CN103200085B - A kind of method and system that realize the transmitting-receiving of VXLAN message linear speed - Google Patents
A kind of method and system that realize the transmitting-receiving of VXLAN message linear speed Download PDFInfo
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- CN103200085B CN103200085B CN201310130270.XA CN201310130270A CN103200085B CN 103200085 B CN103200085 B CN 103200085B CN 201310130270 A CN201310130270 A CN 201310130270A CN 103200085 B CN103200085 B CN 103200085B
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Abstract
The present invention is applicable to network data processing field, and a kind of method and system of the VXLAN of realization message linear speed transmitting-receiving are provided, and described method comprises: virtual machine application is called VXLAN interface library and opened network card equipment port; VXLAN interface library distributes the queue of DMA buffering area at user's space, and drives and transmit buffer zone address to network interface card; The VXLAN message of receiving is write DMA buffering area by network interface card external drive program, and interface library function carries out the message of receiving to submit to virtual machine application after the decapsulation of VXLAN agreement; Virtual machine application calling interface built-in function sends message, and interface library function carries out message to write DMA buffering area after VXLAN encapsulation, and network interface card external drive program forwards according to destination address. The present invention, in the situation that not changing hardware device, realizes the real-time processing to VXLAN message in cloud computing environment, effectively reduces the cost of VXLAN message processing.
Description
Technical field
The invention belongs to network data processing field, relate in particular to a kind of method and system of the VXLAN of realization message linear speed transmitting-receiving.
Background technology
Vlan technology is subject to the restriction of 12 labels, and 4096 virtual subnets can only be provided at most in one network. In many tenants' system for cloud computing, ability to the quantity required of virtual network considerably beyond VLAN, therefore the producer taking VMWARE, CISCO as representative has proposed the framework of realizing of VXLAN, and 1,600 ten thousand virtual networks can be provided at most, thereby thoroughly solve this problem.
In prior art, realize VXLAN framework, generally need server updating and the software and hardware external member of relevant producer is installed, and network performance is subject to the restriction of soft hardware performance, both increased cost, again cannot guaranteed qos.
Summary of the invention
The embodiment of the present invention provides a kind of method of the VXLAN of realization message linear speed transmitting-receiving, is intended to address the above problem.
The embodiment of the present invention is achieved in that a kind of method of the VXLAN of realization message linear speed transmitting-receiving, and described method comprises the steps:
Virtual machine application is called the virtual LAN VXLAN interface library of expanding and is opened network card equipment port;
VXLAN interface library distributes the queue of direct memory access DMA buffering area at user's space, and transmits buffer zone address to network interface card external drive program;
In the time receiving VXLAN message, the VXLAN message of receiving is write DMA buffering area by network interface card external drive program, directly reads for VXLAN interface library, and VXLAN interface library function carries out the message of receiving to submit to virtual machine application after the decapsulation of VXLAN agreement;
In the time sending VXLAN message, virtual machine application is called VXLAN interface library function and is sent message, and VXLAN interface library function carries out message to write DMA buffering area after VXLAN encapsulation, and network interface card external drive program forwards according to destination address,
Wherein, described interface library mode provides VXLAN packet sending and receiving support for virtual machine application, realize the support of cloud computing environment to 1,600 ten thousand virtual LAN VLAN, be transparent to virtual machine application simultaneously, processes VXLAN message by DMA buffering area queue mode.
The embodiment of the present invention also provides a kind of system of the VXLAN of realization message linear speed transmitting-receiving, and described system comprises:
The virtual LAN VXLAN interface library of expanding, for distributing the queue of direct memory access DMA buffering area; Reading DMA buffer data, and carry out VXLAN decapsulation, parse No. VNI, VXLAN mark, be transmitted to object virtual machine VM, call operation system general-purpose library function sends with the ARP message of VXLAN encapsulation and checks destination address; Message is carried out to VXLAN encapsulation, and write DMA buffering area, call network interface card external drive routine interface and send, wherein, described VXLAN interface library comprises:
User's space Buffer allocation and administration module, when initializing, set up multiple described DMA buffering areas at user's space, and provide buffering area control address to network interface card external drive program;
Application call interface module, is used to virtual machine application that calling interface function is provided, and in the time of virtual machine application transmitting-receiving VXLAN message, only need call corresponding interface function;
VXLAN protocol process module, for encapsulation, decapsulation, read-write buffering area, the study of L2 norm of VXLAN message;
Network interface card external drive program, for reading DMA buffer data, and exports the physical port of network interface card to; Receive the VXLANARP message taking the machine hardware address MAC Address as destination address, write DMA buffering area,
Wherein, described interface library mode provides VXLAN packet sending and receiving support for virtual machine application; Realize the support of cloud computing environment to 1,600 ten thousand virtual LAN VLAN, be transparent to virtual machine application simultaneously, processes VXLAN message by DMA buffering area queue mode.
The embodiment of the present invention, in the situation that not changing hardware device, realizes the real-time processing to VXLAN message in cloud computing environment, effectively reduces the cost of VXLAN message processing.
Brief description of the drawings
Fig. 1 is the method flow diagram of realizing the transmitting-receiving of VXLAN message linear speed that the embodiment of the present invention provides;
Fig. 2 is the system construction drawing of realizing the transmitting-receiving of VXLAN message linear speed that the embodiment of the present invention provides.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated. Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The embodiment of the present invention is used DMA buffering area queue processing VXLAN message, solve packet sending and receiving efficiency, do not need to use special VXLAN protocol processes chip, realize and on common apparatus, called VXLAN function, and not newly-increased network card equipment, can realize the compatible processing to VXLAN message and common message, greatly reduce cost.
The method flow diagram that Fig. 1 receives and dispatches for the VXLAN message linear speed that the embodiment of the present invention provides, details are as follows:
In step S101, virtual machine application is called VXLAN interface library and is opened network card equipment port;
In step S102, VXLAN interface library distributes the queue of DMA buffering area at user's space, and transmits buffer zone address to network interface card external drive program;
In step S103, in the time receiving VXLAN message, the VXLAN message of receiving is write DMA buffering area by network interface card external drive program, directly reads for interface library, and interface library function carries out the message of receiving to submit to virtual machine application after the decapsulation of VXLAN agreement;
In step S104, in the time sending VXLAN message, virtual machine application calling interface built-in function sends message, and interface library function carries out message to write DMA buffering area after VXLAN encapsulation, and network interface card external drive program forwards according to destination address.
In embodiments of the present invention, in the time of non-virtual machine application transmitting-receiving message, the still built-in function of calling system acquiescence, encapsulation process is conciliate in the encapsulation that network interface card external drive program is not carried out VXLAN to it. Network interface card external drive program is supported the transmitting-receiving to VXLAN message and common message simultaneously.
In embodiments of the present invention, provide VXLAN packet sending and receiving support by interface library mode for virtual machine application; Realize the support of cloud computing environment to 1,600 ten thousand VLAN, be transparent to virtual machine application simultaneously substantially.
In the embodiment of the present invention, virtual machine application sends the implementation method of VXLAN message, and details are as follows:
1. virtual machine application is called VXLAN interface library and is sent message;
2.VXLAN interface library distributes the queue of DMA buffering area;
3.VXLAN interface library calls intel network interface card external drive interface, and the DMA buffer zone address distributing is passed to intel network interface card external drive;
4.VXLAN interface library call operation system general-purpose library function sends the ARP message audit destination address with VXLAN encapsulation, if ip multicast should send to VXLAN multicast address so, otherwise, if MAC Address is known, directly unicast to corresponding IP; If unknown, be broadcast to VXLAN gateway address;
5.intel network interface card external drive reading DMA buffer data, and output to the physical port of network interface card;
6. recipient's main frame is received after multicast message, and the target MAC (Media Access Control) address of finding this message is oneself, starts VXLAN packet parsing and finds object No. VNI, determines object virtual machine VM, is transmitted to object VM. Object VM uses the MAC Address response transmit leg of oneself, and recipient's main frame uses this response of VXLAN protocol encapsulation, and uses IP route to return to transmit leg;
7.VXLAN interface library is preserved VNI and IP address translation table;
8.VXLAN interface library uses mode of unicast to carry out VXLAN encapsulation to message, and VXLAN message is write to buffering area, calls intel network interface card external drive interface and sends;
9.intel network interface card external drive reading DMA buffer data, and output to the physical port of network interface card;
10. recipient receives after message, resolves VXLAN packet parsing and finds object No. VNI, determines object virtual machine VM, is transmitted to object VM.
In embodiments of the present invention, virtual machine application receives the implementation method of VXLAN message, and details are as follows:
1. virtual machine application is called VXLAN interface library and is monitored the udp port of specifying, and registers the VNI of this virtual machine simultaneously;
2.VXLAN interface library distributes the queue of DMA buffering area;
3.VXLAN interface library calls intel network interface card external drive interface, and the DMA buffer zone address distributing is passed to intel network interface card external drive;
4.intel network interface card external drive is received the VXLANARP message taking the machine MAC as destination address, writes DMA buffering area;
5.VXLAN interface library reading DMA buffer data, and carry out VXLAN decapsulation, parse No. VNI, be transmitted to object virtual machine VM;
6. object virtual machine VM replys response message, and VXLAN interface library carries out VXLAN encapsulation to response message, and writes DMA buffering area, calls intel network interface card external drive interface and sends;
7.intel network interface card external drive reading DMA buffer data, and output to the physical port of network interface card.
The system construction drawing of realizing the transmitting-receiving of VXLAN message linear speed that Fig. 2 provides for the embodiment of the present invention, details are as follows:
VXLAN interface library 21 distributes the queue of DMA buffering area; Reading DMA buffer data, and carry out VXLAN decapsulation, parse No. VNI, be transmitted to object virtual machine VM, call operation system general-purpose library function sends the ARP message audit destination address with VXLAN encapsulation; Message is carried out to VXLAN encapsulation, and write buffering area, call intel network interface card external drive interface and send.
Network interface card external drive program 22 reading DMA buffer datas, and export the physical port of network interface card to; Receive the VXLANARP message taking the machine MAC as destination address, write DMA buffering area.
In embodiments of the present invention, VXLAN interface library 21 comprises user's space Buffer allocation and administration module 211, application call interface module 212, and VXLAN protocol process module 213. Wherein:
User's space Buffer allocation and administration module 211 are in the time that user's application call interface library initializes, set up multiple DMA buffering areas at user's space, and provide buffering area control address to intel network interface card external drive, because intel network interface card is supported multiple buffer queue technology, message can be evenly distributed to each buffering area, thereby realize the multithreading load balancing of interface library.
Application call interface module 212 provides calling interface function for virtual machine application, in the time of virtual machine application transmitting-receiving VXLAN message, only need call corresponding interface function. Interface is bound by the VM at Virtual Machine Manager control program and application program place, and distributes to VNI of each VM virtual machine (VXLAN mark).
VXLAN protocol process module 213 is responsible for encapsulation, decapsulation, read-write buffering area, the L2 study of VXLAN message. In the time receiving the VXLAN message of virtual machine application, first send ARP message audit destination address, if ip multicast should send to VXLAN multicast address so, otherwise, if MAC Address is known, directly unicast to corresponding IP; If unknown, be broadcast to VXLAN gateway address. VXLAN encapsulation operation is for sequentially adding VXLAN packet header, UDP packet header, IP packet header. The UDP message that VXLAN decapsulation is operating as receiving is removed IP packet header, UDP packet header, VXLAN packet header, returns to VM application program. In the time receiving VXLAN broadcast packet, record VNI and IP address translation table that VXLAN message carries.
In embodiments of the present invention, Intel network interface card external drive program 22 is on the basis of original driving, to have carried out Function Extension, and its mixing of supporting DMA buffering area zero-copy pattern and common net mode card is used. Intel network interface card external drive program 22 comprises DMA buffering area control module 221, mixes packet sending and receiving module 222. Wherein:
The control address that DMA buffering area control module 221 is responsible for receiving from VXLAN interface library the queue of DMA buffering area; Distribute thread according to the DMA number of buffer of obtaining, guarantee the data of same source chummage that each buffering area writes.
Mix packet sending and receiving module 222 according to the difference of calling interface, adopt DMA buffering area zero-copy pattern and two kinds of modes of common net mode card to process message, for the former, from DMA buffer area read-write message, for the latter, from kernel spacing read-write message; This mode ensures that network interface card can support common application and VXLAN application simultaneously.
It is to solve due to the newly-increased propagation delay time of virtual machine application call VXLAN interface library that the embodiment of the present invention is used the object of DMA buffering area zero-copy pattern transmitting-receiving VXLAN message, ensures the QoS of VXLAN business.
The embodiment of the present invention is used DMA buffering area queue processing VXLAN message, solve packet sending and receiving efficiency, do not need to use special VXLAN protocol processes chip, realize and on common apparatus, called VXLAN function, and not newly-increased network card equipment, can realize the compatible processing to VXLAN message and common message, greatly reduce cost.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. a system that realizes the transmitting-receiving of VXLAN message linear speed, is characterized in that, described system comprises:
The virtual LAN VXLAN interface library of expanding, for distributing direct memory access DMA buffering areaQueue; Reading DMA buffer data, and carry out VXLAN decapsulation, parse VXLAN markNo. VNI, be transmitted to object virtual machine VM, call operation system general-purpose library function sends band VXLAN envelopeThe ARP message of dress checks destination address; Message is carried out to VXLAN encapsulation, and writeDMA buffering area, calls network interface card external drive routine interface and sends, and wherein, described VXLAN connectsMouth storehouse comprises:
User's space Buffer allocation and administration module, when initializing, set up many at user's spaceIndividual described DMA buffering area, and provide buffering area control address to network interface card external drive program;
Application call interface module, is used to virtual machine application that calling interface function is provided,In the time of virtual machine application transmitting-receiving VXLAN message, only need call corresponding interface function;
VXLAN protocol process module, for encapsulation, decapsulation, the read-write buffering of VXLAN messageDistrict, the study of L2 norm;
Network interface card external drive program, for reading DMA buffer data, and exports the physics end of network interface card toMouthful; Receive the VXLANARP message taking the machine hardware address MAC Address as destination address, write DMABuffering area,
Wherein, described interface library mode provides VXLAN packet sending and receiving support for virtual machine application; RealThe support of existing cloud computing environment to 1,600 ten thousand virtual LAN VLAN, simultaneously to virtual machine applicationBe transparent, process VXLAN message by DMA buffering area queue mode.
2. the system as claimed in claim 1, is characterized in that, described network interface card external drive program comprises:
DMA buffering area control module, for receiving the queue of DMA buffering area from described VXLAN interface libraryControl address; Distribute thread according to the DMA number of buffer of obtaining, guarantee the number that each buffering area writesAccording to homology chummage;
Mix packet sending and receiving module, for according to the difference of calling interface, adopt DMA buffering area zero-copyTwo kinds of modes of pattern and common net mode card are processed message.
3. a method that realizes the transmitting-receiving of VXLAN message linear speed, is characterized in that, under described method comprisesState step:
Virtual machine application is called the virtual LAN VXLAN interface library of expanding and is opened network card equipment endMouthful;
VXLAN interface library distributes the queue of direct memory access DMA buffering area at user's space, and to netCard external drive program is transmitted buffer zone address;
In the time receiving VXLAN message, network interface card external drive program writes the VXLAN message of receivingDMA buffering area, directly reads for VXLAN interface library, and VXLAN interface library function is by the message of receivingCarry out submitting to virtual machine application after the decapsulation of VXLAN agreement;
In the time sending VXLAN message, virtual machine application is called VXLAN interface library function and is sent reportLiterary composition, VXLAN interface library function carries out message to write DMA buffering area, network interface card after VXLAN encapsulationExternal drive program forwards according to destination address,
Wherein, described interface library mode provides VXLAN packet sending and receiving support for virtual machine application, realThe support of existing cloud computing environment to 1,600 ten thousand virtual LAN VLAN, simultaneously to virtual machine applicationBe transparent, process VXLAN message by DMA buffering area queue mode.
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| CN104601427B (en) | 2013-10-31 | 2018-03-06 | 新华三技术有限公司 | Message forwarding method and device in data center network |
| CN103647853B (en) * | 2013-12-04 | 2018-07-03 | 华为技术有限公司 | One kind sends ARP file transmitting methods, VTEP and VxLAN controllers in VxLAN |
| US9124536B2 (en) * | 2013-12-12 | 2015-09-01 | International Business Machines Corporation | Managing data flows in overlay networks |
| US9413612B2 (en) * | 2013-12-24 | 2016-08-09 | Cisco Technology, Inc. | Automatic resolution of virtual network instance to VLAN mapping conflicts in dual-homed deployments in a dynamic fabric automation network architecture |
| CN104243268B (en) | 2014-09-19 | 2017-05-10 | 新华三技术有限公司 | Association method and device between virtual extensible local area networks (VXLAN) and tunnel |
| CN104243630B (en) * | 2014-09-29 | 2017-10-03 | 新华三技术有限公司 | MAC address learning method and device in VXLAN networks |
| CN106209648B (en) | 2015-05-04 | 2019-06-14 | 新华三技术有限公司 | Multicast data packet forwarding method and apparatus across virtual expansible local area network |
| CN106209636B (en) | 2015-05-04 | 2019-08-02 | 新华三技术有限公司 | Multicast data packet forwarding method and apparatus from VLAN to VXLAN |
| CN106209689B (en) | 2015-05-04 | 2019-06-14 | 新华三技术有限公司 | Multicast data packet forwarding method and apparatus from VXLAN to VLAN |
| CN106161115A (en) * | 2016-09-23 | 2016-11-23 | 杭州迪普科技有限公司 | A kind of device management method being applied to VXLAN and device |
| CN108228309B (en) * | 2016-12-21 | 2021-11-23 | 腾讯科技（深圳）有限公司 | Data packet sending and receiving method and device based on virtual machine |
| CN108259291B (en) | 2016-12-29 | 2021-01-29 | 华为技术有限公司 | VXLAN message processing method, device and system |
| CN107360096B (en) * | 2017-08-14 | 2020-08-25 | 北京青云科技股份有限公司 | Method and system for forwarding VXLAN message |
| CN108183919B (en) * | 2018-01-18 | 2020-09-08 | 华为技术有限公司 | Message forwarding method and VXLAN gateway |
| CN109361723B (en) * | 2018-04-18 | 2021-08-31 | 上海锐智集数电子有限公司 | UDP (user Datagram protocol) effective message sending time sequence control method |
| CN110943941B (en) * | 2019-12-06 | 2022-03-11 | 北京天融信网络安全技术有限公司 | Message receiving method, network card and electronic equipment |
| CN113630341B (en) * | 2021-08-03 | 2023-06-06 | 武汉绿色网络信息服务有限责任公司 | Data information processing method and server |
| CN115225525A (en) * | 2022-07-07 | 2022-10-21 | 金锐软件技术(杭州)有限公司 | Network flow management system based on internet |
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| JP2009118106A (en) * | 2007-11-06 | 2009-05-28 | Mitsubishi Electric Corp | Network apparatus |
| JP5353278B2 (en) * | 2009-02-06 | 2013-11-27 | 富士通株式会社 | Communication device |
| WO2012093335A1 (en) * | 2011-01-06 | 2012-07-12 | Marvell Israel (M.I.S.L) Ltd. | Network device with a programmable core |
| CN102769557B (en) * | 2012-08-09 | 2015-08-12 | 深圳市共进电子股份有限公司 | A kind of transmission method of business datum message and device |
| CN102970227B (en) * | 2012-11-12 | 2016-03-02 | 盛科网络（苏州）有限公司 | The method and apparatus of VXLAN message repeating is realized in ASIC |
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