CN106789708A - Multi-channel processing method in TCP/IP (Transmission control protocol/Internet protocol) unloading engine - Google Patents
Multi-channel processing method in TCP/IP (Transmission control protocol/Internet protocol) unloading engine Download PDFInfo
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- CN106789708A CN106789708A CN201611110885.6A CN201611110885A CN106789708A CN 106789708 A CN106789708 A CN 106789708A CN 201611110885 A CN201611110885 A CN 201611110885A CN 106789708 A CN106789708 A CN 106789708A
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
- H04L69/161—Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
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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
- H04L47/12—Avoiding congestion; Recovering from congestion
- H04L47/125—Avoiding congestion; Recovering from congestion by balancing the load, e.g. traffic engineering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/12—Protocol engines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
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Abstract
The invention provides a multi-channel processing method in a TCP/IP (Transmission control protocol/Internet protocol) unloading engine, which comprises the following steps of: the method comprises the following steps that firstly, experiments and debugging are carried out through a field programmable gate array FPGA, and a multichannel processing technology in the TOE is realized; step two, integrating the multi-channel processing technology in the TOE into an ASIC chip of the TOE to perform network protocol processing; step three, customizing a software interface, and selecting different channels through a port; step four, in the TCP protocol processing module, the option part of the TCP header is defined in an improved way; and step five, in the handshake stage of TCP connection establishment, during the first handshake, the active requester adds the source channel number, and the destination channel is not distributed and is set to be all zero. The invention can solve the problems of data congestion and connection interruption, greatly improves the working efficiency of the TOE, realizes the function of multi-port TCP connection and data transmission, realizes the high-level protocol of hardware processing TCP/IP protocol, and provides reliable guarantee for data transmission in a high-speed network environment.
Description
Technical field
The present invention relates to computer network field, in particular it relates to the band-wise processing in a kind of TCP/IP unloading engines
Method.
Background technology
Growing with Internet technology, TCP/IP protocol suite has become the network communication protocol of standard.But it is high
Under fast network environment, traditional TCP/IP Software Protocol Stacks the characteristics of context handover overhead and redundant data are replicated due to that will disappear
The excessive cpu performance of consumption, authentic data shows that current main-stream processor will be unable to meet at agreement when network speed reaches 10Gbps
The performance requirement of reason.Therefore generally using the TOE (TCP of hardware device processing protocol in server or high speed network environment
Offload Engine, TCP unloadings engine) technology.ICP/IP protocol is divided into application layer, transportation level, network by upper under
Four layers of layer and data link layer.Compared with traditional Software Protocol Stack, TOE technologies are transportation level and the protocol processes of Internet
Include in hardware handles so as to lift the processing speed of packet.Typical TOE systems realize structure as shown in figure 1, wherein TOE
Hardware realizes that module Main Function is that the main protocol of transportation level and Internet is processed, wherein topmost several agreements
It is ARP protocol, IP agreement, udp protocol and Transmission Control Protocol.
Transmission Control Protocol is connection-oriented, and Transmission Control Protocol is processed in TOE systems.Needed before data transfer starts
Connection is first set up, while needing to disconnect in the end of transmission.And in transceiving data, protocol process module can be to the last time
Data carry out response.Simultaneously in order to keep the unobstructed of data path, transceiving data is flowed by the way of sliding window
Amount control.Because the speed of hardware handles agreement is far longer than software, cause there may be the data stacking at interface between software and hardware,
So as to cause congestion problems.Particularly simultaneously when multiple ports are set up TCP and connected, hardware processing data will cannot cause in order
Disconnecting cannot be replied.Connection is set up in multiple ports simultaneously in Software Protocol Stack, and being placed at present can only in hardware realization
Serial process.In TOE hardware handles Transmission Control Protocol, setting up multiple channel management data storages with being connected can greatly improve biography
Defeated efficiency and data processing speed.
The content of the invention
For defect of the prior art, at the multichannel in a kind of TCP/IP unloading engines
Reason method, it can solve the problem that the problem of data congestion and disconnecting is simultaneously big by adding band-wise processing technology in TOE
The big operating efficiency for improving TOE, realizes the function that multiport TCP is connected and carried out data transmission, and realizes hardware handles
The upper-layer protocol of ICP/IP protocol, for data transfer provides reliable guarantee under high speed network environment.
According to an aspect of the present invention, there is provided a kind of band-wise processing method in TCP/IP unloadings engine, its feature
It is that it is comprised the following steps：
Step one, is tested and is debugged by on-site programmable gate array FPGA, realizes the band-wise processing in TOE
Technology；
Step 2, the band-wise processing technology in TOE is incorporated in the asic chip of TOE to carry out procotol treatment；
Step 3, customizes software interface, and different passages are selected by port；
Step 4, in Transmission Control Protocol processing module, the option portion to TCP stems is improved definition；
Step 5, in the handshake phase that TCP connections are set up, when shaking hands for the first time, active request side can add source channels number,
And purpose passage is now also unallocated therefore is set to complete zero；
Step 6, channel number is set to complete zero if one end is provided without multichannel technology, and data come from and multichannel skill is not used
The equipment of art is then matched by the source port number and destination slogan of TCP stems, and Transmission Control Protocol processing module is according to identifying
Corresponding memory channel number and place the data into wherein；
Step 7, at the end of connection, after memory channel data whole end of transmission, Transmission Control Protocol processing module can be controlled
The passage memory space is discharged, the passage is used to set up new connection next time.
Preferably, the Transmission Control Protocol processing module can carry out channel allocation to the data for sending and receiving.
Preferably, the band-wise processing method that the TCP/IP is unloaded in engine can carry out multiport TCP connections and go forward side by side
The function of row data transfer.
Compared with prior art, the present invention has following beneficial effect：The present invention is added at multichannel by TOE
Reason technology, can solve the problem that the problem of data congestion and disconnecting while greatly improving the operating efficiency of TOE, realize multiport
The function that TCP is connected and carried out data transmission, realizes the upper-layer protocol of hardware handles ICP/IP protocol, is high speed network environment
Lower data transfer provides reliable guarantee.
Brief description of the drawings
The detailed description made to non-limiting example with reference to the following drawings by reading, further feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is the flow chart that typical TOE systems realize structure；
Fig. 2 is the structure flow chart that the present invention realizes multichannel technology；
Fig. 3 is the tcp data figure after the present invention is improved；
Fig. 4 is the flow chart that the present invention realizes FIFO window techniques.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that to the ordinary skill of this area
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
As shown in Figures 1 to 4, the present invention provides a kind of band-wise processing method in TCP/IP unloadings engine, and it includes
Following steps：
Step one, is tested and is debugged by on-site programmable gate array FPGA, realizes the band-wise processing in TOE
Technology；
Step 2, the band-wise processing technology in TOE is incorporated in the asic chip of TOE to carry out procotol treatment；
In the selection of channel space, if only needing the storage of low volume data, can be using the SRAM register dies of high speed
Can meet.To realize mass data and the more situation of number of channels can realize multichannel skill with external storage equipment
Art.
Step 3, customizes software interface, and different passages are selected by port；
But on software upper strata, its treatment is again unitized, has good compatibility with current protocol stack treatment.
That is, if one end is using the hardware protocol processing server of TOE technologies, one end is the end processed using legacy protocol stack
End, data transfer can be normally carried out between them without any special configuration.The technology can be widely applied to server
Network environment in, such as in cloud service, Large-scale Data Rooms, the Internet of Things environment high to network speed requirement.
Step 4, in Transmission Control Protocol processing module, the option portion to TCP stems is improved definition；
As shown in figure 3, plus source channels number and purpose channel number, each 2 bytes, difference after 20 byte general headers
Memory channel number for recognizing TCP bags.The channel number can quickly recognize the channel space of storage required for packet.
Step 5, in the handshake phase that TCP connections are set up, when shaking hands for the first time, active request side can add source channels number,
And purpose passage is now also unallocated therefore is set to complete zero；
If it can be this connection assignment channel number that multichannel technology is also used after achieving the goal and holding, reported in the TCP of ack
The purpose channel number of stem is the source channels number of request end, and source channels number are then newly assigned channel number.
Step 6, channel number is set to complete zero if one end is provided without multichannel technology, and data come from and multichannel skill is not used
The equipment of art is then matched by the source port number and destination slogan of TCP stems, and Transmission Control Protocol processing module is according to identifying
Corresponding memory channel number and place the data into wherein；
Step 7, at the end of connection, after memory channel data whole end of transmission, Transmission Control Protocol processing module can be controlled
The passage memory space is discharged, the passage is used to set up new connection next time.
As shown in figure 4, realized to it by the way of FIFO (first in first out), by the sequence number of TCP stems and really
The number of recognizing is used as pointer, it is determined that the position read and write next time.
The TCP that the present invention designs multichannel in TOE realizations connects treatment technology, realizes multiport TCP connections simultaneously
The function of carrying out data transmission.The different passage of whole system is realized using different memory spaces such that it is able to effectively real
Existing data group bag.Wherein Transmission Control Protocol processing module can carry out channel allocation to the data for sending and receiving.According to actual feelings
Condition, can be configured to port number, and memory space to each passage is allocated, and enabling the memory space of passage has
Effect is utilized.
Band-wise processing method in the TCP/IP unloadings engine can carry out multiport TCP and connect and carry out data biography
Defeated function, such data transfer is more efficient and convenient, accelerates processing speed, has saved time cost.
In Transmission Control Protocol processing module, the option portion to TCP stems is improved definition.In 20 byte general headers
Afterwards plus source channels number and purpose channel number, each 2 bytes are respectively used to recognize the memory channel number of TCP bags.The channel number
The channel space of storage required for packet can be quickly recognized.Channel number effect under different situations is as follows：
One, in the handshake phase that TCP connections are set up, when shaking hands for the first time, active request side can add source channels number, and mesh
Passage it is now also unallocated therefore be set to complete zero.If it can be that this connects that multichannel technology is also used after achieving the goal and holding
Assignment channel number is connect, the purpose channel number of stem is reported for the source channels number of request end in the TCP of ack, and source channels number are then new
The channel number of distribution.
Two, channel number is set to complete zero if one end is provided without multichannel technology, and data are from unused multichannel technology
Equipment is then matched by the source port number and destination slogan of TCP stems, and Transmission Control Protocol processing module can identify correspondence
Memory channel number and place the data into wherein.
Three, at the end of connection, after memory channel data whole end of transmission, Transmission Control Protocol processing module can control release
The passage memory space, the passage can be used for setting up new connection next time.
The memory channel quantity that the present invention is realized can be designed according to actual conditions, and more numbers of channels mean
Can realize more connecting quantity.But more memory spaces can be also consumed, therefore needs to do a balance time space profit herein
It is sufficiently high with efficiency.Memory channel space size is equivalent to a window size in hardware realization.Using FIFO (advanced elder generations
Go out) mode it is realized, pointer is used as by the Sequence and Acknowledgment Number of TCP stems, it is determined that the position read and write next time.
Band-wise processing technology in TOE can be tested and debugged by on-site programmable gate array FPGA, it
Can be dissolved into the asic chip of TOE to carry out procotol treatment afterwards.In the selection of channel space, if need to only count on a small quantity
According to storage, can using high speed SRAM register dies can meet.To realize mass data and number of channels is more
Situation multichannel technology can be realized with external storage equipment.The multichannel technology that the present invention is used is mainly used in Transmission Control Protocol
In the middle of processing module, TOE can be improved to Transmission Control Protocol processing speed and alleviate congestion phenomenon.And it is designed go out TOE chips can be with
It is integrated into the network interface card of server, so that the upper-layer protocol for realizing hardware handles ICP/IP protocol of systematization, is express network
Data transfer provides reliable guarantee under environment.
In sum, the present invention proposes that one kind can be real according to the content of Transmission Control Protocol for hardware handles multi-channel data
Existing method for designing, by adding band-wise processing technology in TOE, can solve the problem that the problem of data congestion and disconnecting is same
When greatly improve the operating efficiency of TOE, realize the function that multiport TCP is connected and carried out data transmission, realize at hardware
The upper-layer protocol of ICP/IP protocol is managed, for data transfer provides reliable guarantee under high speed network environment.
Specific embodiment of the invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can within the scope of the claims make various deformations or amendments, this not shadow
Sound substance of the invention.
Claims (3)
1. a kind of TCP/IP unloads the band-wise processing method in engine, it is characterised in that in the TCP/IP unloadings engine
Band-wise processing method is comprised the following steps：
Step one, is tested and is debugged by on-site programmable gate array FPGA, realizes the band-wise processing skill in TOE
Art；
Step 2, the band-wise processing technology in TOE is incorporated in the asic chip of TOE to carry out procotol treatment；
Step 3, customizes software interface, and different passages are selected by port；
Step 4, in Transmission Control Protocol processing module, the option portion to TCP stems is improved definition；
Step 5, in the handshake phase that TCP connections are set up, when shaking hands for the first time, active request side can add source channels number, and mesh
Passage it is now also unallocated therefore be set to complete zero；
Step 6, channel number is set to complete zero if one end is provided without multichannel technology, and data are from unused multichannel technology
Equipment is then matched by the source port number and destination slogan of TCP stems, and Transmission Control Protocol processing module is right according to what is identified
The memory channel number answered simultaneously is placed the data into wherein；
Step 7, at the end of connection, after memory channel data whole end of transmission, Transmission Control Protocol processing module can control release
The passage memory space, the passage is used to set up new connection next time.
2. TCP/IP according to claim 1 unloads the band-wise processing method in engine, it is characterised in that the TCP
Protocol process module carries out channel allocation to the data for sending and receiving.
3. TCP/IP according to claim 1 unloads the band-wise processing method in engine, it is characterised in that the TCP/
Band-wise processing method in IP unloading engines carries out the function that multiport TCP is connected and carried out data transmission.
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Cited By (5)
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| CN110109852A (en) * | 2019-04-03 | 2019-08-09 | 华东计算技术研究所（中国电子科技集团公司第三十二研究所） | System and method for realizing TCP _ IP protocol by hardware |
| WO2020029778A1 (en) * | 2018-08-10 | 2020-02-13 | 华为技术有限公司 | Congestion control method and related device |
| WO2020063298A1 (en) * | 2018-09-27 | 2020-04-02 | 华为技术有限公司 | Method for processing tcp message, toe assembly, and network device |
| CN111917738A (en) * | 2020-07-14 | 2020-11-10 | 华东计算技术研究所（中国电子科技集团公司第三十二研究所） | Processing method and system capable of supporting network high-level protocol |
| CN114138707A (en) * | 2021-11-30 | 2022-03-04 | 江南大学 | Data transmission system based on FPGA |
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