CN101577681A - Flow control method, device and system - Google Patents
Flow control method, device and system Download PDFInfo
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- CN101577681A CN101577681A CNA2009102032684A CN200910203268A CN101577681A CN 101577681 A CN101577681 A CN 101577681A CN A2009102032684 A CNA2009102032684 A CN A2009102032684A CN 200910203268 A CN200910203268 A CN 200910203268A CN 101577681 A CN101577681 A CN 101577681A
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Abstract
The embodiment of the invention discloses a flow control method, comprising the following steps: a physical interface card counts flow information and reports the counted flow information to a control logic module which is capable of setting different logic functions; the control logic module generates flow control strategy based on the flow information according to preset logic functions and issues the flow control strategy to a flow management module; the flow management module limits corresponding flow of the physical interface card according to the flow control strategy. The embodiment of the invention also provides corresponding devices and systems. As the technical proposal of the invention adopts the control logic module to receive the flow information sent by the physical interface card and develops the flow control strategy according to the flow information, the technical proposal can alter the rule for developing the flow control strategy by changing the logic functions in the control logic module, thus facilitating the expansion of flow control modes.
Description
Technical field
The present invention relates to communication technical field, be specifically related to a kind of flow control methods, device and system.
Background technology
Along with the continuous development of the communication technology,, or need control flow for other reasons such as guarantee service quality in actual applications because the load capacity of communication system is limited.Current flow control mode is controlled flow when flow information is indicated flow greater than predetermined threshold value mainly according to flow information, and this is a kind of main implementation that data communication field service quality guarantees.
Prior art is mainly finished flow control by the traffic management module, the traffic management module is at first obtained the congestion state (idle congested or super congested three kinds of states) that physical interface card reports, when congestion state is the free time, the traffic management module does not limit the flow on the physical interface card, when congestion state when being congested traffic management module controls physical interface card with flow restriction under preset value, when congestion state be super when congested traffic management module controls physical interface card suspend flow.
In research and practice process to prior art, the present inventor finds that traffic management module controls function is fixing in the prior art can not change, and extensibility is not high, and the traffic management module that need more renew during expansion, causes cost to increase.
Summary of the invention
The embodiment of the invention provides a kind of flow control methods and corresponding device thereof and system.
A kind of flow control methods comprises:
Physical interface card statistic flow information, and described statistic flow information reported control logic module, described control logic module can be provided with different logic functions;
Described control logic module generates the flow control strategy according to described flow information according to default logic function, and issues described flow control strategy to the traffic management module;
Described traffic management module is according to the corresponding flow of the described physical interface card of described flow control policy constraints.
A kind of control logic module comprises:
Receiving element is used to receive the flow information that physical interface card reports;
Processing unit is used for generating the flow control strategy according to described flow information according to default logic function;
Transmitting element is used to send described flow control strategy to the traffic management module, so that described traffic management module is according to the corresponding flow of described flow control policy constraints.
A kind of traffic management module comprises:
Receiving element is used to receive the flow control strategy that control logic module sends;
Administrative unit is used for according to described flow control policy constraints physical interface card corresponding flow.
The embodiment of the invention adopts a control logic module to receive the flow information that physical interface card sends, and according to described flow information formulation flow control strategy, can change the rule of formulating the flow control strategy by the logic function in the change control logic module, thereby make things convenient for the expansion of flow control mode.
Description of drawings
Fig. 1 is the signaling process figure of an embodiment of a kind of flow control methods of the present invention;
Fig. 2 is the structure chart of an embodiment of a kind of control logic module of the present invention;
Fig. 3 is the structure chart of an embodiment of a kind of traffic management module of the present invention;
Fig. 4 is the structure chart of an embodiment of a kind of flow control system of the present invention.
Embodiment
The embodiment of the invention provides a kind of flow control methods, can realize the formulation of different flow control strategies by different logic functions is set, and realizes the expansion to flow control mode.The embodiment of the invention also provides corresponding device thereof and system.Below be elaborated respectively.
A kind of flow control methods comprises:
Physical interface card statistic flow information, and described statistic flow information reported control logic module, described control logic module can be provided with different logic functions;
Control logic module generates the flow control strategy according to described flow information according to default logic function, and issues described flow control strategy to the traffic management module;
The traffic management module is according to the corresponding flow of described flow control policy constraints physical interface card.
Described flow control strategy can be to limit at total flow, or limits at the shared flow of a certain business; After the traffic management module receives the flow control strategy, the corresponding flow of needs restriction is controlled according to the indication of flow control strategy; For example the flow that software takies is downloaded in flow control strategy indication restriction, and then the traffic management module only limits and downloads the flow that software takies.
Described generation flow control strategy can have following three kinds of modes:
A, when described flow information indication flow during more than or equal to the first flow threshold value that presets, formulate the first flow control strategy that indication suspends current low priority traffice flow.
B, preset two flow thresholds, when described flow information indication flow more than or equal to the first flow threshold value that presets, and during less than second flow threshold that presets, formulate the first flow control strategy that suspends current low priority traffice flow;
When described flow information indication flow during more than or equal to second flow threshold that presets, formulate the restriction total flow to the second flow control strategy below the preset control value, described preset control value is one to be lower than the numerical value of the physical interface card total flow upper limit.Described first flow threshold value is less than second flow threshold.
C, preset three flow thresholds, when described flow information indication flow more than or equal to the first flow threshold value that presets, and during less than default second flow threshold, formulate and reduce by the three flow control strategy of total flow to the first preset flow controlling value;
When described flow information indication flow more than or equal to second flow threshold that presets, and during less than default the 3rd flow threshold, formulate and reduce by the four flow control strategy of total flow to the second preset flow controlling value;
Indicate flow more than or equal to the 3rd flow threshold that presets when described flow information, formulate the 5th flow control strategy that reduces total flow to the three preset flow controlling values.Described first flow threshold value is less than second flow threshold, and described second flow threshold is less than the 3rd flow threshold; The first flow controlling value is greater than the second flow control value, and the second flow control value is greater than the 3rd flow control value.
Embodiment one, see also the signaling process figure of Fig. 1 for an embodiment of a kind of flow control methods of the present invention;
Step 101, physical interface card statistic flow information, and described statistic flow information reported control logic module;
Physical interface card is according to port disposal ability and present flow rate size, statistics generates the flow information that can represent when the front port congestion state through the total flow of self, and reporting flow information to arrive control logic module, flow information can be at the total flow through same port.
Further, do not get rid of physical interface card and increase can be meticulousr under the situation of function statistic flow information, separate service statistics (adding up) for example, uplink traffic statistics, downlink traffic statistics etc. at the flow that a certain class business takies; When physical interface card in more detail during statistic flow information, the flow control strategy in later stage can be more accurately at the flow of a certain type.
Step 102, control logic module are formulated the flow control strategy according to described flow information according to the logic of propositions function after receiving flow information;
In control logic module, can set in advance certain logic function, for example: a plurality of flow thresholds at total flow are set (for example: the first flow threshold value and second flow threshold, the first flow threshold value is less than second flow threshold), when flow information indication total flow is equal to or greater than the first flow threshold value, and during less than second flow threshold, the flow control strategy of a certain business of logic function pilot block system fixed limit system that presets in the control logic module (can the lower service traffics of limited limit priority) flow; And when flow information was indicated total flow more than or equal to second flow threshold, the logic function that presets in the control logic module was formulated the flow control strategy of restriction total flow.The flow control strategy can comprise a flow control value, or a flow control percentage is as Control Parameter, described flow control value can be a definite numerical value and less than the upper limit of the total flow that can carry on the physical interface card, for example when the maximum stream flow that can carry on the physical interface card is 100, described second flow threshold is 90, described flow control value is 70, when the flow information indication total flow that reports when physical interface card is 92, the flow control strategy that control logic module is formulated with 70 as controlling value.
Further, the logic function that is preset in the control logic module can be following mode also: three threshold values are set, be respectively A＜B＜C, and preset three controlling values respectively at total flow, be respectively X＞Y＞Z, the value of supposing in the flow information indication flow is N, and as N during more than or equal to A, formulating at the total flow controlling value is the flow control strategy of X; When N more than or equal to A, and during less than B, formulating at the total flow controlling value is the flow control strategy of X; When N more than or equal to B, and during less than C, formulating at the total flow controlling value is the flow control strategy of Y; As N during more than or equal to C, formulating at the total flow controlling value is the flow control strategy of Z.
The embodiment of the invention adopts the control logic module that different logic functions can be set, because default logic function can be changed by other input equipments or central processing unit, so can formulate different flow control strategies at different flow informations.
Because the default logic function of control logic module can be changed, and what formulate also can be multiple and flow control strategy that specific aim is very strong, so the flow control strategy that adopts the embodiment of the invention to provide possesses very strong flexible expansion ability.
The flow control strategy can limit total flow by pointer, also can be to limit at a certain service traffics; For example: when a certain office application business is carried out, point-to-point (P2P, peer to peer) software operation is simultaneously also used, and the two is through same port, and the total flow of port surpasses threshold value and need limit; Flow control this moment strategy can just limit at the shared flow of P2P software.
Step 103, control logic module transmitted traffic control strategy are to the traffic management module;
To the traffic management module, concrete described management channels can be peripheral component interconnection (PCI, a Peripheral ComponentInterconnection) controller to control logic module by management channels transmitted traffic control strategy.
Step 104, traffic management module are according to flow control policy constraints physical interface card corresponding flow.
After the traffic management module receives the flow control strategy, can corresponding flow be limited according to the flow control parameter of flow control strategy, for example the flow control that the business of lowest priority is taken when flow control strategy indication current shared flow 70% the time, the traffic management module is controlled the minimum professional shared flow of physical interface card corresponding priorities, and is controlled at below 70% of present flow rate.During limited flow, can adjust flow according to the Control Parameter that the flow control strategy carries; For example flow control strategy pointer limits the flow that P2P software uses, and the flow restriction that P2P software is used present flow rate 50% or be limited to the target flow controlling value, the flow that the traffic management module takies during with the P2P software application according to the indication of flow control strategy is adjusted; When should the flow control strategy limiting at the total flow through port, the traffic management module can limit the lower service traffics of priority, and restriction can be to suspend (when the flow control value is zero) or reduce its flow.
By the flow control strategy flow is controlled, can be realized the multi-level flow control that becomes more meticulous at various types of flows.
The embodiment of the invention adopts a control logic module that the Different Logic function can be set to receive the flow information that physical interface card sends, and according to described flow information formulation flow control strategy, can change the rule of formulating the flow control strategy by the logic function in the change control logic module, thereby make things convenient for the expansion of control mode.And because the flexibility of flow control strategy, can be so that the traffic management module realizes multi-level meticulous control to flow.
Embodiment two,
See also the structure chart of Fig. 2 for an embodiment of a kind of control logic module of the present invention;
Receiving element 201 is used to receive the flow information that physical interface card reports;
Concrete, the flow information that receiving element 201 receives can be the flow information that the total flow of passing through same port of physical interface card real-time statistics generates.
Further, processing unit 202 also comprises:
Formulate unit 2022, be used for formulating the flow control strategy of the current low priority traffice flow of indication time-out when described flow information indication flow during more than or equal to the first flow threshold value that presets;
Or,
When described flow information indication flow more than or equal to the first flow threshold value that presets, and during less than default second flow threshold, formulate the flow control strategy that indication suspends current low priority traffice flow;
When described flow information indication flow during, formulate the restriction total flow to the flow control strategy below the preset control value more than or equal to second flow threshold that presets; Wherein, described preset control value is one to be lower than the numerical value of the physical interface card total flow upper limit, and described first flow threshold value is less than second flow threshold;
Or,
When described flow information indication flow more than or equal to the first flow threshold value that presets, and during less than default second flow threshold, formulate the flow control strategy of indication restriction total flow to the first preset flow controlling value;
When described flow information indication flow more than or equal to second flow threshold that presets, and during less than default the 3rd flow threshold, formulate the flow control strategy of indication restriction total flow to the second preset flow controlling value;
Indicate flow more than or equal to the 3rd flow threshold that presets when described flow information, formulate the flow control strategy of indication restriction total flow to the three preset flow controlling values;
Wherein, described first flow threshold value is less than second flow threshold, and described second flow threshold is less than the 3rd flow threshold; Described first flow controlling value is greater than the second flow control value, and the described second flow control value is greater than the 3rd flow control value.
Control logic module is preset with certain logic function, and after receiving the flow information that physical interface card sends, if flow information indication present flow rate surpasses preset threshold value, 202 of processing units are formulated the flow control strategy according to logic function.Because default logic function can be changed by other input equipments or central processing unit, and default logic function also can be very complicated process, so can formulate different flow control strategies at different flow informations.
Transmitting element 203 is used for the transmitted traffic control strategy to the traffic management module, so that the traffic management module is according to the corresponding flow of flow control policy constraints.
The default logic function of control logic module in the embodiment of the invention can be changed, and what formulate also can be multiple and flow control strategy that specific aim is very strong, only need carry out new logic function setting when needing to realize other control modes and get final product, possess very strong flexible expansion ability control logic module.
Embodiment three,
See also the structure chart of Fig. 3 for an embodiment of a kind of traffic management module of the present invention;
Receiving element 301 is used to receive the flow control strategy that control logic module sends;
After receiving element 301 received the flow control strategy, the flow of 302 pairs of flow control strategy indications of administrative unit limited.For example flow control strategy pointer limits the flow that P2P software uses, and administrative unit 302 can be suspended the P2P business; When the flow control strategy limited at the total flow through port, administrative unit 302 can limit (restriction can be to suspend or reduce its flow) to the lower service traffics of priority, normally uses to guarantee higher priority business.
Embodiment four,
See also the structure chart of Fig. 4 for an embodiment of a kind of flow control system of the present invention;
Because the default logic functions of control logic module 402 can be changed, and what formulate also can be multiple and flow control strategy that specific aim is very strong, possesses very strong flexible expansion ability.
The flow control strategy can limit at total flow, also can be to limit at a certain service traffics; For example: when a certain office application business is carried out, P2P software operation is simultaneously also used, and the two is through same port, and the total flow of port surpasses threshold value and need limit; Flow control this moment strategy can just limit at the shared flow of P2P software.
After the traffic management module received the flow control strategy, the flow that the flow control strategy is indicated limited.For example flow control strategy pointer limits the flow that P2P software uses, and the traffic management module can be suspended the P2P business; When the flow control strategy limited at the total flow through port, the traffic management module can limit (restriction can be to suspend or reduce its flow) to the lower service traffics of priority.
By the flow control strategy flow is controlled, can be realized the multi-level flow control that becomes more meticulous at various types of flows.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of the foregoing description is to instruct relevant hardware to finish by program, this program can be stored in the computer-readable recording medium, storage medium can comprise: read-only storage (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), disk or CD etc.
More than flow control methods that the embodiment of the invention provided and device and system are described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (12)
1, a kind of flow control methods is characterized in that, comprising:
Physical interface card statistic flow information, and described statistic flow information reported control logic module, described control logic module can be provided with different logic functions;
Described control logic module generates the flow control strategy according to described flow information according to default logic function, and issues described flow control strategy to the traffic management module;
Described traffic management module is according to the corresponding flow of the described physical interface card of described flow control policy constraints.
2, flow control methods according to claim 1 is characterized in that, describedly generates the flow control strategy according to flow information according to default logic function and comprises:
When described flow information indication flow during, formulate the first flow control strategy that indication suspends current low priority traffice flow more than or equal to the first flow threshold value that presets.
3, flow control methods according to claim 1 is characterized in that, describedly generates the flow control strategy according to flow information according to default logic function and comprises:
When described flow information indication flow more than or equal to the first flow threshold value that presets, and during less than second flow threshold that presets, formulate the first flow control strategy that indication suspends current low priority traffice flow;
When described flow information indication flow during more than or equal to second flow threshold that presets, formulate indication restriction total flow to the second flow control strategy below the preset control value, described preset control value is one to be lower than the numerical value of the physical interface card total flow upper limit;
Described first flow threshold value is less than second flow threshold.
4, flow control methods according to claim 1 is characterized in that, describedly generates the flow control strategy according to described flow information according to default logic function and comprises:
When described flow information indication flow more than or equal to the first flow threshold value that presets, and during less than default second flow threshold, formulate the three flow control strategy of indication restriction total flow to the first preset flow controlling value;
When described flow information indication flow more than or equal to second flow threshold that presets, and during less than default the 3rd flow threshold, formulate the four flow control strategy of indication restriction total flow to the second preset flow controlling value;
Indicate flow more than or equal to the 3rd flow threshold that presets when described flow information, formulate the 5th flow control strategy of indication restriction total flow to the three preset flow controlling values;
Described first flow threshold value is less than second flow threshold, and described second flow threshold is less than the 3rd flow threshold; Described first flow controlling value is greater than the second flow control value, and the described second flow control value is greater than the 3rd flow control value.
According to the arbitrary described flow control methods of claim 3 to 4, it is characterized in that 5, described traffic management module comprises according to the corresponding flow of the described physical interface card of described flow control policy constraints:
According to flow control strategy indication, the control physical interface card with corresponding flow restriction below the flow control value.
According to claim 1 or 5 arbitrary described flow control methods, it is characterized in that 6, described control physical interface card limits corresponding flow and comprises:
The control physical interface card is according to the priority flow of suspending operation from low to high.
7, a kind of control logic module is characterized in that, comprising:
Receiving element is used to receive the flow information that physical interface card reports;
Processing unit is used for generating the flow control strategy according to described flow information according to default logic function;
Transmitting element is used to send described flow control strategy to the traffic management module, so that described traffic management module is according to the corresponding flow of described flow control policy constraints.
8, control logic module according to claim 7 is characterized in that, described processing unit also comprises:
The contrast unit is used to contrast the flow of described flow information indication and the flow threshold that presets;
Formulate the unit, be used for formulating the first flow control strategy of the current low priority traffice flow of indication time-out when described flow information indication flow during more than or equal to the first flow threshold value that presets;
Or,
When described flow information indication flow more than or equal to the first flow threshold value that presets, and during less than default second flow threshold, formulate the first flow control strategy that suspends the low priority traffice flow;
When described flow information indication flow during, formulate the restriction total flow to the second flow control strategy below the preset control value more than or equal to second flow threshold that presets;
Or,
When described flow information indication flow more than or equal to the first flow threshold value that presets, and during less than default second flow threshold, formulate and reduce by the three flow control strategy of total flow to the first preset flow controlling value;
When described flow information indication flow more than or equal to second flow threshold that presets, and during less than default the 3rd flow threshold, formulate and reduce by the four flow control strategy of total flow to the second preset flow controlling value;
Indicate flow more than or equal to the 3rd flow threshold that presets when described flow information, formulate the flow control strategy that reduces total flow to the three preset flow controlling values;
Described first flow threshold value is less than second flow threshold, and described second flow threshold is less than the 3rd flow threshold; Described first flow controlling value greater than the second flow control value greater than the 3rd flow control value.
9, a kind of traffic management module is characterized in that, comprising:
Receiving element is used to receive the flow control strategy that control logic module sends;
Administrative unit is used for according to described flow control policy constraints physical interface card corresponding flow.
10, a kind of flow control system is characterized in that, comprising:
Physical interface card is used for statistic flow information, and described flow information is reported to control logic module;
Control logic module is used to receive described flow information, generates the flow control strategy according to described flow information according to default logic function, sends described flow control strategy to the traffic management module;
The traffic management module is used to receive described flow control strategy, and according to the corresponding flow of the described physical interface card of described flow control policy constraints.
11, flow control system according to claim 10 is characterized in that, described control logic module is claim 7 or 8 described control logic module.
12, flow control system according to claim 10 is characterized in that, described traffic management module is the described traffic management module of claim 9.
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