CN106302201A - Flow control methods, equipment and system - Google Patents
Flow control methods, equipment and system Download PDFInfo
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- CN106302201A CN106302201A CN201510245796.1A CN201510245796A CN106302201A CN 106302201 A CN106302201 A CN 106302201A CN 201510245796 A CN201510245796 A CN 201510245796A CN 106302201 A CN106302201 A CN 106302201A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
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Abstract
The embodiment of the invention discloses a kind of flow control methods, equipment and system.This flow control methods includes: obtain the first message packets from receiving queue, stores the message packets sent to the second equipment by the first equipment in this receiving queue；In this receiving queue, delete this first message packets obtained, if the number of the message packets of storage is less than or equal to this first threshold in this receiving queue, send the data importing instruction being loaded with credit data to this first equipment.Second equipment imports this credit data in the internal memory of instruction directly renewal the first equipment by data, and the first equipment controls the number upper limit of its packet sent to the second equipment according to this credit data in internal memory；Completing the change of credit data from hardware view, eliminate the interaction time needed for software view change credit data, first equipment that is advanced by controls its time to the second equipment sending data bag according to this credit data, improves the utilization rate of the network bandwidth.
Description
Technical field
The present embodiments relate to network field, particularly relate to flow control methods, equipment and system.
Background technology
Message communicating between equipment, either based on transmission control protocol/Internet protocol
(Transmission Control Protocol/Internet Protocol is called for short TCP/IP)
The message of agreement or other supports communication protocol (such as socket interface protocol) is led to
Letter, need to be encapsulated as packet by message, and interaction data bag realizes message communicating between devices；
For ensureing to be properly received the probability of packet, it is determined that flow control mechanism, by this flow-control
Mechanism coordinates the equipment (transmitting terminal) speed to another equipment (receiving terminal) transmission data.
In flow control mechanism, generate when receiving terminal gets out receive data and be loaded with credit data (Credit
Data) message, and this message is packaged into packet (flow-control bag), send out to transmitting terminal
Give this flow-control bag；Transmitting terminal resolves this flow-control bag and obtains being loaded with disappearing of described credit data
Breath, so transmitting terminal according to this credit data determine upper once receive flow-control bag before permissible
The maximum number of byte sent.Transmitting terminal sends packet, when the byte number that the packet sent has
When reaching the maximum number of byte determined according to this credit data, transmitting terminal has to wait for receiving terminal and sends
This flow-control Packet analyzing of next flow-control Bao Bingcong go out next credit data, Cai Nenggen
According to next credit data, continue to send packet to receiving terminal.
As a example by queue even (Queue Pair is called for short QP), transmitting terminal expectation provides to receiving terminal
During business, set up a QP passage, the data of this business are encapsulated in the message, this is being disappeared
Breath encapsulation in the packet, sends this packet by this QP passage to receiving terminal；Receiving terminal is every
Receive a packet from transmitting terminal, a reception in a receiving queue can be consumed slow
Rushing lattice, this receiving queue is made up of multiple buffering lattice that receive.The packet receiving buffering lattice is employed
After program is taken away, can be reused for receiving the packet sent from transmitting terminal, it is possible to be used for receiving
The reception buffering lattice of packet are referred to as available buffering lattice.It addition, transmitting terminal and receiving terminal also set up
One QP passage for flow-control；Receiving terminal, whenever the quantity of its available buffering lattice reaches
During to the half of receiving queue, generate the packet (flow-control bag) being loaded with credit data, logical
Cross this QP passage and utilize QP transmission reception operation to transmit this flow-control bag to transmitting terminal；And then
Transmitting terminal parses credit data from this flow-control bag, and the credit data according to parsing determines
The number of the packet that at most can send to receiving terminal.
Therefore, use the mode of QP passage to transmit to be loaded with the flow-control bag of credit data and realize
Flow-control between receiving terminal and transmitting terminal, needs more software overhead (to include newly setting up QP
Passage, the packet encapsulation of receiving terminal, the packet of transmitting terminal resolve), it is delayed transmitting terminal and obtains
Get the time of credit data, thus extend twice and send it according to credit data control packet
Between interlude, reduce the utilization rate of the network bandwidth.
Summary of the invention
In view of this, embodiments provide a kind of flow control methods, equipment and system,
By the change of long-distance inner access instruction for the credit data of flow-control, complete from hardware view
The change of credit data, eliminates the interaction time needed for software view change credit data.
First aspect, embodiments provides a kind of flow control methods, described flow-control
Method includes:
Obtain the first message packets from receiving queue, described receiving queue stores by the first equipment
The message packets sent to the second equipment；
Described first message packets obtained is deleted in described receiving queue, if described reception
In queue, the number of the message packets of storage is less than or equal to described first threshold, to described first
Equipment sends the data importing instruction being loaded with credit data, and described credit data is write described first
Preset address in device memory, so that described first equipment is according to the institute of described preset address record
State credit data and determine the number upper limit of message packets sent to described second equipment, wherein,
Described credit data is the number of the message packets that the expectation of described receiving queue receives, described data
Import instruction and belong to long-distance inner access instruction.
In conjunction with first aspect, in the implementation that the first is possible, described to described first equipment
Send the data importing instruction being loaded with credit data, described credit data is write described first equipment
Preset address in internal memory, particularly as follows:
The memory source controller MRC of described second equipment sends institute to the MRC of described first equipment
State data and import instruction so that the MRC of described first equipment forwards described data to import instruction to institute
State the Memory Controller Hub MC of the first equipment, the MC of described first equipment import according to described data
Instruct and described credit data is write described preset address.
Can in conjunction with the first possible implementation of first aspect or the second of first aspect
The implementation of energy, in the implementation that the third is possible, described data import instruction and include:
The physical address that the mark of described first equipment is corresponding with described preset address.
Second aspect, embodiments provides a kind of second equipment, and described second equipment includes:
Data processing module, for obtaining the first message packets, described reception team from receiving queue
Row store the message packets sent to described second equipment by the first equipment；
Described data processing module, is additionally operable to delete described obtained in described receiving queue
One message packets, if the number of the message packets of storage is less than or equal in described receiving queue
Described first threshold, determines that credit data, described credit data are that the expectation of described receiving queue receives
The number of message packets；
Instruction sending module, imports for sending the data being loaded with credit data to described first equipment
Instruction, writes the preset address in described first device memory by described credit data, so that described
First equipment determines to described second equipment according to the described credit data of described preset address record
The number upper limit of the message packets sent, the importing instruction of described data belongs to long-distance inner access and refers to
Order.
In conjunction with second aspect, in the implementation that the first is possible, described instruction sending module,
Instruction is imported, by described credit number for sending the data being loaded with credit data to described first equipment
According to the preset address write in described first device memory, particularly as follows:
Described instruction sending module is the memory source controller MRC of described second equipment, for
The MRC of described first equipment sends described data and imports instruction so that the MRC of described first equipment
Forward described data to import the Memory Controller Hub MC of instruction extremely described first equipment, set by described first
Standby MC imports instruction according to described data and described credit data is write described preset address.
Can in conjunction with the first possible implementation of second aspect or the second of second aspect
The implementation of energy, in the implementation that the third is possible, described data import instruction and include:
The physical address that the mark of described first equipment is corresponding with described preset address.
The third aspect, embodiments provides a kind of flow control methods, described flow-control
Method includes:
Receive the data sent to the first equipment by the second equipment and import instruction, to number described in internal memory
According to importing the preset address write credit data that instruction is pointed to, wherein, described data import instruction and carry
Having described credit data, described data import instruction and belong to long-distance inner access instruction；
Described credit data according to described preset address record determines to described second equipment transmission
The number upper limit of message packets.
In conjunction with the third aspect, in the implementation that the first is possible, described reception is by the second equipment
Data to the first equipment transmission import instruction, import the pre-of instruction sensing to data described in internal memory
If address write credit data, specifically include:
The MRC of described first equipment receives the described data sent from the MRC of described second equipment and leads
Enter instruction, forward described data to import the Memory Controller Hub MC of instruction extremely described first equipment；
The MC of described first equipment imports instruction according to described data and writes institute to described preset address
State credit data.
Can in conjunction with the first possible implementation of the third aspect or the second of the third aspect
The implementation of energy, in the implementation that the third is possible, described data import instruction and include:
The physical address that the mark of described first equipment is corresponding with described preset address.
Fourth aspect, embodiments provides a kind of first equipment, and described first equipment includes:
Command reception module, refers to for receiving the data importing sent by the second equipment to the first equipment
Order, wherein, described data import instruction and are loaded with credit data, and described data import instruction and belong to remote
Journey internal storage access instructs；
Instruction respond module, writes for importing the preset address of instruction sensing to data described in internal memory
Enter described credit data；
Message packets limits module, for the described credit data according to described preset address record
Determine the number upper limit of the message packets sent to described second equipment.
In conjunction with fourth aspect, in the implementation that the first is possible, described command reception module is
The memory source controller MRC of the first equipment, for receiving the number sent from the MRC of the second equipment
According to importing instruction, described data are forwarded to import the Memory Controller Hub MC of instruction extremely described first equipment；
Described instruction respond module is the MC of described first equipment, refers to for importing according to described data
Make and write described credit data to described preset address.
Can in conjunction with the first possible implementation of fourth aspect or the second of fourth aspect
The implementation of energy, in the implementation that the third is possible, described data import instruction and include:
The physical address that the mark of described first equipment is corresponding with described preset address.
5th aspect, embodiments provides a kind of system, and described system includes the first equipment
With the second equipment, described first equipment and described second equipment communication connection；
Described second equipment, for obtaining the first message packets, described reception team from receiving queue
Row store the described message packets sent to described second equipment by described first equipment；
Described second equipment, for deleting described first message obtained in described receiving queue
Packet, if the number of the message packets of storage is less than or equal to described the in described receiving queue
One threshold value, sends the data importing instruction being loaded with credit data, described credit to described first equipment
Data are the number of the message packets that the expectation of described receiving queue receives, and described data import instruction
Belong to long-distance inner access instruction；
Described first equipment, writes it for importing instruction according to described data by described credit data
Preset address in internal memory, determines to described according to the described credit data of described preset address record
The number upper limit of the message packets that the second equipment sends.
In conjunction with the 5th aspect, in the implementation that the first is possible, described first equipment, it is used for
Import instruction according to described data and described credit data is write the preset address in its internal memory, specifically
For:
Described first equipment, for by described first equipment memory source controller MRC receive from
The described data that the MRC of described second equipment sends import instruction, forward described data to import instruction
To the Memory Controller Hub MC of described first equipment, by the MC of described first equipment according to described data
Import instruction and write described credit data to described preset address.
Can in conjunction with the first possible implementation of the 5th aspect or the second of the 5th aspect
The implementation of energy, in the implementation that the third is possible, described data import instruction and include:
The physical address that the mark of described first equipment is corresponding with described preset address.
By such scheme, the second equipment imports instruction by data and directly updates the interior of the first equipment
This credit data in depositing, the first equipment controls it according to this credit data in internal memory and sets to second
The number of the standby packet at most sent；Complete the change of credit data from hardware view, eliminate
Interaction time needed for software view change credit data, first equipment that is advanced by is according to this credit number
According to control its to the time of the second equipment sending data bag, improve the utilization rate of the network bandwidth.
Accompanying drawing explanation
Fig. 1 is the system logic structure schematic diagram of the application scenarios of flow control methods；
A kind of exemplary flow of the Fig. 2 flow control methods for providing according to one embodiment of the invention
Cheng Tu；
Fig. 3 is the logical structure schematic diagram provided according to second equipment 300 of one embodiment of the invention；
A kind of exemplary flow of the Fig. 4 flow control methods for providing according to one embodiment of the invention
Figure；
Fig. 5 is to the one of step S401 optional refinement flow chart in Fig. 4；
Fig. 6 is the logical structure signal provided according to first equipment 600 of one embodiment of the invention
Figure.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical scheme in the embodiment of the present invention
It is clearly and completely described, it is clear that described embodiment is a part of embodiment of the present invention,
Rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art exist
Do not make the every other embodiment obtained under creative work premise, broadly fall into the present invention and protect
The scope protected.
System 100 as shown in Figure 1, including the first equipment 101 and the second equipment 102.Need
Bright, in " the first equipment " " second " in " first " and " the second equipment ", for generation
Refer to, distinguish for equipment.
For the first equipment 101 in Fig. 1, the first equipment 101 has processor 1013, internal memory
Resouce controller (Memory Resources Controller is called for short MRC) 1011, internal memory control
Device processed (Memory Controller is called for short MC) 1012 and internal memory 1014.First equipment 101
In, processor 1013 passes through total with memory source controller 1011 and/or Memory Controller Hub 1012
Line connects, or memory source controller 1011 and/or Memory Controller Hub 1012 and this processor
1013 are directly electrically connected with；Alternatively, memory source controller 1011 and/or Memory Controller Hub
1012 are integrated in this processor 1013, the memory source controller being integrated in processor 1013
1011 are directly electrically connected with this processor 1013, are integrated into the Memory control in processor 1013
Device 1012 is directly electrically connected with this processor 1013.Memory Controller Hub 1012, at processor
Under the control of 1013, local internal memory (i.e. internal memory 1014) is carried out reading or the write of data.In
Deposit resouce controller 1011, under the control of processor 1013, remote memory is carried out the reading of data
Taking or write, illustrate, the internal memory 1024 of the second equipment 102 is relative to the first equipment 101
For remote memory.No matter local internal memory or remote memory broadly falls into internal memory, is used for storing data.
For the second equipment 102 in Fig. 1, have processor 1023, memory source controller 1021,
Memory Controller Hub 1022 and internal memory 1024.In second equipment 102, processor 1023 provides with internal memory
Source controller 1021 and/or Memory Controller Hub 1022 are connected by bus, or memory source control
Device 1021 processed and/or Memory Controller Hub 1022 are directly electrically connected with this processor 1023；Optional
Ground, the memory source controller 1021 being integrated in processor 1023 is straight with this processor 1023
Connect electric connection, Memory Controller Hub 1022 and this processor 1023 being integrated in processor 1023
Directly it is electrically connected with.Memory Controller Hub 1022, to local internal memory under the control of processor 1023
(i.e. internal memory 1024) carries out reading or the write of data.Memory source controller 1021, at place
Under the control of reason device 1023, remote memory is carried out reading or the write of data, illustrates, the
Internal memory 1014 in one equipment 101 is remote memory relative to the second equipment 102.The most local
Internal memory or remote memory broadly falls into internal memory, is used for storing data.
In system 100, the first equipment 101 communicates to connect with the second equipment 102, the first equipment 101
Data interaction is realized alternately by packet with the second equipment 102.Wherein, business is handed over
Mutually, the first equipment 101 and the second equipment 102 realize service interaction by the way of interacting message.
Expect to send the data instance of business to the second equipment 102 with the first equipment 101, first sets
The data of this business are encapsulated in the message by the processor 1013 of standby 101, then this message are encapsulated
In the packet, the packet of storage enclosure successively in buffer area is being sent；If expectation is to from first
The packet that equipment 101 sends to the second equipment 102 carries out flow-control, it is determined that up-to-date letter
By data, the first equipment 101 controls hardware transceiver module to the second equipment according to described credit data
102 these packets sent, the number of this packet of transmission is at most described credit data；Right
Ying Di, the hardware transceiver module of the second equipment 102 receives the packet that the first equipment 101 sends,
And store, in the receiving queue of the second equipment 102, the packet received, packet is solved
Analysing and parse the message being loaded with business datum, the processor 1023 of the second equipment 102 is again from this
Message parses the data of business.Similarly, second equipment 102 that can realize is to the first equipment 101
The data of transmission business, do not repeat them here.
One embodiment of the invention, sets up queue even (Queue Pair is called for short QP) passage for business,
By business datum mutual between this QP channel transfer the first equipment and second equipment, definition should
Business datum is the data of business.By the first equipment as a example by the second equipment offer business, by this
QP channel transfer is loaded with the packet of this business datum；In transmitting procedure, use flow-control side
The number of the method packet to sending to the second equipment from the first equipment is controlled, it is achieved flow control
System.
For realizing this flow-control, the internal memory of the first equipment distributes one section of memory headroom, this section
Memory headroom is used for storing credit data, and the physical address of this section of memory headroom is defined as the first thing
Reason address；First physical address of this section of memory headroom is carried out address mapping, and address maps and obtains
The virtual address of this section of memory headroom, the processor of the first equipment can access according to this virtual address should
Credit data (such as reads this credit data according to this virtual address)；Alternatively, the first equipment
Having memory management unit (Memory Management Unit, MMU), this processor is to this letter
During the access of data, MMU complete virtual address and reflect to the address of the first physical address
Penetrate.It addition, also the first physical address of this section of memory headroom and the mark of the first equipment are added
Close, generate the packet of encryption data, send this packet to the second equipment；Second equipment is from this
Packet parses the first physical address and the mark of the first equipment of encryption, then deciphering obtains:
First physical address and the mark of the first equipment.
It addition, distribute one section of physical address in advance in the second equipment, by this section of distribution physically
Location is defined as the second physical address.After second equipment deciphering obtains the first physical address, determine first
Physical address and the mapping relations of the second physical address.
At the first equipment during the second equipment sends the packet of the business that is loaded with, the second equipment
The packet received from the first equipment is sequentially stored in receiving queue, often receives from the first equipment
To a packet, just this packet is stored in reception buffering lattice of this receiving queue
In, i.e. one packet needs reception buffering lattice to store；It addition, the application of this business, can
Buffer lattice from the reception of this receiving queue, read and take away the packet of this business；Removed number
According to the reception buffering lattice of bag, can continue for receiving the packet sent from the first equipment；When described
The number of the message packets in receiving queue is reduced to less than or equal to institute from more than first threshold
When stating first threshold, receiving queue i.e. can be used to receive the reception buffering lattice of packet from less than the
Two threshold values rise to more than or equal to Second Threshold (alternatively, first threshold and Second Threshold and
The total number receiving buffering lattice comprised equal to receiving queue) time, determine a credit data, and
Generating a secondary data and import instruction, these data import instruction and include the second physical address and the first equipment
Mark, these data import instruction and also include the credit data that determines, record in this credit data:
Described second equipment expectation is received by the number of the message packets that queue receives；Second equipment root
Import the second physical address in instruction to determine that these data import instruction not to be access the according to these data
These data are imported the second thing in instruction by the internal memory of two equipment but the internal memory of first equipment of access
Reason address replaces with: with the first physical address of this second physical address map；Then, directly to
It is true that this first physical address that in the internal memory of the first equipment, these data importing instruction is pointed to writes this
Fixed credit data.Alternatively, when interior second equipment memory controller (memory controller,
Be called for short MC) recognize these data import instruction for point to the second physical address long-distance inner access refer to
When making, these data are imported instruction and turns by the memory source controller (Memory of the second equipment
Resources Controller, is called for short MRC) process；These data are led by the MRC of the second equipment
Enter the second physical address in instruction and replace with the first physical address of correspondence, then by after the replacement of address
These data import instruction and send to the MRC of the first equipment；The MRC of the first equipment recognizes this number
According to importing the local internal memory that described first physical address is the first equipment of instruction sensing physically
During location, it is transmitted to data importing and instructs the MC to the first equipment；The MC of the first equipment is according to this number
This credit data determined is write with described in renewal to described first physical address according to importing instruction
The credit data of the first physical address Central Plains storage.
Alternatively, this long-distance inner access instruction includes that load instruction and store instruct, this number
Instruct for store according to importing instruction.Second equipment is according to internal memory default pointing to the first equipment
The store instruction of location, it is possible to this preset address directly carries out long-range data write, and updating should
The credit data of preset address storage.
In the present embodiment, the first equipment is being sent in the packet of the business that is loaded with to the second equipment,
Realize flow-control for controlling the number of the packet of transmission, distribute in the internal memory of the first equipment
One section of memory headroom, this section of memory headroom is for storing one section of memory headroom of credit data；Should
After section the first physical address of memory headroom and identification notification second equipment of the first equipment, second
Equipment can directly access this section of memory headroom by long-distance inner access instruction, changes this section of internal memory sky
Between storage credit data.The process of the credit data of the second equipment change this section memory headroom storage
In, broadly fall into the data transmission of hardware view, need allocation buffer to receive relative to QP and be loaded with
The packet of credit data, parse credit data from packet, again by the processor of the first equipment
Write credit data at this section of memory headroom, reduce in this section of memory headroom of the first equipment more
The time delay of new credit data, is advanced by and continues to send to the second equipment to be loaded with industry according to this credit data
The transmission time of the packet of business, it is possible to more efficiently utilize the network bandwidth.
One embodiment of the invention, it is provided that a kind of flow control methods, Fig. 2 shows according to this enforcement
The method that example provides realize flow process, but for the ease of describing, Fig. 2 illustrate only and the present invention
The part that embodiment is relevant.Described flow control methods includes step S201 and step S202.
Message packets described in the present embodiment is: the first equipment provides the mistake of business to the second equipment
Cheng Zhong, the first equipment the packet sent to the second equipment；This packet is loaded with the number of this business
According to.
Distributing one section of memory headroom in advance in internal memory in the first equipment, this section of memory headroom is used for
Storage credit data, the address being herein referred to as addressable this section of memory headroom is preset address, such as,
Described preset address is the physical address (the first the most above-mentioned physical address) of this section of memory headroom,
The most such as, described preset address be this first physical address is carried out address mapping after obtain virtual
Address.
If the first physical address that this preset address is this section of memory headroom, this preset address is entered
Row address maps, and obtains the virtual address of this section of memory headroom；The processor of the first equipment can basis
This virtual address accesses this section of memory headroom.
It addition, determine the mark of the first equipment so that the second equipment can be according to the mark of the first equipment
Know and have access to the first equipment；First equipment, in its communication with the second equipment, will be loaded with first
Identification notification second equipment of physical address and the first equipment；Then, the second equipment can be according to finger
Being somebody's turn to do in the internal memory of the first equipment is directly accessed to the long-distance inner access instruction of the first physical address
Section memory headroom.
Step S201, obtains the first message packets from receiving queue, stores in described receiving queue
The message packets sent to the second equipment by the first equipment.Wherein, described first message packets
For being stored in the data that application in this receiving queue, business is being taken away from this receiving queue
Bag.
Step S202, deletes described first message packets obtained in described receiving queue,
If the number of the message packets of storage is less than or equal to described first threshold in described receiving queue,
Send the data importing instruction being loaded with credit data to described first equipment, described credit data is write
Enter the preset address in described first device memory, so that described first equipment is according to described default
The described credit data of location record determines the number of the message packets sent to described second equipment
The upper limit, wherein, described credit data is the individual of the message packets of described receiving queue expectation reception
Number, described data import instruction and belong to long-distance inner access instruction.
First equipment is during the second equipment offer business, and the first equipment sends to the second equipment
It is loaded with the message packets of this business；As, use QP to carry out between the first equipment and the second equipment
The transmitting-receiving of message packets, will expect in the first equipment that the message packets sent to the second equipment adds
Add the transmit queue of the first equipment, this transmit queue by multiple send buffering lattice form, each should
Send buffering lattice and can cache a packet to be sent, this message packets to be sent can be depended on
Secondary be buffered in this transmission buffering lattice in；According to the letter of storage in the preset address of the internal memory of the first equipment
The number that at most can send this message packets to the second equipment is determined by data, individual according to determine
The transmission of message packets in numerical control transmit queue.
Correspondingly, the second equipment has receiving queue, and this receiving queue is received buffering lattice group by multiple
Becoming, this reception each buffering lattice can cache a packet received, therefore at the first equipment to the
During two equipment offer business, the message packets of reception is buffered in this by the second equipment successively
Receive in buffering lattice.
In second equipment, the application of this business can take message packets away (from this receiving queue
Removed message packets is the first packet), take this first message packets This move away
Including obtaining the first message packets from reception buffering lattice, deleting storage in this reception buffering lattice
First message packets；The application of this business often receives buffering lattice from one and takes the first message count away
According to bag, this reception buffering lattice just can be reused for caching the message packets received；Therefore,
During the application of this business continues to take message packets away from reception buffering lattice, may go out
The number of the message packets in existing described receiving queue from decreasing below more than first threshold or
Equal to this event of described first threshold, this event once occurs, then in described receiving queue
When the number of message packets is reduced to less than or equal to described first threshold, trigger data imports and refers to
Order, also can be reused for receiving the number receiving buffering lattice of message packets from less than the second threshold
Value rise to more than or equal to Second Threshold (first threshold and Second Threshold and equal to receiving queue
Comprise receive buffering lattice total number) time trigger these data import instruction；These data import instruction
Parameter include: the first physical address and the mark of the first equipment.Therefore, this second equipment can
Import instruction according to these data and directly write credit data to the preset address of the internal memory of the first equipment,
First equipment determines according to this this credit data write: once update this letter on the second equipment
Before data, the number of the message packets that the first equipment at most can send to the second equipment.With
This analogizes, the second equipment, and the number of the message packets in each described receiving queue is from more than
When one threshold value is reduced to less than or equal to described first threshold, all triggers a secondary data and import instruction,
The credit number of storage in the preset address of the internal memory that instruction updates the first equipment is imported by these data
According to；After credit data updates every time, the first equipment can determine according to the credit data updated every time can
To the number of the message packets that the second equipment sends.Realize the renewal according to credit data, control
The number of the message packets that the first equipment different time sections can send to the second equipment, it is achieved first
Equipment flow-control when the second equipment provides business.
During it addition, initially set up QP passage between the first device and the second device, the second equipment
Receiving queue in can be used for receiving the number receiving buffering lattice of packet less than or equal to described
First threshold, step S202 trigger data imports instruction, imports instruction replacement the by these data
The credit data of storage in the preset address of the internal memory of one equipment.
It addition, again enable after the QP channel interrupt set up between the first equipment and the second equipment,
If the number receiving buffering lattice that can be used for receiving packet in the receiving queue of the second equipment is little
In or equal to described first threshold, step S202 trigger data imports instruction, is led by these data
Enter the credit data of storage in the preset address of the internal memory that instruction updates the first equipment.
In the present embodiment, import data to instruction transmission extremely to using which kind of mode to realize the second equipment
First equipment does not limits；Such as, the second equipment directly to the first equipment send these data import refer to
Order；For another example, through other forwarding units (such as router, switch etc.), the second equipment is sent
These data import instruction and are forwarded to the first equipment.
It addition, the present embodiment is to being imported instruction by these data of which response device in the first equipment and inciting somebody to action
The preset address of credit data write internal memory does not limits；As, should by the response of memory source controller
Data import instruction and forward the importing of these data to instruct the Memory Controller Hub to the first equipment, by first
Credit data is also write the preset address of internal memory by the Memory Controller Hub of equipment；As, by the first equipment
Processor respond these data and import instruction, and control Memory Controller Hub credit data write internal memory
Preset address.
Alternatively, the flow control methods providing Fig. 2 does an optional refinement, described to described the
One equipment sends and is loaded with the data of credit data and imports instruction, by described credit data write described the
Preset address in one device memory, particularly as follows:
The memory source controller MRC of described second equipment sends institute to the MRC of described first equipment
State data and import instruction so that the MRC of described first equipment forwards described data to import instruction to institute
State the Memory Controller Hub MC of the first equipment, the MC of described first equipment import according to described data
Instruct and described credit data is write described preset address.
Specifically, in the second equipment, one section of physical address is distributed in advance, by this section of physics of distribution
Address is defined as the second physical address.First first equipment send the mark of the first equipment to the second equipment
Know and the first physical address；After second equipment obtains the first physical address, determine the first physical address
Mapping relations with the second physical address.
Second equipment expects the credit data updating in the internal memory of the first equipment every time, then trigger described
Data import instruction, and it is the second physical address that the described data of triggering import the address of instruction sensing,
The scene triggering the importing instruction of these data is not detailed, retouching referring specifically to above-described embodiment herein
State.Second equipment when recognizing the second physical address for pointing to the physical address of local internal memory,
Described data are imported the second physical address in instruction and replaces with the first physical address of correspondence, will
Data after address is replaced import the memory source controller instructing transmission extremely described first equipment, institute
The memory source controller stating the first equipment recognizes described the first of these data importing instruction sensing
When physical address is the address of local internal memory of the first equipment, it is transmitted to data and imports instruction to first
The Memory Controller Hub of equipment；The Memory Controller Hub of the first equipment imports instruction to internal memory according to these data
The first physical address (corresponding with preset address) write these data and import the credit number that is loaded with of instruction
According to.
Alternatively, described data importing instruction includes: the mark of described first equipment is pre-with described
If the physical address that address is corresponding.Wherein, corresponding with described preset address physical address is above-mentioned
The first physical address.That is, if described preset address is the first physical address of the first equipment,
The physical address that the most described preset address includes with the importing instruction of described data is identical, if described pre-
If address is and the virtual address of this first physical address map, the most described preset address and described number
The physical address included according to importing instruction has corresponding relation.
Wherein, being designated of described first equipment: when the first equipment and the communication of the second equipment, be used for
Second equipment finds address or the identity of the first equipment.
Specifically, the second equipment can be according to described first equipment of these data importing instruction sensing
Mark, it is intended that the first equipment performs these data and imports instruction；Basis and described preset address further
The first corresponding physical address, it is possible to point to the preset address of the internal memory of the first equipment, and pre-to this
If address performs the write of described credit data.
One embodiment of the invention, it is provided that a kind of second equipment 300, Fig. 3 shows according to this enforcement
The logical structure schematic diagram of this second equipment 300 that example provides, but for the ease of describing, Fig. 3 is only
Show the part relevant to the embodiment of the present invention.
Described second equipment 300 includes: data processing module 301, for obtaining from receiving queue
First message packets, stores in described receiving queue and is sent to described second equipment by the first equipment
Message packets；
Described data processing module 301, is additionally operable to delete the institute obtained in described receiving queue
State the first message packets, if in described receiving queue storage message packets number less than or
Equal to described first threshold, determine that credit data, described credit data are the expectation of described receiving queue
The number of the message packets received；
Instruction sending module 302, for sending the data being loaded with credit data to described first equipment
Import instruction, described credit data is write the preset address in described first device memory, so that
Described first equipment determines to described second according to the described credit data of described preset address record
The number upper limit of the message packets that equipment sends, described data import instruction and belong to long-distance inner visit
Ask instruction.
Alternatively, described instruction sending module 302, it is loaded with letter for sending to described first equipment
Importing instruction by the data of data, write by described credit data in described first device memory is pre-
If address, particularly as follows:
Described instruction sending module 302 is the memory source controller MRC of described second equipment, uses
Instruction is imported so that described first equipment in sending described data to the MRC of described first equipment
MRC forwards described data to import instruction to the Memory Controller Hub MC of described first equipment, by described the
The MC of one equipment imports instruction according to described data and described credit data is write described preset address.
Alternatively, described data importing instruction includes: the mark of described first equipment is pre-with described
If the physical address that address is corresponding.
One embodiment of the invention, it is provided that a kind of flow control methods, Fig. 4 shows according to this enforcement
The method that example provides realize flow process, but for the ease of describing, Fig. 4 illustrate only and the present invention
The part that embodiment is relevant.Described flow control methods includes step S401 and step S402.
Distributing one section of memory headroom in advance in internal memory in the first equipment, this section of memory headroom is used for
Storage credit data, the address being herein referred to as addressable this section of memory headroom is preset address, such as,
Described preset address is the physical address (the first the most above-mentioned physical address) of this section of memory headroom,
The most such as, described preset address be this first physical address is carried out address mapping after obtain virtual
Address.；
If the first physical address that this preset address is this section of memory headroom, this preset address is entered
Row address maps, and obtains the virtual address of this section of memory headroom；The processor of the first equipment can basis
This virtual address accesses this section of memory headroom.
It addition, determine the mark of the first equipment so that the second equipment can be according to the mark of the first equipment
Know and have access to the first equipment；First equipment, in its communication with the second equipment, will be loaded with first
Identification notification second equipment of physical address and the first equipment；Then, the second equipment can be according to finger
Being somebody's turn to do in the internal memory of the first equipment is directly accessed to the long-distance inner access instruction of the first physical address
Section memory headroom.
Step S401, receives and is imported instruction by the second equipment to the data that the first equipment sends, inwardly
Data described in depositing import the preset address described credit data of write that instruction is pointed to, wherein, described
Data import instruction and are loaded with credit data, and the importing instruction of described data belongs to long-distance inner access and refers to
Order；
Step S402, determines to described second according to the described credit data of described preset address record
The number upper limit of the message packets that equipment sends.
In second equipment, the process of message packets is taken in the application of business away from receiving buffering lattice
In, the number of the message packets in each described receiving queue is little from being reduced to more than first threshold
In or equal to described first threshold time, all trigger one secondary data import instruction；That is, can be reused for
Receive message packets receive buffering lattice number from less than Second Threshold rise to more than or etc.
When Second Threshold, trigger these data import instruction, wherein, first threshold and Second Threshold and etc.
In the total number receiving buffering lattice that receiving queue comprises.First equipment imports instruction according to these data
The credit data being loaded with, the credit data of storage in the preset address of the internal memory updating the first equipment；
After credit data updates every time, the first equipment can determine according to the credit data updated every time can be to the
The number of the message packets that two equipment send.Realize the renewal according to credit data, control first
The number of the message packets that equipment different time sections can send to the second equipment, it is achieved the first equipment
Flow-control when the second equipment provides business.
During it addition, initially set up QP passage between the first device and the second device, the second equipment
Receiving queue in can be used for receiving the number receiving buffering lattice of packet less than or equal to described
First threshold, the second equipment trigger data imports instruction；Step S401 receives from the second equipment
The data sent to the first equipment import instruction, import instruction by these data and reset the first equipment
The credit data of storage in the preset address of internal memory.
It addition, again enable after the QP channel interrupt set up between the first equipment and the second equipment,
If the number receiving buffering lattice that can be used for receiving packet in the receiving queue of the second equipment is little
In or equal to described first threshold, the second equipment trigger data imports instruction；Step S401 receives
Import instruction to the data sent to the first equipment from the second equipment, import instruction more by these data
The credit data of storage in the preset address of the internal memory of new first equipment.
Alternatively, step S401 does a concrete optional refinement, sees Fig. 5, and described reception is by second
The data that equipment sends to the first equipment import instruction, import instruction to data described in internal memory and point to
Preset address write credit data, specifically include step S4011 and step S4012.
Step S4011, the MRC of described first equipment receives and sends from the MRC of described second equipment
Described data import instruction, forward described data to import instruction to the internal memory control of described first equipment
Device MC processed；
Step S4012, the MC of described first equipment imports instruction according to described data and presets to described
Address writes described credit data.
Alternatively, described data importing instruction includes: the mark of described first equipment is pre-with described
If the physical address that address is corresponding.
One embodiment of the invention, it is provided that a kind of first equipment 600, Fig. 6 shows according to this enforcement
The logical structure schematic diagram of this first equipment 600 that example provides, but for the ease of describing, Fig. 6 is only
Show the part relevant to the embodiment of the present invention.
Described first equipment 600 includes:
Command reception module 601, leads for receiving the data sent by the second equipment to the first equipment
Entering instruction, wherein, described data import instruction and are loaded with credit data, and described data import instruction and belong to
In long-distance inner access instruction；
Instruction respond module 602, for point to the importing instruction of data described in internal memory defaultly
Location writes described credit data；
Message packets limits module 603, for the described credit according to described preset address record
Data determine the number upper limit of the message packets sent to described second equipment.
Alternatively, described command reception module 601 is the memory source controller MRC of the first equipment,
Import instruction for receiving the data sent from the MRC of the second equipment, forward described data to import and refer to
The Memory Controller Hub MC of order extremely described first equipment；
Described instruction respond module 602 is the MC of described first equipment, for leading according to described data
Enter instruction and write described credit data to described preset address.
Alternatively, described data importing instruction includes: the mark of described first equipment is pre-with described
If the physical address that address is corresponding.
One embodiment of the invention, it is provided that a kind of system 100, described system 100 includes the first equipment
101 and second equipment 102, described first equipment 101 and described second equipment 102 communicate to connect；
Described second equipment 102, for obtaining the first message packets from receiving queue, described in connect
Receive in queue and store the described message sent to described second equipment 102 by described first equipment 101
Packet；Wherein, described first message packets is to be stored in this receiving queue, business
The packet taken away from this receiving queue of application；
Described second equipment 102, for deleting described first obtained in described receiving queue
Message packets, if the number of the message packets of storage is less than or equal to institute in described receiving queue
State first threshold, send the data importing instruction being loaded with credit data to described first equipment 101,
Described credit data is the number of the message packets that the expectation of described receiving queue receives, described data
Import instruction and belong to long-distance inner access instruction；
Described first equipment 101, writes described credit data for importing instruction according to described data
Enter the preset address in its internal memory, according to the described credit data of described preset address record determine to
The number upper limit of the message packets that described second equipment 102 sends.
Alternatively, described first equipment 101, for importing instruction by described letter according to described data
The preset address in its internal memory is write by data, particularly as follows:
Described first equipment 101, for by the memory source controller of described first equipment 101
1011 receive the described data sent from the memory source controller 1021 of described second equipment imports
Instruction, forwards described data to import the Memory Controller Hub 1022 of instruction extremely described first equipment, by institute
The Memory Controller Hub 1022 stating the first equipment imports instruction to described preset address according to described data
Write described credit data.
Alternatively, described data importing instruction includes: the mark of described first equipment is pre-with described
If the physical address that address is corresponding.
In several embodiments provided herein, it should be understood that disclosed system, if
Standby and method, can realize by another way.Such as, apparatus embodiments described above
It is only schematically, such as, described module and the division of unit, it is only a kind of logic function
Divide, it is achieved time can have other dividing mode, the most multiple modules or unit or assembly are permissible
In conjunction with or be desirably integrated into another system, or some features can be ignored, or does not performs.Separately
A bit, shown or discussed coupling each other or direct-coupling or communication connection can be logical
Cross INDIRECT COUPLING or the communication connection of some interfaces, equipment or module, can be electrical, machinery or
Other form.
The described module illustrated as separating component can be or may not be physically separate
, the parts as module can be or may not be physical module, i.e. may be located at one
Place, or can also be distributed on multiple mixed-media network modules mixed-media.Can be selected it according to the actual needs
In some or all of module realize the purpose of the present embodiment scheme.
It addition, each functional module in each embodiment of the present invention can be integrated in one processes mould
In block, it is also possible to be that modules is individually physically present, it is also possible to two or more module collection
In Cheng Yi module.Above-mentioned integrated module both can realize to use the form of hardware, it is also possible to
The form using hardware to add software function module realizes.
The above-mentioned form with software function module realizes integrated module, can be stored in a calculating
In machine read/write memory medium.Above-mentioned software function module is stored in a storage medium, including
Some instructions with so that computer equipment (can be personal computer, server, or
The network equipment etc.) perform the part steps of method described in each embodiment of the present invention.And aforesaid deposit
Storage media includes: (English: Read-Only Memory is called for short for portable hard drive, read only memory
ROM), random access memory (English: Random Access Memory, to be called for short RAM), magnetic
The various medium that can store program code such as dish or CD.
Last it is noted that above example is only in order to illustrate technical scheme, rather than
It is limited；Although the present invention being described in detail with reference to previous embodiment, this area
Those of ordinary skill is it is understood that it still can be to the technical scheme described in foregoing embodiments
Modify, or wherein portion of techniques feature is carried out equivalent；And these are revised or replace
Change, do not make the essence of appropriate technical solution depart from the protection model of various embodiments of the present invention technical scheme
Enclose.
Claims (15)
1. a flow control methods, it is characterised in that described flow control methods includes:
Obtain the first message packets from receiving queue, described receiving queue stores by the first equipment
The message packets sent to the second equipment；
Described first message packets obtained is deleted in described receiving queue, if described reception
In queue, the number of the message packets of storage is less than or equal to described first threshold, to described first
Equipment sends the data importing instruction being loaded with credit data, and described credit data is write described first
Preset address in device memory, so that described first equipment is according to the institute of described preset address record
State credit data and determine the number upper limit of message packets sent to described second equipment, wherein,
Described credit data is the number of the message packets that the expectation of described receiving queue receives, described data
Import instruction and belong to long-distance inner access instruction.
Method the most according to claim 1, it is characterised in that described set to described first
Preparation send the data being loaded with credit data to import instruction, described credit data write described first is set
Preset address in standby internal memory, particularly as follows:
The memory source controller MRC of described second equipment sends institute to the MRC of described first equipment
State data and import instruction so that the MRC of described first equipment forwards described data to import instruction to institute
State the Memory Controller Hub MC of the first equipment, the MC of described first equipment import according to described data
Instruct and described credit data is write described preset address.
Method the most according to claim 1 and 2, it is characterised in that described data import
Instruction includes: the physical address that the mark of described first equipment is corresponding with described preset address.
4. an equipment, it is characterised in that described second equipment includes:
Data processing module, for obtaining the first message packets, described reception team from receiving queue
Row store the message packets sent to described second equipment by the first equipment；
Described data processing module, is additionally operable to delete described obtained in described receiving queue
One message packets, if the number of the message packets of storage is less than or equal in described receiving queue
Described first threshold, determines that credit data, described credit data are that the expectation of described receiving queue receives
The number of message packets；
Instruction sending module, imports for sending the data being loaded with credit data to described first equipment
Instruction, writes the preset address in described first device memory by described credit data, so that described
First equipment determines to described second equipment according to the described credit data of described preset address record
The number upper limit of the message packets sent, the importing instruction of described data belongs to long-distance inner access and refers to
Order.
Second equipment the most according to claim 4, it is characterised in that described instruction sends
Module, imports instruction, by described for sending the data being loaded with credit data to described first equipment
Credit data writes the preset address in described first device memory, particularly as follows:
Described instruction sending module is the memory source controller MRC of described second equipment, for
The MRC of described first equipment sends described data and imports instruction so that the MRC of described first equipment
Forward described data to import the Memory Controller Hub MC of instruction extremely described first equipment, set by described first
Standby MC imports instruction according to described data and described credit data is write described preset address.
6. according to the second equipment described in claim 4 or 5, it is characterised in that described data
Importing instruction includes: the physical address that the mark of described first equipment is corresponding with described preset address.
7. a flow control methods, it is characterised in that described flow control methods includes:
Receive the data sent to the first equipment by the second equipment and import instruction, to number described in internal memory
According to importing the preset address write credit data that instruction is pointed to, wherein, described data import instruction and carry
Having described credit data, described data import instruction and belong to long-distance inner access instruction；
Described credit data according to described preset address record determines to described second equipment transmission
The number upper limit of message packets.
Flow control methods the most according to claim 7, it is characterised in that described reception
The data sent to the first equipment by the second equipment import instruction, import to data described in internal memory and refer to
The preset address write credit data that order is pointed to, specifically includes:
The MRC of described first equipment receives the described data sent from the MRC of described second equipment and leads
Enter instruction, forward described data to import the Memory Controller Hub MC of instruction extremely described first equipment；
The MC of described first equipment imports instruction according to described data and writes institute to described preset address
State credit data.
9. according to the flow control methods described in claim 7 or 8, it is characterised in that described
Data import instruction and include: the physics that the mark of described first equipment is corresponding with described preset address
Address.
10. an equipment, it is characterised in that described first equipment includes:
Command reception module, refers to for receiving the data importing sent by the second equipment to the first equipment
Order, wherein, described data import instruction and are loaded with credit data, and described data import instruction and belong to remote
Journey internal storage access instructs；
Instruction respond module, writes for importing the preset address of instruction sensing to data described in internal memory
Enter described credit data；
Message packets limits module, for the described credit data according to described preset address record
Determine the number upper limit of the message packets sent to described second equipment.
11. first equipment according to claim 10, it is characterised in that
Described command reception module is the memory source controller MRC of the first equipment, for receive from
The data that the MRC of the second equipment sends import instruction, forward described data to import instruction to the most described the
The Memory Controller Hub MC of one equipment；
Described instruction respond module is the MC of described first equipment, refers to for importing according to described data
Make and write described credit data to described preset address.
12. first equipment according to claim 10, it is characterised in that described data are led
Enter instruction to include: the physical address that the mark of described first equipment is corresponding with described preset address.
13. 1 kinds of systems, described system includes the first equipment and the second equipment, described first equipment
With described second equipment communication connection；It is characterized in that,
Described second equipment, for obtaining the first message packets, described reception team from receiving queue
Row store the described message packets sent to described second equipment by described first equipment；
Described second equipment, for deleting described first message obtained in described receiving queue
Packet, if the number of the message packets of storage is less than or equal to described the in described receiving queue
One threshold value, sends the data importing instruction being loaded with credit data, described credit to described first equipment
Data are the number of the message packets that the expectation of described receiving queue receives, and described data import instruction
Belong to long-distance inner access instruction；
Described first equipment, writes it for importing instruction according to described data by described credit data
Preset address in internal memory, determines to described according to the described credit data of described preset address record
The number upper limit of the message packets that the second equipment sends.
14. systems according to claim 13, it is characterised in that described first equipment,
For importing instruction according to described data, described credit data is write the preset address in its internal memory,
Particularly as follows:
Described first equipment, for by described first equipment memory source controller MRC receive from
The described data that the MRC of described second equipment sends import instruction, forward described data to import instruction
To the Memory Controller Hub MC of described first equipment, by the MC of described first equipment according to described data
Import instruction and write described credit data to described preset address.
15. according to the method described in claim 13 or 14, it is characterised in that described data are led
Enter instruction to include: the physical address that the mark of described first equipment is corresponding with described preset address.
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|---|---|---|---|
| CN201510245796.1A CN106302201A (en) | 2015-05-14 | 2015-05-14 | Flow control methods, equipment and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510245796.1A CN106302201A (en) | 2015-05-14 | 2015-05-14 | Flow control methods, equipment and system |
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| CN106302201A true CN106302201A (en) | 2017-01-04 |
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| CN201510245796.1A Pending CN106302201A (en) | 2015-05-14 | 2015-05-14 | Flow control methods, equipment and system |
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| CN108829735A (en) * | 2018-05-21 | 2018-11-16 | 上海达梦数据库有限公司 | Synchronous method, device, server and the storage medium of parallel executive plan |
| CN113301103A (en) * | 2021-02-05 | 2021-08-24 | 阿里巴巴集团控股有限公司 | Data processing system, method and device |
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