WO2016078260A1 - 一种从控制平面和数据平面访问交换机外存的方法 - Google Patents
一种从控制平面和数据平面访问交换机外存的方法 Download PDFInfo
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- WO2016078260A1 WO2016078260A1 PCT/CN2015/074086 CN2015074086W WO2016078260A1 WO 2016078260 A1 WO2016078260 A1 WO 2016078260A1 CN 2015074086 W CN2015074086 W CN 2015074086W WO 2016078260 A1 WO2016078260 A1 WO 2016078260A1
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- switch
- authorized
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- operation instruction
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000000284 extract Substances 0.000 claims abstract description 9
- 230000009471 action Effects 0.000 description 8
- 238000013475 authorization Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000013507 mapping Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/60—Protecting data
- G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
- G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/067—Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/062—Securing storage systems
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0638—Organizing or formatting or addressing of data
- G06F3/0643—Management of files
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0655—Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices
- G06F3/0659—Command handling arrangements, e.g. command buffers, queues, command scheduling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/10—Network architectures or network communication protocols for network security for controlling access to devices or network resources
- H04L63/101—Access control lists [ACL]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
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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
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
-
- 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
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
Definitions
- the present invention relates to the field of network technologies, and in particular, to a method for accessing a switch external memory from a control plane and a data plane.
- SDN software-defined network
- OpenFlow involves two entities: controller and switch. OpenFlow is the southbound interface of the controller, communicating with the switch, and transmitting control information, data, and status. Initially, OpenFlow was used in campus networks, enterprise networks, and data center networks to optimize its control processes and data traffic paths and enhance management controls. Later, due to the flexibility of its control network, network researchers used it to conduct research on future network architectures and protocols. Therefore, Huawei's Protocol Non-Aware Forwarding (POF) and the US P4 language led by Nick Mckeown emerged.
- PPF Protocol Non-Aware Forwarding
- OpenFlow The research around OpenFlow will probably involve three aspects: controllers, line protocols and switches, where the controller embodies the control plane, the switch is the data plane, and the line protocol is the bridge between the two.
- controllers embodies the control plane
- the switch is the data plane
- the line protocol is the bridge between the two.
- the core focus of OpenFlow is the programmable nature of the network. The previous emphasis was on the programmable control plane, which is now programmable into the data plane.
- the focus is on the computational resources of the switch, the utilization of network resources, and the lack of effective methods for storage resources.
- the switch in the prior art cannot solve the problem of storage resource control, and cannot effectively access the switch external storage from the control plane and the data plane.
- the present invention provides a method for accessing a switch external storage from a control plane and a data plane, including:
- Step 1) The control module sends the information of the authorized entity and the authorized operation to the switch, and the switch receives the Some of the authorized information is stored;
- Step 2) The switch receives the file I/O operation instruction, and determines, according to the instruction and the authorized information obtained in step 1), whether the operating entity has the right of the file I/O operation instruction;
- Step 3) An operating entity having authority to the file I/O operation instruction, the switch extracting an instruction index and a parameter from the file I/O operation instruction, and performing a file I/O operation.
- step 1) the authorized entity and the information authorized to be operated are sent to the switch in the manner of the authorized operation list; wherein the authorized operation list adopts the file operation set defined in POSIX.1. achieve.
- step 2) further includes:
- the switch After receiving the file I/O operation instruction, the switch extracts the operation entity and the file I/O operation instruction index from the instruction, and compares the information extracted from the instruction with the authorized information stored in the switch in step 1). Determine whether the operating entity has the authority of the file I/O operation instruction. If yes, execute step 3). Otherwise, the operation is rejected, and the reject message is sent, and the sender of the file I/O operation instruction is sent back.
- the step 3) further includes: the switch extracts a file I/O operation instruction index and a parameter from the received file I/O operation instruction, and invokes a corresponding local file I/O according to the extracted result.
- the operation instruction generates a corresponding operation result, and finally the operation result is encapsulated into a message and returned to the caller.
- the invention solves the problem that the current control plane and the data plane cannot access the external storage of the programmable switch.
- FIG. 1 is a schematic diagram of a connection relationship between a controller and a switch (including external storage);
- FIG. 2 is a diagram of a file internal I/O module of the switch
- FIG. 3 is a flow chart of an access authorization process in the method of the present invention.
- FIG. 4 is a flow chart of a file I/O operation control process in the method of the present invention.
- Figure 5 is a flow chart showing the execution process of a file I/O operation in the method of the present invention.
- Figure 6 is a schematic diagram of a forwarding process at an NDN node.
- the method for accessing the switch external memory from the control plane and the data plane of the present invention involves the following entities: a control module and a switch.
- the control module may be a controller or an application, wherein the controller and the control in OpenFlow
- the function is similar in function.
- the switch In addition to the role assumed by the controller in OpenFlow, it also has the functions of access authorization control of the switch external storage, and the operation of defining a specific protocol to access the external storage of the switch.
- the switch is similar in function to the switch in OpenFlow.
- the switch also has an external storage device and has the function of performing an access operation on the external storage device. As shown in Figure 1, the control module communicates with the switch through a line protocol.
- the switch and the external storage device can communicate by using the IDE such as IDE, SATA, Fibre Channel, and SCSI.
- the VFS/file system/device identification/device driver method can be used to implement the localization in the switch operating system. Access, VFS can also be directly mapped to device-driven methods for local access. How to communicate between the switch and the external storage device is not the content of the present invention, and will not be described in detail herein.
- the method for accessing the switch external storage from the control plane and the data plane of the present invention includes:
- Step 1) Referring to FIG. 3, the control module sends the information of the authorized entity and the authorized operation to the switch, and the switch stores the authorized information and stores it.
- the authorized entity involved in this step may be an application or protocol executed in the switch, and the authorized operation may be multiple operations including operations such as reading, writing, and deleting.
- the authorized entity and the information authorized to be operated are sent to the switch in the manner of being authorized to operate the list.
- the authorized operation list can be implemented by a set of file operations defined in POSIX.1 or customized, and can be a subset or a complete set thereof, and is represented by a binary mapping table. If the corresponding bit is 1 for authorization, if 0, Without authorization, this can greatly reduce the size of the list of authorized operations that the control module delivers to the switch.
- the list of authorized operations can also use the text string method, but this will increase the overhead.
- Step 2 Referring to FIG. 4, after receiving the file I/O operation instruction, the switch extracts the operation entity and the file I/O operation instruction index (the index is the binary mapping code corresponding to the instruction) from the instruction, and the slave will execute the instruction.
- the extracted information is compared with the authorized information stored in the switch in step 1), and it is judged whether the operating entity has the authority of the file I/O operation instruction, and if so, the next step is executed, otherwise the operation is rejected, and the rejection report is generated.
- the sender of the file I/O operation instruction is sent back.
- Step 3 the switch extracts the file I/O operation instruction index and parameters from the received file I/O operation instruction, and invokes the corresponding local file I/O operation instruction according to the extracted result to generate a corresponding The result of the operation, and finally the result of the operation is encapsulated into a message and returned to the caller.
- the Data part of the Content Store table needs Support for external devices, assuming that data is stored as files.
- the NDN protocol is developed by the SDN method, and it is assumed that the Ethernet packet is used in the switch.
- the type field Ethertype corresponding to the NDN is 0x8099 (for illustrative purposes only). The method of the present invention will be described below in conjunction with such a scenario.
- the action request in the matching action table (the table in the SDN southbound interface protocol Openflow, including the field name, value, action, etc.) Write the payload portion of the message to the local file.
- the switch receives the file write operation, it extracts the operation entity (ie, NDN), the file write operation instruction index, checks the authorized list, and finds that the file read operation instruction of the NDN is permitted, and performs the file I/O operation.
- the operation entity ie, NDN
- the file write operation instruction index checks the authorized list, and finds that the file read operation instruction of the NDN is permitted, and performs the file I/O operation.
- the switch extracts the file write operation instruction index and the message payload, invokes the local file write operation instruction to perform the write operation, and encapsulates the operation result into a message, and returns the action caller in the matching action table.
- the switch extracts the operation entity (ie, NDN), the directory operation instruction index, checks the authorized list, and finds that the NDN directory creation operation instruction is prohibited, and rejects the directory creation operation. Operation, and generate a reject message, and send back the action caller in the matching action table.
- NDN operation entity
- the switch extracts the operation entity (ie, NDN), the directory operation instruction index, checks the authorized list, and finds that the NDN directory creation operation instruction is prohibited, and rejects the directory creation operation. Operation, and generate a reject message, and send back the action caller in the matching action table.
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Abstract
Description
Claims (4)
- 一种从控制平面和数据平面访问交换机外存的方法,包括:步骤1)、控制模块向交换机下发被授权实体与被授权操作的信息,交换机接收这些被授权信息后存储;步骤2)、交换机接收文件I/O操作指令,根据该指令以及步骤1)所得到的被授权信息确定操作实体是否具有该文件I/O操作指令的权限;步骤3)、对所述文件I/O操作指令有权限的操作实体,所述交换机从所述文件I/O操作指令中提取指令索引与参数,执行文件I/O操作。
- 根据权利要求1所述的从控制平面和数据平面访问交换机外存的方法,其特征在于,在步骤1)中,被授权实体与被授权操作的信息通过被授权操作列表的方式下发给交换机;其中,所述被授权操作列表采用POSIX.1中定义的文件操作集合实现。
- 根据权利要求1所述的从控制平面和数据平面访问交换机外存的方法,其特征在于,所述步骤2)进一步包括:交换机接收到文件I/O操作指令后,从该指令中提取操作实体以及文件I/O操作指令索引,将从指令中所提取的信息与步骤1)中交换机所存储的被授权信息进行比较,判断操作实体是否有该文件I/O操作指令的权限,如果有,则执行步骤3),否则拒绝操作,并生成拒绝报文,发回文件I/O操作指令的发送方。
- 根据权利要求1所述的从控制平面和数据平面访问交换机外存的方法,其特征在于,所述步骤3)进一步包括:交换机从所接收到的文件I/O操作指令中提取文件I/O操作指令索引和参数,根据所提取的结果调用对应的本地文件I/O操作指令,生成相应的操作结果,最后将操作结果封装成报文后返回调用方。
Priority Applications (4)
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EP15862073.2A EP3211851B1 (en) | 2014-11-19 | 2015-03-12 | Method for accessing switch external memory |
JP2017526917A JP6378841B2 (ja) | 2014-11-19 | 2015-03-12 | 制御プレーン及びデータプレーンからスイッチの外部メモリへアクセスする方法 |
US15/528,098 US20170310676A1 (en) | 2014-11-19 | 2015-03-12 | Method for accessing switch external memory from control plane and data plane |
KR1020177012726A KR101907903B1 (ko) | 2014-11-19 | 2015-03-12 | 제어 평면 및 데이터 평면으로부터 스위치 외부 메모리를 엑세스하는 방법 |
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CN201410665938.5 | 2014-11-19 | ||
CN201410665938.5A CN105635086B (zh) | 2014-11-19 | 2014-11-19 | 一种从控制平面和数据平面访问交换机外存的方法 |
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EP (1) | EP3211851B1 (zh) |
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KR (1) | KR101907903B1 (zh) |
CN (1) | CN105635086B (zh) |
WO (1) | WO2016078260A1 (zh) |
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US10324722B2 (en) * | 2016-06-24 | 2019-06-18 | Hewlett Packard Enterprise Development Lp | Global capabilities transferrable across node boundaries |
CN110138690B (zh) * | 2018-02-08 | 2021-10-26 | 中兴通讯股份有限公司 | 交换设备功能扩展方法及装置、交换设备及存储介质 |
CN108881072A (zh) * | 2018-06-19 | 2018-11-23 | 中国联合网络通信集团有限公司 | 数据报文处理方法及交换机 |
CN109309711B (zh) * | 2018-08-30 | 2020-06-16 | 中国科学院声学研究所 | 一种虚拟缓存共享方法和系统 |
CN110135174A (zh) * | 2019-04-22 | 2019-08-16 | 佛山职业技术学院 | 一种文件加密方法、电子设备及外接设备 |
CN113285838B (zh) * | 2021-05-28 | 2022-08-05 | 之江实验室 | 一种基于pof的异构标识网络模型及数据包及管理异构标识网络的方法 |
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- 2014-11-19 CN CN201410665938.5A patent/CN105635086B/zh active Active
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- 2015-03-12 US US15/528,098 patent/US20170310676A1/en not_active Abandoned
- 2015-03-12 EP EP15862073.2A patent/EP3211851B1/en active Active
- 2015-03-12 JP JP2017526917A patent/JP6378841B2/ja active Active
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US20170310676A1 (en) | 2017-10-26 |
CN105635086A (zh) | 2016-06-01 |
JP6378841B2 (ja) | 2018-08-22 |
KR101907903B1 (ko) | 2018-10-15 |
JP2017536766A (ja) | 2017-12-07 |
CN105635086B (zh) | 2020-02-04 |
EP3211851B1 (en) | 2019-12-18 |
EP3211851A4 (en) | 2017-10-25 |
KR20170086495A (ko) | 2017-07-26 |
EP3211851A1 (en) | 2017-08-30 |
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