CN102594680A - Message fragment processing system and processing method - Google Patents
Message fragment processing system and processing method Download PDFInfo
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- CN102594680A CN102594680A CN2012100344522A CN201210034452A CN102594680A CN 102594680 A CN102594680 A CN 102594680A CN 2012100344522 A CN2012100344522 A CN 2012100344522A CN 201210034452 A CN201210034452 A CN 201210034452A CN 102594680 A CN102594680 A CN 102594680A
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Abstract
The invention discloses a message fragment processing method, relates to the technical field of communication, and solves the problem that the traditional technology cannot satisfy the requirement of the high-efficiency forwarding under a condition that the communication device hardware difference exists. The key point of the technical scheme is as follows: the message fragment processing method comprises the steps of controlling a plane processing module to divide a message forwarding path and a forwarding stage, and forming a forwarding matrix; after the data plane processing module receives a message, finishing the link processing and the interface finding, and identifying the forwarding path; and using a processing function in each forwarding stage of the forwarding path in the forwarding matrix of a message receiving interface or a message sending interface to forward a message. In addition, the invention also provides a message fragment processing system which is suitable for forwarding the message quickly and effectively.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of message fragment treatment system and processing method.
Background technology
In the current society of communication technology high speed development, network has got into the every aspect of people's life, and various application and business datum are arranged on network, requires web-transporting device, forwarding unit and control appliance, and data are analysed in depth and handled; Support the IPv4 data flow like needs, the IPv6 data flow, the multiprotocol label switching (mpls) data flow supports access list to filter (ACL), supports the committed rate access control (CAR) of data flow, supports various QOS flow controls etc.Except enriching of data; Various access technologies, network technology and transmission technology also are a splendid legacy; Like needs support 10,000,000,000 ether (XGE) interface at a high speed, gigabit ether (GE) interface will be supported the E1 interface of low speed etc. simultaneously; Support two layers of exchange of message, also will support three layers of forwarding of message simultaneously.
Concerning router, how when supporting numerous functions, satisfying the demand of transmitting at a high speed is a challenging problem.In the prior art, the equipment that has promotes the complete machine performance through using network processing unit (NP), and the polycaryon processor that passes through that has improves disposal ability, and the dominant frequency of passing through the raising communication processor that has promotes forwarding performance; But, can not reach good gain to the lifting of complete machine performance only through improving the hardware handles ability.Reach good cost performance, need to optimize corresponding software flow, and traditional pass-through mode such as process exchange, quick exchange is transmitted fast to wait and has been not suitable for the present various hardware-accelerated system that has.
The router of senior middle school's low side can be different on hardware, has plenty of centralizedly, has plenty of distributed; The employing that has be monokaryon CPU, the employing multi-core CPU that has, what have has hardware-accelerated parts; What have does not have hardware-accelerated parts; The needs that have adopt AMP (asymmetric multiprocessor) technology, and the needs that have adopt SMP (symmetric multiprocessor) technology to reach better complete machine performance, how when adapting to various hardware differences; Improve forward efficiency, reaching optimum forwarding performance is exactly a problem.Therefore, be necessary to propose a kind of correlation process method that can improve the message forward efficiency.
Summary of the invention
Technical problem to be solved by this invention is: propose a kind of message fragment treatment system and processing method, can't adapt under the situation of communication equipment hardware differences in the solution conventional art, satisfy the problem of the efficient demand of transmitting.
The present invention solves the problems of the technologies described above the scheme that is adopted: a kind of message fragment treatment system comprises:
The control plane processing module, the generation that is used to transmit passage or forwarding interface, and on forwarding interface, generate the forwarding matrix of forming by forward-path and forwarding stage;
The datum plane processing module is used for accomplishing message forwarding according to the forwarding matrix of forwarding interface and handles;
The scheduling of resource module is used for accomplishing the forwarding Resource allocation and smoothing.
Further, said datum plane processing module comprises:
Message receives and dividing cell, is used for receiving message from link, and flows based on the message characteristic dividing data;
The packet route recognition unit is used to accomplish the processing of link and searching of interface, and the identification forward-path;
The message fragment processing unit is used to accomplish the forwarding of message on different forward-paths and handles;
Dispatching message and transmitting element are used to accomplish message and go out team and send processing.
Further, said message fragment processing unit is used for using each of forward-path of the forwarding matrix of message receiving interface or message transmission interface to transmit phase process function and carries out message forwarding and handle.
Further, said forward-path is decided by user configured forwarding type on the interface, perhaps, is decided by the loadtype of carrying in the heading.
Further, said scheduling of resource module is used for accomplishing each the forwarding stage CPU nuclear of forwarding matrix and/or the configuration and the scheduling of process and/or thread.
Further, the said forwarding stage comprises: link receives processing, input parsing, link input control, forwarding input processing and input control, forwarding is tabled look-up, exported parsing, transmits and export processing and control, link output control, transmission scheduling and message transmission stage.
A kind of message fragment processing method comprises: the control plane processing module is divided message forwarding path and forwarding stage, and forms the forwarding matrix; After the datum plane processing module receives message, accomplish the processing of link and searching of interface, and the identification forward-path; Each that uses this forward-path in the forwarding matrix of message receiving interface or message transmission interface then transmitted phase process function and carried out message forwarding and handle.
Further, in the message forwarding processing procedure, direct modification message itself or the process information of message is carried in the descriptor of message is continued to handle by the subsequent treatment function.
Further, this method specifically may further comprise the steps:
A. drive and receive message and location reception physical interface;
B. the corresponding message link head of link processing is distinguished the loadtype of message and the sub-interface at place, forward-path under the identification message;
E. the forward-path under the message is imported and handled and control and treatment;
F. the forward-path under the message is tabled look-up, according to the new link header of checking result encapsulation;
J. message is joined the team and message sends and to control.
Further, between step b and step e, also comprise step:
C. each heading in the message is resolved, and information is deposited in the message descriptor;
D. the input of link is controlled;
Between step f and step j, also comprise step:
G. the output of message is resolved;
H. the output of forward-path under the message is handled and output control;
I. the output of link is controlled.
The invention has the beneficial effects as follows: the characteristic that can make full use of hardware is accomplished efficient the forwarding, also can carry out static state or dynamic task division easily, and the allotment of computational resource; To Different products, adopt different dispatching methods can reach the purpose of efficient forwarding, reduced the cycle of product development simultaneously.
Description of drawings
Fig. 1 is the message fragment forwarding process figure of a kind of preferred embodiment of the present invention;
Fig. 2 is the sketch map of the forwarding matrix of a kind of preferred embodiment of the present invention;
Fig. 3 is the sketch map that used message structure is handled in forwarding of the present invention;
Fig. 4 is that the message fragment of another embodiment of the present invention is transmitted sketch map;
Fig. 5 is the structural representation of the repeater system of a kind of preferred embodiment of the present invention.
Embodiment
To adapting in the conventional art under the situation of communication equipment hardware differences; Satisfy the problem of the efficient demand of transmitting; The present invention provides a kind of message fragment processing method and message fragment treatment system; Its central idea is will guarantee message in the independence of each forwarding phase process and the high efficiency of whole forwarding process, and does not rely on the specificity of hardware as far as possible.
Message fragment processing method of the present invention is applicable to the monokaryon repeater system, also is applicable to the repeater system of multinuclear, is applicable to the message parallel processing of using streamline, also is applicable to the serial process of message.
Understand the method for ease, be treated to example with the message serial below,, describe the present invention in conjunction with accompanying drawing and related embodiment.
The main points of this message fragment processing method are following:
First: the data of using in the forwarding are that organize on the basis with the maximum structure of visit in the forwarding process preferably.
As everyone knows, the size of the cache in the system can have very big influence to the performance of transmitting, and the principle of locality of cache, makes the cohesion of data of the internal memory of visiting in the repeating process good more, and forwarding performance is high more; The number of times of visit RAM is few more, and performance is high more.In order to improve performance, that at first need consider will organize together used data in the message forwarding process exactly as far as possible, reduces the cost of access memory data in the repeating process as far as possible.And most data and business etc. are closely related with interface in the repeater system, so be that the basis organizes data that forwarding performance is very helpful with the forwarding unit of minimums such as interface.
Second: the code that makes same message when dividing forward-path with the stage of forwarding as far as possible and run is reduced the number of most, can consider the independence that each forward-path is handled, and transmits the correlation and the size of code time of implementation and size of code in each forwarding stage in handling.
The conventional steps that message is handled is generally: drive reception, and the link input, repeater system is handled, and link output drives transmission.And the code diversity of being run in its this several stages of message to different agreement is very large; Processing like IP, MPLS, IPV6 and bridge joint all is different; And to IP, messages such as MPLS also possibly be distinct in link processing with transmitting the business control of being done in the processing.In existing C PU; Branch judges very big to performance impact; The changing to swap out of command cache also can not look down upon to Effect on Performance, is a kind of desirable selection so in repeating process, divide forward-path, and the code that message is used as far as possible reduce the number of is most accomplished it and transmitted and handle.
Forward-path can decide according to user configured forwarding type on the interface, also can by in the heading with loadtype decide its forward-path.As can forward-path be divided into two layers of forwarding of bridge joint, VPLS forwarding, L2TP forwarding, IPV4 clean culture forwarding, IPV4 multicast forwarding, MPLS forwarding, IPV6 forwarding etc.
A lot of business are disposed on the interface in repeater system; If any interface on disposed ACL input and filtered, the configuration that has traffic shaping, the configuration that has network address translation (nat) etc.; That is to say; The message such as the IP of the same protocol type on the distinct interface wrap, and all might walk different handling processes, so can make forwarding more efficient based on interface or the forwarding unit organization forwarding process also littler than interface.
The division forwarding stage can will have the processing of similar functions to be placed on a forwarding stage on the basis of message handling process, perhaps can divide based on the length or the code time of implementation of code in each phase process.
Be placed on the criteria for classifying in a stage with the processing that similar functions will be arranged, can be divided into following several forwarding stage: link receives and handles, input is resolved, link input control, transmit that input is handled and input control, transmit and table look-up, export parsings, transmit output processing and control, link output control, send scheduling and message transmission stage.
Based on above thought, on interface, just formed a forwarding matrix of forming by forward-path and forwarding stage, as shown in Figure 2, laterally the forward-path of expression division is vertically represented the forwarding stage of dividing under each forward-path.Each node in the matrix is a series of forwarding and handles function; And some nodes in the matrix can be sky; And in matrix be that axle is a unidirectional handling process with the forward-path, it all is unidirectional to reprocessing getting into the processing stage of from which, has so just simplified flow process.This one-way process can realize through single-track link table associative function array.
Forward-path all is very easy to the expansion in the stage of forwarding, is convenient to support more professional and processing like this.Also conveniently support dissimilar equipment, as to distributed systems, can the processing stage in add one and stride the card pretreatment stage.Because the independence in each path, it also is same simple expanding new forward-path again.
Three, data of using in the repeating process and need the business control of process all need be issued to datum plane by control plane, and at datum plane based on above principle thought, form the forwarding matrix on the interface.In addition each business information is organized on the interface structure, convenient through the professional data message of each control of interface location.
As shown in Figure 1, be the complete forwarding process of a message, it may further comprise the steps:
Step 10: drive to receive message and the location receives physical interface, if the system of multinuclear can tentatively shunt in this step, as based on shuntings such as IP five-tuple or MPLS labels.
Step 20: the corresponding message link head of link processing, the loadtype of differentiation message is distinguished the sub-interface that message belongs to, and discerns the affiliated forward-path of message at last.
Step 30: each heading in the message is resolved, and information is deposited in the message descriptor.This step is optional step, if follow-up input has the professional more detailed information in the message of being concerned about in handling, then in this step, carries out packet parsing.
Step 40: with the irrelevant input control of forward-path, like control based on link, like MAC-ACL, CAR etc., this step is optional step, when not having these configurations, this step is skipped.
Step 50: the input of the forward-path that this message is affiliated is handled and control, and as being exactly to import like IP to handle concerning the IP message, IP ACL imports control etc., and concerning the MPLS message, is exactly the input control of MPLS input processing and MPLS.
Step 60: the forward-path under this message table look-up and according to the new link header of checking result encapsulation.Different forward-paths is searched different tables, transmit, multicast forward table, MPLS label list etc. like IP unicast.
Step 70: the parsing that the message output stage is handled, similar input is resolved, but is the parsing to the message that is about to output, also is optional step.
Step 80: the output of the forward-path under this message is handled and output control, also is optional.
Step 90: link output control, like MAC ACL, QOS, CAR etc. export processing.This step is optional step.
Step 100: message is joined the team and message sends.
More than for receive the complete forwarding process of a message from external interface.If relate to the switching between forward-path; Can carry out the forward-path switching through going into modes such as message queue or message queue; Switch to MPLS path etc. like the IP path; After switch in the path, begin flow from the step of needs and get final product, this flow process is the sub-process that is subordinated to this complete forwarding process.
Be illustrated in figure 3 as message and transmit employed message buffer, this buffer is made up of two parts, message data itself and message descriptor.
Message is transmitted in the processing procedure, direct modification message itself, or the process information of message is carried in the descriptor of message, continue processing by the subsequent treatment function.Each is transmitted and handles except needs are concerned about message itself and descriptor; Need not be concerned about in which process nuclear and accomplish; Need not be concerned about what subsequent treatment was carried out yet on which process nuclear, guarantee respectively to transmit the independence and the cohesion of phase process as far as possible, reduce the communication between the different forwarding stages; The convenient matrix of transmitting is applicable to multinuclear and monokaryon, or serial and parallel processing environment.
Fig. 4 is the embodiment sketch map that a message fragment is transmitted.
Wherein path 1 is the IP unicast forward-path, and path M is the MPLS forward-path, and omit in other path.
At first control plane issues the interface table, and the customer service that issues on the interface disposes like ACL, and CAR etc. form the forwarding matrix based on interface that forwarding need be used at datum plane.
Concerning an IP message, it transmits being treated to of process: 201,202,203,204,205,206 etc., and wherein 203-205 representes that this message is in following processing of passing through 1-N forwarding stage of IP unicast forward-path.
Concerning a MPLS message, it transmits being treated to of process: 201,202,207,208,209,206 etc., and wherein 207-209 representes that this message is in following processing of passing through 1-N forwarding stage of MPLS forward-path.
If fewer configurations and professional control just can be skipped the processing that some transmit the stage on certain interface, this just skips in chained list when generating the forwarding matrix of this interface, rather than in forwarding process, just judges, can accelerate the handling property of message like this.If can skip 204 among the embodiment, just do not comprise for 204 stages in the forwarding chained list in the forwarding matrix of this interface on the IP path.The IP bag on this interface, its handling process is: 201,202,203,205,206 etc.
The scheduling of resource processing can be controlled each forwarding stage and in which process or thread, accomplish in the monokaryon system.In multiple nucleus system, can arrange which forwarding stage completion on which nuclear.The another one stage of transmitting can be accomplished by a nuclear, also can be accomplished by a plurality of nuclears.
In addition, the present invention also provides a kind of message forwarding system; Fig. 5 is the structural representation of message forwarding system in a kind of preferred embodiment of the present invention.As shown in the figure; This system comprises control plane processing module 601, datum plane processing module 602, scheduling of resource module 603; Wherein the datum plane processing module comprises that message receives and dividing cell 701; Packet route recognition unit 702, message fragment processing unit 703～708, dispatching message and transmitting element 709.
Control plane processing module 601 is used to issue interface, business configuration etc., receives the notice of datum plane and collects forwarding statistics etc., and on forwarding interface, generate the forwarding matrix of being made up of forward-path and forwarding stage.
Datum plane forwarding module 602 is used to accomplish the whole forwarding processing of message.
Scheduling of resource module 603 is used for accomplishing the forwarding Resource allocation and smoothing.Like the distribution of CPU nuclear etc.
Wherein the datum plane forwarding module 602, comprise the following processing module again:
Message receives and dividing cell 701, is used for receiving message from circuit, some systems is also accomplished the effect of message shunting.
Packet route recognition unit 702 is accomplished the processing of link and searching of interface, the identification of forward-path.
Message fragment processing unit 703～708 is accomplished the corresponding forward-path and the segment processing in the stage of forwarding in this equipment.
Dispatching message and transmitting element 709 are accomplished going out team and sending processing of message.
The present invention's technical scheme required for protection comprises but is not limited only to the content in the above-mentioned execution mode; Under the situation that does not break away from spirit of the present invention, the content that those skilled in the art put down in writing according to above-mentioned execution mode is equal to replacement all in protection scope of the present invention to what scheme of the present invention was made.
Claims (10)
1. a message fragment treatment system is characterized in that, comprising:
The control plane processing module, the generation that is used to transmit passage or forwarding interface, and on forwarding interface, generate the forwarding matrix of forming by forward-path and forwarding stage;
The datum plane processing module is used for the forwarding matrix according to forwarding interface, accomplishes message forwarding and handles;
The scheduling of resource module is used for accomplishing the forwarding Resource allocation and smoothing.
2. a kind of message fragment treatment system as claimed in claim 1 is characterized in that, said datum plane processing module comprises:
Message receives and dividing cell, is used for receiving message from link, and flows based on the message characteristic dividing data;
The packet route recognition unit is used to accomplish the processing of link and searching of interface, and the identification forward-path;
The message fragment processing unit is used to accomplish the forwarding of message on different forward-paths and handles;
Dispatching message and transmitting element are used to accomplish message and go out team and send processing.
3. a kind of message fragment treatment system as claimed in claim 2; It is characterized in that; Said message fragment processing unit is used for using each of forward-path of the forwarding matrix of message receiving interface or message transmission interface to transmit phase process function and carries out message forwarding and handle.
4. according to claim 1 or claim 2 a kind of message fragment treatment system is characterized in that said forward-path is decided by user configured forwarding type on the interface.
5. according to claim 1 or claim 2 a kind of message fragment treatment system is characterized in that said forward-path is decided by the loadtype of carrying in the heading.
6. according to claim 1 or claim 2 a kind of message fragment treatment system is characterized in that, said scheduling of resource module is used for accomplishing each the forwarding stage CPU nuclear of transmitting matrix and/or the configuration and the scheduling of process and/or thread.
7. a message fragment processing method comprises: control plane processing module division message forwarding path and forwarding stage, and formation forwarding matrix; After the datum plane processing module receives message, accomplish the processing of link and searching of interface, and the identification forward-path; Each that uses forward-path in the forwarding matrix of message receiving interface or message transmission interface then transmitted phase process function and carried out message forwarding and handle.
8. a kind of message fragment processing method as claimed in claim 7 is characterized in that, in the message forwarding processing procedure, direct modification message itself or the process information of message is carried in the descriptor of message is continued to handle by the subsequent treatment function.
9. like claim 7 or 8 described a kind of message fragment processing methods, it is characterized in that this method specifically may further comprise the steps:
A. drive and receive message and location reception physical interface;
B. the corresponding message link head of link processing is distinguished the loadtype of message and the sub-interface at place, forward-path under the identification message;
E. the forward-path under the message is imported and handled and control and treatment;
F. the forward-path under the message is tabled look-up, according to the new link header of checking result encapsulation;
J. message is joined the team and message sends and to control.
10. a kind of message fragment processing method as claimed in claim 9 is characterized in that, between step b and step e, also comprises step:
C. each heading in the message is resolved, and information is deposited in the message descriptor;
D. the input of link is controlled;
Between step f and step j, also comprise step:
G. the output of message is resolved;
H. the output of forward-path under the message is handled and output control;
I. the output of link is controlled.
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| CN112087418A (en) * | 2020-07-23 | 2020-12-15 | 北京经纬恒润科技股份有限公司 | Method and device for calculating message data filling bits |
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