CN107623632A - The connection method of procotol based on DPDK and system - Google Patents
The connection method of procotol based on DPDK and system Download PDFInfo
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Abstract
Present disclose provides a kind of connection method of the procotol based on DPDK, including：Step A, the interface in DPDK development environments is called, be that the forwarding of packet sets data processing circumstance；Step B, the interrelational form of port, Logic Core and queue is set, the MAC Address of physical network card is obtained, makes its interrelated；Step C, initialization receiving queue, transmit queue and forwarding function pair data are handled, the connection of response to network agreement.Network service is realized by DPDK, gateway program can be optimized for Virtual network operator and ICP, to optimize Consumer's Experience, and improve forward efficiency.
Description
Technical field
This disclosure relates to technical field of communication network, more particularly to one kind are based on datum plane development kit (Data
Plane Development Kit, abbreviation DPDK) procotol connection method and system.
Background technology
Computer network experienced explosive growth in the past more than ten years, with the fast development of internet, skill
Art is constantly updated, and the performance of computer is also breaking through one and another target.But as increasing user uses network
In resource, network bandwidth is continuously increased, and computer technology still can not meet growing user's request, and network congestion is asked
Topic gradually appears.
DPDK is function library and the set of driving of a series of rapid data bag processing, and it greatly can be improved at data
Rationality energy and handling capacity, so as to improve the operating efficiency of datum plane application program.In view of the use based on DPDK, common
Procotol is based on linux system, and DPDK is to bypass linux kernel and directly negotiated with hardware, therefore common network
Agreement can not be used under DPDK environment, and the network service based on DPDK needs new method.
Disclosure
(1) technical problems to be solved
Present disclose provides a kind of connection method of procotol based on DPDK and system, more than at least partly solving
The technical problem proposed.
(2) technical scheme
According to an aspect of this disclosure, there is provided a kind of connection method of the procotol based on DPDK, including：Step
A, the interface in DPDK development environments is called, be that the forwarding of packet sets data processing circumstance；Step B, port, logic are set
Core and the interrelational form of queue, the MAC Address of physical network card is obtained, makes its interrelated；Step C, initialization receiving queue, hair
Queue and forwarding function pair data are sent to be handled, the connection of response to network agreement.
In the disclosure some embodiments, the step A further comprises：Sub-step A1, environment abstraction layer is carried out just
Beginningization, running environment level of abstraction initialization function, the work that environment abstraction layer initialization function is completed in itself be it is complicated, its
Reading port parameters, parse and preserve the system information as DPDK operations, according to the system information, structure one is for bag
Handle the running environment of design；Sub-step A2, is transmitted to parameter, operational factor transmission function, environment abstraction layer EAL ginseng
Number transmits to be completed in the environment abstraction layer initialization function in the sub-step A1, and parametric transfer function transmission operation is just
Parameter in beginningization dos command needed for environmental structure, after Transfer Parameters, obtain three variables：Available port bitmask
L2fwd_enabled_port_mask, the receiving queue quantity l2fwd_rx_queue_per_lcore of each Logic Core, printing
The time interval timer_period of statistics；Sub-step A3, memory pool l2fwd_pktmbuf_pool_create is created,
By similar memory pool mechanism, the caching allocation strategy under multithreading is realized.
In the disclosure some embodiments, the step B further comprises：Sub-step B1, port numbers are traveled through, skips and does not open
The port numbers opened, and the corresponding ports of each port are set so that the adjacent port of each two is a pair, mutually forwarding；Sub-step
Rapid B2, the port do not opened is skipped, obtain Logic Core ID corresponding to port numbers, transmitting-receiving queue is passed through into queue number and end with port
Mouth Logic Core ID is connected, and realizes the configuration of Logic Core upper port and queue, and the Logic Core to distribution refers on each port
A fixed transmit queue；Sub-step B3, the MAC Address of each port is obtained, operation obtains address function, for carrying out source address
Replace.
In the disclosure some embodiments, the step C further comprises：Sub-step C1, from giving out a contract for a project corresponding to port
Packet receiving port received data packet；Sub-step C2, from giving out a contract for a project, port sends packet；Sub-step C3, packet is forwarded.
In the disclosure some embodiments, by calling DPDK receiver function to obtain link layer data, to data by will
Ask and handled, and forwarded.
In the disclosure some embodiments, packet receives from a port, another port forwarding, directly by link layer
Data are forwarded by MAC Address.
According to another aspect of the disclosure, there is provided a kind of connection system of the procotol based on DPDK, including：DPDK
Running environment generates system, for initialization context level of abstraction EAL, arrange parameter analytic function, loads three-layer routing forward table
And mac address table；Core dissemination system, for associated ports, Logic Core, receiving queue and transmit queue, become one
The DPDK forward gateway systems that can be operated.
In the disclosure some embodiments, described connection system also includes：Runtime is forwarded, for opening and closing
DPDK forward gateway systems, data processing and response to network agreement are carried out when system is opened.
In the disclosure some embodiments, the environment generation system further comprises：Environment abstraction layer initialization module,
Running environment level of abstraction initialization function, environment abstraction layer initialization function reading port parameters, parses and preserves as DPDK
The system information of operation, according to the system information, one running environment for bag processing design of structure；Parameter transmits mould
Block, operational factor transmission function, the transmission of EAL parameters are completed in environment abstraction layer initialization function, the parameter transmission
Parameter in module transmission operation initialization dos command needed for environmental structure；Allocation strategy module is cached, initialization is realized multi-thread
Caching allocation strategy under journey；Route forwarding table load-on module, three-layer routing forward table is loaded, the lookup method of forwarding is set,
Support accurate matching and longest prefix match；Address acquisition module, the MAC Address of network interface card is obtained, so that it is determined that source address and mesh
Address, determine data transfer direction and position.
In the disclosure some embodiments, the core dissemination system further comprises：Initialization module, initialization are all
Port, the state for receiving and dispatching queue and configuration；Relating module, disabled port is skipped, transmitting-receiving queue is passed through into queue with port
Number and port id connect, formed an associated entirety；Source address replacement module, read port configuration, obtains each end
The MAC Address of mouth, and carry out source address replacement.
In the disclosure some embodiments, pass through core dissemination system associated ports, Logic Core, receiving queue and the hair
After sending queue, the DPDK forward gateway systems of formation include：Interface module is received, the packet receiving with association corresponding with port of giving out a contract for a project
Port, for being received in packet receiving port to packet；Receiving thread module, for the packet to being received from reception network interface card
Received, explain and identify；QoS scheduler, the packet of receiving thread transmission is classified and joined the team, and base
Receiving queue is scheduled in the classification and goes out team, forms transmit queue；Threading models are sent, for sending the service
The transmission sequence queue of the transmission of quality scheduler；Interface module is sent, the port of giving out a contract for a project with association corresponding with packet receiving port, is used
Packet is transmitted in packet receiving port.
(3) beneficial effect
It can be seen from the above technical proposal that the connection method of procotol of the disclosure based on DPDK and system at least have
There is one of following beneficial effect：
(1) network service is realized by DPDK, gateway program can be optimized for Virtual network operator and ICP, to optimize user
Experience；
(2) because the procotol connection method based on DPDK is based on two layers of forwarding, by the reception letter for calling DPDK
Number obtains link layer data, is directly negotiated around linux kernel with hardware, data are handled on request, improved
Forwarding rate；
(3) due in the procotol connection method based on DPDK packet be from a port receive, another port
Forwarding, is directly forwarded link layer data by MAC Address, therefore need not obtain the source IP and purpose IP of message.
Brief description of the drawings
Fig. 1 is the connection method flow chart of procotol of the embodiment of the present disclosure based on DPDK.
Fig. 2 is embodiment of the present disclosure DPDK forward gateway system structure diagrams.
Embodiment
For the purpose, technical scheme and advantage of the disclosure are more clearly understood, below in conjunction with specific embodiment, and reference
Accompanying drawing, the disclosure is further described.
The some embodiments of the disclosure will be done with reference to appended accompanying drawing in rear and more comprehensively describe to property, some of but not complete
The embodiment in portion will be illustrated.In fact, the various embodiments of the disclosure can be realized in many different forms, and should not be construed
To be limited to this several illustrated embodiment；Relatively, there is provided these embodiments cause the disclosure to meet applicable legal requirement.
In first exemplary embodiment of the disclosure, there is provided a kind of connection side of the procotol based on DPDK
Method.Fig. 1 is the connection method flow chart of procotol of the first embodiment of the present disclosure based on DPDK.As shown in figure 1, disclosure base
Include in the connection method of DPDK procotol：
Step A, the interface in DPDK development environments is called, be that the forwarding of packet sets data processing circumstance；
The step A further comprises：
Sub-step A1, is initialized to environment abstraction layer, running environment level of abstraction initialization function rte_eal_init
(argc, argv), the work that environment abstraction layer initialization function is completed in itself are complicated, its reading port parameters, parsing
And the system information as DPDK operations is preserved, according to the system information, one operation ring for bag processing design of structure
Border；
Sub-step A2, is transmitted to parameter, operational factor transmission function l2fwd_parse_args (argc, argv),
The transmission of EAL parameters completes in environment abstraction layer initialization function, and parametric transfer function mainly transmits operation initialization
Parameter behind dos command " -- " needed for environmental structure.After Transfer Parameters, three variables are obtained：
l2fwd_enabled_port_mask：Available port bitmask,
12fwd_rx_queue_per_lcore：The receiving queue quantity of each Logic Core,
timer_period：Print the time interval of statistics；
Sub-step A3, memory pool l2fwd_pktmbuf_pool_create is created, by similar memory pool mechanism, realized
Caching allocation strategy under multithreading.
Step B, the interrelational form of port, Logic Core and queue is set, the MAC Address of physical network card is obtained, makes its mutual
Association；
The step B further comprises：
Sub-step B1, port numbers are traveled through, skip the port numbers do not opened, and the corresponding ports of each port are set so that
The adjacent port of each two is a pair, mutually forwarding；
Sub-step B2, the port do not opened is skipped, obtain Logic Core ID corresponding to port numbers, transmitting-receiving queue is led to port
Cross queue number and port logic core ID is connected, realize the configuration of Logic Core upper port/queue, on each port to distribution
Logic Core specify a transmit queue；
Sub-step B3, obtains the MAC Address of each port, and operation obtains address function rte_eth_macaddr_get
(portid ,s ＆l2fwd_ports_eth_addr [portid]), for carrying out source address replacement.
Step C, initialization receiving queue, transmit queue and forwarding function pair data are handled, and response to network agreement connects
Connect.
The step C further comprises,
Sub-step C1, the corresponding packet receiving port packet receiving from port of giving out a contract for a project；
Sub-step C2, give out a contract for a project from port of giving out a contract for a project is specified；
Sub-step C3, forward packet；
Packet receives from a port in above-mentioned technical proposal, the forwarding of another port, directly leads to link layer data
Cross MAC Address forwarding, it is not necessary to obtain the source IP and purpose IP of message.
The procotol connection method based on DPDK is based on two layers of forwarding, by calling DPDK receiver function to obtain
Link layer data, data are handled on request, and forwarded, improve forward efficiency.
So far, the connection method introduction of procotol of the first embodiment of the present disclosure based on DPDK finishes.
In second exemplary embodiment of the disclosure, it is proposed that a kind of connection system of the procotol based on DPDK
System, the system include：
Environment generation system, for initializing EAL (environment abstraction layer), arrange parameter analytic function, load three-layer routing
Forward table and mac address table；
Core dissemination system, for associated ports, Logic Core, receiving queue and transmit queue, becoming one can transport
The DPDK high-performance forward gateway systems of work；
The connection system of the procotol based on DPDK also includes：
Runtime is forwarded, for opening and closing the gateway system of DPDK high-performance forwarding.
The environment generation system further comprises：
Environment abstraction layer initialization module, running environment level of abstraction initialization function rte_eal_init (argc, argv),
Environment abstraction layer initialization function reading port parameters, parse and preserve the system information as DPDK operations, according to the system
System information, one running environment designed for bag processing of structure；
Parameter transfer module, operational factor transmission function, EAL parameters are transmitted in environment abstraction layer initialization function
Complete, mainly transmit parameter of the dos command " -- " below needed for environmental structure here；
Allocation strategy module is cached, the caching allocation strategy under multithreading is realized in initialization；
Route forwarding table load-on module, three-layer routing forward table is loaded, the lookup method of forwarding is set, support accurate matching
And longest prefix match；
Address acquisition module, the MAC Address of network interface card is obtained, so that it is determined that source address and destination address, determine data transfer
Direction and position.
The core dissemination system further comprises：
Initialization module, initialization all of the port, the state for receiving and dispatching queue and configuration；
Relating module, disabled port is skipped, transmitting-receiving queue is connected with port by queue number and port id,
Form an associated entirety；
Source address replacement module, read port configuration, obtains the MAC Address of each port, and carry out source address replacement.
Fig. 2 is the DPDK forward gateway system knots that the connection method of procotol of the embodiment of the present disclosure based on DPDK is formed
Structure schematic diagram.As shown in Fig. 2 after by the core dissemination system associated ports, Logic Core, receiving queue and transmit queue,
The DPDK high-performance gateway forwards system that can be operated formed, including：
Receive interface module, have association corresponding with port of giving out a contract for a project packet receiving port, in packet receiving port to packet
Received；
Receiving thread module, for being received from the packet for receiving network interface card reception, explaining and identifying；
Service quality (Quality of Service, abbreviation QOS) scheduler, the packet of receiving thread transmission is carried out
Classify and join the team, and receiving queue is scheduled and goes out team based on the classification, form transmit queue；
Send threading models, the transmission sequence queue of the transmission for sending the QoS scheduler；
Send interface module, have association corresponding with packet receiving port port of giving out a contract for a project, in packet receiving port to packet
It is transmitted.
So far, the connection system introduction of procotol of the second embodiment of the present disclosure based on DPDK finishes.
So far, the embodiment of the present disclosure is described in detail combined accompanying drawing.It should be noted that in accompanying drawing or say
In bright book text, the implementation that does not illustrate or describe is form known to a person of ordinary skill in the art in art, and
It is not described in detail.In addition, the above-mentioned definition to each element and method be not limited in mentioning in embodiment it is various specific
Structure, shape or mode, those of ordinary skill in the art simply can be changed or replaced to it.
Furthermore word "comprising" does not exclude the presence of element or step not listed in the claims.Before element
Word "a" or "an" does not exclude the presence of multiple such elements.
In addition, unless specifically described or the step of must sequentially occur, the order of above-mentioned steps, which has no, is limited to above institute
Row, and can change or rearrange according to required design.And above-described embodiment can based on design and reliability consideration, that
This mix and match uses using or with other embodiment mix and match, i.e., the technical characteristic in different embodiments can be with independent assortment
Form more embodiments.
Algorithm and display be not inherently related to any certain computer, virtual system or miscellaneous equipment provided herein.
Various general-purpose systems can also be used together with teaching based on this.As described above, required by constructing this kind of system
Structure be obvious.In addition, the disclosure is not also directed to any certain programmed language.It should be understood that it can utilize various
Programming language realizes content of this disclosure described here, and the description done above to language-specific is to disclose this public affairs
The preferred forms opened.
Those skilled in the art, which are appreciated that, to be carried out adaptively to the module in the equipment in embodiment
Change and they are arranged in one or more equipment different from the embodiment.Can be the module or list in embodiment
Member or component be combined into a module or unit or component, and can be divided into addition multiple submodule or subelement or
Sub-component.In addition at least some in such feature and/or process or unit exclude each other, it can use any
Combination is disclosed to all features disclosed in this specification (including adjoint claim, summary and accompanying drawing) and so to appoint
Where all processes or unit of method or equipment are combined.Unless expressly stated otherwise, this specification (including adjoint power
Profit requires, summary and accompanying drawing) disclosed in each feature can be by providing the alternative features of identical, equivalent or similar purpose come generation
Replace.Also, in if the unit claim of equipment for drying is listed, several in these devices can be by same hard
Part item embodies.
Similarly, it will be appreciated that in order to simplify the disclosure and help to understand one or more of each open aspect,
Above in the description to the exemplary embodiment of the disclosure, each feature of the disclosure is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect following intention：I.e. required guarantor
The disclosure of shield requires features more more than the feature being expressly recited in each claim.It is more precisely, such as following
Claims reflect as, open aspect is all features less than single embodiment disclosed above.Therefore,
Thus the claims for following embodiment are expressly incorporated in the embodiment, wherein each claim is in itself
Separate embodiments all as the disclosure.
Particular embodiments described above, the purpose, technical scheme and beneficial effect of the disclosure are carried out further in detail
Describe in detail bright, should be understood that the specific embodiment that the foregoing is only the disclosure, be not limited to the disclosure, it is all
Within the spirit and principle of the disclosure, any modification, equivalent substitution and improvements done etc., the guarantor of the disclosure should be included in
Within the scope of shield.
Claims (11)
1. a kind of connection method of the procotol based on DPDK, including：
Step A, the interface in DPDK development environments is called, be that the forwarding of packet sets data processing circumstance；
Step B, the interrelational form of port, Logic Core and queue is set, the MAC Address of physical network card is obtained, makes its interrelated；
Step C, initialization receiving queue, transmit queue and forwarding function pair data are handled, the connection of response to network agreement.
2. connection method according to claim 1, wherein, the step A further comprises：
Sub-step A1, is initialized to environment abstraction layer, running environment level of abstraction initialization function, environment abstraction layer initialization
Function reading port parameters, parse and preserve the system information as DPDK operations, according to the system information, build a pin
To the running environment of bag processing design；
Sub-step A2, is transmitted to parameter, operational factor transmission function, and environment abstraction layer EAL parameter is transmitted in institute
State and completed in the environment abstraction layer initialization function in sub-step A1, in parametric transfer function transmission operation initialization dos command
Parameter needed for environmental structure, after Transfer Parameters, obtain three variables：
Available port bitmask l2fwd_enabled_port_mask,
The receiving queue quantity l2fwd_rx_queue_per_lcore of each Logic Core,
Print the time interval timer_period of statistics；
Sub-step A3, memory pool l2fwd_pktmbuf_pool_create is created, by similar memory pool mechanism, realized multi-thread
Caching allocation strategy under journey.
3. connection method according to claim 2, wherein, the step B further comprises：
Sub-step B1, port numbers are traveled through, skip the port numbers do not opened, and the corresponding ports of each port are set so that every two
Individual adjacent port is a pair, mutually forwarding；
Sub-step B2, the port do not opened is skipped, obtain Logic Core ID corresponding to port numbers, transmitting-receiving queue is passed through into team with port
Row number and port logic core ID are connected, and realize the configuration of Logic Core upper port and queue, on each port to distribution
Logic Core specifies a transmit queue；
Sub-step B3, the MAC Address of each port is obtained, operation obtains address function, for carrying out source address replacement.
4. connection method according to claim 3, wherein, the step C further comprises：
Sub-step C1, the corresponding packet receiving port received data packet from port of giving out a contract for a project；
Sub-step C2, from giving out a contract for a project, port sends packet；
Sub-step C3, packet is forwarded.
5. connection method according to claim 4, by calling DPDK receiver function to obtain link layer data, to data
Handled, and forwarded on request.
6. connection method according to claim 5, wherein, packet receives from a port, the forwarding of another port, directly
Connect and forward link layer data by MAC Address.
7. a kind of connection system of the procotol based on DPDK, including：
DPDK running environment generates system, for initialization context level of abstraction EAL, arrange parameter analytic function, loads three floor road
By forward table and mac address table；
Core dissemination system, for associated ports, Logic Core, receiving queue and transmit queue, becoming one can operate
DPDK forward gateway systems.
8. connection system according to claim 7, in addition to：
Runtime is forwarded, for opening and closing DPDK forward gateway systems, data processing and sound are carried out when system is opened
Answer procotol.
9. connection system according to claim 8, the environment generation system further comprises：
Environment abstraction layer initialization module, running environment level of abstraction initialization function, environment abstraction layer initialization function read into
Mouth parameter, parse and preserve the system information as DPDK operations, according to the system information, structure one is set for bag processing
The running environment of meter；
Parameter transfer module, operational factor transmission function, EAL parameters are transmitted complete in environment abstraction layer initialization function
Into the parameter in the parameter transfer module transmission operation initialization dos command needed for environmental structure；
Allocation strategy module is cached, the caching allocation strategy under multithreading is realized in initialization；
Route forwarding table load-on module, three-layer routing forward table is loaded, the lookup method of forwarding is set, support accurate matching and most
Long prefix matching；
Address acquisition module, the MAC Address of network interface card is obtained, so that it is determined that source address and destination address, determine data transfer direction
And position.
10. connection system according to claim 8, the core dissemination system further comprises：
Initialization module, initialization all of the port, the state for receiving and dispatching queue and configuration；
Relating module, disabled port is skipped, transmitting-receiving queue is connected with port by queue number and port id, formed
One associated entirety；
Source address replacement module, read port configuration, obtains the MAC Address of each port, and carry out source address replacement.
11. connection system according to claim 8, by the core dissemination system associated ports, Logic Core, receive team
After row and transmit queue, the DPDK forward gateway systems of formation include：
Interface module is received, the packet receiving port with association corresponding with port of giving out a contract for a project, for being carried out in packet receiving port to packet
Receive；
Receiving thread module, for being received from the packet for receiving network interface card reception, explaining and identifying；
QoS scheduler, the packet of receiving thread transmission is classified and joined the team, and based on the classification to receiving
Queue is scheduled and goes out team, forms transmit queue；
Send threading models, the transmission sequence queue of the transmission for sending the QoS scheduler；
Interface module is sent, the port of giving out a contract for a project with association corresponding with packet receiving port, for being carried out in packet receiving port to packet
Send.
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| CN112383801B (en) * | 2020-11-10 | 2023-04-07 | 重庆紫光华山智安科技有限公司 | Media stream distribution method, device, distribution server and storage medium |
| CN113382014A (en) * | 2021-06-23 | 2021-09-10 | 中移（杭州）信息技术有限公司 | Negotiation processing method, device, terminal equipment and storage medium |
| CN113382014B (en) * | 2021-06-23 | 2022-12-06 | 中移（杭州）信息技术有限公司 | Negotiation processing method, device, terminal equipment and storage medium |
| CN113765785A (en) * | 2021-08-19 | 2021-12-07 | 东北大学 | DPDK-based novel multi-path transmission scheme |
| CN113765785B (en) * | 2021-08-19 | 2022-07-05 | 东北大学 | DPDK-based multipath transmission method |
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