CN1937586A - Device and method for realizing fluid control information transfer - Google Patents
Device and method for realizing fluid control information transfer Download PDFInfo
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Abstract
The invention relates to a stream control message transfer implementing device and method. And the device comprises: transmitting unit, receiving unit, interface conversion unit and stream control message centralized processing unit, where the stream control message centralized processing unit is used to collect the stream control messages transmitted by the interface conversion unit and the receiving unit and transmits the stream control status messages containing stream control status to the transmitting unit. And the method comprises: the transmitting units transmits data through the interface conversion unit to the receiving unit, and the interface conversion unit and/or the receiving unit transmit stream control status messages to the stream control message centralized processing unit when determining the data are blocked; the stream control message centralized processing unit unites the stream control messages and generates stream control status messages according to the stream control messages, and transmits the stream control message to the transmitting unit. And it can implement stream control message transfer between multiple interfaces and does not lose channelized messages in the transferring course.
Description
Technical field
The present invention relates to network communications technology field, relate in particular to a kind of device and method of realizing that flow-control information transmits.
Background technology
System information packet interface SPI4.2 and 10Gb extra cell interface XAUI are all communication and establish in the field and to use two kinds of data-interfaces very widely, will be introduced two kinds of interfaces respectively below.
SPI4.2 (Level4, Phase2) interface is a new system-level interface standard, the designer can be according to this standard for data and the communications service concentrated are developed flexibly, upgradeable system.The SPI4.2 interface is by the two-way data traffic of 20G altogether of 32 couples of LVDS (transmission of low voltage differential signal) holding wire carrying, because the feature of its parallel bus makes its occasion that is adapted at the inner point-to-point interconnection of function veneer use.
With folk prescription to being transmitted as example, the connection performance of described SPI4.2 interface connects accordingly and comprises two parts as shown in Figure 1: connect and be connected to the back-pressure of the transmission flow-control information of sender from receiver to the data that receiver (receiving terminal) sends data flow from sender (transmitting terminal).
The SPI4.2 interface has multichannel characteristic, promptly can carry the data of a plurality of logical channels on physical interface, and described each logical channel belongs to separately independently subport.As shown in Figure 1, all embodying multichannel feature on the data-interface He on the back-pressure interface, promptly all be mingled on the same physical connection and transmit in time-multiplexed mode from the data of a plurality of passage sub-port (subport) or at the flow-control information of a plurality of sub-port.
The XAUI interface is made up of 8 couples of CML SERDES (brand-new CML communication between plates chip), every couple of SERDES (communication chip between logic card) carrying 3.125G is through the data flow of 8B/10B, raw tape is wide to be 2.5G, thereby whole interface provides the data bandwidth of two-way 20G, because its signal adopts the characteristics of serial transmission, therefore, this interface is suitable for the occasion that interconnects by backboard between the veneer.
The connection performance of XAUI interface is compared with SPI4.2 as shown in Figure 2, and its maximum feature is not support multichannel.
Under some occasion,, can stride the backboard transmission again because the needs of system design require interface should support multichannel.For this reason, SPI4.2 need be used in combination with the XAUI interface, promptly as shown in Figure 3, in system, increase by two interface conversion chips, described conversion chip can be realized by FPGA (field programmable gate array) usually, at this moment, be to guarantee the reliable realization of data passes, in this SPI4.2 and scheme that the XAUI interface is used in combination, need to realize the transmission of flow-control information.
System at Fig. 3 description, a kind of more direct flow-control information transfer method that provides at present as shown in Figure 4, in this flow-control information transfer method, each interface all carries out the flow-control information transmission according to own original mode, but this flow-control information transmits the information that implementation will lose channelizing.Because passage is not distinguished in FPGA2 inside, in other words, it only safeguards a formation, like this, the flow-control information that receiver sends has lost channelizing information through behind the FPGA2, what be that each sub-port among the sender receives is not specific flow-control information at oneself, and all passages will be received same flow-control information, and can it send and will be subjected to same rule constrain.
Like this, in the transmittance process of flow-control information, because the loss of channelizing information causes each sub-port to lose independence.
In order not lose channelizing information in the flow-control information transmittance process, another kind of method has proposed to utilize in-band method at XAUI interface transmission channels flow-control information.Be more self-defined Flow Control messages, carry corresponding flow-control information by self-defining form in described Flow Control message inside.Described Flow Control message will be mingled in same physical channel with data message and transmit, thereby reduce extra Flow Control transfer line expense.Therefore, this implementation can make system design obtain simplifying again when guaranteeing that the channelizing flow-control information transmits.
But, Flow Control is transmitted in the implementation of information in this band, owing to used self-defining flow control signal form, thereby the both sides' chip that needs interface can both be supported this self-defining flow control signal form, the standardization advantage that in fact this destroyed the XAUI interface makes it use flexibility to reduce greatly;
And, because flow-control information and data transmit in same physical channel, take the bandwidth of physical channel, thereby will influence the speed that data transmit;
In addition, in this implementation, because the data channel that the flow-control information of a direction is actually by another direction transmits, make the both direction of interface produce tight related, promptly transmit when unavailable when a bearing data, because flow-control information can't transmit, it is also unavailable that the data of another direction transmit reality, and this obviously makes the reliability of data passes reduce greatly.
In a word, at present at the SPI4.2 interface with when the XAUI interface is used in combination, perhaps in transmittance process, lose channelizing information, perhaps destroyed the XAUI interface standard, thereby flexibility reduced greatly.
Summary of the invention
The purpose of this invention is to provide a kind of devices and methods therefor of realizing that flow-control information transmits, on the basis of not destroying interface standard, realize of the transmission of SPI4.2 interface, and can guarantee in transmittance process, not lose channelizing information to the multichannel flow-control information of XAUI interface.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides a kind of device of realizing that flow-control information transmits, described device comprises:
Transmitting element: have a plurality of independently passages, be used for sending data, and the passage that notification data takes place to block stops to send data by passage;
Interface conversion unit: be used to receive data and the output that described transmitting element sends, and when specified data takes place to block, produce and send flow-control information;
Receiving element: have a plurality of formations, described formation is corresponding with the passage of described transmitting element, is used to receive the data that described interface conversion unit sends over, and when specified data takes place to block, produces and send flow-control information;
Flow-control information centralized processing unit: be connected with described transmitting element, described receiving element and described interface conversion unit respectively, be used for the flow-control information that receiving interface converting unit and/or receiving element send, and, then described Flow Control state information is sent to described transmitting element according to described flow-control information generation Flow Control state information;
Wherein, when the passage that described transmitting element notification data takes place to block stops to send data, need use the Flow Control state information that described flow-control information centralized processing unit sends.
Described interface conversion unit specifically comprises:
First interface conversion unit: link to each other with described transmitting element by a SPI4.2 interface, be used to receive the data that described transmitting element is sent, and when specified data takes place to block, produce and send flow-control information to described flow-control information centralized processing unit;
Second interface conversion unit: link to each other with described first interface conversion unit by the XAUI interface, link to each other with described receiving element by the 2nd SPI4.2 interface, be used to receive the data that described first interface conversion unit is sent, and when specified data takes place to block, produce and send flow-control information to described flow-control information centralized processing unit.
Described flow-control information centralized processing unit specifically comprises:
The 3rd interface conversion unit, be used to receive the flow-control information that described receiving element, described first interface conversion unit or described second interface conversion unit are sent, generate the Flow Control state information according to described flow-control information, and described Flow Control state information is sent to described transmitting element.
Interface unit comprises the first back-pressure interface, the second back-pressure interface, the 3rd back-pressure interface and the 4th back-pressure interface; Wherein, the first back-pressure interface is used for by this interface the flow-control information that described receiving element produces being passed to described the 3rd interface conversion unit; The second back-pressure interface: be used for the flow-control information that described second interface conversion unit produces being passed to the 3rd interface conversion unit by this interface; The 3rd back-pressure interface: be used for the flow-control information that described first interface conversion unit produces being passed to the 3rd interface conversion unit by this interface; The 4th back-pressure interface: be used for the Flow Control state information of the generation of described the 3rd interface conversion unit being passed to described transmitting element by this interface; The described first back-pressure interface, the 3rd back-pressure interface and the 4th back-pressure interface interface for supporting that the multichannel flow-control information transmits, the interface of the described second back-pressure interface for not supporting that the multichannel flow-control information transmits.
Described the 3rd interface conversion unit specifically comprises:
The flow-control information maintenance module: be used to store the blocked state of described transmitting element to the whole data transfer path upper channel of described receiving element, and with the blocked state set of described passage;
Flow-control information sending module: be used for generating the Flow Control state information, and described Flow Control state information is sent to transmitting element by the 4th back-pressure interface according to the blocked state of described flow-control information maintenance module.
The present invention also provides a kind of method that realizes that flow-control information transmits, and comprises step:
A, transmitting element utilize passage to send the data to receiving element by interface conversion unit, when described interface conversion unit and/or receiving element take place to block in specified data, produce and send flow-control information to the flow-control information centralized processing unit;
The flow-control information that B, flow-control information centralized processing unit receiving interface converting unit and/or receiving element send, and, then described Flow Control state information is sent to transmitting element according to described flow-control information generation Flow Control state information;
C, transmitting element stop to send data according to the passage of described Flow Control state information notification generation data jamming.
Described steps A specifically comprises,
First interface conversion unit receives the data that transmitting element sends, and transmits to second interface conversion unit, and when specified data takes place to block, produces and send flow-control information to the flow-control information centralized processing unit;
Second interface conversion unit receives the data that first converting unit is sent, and transmits to receiving element, and when specified data takes place to block, produces and send flow-control information to the flow-control information centralized processing unit;
Receiving element receives the data that second converting unit sends, and when specified data takes place to block, produces and send flow-control information to the flow-control information centralized processing unit.
Described step B specifically comprises,
The flow-control information centralized processing unit receives flow-control information, with the blocked state set of respective channel;
Generate the Flow Control state information according to blocked state, and described Flow Control state information is sent to transmitting element.
In sum, the present invention collects from the flow-control information of interface conversion unit and/or receiving element by the unification of flow-control information centralized processing unit, and according to described flow-control information generation Flow Control state information, and the Flow Control state information that will comprise each passage blocked state passes to transmitting element, transmitting element stops to send data flow according to the passage that data jamming has taken place described Flow Control state information notification, thereby reaches the purpose of channelizing Flow Control.
Description of drawings
Fig. 1 is the interface features schematic diagram of system information packet interface SPI4.2;
Fig. 2 is the characteristic schematic diagram of XAUI interface;
The schematic diagram that Fig. 3 is used in combination with the XAUI interface for SPI4.2 interface in existing a kind of method;
Fig. 4 is the schematic diagram when the SPI4.2 interface is used in combination with the XAUI interface in the existing another kind of method;
Schematic diagram when Fig. 5 is used in combination with the XAUI interface for SPI4.2 interface among the present invention;
Fig. 6 is the schematic diagram of the information format of flow-control information BP1, BP2 among the present invention and BP3;
Fig. 7 is the flow chart of flow-control information transfer method between SPI4.2 interface of the present invention and the interface XAUI.
Embodiment
Core concept of the present invention is by increasing a flow-control information centralized processing unit, make between SPI4.2 interface and XAUI interface the transmission that realizes flow-control information, and in transmittance process, do not lose channelizing information, thereby effectively overcome the existing in prior technology problem.
Device below in conjunction with the transmission of 5 pairs of many interfaces of support flow-control informations of the present invention of accompanying drawing is described in further detail.
The device that many interfaces of support flow-control information of the present invention transmits specifically comprises: transmitting element, interface conversion unit, receiving element, flow-control information centralized processing unit in implementation process; Wherein:
Described transmitting element is responsible for sending data flow, its inside comprises a plurality of independently information channels, described passage is corresponding one by one with the formation of accepting the unit, and like this, each passage of transmitting element just can send to data flow the corresponding formation of receiving element by interface conversion unit;
Described interface conversion unit comprises, the first interface conversion unit FPGA1 and the second interface conversion unit FPGA2:
The first interface conversion unit FPGA1: link to each other with transmitting element by the packet interface SPI4.2 of first information system, XAUI links to each other with second interface unit by 10GB extra cell interface, FGPA1 receives the data flow that each passage of transmitting element is sent, because a plurality of channel queues of FPGA1 internal maintenance structure, so FPGA1 will send the situation of these formations in turn, circulate a notice of it and whether crossed thresholding, if certain formation has surpassed thresholding, the data that this formation is described are blocked, need the passage of correspondence in the notice transmitting element to stop transmission information, this moment, FGPA1 sent flow-control information bp3 by the 3rd back-pressure interface to the 3rd translation interface unit F GPA3 of flow-control information centralized processing unit, require passage corresponding in the transmitting element, the passage that data jamming promptly takes place stops to send data flow, the data flow that FPGA1 has continued to block sends to the second translation interface unit F GPA2 by the XAUI interface, here, because this moment, data were blocked, so the flow of the transmission of data flow and speed etc. are not as the past, also loss of data might take place, but these all are the problems of the prior art, not that the present invention will be concerned about, do not set forth so here just do not do; If do not surpass thresholding, FPGA1 just sends to the second translation interface unit F GPA2 with data flow by the XAUI interface.
The second interface conversion unit FPGA2: link to each other with first interface conversion unit by XAUI, link to each other with receiving element by the second information system packet interface SPI4.2, FGPA2 receives the data flow that the first translation interface unit F GPA1 sends, because passage is not distinguished in FPG2 inside, so principle according to first in first out, all data flow will be mixed storage and processing at this, if data jamming takes place in FGPA2 in the process of handling, need all passages of notice transmitting element to stop to send data, this moment, FGPA2 sent flow-control information bp2 by the second back-pressure interface to the 3rd translation interface unit F GPA3 of flow-control information centralized processing unit; And the data flow that will block sends to receiving element by the 2nd SPI4.2 interface; If data are not blocked, FPGA1 just sends to receiving element with data flow by the 2nd SPI4.2 interface.
Described XAUI interface links to each other with a SPI4.2 interface, also links to each other with the 2nd SPI4.2 interface by the second interface conversion unit FPGA2 by the first interface conversion unit FPGA1.Described first interface conversion unit is responsible for the conversion of agreement between a SPI4.2 interface and the XAUI interface, and described second interface conversion unit is responsible for the conversion of agreement between the 2nd SPI4.2 interface and the XAUI interface.
There are a plurality of channel queues in described receiving element inside, described formation is corresponding with the passage in the transmitting element, and for each channel queue has set thresholding, it is congested to determine according to described threshold value whether formation takes place, and when specified data takes place to block, produce and send flow-control information to the flow-control information centralized processing unit;
Flow-control information centralized processing unit: be connected with transmitting element, receiving element, interface conversion unit respectively, the flow-control information that receiving interface converting unit and/or receiving element send, and according to described flow-control information generation Flow Control state information, then described Flow Control state information is sent to transmitting element, described transmitting element stops to send data flow according to the passage that described Flow Control state information notification data take place to block.
Described Flow Control centralized processing unit comprises: interface unit and the 3rd interface conversion unit,
Following docking port unit elaborates.Described interface unit specifically comprises: the first back-pressure interface, the second back-pressure interface, the 3rd back-pressure interface and the 4th back-pressure interface, be used for flow-control information is passed to the 3rd interface conversion unit, wherein, the first back-pressure interface, the 3rd back-pressure interface, the interface of the 4th back-pressure interface for supporting that the multichannel flow-control information transmits, the second back-pressure interface is not for supporting the interface of multichannel flow-control information, promptly the flow-control information by the described second back-pressure interface mixes, and does not distinguish passage;
The first back-pressure interface: connect receiving element and the 3rd interface conversion unit, the carrying receiving element sends to the flow-control information BP1 of the 3rd interface conversion unit, that is, receiving element passes to the 3rd interface conversion unit by the described first back-pressure interface with flow-control information BP1;
The second back-pressure interface: connect second interface conversion unit and the 3rd interface conversion unit, carry the flow-control information BP2 that second interface conversion unit sends to the 3rd interface conversion unit, that is, second interface conversion unit passes to the 3rd interface conversion unit by the described second back-pressure interface with flow-control information BP2;
The 3rd back-pressure interface: connect first interface conversion unit and the 3rd interface conversion unit, carry the flow-control information BP3 that first interface conversion unit sends to the 3rd interface conversion unit, promptly first interface conversion unit passes to the 3rd interface conversion unit by described the 3rd back-pressure interface with flow-control information BP3;
The 4th back-pressure interface: connect transmitting element and the 3rd interface conversion unit, carry the Flow Control state information BP4 that the 3rd interface conversion unit sends to transmitting element, promptly the 3rd interface conversion unit passes to transmitting element with Flow Control state information BP4, so that transmitting element stops to send data flow according to the passage that described Flow Control state information notification data take place to block;
The information format of described flow-control information BP1, BP3, BP4 is identical, as shown in Figure 6.
Then described the 3rd interface conversion unit is described in detail.
Described the 3rd interface conversion unit links to each other with receiving element, links to each other with second interface conversion unit, links to each other with first interface conversion unit, links to each other with transmitting element by the 4th back-pressure interface by the 3rd back-pressure interface by the second back-pressure interface by the first back-pressure interface, be responsible for receiving the flow-control information that receiving element, first interface conversion unit and the 3rd interface conversion unit are sent, and will send to transmitting element according to the Flow Control state information that described flow-control information produces.
Described the 3rd interface conversion unit specifically comprises:
Flow-control information maintenance module: be used for the blocked state of memory channel on the whole data transfer path from the transmitting element to the receiving element, in the time of initialized, the blocked state of all passages is set to not block, when the data of passage take place to block, with the blocked state set of respective channel, and trigger the flow-control information sending module;
Be exactly specifically, when the flow-control information received from certain passage of the first interface conversion unit FPGA1 or receiving element, the blocked state that the passage of data jamming will take place the flow-control information maintenance module carry out set (such as, can represent the data of this passage to block with 0 sign, represent this passage to block with 1 sign, when the data of passage take place to block, change 0 of this passage into 1); When the flow-control information received from second interface conversion unit, with the blocked state set (changing 1 into) of all passages with 0; Then, the flow-control information maintenance module triggers the flow-control information sending module;
Flow-control information sending module: produce the Flow Control state information according to the blocked state in the flow-control information maintenance module, promptly extract sign and be set to 1 flow-control information, and described Flow Control state information is sent to transmitting element by the 4th back-pressure interface as the Flow Control state information from the flow-control information maintenance module.
Here, the present invention describes to stride backboard transmission data instance, but in fact, the present invention also can be applied to the non-backboard transmission data of striding.
Method below in conjunction with the transmission of 7 pairs of many interfaces of support flow-control informations of the present invention of accompanying drawing is described in further detail.
As shown in Figure 7, method of the present invention specifically may further comprise the steps:
That is, comprise a plurality of independently passages in the transmitting element, each passage sends to receiving element with data message;
Be exactly specifically, a plurality of passages of transmitting element send data flow by a SPI4.2 interface, the first translation interface unit F GPA1 receives the data flow of each passage, because a plurality of channel queues of FPGA1 internal maintenance structure, so FPGA1 will send the situation of these formations in turn, circulate a notice of it and whether crossed thresholding, if certain formation has surpassed thresholding, the data that this formation is described are blocked, need allow corresponding passage stops transmission information in the transmitting element, this moment, FGPA1 sent flow-control information bp3 by the 3rd back-pressure interface to the 3rd translation interface unit F GPA3 of flow-control information centralized processing unit, require that the passage corresponding with this formation stops to send data message in the transmitting element, and the data flow that has continued to block sends to the second translation interface unit F GPA2 by the XAUI interface; If do not surpass thresholding, FPGA1 just sends to the second translation interface unit F GPA2 with data flow by the XAUI interface.
Step 12, FPGA2 is from the FPGA1 receiving data stream, and sends the data flow that receives to receiving element, when FPGA2 takes place to block in specified data, produces flow-control information bp2, and passes to FPGA3;
Be exactly specifically, the second translation interface unit F GPA2 receives the data flow that the first translation interface unit F GPA1 sends, because passage is not distinguished in FPG2 inside, so principle according to first in first out, all data flow will be mixed storage and processing at this, if data jamming takes place in FGPA2 in the process of handling, need all passages of notice transmitting element to stop to send data, this moment, FGPA2 sent flow-control information bp2 by the second back-pressure interface to the 3rd translation interface unit F GPA3 of flow-control information centralized processing unit; And the data flow that has continued to block sends to receiving element by the 2nd SPI4.2 interface; If data are not blocked, FPGA1 just sends to receiving element with data flow by the 2nd SPI4.2 interface.
Be exactly specifically, receiving element receives the data flow that the second translation interface unit F GPA2 sends, because receiving element is according to end-to-end multichannel mode of operation, the a plurality of channel queues of its internal maintenance structure, each formation is all corresponding with the passage in the transmitting element, promptly, include the sign that shows own identity in the packet of transmitting element, such as packet header,, deposit information by formation then from this passage so receiving element can be classified to data stream according to this sign.When certain formation in the receiving element surpasses the thresholding of setting, need the passage of the transmitting element of this formation correspondence of transference to stop to send data, this moment, receiving element sent flow-control information by the first back-pressure interface to the 3rd translation interface unit F GPA3 of flow-control information centralized processing unit, and the data that receive are correspondingly processed; If do not surpass thresholding, receiving element is just handled accordingly to the data of this passage.
Be exactly specifically, the data flow of transmitting element is after sending receiving element to through interface conversion unit, collected flow-control information among the 3rd interface conversion unit FGPA3 of flow-control information centralized processing unit from the first translation interface unit F GPA1 and the second interface conversion unit FGPA2 and receiving element three, or any one flow-control information among the three, or any both flow-control informations among the three, the 3rd interface conversion unit FGPA3 receives these flow-control informations, and produce the congestion status information of each passage according to described flow-control information, the Flow Control state information that will comprise blocked state then sends to transmitting element, described transmitting element is according to the blocked state in the described Flow Control state information, and corresponding passage stops to send data in the notice transmitting element.
Promptly, the flow-control information maintenance module of FPGA3 has been stored each passage at the blocked state on the whole transfer path: when the flow-control information received from certain passage of the first interface conversion unit FPGA1 or receiving element, with the blocked state that the passage of data jamming takes place carry out set (such as, can represent the data of this passage to block with 0 sign, represent this passage to block with 1 sign, when the data of passage take place to block, change 0 of this passage into 1); When the flow-control information received from second interface conversion unit, with the blocked state set (changing 1 into) of all passages with 0; The flow-control information sending module produces the Flow Control state information according to the blocked state in the flow-control information maintenance module then, promptly extract sign and be set to 1 flow-control information, and described Flow Control state information is sent to transmitting element by the 4th back-pressure interface as the Flow Control state information from the flow-control information maintenance module.Like this, the flow-control information that sends for first interface conversion unit and receiving element is at the passage that data jamming takes place.
Because FPGA3 has adopted the mode of the flow-control information of the centralized collection first interface conversion unit FPGA1, the second interface conversion unit FPGA2 and receiving element, the thresholding of each channel queue is set the flying quality that need consider in the path in the receiving element, be that formation is when sending flow-control information, also need to stay and to receive (FPGA2 and FPGA1) all data cached abilities in the path, certainly this is that prior art need be considered, does not just do here and has set forth.
Transmitting element stops to send data flow according to the passage that data jamming has taken place the Flow Control state information notification, thereby reaches the purpose of channelizing Flow Control.When notify the passage that has blocked to send data flow once more as for transmitting element, existing ready-made solution is just no longer set forth among the present invention in the prior art.
By above-mentioned steps 11 to the processing procedure of step 15 as can be seen, the present invention collects from the flow-control information of interface conversion unit and/or receiving element by the unification of flow-control information centralized processing unit, and the Flow Control state information that will comprise blocked state passes to transmitting element, the passage that transmitting element has blocked according to described Flow Control state information notification stops to send data flow, thereby reaches the purpose of channelizing Flow Control.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (8)
1, a kind of device of realizing that flow-control information transmits is characterized in that described device comprises:
Transmitting element: have a plurality of independently passages, be used for sending data, and the passage that notification data takes place to block stops to send data by passage;
Interface conversion unit: be used to receive data and the output that described transmitting element sends, and when specified data takes place to block, produce and send flow-control information;
Receiving element: have a plurality of formations, described formation is corresponding with the passage of described transmitting element, is used to receive the data that described interface conversion unit sends over, and when specified data takes place to block, produces and send flow-control information;
Flow-control information centralized processing unit: be connected with described transmitting element, described receiving element and described interface conversion unit respectively, be used for the flow-control information that receiving interface converting unit and/or receiving element send, and, then described Flow Control state information is sent to described transmitting element according to described flow-control information generation Flow Control state information;
Wherein, the Flow Control state information that described transmitting element sends according to the flow-control information centralized processing unit, the passage that notification data takes place to block stops to send data.
2, a kind of device of realizing that flow-control information transmits according to claim 1 is characterized in that described interface conversion unit specifically comprises:
First interface conversion unit: link to each other with described transmitting element by a SPI4.2 interface, be used to receive the data that described transmitting element is sent, and when specified data takes place to block, produce and send flow-control information to described flow-control information centralized processing unit;
Second interface conversion unit: link to each other with described first interface conversion unit by the XAUI interface, link to each other with described receiving element by the 2nd SPI4.2 interface, be used to receive the data that described first interface conversion unit is sent, and when specified data takes place to block, produce and send flow-control information to described flow-control information centralized processing unit.
3, a kind of device of realizing that flow-control information transmits according to claim 2 is characterized in that described flow-control information centralized processing unit specifically comprises:
The 3rd interface conversion unit, be used to receive the flow-control information that described receiving element, described first interface conversion unit or described second interface conversion unit are sent, generate the Flow Control state information according to described flow-control information, and described Flow Control state information is sent to described transmitting element.
Interface unit comprises the first back-pressure interface, the second back-pressure interface, the 3rd back-pressure interface and the 4th back-pressure interface; Wherein, the first back-pressure interface is used for by this interface the flow-control information that described receiving element produces being passed to described the 3rd interface conversion unit; The second back-pressure interface: be used for the flow-control information that described second interface conversion unit produces being passed to the 3rd interface conversion unit by this interface; The 3rd back-pressure interface: be used for the flow-control information that described first interface conversion unit produces being passed to the 3rd interface conversion unit by this interface; The 4th back-pressure interface: be used for the Flow Control state information of the generation of described the 3rd interface conversion unit being passed to described transmitting element by this interface;
4, a kind of device of realizing that flow-control information transmits according to claim 3 is characterized in that described the 3rd interface conversion unit specifically comprises:
The flow-control information maintenance module: be used to store the blocked state of described transmitting element to the whole data transfer path upper channel of described receiving element, and with the blocked state set of described passage;
Flow-control information sending module: be used for generating the Flow Control state information, and described Flow Control state information is sent to transmitting element by the 4th back-pressure interface according to the blocked state of described flow-control information maintenance module.
5, a kind of device of realizing that flow-control information transmits according to claim 3, it is characterized in that, the described first back-pressure interface, the 3rd back-pressure interface and the 4th back-pressure interface interface for supporting that the multichannel flow-control information transmits, the interface of the described second back-pressure interface for not supporting that the multichannel flow-control information transmits.
6, a kind of method that realizes that flow-control information transmits is characterized in that, comprising:
A, transmitting element utilize passage to send the data to receiving element by interface conversion unit, when described interface conversion unit and/or receiving element take place to block in specified data, produce and send flow-control information to the flow-control information centralized processing unit;
The flow-control information that B, flow-control information centralized processing unit receiving interface converting unit and/or receiving element send, and, then described Flow Control state information is sent to transmitting element according to described flow-control information generation Flow Control state information;
C, transmitting element stop to send data according to the passage of described Flow Control state information notification generation data jamming.
7, a kind of method that realizes that flow-control information transmits according to claim 6 is characterized in that described steps A specifically comprises:
First interface conversion unit receives the data that transmitting element sends, and transmits to second interface conversion unit, and when specified data takes place to block, produces and send flow-control information to the flow-control information centralized processing unit;
Second interface conversion unit receives the data that first converting unit is sent, and transmits to receiving element, and when specified data takes place to block, produces and send flow-control information to the flow-control information centralized processing unit;
Receiving element receives the data that second converting unit sends, and when specified data takes place to block, produces and send flow-control information to the flow-control information centralized processing unit.
8, a kind of method that realizes that flow-control information transmits according to claim 6 is characterized in that described step B specifically comprises:
The flow-control information centralized processing unit receives flow-control information, with the blocked state set of respective channel;
Generate the Flow Control state information according to blocked state, and described Flow Control state information is sent to transmitting element.
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| CNB2006101270198A CN100512225C (en) | 2006-09-21 | 2006-09-21 | Device and method for realizing fluid control information transfer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010025628A1 (en) * | 2008-09-05 | 2010-03-11 | 华为技术有限公司 | Method, equipment and system for data transmission on physical layer. |
| CN102387085A (en) * | 2011-12-07 | 2012-03-21 | 盛科网络（苏州）有限公司 | Channelized flow control method |
| CN103763204A (en) * | 2013-12-31 | 2014-04-30 | 华为技术有限公司 | Flow control method and device |
| WO2016008399A1 (en) * | 2014-07-14 | 2016-01-21 | Hangzhou H3C Technologies Co., Ltd. | Flow control |
| WO2018121096A1 (en) * | 2016-12-29 | 2018-07-05 | 中兴通讯股份有限公司 | Flow control method, device, cu, du and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2010025628A1 (en) * | 2008-09-05 | 2010-03-11 | 华为技术有限公司 | Method, equipment and system for data transmission on physical layer. |
| CN102387085A (en) * | 2011-12-07 | 2012-03-21 | 盛科网络（苏州）有限公司 | Channelized flow control method |
| CN103763204A (en) * | 2013-12-31 | 2014-04-30 | 华为技术有限公司 | Flow control method and device |
| CN103763204B (en) * | 2013-12-31 | 2017-03-08 | 华为技术有限公司 | A kind of flow control methods and device |
| WO2016008399A1 (en) * | 2014-07-14 | 2016-01-21 | Hangzhou H3C Technologies Co., Ltd. | Flow control |
| CN105337895A (en) * | 2014-07-14 | 2016-02-17 | 杭州华三通信技术有限公司 | Network equipment host unit, network equipment daughter card and network equipment |
| CN105337895B (en) * | 2014-07-14 | 2019-02-19 | 新华三技术有限公司 | A kind of network equipment main computer unit, network equipment subcard and the network equipment |
| WO2018121096A1 (en) * | 2016-12-29 | 2018-07-05 | 中兴通讯股份有限公司 | Flow control method, device, cu, du and storage medium |
| CN108259362A (en) * | 2016-12-29 | 2018-07-06 | 中兴通讯股份有限公司 | flow control method, device, CU and DU |
| CN108259362B (en) * | 2016-12-29 | 2021-07-27 | 中兴通讯股份有限公司 | Flow control method, device, CU and DU |
| US11153783B2 (en) | 2016-12-29 | 2021-10-19 | Zte Corporation | Flow control method and apparatus, CU, DU and storage medium |
| US11606720B2 (en) | 2016-12-29 | 2023-03-14 | Zte Corporation | Flow control method and apparatus, CU, DU and storage medium |
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