CN1287309A - Universal protocol testing method for embedded system - Google Patents
Universal protocol testing method for embedded system Download PDFInfo
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- CN1287309A CN1287309A CN 99117193 CN99117193A CN1287309A CN 1287309 A CN1287309 A CN 1287309A CN 99117193 CN99117193 CN 99117193 CN 99117193 A CN99117193 A CN 99117193A CN 1287309 A CN1287309 A CN 1287309A
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Abstract
The present invention relates to the test technology for communication protocol. The test platform includes protocol interface module, abnormal control module, routing control module, transparent data passage module and performance parameter counter module. The data package of the tested communication protocol to simulate the abnormal condition and connection condition of practical link via abnormal control and routing control is transmitted and finally counted, analyzed and calculated in the counter module, with the results being stored in corresponding parameter counting text for analysis. The present invention provides powerful support for analyzing and positioning failures.
Description
The present invention relates to computer technology, specifically, relate to the computer testing technology field.
At present, the complexity of the communications protocol in the embedded real time system is more and more higher, and the testing cost of communications protocol shared ratio in the total system development cost is also increasing.This is because communications protocol treatment scheme under normal circumstances is a part of code seldom, and the abnormal conditions of overwhelming majority processing branch seldom obtains carrying out in the actual physical environment, want agreement is compared test completely, adopt the mode of long-play program to come indentification protocol whether stable usually.The shortcoming of this method: one, cost height, along with the continuous increase of hardware reliability, the probability of happening of various abnormal conditions is also more and more lower, must problem could be come out the time that system's operation is fully long; Two, under experiment condition, the kind that abnormal conditions take place is limited, and the abundant surely processing branch to various abnormal conditions that differs tests; Three, fault is difficult to reproduce, and has increased the difficulty of debugging modification fault greatly; Four, when the communication network topology structure more complicated, the environment of exploitation, debugging and test also becomes very complicated, and it is difficult more that the discovery of communication failure, location, reproduction and analysis become.For this reason, there are many business softwares that the function of protocol procedure being carried out analog simulation is provided, as GEODE, SDT etc., can simulate the input and output of agreement and carry out statistical study, but they all can only simulate based on the agreement of SDL (Specification and Description Language) state machine strictness, that simulates is actuated to message, the actual conditions of analog physical link more can not be simulated the communication situation under various communication network topology structures realistically.
Purpose of the present invention proposes a kind of various communications protocol analog detection methods in the embedded system that are common to exactly for addressing the above problem.
Puppy parc method of testing at embedded system provided by the invention is achieved in that a test platform is set that this platform comprises protocol interface module, unusual control module, routing module control, transparent data channel module and performance parameter statistical module; Tested communication protocol module is connected with puppy parc test platform of the present invention by the protocol interface module of a standard; In puppy parc test platform inside, the abnormal conditions of being simulated physical link by the packet of tested communication protocol module generation by unusual control and routing module control are connected situation with link, transfer out by the transparent transmission channel module at last; Add up, analyze and calculate by described performance parameter statistical module, and the result is placed in the relevant parameter statistics file is further analyzed.
According to method provided by the invention, it is characterized in that of the generation of unusual control module according to the content control abnormal behaviour of unusual configuration file.The unusual configuration file content of unusual control module basis is simulated the abnormal conditions in the physical link, comprises following content:
1), produces control on Abnormal mode: a, transmit leg control, promptly unusually in the transmit leg generation; B, take over party's control promptly produce unusually the take over party;
2), Exception Type:
A, error code: controlled variable has the bit error rate, maximum number of bit errors continuously, maximum error code figure place;
B, lose: controlled variable has Loss Rate, and maximum is lost byte number continuously;
C, time-delay and shake: controlled variable has maximum delay, minimum time-delay, and the time-delay rate, time-delay rate parameter also can be used for controlling the baud rate of link;
D, repetition: be mainly used in test multirouting situation;
E, out-of-sequence: be mainly used in test multirouting situation.
According to method provided by the invention, it is characterized in that unusual control module is performed such the unusual simulation of physical link: unusual control module reads correlation parameter from unusual configuration file when starting, decide after transmit leg control or the take over party's control according to the control mode in the unusual configuration file, receive the message bag of upper strata or lower floor, call random number then and produce function, determine whether to produce corresponding unusual according to the probability of unusual generation.When wherein calling random number and producing function, be that the probability according to current unusual generation determines whether this produces unusual and unusual number of times.
Wherein, unusual generation can be in order to method down:
Error code: error code byte negate sign indicating number;
Lose: lose byte and be not sent out;
Time-delay and shake: delayed time message deposit in buffer zone, get a random value, send again after this time of delaying time then from the interval of maximum delay and minimum time-delay.
According to method provided by the invention, it is characterized in that and can realize simulation by routing module control to various communication network topology structures, do not influence the routing algorithm in the tested communications protocol simultaneously.
Routing module control is realized the control to many transparent data links by the simulation of routing configuration file realization to various communication network topology structures, and the socket interface is realized in the transparent data chain route TCP/IP protocol suite, and agreement adopts Transmission Control Protocol.Veneer has different device numbers to different communication ports under the actual conditions.And it is in the puppy parc test platform that TCP link and device number is corresponding to one by one to realize the control to route, thereby simulated in the actual conditions physical connection situation of communication port between each veneer, and tested to not influence of the routing table in the communications protocol, realized independence and the integrality of tested communications protocol in test like this.Because communications protocol finally sends data and realizes by device driver, the data that the invocation facility driver need provide the device number of communication link and need to send, so device number is a sign of distinguishing different communication links, here communication link is the TCP link, as long as realize the one-to-one relationship of device number and communication link, the device driver interface of matching standard, be the interface that protocol interface module provides tested communication protocol module, can tested communications protocol do not changed like this.
According to method provided by the invention, it is characterized in that can be by the anti-unusual parameters such as ability of efficient, protocol processes handling capacity and protocol processes of relevant protocol processes during tested communications protocol operation under the performance parametric statistics module records, and add up and handle, be convenient to agreement is analyzed, find out the defective of tested communications protocol.
The protocol parameter of being surveyed comprises and being not limited to: a, agreement handling capacity: the maximum number that agreement can handle packet in the unit interval; The repeating transmission number of times of each packet, loss situation, time delay situation in b, the agreement; The distribution situation of c, message time-delay: fixed length message scenario, the influence that time-delay distributes to message of different length message; The time-delay of d, protocol processes and link transmission time-delay proportion in the message time-delay; E, protocol anomaly processing expenditure: the repeating transmission number of times of agreement and the unusual number of times of unusual control module record are compared statistics; The abnormal restoring time of f, agreement: after once injecting mistake by unusual control module, regularly add up the abnormal restoring situation of agreement; G, protocol packing efficient.
According to method provided by the invention, it is characterized in that after the protocol interface of having stipulated a standard, can realizing independence and portability to tested communications protocol.
Use method provided by the invention, can under the common PC LAN environment, simulate in the actual physics environment contingent various unusual, agreement is compared strict comprehensively test, by analysis, can provide strong support for the raising and the faults analysis location of protocol efficiency to test result.
Method provided by the invention is a kind of more common protocol emulation means of testing.Utilize method of the present invention can significantly reduce in the protocol test process, overcome the limitation of actual physics environment, reduce testing cost, improve testing efficiency the dependence of actual physics environment.By the various abnormal conditions that take place under the abundant simulation actual physics environment, and simulate various communication network topology structures, agreement is compared completely test, and on this basis the performance and the fault of agreement are added up, for troubleshooting of faults and improvement in performance provide support.Simultaneously, utilize this puppy parc test platform before hardware is finished, on PC, to develop test, can accelerate the development progress of project like this communications protocol.
Below by specific embodiment and in conjunction with the accompanying drawings to the description in further detail of the present invention's do.
Fig. 1 is the one-piece construction synoptic diagram of this protocol test platform;
Fig. 2 is the environment configurations among the embodiment;
Fig. 3 is SDH software systems hierarchical structures.
Be presented under the concrete environment below in conjunction with Fig. 1, Fig. 2, how adopt the inventive method realization to test.Among Fig. 2, each PC goes up puppy parc test platform of operation, and tested protocol module and puppy parc test platform move as a program compilation, and routing configuration file is determined communication network topology structure, and unusual configuration file is determined the abnormal conditions of link.The concrete course of work is as follows: 1, after tested communication protocol module 109 and puppy parc test platform are as a complete program run, the puppy parc test platform is by reading the configuration data of routing configuration file 107 and unusual configuration file 106, thereby finishes the initialization of puppy parc test platform.As: come routing configuration table in the initialization internal memory by reading data in the routing configuration file; 2, the packet of tested communication protocol module 109 generations at first enters the puppy parc test platform through protocol interface module 101, and protocol interface is the interface of a standard, has realized the independence and the integrality of tested communications protocol; 3, packet enters unusual control module 102 then, is transmit leg control according to the unusual control mode that produces of the decision of the data in the unusual configuration file 106, or take over party's control.If transmit leg control, then packet carries out corresponding link immediately and simulates its treatment scheme unusually: being to carry out error code earlier to handle, is loss of data then, is delay variation, repetition and out-of-sequence at last.Control these unusual data that produce also by unusual configuration file 106 decisions.The realization of error code and loss of data is that each the data based certain probability in the packet is handled accordingly, and the realization of error code is adopted former data negate sign indicating number; And so-called loss of data is removed these data exactly from packet; Delay variation control realizes it being that packet that postpones and the packet that does not postpone are carried out separate processes, adopt an independent thread to come the packet of processing delay, the packet that does not postpone is then directly transferred to lower module, is promptly handled by routing module control 103.When carrying out delay variation control, also correspondingly produced the repetition of packet and out-of-sequence; If the unusual control mode that produces is that the take over party controls, 102 of abnormality processing modules are not carried out link to packet and are simulated unusually, and packet is given routing module control 103 and handled.4, packet enters routing module control 103, and the effect of routing module control 103 is that the device number of selecting when sending according to communications protocol is chosen corresponding transparent data path, and packet is sent to selected transparent data path.Each device number and transparent data path are one to one, article one, the transparent data path is exactly a TCP link, a communication apparatus in the corresponding actual veneer, tested communication protocol module 109 need be specified a communication apparatus when sending data, generally represent with device number.Routing module control is exactly by the one-to-one relationship with device number and TCP transparent data path, thereby realizes the independence and the integrality of tested communications protocol.In the routing configuration table,, corresponding TCP control data is arranged all, for example TCP connection mode (as: client's pattern or server mode), IP address and port numbers for each device number.In puppy parc test platform initialization procedure, set up corresponding TCP link respectively by these data that read in the routing configuration file.5, packet is after through transparent data channel module 104, and the side of being received receives, and then handles by above opposite order.That is: packet after the side of being received receives, is given unusual control module 102 after through transparent data channel module 104, whether carries out the abnormal conditions simulation according to the unusual control mode decision in the unusual configuration file again.If take over party control is then carried out the abnormal conditions simulation according to the parameter in the unusual configuration file 106, physical simulation process routing configuration table is as described in the process 3; If not take over party's control, then packet is not done the abnormal conditions simulation.6, through the packet of abnormality processing module, issue tested communication protocol module by protocol interface.7, tested communication protocol module 109 is in tested process, anti-unusual some parameters such as ability of efficient, protocol processes handling capacity and the protocol processes of relevant protocol processes were added up and are handled when performance parameter statistical module 105 was noted the operation of tested communications protocol, be convenient to agreement is analyzed, find out the weak point of agreement.
The basis of all these is added up each packet exactly, as retransmit number of times, loss situation and time delay situation, when each packets need application internal memory of packing, the data field that all has a special use for each packet, comprising retransmitting number of times, losing data such as sign and time stamp, retransmit number of times and lose the sign zero clearing when the application internal memory, time stamp is then stamped the time at that time.When tested communications protocol is retransmitted, then increase and retransmit number of times; When packet is lost by communications protocol, note and lose sign; When internal memory is given back by calculating time and the difference of the time stamp on the packet transmission delay that just can obtain packet at that time.The data of all packets combine, and are recorded in the parametric statistics file 108, just can be further processed.And for the statistics of these parameters of each packet, be that the present invention realizes by add some sampling functions in the source program of tested communication protocol module.
In unusual control module, it is kind, number of times and the time that recording exceptional produces; The quantity of data packets that record sends and receives from each transparent data path in the routing module control; Record data not in the transparent data channel module; In the performance parameter statistical module,, can analyze the performance of the tested communications protocol under different unusual analog case, be used for the improvement of communications protocol according to above data.The performance of relevant tested communications protocol mainly comprises the following content, can also increase as required.The handling capacity of a, agreement: can calculate the maximum number of handle packet in the unit interval, the i.e. handling capacity of agreement according to the transceive data amount in every transparent data path in a period of time; The repeating transmission number of times of each packet, loss situation, time delay situation in b, the agreement: these data fields according to the special use in each packet are added up; The distribution situation of c, various packet time delays: according to the time delay of each packet, and the performance of analyzing communications protocol in conjunction with situation (the reliability situation of the speed of link, link etc.) and each length of data package of physical link; The expense of d, communications protocol abnormality processing: according to the number of times and the time of the unusual generation of noting, and repeating transmission number of times, time delay and the loss situation of each packet, analyze the expense of communications protocol to abnormality processing, while from handling unusual process to normal operation, can analyze agreement for a recovery situation of handling unusually according to agreement; The packing efficient of e, agreement:,, compare of the influence of the different packaging methods of agreement, thereby select best packaging method to agreement by the different statistical study of above communications protocol performance at the packaging method of different communications protocol for packet.
SDH (Synchronous Digital Hierarchy) transmission system system software structure is as shown in Figure 3: be divided into three layers: network management system SMN (the SDH Management Network) software, network element master control borad NS (Network Equipment Supervisor) software and veneer MCU (the Micro Controller Unit) software that comprise the Operation and Maintenance platform.Network management system SMN provides the function of NE management layer, can be simultaneously to the management of a plurality of SDH subnets; Network element master control borad NS finishes the management of equipment in the network element; Veneer MCU finishes the management of hardware in the veneer.
Wherein: Qsdh is the interface of SMN and NS plate;
ECC is the communication interface between the NS plate;
The S mouth is the communication interface of NS plate and MCU veneer.The master control borad of each network element (NS plate) has the master control borad (NS plate) of each network element of 4 DCC (Data Communication Channel) to have 4 DCC (Data Communication Channel) mouthfuls, and each NS plate has been realized an ECC (Embedded ControlChannel) communication network by the connection of DCC mouth.Because the topological structure more complicated of SDH networking, the topological structure that causes the ECC path is more complicated also, the ECC communication module is exactly to realize that each network element carries out mutual communication by the ECC path, comprise the loading module of routing table, the transceiver module of packet and the forwarding module of packet etc., be characterized in the network topology structure complexity, communications protocol also has certain singularity.Before hardware environment is not also finished, use puppy parc test platform provided by the invention that the ECC communication module is developed, debugging and test, its environment configurations as shown in Figure 2, each PC represents a network element, realize various network topologies by routing configuration file, carry out the abnormal conditions configuration by unusual configuration file, operation puppy parc test platform on every PC, the ECC communication module is tested, can analyze the ECC communications protocol by the data statistics file, for the raising of protocol efficiency and faults analysis location provide strong support, accelerated the development progress of project simultaneously.
Claims (7)
1, a kind of puppy parc method of testing at embedded system, it is characterized in that: a test platform is set, and this platform comprises protocol interface module (101), unusual control module (102), routing module control (103), transparent data channel module (104) and performance parameter statistical module (105); Tested communication protocol module (109) at first is connected with described test platform by protocol interface module (101), unusual control module (102) is connected situation with the abnormal conditions of routing module control (103) simulation physical link with link, and do as one likes can parametric statistics module (105) add up, analyze and calculate.
2, as claimed in claim 1 at embedded system the puppy parc method of testing, it is characterized in that: described unusual control module (102) is according to the generation of the content control abnormal behaviour of unusual configuration file (106); 1), produce the control on Abnormal mode unusual control module (102) is simulated abnormal conditions in the physical link according to unusual configuration file (106) content, and described abnormal conditions comprise:; 2), Exception Type: a, error code: controlled variable has the bit error rate, maximum number of bit errors continuously, maximum error code figure place; B, lose: controlled variable has Loss Rate, and maximum is lost byte number continuously; C, time-delay and shake: controlled variable has maximum delay, minimum time-delay, and the time-delay rate, time-delay rate parameter also can be used for controlling the baud rate of link; D, repetition: be mainly used in test multirouting situation; E, out-of-sequence: be mainly used in test multirouting situation.
3, as claimed in claim 1 or 2 at embedded system the puppy parc method of testing, it is characterized in that: described unusual control module (102) is performed such the unusual simulation of physical link: unusual control module (102) reads correlation parameter from unusual configuration file (106) when starting, decide transmit leg control or take over party's control according to the control mode in the unusual configuration file (106), receive the message bag of upper strata or lower floor then, call random number and produce function, determine whether to produce corresponding unusual according to the probability of unusual generation; When wherein calling random number and producing function, be that the probability according to current unusual generation determines whether this produces unusual and unusual number of times.
4, as claimed in claim 1 at embedded system the puppy parc method of testing, it is characterized in that: realize simulation various communication network topology structures by described routing module control (103); Promptly in the puppy parc test platform that TCP link and device number is corresponding to one by one realizing the control to route, thus simulated in the actual conditions physical connection situation of communication port between each veneer.
5, the puppy parc method of testing at embedded system as claimed in claim 1, it is characterized in that: the anti-unusual parameters such as ability of efficient, protocol processes handling capacity and the protocol processes of relevant protocol processes when noting the operation of tested communications protocol by described performance parameter statistical module (105), and add up and handle.
6, as claim 1,2,4,5 one of any described puppy parc method of testings at embedded system, it is characterized in that: described performance parameter statistical module (105) recording parameters is to realize by add some sampling functions in the source program of tested communication protocol module (109).
7, the puppy parc method of testing at embedded system as claimed in claim 1, it is characterized in that: the interface that described protocol interface module (101) provides tested communication protocol module (109) is the protocol interface of a standard.
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| CNB991171934A CN1164065C (en) | 1999-11-04 | 1999-11-04 | Universal protocol testing method for embedded system |
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| CNB991171934A CN1164065C (en) | 1999-11-04 | 1999-11-04 | Universal protocol testing method for embedded system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1301629C (en) * | 2003-08-15 | 2007-02-21 | 中兴通讯股份有限公司 | Analogue request position information system and method |
| CN1310150C (en) * | 2002-11-21 | 2007-04-11 | 中兴通讯股份有限公司 | Embedded software test method |
| CN1312585C (en) * | 2003-10-08 | 2007-04-25 | 东南大学 | Embedding rotary mechanical intelligent state monitoring and failure diagnostic device |
| CN100365590C (en) * | 2005-01-31 | 2008-01-30 | 浙江大学 | Debugging method for applied programm in simulator of embedded system |
| CN100367722C (en) * | 2004-12-10 | 2008-02-06 | 中兴通讯股份有限公司 | System for testing unification of communication protocol |
| CN100419710C (en) * | 2005-07-07 | 2008-09-17 | 联发科技股份有限公司 | Exception analysis methods and systems for embedded system |
| US8392766B2 (en) | 2009-07-02 | 2013-03-05 | Silicon Motion Inc. | Operational method of a controller of a flash memory, and associated memory device and controller thereof |
| CN103116168A (en) * | 2013-02-01 | 2013-05-22 | 珠海德百祺科技有限公司 | Anomaly detecting and processing method and device for navigational positioning devices |
| CN102033791B (en) * | 2009-09-25 | 2014-04-30 | 慧荣科技股份有限公司 | Method for improving verification efficiency of controller of flash memory, memory device and controller |
| CN107239387A (en) * | 2017-05-25 | 2017-10-10 | 深圳市金立通信设备有限公司 | A kind of data exception detection method and terminal |
| CN113985750A (en) * | 2021-09-30 | 2022-01-28 | 中国兵器工业集团第二一四研究所苏州研发中心 | Interface circuit board level integrated circuit board |
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- 1999-11-04 CN CNB991171934A patent/CN1164065C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1310150C (en) * | 2002-11-21 | 2007-04-11 | 中兴通讯股份有限公司 | Embedded software test method |
| CN1301629C (en) * | 2003-08-15 | 2007-02-21 | 中兴通讯股份有限公司 | Analogue request position information system and method |
| CN1312585C (en) * | 2003-10-08 | 2007-04-25 | 东南大学 | Embedding rotary mechanical intelligent state monitoring and failure diagnostic device |
| CN100367722C (en) * | 2004-12-10 | 2008-02-06 | 中兴通讯股份有限公司 | System for testing unification of communication protocol |
| CN100365590C (en) * | 2005-01-31 | 2008-01-30 | 浙江大学 | Debugging method for applied programm in simulator of embedded system |
| CN100419710C (en) * | 2005-07-07 | 2008-09-17 | 联发科技股份有限公司 | Exception analysis methods and systems for embedded system |
| US8392766B2 (en) | 2009-07-02 | 2013-03-05 | Silicon Motion Inc. | Operational method of a controller of a flash memory, and associated memory device and controller thereof |
| CN102033791B (en) * | 2009-09-25 | 2014-04-30 | 慧荣科技股份有限公司 | Method for improving verification efficiency of controller of flash memory, memory device and controller |
| CN103116168A (en) * | 2013-02-01 | 2013-05-22 | 珠海德百祺科技有限公司 | Anomaly detecting and processing method and device for navigational positioning devices |
| CN107239387A (en) * | 2017-05-25 | 2017-10-10 | 深圳市金立通信设备有限公司 | A kind of data exception detection method and terminal |
| CN113985750A (en) * | 2021-09-30 | 2022-01-28 | 中国兵器工业集团第二一四研究所苏州研发中心 | Interface circuit board level integrated circuit board |
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