embodiment of the present invention four memory element update module；
Fig. 6 is the structural representation of the embodiment of the present invention five socket message sending module；
Fig. 7 is that the consumer process of the embodiment of the present invention six adds the structural representation after memory element burn-in control module
Figure；
Fig. 8 is the structural representation of the embodiment of the present invention six memory element burn-in control module.
Specific embodiment
The present invention is described further with reference to the accompanying drawings and examples.
Embodiment one
A kind of method detecting ap by consumer process, as shown in figure 1, building consumer process, by system kernel from receiving
Beacon message information in obtain ap information, then according to ap information structuring socket message, and by socket message send to
Consumer process；Consumer process is according to extraction ap information updating memory element from socket message.
Consumer process refers to according to memory element described in extraction ap information updating from socket message: consumer process receives
Carry the socket message information of ap information, traversal memory element searches whether the address information phase with the ap information extracted
Same ap node, if so, then updates the ap temporal information of ap node, if it is not, then increasing ap node in the memory unit；Ap address
Information includes the mac address of ap information, and ap temporal information includes the timestamp of ap information.Memory element storage in the present embodiment
Form is hash chained list.
The present embodiment specifically comprises the following steps:
Step 1, system kernel receives beacon message information；
Step 2, system kernel carries out pretreatment to beacon message information, extracts the ap information wherein comprising；
Step 3, system kernel generates self-defining socket message information according to the ap information that step 2 is extracted；
Step 4, system kernel sends socket message information to consumer process by sockets interface；
Step 5, consumer process receives socket message information, and extracts ap information；
Step 6, consumer process travels through memory element, searches whether the address information identical with the ap information extracted
Ap node, if so, then enters step 7, if it is not, then entering step 8；Address information described in the present embodiment is mac address；
Step 7, updates the timestamp with the address information identical ap node of ap information being extracted；
Step 8, the ap being extracted information is added memory element as new ap node.
In the present embodiment, socket message includes: the ap information number that comprises in message header, message information, ap information
Ssid value, the mac address of ap information, the timestamp of the frequency range of ap information, the channel of ap information and ap information.The present embodiment is made by oneself
The netlink message format of justice is as shown in Figure 2, comprising:
Netlink message header: netlink message header 16 byte of standard
Num: the ap information number 1 byte num maximum that this message comprises is defined as 15
Ssid: receive ssid value 32 byte of ap
Mac: receive mac address 6 byte of ap
Frequency range: receive the frequency range value of ap, 2.4g or 5g 1 byte
Channel: receive channel value 1 byte of ap
Supplier's feature: receive No. sn 32 bytes of ap
Timestamp: record receives time 4 byte of ap information.
Memory element in the present embodiment, using the mac address information of ap information as key, optimizes storage mode, improves
Lookup speed.
Embodiment two, the present embodiment increased the function of socket packet buffer control, tool on the basis of embodiment one
Say body:
After system kernel constructs socket message, by socket packet storage in buffer unit, work as buffer unit
In socket message amount when reaching default peak load, the socket message in memory element is sent to enter to user
Journey.
Specifically comprise the following steps:
Step 1, system kernel receives beacon message information；
Step 2, system kernel carries out pretreatment to beacon message information, extracts the ap information wherein comprising；
Step 3, system kernel generates self-defining socket message information according to the ap information that step 2 is extracted；
Step 4, socket message information is stored in buffer unit by system kernel；
Step 5, system kernel judge the socket message information quantity in described buffer unit whether exceed default
Big load num, if so, then enters step 6, if it is not, then return to step 1 to continue to accept beacon message information；
Step 6, system kernel sends socket message information to consumer process by sockets interface；
Step 7, consumer process receives socket message information, and extracts ap information；
Step 8, consumer process travels through memory element, searches whether the address information identical with the ap information extracted
Ap node, if so, then enters step 9, if it is not, then entering step 10；Address information described in the present embodiment is mac address；
Step 9, updates the timestamp with the address information identical ap node of ap information being extracted；
Step 10, the ap being extracted information is added memory element as new ap node.
Embodiment three, the present embodiment increased memory element Aging control function on the basis of implementing two, specifically:
Consumer process also timing traversal memory element, checks the timestamp of each ap node, when timestamp and current time
Between difference when exceeding preset range, delete this ap node from memory element.
In the present embodiment, consumer process traveled through memory element once every one minute, difference between timestamp and current time
Preset range be difference between 2 minutes, namely the timestamp when certain ap node and current time more than 2 minutes when, will
It is as aging ap knot removal.
Above-described embodiment one is both preferably hash chained list to the memory element of three kinds of embodiment.
Example IV
A kind of system being detected ap by consumer process, as shown in figure 4, including system kernel and consumer process:
System kernel includes beacon message receiver module, pretreatment module and socket message sending module, beacon
Message receiver module is used for receiving beacon message, and pretreatment module is used for obtaining ap information from beacon message and generating certainly
The socket message of definition, socket message sending module is used for sending socket message to consumer process；
Consumer process includes the socket message receiver module for receiving socket message, and for according to socket report
Literary composition updates the memory element update module of memory element.
Pretreatment module includes socket message signal generating unit, for generating socket message, socket by predetermined format
Message includes: the ap information number that comprises in message header, message information, the ssid value of ap information, the mac address of ap information, ap
The timestamp of the frequency range of information, the channel of ap information and ap information.
As shown in figure 5, memory element update module includes the first Traversal Unit, ap information updating unit and ap node increasing
Unit；
First Traversal Unit is used for traveling through memory element, and find out with extracted ap information there is same address information
Ap node, as ap node to be updated；
Ap information updating unit, for by the update of time stamp of ap node to be updated by time in extraction ap information
Stamp；
Ap node adding unit, is deposited for not finding the ap information addition with same address information in the memory unit
Storage unit is as new ap node.
Embodiment five, the present embodiment includes whole technology contents of example IV, and increased following characteristics:
As shown in fig. 6, socket message sending module also includes buffer unit and load control unit, buffer unit is used for
Storage socket message, load control unit is default for judging whether the socket message being stored in buffer unit reaches
Peak load, if so, then socket message sending module sends the socket message in buffer unit.
Embodiment six, the present embodiment includes whole technology contents of embodiment five, and increased following characteristics:
As shown in fig. 7, consumer process also includes memory element burn-in control module, as shown in figure 8, chained list Aging control mould
Block includes the second Traversal Unit and ap knot removal unit；
Second Traversal Unit is used for traveling through memory element, and whether the difference finding out between timestamp and current time surpasses
Cross the ap node of preset range, as node to be deleted；
Ap knot removal unit, for deleting node to be deleted from memory element.
In the present embodiment, consumer process traveled through memory element once every one minute, difference between timestamp and current time
Preset range be difference between 2 minutes, namely the timestamp when certain ap node and current time more than 2 minutes when, will
It is as aging ap knot removal.
The memory element to embodiment six for the above-described embodiment four is both preferably hash chained list.
It should be appreciated that for those of ordinary skills, can be improved according to the above description or be converted,
And all these modifications and variations all should belong to the protection domain of claims of the present invention.
Claims (12)
1. a kind of by consumer process detect ap method it is characterised in that: build consumer process, by system kernel from receiving
Ap information is obtained in beacon message information, according to described ap information structuring socket message, and described socket message is sent out
Deliver to described consumer process；Described consumer process is single according to extracting described ap information updating storage from described socket message
Unit.
2. according to claim 1 a kind of by consumer process detect ap method it is characterised in that: described system kernel structure
After producing described socket message, by described socket packet storage in described buffer unit, when in described buffer unit
Described socket message amount when reaching default peak load, the described socket message in described memory element is sent
To described consumer process.
3. according to claim 2 a kind of detect the method for ap it is characterised in that described socket message by consumer process
Including: the ap information number that comprises in message header, described message information, the ssid value of ap information, the mac address of ap information, ap
The timestamp of the frequency range of information, the channel of ap information and ap information.
4. according to claim 1 a kind of by consumer process detect ap method it is characterised in that described consumer process according to
Refer to according to extracting described ap information updating memory element from described socket message: travel through described memory element and searched whether
Ap address information identical ap node with being extracted, if so, then updates the ap temporal information of described ap node, if it is not, then existing
Increase described ap node in described memory element；Described ap address information includes the mac address of ap information, described ap temporal information
Timestamp including ap information.
5. according to claim 1 a kind of by consumer process detect ap method it is characterised in that: described consumer process is fixed
When travel through described memory element, check the timestamp of each ap node, the difference between described timestamp and current time surpass
When crossing preset range, delete this ap node from described memory element.
6. according to any one of claim 1-5 a kind of by consumer process detect ap method it is characterised in that: described deposit
The storage form of storage unit includes hash chained list.
7. a kind of by consumer process detect ap system, including system kernel and consumer process it is characterised in that:
Described system kernel includes beacon message receiver module, pretreatment module and socket message sending module, described
Beacon message receiver module is used for receiving beacon message, and described pretreatment module is used for obtaining from described beacon message
Ap information simultaneously generates self-defining socket message, and described socket message sending module is used for sending described socket message
To described consumer process；
Described consumer process includes the socket message receiver module for receiving described socket message, and for according to described
Socket message updates the described memory element update module of described memory element.
8. according to claim 7 a kind of by consumer process detect ap system it is characterised in that: described socket message
Sending module also includes buffer unit and load control unit, and described buffer unit is used for storing described socket message, described
Load control unit is used for judging whether the described socket message being stored in described buffer unit reaches default maximum lotus
Carry, if so, then described socket message sending module sends the described socket message in described buffer unit.
9. according to claim 7 a kind of by consumer process detect ap system it is characterised in that: described pretreatment module
Including socket message signal generating unit, for generating socket message by predetermined format, described socket message includes: message
Head, the ap information number comprising in described message information, the ssid value of ap information, the mac address of ap information, the frequency of ap information
The timestamp of section, the channel of ap information and ap information.
10. according to claim 7 a kind of by consumer process detect ap system it is characterised in that: described memory element
Update module includes the first Traversal Unit, ap information updating unit and ap node adding unit；
Described first Traversal Unit is used for traveling through described memory element, and find out with extracted ap information have identical address believe
The ap node of breath, as ap node to be updated；
Described ap information updating unit, for by the update of time stamp of ap node to be updated by time in extraction ap information
Stamp；
Described ap node adding unit, is added for not finding the ap information with same address information in described memory element
Enter described memory element as new ap node.
11. according to claim 7 a kind of by consumer process detect ap systems it is characterised in that: described consumer process
Also include described memory element burn-in control module, described chained list burn-in control module includes the second Traversal Unit and ap node is deleted
Except unit；
Described second Traversal Unit is used for traveling through described memory element, and the difference finding out between timestamp and current time is
The no ap node exceeding preset range, as node to be deleted；
Ap knot removal unit, for deleting described node to be deleted from described memory element.
12. according to any one of claim 6-11 a kind of by consumer process detect ap system it is characterised in that: described
Memory element includes hash chained list.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1567114A (en) * | 2003-07-09 | 2005-01-19 | 中国科学院沈阳自动化研究所 | Wireless local area network on-site bus network control station |
| CN104135399A (en) * | 2014-07-09 | 2014-11-05 | 国家电网公司 | Flow monitoring method based on wireless public network communication way for power distribution terminal |
| CN105848154A (en) * | 2016-06-07 | 2016-08-10 | 醴陵恒茂电子科技有限公司 | Method for carrying out wireless identity authentication based on RSSI ranging |
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- 2016-08-25 CN CN201610726571.2A patent/CN106358267B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1567114A (en) * | 2003-07-09 | 2005-01-19 | 中国科学院沈阳自动化研究所 | Wireless local area network on-site bus network control station |
| CN104135399A (en) * | 2014-07-09 | 2014-11-05 | 国家电网公司 | Flow monitoring method based on wireless public network communication way for power distribution terminal |
| CN105848154A (en) * | 2016-06-07 | 2016-08-10 | 醴陵恒茂电子科技有限公司 | Method for carrying out wireless identity authentication based on RSSI ranging |
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