WO2019227891A1

WO2019227891A1 - Method and apparatus for implementing communication between nodes, and electronic device

Info

Publication number: WO2019227891A1
Application number: PCT/CN2018/120069
Authority: WO
Inventors: 张宏海; 余高峰; 严杰
Original assignee: 杭州海康威视数字技术股份有限公司
Priority date: 2018-05-31
Filing date: 2018-12-10
Publication date: 2019-12-05
Also published as: CN110557354B; CN110557354A

Abstract

A method and apparatus for implementing communication between nodes, and an electronic device. The method is applied to a user node in a serial attached small computer system interface (SAS) network system. The method comprises: obtaining target data to be transmitted sent by a target program; constructing an Ethernet packet in which the target data is carried; encapsulating the Ethernet packet as an SAS protocol packet; and sending the SAS protocol packet to an SAS-HBA in the user node, so that the SAS-HBA sends, by means of a forwarding node, the SAS protocol packet to a destination user node serving as a data receiver; upon receiving the SAS protocol packet, the destination user node decapsulates the SAS protocol packet as the Ethernet packet, and decapsulates the Ethernet packet as the target data, wherein the SAS-HBA is a host bus adapter using an SAS protocol. This solution enables the SAS network system to be compatible with an Ethernet communication interface, thereby reducing the coupling between the application layer and the data transmission layer of the user node.

Description

Method, device and electronic equipment for implementing communication between nodes

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on May 31, 2018, with application number 201810550194.0 and entitled "A Method, Device and Electronic Equipment for Realizing Communication Between Nodes", the entire contents of which are incorporated by reference Incorporated in this application.

Technical field

The present application relates to the field of data communication technology, and in particular, to a method, a device, and an electronic device for implementing communication between nodes.

Background technique

SAS (Serial Attached SCSI, Serial Attached SCSI) is a new generation of SCSI (Small Computer System Interface) technology. Among them, SAS uses serial technology to achieve higher transmission speeds, and improves internal space by shortening the connection lines. Among them, SCSI is an independent processor standard for a system-level interface between a computer and an intelligent device (hard disk, floppy drive, optical drive, printer, scanner, etc.).

For a SAS network system, communication between user nodes can use SAS-HBA (Host Bus Adapter, host bus adapter) for data transmission. In the prior art, in order to implement communication between user nodes, the communication interface adopted by the application layer of the user node is a SAS communication interface.

Although user nodes can communicate with each other in the prior art, due to the high coupling between the application layer and the data transmission layer of the user nodes, programs that rely on the Ethernet communication interface cannot be applied to the user nodes of the SAS network system. The programs that rely on the Ethernet communication interface are more common programs on the market, which undoubtedly seriously affects the user experience.

It can be seen that how to implement the Ethernet-compatible communication interface of the SAS network system, thereby reducing the coupling between the application layer and the data transmission layer of the user node is an urgent problem.

Summary of the Invention

The purpose of the embodiments of the present application is to provide a method, an apparatus, and an electronic device for implementing inter-node communication, so as to achieve an Ethernet-compatible communication interface of a SAS network system, thereby reducing the coupling between the application layer and the data transmission layer of a user node. The specific technical solutions are as follows:

In a first aspect, an embodiment of the present application provides a method for implementing inter-node communication, which is applied to a serially connected user node in a small computer system interface SAS network system; the method includes:

Obtaining target data to be transmitted from the target program; wherein the target program is a program that depends on the communication interface of the Ethernet;

Constructing an Ethernet message carrying the target data;

Encapsulating the Ethernet message into a SAS protocol message;

Sending the SAS protocol message to a SAS-HBA in the user node, so that the SAS-HBA sends the SAS protocol message to a destination user node as a data receiver through a forwarding node; wherein, When receiving the SAS protocol message, the destination user node decapsulates the SAS protocol message into the Ethernet message, and decapsulates the Ethernet message into the target data; wherein The SAS-HBA is a host bus adapter adopting the SAS protocol.

Optionally, the step of encapsulating the Ethernet packet into a SAS protocol packet includes:

A SAS header is added to the Ethernet packet, and an Ethernet frame header field in the Ethernet packet is assigned to obtain a SAS protocol packet.

Aggregating a plurality of Ethernet packets to be transmitted including the Ethernet packet to obtain an aggregated Ethernet packet; wherein the plurality of Ethernet packets to be transmitted correspond to a same data receiver, and the The data volume of multiple Ethernet packets to be transmitted is not greater than a predetermined data volume threshold;

A SAS header is added to the aggregated Ethernet packet, and an Ethernet frame header field in the Ethernet packet is assigned to obtain a SAS protocol packet.

Optionally, the sending the SAS protocol message to a SAS-HBA in the user node, so that the SAS-HBA sends the SAS protocol message to a data receiver as a data receiver through a forwarding node. The steps for the destination user node include:

Sending the SAS protocol message to the SAS-HBA in the user node, so that the SAS-HBA uses the physical channel with the source SAS address in the SAS protocol message to forward the SAS protocol through the forwarding node The message is sent to the destination user node as the data receiver.

Optionally, the initial SAS address of each physical channel in the SAS-HBA is different.

Optionally, the method further includes:

When it is detected that the data flow of the first physical channel in the SAS-HBA meets the predetermined channel busy condition, find the target physical channel that meets the predetermined idle condition; wherein the first physical channel is the Any physical channel or predetermined physical channel;

When the target physical channel is found, the SAS address of the target physical channel is reset to the SAS address of the first physical channel.

Optionally, the step of resetting the SAS address of the target physical channel to the SAS address of the first physical channel includes:

Disable the target physical channel;

Setting the SAS address of the target physical channel to the SAS address of the first physical channel;

After the setting is completed, the target physical channel is enabled.

In a second aspect, an embodiment of the present application provides a device for implementing inter-node communication, which is applied to a serially connected user node in a small computer system interface SAS network system; the device includes:

A data obtaining unit for obtaining target data to be transmitted from the target program; wherein the target program is a program that depends on a communication interface of the Ethernet;

An Ethernet message constructing unit, configured to construct an Ethernet message carrying the target data;

A message encapsulation unit, configured to encapsulate the Ethernet message into a SAS protocol message;

A message sending unit, configured to send the SAS protocol message to a SAS-HBA in the user node, so that the SAS-HBA sends the SAS protocol message to a data receiver through a forwarding node A destination user node; wherein when the destination user node receives the SAS protocol message, it decapsulates the SAS protocol message into the Ethernet message, and decapsulates the Ethernet message Is the target data; wherein, the SAS-HBA is a host bus adapter using the SAS protocol.

Optionally, the message encapsulation unit includes:

The first packet encapsulation subunit is configured to add a SAS header to the Ethernet packet, and assign a value to an Ethernet frame header field in the Ethernet packet to obtain a SAS protocol packet.

Optionally, the message encapsulation unit includes:

An aggregation subunit, configured to aggregate multiple Ethernet packets to be transmitted including the Ethernet packet to obtain an aggregated Ethernet packet; wherein the multiple Ethernet packets to be transmitted correspond to the same data The receiver, and the data amount of the plurality of Ethernet packets to be transmitted is not greater than a predetermined data amount threshold;

The second message encapsulation subunit is configured to add a SAS header to the aggregated Ethernet packet, and assign a value to an Ethernet frame header field in the Ethernet packet to obtain a SAS protocol packet.

Optionally, the message sending unit is specifically configured to:

Optionally, the apparatus further includes:

A physical channel searching unit, configured to find a target physical channel that meets a predetermined idle condition when detecting that the data traffic of the first physical channel in the SAS-HBA meets a predetermined channel busy condition; wherein the first physical channel is Any physical channel or a predetermined physical channel in the SAS-HBA;

The address resetting unit is configured to reset the SAS address of the target physical channel to the SAS address of the first physical channel when the target physical channel is found.

Optionally, the address resetting unit is specifically configured to:

When the target physical channel is found, disable the target physical channel;

After the setting is completed, the target physical channel is enabled.

In a third aspect, an embodiment of the present application provides an electronic device. The electronic device is a user node in a serial connection small computer system interface SAS network system, and includes a processor, a communication interface, a memory, and a communication bus. Device, communication interface, and memory to complete mutual communication through the communication bus;

Memory for storing computer programs;

The processor is configured to implement a method for implementing communication between nodes provided in the embodiments of the present application when a program stored in a memory is executed.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, a computer program provided by the embodiment of the application is implemented. Method steps for implementing communication between nodes.

In a fifth aspect, an embodiment of the present application further provides an executable program code, where the executable program code is used to run to execute a method step of implementing communication between nodes provided by the embodiment of the present application.

In the solution provided by the embodiment of the present application, after the user node obtains the target data to be transmitted from the target program, it first encapsulates the target data into an Ethernet message, and then constructs a SAS protocol message and transmits the SAS protocol message. So that the program relying on the communication interface of Ethernet can be applied to the user node. Therefore, through this solution, the communication interface compatible with the Ethernet of the SAS network system can be realized, thereby reducing the purpose of coupling the application layer and the data transmission layer of the user node.

Of course, to implement any product or method of the present application, it is not necessary to achieve all the advantages described above at the same time.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention and the technical solutions of the prior art, the following briefly introduces the embodiments and the drawings needed in the prior art. Obviously, the drawings in the following description are only the present invention. For some embodiments of the invention, for those skilled in the art, other drawings can be obtained based on these drawings without paying creative labor.

FIG. 1 is a flowchart of a method for implementing communication between nodes according to an embodiment of the present application; FIG.

2 is a message format of a SAS protocol message provided by an embodiment of the present application;

FIG. 3 (a) is a schematic diagram of a physical channel included in a SAS port before dynamic adjustment, and FIG. 3 (b) is a schematic diagram of a physical channel included in a SAS port after dynamic adjustment;

4 is a schematic diagram of a topology of a SAS network system according to an embodiment of the present application;

5 is a schematic structural diagram of a device for implementing communication between nodes according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In order to achieve the purpose of the Ethernet-compatible communication interface of the SAS network system, thereby reducing the coupling between the application layer and the data transmission layer of the user node, the embodiments of the present application provide a method, a device, and an electronic device for implementing communication between nodes.

The following first describes a method for implementing communication between nodes provided in the embodiments of the present application.

It should be noted that the method for implementing communication between nodes provided in the embodiments of the present application is applied to a user node in a SAS network system. The device type of the user node may be: a computer, a printer, a scanner, and the like.

In addition, the SAS network system described in the embodiment of the present application may be a local area network system. In this local area network system, each user node may perform data transfer through a SAS switch. Of course, the SAS network system described in the embodiment of the present application may also be a wide area network system. In this wide area network system, each user node may perform data transfer through a SAS switch and a SAS gateway.

It should be emphasized that the user node in the SAS network system is a device that uses the SAS protocol for data transmission at the data transmission layer, which is specifically reflected in the use of SAS-HBA as the network card device. Similarly, a SAS switch is a switch that uses the SAS protocol for data transmission at the data transmission layer, and a SAS gateway is a gateway that uses the SAS protocol for data transmission at the data transmission layer.

As shown in FIG. 1, a method for implementing communication between nodes provided in an embodiment of the present application may include the following steps:

S101. Obtain target data to be transmitted from a target program. The target program is a program that depends on the communication interface of the Ethernet.

After the target program sends the target data to be transmitted, the user node can obtain the target data to be transmitted from the target program, and then perform subsequent processing on the target data.

It can be understood that the target data sent by the target program can be: user data generated based on user operations, or data generated by the program itself, which are all reasonable.

S102. Construct an Ethernet packet carrying the target data.

Among them, since the target data to be transmitted sent by the target program is application layer data, and the target program is a program that depends on the communication interface of Ethernet, in order to achieve the Ethernet-compatible communication interface of the SAS network system, the user node is acquiring the target After the target data to be transmitted sent by the program, an Ethernet message carrying the target data can be constructed. Since the data transmission protocol of the Ethernet can be a TCP / IP protocol, the Ethernet packet can be a TCP / IP protocol packet. Among them, TCP / IP protocol, short for Transmission Control Protocol / Internet Protocol, Chinese translation is called Transmission Control Protocol / Internet Interconnection Protocol, also known as network communication protocol. It is the most basic protocol of the Internet, the basis of the Internet, It consists of the IP protocol at the layer and the TCP protocol at the transport layer.

It should be noted that, in the embodiment of the present application, the specific construction method of constructing the Ethernet packet carrying the target data is the same as that in the prior art. In addition, the Ethernet packet carries an active IP address and a destination IP address, wherein the source IP address is the IP address of the user node, and the destination IP address is the IP address of the destination user node as a data receiver. Among them, the IP address is Internet Protocol Address, which is a method of addressing hosts on the Internet, also known as an Internet Protocol address.

S103. Encapsulate the Ethernet packet into a SAS protocol packet.

After the Ethernet message is constructed, in order to ensure that the target data can be transmitted at the data transmission layer of the user node, the user node can encapsulate the Ethernet message into a SAS protocol message, where the SAS protocol message is compliant SAS transmission specification message.

It should be noted that the SAS protocol packet carries the source SAS address and the destination SAS address. The source SAS address is: the SAS address of the user node that is the sender of the data, specifically: the SAS address of the physical channel in the first SAS-HBA (Host Bus Adapter). The first SAS-HBA is SAS-HBA installed on a user node as a data sender. The destination SAS address is: the SAS address of the user node as the data receiver, specifically the SAS address of the physical channel in the second SAS-HBA, which is installed on the user node as the data receiver SAS-HBA.

Those skilled in the art can understand that according to the SAS protocol, when a user node in a SAS network system joins the SAS network system, it reads the SAS address from its corresponding SAS-HBA and broadcasts it to the SAS network system. Other user nodes in. In this way, each user node in the SAS network system can store the SAS address of each user node in the SAS network system in the address chain table.

In addition, any SAS-HBA may include multiple physical channels, and each physical channel is provided with an 8-byte SAS address. In addition, for a SAS-HBA, the physical channels with the same SAS address belong to one SAS port. In this way, the number of SAS ports is the same as the number of SAS addresses. It should be noted that in one implementation, the initial SAS address of each physical channel in any SAS-HBA can be different. At this time, one SAS port includes one physical channel. In this way, the same number of physical channels can be constructed. Network card device to achieve physical isolation between TCP / IP channels.

Optionally, in an implementation manner, the step of encapsulating the Ethernet packet into a SAS protocol packet may include:

In this embodiment, the fields included in the SAS header added to the Ethernet packet are the same as the fields included in the header of the SAS protocol packet in the prior art. Specifically, the fields may include at least the source SAS address, the destination SAS address, SAS body length, SAS header length, etc. Figure 2 shows the message format of the SAS protocol message. As shown in Figure 2, the SAS header is the SAS header. The Ethernet frame header, IP header, TCP header, data, and frame check sequence form the SAS protocol message. The style of the message.

In addition, the value of the source MAC (Media Access Control) address in the Ethernet frame header field may be: the lower 6 bits of the source SAS address; and the value of the destination MAC address in the Ethernet frame header field may be For: The lower 6 bits of the destination SAS address are of course not limited to this. The source MAC address is the MAC address of the user node, and the destination MAC address is the MAC address of the destination user node.

Optionally, in order to improve bandwidth utilization, for Ethernet packets with a small amount of data, multiple Ethernet packets with a small amount of data may be aggregated and encapsulated into one SAS protocol packet. Based on this requirement, in another implementation manner, the step of encapsulating the Ethernet packet into a SAS protocol packet may include:

Aggregating multiple Ethernet packets to be transmitted including the Ethernet packet to obtain an aggregated Ethernet packet; wherein the multiple Ethernet packets to be transmitted correspond to the same data receiver, and the multiple The data volume of the transmitted Ethernet packets is not greater than the predetermined data volume threshold;

It should be noted that the plurality of Ethernet packets are packets extracted according to a transmission order, that is, the plurality of Ethernet packets are a plurality of packets transmitted continuously. In addition, on the premise of ensuring higher bandwidth, the predetermined data amount threshold can be set according to actual conditions. In addition, for a specific implementation manner of adding a SAS header to the aggregated Ethernet packet and assigning values to the Ethernet frame header field in the Ethernet packet, refer to the related content described above.

S104. Send the SAS protocol message to the SAS-HBA in the user node, so that the SAS-HBA sends the SAS protocol message to the destination user node as a data receiver through the forwarding node.

After generating the SAS protocol message, the user node may send the SAS protocol message to the SAS-HBA in the user node, so that the SAS-HBA sends the SAS protocol message to the data as a data through the forwarding node. The destination user node of the receiver. Further, when receiving the SAS protocol message, the destination user node decapsulates the SAS protocol message into the Ethernet message, and decapsulates the Ethernet message into the target data.

Specifically, the user node sends the SAS protocol message to the SAS-HBA in the user node, so that the SAS-HBA uses a physical channel having a source SAS address in the SAS protocol message, and forwards the The SAS protocol message is sent to the destination user node as the data receiver. Correspondingly, the SAS-HBA in the destination user node can receive the SAS protocol message sent by the forwarding device, and then the destination user node decapsulates the SAS protocol message twice, and finally obtains the target data.

It can be understood that, for a local area network, the forwarding node is a SAS switch. Further, the SAS-HBA sends the SAS protocol message to a SAS switch using a physical channel having a source SAS address in the SAS protocol message, and the SAS switch sends the SAS protocol message to a destination node. It should be noted that after the SAS switch receives the SAS protocol message, the process of forwarding the SAS protocol message is the same as the process of forwarding the SAS protocol message after the SAS switch of the prior art SAS network system receives a SAS protocol message. It is the same and will not be repeated here.

In addition, since the physical channels with the same SAS address are classified as one SAS port, in order to increase the communication bandwidth, the traffic pressure of the port can be monitored and the number of physical channels included in the port can be dynamically adjusted. Based on this requirement, the method for implementing communication between nodes provided in the embodiments of the present application may further include the following steps A and B:

Step A: When detecting that the data flow of the first physical channel in the SAS-HBA meets the predetermined channel busy condition, find a target physical channel that meets the predetermined idle condition; wherein the first physical channel is in the SAS-HBA Any physical channel or scheduled physical channel;

During the operation of the user node, the user node can detect the data traffic of each physical channel in its SAS-HBA through real-time detection, timing detection or polling detection, and then when detecting its own SAS-HBA When the data traffic of the first physical channel meets the busy condition of the predetermined channel, the target physical channel that meets the predetermined idle condition is searched, where the first physical channel is any physical channel in the SAS-HBA. Of course, during the operation of the user node, the user node can detect the data traffic of a predetermined physical channel in its SAS-HBA, and then the predetermined physical channel is the first physical channel; further, when the predetermined physical channel is detected When the data traffic meets the predetermined channel busy condition, find the target physical channel that meets the predetermined idle condition.

The predetermined channel busy condition and the predetermined idle condition can be set according to actual conditions. For example, the predetermined channel busy condition can be that the unit data traffic exceeds the predetermined traffic upper limit value, and the predetermined idle condition can be that the unit data traffic is low. The lower limit of the predetermined flow rate is of course not limited to this.

Step B: When the target physical channel is found, reset the SAS address of the target physical channel to the SAS address of the first physical channel.

When the target physical channel is found, the user node can reset the SAS address of the target physical channel to the SAS address of the first physical channel, so that the number of physical channels in the SAS port where the busy physical channel is located can be obtained. Increase, that is, the port gets aggregated. By dynamically adjusting the number of physical channels included in the SAS port, the communication bandwidth can be dynamically controlled.

Specifically, the step of resetting the SAS address of the target physical channel to the SAS address of the first physical channel may include:

Disable the target physical channel;

Setting the SAS address of the target physical channel as the SAS address of the first physical channel;

After the setting is completed, enable the target physical channel.

To facilitate understanding of the process of dynamically adjusting the number of physical channels included in the SAS port, refer to the example diagrams shown in FIG. 3 (a) and FIG. 3 (b). Referring to FIG. 3 (a), the SAS address of each physical channel is different. At this time, each physical channel belongs to a different SAS port. Specifically: SAS port port1 includes physical channel phy1, SAS port port2 includes physical channel phy2, and SAS port. port3 includes a physical channel phy3, and SAS port port4 includes a physical channel phy4. When it is detected that the data traffic of phy1 meets the predetermined channel busy condition, and it is detected that the data traffic of phy2, 3, and 4 meets the predetermined idle condition, the SAS address of phy2, 3, and 4 can be set to the SAS address of phy1. The included physical channels are adjusted from only including phy1 to phy1, 2, 3, and 4, that is, phy1, phy2, phy3, and phy4 are aggregated into port1, as shown in Figure 3 (b), so as to achieve the purpose of dynamically controlling the communication bandwidth.

It should be noted that, because phy2, phy3, and phy4 are dynamically aggregated into the SAS port corresponding to phy1, the SAS addresses of phy2, phy3, and phy4 are deleted from the address list, and the SAS address of phy1 is regarded as belonging to the same SAS port. The SAS addresses of phy2, phy3, and phy4 are kept in the address list. In addition, the user node retransmits the untransmitted packets from phy2, phy3, and phy4 before the aggregation. Specifically, the SAS address corresponding to port1 is used for retransmission. The retransmitted packets can be transmitted through four physical channels.

In order to clarify the solution, the method provided in the embodiment of the present application is described below with reference to specific embodiments.

FIG. 4 is a schematic diagram of a topology of a SAS network system according to an embodiment of the present application. As shown in FIG. 4, a method for implementing communication between nodes may include the following steps:

(1) After receiving the socket communication request, the application layer of node-1 obtains the application layer data packet corresponding to the socket communication request and sends the application layer data packet to the TCP / IP stack of node-1 belonging to the software;

(2) The TCP / IP stack of node-1 constructs an Ethernet message carrying the application layer data packet, and sends the Ethernet message to the virtual Ethernet driver of node-1 belonging to the software;

(3) The virtual Ethernet driver of node-1 encapsulates the Ethernet message into a SAS protocol message and sends the SAS protocol message to the SAS-HBA driver of node-1 belonging to the software;

(4) The SAS-HBA driver of node-1 sends the SAS protocol packet to the SAS-HBA of node-1 belonging to the hardware;

(5) The SAS-HBA of node-1 sends the SAS protocol packet to the SAS switch;

(6) The SAS switch forwards the received SAS protocol message to node-n, which is the data receiver;

(7) The SAS-HBA belonging to the node-n belonging to the hardware receives the SAS protocol packet forwarded by the SAS switch and passes it to the SAS-HBA driver belonging to the node-n belonging to the software;

(8) The SAS-HBA driver of node-n sends the received SAS protocol message to the virtual Ethernet driver of node-n belonging to the software;

(9) The virtual Ethernet driver of node-n decapsulates the SAS protocol message into an Ethernet message, and passes the Ethernet message to the TCP / IP protocol stack belonging to the software;

(10) The TCP-IP protocol stack of node-n parses the Ethernet message into an application layer data packet.

Further, the node-1 and node-n SAS-HBAs can monitor the data traffic of each physical channel or a predetermined physical channel, and then dynamically adjust the number of physical channels in the SAS port to achieve dynamic control of TCP / IP communication bandwidth.

It can be seen that, through the solution provided by this specific embodiment, an Ethernet-compatible communication interface of the SAS network system can be realized, thereby reducing the purpose of coupling the application layer and the data transmission layer of the user node.

Corresponding to the foregoing method embodiments, an embodiment of the present application provides a device for implementing inter-node communication, which is applied to a serially connected user node in a small computer system interface SAS network system. As shown in FIG. 5, the device for implementing communication between nodes may include:

The data obtaining unit 510 is configured to obtain target data to be transmitted sent by the target program, where the target program is a program that depends on a communication interface of the Ethernet;

An Ethernet packet constructing unit 520, configured to construct an Ethernet packet carrying the target data;

A packet encapsulating unit 530, configured to encapsulate the Ethernet packet into a SAS protocol packet;

A message sending unit 540, configured to send the SAS protocol message to a SAS-HBA in the user node, so that the SAS-HBA sends the SAS protocol message to the data receiver through a forwarding node The destination user node of the party; when the destination user node receives the SAS protocol message, it decapsulates the SAS protocol message into the Ethernet message, and decompresses the Ethernet message The package is the target data; wherein, the SAS-HBA is a host bus adapter using the SAS protocol.

In the solution provided by the embodiment of the present application, after the user node obtains the target data to be transmitted from the target program, it first encapsulates the target data into an Ethernet message, and then constructs a SAS protocol message and transmits the SAS protocol message. So that the program relying on the communication interface of Ethernet can be applied to the user node. Therefore, through this solution, the communication interface compatible with Ethernet of the SAS network system can be realized, thereby reducing the coupling between the application layer and the data transmission layer of the user node.

Optionally, the message encapsulation unit 530 may include:

Optionally, the message sending unit 540 is specifically configured to:

Optionally, the apparatus further includes:

Optionally, the address resetting unit is specifically configured to:

When the target physical channel is found, disable the target physical channel;

After the setting is completed, the target physical channel is enabled.

An embodiment of the present application further provides an electronic device, as shown in FIG. 6, including a processor 610, a communication interface 620, a memory 630, and a communication bus 640, where the processor 610, the communication interface 620, and the memory 630 pass the communication bus 640. Complete mutual communication,

A memory 630, configured to store a computer program;

The processor 610 is configured to implement a method step for implementing communication between nodes provided in the embodiment of the present application when a program stored in the memory 630 is executed.

The communication bus mentioned in the above electronic device may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, the figure only uses a thick line, but it does not mean that there is only one bus or one type of bus.

The communication interface is used for communication between the aforementioned electronic device and other devices.

The memory may include random access memory (Random Access Memory, RAM), and may also include non-volatile memory (Non-Volatile Memory, NVM), such as at least one disk memory. Optionally, the memory may also be at least one storage device located far from the foregoing processor.

The above processor may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc .; it may also be a digital signal processor (Digital Signal Processing, DSP), special integration Circuit (Application Specific Integrated Circuit, ASIC), Field-Programmable Gate Array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

In addition, an embodiment of the present application further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement an implementation provided by the embodiment of the present application. Method steps for communication between nodes.

In addition, the embodiment of the present application also provides an executable program code, where the executable program code is used to be executed to perform a method step of implementing communication between nodes provided by the embodiment of the present application.

It should be noted that in this article, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations There is any such actual relationship or order among them. Moreover, the terms "including", "comprising", or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or device that includes a series of elements includes not only those elements but also those that are not explicitly listed Or other elements inherent to such a process, method, article, or device. Without more restrictions, the elements defined by the sentence "including a ..." do not exclude the existence of other identical elements in the process, method, article, or equipment that includes the elements.

Each embodiment in this specification is described in a related manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for the relevant parts, refer to the description of the method embodiment.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the present invention. Within the scope of protection.

Claims

A method for implementing communication between nodes, which is characterized in that it is applied to a user node in a serial connection small computer system interface SAS network system; the method includes:

Obtaining target data to be transmitted from the target program; wherein the target program is a program that depends on the communication interface of the Ethernet;

Constructing an Ethernet message carrying the target data;

Encapsulating the Ethernet message into a SAS protocol message;

Sending the SAS protocol message to a SAS-HBA in the user node, so that the SAS-HBA sends the SAS protocol message to a destination user node as a data receiver through a forwarding node; wherein, When receiving the SAS protocol message, the destination user node decapsulates the SAS protocol message into the Ethernet message, and decapsulates the Ethernet message into the target data; wherein The SAS-HBA is a host bus adapter adopting the SAS protocol.
The method according to claim 1, wherein the step of encapsulating the Ethernet packet into a SAS protocol packet comprises:

A SAS header is added to the Ethernet packet, and an Ethernet frame header field in the Ethernet packet is assigned to obtain a SAS protocol packet.
The method according to claim 1, wherein the step of encapsulating the Ethernet packet into a SAS protocol packet comprises:

Aggregating a plurality of Ethernet packets to be transmitted including the Ethernet packet to obtain an aggregated Ethernet packet; wherein the plurality of Ethernet packets to be transmitted correspond to a same data receiver, and the The data volume of multiple Ethernet packets to be transmitted is not greater than a predetermined data volume threshold;

A SAS header is added to the aggregated Ethernet packet, and an Ethernet frame header field in the Ethernet packet is assigned to obtain a SAS protocol packet.
The method according to claim 1, wherein the sending the SAS protocol message to a SAS-HBA in the user node, so that the SAS-HBA passes the SAS protocol through a forwarding node The steps for sending the message to the destination user node as the data receiver include:

Sending the SAS protocol message to the SAS-HBA in the user node, so that the SAS-HBA uses the physical channel with the source SAS address in the SAS protocol message to forward the SAS protocol through the forwarding node The message is sent to the destination user node as the data receiver.
The method according to claim 4, wherein an initial SAS address of each physical channel in the SAS-HBA is different.
The method according to claim 4 or 5, further comprising:

When it is detected that the data flow of the first physical channel in the SAS-HBA meets the predetermined channel busy condition, find the target physical channel that meets the predetermined idle condition; wherein the first physical channel is the Any physical channel or predetermined physical channel;

When the target physical channel is found, the SAS address of the target physical channel is reset to the SAS address of the first physical channel.
The method according to claim 6, wherein the step of resetting the SAS address of the target physical channel to the SAS address of the first physical channel comprises:

Disable the target physical channel;

Setting the SAS address of the target physical channel to the SAS address of the first physical channel;

After the setting is completed, the target physical channel is enabled.
A device for implementing inter-node communication is characterized in that it is applied to a user node in a serial connection small computer system interface SAS network system; the device includes:

A data obtaining unit for obtaining target data to be transmitted from the target program; wherein the target program is a program that depends on a communication interface of the Ethernet;

An Ethernet message constructing unit, configured to construct an Ethernet message carrying the target data;

A message encapsulation unit, configured to encapsulate the Ethernet message into a SAS protocol message;

A message sending unit, configured to send the SAS protocol message to a SAS-HBA in the user node, so that the SAS-HBA sends the SAS protocol message to a data receiver through a forwarding node A destination user node; wherein when the destination user node receives the SAS protocol message, it decapsulates the SAS protocol message into the Ethernet message, and decapsulates the Ethernet message Is the target data; wherein, the SAS-HBA is a host bus adapter using the SAS protocol.
The apparatus according to claim 8, wherein the message encapsulation unit comprises:

The first packet encapsulation subunit is configured to add a SAS header to the Ethernet packet, and assign a value to an Ethernet frame header field in the Ethernet packet to obtain a SAS protocol packet.
The apparatus according to claim 8, wherein the message encapsulation unit comprises:

An aggregation subunit, configured to aggregate multiple Ethernet packets to be transmitted including the Ethernet packet to obtain an aggregated Ethernet packet; wherein the multiple Ethernet packets to be transmitted correspond to the same data The receiver, and the data amount of the plurality of Ethernet packets to be transmitted is not greater than a predetermined data amount threshold;

The second message encapsulation subunit is configured to add a SAS header to the aggregated Ethernet packet, and assign a value to an Ethernet frame header field in the Ethernet packet to obtain a SAS protocol packet.
The apparatus according to claim 8, wherein the message sending unit is specifically configured to:

Sending the SAS protocol message to the SAS-HBA in the user node, so that the SAS-HBA uses the physical channel with the source SAS address in the SAS protocol message to forward the SAS protocol through the forwarding node The message is sent to the destination user node as the data receiver.
The apparatus according to claim 11, wherein an initial SAS address of each physical channel in the SAS-HBA is different.
The device according to claim 11 or 12, wherein the device further comprises:

A physical channel searching unit, configured to find a target physical channel that meets a predetermined idle condition when detecting that the data traffic of the first physical channel in the SAS-HBA meets a predetermined channel busy condition; wherein the first physical channel is Any physical channel or a predetermined physical channel in the SAS-HBA;

The address resetting unit is configured to reset the SAS address of the target physical channel to the SAS address of the first physical channel when the target physical channel is found.
The apparatus according to claim 13, wherein the address resetting unit is specifically configured to:

When the target physical channel is found, disable the target physical channel;

Setting the SAS address of the target physical channel to the SAS address of the first physical channel;

After the setting is completed, the target physical channel is enabled.
An electronic device is a user node in a serial connection small computer system interface SAS network system, characterized in that it includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory Complete communication with each other through the communication bus;

Memory for storing computer programs;

The processor is configured to implement the method steps according to any one of claims 1 to 7 when executing a program stored in the memory.
A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the method steps according to any one of claims 1-7 are implemented.
An executable program code, wherein the executable program code is used to be executed to execute the method steps according to any one of claims 1-7.