CN104580000A - Flow table technology-based RapidIO switching method - Google Patents
Flow table technology-based RapidIO switching method Download PDFInfo
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- CN104580000A CN104580000A CN201410750001.8A CN201410750001A CN104580000A CN 104580000 A CN104580000 A CN 104580000A CN 201410750001 A CN201410750001 A CN 201410750001A CN 104580000 A CN104580000 A CN 104580000A
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Abstract
The invention discloses a flow table technology-based RapidIO switching method which comprises the following steps that: an external host computer controls a maintenance transaction module to configure flow tables for each RapidIO switching module connected with the maintenance transaction module; terminal processing units transmit data packets to the corresponding RapidIO switching modules, and the RapidIO switching modules transmit acquired data packet information to the maintenance transaction module; the maintenance transaction module collects flow table information in the RapidIO switching modules in real time, establishes a flow table statistical database for all the terminal processing units, and calculates the data flow distribution information of the corresponding terminal processing units; the RapidIO switching modules acquires the data flow distribution information corresponding to the maintenance transaction module, and control the terminal processing units to transmit the data packets to corresponding ports of the RapidIO switching modules according to the data flow distribution information. According to the method, the concept of flow table employing an openflow protocol is put forwards, so that the problem of low efficiency of route selection for load balancing during RapidIO switching is solved, and meanwhile, the processing speed of a RapidIO network and the utilization rate of the RapidIO network are increased.
Description
Technical field
The present invention relates to RapidIO switching method, be specifically related to a kind of RapidIO switching method based on stream table technology.
Background technology
RapidIO is a kind of high-performance, low pin count, the interconnection architecture based on packet-switching that are taken the lead in advocating by companies such as Motorola and Mercury, is for meeting and following high performance embedded system demand and a kind of open system interconnection technical standard of designing.RapidIO is interconnected to be realized mainly through RapidIO exchange chip, develops the Zhu Youyou Tundra company of manufacturer of RapidIO exchange chip, Integrated Device Technology, Inc. and Redswitch company etc.The more RapidIO chip of current application has: CPS-1848 and Tsi578.When they carry out RapidIO exchange, be all carry out port repeat according to object ID, fine-grained control and forwarding cannot be accomplished to data stream.Like this when carrying out system interconnection, fine granularity load balancing and network traffics optimization cannot be carried out according to the feature of packet.
The implementation that the RapidIO that announced RapidIO exchange chip adopts in the market exchanges is all based on routing table, as the Tsi578 of Tundra company (being incorporated to Integrated Device Technology, Inc.) and the CPS1848 etc. of Integrated Device Technology, Inc., the scheme that they realize is: adopt the mode of searching routing table to determine the forwarding of wrapping, and routing table is made up of object ID and forwarding port two.From the RapidIO packet that each port is come in, first search the object ID of bag, if find the record of object ID in the routing table, then read it and forward port, then according to forwarding port, carry out the forwarding of packet.
Adopt existing technical scheme when the scheduling of load balancing carrying out RapidIO network, if when there is redundant path in RapidIO network, cannot carry out by type data stream, by certain rule shunting, cause the bandwidth availability ratio of network in large-scale RapidIO network not high, cause network traffic congestion odds higher.
Summary of the invention
The object of the present invention is to provide a kind of RapidIO switching method based on stream table technology, wherein, safeguard that transaction modules is each RapidIO Switching Module configuration flow table, and the stream table information of each RapidIO Switching Module of dynamic collection, set up stream table staqtistical data base, and calculate the distribution of flows information of counterpart terminal processing unit.RapidIO switching purpose ground choice criteria can be solved more single, underaction, for the function such as load balancing realizing RapidIO network, implement more difficult, be difficult to the problem of Optimizing Network Resources; Simultaneously, the present invention propose a kind of concept using the stream table of openflow agreement solve RapidIO exchange in Route Selection problem not is efficiently realized for load balancing, accelerate the processing speed of RapidIO network simultaneously and improve the utilization factor of RapidIO network.
In order to achieve the above object, the present invention is achieved through the following technical solutions:
Based on a RapidIO exchange system for stream table technology, be characterized in, this system comprises:
Multiple RapidIO Switching Module, each described RapidIO Switching Module is connected with other RapidIO Switching Modules respectively;
Multiple terminal processing units, each terminal processing units connects with corresponding RapidIO Switching Module.
Safeguard transaction modules 30, be connected with described multiple RapidIO Switching Module, external host respectively.
Preferably, each described RapidIO Switching Module has multiple port, and each described port is connected with described terminal processing units or the port of RapidIO Switching Module described in other as required.
Preferably, each described terminal processing units is used for Packet Generation in corresponding described RapidIO Switching Module;
After described RapidIO Switching Module obtains the packet of terminal processing units transmission of its correspondence, this RapidIO Switching Module sends acquisition packet information and safeguards transaction modules to described;
External host control is described safeguards that transaction modules is each described RapidIO Switching Module configuration flow table, and the stream table information of each described RapidIO Switching Module of dynamic collection, set up stream table staqtistical data base.
Based on a RapidIO switching method for stream table technology, be characterized in, the method comprises following steps:
S1, external host controls to safeguard that transaction modules is connected each RapidIO Switching Module configuration flow table;
S2, terminal processing units sends packet in corresponding described RapidIO Switching Module, and this RapidIO Switching Module sends acquisition packet information and safeguards transaction modules to described;
S3, the described stream table information safeguarded on RapidIO Switching Module described in transaction modules real-time collecting, sets up stream table staqtistical data base for all terminal processing units and calculates the distribution of flows information of corresponding described terminal processing units;
S4, described RapidIO Switching Module obtains describedly safeguards the distribution of flows information that transaction modules is corresponding, and control described terminal processing units according to this distribution of flows information by Packet Generation to the corresponding port of this RapidIO Switching Module.
Preferably, described step S1 comprises following steps:
Describedly safeguard that transaction modules is the stream table that each described RapidIO Switching Module creates, described stream table comprises many stream informations, and every bar stream information comprises: matching domain, statistical counter and action message.
Preferably, in described stream table:
Described matching domain comprises described precedence information, source terminal processing unit identification code and object terminal processing units identification code;
Described statistical counter is for counting the packet number meeting matching condition;
Described action message comprises the port of source terminal processing unit forwarding data bag to the described high-speed serial I/O Switching Module of correspondence of described object terminal processing units.
Preferably, before the described step S2 of execution, described terminal processing units scanning obtains the network topology structure of RapidIO.
Preferably, described step S3 comprises following steps:
S3.1, the described stream table information safeguarded on transaction modules RapidIO Switching Module according to real-time collecting sets up stream table staqtistical data base,
S3.2, describedly safeguards that transaction modules is according to the every bar stream information in each stream table in this stream table staqtistical data base, in conjunction with arriving the number of passes of described object terminal processing units, the bandwidth rates of every paths, selects the load balancing preset;
S3.3, according to described load balancing, describedly safeguards transaction modules by distribution of flows in each paths, and described distribution of flows information is sent in the stream table of corresponding described RapidIO Switching Module.
Preferably, in described step S3.2, the load balancing preset adopts path flow weight assignment method.
Preferably, described step S4 comprises following steps:
Described RapidIO Switching Module controls described terminal processing units according to described stream table information, by its Packet Generation to the corresponding port of corresponding RapidIO Switching Module, and is sent in object terminal processing units by this port.
The present invention compared with prior art has the following advantages:
The present invention introduces the concept of stream table in openflow Ethernet switch in RapidIO exchanges, the form of stream table is adopted to decide the routing forwarding of RapidIO exchange, because stream table has routing forwarding ability more flexibly, more careful control can be carried out like this to the packet entered in RapidIO exchange chip, the whole flow control of RapidIO network and the realization of optimization are laid a good foundation, accelerates the processing speed of RapidIO network simultaneously and improve the utilization factor of RapidIO network.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic diagram of a kind of RapidIO exchange system based on stream table technology of the present invention.
Fig. 2 is the embodiment schematic diagram two of a kind of RapidIO exchange system based on stream table technology of the present invention.
Fig. 3 is the embodiment schematic diagram three of a kind of RapidIO exchange system based on stream table technology of the present invention.
Fig. 4 is the embodiment schematic diagram four of a kind of RapidIO exchange system based on stream table technology of the present invention.
Fig. 5 is the embodiment schematic diagram five of a kind of RapidIO exchange system based on stream table technology of the present invention.
Fig. 6 is the overall flow schematic diagram of a kind of RapidIO switching method based on stream table technology of the present invention.
Embodiment
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the present invention is further elaborated.
As shown in Figure 1, a kind of RapidIO exchange system based on stream table technology, this system comprises: multiple terminal processing units 10, multiple RapidIO Switching Module 20 and safeguard transaction modules 30.
Wherein, each RapidIO Switching Module 20 is connected with other RapidIO Switching Modules 20 respectively; Each terminal processing units 10 connects with corresponding RapidIO Switching Module 20; Safeguard transaction modules 30, be connected with multiple RapidIO Switching Module 20, external host respectively.
Each RapidIO Switching Module 20 has multiple port, and each described port can be connected with the port of described terminal processing units 10 or other RapidIO Switching Modules 20 as required.
As shown in Figure 1, terminal processing units 1 is connected with the port one of RapidIO Switching Module 1, and terminal processing units 2 is connected with the port one of RapidIO Switching Module 2; The port 4 of RapidIO Switching Module 1 is connected with the port one of RapidIO Switching Module 3, the port 3 of RapidIO Switching Module 1 is connected with the port one of RapidIO Switching Module 2, and the port 2 of RapidIO Switching Module 3 is connected with the port 2 of RapidIO Switching Module 2; Terminal processing units 3 is connected with the port 3 of RapidIO Switching Module 2, and terminal processing units 4 is connected with the port 4 of RapidIO Switching Module 2.
In the present invention, each terminal processing units 10 for by Packet Generation in corresponding RapidIO Switching Module 20.After RapidIO Switching Module 20 obtains the packet of terminal processing units 10 transmission of its correspondence, this RapidIO Switching Module 20 sends and obtains packet information to safeguarding transaction modules 30.External host controls to safeguard that transaction modules 30 is for each RapidIO Switching Module 20 configuration flow table, and the stream table information of each RapidIO Switching Module 20 of dynamic collection, set up stream table staqtistical data base.
Stream table in the present invention adopts the stream table concept in Openflow agreement, uses the structure of stream table, by the configuration to matching domain, carries out routing forwarding.Adopt maintenance transaction chip as safeguarding transaction modules 30.
As shown in Figure 6, a kind of RapidIO switching method based on stream table technology, the method comprises following steps:
S1, external host controls to safeguard that transaction modules 30 is for connected each RapidIO Switching Module 20 configuration flow table.This step comprises following steps:
Safeguard that transaction modules 30 is the stream table that each RapidIO Switching Module 20 creates, stream table comprises many stream informations.As shown in Figure 6, every bar stream information comprises: matching domain, statistical counter and action message.
In every bar stream information, matching domain comprises precedence information (pri), source terminal processing unit 10 identification code (SrcID) and object terminal processing units 10 identification code (DstID).Statistical counter is for counting the packet number meeting matching condition.Action message comprises the port of source terminal processing unit 10 forwarding data bag to the corresponding high-speed serial I/O Switching Module 40 of object terminal processing units 10.
Before execution step S2, terminal processing units 10 scans the network topology structure obtaining RapidIO.
S2, terminal processing units 10 sends packet in corresponding RapidIO Switching Module 20, and this RapidIO Switching Module 20 sends and obtains packet information to safeguarding transaction modules 30.
S3, safeguards the stream table information on transaction modules 30 real-time collecting RapidIO Switching Module 20, sets up stream table staqtistical data base and calculate the distribution of flows information of counterpart terminal processing unit 10 for all terminal processing units 10.This step comprises following steps:
S3.1, safeguards that transaction modules 30 sets up stream table staqtistical data base according to the stream table information on real-time collecting RapidIO Switching Module 20.
In the present embodiment, stream table information on each RapidIO Switching Module 20 of maintenance transaction chip dynamic collection, all stream informations in each stream table information are carried out collecting, adding up, thus sets up stream table staqtistical data base at maintenance transaction chip internal according to all stream informations.
S3.2, safeguards that transaction modules 30 is according to the every bar stream information in each stream table in this stream table staqtistical data base, in conjunction with arriving the number of passes of object terminal processing units 10, the bandwidth rates of every paths, selects the load balancing preset.
In step S3.2, the load balancing preset adopts path flow weight assignment method.
S3.3, according to load balancing, safeguards transaction modules 30 by distribution of flows in each paths, and distribution of flows information is sent in the stream table of corresponding RapidIO Switching Module 20.
Adopt path flow weight assignment method distribution of flows can be gone to each paths in the present embodiment, to reach the object making full use of Internet resources.And at the different times that RapidIO exchange system runs, dynamic conditioning can be carried out by the distribution of stream table convection current.
S4, RapidIO Switching Module 20 obtains the distribution of flows information of transaction modules 30 correspondence safeguarded, and control terminal processing unit 10 according to this distribution of flows information by Packet Generation to the corresponding port of this RapidIO Switching Module 20.Following steps are comprised in this step:
RapidIO Switching Module 20 control terminal processing unit 10, according to stream table information, by its Packet Generation to the corresponding port of corresponding RapidIO Switching Module 20, and is sent in object terminal processing units 10 by this port.
In the present embodiment, as shown in Figure 1, the packet of terminal processing units 1 requires to be sent to terminal processing units 3, and the packet of terminal processing units 2 requires to be sent to terminal processing units 4.Maintenance transaction chip carries out the stream table of distribution acquisition as shown in Figure 3-Figure 5 according to path flow weight assignment method to data stream; Known in the stream table that RapidIO Switching Module 1 obtains, terminal processing units 1 sends packet by the port 4 of RapidIO Switching Module 1, and terminal processing units 2 sends packet by the port 3 of RapidIO Switching Module 1; Known in the stream table that RapidIO Switching Module 2 obtains, terminal processing units 2 sends packet to terminal processing units 3 by the port 3 of RapidIO Switching Module 2; Known in the stream table that RapidIO Switching Module 3 obtains, terminal processing units 1 sends packet by the port 2 of RapidIO Switching Module 3.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1., based on a RapidIO exchange system for stream table technology, it is characterized in that, this system comprises:
Multiple RapidIO Switching Module (20), each described RapidIO Switching Module (20) is connected with other RapidIO Switching Modules (20) respectively;
Multiple terminal processing units (10), each described terminal processing units (10) connects with corresponding described RapidIO Switching Module (20);
Safeguard transaction modules (30), be connected with described multiple RapidIO Switching Module (20), external host respectively.
2. as claimed in claim 1 based on the RapidIO exchange system of stream table technology, it is characterized in that, each described RapidIO Switching Module (20) has multiple port, and each described port is connected with described terminal processing units (10) or the port of RapidIO Switching Module (20) described in other as required.
3., as claimed in claim 1 based on the RapidIO exchange system of stream table technology, it is characterized in that,
Described terminal processing units (10) for by Packet Generation in corresponding described RapidIO Switching Module (20);
After the packet that the terminal processing units (10) obtaining its correspondence when described RapidIO Switching Module (20) sends, this RapidIO Switching Module (20) sends and obtains packet information and safeguards transaction modules (30) to described;
External host control is described safeguards that transaction modules (30) is for each described RapidIO Switching Module (20) configuration flow table, the stream table information of each described RapidIO Switching Module (20) of dynamic collection, set up stream table staqtistical data base, and calculate the distribution of flows information of corresponding described terminal processing units (10).
4., based on a RapidIO switching method for stream table technology, it is characterized in that, the method comprises following steps:
S1, external host controls to safeguard that transaction modules (30) is for connected each RapidIO Switching Module (20) configuration flow table;
S2, terminal processing units (10) sends packet in corresponding described RapidIO Switching Module (20), and this RapidIO Switching Module (20) sends acquisition packet information and safeguards transaction modules (30) to described;
S3, the described stream table information safeguarded on RapidIO Switching Module (20) described in transaction modules (30) real-time collecting, sets up stream table staqtistical data base for all terminal processing units (10) and calculates the distribution of flows information of corresponding described terminal processing units (10);
S4, described RapidIO Switching Module (20) obtains the described distribution of flows information that transaction modules (30) is corresponding of safeguarding, and control described terminal processing units (10) according to this distribution of flows information by Packet Generation to the corresponding port of this RapidIO Switching Module (20).
5., as claimed in claim 4 based on the RapidIO switching method of stream table technology, it is characterized in that, described step S1 comprises following steps:
Describedly safeguard the stream table that transaction modules (30) creates for each described RapidIO Switching Module (20), described stream table comprises many stream informations, and every bar stream information comprises: matching domain, statistical counter and action message.
6. as claimed in claim 5 based on the RapidIO switching method of stream table technology, it is characterized in that, in the stream information of described stream table:
Described matching domain comprises described precedence information, source terminal processing unit identification code and object terminal processing units identification code;
Described statistical counter is for counting the packet number meeting matching condition;
Described action message comprises the port of source terminal processing unit (10) forwarding data bag to the described RapidIO Switching Module (20) of correspondence of described object terminal processing units (10).
7. as claimed in claim 6 based on the RapidIO switching method of stream table technology, it is characterized in that, before the described step S2 of execution, described terminal processing units (10) scanning obtains the network topology structure of RapidIO.
8., as claimed in claim 4 based on the RapidIO switching method of stream table technology, it is characterized in that, described step S3 comprises following steps:
S3.1, the described stream table information safeguarded on transaction modules (30) RapidIO Switching Module (20) according to real-time collecting sets up stream table staqtistical data base,
S3.2, described safeguard transaction modules (30) according in this stream table staqtistical data base each stream table in every bar stream information, in conjunction with arriving the number of passes of described object terminal processing units (10), the bandwidth rates of every paths, select the load balancing preset;
S3.3, according to described load balancing, describedly safeguards transaction modules (30) by distribution of flows in each paths, and described distribution of flows information is sent in the stream table of corresponding described RapidIO Switching Module (20).
9. as claimed in claim 8 based on the RapidIO switching method of stream table technology, it is characterized in that, in described step S3.2, the load balancing preset adopts path flow weight assignment method.
10., as claimed in claim 4 based on the RapidIO switching method of stream table technology, it is characterized in that, described step S4 comprises following steps:
Described RapidIO Switching Module (20) controls described terminal processing units (10) according to described stream table information, by its Packet Generation to the corresponding port of corresponding RapidIO Switching Module (20), and be sent in object terminal processing units (10) by this port.
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Application publication date: 20150429 |