WO2024103716A1 - Procédé et appareil de gestion de sous-réseaux en liaison, et dispositif et support lisible associés - Google Patents

Procédé et appareil de gestion de sous-réseaux en liaison, et dispositif et support lisible associés Download PDF

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Publication number
WO2024103716A1
WO2024103716A1 PCT/CN2023/100829 CN2023100829W WO2024103716A1 WO 2024103716 A1 WO2024103716 A1 WO 2024103716A1 CN 2023100829 W CN2023100829 W CN 2023100829W WO 2024103716 A1 WO2024103716 A1 WO 2024103716A1
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WIPO (PCT)
Prior art keywords
subnet
information
configuration file
connection
rdma
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PCT/CN2023/100829
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English (en)
Chinese (zh)
Inventor
张砚凯
赵帅
Original Assignee
苏州元脑智能科技有限公司
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Publication of WO2024103716A1 publication Critical patent/WO2024103716A1/fr

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    • 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
    • H04L67/2866—Architectures; Arrangements
    • H04L67/30—Profiles
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/16—Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
    • G06F15/163—Interprocessor communication
    • G06F15/173—Interprocessor communication using an interconnection network, e.g. matrix, shuffle, pyramid, star, snowflake
    • G06F15/17306—Intercommunication techniques
    • G06F15/17331—Distributed shared memory [DSM], e.g. remote direct memory access [RDMA]

Definitions

  • the present application relates to the field of computers, and more specifically to a method, apparatus, device and readable medium for managing subnets in a link.
  • RDMA Remote-Direct Memory Access
  • Mellanox Mellanox
  • Intel Intel and other companies.
  • RDMA can bypass the operating system protocol stack, reduce the number of memory copies, and avoid the system state kernel state switching overhead, thereby providing higher bandwidth, lower latency, and occupying less system resources.
  • RDMA is similar to TCP, so it also has a process of establishing a connection.
  • CM Connection Management, a component of the RDMA driver, provides some events in the process of establishing a connection
  • plays a pivotal role in the process of establishing a connection It implements some events on the driver side. Users can rely on these events to know what stage the current connection is in during the process of establishing a connection so as to make corresponding processing later.
  • the purpose of the embodiments of the present application is to propose a method, device, equipment and readable medium for subnet management in a link.
  • one aspect of an embodiment of the present application provides a method for subnet management in a link, comprising the following steps:
  • the host calls the connection establishment mechanism to establish connections with the IP addresses in the range respectively.
  • creating a configuration file at a preset location under a directory of the system, and writing the subnet information to be connected into the configuration file includes:
  • the format of the subnet information is IP address/subnet mask.
  • parsing the configuration file to obtain subnet information includes:
  • the range of the IP address of the subnet is calculated according to the subnet information, including:
  • N 2 ⁇ (32-subnet mask) to calculate the number of IP addresses contained in the subnet information, where N is the number of IP addresses contained in the subnet information;
  • the range of IP addresses for the subnet is determined to be N-1 consecutive IP addresses after the IP address in the configuration file.
  • the host calls a connection establishment mechanism to establish connections with the IP addresses in the range respectively, including:
  • it also includes:
  • the IP address of the subnet is recorded;
  • the host In response to the host failing to establish a connection with a subnet, the host re-establishes a connection with the subnet to which the connection failed after a threshold time has passed until a threshold number of times is reached.
  • it also includes:
  • the connection being established with the subnet is stopped, and the established connection is disconnected.
  • Another aspect of the embodiment of the present application further provides a device for subnet management in a link, the device comprising:
  • a writing module wherein the writing module is configured to create a configuration file in a preset location under a system directory, and write the subnet information to be connected into the configuration file;
  • an acquisition module configured to parse the configuration file to acquire the subnet information in response to receiving an instruction to connect to each subnet;
  • a calculation module the calculation module is configured to calculate a range of IP addresses of a subnet according to the subnet information
  • connection module is configured to, according to the calculated range of the IP address of the subnet, enable the host to call a connection establishment mechanism to establish connections with the IP addresses in the range respectively.
  • the writing module is further configured as:
  • the format of the subnet information is IP address/subnet mask.
  • the acquisition module is further configured to:
  • the computing module is further configured to:
  • N 2 ⁇ (32-subnet mask) to calculate the number of IP addresses contained in the subnet information, where N is the number of IP addresses contained in the subnet information;
  • the range of IP addresses for the subnet is determined to be N-1 consecutive IP addresses after the IP address in the configuration file.
  • connection module is further configured as:
  • a deletion module is further included, and the deletion module is configured as follows:
  • the connection being established with the subnet is stopped, and the established connection is disconnected.
  • Another aspect of the embodiments of the present application further provides a computer device, the computer device comprising:
  • the memory stores computer instructions executable on the processor, and the instructions implement the steps of any one of the above methods when executed by the processor.
  • Another aspect of the embodiments of the present application further provides a non-volatile readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the steps of any one of the above methods are implemented.
  • the method for subnet management in a link provided by the embodiment of the present application creates a configuration file at a preset location under the system directory, and writes the subnet information to be connected into the configuration file; in response to receiving an instruction to connect to each subnet, the configuration file is parsed to obtain the subnet information; the range of the IP address of the subnet is calculated according to the subnet information; based on the calculated range of the IP address of the subnet, the host calls the connection establishment mechanism to establish connections with the IP addresses within the range respectively.
  • the technical solution can realize automatic connection between multiple devices, reduce manual operations, save labor costs, and avoid errors caused by human operations.
  • FIG1 is a schematic flow chart of a method for managing subnets in a link according to an embodiment of the present application
  • FIG2 is a schematic diagram of a device for subnet management in a link according to an embodiment of the present application
  • FIG3 is a schematic diagram of a computer device according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a non-volatile readable storage medium according to an embodiment of the present application.
  • FIG1 shows a schematic flow chart of the method.
  • the method may include the following steps:
  • S1 creates a configuration file in a preset location under the system directory, and writes the subnet information to be connected into the configuration file.
  • Design a configuration file to store subnet discovery configuration information save the configuration file on the local system, and record the saved location and the name of the configuration file.
  • create a configuration file in the system directory and create a configuration file named "subnet" in the /data directory.
  • the user writes the subnet information expected to be connected into the subnet configuration file.
  • the format of the subnet information is IP address/subnet mask. For example, the user writes 192.168.1.1/28 in the configuration file.
  • the IP in front represents the first IP address in the subnet
  • the 28 behind is the value of the subnet mask, which can also be a user-defined value, indicating the range of IP addresses of the subnet.
  • S2 parses the configuration file to obtain the subnet information.
  • the host reads the configuration file according to the location and name of the configuration file recorded, and obtains the subnet information in the configuration file, that is, obtains the value of the first IP address and the subnet mask or a custom value.
  • S3 calculates the range of the subnet IP address according to the subnet information.
  • the host calls the connection establishment mechanism to establish connections with the IP addresses in the range. After obtaining the IP address range, the host establishes a connection to each IP address in turn, relying on the RDMA CM connection establishment mechanism. From initiating a connection to successfully connecting, a total of three CM events (RDMA_CM_EVENT_ADDR_RESOLVED, RDMA_CM_EVENT_ROUTE_RESOLVED, RDMA_CM_EVENT_ESTABLISHED) are experienced. These three events are generated after calling three APIs (rdma_resolve_addr, rdma_resolve_route, rdma_connect).
  • the host sends rdma_resolve_addr (cm_id, src_ip, dst_ip, timeout), where src_ip is the host IP address, dst_ip is the target IP address (i.e., the IP address in the IP address range), cm_id is a structure pointer of type (struct rdma_cm_id*), and establishing a connection requires creating the structure pointer by calling the rdma_create_id interface, and timeout is a custom timeout. The rdma_resolve_add process will be blocked.
  • rdma_resolve_addr does not return a result within the specified time, the function will time out and exit, indicating that rdma_resolve_addr has failed and needs to be retried until it succeeds. If the link is connected, you will receive RDMA_CM_EVENT_ADDR_RESOLVED to indicate success. If you receive RDMA_CM_EVENT_ADDR_ERROR, it means that there is a problem with the link and the connection cannot be established. At this time, you can send a warning to the administrator or wait for a certain period of time and try again. After receiving the success After receiving the return information, the host sends rdma_resolve_route(cm_id, timeout).
  • RDMA_CM_EVENT_ROUTE_RESOLVED If RDMA_CM_EVENT_ROUTE_RESOLVED is received, it means the route resolution is successful. If RDMA_CM_EVENT_ROUTE_ERROR is received, it means failure.
  • the host After receiving the successful return information, the host sends rdma_connect(cm_id, arg), where arg is a structure pointer of type (struct rdma_conn_param*). Before calling rdma_connect to initiate a connection, you need to apply for a struct rdma_conn_param structure space. The main purpose is to fill in some attribute information of the local connection, such as queue depth, current queue number and other information to tell the target end of the connection.
  • RDMA_CM_EVENT_ESTABLISHED If RDMA_CM_EVENT_ESTABLISHED is received, it indicates that the connection is established successfully. If other events are received, it indicates that the connection fails. If the connection is established successfully with the current IP address, the current IP address information is recorded and the connection with the next IP address is started. When all IP addresses in the subnet have tried to establish a connection, a timer is set, for example, to try to establish a connection with the IP address that was not successfully connected after one minute, until the connection is successful or the maximum number of retries is reached.
  • creating a configuration file in a preset location under a system directory, and writing the subnet information to be connected into the configuration file includes:
  • the format of the subnet information is IP address/subnet mask. For example, if the user writes 192.168.1.1/28 in the configuration file, the first IP represents the first IP address in the subnet, and the following 28 is the value of the subnet mask, which can also be a user-defined value, indicating the range of the subnet IP address.
  • the subnet mask or the customized value ranges from 0 to 32.
  • parsing the configuration file to obtain the subnet information includes:
  • the range of the IP address of the subnet calculated according to the subnet information includes:
  • N 2 ⁇ (32-subnet mask) to calculate the number of IP addresses contained in the subnet information, where N is the number of IP addresses contained in the subnet information;
  • the host calls the connection establishment mechanism to establish connections with the IP addresses in the range respectively, including:
  • RDMA Call the first API of RDMA and send information to determine whether the link is connected, the information is rdma_resolve_addr (cm_id, src_ip, dst_ip, timeout), where src_ip is the IP address of the host, and dst_ip is an IP address in the IP address range;
  • the third return information In response to receiving the third return information indicating that the connection is successfully established, it is determined that the local machine has successfully established a connection with an IP address in the IP address range, wherein the third return information is RDMA_CM_EVENT_ESTABLISHED. If the return information received in any step indicates failure, the next step is not performed, and a corresponding alarm may be issued to the management, or a retry may be performed after a certain period of time. When an IP address is successfully connected, the same steps are continued to establish a connection with the next IP address until all subnets are successfully connected.
  • the IP address of the subnet is recorded;
  • the host In response to the host failing to establish a connection with the subnet, the host re-establishes a connection with the subnet that failed to establish a connection every threshold time until the threshold number of times is reached. Or when all IP addresses in the subnet have tried to establish a connection, a timer is set, such as one minute later, to try to establish a connection with the IP address that failed to connect again until the connection is successful or the maximum number of retries is reached.
  • the connection being established with the subnet is stopped, and the established connection is disconnected. If the user wishes to disconnect all devices connected in the subnet, he only needs to delete the subnet information in the configuration file. When it is detected that there is no subnet information to be connected, the current connection is terminated first, and all IP addresses that have been successfully connected within the subnet range are disconnected.
  • the method disclosed in the embodiment of the present application can also be implemented as a computer program executed by a CPU, and the computer program can be stored in a non-volatile readable storage medium.
  • the computer program is executed by the CPU, the above functions defined in the method disclosed in the embodiment of the present application are performed.
  • a second aspect of an embodiment of the present application provides a device for subnet management in a link.
  • the device 200 includes:
  • a writing module wherein the writing module is configured to create a configuration file in a preset location under a system directory, and write the subnet information to be connected into the configuration file;
  • an acquisition module configured to parse the configuration file to acquire the subnet information in response to receiving an instruction to connect to each subnet;
  • a calculation module the calculation module is configured to calculate a range of IP addresses of a subnet according to the subnet information
  • connection module is configured to, according to the calculated range of the IP address of the subnet, enable the host to call a connection establishment mechanism to establish connections with the IP addresses in the range respectively.
  • the writing module is further configured as:
  • the format of the subnet information is IP address/subnet mask.
  • the acquisition module is further configured to:
  • the calculation module is further configured as:
  • N 2 ⁇ (32-subnet mask) to calculate the number of IP addresses contained in the subnet information, where N is the number of IP addresses contained in the subnet information;
  • the range of IP addresses for the subnet is determined to be N-1 consecutive IP addresses after the IP address in the configuration file.
  • connection module is further configured as:
  • RDMA_CM_EVENT_ADDR_RESOLVED the second API of RDMA is called and rdma_resolve_route(cm_id, timeout) is sent;
  • rdma_connect (cm_id, arg) is sent;
  • a deletion module is further included, and the deletion module is configured as follows:
  • the connection being established with the subnet is stopped, and the established connection is disconnected.
  • FIG3 shows a schematic diagram of an embodiment of the computer device provided by the present application.
  • the embodiment of the present application includes the following apparatus: at least one processor 21; and a memory 22, the memory 22 stores computer instructions 23 that can be run on the processor, and when the instructions are executed by the processor, the following method is implemented:
  • the host calls the connection establishment mechanism to establish connections with the IP addresses in the range respectively.
  • creating a configuration file in a preset location under a system directory, and writing the subnet information to be connected into the configuration file includes:
  • the format of the subnet information is IP address/subnet mask.
  • parsing the configuration file to obtain the subnet information includes:
  • the range of the IP address of the subnet calculated according to the subnet information includes:
  • N 2 ⁇ (32-subnet mask) to calculate the number of IP addresses contained in the subnet information, where N is the number of IP addresses contained in the subnet information;
  • the range of IP addresses for the subnet is determined to be N-1 consecutive IP addresses after the IP address in the configuration file.
  • the host calls the connection establishment mechanism to establish connections with the IP addresses in the range respectively, including:
  • RDMA_CM_EVENT_ADDR_RESOLVED the second API of RDMA is called and rdma_resolve_route(cm_id, timeout) is sent;
  • rdma_connect (cm_id, arg) is sent;
  • the IP address of the subnet is recorded;
  • the host In response to the host failing to establish a connection with a subnet, the host re-establishes a connection with the subnet to which the connection failed after a threshold time has passed until a threshold number of times is reached.
  • the connection being established with the subnet is stopped, and the established connection is disconnected.
  • FIG4 is a schematic diagram of an embodiment of the non-volatile readable storage medium provided by the present application.
  • the non-volatile readable storage medium 31 stores a computer program 32 that performs the following method when executed by a processor:
  • the host calls the connection establishment mechanism to establish connections with the IP addresses in the range respectively.
  • creating a configuration file in a preset location under a system directory, and writing the subnet information to be connected into the configuration file includes:
  • the format of the subnet information is IP address/subnet mask.
  • parsing the configuration file to obtain the subnet information includes:
  • the range of the IP address of the subnet calculated according to the subnet information includes:
  • N 2 ⁇ (32-subnet mask) to calculate the number of IP addresses contained in the subnet information, where N is the number of IP addresses contained in the subnet information;
  • the range of IP addresses for the subnet is determined to be N-1 consecutive IP addresses after the IP address in the configuration file.
  • the host calls the connection establishment mechanism to establish connections with the IP addresses in the range respectively, including:
  • RDMA_CM_EVENT_ADDR_RESOLVED the second API of RDMA is called and rdma_resolve_route(cm_id, timeout) is sent;
  • rdma_connect (cm_id, arg) is sent;
  • the IP address of the subnet is recorded;
  • the host In response to the host failing to establish a connection with a subnet, the host re-establishes a connection with the subnet to which the connection failed after a threshold time has passed until a threshold number of times is reached.
  • the connection being established with the subnet is stopped, and the established connection is disconnected.
  • the method disclosed in the embodiment of the present application can also be implemented as a computer program executed by a processor, and the computer program can be stored in a non-volatile readable storage medium.
  • the computer program is executed by the processor, the above functions defined in the method disclosed in the embodiment of the present application are performed.
  • the above method steps and system units may also be implemented using a controller and a non-volatile readable storage medium for storing a computer program that enables the controller to implement the above steps or unit functions.
  • the function can be implemented in hardware, software, firmware or any combination thereof. If implemented in software, the function can be stored on a computer-readable medium or transmitted by a computer-readable medium as one or more instructions or codes.
  • Computer-readable media include computer storage media and communication media, and the communication media include any media that helps to transfer a computer program from one location to another.
  • the storage medium can be any available medium that can be accessed by a general or special computer.
  • the computer-readable medium may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage devices, disk storage devices or other magnetic storage devices, or any other medium that can be used to carry or store the required program code in the form of an instruction or data structure and can be accessed by a general or special computer or a general or special processor.
  • any connection can be appropriately referred to as a computer-readable medium.
  • disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, Blu-ray disc, wherein disks usually reproduce data magnetically, while optical discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

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Abstract

La présente demande concerne un procédé et un appareil de gestion de sous-réseaux dans une liaison, ainsi qu'un dispositif et un support lisible associés. Le procédé consiste : à créer un fichier de configuration à un emplacement prédéfini dans un répertoire de système et à écrire dans le fichier de configuration des informations de sous-réseaux auxquels se connecter ; en réponse à la réception d'instructions de connexion aux sous-réseaux, à analyser le fichier de configuration de sorte à acquérir les informations des sous-réseaux ; à calculer la plage d'adresses IP des sous-réseaux selon les informations des sous-réseaux ; et, selon la plage calculée des adresses IP des sous-réseaux, à appeler par un hôte un mécanisme d'établissement de connexion pour établir des connexions respectivement avec les adresses IP se trouvant dans la plage. La solution selon la présente demande permet de réaliser une connexion automatique entre une pluralité de dispositifs, ce qui réduit les opérations manuelles et les coûts de main-d'œuvre, et permet d'éviter les erreurs se produisant dans les opérations humaines. La présente demande a trait au domaine des ordinateurs.
PCT/CN2023/100829 2022-11-16 2023-06-16 Procédé et appareil de gestion de sous-réseaux en liaison, et dispositif et support lisible associés WO2024103716A1 (fr)

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