WO2020200113A1

WO2020200113A1 - Network device

Info

Publication number: WO2020200113A1
Application number: PCT/CN2020/081750
Authority: WO
Inventors: 丁元翕; 慕长林
Original assignee: 新华三技术有限公司
Priority date: 2019-03-29
Filing date: 2020-03-27
Publication date: 2020-10-08
Also published as: CN109862044A; CN109862044B

Abstract

Provided are a conversion apparatus, a network device, and a data transmission method. The conversion apparatus comprises a message processing unit, a determination unit, a cyclic counter and a continuous read operation unit. The message processing unit is used for receiving a first data message, acquiring a decision parameter from the first data message, and outputting the decision parameter to the determination unit; the determination unit is used for outputting a first command to the continuous read operation unit when the decision parameter is a first decision parameter; the cyclic counter is used for storing the number N of data reads; the continuous read operation unit is used for reading, after receiving the first command, the number N of data reads from the cyclic counter and sending N read operation commands to an interface board such that the interface board returns N pieces of data; and the message processing unit is used for acquiring data information of the N pieces of data, encapsulating the data information into a second data message and sending the second data message to a main control board. By means of the technical solution of the present application, main control board resources are economized.

Description

Internet equipment

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on March 29, 2019 with the application number 201910251463.8 and the invention title is "a conversion device, network equipment and data transmission method", the entire content of which is incorporated by reference In this application.

Background technique

Network equipment (such as routers, switches, firewalls, etc.) includes a main control board and an interface board. The main control board can include PCI-E (Peripheral Component Interconnect Express) interfaces, and the interface board can also include PCI-E (Peripheral Component Interconnect Express) interfaces. E interface, based on this, the main control board can be connected to the interface board through the PCI-E bus, that is, both sides of the PCI-E bus are PCI-E interfaces.

In some application scenarios, the interface board does not have a PCI-E interface, but has a low-speed interface (such as a local bus interface). In order to enable the main control board to interact with the interface board, it needs to be deployed between the main control board and the interface board Conversion device, the conversion device has a PCI-E interface and a low-speed interface, the main control board is connected to the conversion device through a PCI-E bus, and the interface board is connected to the conversion device through a low-speed bus (such as a local bus).

In the above application scenario, in order to read data 1-data 10 from the interface board, the main control board sends a read command to the conversion device, and the conversion device reads data 1 from the interface board and returns data 1 to the main control board. After the main control board obtains data 1, it sends a read command to the conversion device. The conversion device reads data 2 from the interface board, and returns data 2 to the main control board, and so on, until data 1-data is successfully read 10.

Brief description of the drawings

In order to explain the embodiments of the present application and the technical solutions of the prior art more clearly, the following briefly introduces the drawings that need to be used in the embodiments of the present application and the prior art. Obviously, the drawings in the following description are merely present For some of the embodiments of the application, for those of ordinary skill in the art, other drawings can be obtained from these drawings without creative work.

FIG. 1 is a schematic diagram of the hardware structure of a network device in an embodiment of the present application;

2A is a schematic diagram of the hardware structure of a conversion device in an embodiment of the present application;

2B is a schematic diagram of the hardware structure of the conversion device in another embodiment of the present application;

FIG. 2C is a schematic diagram of the hardware structure of the conversion device in another embodiment of the present application;

FIG. 2D is a schematic diagram of the hardware structure of a conversion device in another embodiment of the present application;

2E is a schematic diagram of the hardware structure of the conversion device in another embodiment of the present application;

FIG. 3 is a schematic flowchart of a data transmission method in an embodiment of the present application.

detailed description

In order to make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following further describes the embodiments of the present application in detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.

An embodiment of the application proposes a network device (such as a router, a switch, a firewall, a server, etc.). The network device may include a main control board, an interface board, and a conversion device. Referring to FIG. 1, it is a schematic structural diagram of the network device. The network device may include, but is not limited to: a main control board 10, a conversion device 20, an interface board 30, and an interface board 40. The main control board 10 can be connected to the interface board 40, the main control board 10 can also be connected to the conversion device 20, and the conversion device 20 can be connected to the interface board 30.

In an implementation manner, the conversion device 20 and the main control board 10 may be deployed on the same single board, that is, a single board includes the conversion device 20 and the main control board 10 at the same time. Alternatively, the conversion device 20 may be deployed on a separate single board, that is, the conversion device 20 and the main control board 10 are deployed on different single boards. Of course, the above are only two examples, and the position of the conversion device 20 is not limited. For example, the conversion device 20 may also be deployed on the same single board as the interface board 30, or, for network equipment including a main control board, a network board, and an interface board, the conversion device 20 may also be deployed on the same single board as the network board. There is no restriction on this.

Referring to FIG. 1, the description is given by taking the conversion device 20 deployed on a separate single board as an example.

Among them, the main control board 10 includes a CPU (Central Processing Unit) implemented based on SOC (System on Chip), and the CPU communicates with the interface board 30/interface board 40, that is, to the interface board 30/interface board 40 writes data, and reads data from the interface board 30/interface board 40.

In an achievable way, some interface boards (such as interface board 40) have high-speed interfaces (such as PCI-E interfaces, SGMII (Serial Gigabit Media Independent, serial Gigabit Media Independent) interfaces, etc.). -E interface is taken as an example for description), since the main control board 10 has a PCI-E interface, the main control board 10 and the interface board 40 are directly connected, that is, the main control board 10 and the interface board 40 can pass through a high-speed bus ( Such as PCI-E bus, SGMII bus, etc., in Fig. 1, the PCI-E bus is taken as an example for illustration) connection.

In another achievable way, some interface boards (such as interface board 30) can have low-speed interfaces (such as local bus interface, TDM (Time Division Multiplexing, time division multiplexing) interface, etc.). In Figure 1, the local bus interface Take an example for description), but it does not have a PCI-E interface. Since the main control board 10 has a PCI-E interface but does not have a local bus interface, the main control board 10 can be connected to the interface board 30 through the conversion device 20. In other words, the main control board 10 is not directly connected to the interface board 30.

Further, the conversion device 20 can have a PCI-E interface and a local bus interface. Therefore, the conversion device 20 can be connected to the main control board 10 through the PCI-E interface, that is, the conversion device 20 and the main control board 10 can be connected through the PCI-E interface. -E bus connection. In addition, the conversion device 20 can be connected to the interface board 30 through a local bus interface, that is, the conversion device 20 and the interface board 30 can be connected through a low-speed bus (such as a local bus, a TDM bus, etc.). The local bus is taken as an example in FIG. Description) Connect.

In the above application scenario, the communication process between the main control board 10 and the interface board 40 may include: the main control board 10 writes data to the interface board 40 via the PCI-E bus, and the main control board 10 uses the PCI-E bus The data is read from the interface board 40, and the data writing process and the data reading process will not be repeated.

The communication process between the main control board 10 and the interface board 30 may include: the main control board 10 sends data to the conversion device 20 through the PCI-E bus, and the conversion device 20 writes data to the interface board 30 through the local bus. This data writing process will not be repeated. The main control board 10 sends a read command to the conversion device 20 via the PCI-E bus. The conversion device 20 reads data from the interface board 30 via the local bus, and returns the data to the main control board 10 via the PCI-E bus. In the example, this data reading process is introduced.

In the traditional way, in order to read data from the interface board 30, the main control board 10 sends a read command to the conversion device 20, and the conversion device 20 reads the data from the interface board 30 through the local bus. The data bit width of the local bus is 8. Therefore, the conversion device 20 only reads 8-bit data from the interface board 30 and sends the data to the main control board 10. After the main control board 10 receives the 8-bit data, if the main control board 10 has not read all the data currently, it continues to send the read command to the conversion device 20, and so on.

Assuming that the interface board 30 includes 80 bits of data, the main control board 10 needs to send 10 read commands, the conversion device 20 reads data from the interface board 30 10 times, and the conversion device 20 sends data to the main control board 10 10 times. Obviously, the data reading operation takes a long time. During this period of time, the main control board 10 is always occupied and cannot process other tasks. Other tasks can only wait, which wastes the resources of the main control board 10.

In response to the above findings, in this embodiment of the application, the main control board 10 sends a read command to the conversion device 20, and the conversion device 20 reads data from the interface board 30 through the local bus, and reads the data continuously N times, assuming that N is 5. Then the conversion device 20 reads the data from the interface board 30 continuously 5 times. Since the data bit width of the local bus is 8 bits, the conversion device 20 reads 8 bits of data from the interface board 30 every time, reads 40 bits of data 5 times, and sends the 40 bits of data to the main control board 10. . The main control board 10 sends a read command to the conversion device 20 again, and the conversion device 20 continuously reads data from the interface board 30 N times, and so on.

Assuming that the interface board 30 includes 80 bits of data, the main control board 10 needs to send read commands twice, the conversion device 20 reads data from the interface board 30 10 times, and the conversion device 20 sends data to the main control board 10 twice. Obviously, compared with the traditional method, the number of times that the main control board 10 sends read commands is significantly reduced, and the number of times the conversion device 20 sends data to the main control board 10 is significantly reduced, thereby reducing the time consumed for data reading operations and saving the main control board. 10 resources to improve bandwidth utilization and improve the overall performance of network equipment.

In order to realize the above-mentioned functions, an embodiment of the present application proposes a conversion device. The conversion device can be applied to a network device. The network device can also include a main control board (such as a main control board with a first type interface) and an interface board ( For example, an interface board with a second type of interface), the conversion device may include a first type of interface and a second type of interface, the conversion device is connected to the main control board through the first type of interface, and the conversion device is connected to the interface board through the second type of interface connection. Among them, the first type of interface can be a high-speed interface (such as PCI-E interface, SGMII interface, etc., in Figure 1 taking the PCI-E interface as an example), the second type of interface can be a low-speed interface (such as local bus interface , TDM interface, etc., take the local bus interface as an example in Figure 1 for illustration).

2A, which is a schematic structural diagram of the conversion device 20. The conversion device 20 includes but is not limited to: a message processing unit 21, a determination unit 22, a continuous reading operation unit 23, and a cycle counter 24.

In an implementation manner, the message processing unit 21 is configured to receive a first data message from the main control board 10, obtain a decision parameter from the first data message, and output the decision parameter to the determination unit twenty two. The determining unit 22 is configured to output the first command to the continuous reading operation unit 23 when the decision parameter is the first decision parameter. The loop counter 24 is used to store the number of data reads N, where N is a positive integer greater than 1. The continuous read operation unit 23 is configured to read the number of data reads N from the cycle counter 24 after receiving the first command, and send N read operation commands to the interface board 30, so that the interface board 30 can respond to the N The read operation command returns N data. The message processing unit 21 is further configured to obtain data information of N pieces of data, encapsulate the data information into a second data message, and send the second data message to the main control board 10.

Optionally, in an implementable manner, the message processing unit 21 is further configured to obtain the number of data reads from the first data message, and send the number of data reads to the loop counter 24, so that the loop The counter 24 stores the number of times the data is read. Alternatively, the message processing unit 21 is further configured to determine the number of data reads according to the data carrying length of the first type of interface and the data carrying length of the second type of interface, and send the number of data reads to the loop counter 24 to The loop counter 24 is caused to store the number of data reads.

Wherein, the message processing unit 21 determines the number of data reads according to the data carrying length of the first type of interface and the data carrying length of the second type of interface, which is specifically used to: obtain the interface type of the first type of interface, and determine the interface type with the first type of interface. The first data carrying length corresponding to the interface type of the class interface; the interface type of the second class interface is obtained, and the second data carrying length corresponding to the interface type of the second class interface is determined; then, the first data carrying length and The second data carrying length determines the number of data reads.

Optionally, referring to FIG. 2B, the conversion device 20 may further include: multiple sets of data assembling units 25. The multiple data assembling unit 25 is configured to receive N pieces of data returned by the interface board 30, compose the N pieces of data into payload data, and send the payload data to the message processing unit 21. In this way, the message processing unit 21 can receive the payload data and encapsulate the payload data into a second data message.

Referring to the foregoing embodiment, the message processing unit 21 is configured to obtain data information of N pieces of data, and encapsulate the data information into a second data message. Specifically, if the conversion device 20 does not include multiple sets of data assembling units 25, the data information of the N data is the N data itself returned by the interface board, and the message processing unit 21 can obtain the N data returned by the interface board, and N pieces of data form payload data, and the payload data is encapsulated into a second data message. If the conversion device 20 includes multiple sets of data assembling units 25, the data information of the N pieces of data is the load data sent by the multiple sets of data assembling units 25, and the message processing unit 21 can obtain the load data and encapsulate the load data into The second data message.

Optionally, referring to FIG. 2C, the conversion device 20 may further include: a single read operation unit 26. The determining unit 22 is further configured to output a second command to the single read operation unit 26 when the decision parameter is the second decision parameter. The single read operation unit 26 is configured to send a read operation command to the interface board 30 after receiving the second command, so that the interface board 30 returns a piece of data according to a read operation command. The message processing unit 21 is further configured to obtain data information of the data, encapsulate the data information into a third data message, and send the third data message to the main control board 10.

Optionally, referring to FIG. 2D, the conversion device 20 may further include: a single set of data assembling unit 27. The single-group data assembling unit 27 is configured to receive a piece of data returned by the interface board 30, compose the data into load data, and send the load data to the message processing unit 21. In this way, the message processing unit 21 can receive the payload data and encapsulate the payload data into a third data message.

Referring to the foregoing embodiment, the message processing unit 21 is configured to obtain data information of one piece of data, and encapsulate the data information into a third data message. Specifically, if the conversion device 20 does not include a single set of data assembling unit 27, the data information of a piece of data is a piece of data itself returned by the interface board, and the message processing unit 21 can obtain a piece of data returned by the interface board and compose the data. Load data, and encapsulate the load data into a third data message. If the conversion device 20 includes a single set of data assembling unit 27, the data information of a piece of data is the load data sent by the single set of data assembling unit 27, and the message processing unit 21 can obtain the load data and encapsulate the load data into the first Three data messages.

Optionally, referring to FIG. 2E, the conversion device 20 may further include: an interrupt processing unit 28. The interrupt processing unit 28 is configured to, when receiving an interrupt sent by the interface board 30, send the interrupt to the main control board 10, so that the main control board 10 sends the above-mentioned first data message. Based on this, the message processing unit 21 can receive the first data message from the main control board 10, and then realize data transmission through the cooperation of various units.

Optionally, in the above embodiment, when the decision identifier in the data read address is the first value, then the decision parameter is the first decision parameter; when the decision identifier in the data read address is the second value, then The decision parameter is the second decision parameter.

Based on the above technical solution, in this embodiment of the application, the conversion device reads N data from the interface board, where N is a positive integer greater than 1, instead of reading one data from the interface board, so that N data is read at a time. N data are sent to the main control board. In this way, the time spent in data reading operations can be reduced, and the main control board can be prevented from being occupied by data reading operations for a long time, saving main control board resources, improving bandwidth utilization, improving the efficiency of the main control board obtaining data, and improving the overall network equipment Performance, reduce the occupancy rate of the main control board, save the occupancy time of the main control board, improve data acquisition efficiency, and occupy less logic resources of the conversion device.

The above technical solution will be described in detail below in conjunction with the application scenario shown in FIG. 2E.

2E, the conversion device 20 may include: a message processing unit 21, a judging unit 22, a continuous read operation unit 23, a cycle counter 24, a multiple data assembly unit 25, a single read operation unit 26, and a single set of data assembly Unit 27 and interrupt processing unit 28. Among them, the continuous read operation unit 23, the cycle counter 24, and the multiple sets of data assembling unit 25 belong to the accelerated logic channel, which is used to implement accelerated reading, that is, for each read command of the interface board 30, read multiple times from the interface board 30 data. In addition, the single read operation unit 26 and the single set of data assembling unit 27 belong to non-accelerated logical channels, and there is no need to implement accelerated reading, that is, for each read command of the interface board 30, data is read from the interface board 30 once.

In an achievable manner, the conversion device 20 may include, but is not limited to, a logic chip, such as FPGA (Field Programmable Gate Array), CPLD (Complex Programmable Logic Device), ASIC (Application Specific Integrated Circuit), etc., there is no specific restriction on the type of the conversion device 20.

In an achievable manner, when the interface board 30 has data to be read (that is, data that needs to be sent to the main control board 10), the interface board 30 sends an interrupt to the interrupt processing unit 28 of the conversion device 20 through the interrupt channel. After receiving the interrupt, the processing unit 28 forwards the interrupt to the main control board 10 through the interrupt channel.

After receiving the interrupt, the main control board 10 determines that it needs to read data from the interface board 30. In order to read data from the interface board 30, the main control board 10 may send a first data message to the message processing unit 21 of the conversion device 20, and the first data message may be a TLP (Transaction Layer Interface, transaction layer interface) Message. Of course, the first data message may also be other types of messages, and there is no restriction on this.

Different from the traditional data message, in the embodiments shown in FIGS. 2A-2E, the first data message may carry a decision parameter, which indicates whether to accelerate the data reading operation. For example, if the main control board 10 determines to accelerate the data reading operation, add the first decision parameter that needs to accelerate the data reading operation in the first data message; if the main control board 10 determines not to perform the data reading The operation is accelerated, and a second decision parameter that does not require accelerated processing of the data reading operation is added to the first data message.

Optionally, the main control board 10 may determine whether to accelerate the data reading operation according to the data type of the data to be read. For example, if the data type of the data to be read is business data, the main control board 10 may determine to accelerate the data reading operation, that is, the first data packet may carry the first decision parameter; or, if the data to be read is If the data type of the fetched data is control data, the main control board 10 may determine not to accelerate the data reading operation, that is, the first data message may carry the second decision parameter.

Among them, for control data (such as the state value of a status register of the interface board 30), the control data is usually relatively small, such as 8 bits, and the control data can be completed through one or a few reading processes. Therefore, if the data type of the data to be read is control data, the main control board 10 determines not to accelerate the data reading operation. For business data (such as data sent by other network devices to the interface board 30, etc.), business data is usually relatively large, such as tens of thousands of bits. After multiple reading processes, the reading of business data can be completed. If the data type of the data to be read is business data, the main control board 10 determines to accelerate the data reading operation.

In summary, accelerated processing is not performed for control data, and accelerated processing for business data, so that control data and business data do not affect each other, can ensure the efficiency of control data acquisition, and ensure the acquisition of business data The high efficiency greatly improves the reading efficiency of business data.

In an implementation manner, after the main control board 10 sends the first data packet to the packet processing unit 21 of the conversion device 20, the packet processing unit 21 receives the first data packet. Since the first data message carries the decision parameter, the message processing unit 21 obtains the decision parameter from the first data message and outputs the decision parameter to the determination unit 22. The decision parameter can be the first decision parameter or the first decision parameter. 2. Decision-making parameters.

Further, after the determining unit 22 receives the decision parameter, if the decision parameter is the first decision parameter, the determining unit 22 outputs the first command to the continuous reading operation unit 23. If the decision parameter is the second decision parameter, the determination unit 22 outputs the second command to the single read operation unit 26.

Optionally, the decision parameters included in the first data message may be implemented in the following manner:

Manner 1: Carry the decision identifier in the designated field of the first data message. When the decision identifier is the first value, it represents the first decision parameter for accelerating the data reading operation, and when the decision identifier is the second value, it represents the second decision parameter for not accelerating the data reading operation. Based on this, if the decision identifier is the first value, the determination unit 22 can determine that the decision parameter is the first decision parameter; if the decision identifier is the second value, the decision parameter is determined to be the second decision parameter.

Regarding the first method, when the main control board 10 determines to perform accelerated processing on the data reading operation, the main control board 10 adds the first value to the designated field of the first data message. When the main control board 10 determines not to accelerate the data reading operation, the main control board 10 adds the second value to the designated field of the first data message.

The designated field can be any field of the first data message, and there is no restriction on this. For example, the first data message may include a data field (ie, data field). When the main control board 10 sends the first data message to the conversion device 20, the data field in the first data message is not used. Therefore, this In an embodiment, the decision identifier can be carried by the data field of the first data message.

Manner 2: The data read address in the first data message carries the decision identifier. When the decision identifier in the data read address is the first value, it means the first decision parameter for accelerating the data read operation, and when the decision identifier in the data read address is the second value, it means that the data is not read Operate the second decision parameter for accelerated processing. Based on this, if the decision identifier in the data read address is the first value, the determination unit 22 can determine that the decision parameter is the first decision parameter; if the decision identifier in the data read address is the second value, the determination unit 22 can Determine the decision parameter as the second decision parameter.

In an achievable manner, the data read address can be carried in the first data message, indicating that data needs to be read from this data read address. In this embodiment, when the main control board sends the first data message, the data read address in the first data message may carry the decision identifier. For example, the highest bit of the data read address is used to indicate the decision flag. Alternatively, the second bit of the data read address is used to indicate the decision flag, which is not limited, and the highest bit of the data read address is used as an example in the following to indicate the decision flag.

For example, the highest bit 1 in the data read address "10FFFH" can represent the decision flag. When the decision identifier is the value 1 (assuming the value 1 is the first value), it indicates the first decision parameter.

For another example, the most significant bit 2 in the data read address "20FFFH" can represent the decision flag. When the decision identifier is the value 2 (assuming the value 2 is the second value), it indicates the second decision parameter.

In addition, the value 0 in 10FFFH indicates the interface board for slot 0, and the "FFF" in 10FFFH indicates that data needs to be read from this address. Similarly, the value 0 in 20FFFH indicates the interface board for slot 0, and the "FFF" in 20FFFH indicates that data needs to be read from this address.

Of course, the above is only an example of the data read address, and there is no restriction on this data read address.

Of course, the above method 1 and method 2 are only two examples of decision parameters, and there is no restriction on this.

In an implementation manner, the loop counter 24 is used to store the number of data reads, and the number of data reads is recorded as N, where N is a positive integer greater than one. The cycle counter 24 stores the number of data reads in the following manner:

Manner 1. When the main control board 10 sends a first data message to the message processing unit 21 of the conversion device 20, the first data message may carry the number N of data reads. The message processing unit 21 may obtain the data read count N from the first data message, and send the data read count N to the loop counter 24. After receiving the number N of data reads, the loop counter 24 can store the number N of data reads.

Wherein, the main control board 10 can determine the number of data reads N, and there is no restriction on the determination method. For example, the main control board 10 may obtain the interface type of the first type of interface, and determine the first data carrying length corresponding to the interface type of the first type of interface; obtain the interface type of the second type of interface, and determine the interface type with the second type of interface The second data carrying length corresponding to the interface type of, then, the number of data reading times N is determined according to the first data carrying length and the second data carrying length, and the number of data reading times N is added to the first data message.

Manner 2. The message processing unit 21 determines the number of data reads N according to the data carrying length of the first type of interface and the data carrying length of the second type of interface, and sends the number of data reads N to the loop counter 24 to make the loop The counter 24 stores the number N of data reads. Specifically, the interface type of the first type of interface can be obtained, and the first data carrying length corresponding to the interface type of the first type of interface can be determined; the interface type of the second type of interface can be obtained, and the interface type of the second type of interface can be determined Corresponding second data carrying length; the number of data reads is determined according to the first data carrying length and the second data carrying length.

Wherein, after the message processing unit 21 receives the first data message, if the first data message carries the number of data reads N, the message processing unit 21 may obtain the number of data reads N from the first data message. , And send the number of data reads N to the loop counter 24. If the first data message does not carry the data reading times N, the message processing unit 21 may determine the data reading times N according to the data carrying length of the first type interface and the data carrying length of the second type interface, and read the data The number N is sent to the loop counter 24.

Manner 3: According to the data carrying length of the first type interface and the data carrying length of the second type interface, determine the number of data reads N, and configure the number of data reads N to the loop counter 24. For example, the user can determine the number of data reading times N according to the data carrying length of the first type interface and the data carrying length of the second type interface, and configure the data reading times N to the loop counter 24.

In Mode 1, Mode 2, and Mode 3, the number of data reading times N can be determined according to the data carrying length of the first type interface and the data carrying length of the second type interface, but the execution subject is different. In addition, the corresponding relationship between the interface type of the first type of interface and the first data carrying length, and the corresponding relationship between the interface type of the second type of interface and the second data carrying length can be pre-configured, which is not limited.

Wherein, the conversion device 20 is connected to the main control board 10 through the PCI-E interface, that is, the conversion device 20 sends a data message to the main control board 10 through the PCI-E interface, and the data carrying length of the data message is known, such as 32 One bit, that is, when the conversion device 20 sends a data message to the main control board 10, the data message carries a maximum of 32 bits of data, that is, the first data carrying length corresponding to the interface type of the first type of interface.

In addition, the conversion device 20 is connected to the interface board 30 through a local bus interface, that is, the conversion device 20 reads data from the interface board 30 through the local bus interface. The data carrying length of the data to be read is known, such as 8 bits, that is, In other words, when the conversion device 20 reads data from the interface board 30, it can only read up to 8 bits of data at a time, that is, the second data carrying length corresponding to the interface type of the second type of interface.

In summary, (the first data carrying length corresponding to the interface type of the first type interface/the second data carrying length corresponding to the interface type of the second type interface) can be valued downward, and the value after the downward value The value is the number of data reads N. For example, if the value of (32/8) is taken down, the number of data reads N is 4.

Based on this, the continuous reading operation unit 23 of the conversion device 20 can continuously read data from the interface board 30 4 times, reading 8 bits each time, so that a total of 32 bits are read in 4 reading processes, because the data message A maximum of 32 bits of data can be carried. Therefore, all the read data (ie, 32 bits of data) can be added to the data message, and the data message can be sent to the main control board 10. Obviously, based on the above method, the data bandwidth of the data message can be fully utilized, and the efficiency of data transmission can be improved.

In the foregoing embodiment, the first data carrying length and the second data carrying length refer to the length of the payload data, and do not include the length of the message header. In other words, the data carrying length is the length of the payload data carried in the data message, and does not include the length of the header carried in the data message.

Of course, the above is only an example of determining the number of times N of data reads, and there is no restriction on the determination method. Moreover, in practical applications, the number of data reads N can also be dynamically adjusted according to different situations.

In an achievable manner, after receiving the first command, the continuous read operation unit 23 reads the number of data reads N from the cycle counter 24, and sends N read operation commands to the interface board 30, so that the interface board 30 returns N data to the multiple data assembling unit 25 according to N read operation commands.

Specifically, the continuous read operation unit 23 continuously sends N read operation commands to the interface board 30, that is, reads data to the interface board 30 continuously N times. Each time the interface board 30 receives a read operation command, it returns a piece of data (such as 8-bit data) to the multiple data assembly unit 25 through the local bus interface. Since the interface board 30 can receive N read operation commands, the interface board 30 returns N data to the multiple data assembly unit 25 through the local bus interface. In this way, the multiple sets of data assembling unit 25 can receive N pieces of data and compose the N pieces of data into payload data (that is, payload). For example, the N pieces of data are composed into payload data according to the order of each data, and then the payload data Sent to the message processing unit 21.

In an implementation manner, the conversion device 20 may include a buffer (buffer), and this buffer may store data in a FIFO (First Input First Output) manner. Each time the multi-group data assembling unit 25 receives a piece of data, it stores the currently received piece of data in the buffer, and then determines whether the number of data in the buffer reaches N. If it is not reached, wait for the next data reception. If it has been reached, obtain N data from the buffer, compose the N data into load data, send the load data to the message processing unit 21, and delete the N data from the buffer.

After the message processing unit 21 receives the load data (that is, load data composed of N data, such as 32-bit load data), it encapsulates the load data into a second data message (such as a TLP message, which is based on PCI-E interface data message), and send the second data message to the main control board 10.

In another achievable manner, after receiving the second command, the single read operation unit 26 sends a read operation command to the interface board 30, so that the interface board 30 sends a read operation command to the single group data assembly unit 27 according to the read operation command. Return a piece of data, such as 8-bit data.

Specifically, the single read operation unit 26 may only send a read operation command to the interface board 30. After receiving the read operation command, the interface board 30 may return a data to the single group data assembly unit 27 through the local bus interface. After receiving a piece of data, the group data assembling unit 27 composes the piece of data into payload data (that is, payload), and then sends the payload data to the message processing unit 21.

After the message processing unit 21 receives the payload data (that is, payload data composed of one piece of data, such as 8-bit payload data), it encapsulates the payload data into a third data message (such as a TLP message, which is based on PCI -E interface data message), and send the third data message to the main control board 10.

Based on the above technical solution, in this embodiment of the application, the number of times the main control board sends the first data message is significantly reduced, and the number of times the conversion device sends the second data message to the main control board is significantly reduced, thereby making full use of the second data message Effective bandwidth (for example, the second data message carries 32 bits of data instead of 8 bits of data, that is, carries data that needs several transmissions into one second data message), reducing data read operations Time-consuming, to avoid the main control board being occupied by data reading operations for a long time, save the resources of the main control board, improve bandwidth utilization, improve data acquisition efficiency, reduce the occupancy rate of the main control board, save the time occupied by the main control board, and increase The overall performance of the network equipment occupies less logic resources of the conversion device.

The embodiment of the present application also proposes a network device, which may include a main control board, an interface board, and a conversion device. The conversion device may be connected to the main control board through a first type interface, and the conversion device may be connected to the main control board through a second type interface. The interface board is connected; where:

The main control board is used to send the first data message to the conversion device;

The conversion device is used to obtain the decision parameter from the first data packet after receiving the first data packet; when the decision parameter is the first decision parameter, obtain the number of data reads N, where N is a positive value greater than 1. Integer, and send N read operation commands to the interface board;

Interface board, used to return N data after receiving N read operation commands;

The conversion device is also used to obtain data information of N pieces of data, encapsulate the data information into a second data message, and send the second data message to the main control board.

Optionally, in an implementable manner, the conversion device may also be used to send a read operation command to the interface board when the decision parameter is the second decision parameter;

The interface board can also be used to return a data after receiving the read operation command;

The conversion device can also be used to obtain data information of the data, encapsulate the data information into a third data message, and send the third data message to the main control board.

Optionally, in an implementable manner, the conversion device and the main control board may be deployed on the same single board; or, the conversion device may be deployed on a separate single board.

Optionally, in an implementable manner, when the decision identifier in the data read address is the first value, the decision parameter is the first decision parameter; when the decision identifier in the data read address is the second value , The decision parameter is the second decision parameter.

Optionally, in an achievable manner, the message processing unit may also be used to obtain the number of data reads from the first data message, and send the number of data reads to the loop counter, so that the loop counter stores the data Number of reads; or,

The message processing unit can also be used to determine the number of data reads according to the data carrying length of the first type of interface and the data carrying length of the second type of interface, and send the number of data reads to the loop counter, so that the loop counter stores Number of data reads.

Optionally, in an achievable manner, when the conversion device obtains the number of data reads N, it is specifically used to: obtain the number of data reads N from the first data packet; or, according to the data carrying length of the first type of interface The data carrying length of the second type interface determines the number of data reads N.

Optionally, in an achievable manner, the message processing unit is specifically used to obtain the first type when determining the number of data reading times N according to the data carrying length of the first type interface and the data carrying length of the second type interface. The interface type of the interface, and determine the first data carrying length corresponding to the interface type of the first type of interface; obtaining the interface type of the second type of interface, and determining the second data carrying length corresponding to the interface type of the second type of interface; The number of data reads is determined according to the first data carrying length and the second data carrying length.

Optionally, in an implementable manner, the conversion device may also include multiple sets of data assembling units, multiple sets of data assembling units, for receiving N pieces of data returned by the interface board, forming the N pieces of data into load data, and The payload data is sent to the message processing unit, so that the message processing unit encapsulates the payload data into a second data message.

For the function of each component in the network device, please refer to the above-mentioned embodiment, which will not be repeated here.

Based on the same application concept as the above-mentioned network equipment and conversion device, this embodiment of the application also proposes a data transmission method that can be applied to network equipment. The network equipment includes a main control board, an interface board, and a conversion device. The conversion device passes the first type The interface is connected to the main control board, and the conversion device is connected to the interface board through the second type of interface. As shown in Figure 3, the method may include:

Step 301: The conversion device receives a first data message from the main control board, and obtains a decision parameter from the first data message.

Step 302: When the decision parameter is the first decision parameter, the conversion device obtains the number of data reads N, where N is a positive integer greater than 1, and sends N read operation commands to the interface board, so that the interface board performs the N read operations The command returns N data.

Step 303: The conversion device obtains data information of N pieces of data, encapsulates the data information into a second data packet, and sends the second data packet to the main control board.

Optionally, in an achievable manner, after the conversion device obtains the decision parameter from the first data message, the method further includes: when the decision parameter is the second decision parameter, the conversion device sends a read operation to the interface board Command, so that the interface board returns a piece of data according to the read operation command; the conversion device obtains the data information of the data, encapsulates the data information into a third data message, and sends the third data message to the main control board.

Optionally, in an achievable manner, acquiring the number of data reads N by the conversion device may include: acquiring the number of data reads N from the first data packet; or, according to the data carrying length of the first type of interface and The data carrying length of the second type of interface determines the number of data reads N.

Optionally, in an implementable manner, the conversion device determines the number of data reading times N according to the data carrying length of the first type of interface and the data carrying length of the second type of interface, which may include: obtaining the interface of the first type of interface Type, determine the first data carrying length corresponding to the interface type of the first type of interface; obtain the interface type of the second type of interface, determine the second data carrying length corresponding to the interface type of the second type of interface; according to the first data carrying The length and the second data carrying length determine the number of data reads.

Optionally, in an achievable manner, the conversion device obtains data information of N pieces of data, and encapsulates the data information into a second data message, which may include: receiving N pieces of data returned by the interface board and composing the N pieces of data Load data, encapsulate the load data into a second data message.

The equipment, devices, modules or units explained in the above embodiments may be implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. The specific form of the computer can be a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email receiving and sending device, and a game control A console, a tablet computer, a wearable device, or a combination of any of these devices.

For the convenience of description, when describing the above device, the functions are divided into various units and described separately. Of course, when implementing this application, the functions of each unit can be implemented in the same one or more software and/or hardware.

Those skilled in the art should understand that the embodiments of the present application can be provided as methods, devices, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

This application is described with reference to flowcharts and/or block diagrams of methods, devices, and computer program products according to embodiments of this application. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are generated It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

Moreover, these computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device, The instruction device realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operating steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so that the computer or other programmable equipment is executed The instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

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

Claims

A conversion device, the conversion device is applied to a network device, the network device further includes a main control board and an interface board, the conversion device is connected to the main control board through a first type of interface, and the conversion device is The second type interface is connected to the interface board, wherein: the conversion device includes: a message processing unit, a determination unit, a cycle counter, and a continuous read operation unit;

The message processing unit is configured to receive a first data message from the main control board, obtain a decision parameter from the first data message, and output the decision parameter to a determination unit;

The determining unit is configured to output a first command to the continuous reading operation unit when the decision parameter is the first decision parameter;

The cycle counter is used to store the number of data reads N, where N is a positive integer greater than 1;

The continuous read operation unit is configured to, after receiving the first command, read the number of data reads N from the cycle counter, and send N read operation commands to the interface board, so that The interface board returns N pieces of data according to the N read operation commands;

The message processing unit is further configured to obtain data information of the N pieces of data, encapsulate the data information into a second data message, and send the second data message to the main control board.
The conversion device according to claim 1, further comprising: a single read operation unit;

The determination unit is further configured to output a second command to the single read operation unit when the decision parameter is a second decision parameter;

The single read operation unit is configured to send a read operation command to the interface board after receiving the second command, so that the interface board returns a piece of data according to the one read operation command;

The message processing unit is further configured to obtain data information of the one piece of data, encapsulate the data information into a third data message, and send the third data message to the main control board.
The conversion device according to claim 2, when the decision identifier in the data read address is the first value, the decision parameter is the first decision parameter; when the decision identifier in the data read address is the second value, Then the decision parameter is the second decision parameter.
The conversion device according to claim 1, wherein the message processing unit is further configured to obtain the number of data reads from the first data message, and send the number of data reads to the loop counter to Make the cycle counter store the number of data reads; or,

The message processing unit is further configured to determine the number of data reading times according to the data carrying length of the first type interface and the data carrying length of the second type interface, and sending the data reading times to the loop counter, So that the loop counter stores the number of data reads.
The conversion device according to claim 4, wherein the message processing unit is specifically configured to obtain the first-type interface when determining the data reading times according to the data carrying length of the first-type interface and the data carrying length of the second-type interface And determine the first data carrying length corresponding to the interface type of the first type of interface; obtain the interface type of the second type of interface, and determine the second data corresponding to the interface type of the second type of interface Bearer length; the number of data reads is determined according to the first data bearer length and the second data bearer length.
The conversion device according to claim 1, further comprising: multiple sets of data assembling units;

The multiple sets of data assembling units are configured to receive N pieces of data returned by the interface board, compose the N pieces of data into load data, and send the load data to the message processing unit, so that the The message processing unit encapsulates the payload data into a second data message.
A network device includes a main control board, an interface board, and a conversion device, the conversion device is connected to the main control board through a first type interface, and the conversion device is connected to the interface through a second type interface Board connection; where:

The main control board is configured to send a first data message to the conversion device;

The conversion device is configured to obtain a decision parameter from the first data packet after receiving the first data packet; when the decision parameter is the first decision parameter, obtain the number of data reads N, N is a positive integer greater than 1, and N read operation commands are sent to the interface board;

The interface board is configured to return N pieces of data after receiving the N read operation commands;

The conversion device is further configured to obtain data information of the N pieces of data, encapsulate the data information into a second data message, and send the second data message to the main control board.
The network device according to claim 7, wherein the conversion device is further configured to send a read operation command to the interface board when the decision parameter is a second decision parameter;

The interface board is further configured to return a piece of data after receiving the one read operation command;

The conversion device is also used to obtain data information of the one piece of data, encapsulate the data information into a third data message, and send the third data message to the main control board.
The network device according to claim 7 or 8, wherein the conversion device and the main control board are deployed on the same single board; or, the conversion device is deployed on a separate single board.
A data transmission method is applied to a network device. The network device includes a main control board, an interface board, and a conversion device. The conversion device is connected to the main control board through a first type interface, and the conversion device is connected through a second type interface. Connecting to the interface board, the method includes:

The conversion device receives a first data message from the main control board, and obtains a decision parameter from the first data message;

When the decision parameter is the first decision parameter, the conversion device obtains the number of data reads N, where N is a positive integer greater than 1, and sends N read operation commands to the interface board so that the interface board Return N data according to the N read operation commands;

The conversion device obtains data information of the N pieces of data, encapsulates the data information into a second data message, and sends the second data message to the main control board.