CN114710529B - Data transmission method, device, system, vehicle and storage medium - Google Patents
Data transmission method, device, system, vehicle and storage medium Download PDFInfo
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- 238000003780 insertion Methods 0.000 claims description 4
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0823—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability
- H04L41/083—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability for increasing network speed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/03—Protocol definition or specification
Abstract
The embodiment of the application provides a data transmission method, a data transmission device, electronic equipment and a storage medium, and relates to the technical field of automobiles. Acquiring a data packet sent by a user layer and a network packet fed back by a protocol stack transmission module; protocol learning is carried out according to the data packet sent by the user layer and the network packet fed back by the protocol stack transmission module, and a protocol learning result is obtained; and carrying out packet grouping processing on the data packets based on the protocol learning result, and sending the network packets obtained after the packet grouping processing to a physical layer, so that the data transmission time can be saved, the waste of bandwidth can be reduced, and the 5G requirement can be met.
Description
Technical Field
The embodiment of the application relates to the technical field of automobiles, in particular to a data transmission method, a device, a system, a vehicle and a storage medium.
Background
With the continuous development of economy, automobile revolution speed has entered a high-speed racing track, people have more and more electronic requirements on automobiles, and the automobiles are connected with the mobile internet, so that the automobile has one of the basic essential functions. At the same time, the demand for automobile entertainment is increasing, and the demand for bandwidth is increasing. And the requirements on bandwidth are high for new technologies such as automatic driving functions and images. However, the 4G bandwidth on the current Tbox clearly fails to meet the above requirement, and 5GTbox is becoming a new requirement.
For the processors of 5GTbox, most of the processors adopt a single-core or multi-core low-performance scheme, so that the 5GTbox can only reach less than 40% of the highest value, the ideal bandwidth speed can not be reached, and the 5GTbox speed acceleration is a problem to be solved urgently.
Disclosure of Invention
The embodiment of the application provides a data transmission method, a data transmission device, a data transmission system, a vehicle and a storage medium, so as to solve the problems.
In a first aspect, an embodiment of the present application provides a data transmission method. The method comprises the following steps: acquiring a data packet sent by a user layer and a network packet fed back by a protocol stack transmission module; protocol learning is carried out according to the data packet sent by the user layer and the network packet fed back by the protocol stack transmission module, and a protocol learning result is obtained; and carrying out packet grouping processing on the data packet based on the protocol learning result, and sending the network packet obtained after the packet grouping processing to a physical layer.
In a second aspect, embodiments of the present application provide a data transmission method. The method comprises the following steps: the method comprises the steps of obtaining a data packet sent by a user layer and a protocol learning result of a hardware acceleration module, wherein the protocol learning result is obtained by the hardware acceleration module through protocol learning according to the data packet sent by the user layer and a network packet fed back by a protocol stack transmission module; determining whether the data packet belongs to the first link according to the data packet and the protocol learning result; if the data packet belongs to the first link, selecting to transmit the data through a protocol stack transmission module; if the data packet does not belong to the first link, the data transmission is carried out through the hardware acceleration module.
In a third aspect, embodiments of the present application provide a data transmission apparatus. The device comprises an acquisition module, a learning module and a sending module. The acquisition module is used for acquiring the data packet sent by the user layer and the network packet fed back by the protocol stack transmission module. The learning module is used for carrying out protocol learning according to the data packet sent by the user layer and the network packet fed back by the protocol stack transmission module, so as to obtain a protocol learning result. The sending module is used for carrying out packet grouping processing on the data packet based on the protocol learning result, and sending the network packet obtained after the packet grouping processing to the physical layer.
In a fourth aspect, embodiments of the present application provide a data transmission device. The device comprises an acquisition module, a judging module, a first transmission module and a second transmission module. The acquisition module is used for acquiring a data packet sent by the user layer and a protocol learning result of the hardware acceleration module, wherein the protocol learning result is obtained by the hardware acceleration module through protocol learning according to the data packet sent by the user layer and a network packet fed back by the protocol stack transmission module. The judging module is used for determining whether the data packet belongs to the first link according to the data packet and the protocol learning result. And the first transmission module is used for selecting to transmit the data through the protocol stack transmission module if the data packet belongs to the first link. And the second transmission module is used for selecting to transmit the data through the hardware acceleration module if the data packet does not belong to the first link.
In a fifth aspect, embodiments of the present application provide a data transmission system. The data transmission system comprises a path selection module, a hardware acceleration module and a protocol stack transmission module. The path selection module is used for acquiring a data packet sent by the user layer and selecting to transmit the data through the hardware acceleration module or the protocol stack transmission module according to whether the data packet belongs to the first link. The hardware acceleration module is used for carrying out protocol learning according to the data packet sent by the user layer and the network packet fed back by the protocol stack transmission module if the data transmission is carried out through the protocol stack transmission module, so as to obtain a protocol learning result; or carrying out packet grouping processing on the data packet based on the protocol learning result, and sending the network packet obtained after the packet grouping processing to a physical layer. The protocol stack transmission module is used for packaging the data packet sent by the user layer to obtain a network packet of the protocol stack transmission module, and the network packet of the protocol stack transmission module is respectively sent to the hardware acceleration module and the physical layer.
In a sixth aspect, embodiments of the present application provide a vehicle. The vehicle includes a body and a data transmission system. The data transmission system includes a memory, one or more processors, and one or more applications. Wherein one or more application programs are stored in the memory and configured to perform the data transmission methods provided by the embodiments of the present application when invoked by one or more processors.
In a seventh aspect, embodiments of the present application provide a computer-readable storage medium. The computer readable storage medium has stored therein program code configured to perform the data transmission method provided by the embodiments of the present application when called by a processor.
The embodiment of the application provides a data transmission method, a data transmission device, electronic equipment and a storage medium. Acquiring a data packet sent by a user layer and a network packet fed back by a protocol stack transmission module; protocol learning is carried out according to the data packet sent by the user layer and the network packet fed back by the protocol stack transmission module, and a protocol learning result is obtained; and carrying out packet grouping processing on the data packet based on a protocol learning result, and sending the network packet obtained after the packet grouping processing to a physical layer, so that data transmission can be carried out through an added hardware acceleration module, software processing flows such as routing of a protocol stack, protocol conversion and the like are skipped, and the processing flow of the data packet is simplified. Compared with the data processing and transmission of software, the data transmission through the hardware acceleration module can effectively improve the processing speed of the protocol packet, so that the data transmission time can be saved, the waste of bandwidth can be reduced, and the 5G requirement can be met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of a data transmission system according to an embodiment of the present application;
FIG. 2 is a block diagram of a network system provided in an exemplary embodiment of the present application;
fig. 3 is a block diagram of a network system after an exemplary embodiment of the present application provides a data transmission system according to an embodiment of the present application;
fig. 4 is a flow chart of a data transmission method according to an embodiment of the present application;
fig. 5 is a flow chart of a data transmission method according to another embodiment of the present application;
fig. 6 is a flow chart of a data transmission method according to another embodiment of the present application;
FIG. 7 is a schematic diagram of data transmission through a protocol stack transmission module according to an exemplary embodiment of the present application;
FIG. 8 is a schematic diagram of protocol learning by a hardware acceleration module according to an exemplary embodiment of the present application;
FIG. 9 is a schematic diagram of data transmission through a hardware acceleration module according to an exemplary embodiment of the present application;
FIG. 10 is a schematic diagram of a hardware acceleration module for packet processing of data packets according to an exemplary embodiment of the present application;
fig. 11 is a block diagram of a data transmission device according to an embodiment of the present application;
fig. 12 is a block diagram of a data transmission device according to another embodiment of the present application;
FIG. 13 is a block diagram of a vehicle provided in an embodiment of the present application;
fig. 14 is a block diagram of a computer-readable storage medium according to an embodiment of the present application.
Detailed Description
In order to enable those skilled in the art to better understand the present application, the following description will make clear and complete descriptions of the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application.
In the current 5GTbox, the 5G network is a high-speed interface, and a high-performance processor scheme is required to achieve the maximum performance. However, for Tbox, there is no other high performance interface requirement, and a high performance processing scheme cannot be selected only for one 5G network interface, so that performance waste occurs, and thus a processor scheme with reduced performance clipping can be selected.
No current 5GTbox mentions the speed problem, since there is no high bandwidth demand on the current vehicle traffic. In addition, the 5GTbox does not select a multi-core high-performance processor scheme, and the limitation of power consumption and other reasons is involved, because a mobile network has a basic requirement that: the high-performance chip is selected and used, and the vehicle must be shut down when the vehicle is flameout. For another reason, cost is not allowed.
At present, the 5GTbox is used for transmitting data by selecting a protocol stack of an operating system, and the data transmission mode through the protocol stack can be processed through conversion, routing and the like of the protocol stack, so that the processing time is increased.
For general networks, such as transmission control protocol (Transmission Control Protocol, TCP) and user datagram protocol (User Datagram Protocol, UDP), the elements of the protocol suite are essentially unchanged after sending the data, such as internet protocol (Internet Protocol, IP) data, media access control (Media Access Control, MAC) data, sequence number growth, etc. Therefore, if the protocol stack processing procedures such as routing, network address translation (Network Address Translation, NAT) and the like are skipped, the packet transmission and reception are performed by hardware, so that the time can be saved and the speed-up effect can be achieved.
Referring to fig. 1, fig. 1 is a block diagram of a data transmission system according to an embodiment of the present application, and is also a schematic diagram of an application scenario of a data transmission method according to an embodiment of the present application. The data transmission system 10 comprises a path selection module 11, a hardware acceleration module 12 and a protocol stack transmission module 13 which are connected with each other. The path selection module 11 and the protocol stack transmission module 13 may be disposed in a protocol stack. The hardware acceleration module 12 is a hardware module that is independent of the protocol stack.
The path selection module 11 is configured to obtain a data packet sent by the user layer, and select to perform data transmission through the hardware acceleration module 12 or the protocol stack transmission module 13 according to whether the data packet belongs to a first link. If the data packet belongs to the first link, the data transmission is carried out through the protocol stack transmission module 13, and meanwhile, the data packet sent by the user layer is sent to the hardware acceleration module 12 and the protocol stack transmission module 13 in parallel. If the data packet does not belong to the first link, the data transmission is selected to be performed through the hardware acceleration module 12, and meanwhile, the data packet sent by the user layer is sent to the hardware acceleration module 12.
If the path selection module 11 selects the protocol stack transmission module 13 to perform data transmission, the protocol stack transmission module 13 is configured to encapsulate the data packet sent by the user layer, obtain a network packet of the protocol stack transmission module 13, and send the network packet of the protocol stack transmission module 13 to the hardware acceleration module 12 and the physical layer respectively. The hardware acceleration module 12 is configured to perform protocol learning according to the data packet sent by the user layer and the network packet fed back by the protocol stack transmission module 13, so as to obtain a protocol learning result.
If the path selection module 11 selects to transmit data through the hardware acceleration module 12, the hardware acceleration module 12 may perform packet grouping processing on the data packet sent by the user layer based on the protocol learning result, and send the network packet obtained after the packet grouping processing to the physical layer.
In some embodiments, the hardware acceleration module 12 includes a packet disassembly sub-module and a protocol learning sub-module. The data packet disassembly sub-module is configured to disassemble the data packet and the network packet fed back by the protocol stack transmission module 13, respectively, to obtain an information entry of the data packet and an information entry of the network packet fed back by the protocol stack transmission module 13. The protocol learning sub-module is configured to establish an information mapping table according to the information entry of the data packet and the information entry of the network packet fed back by the protocol stack transmission module 13, where the information mapping table is a protocol learning result.
In some embodiments, the protocol learning submodule includes a sequence number allocation unit and an information insertion unit. The sequence number distribution unit is used for distributing connection sequence numbers according to information items of the data packet, and establishing an information mapping table based on the connection sequence numbers, wherein each connection sequence number corresponds to one information mapping table. The information inserting unit is configured to insert an information entry of the data packet and an information entry of the network packet fed back by the protocol stack transmission module 13 into the information mapping table.
In some embodiments, the hardware acceleration module 12 further includes a protocol acquisition sub-module, a number of times determination sub-module, and a learning stop sub-module. The protocol acquisition sub-module is used for acquiring a transmission protocol from the data packet. The number judgment sub-module is used for continuing protocol learning if the number of protocol learning is smaller than the number of handshaking required for establishing a connection of the transmission protocol. The learning stopping sub-module is used for stopping the protocol learning if the number of times of protocol learning is equal to the number of times that the transmission protocol needs to handshake when establishing one connection, and obtaining a protocol learning result.
In some embodiments, the path selection module 11 includes a first link determination sub-module, a first transmission path selection sub-module, and a second transmission path selection sub-module. The first link judging sub-module is used for determining whether the data packet belongs to the first link according to the data packet and the protocol learning result. The first transmission path selection sub-module is configured to select to perform data transmission through the protocol stack transmission module 13 if the data packet belongs to the first link. The second transmission path selection sub-module is configured to select to perform data transmission through the hardware acceleration module 12 if the data packet does not belong to the first link.
In some embodiments, the first link determination submodule includes an information item acquisition unit, a first determination unit, and a second determination unit. The information item obtaining sub-module is used for disassembling the data packet to obtain an information item. The first judging unit is used for determining that the data packet does not belong to the first link if an information item exists in the protocol learning result. And the second judging unit is used for determining that the data packet belongs to the first link if no information item exists in the protocol learning result.
Referring to fig. 2, fig. 2 is a block diagram of a network system according to an exemplary embodiment of the present application. As shown in fig. 2, the standard network system comprises three parts, namely a user layer, a protocol stack and a device physical layer, wherein the protocol stack comprises a transmission layer, a network layer and a data link layer. And the user layer sends the data packet to the protocol stack through the system call of the socket interface. The protocol stack receives the data packet through the transmission layer, performs software processing such as routing table traversal, iptable table traversal and the like on the data packet through the network layer to obtain a complete network packet, forwards the network packet to the data link layer, and sends the network packet to the equipment physical layer through the data link layer, so that data transmission is performed. The software processes such as the routing table traversal and the Iptable table traversal are processed by a kernel thread or soft interrupt mode, the processing efficiency is low, the requirements of a 4G network can be met, but the average bandwidth requirement of the 5G downlink bandwidth under 700Mbps cannot be met.
Referring to fig. 3, fig. 3 is a block diagram of a network system after the data transmission system provided by an embodiment of the present application is adopted according to an exemplary embodiment of the present application. In some embodiments, the data packets may be transferred to the hardware acceleration module through the user layer, the transport layer. In other embodiments, the data packet may be transferred to the hardware acceleration module through the user layer, the transport layer, and the network layer. The network system shown in fig. 3 skips the protocol processing procedures of routing, protocol conversion, firewall and the like in the protocol stack, and the hardware acceleration module can directly perform packet processing on the data packet.
That is, the data transmission system 10 provided in the embodiment of the present application is additionally provided with the hardware acceleration module, and processes and transmits data through the hardware acceleration module when the data packet does not belong to the first link, compared with the software processing flow of the protocol stack, the data processing and transmission speed can be greatly improved, the data transmission time can be saved, the requirement of 5G on broadband can be met, the bandwidth waste is reduced, and the mobile internet era of high-speed development is kept up.
Referring to fig. 4, fig. 4 is a flow chart of a data transmission method according to an embodiment of the present application. The data transmission method may be applied to the above-described data transmission system 10, and in particular, may be applied to the hardware acceleration module 12 in the data transmission system 10. The data transmission method may include the following steps S110 to S130.
Step S110, a data packet sent by a user layer and a network packet fed back by a protocol stack transmission module are obtained.
The network packet fed back by the protocol stack transmission module is a data packet obtained by performing software processing such as routing table traversal, iptable table traversal and the like on the data packet by the protocol stack.
In some embodiments, the user layer sends a data packet to a path selection module in the protocol stack, and the path selection module determines that the data packet does not belong to the first link, and may send the data packet to the hardware acceleration module.
And step S120, carrying out protocol learning according to the data packet sent by the user layer and the network packet fed back by the protocol stack transmission module to obtain a protocol learning result.
The protocol learning may be to analyze information items of the data packet and the network packet, and supplement the information items to an information mapping table in the hardware acceleration module. The information item may include information such as an IP source address, a destination IP address, a MAC source address, a destination MAC address, a packet sequence number, a version, and the like. The information mapping table may be pre-established in a buffer area of the hardware acceleration module, or may be established in a protocol learning process, which is not limited herein. The information mapping table may be a protocol learning result.
In some embodiments, the transport protocol may be obtained from a data packet. If the number of protocol learning is less than the number of handshakes required for establishing a connection by the transmission protocol, continuing to learn the protocol. If the number of protocol learning times is equal to the number of times that the transmission protocol needs handshaking when establishing one connection, stopping protocol learning, and obtaining a protocol learning result. The number of handshakes required for a transport protocol to establish a connection depends on the transport protocol, e.g. the number of handshakes required for a TCP protocol to establish a sequential connection is 3. When the number of times of protocol learning is equal to the number of times that the transmission protocol needs handshaking when establishing one connection, protocol learning is stopped, so that the integrity and the accuracy of a protocol learning result can be ensured by ensuring the integrity of the connection, and subsequent data processing and transmission errors caused by inaccurate protocol learning results are avoided.
And step S130, carrying out packet grouping processing on the data packet based on the protocol learning result, and sending the network packet obtained after the packet grouping processing to a physical layer.
The packet processing refers to supplementing the data packet based on the protocol learning result, that is, the above-mentioned information mapping table. Specifically, the packet processing may be to fill the protocol header of the data packet, fill the IP header according to the IP mapping table, fill the MAC address according to the MAC mapping table, fill the timestamp of the transport layer protocol, the sequence number, the protocol subclass, and so on. The IP mapping table and the MAC mapping table both belong to the information mapping table.
In the data transmission method provided by the embodiment of the application, the hardware acceleration module is used for data transmission, software processing flows such as routing of a protocol stack, protocol conversion and the like are skipped, and the processing flow of a data packet is simplified. Compared with the data processing and transmission of software, the data transmission through the hardware acceleration module can effectively improve the processing speed of the protocol packet, so that the data transmission time can be saved, the waste of bandwidth can be reduced, and the 5G requirement can be met. When the number of times of protocol learning is equal to the number of times that the transmission protocol needs handshaking when establishing one connection, protocol learning is stopped, so that the integrity and the accuracy of a protocol learning result can be ensured by ensuring the integrity of the connection, and subsequent data processing and transmission errors caused by inaccurate protocol learning results are avoided.
Referring to fig. 5, fig. 5 is a flowchart of a data transmission method according to another embodiment of the present application. The data transmission method may be applied to the above-described data transmission system 10, and in particular, may be applied to the hardware acceleration module 12 in the data transmission system 10. The data transmission method may include the following steps S210 to S240.
Step S210, a data packet sent by a user layer and a network packet fed back by a protocol stack transmission module are obtained.
The specific description of step S210 is referred to step S110, and will not be repeated here.
Step S220, the data packet and the network packet fed back by the protocol stack transmission module are disassembled respectively to obtain the information item of the data packet and the information item of the network packet fed back by the protocol stack transmission module.
As described above, the information entry includes information such as an IP source address, a destination IP address, a MAC source address, a destination MAC address, a packet number, a version, and the like. The network packet fed back by the protocol stack transmission module contains more information items than the data packet.
Step S230, an information mapping table is established according to the information item of the data packet and the information item of the network packet fed back by the protocol stack transmission module.
In some embodiments, the implementation of step S230 may be as follows: connection sequence numbers can be allocated according to information items of the data packet, an information mapping table is established based on the connection sequence numbers, and each connection sequence number corresponds to one information mapping table; and inserting the information items of the data packet and the information items of the network packet fed back by the protocol stack transmission module into an information mapping table. The connection sequence number may be specifically allocated according to the entry information of the source IP, the destination IP, the source MAC, the destination MAC, the port, and the like, and the connection sequence number may be specifically allocated according to one or more entry information.
In the steps S220 to S230, the part not described in detail refers to the step S120, and will not be described again.
And step S240, carrying out packet grouping processing on the data packet based on the information mapping table, and sending the network packet obtained after the packet grouping processing to a physical layer.
The specific description of step S240 is referred to step S130, and will not be repeated here.
In the data transmission method provided by the embodiment of the application, the hardware acceleration module is used for data transmission, software processing flows such as routing of a protocol stack, protocol conversion and the like are skipped, and the processing flow of a data packet is simplified. Compared with the data processing and transmission of software, the data transmission through the hardware acceleration module can effectively improve the processing speed of the protocol packet, so that the data transmission time can be saved, the waste of bandwidth can be reduced, and the 5G requirement can be met.
Referring to fig. 6, fig. 6 is a flowchart of a data transmission method according to another embodiment of the present application. The data transmission method may be applied to the above-described data transmission system 10, and in particular, may be applied to the path selection module 11 in the data transmission system 10. The data transmission method may include the following steps S310 to S340.
Step S310, a data packet sent by a user layer and a protocol learning result of a hardware acceleration module are obtained.
The protocol learning result is obtained by the hardware acceleration module performing protocol learning according to the data packet sent by the user layer and the network packet fed back by the protocol stack transmission module.
Step S320, determining whether the data packet belongs to the first link according to the data packet and the protocol learning result.
In some embodiments, the data packet may be disassembled to obtain information entries. If there is an information entry in the protocol learning result, it is determined that the data packet does not belong to the first link, and step S340 is performed. If no information item exists in the protocol learning result, it is determined that the data packet belongs to the first link, and step S330 is executed. The information items obtained by disassembling the data packet may include one or more of the above information such as the IP source address, the destination IP address, the MAC source address, the destination MAC address, the data packet sequence number, the version, etc., and what specific information item information may be determined according to the actual needs, which embodiment of the present application is not specifically limited herein. For example, taking an information item as a source IP address as an example, disassembling a data packet to obtain a source IP address as a, and if the source IP address as a exists in a protocol learning result (i.e., an information mapping table), determining that the data packet does not belong to a first link; otherwise, determining that the data packet belongs to the first link.
Step S330, selecting to transmit data through the protocol stack transmission module.
Step S340, selecting to transmit data through the hardware acceleration module.
In the data transmission method provided by the embodiment of the application, whether the data packet belongs to the first link is judged to select to transmit data through the protocol stack transmission module or the hardware acceleration module, so that when the data packet belongs to the first link, the hardware acceleration module can learn a protocol according to the data packet sent by the user layer and the network packet fed back by the protocol stack transmission module to obtain a protocol learning result, when the data packet does not belong to the first link, the hardware acceleration module can transmit the data packet based on the protocol learning result, and therefore, the data transmission can be performed through the hardware acceleration module, a software processing flow of the protocol stack is skipped, the time can be effectively saved, and the data transmission speed is improved.
Referring to fig. 7 to fig. 10 together, fig. 7 is a schematic diagram of data transmission through a protocol stack transmission module according to an exemplary embodiment of the present application, fig. 8 is a schematic diagram of protocol learning by a hardware acceleration module according to an exemplary embodiment of the present application, fig. 9 is a schematic diagram of data transmission through a hardware acceleration module according to an exemplary embodiment of the present application, and fig. 10 is a schematic diagram of packet grouping processing by a hardware acceleration module according to an exemplary embodiment of the present application. If the data input by the Forward function in the user layer or the protocol stack is the first-time link data, the link needs to be established first. The link establishment involves routing, protocol conversion, firewall and other processing flows, and finally the data packet is sent out from the hardware physical layer. When the data is the first linked data, as shown in fig. 7, the data packet is sent to the protocol stack, so that the protocol stack establishes a link with the user layer, and the protocol stack transmission module performs a series of processes such as routing table traversal and Iptable table traversal on the data packet to generate a complete network packet, and sends the data packet to the device physical layer; meanwhile, the data packet is also sent to the hardware acceleration module, so that the hardware acceleration module performs protocol learning according to the data packet and the network packet fed back by the protocol stack transmission module, and generates a protocol learning result, so that data transmission can be performed based on the protocol learning result when the subsequent data is not the first-time linked data.
As shown in fig. 8, the protocol learning may be to analyze information entries in the data packet and the network packet, and cache the information entries in an information mapping table, where the information entries may be information such as an IP source address, a destination IP address, an MAC source address, a destination MAC address, a data packet sequence number, a version, and the like. Specifically, connection sequence numbers may be allocated according to information items, such as IP addresses and ports, each connection sequence number corresponds to an information mapping table, and then the information mapping table is filled with the corresponding information items. After protocol learning of the number of times that handshake is required for establishing a connection with the transmission protocol, protocol learning is stopped, and at this time, the hardware acceleration module can perform data transmission according to the protocol learning result. The information mapping table established according to the protocol learning method shown in fig. 8 is bound to the present connection.
As shown in fig. 9, if the data input by the user layer or the Forward function is not the first-time linked data, the data packet may be transmitted through the hardware acceleration module, where the input and output of the protocol stack may be selected to be disconnected, or the input and output of the protocol stack may be selected not to be disconnected, but the data packet may not be input to the protocol stack.
If the hardware acceleration module receives the data packet which is not the first link, the hardware acceleration module can be matched with the information item corresponding to the connection, reads information such as IP, MAC and the like from the information item, and performs packet grouping processing on the data packet. Specifically, the packet processing of the data packet may be as shown in fig. 10, and the protocol header of the data packet input by the user layer or the Forward function may be filled based on the information mapping table in the hardware acceleration module, for example, the IP header is filled according to the IP mapping table, the MAC address is filled according to the MAC mapping table, the timestamp, the sequence number, the protocol subclass of the transport layer protocol are filled. After the above series of filling the protocol header, a complete data packet can be obtained, and the hardware acceleration module can directly send the complete data packet to the device physical layer (i.e. the hardware interface).
It should be noted that, although only the case of transmitting data is described in all the above embodiments, it will be understood by those skilled in the art that the case of receiving data is similar to the case of transmitting data, the only difference being that the transmitting data is transmitted from the application layer to the device physical layer, and the receiving data is transmitted from the device physical layer to the application layer.
Referring to fig. 11, fig. 11 is a block diagram of a data transmission device according to an embodiment of the present application. The data transmission apparatus 400 may be applied to the above-described data transmission system 10, and in particular, may be applied to the hardware acceleration module 12 in the above-described data transmission system 10. The data transmission device 400 includes an acquisition module 410, a learning module 420, and a sending module 430. The acquisition module is used for acquiring the data packet sent by the user layer and the network packet fed back by the protocol stack transmission module. The learning module is used for carrying out protocol learning according to the data packet sent by the user layer and the network packet fed back by the protocol stack transmission module, so as to obtain a protocol learning result. The sending module is used for carrying out packet grouping processing on the data packet based on the protocol learning result, and sending the network packet obtained after the packet grouping processing to the physical layer.
In some embodiments, learning module 420 includes a disassembly sub-module and a learning sub-module. The disassembly sub-module is used for respectively disassembling the data packet and the network packet fed back by the protocol stack transmission module to obtain the information item of the data packet and the information item of the network packet fed back by the protocol stack transmission module. The learning sub-module is used for establishing an information mapping table according to the information item of the data packet and the information item of the network packet fed back by the protocol stack transmission module, wherein the information mapping table is a protocol learning result.
In some embodiments, the learning submodule includes an assignment unit and an insertion unit. The allocation unit is used for allocating connection sequence numbers according to the information items of the data packet, and establishing an information mapping table based on the connection sequence numbers, wherein each connection sequence number corresponds to one information mapping table. The inserting unit is used for inserting the information item of the data packet and the information item of the network packet fed back by the protocol stack transmission module into the information mapping table.
In some embodiments, learning module 420 also includes an acquisition sub-module and a stop sub-module. The acquisition sub-module is used for acquiring a transmission protocol from the data packet. The learning sub-module is further configured to continue the protocol learning if the number of times of protocol learning is less than the number of times that the transmission protocol needs to handshake to establish a connection. And the stopping sub-module is used for stopping protocol learning if the number of protocol learning times is equal to the number of times that the transmission protocol needs handshaking when establishing one connection, and obtaining a protocol learning result.
Referring to fig. 12, fig. 12 is a block diagram of a data transmission device according to another embodiment of the present application. The data transmission device 500 may be applied to the above-described data transmission system 10, and in particular, may be applied to the path selection module 11 in the above-described data transmission system 10. The data transmission device 500 includes an acquisition module 510, a judgment module 520, a first transmission module 530, and a second transmission module 540. The acquisition module is used for acquiring a data packet sent by the user layer and a protocol learning result of the hardware acceleration module, wherein the protocol learning result is obtained by the hardware acceleration module through protocol learning according to the data packet sent by the user layer and a network packet fed back by the protocol stack transmission module. The judging module is used for determining whether the data packet belongs to the first link according to the data packet and the protocol learning result. And the first transmission module is used for selecting to transmit the data through the protocol stack transmission module if the data packet belongs to the first link. And the second transmission module is used for selecting to transmit the data through the hardware acceleration module if the data packet does not belong to the first link.
In some embodiments, the determination module 520 includes a disassembly sub-module, a first determination sub-module, and a second determination sub-module. The disassembly sub-module is used for disassembling the data packet to obtain an information item. The first judging submodule is used for determining that the data packet does not belong to the first link if an information item exists in the protocol learning result. And the second judging sub-module is used for determining that the data packet belongs to the first link if no information item exists in the protocol learning result.
It will be apparent to those skilled in the art that the data transmission device 400 provided in the embodiment of the present application may perform the steps S110 to S130 and the steps S210 to S240, and the data transmission device 500 may perform the steps S310 to S340. The specific working process of the above device and module may refer to a process corresponding to the data transmission method in the embodiment of the present application, which is not described herein again.
In the embodiments provided herein, the modules shown or discussed are coupled, directly coupled, or communicatively coupled to each other via some interfaces, devices, or modules, which may be electrical, mechanical or otherwise.
In addition, each functional module in the embodiments of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module. The integrated modules may be implemented in hardware or in a functional module of software, which is not limited in this embodiment of the present application.
Referring to fig. 13, fig. 13 is a block diagram of a vehicle according to an embodiment of the present application. The vehicle 600 includes a body 610 and a data transmission system 620. The data transmission system 620 may include one or more of the following components: the memory 621, the one or more processors 622, and one or more application programs, wherein the one or more application programs may be stored in the memory 621 and configured to, when invoked by the one or more processors 622, cause the one or more processors 622 to perform the above-described data transmission methods provided by the embodiments of the present application.
Processor 622 may include one or more processing cores. The processor 622 uses various interfaces and lines to connect various portions of the overall data transmission system 620, for executing or executing instructions, programs, code sets, or instruction sets stored in the memory 621, and for invoking execution or data stored in the memory 621, performing various functions of the data transmission system 620, and processing data. Alternatively, the processor 622 may be implemented in hardware in at least one of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA). The processor 622 may integrate one or a combination of several of a central processing unit (Central Processing Unit, CPU), an image processor (Graphics Processing Unit, GPU) and a modem. The CPU mainly processes an operating system, a user interface, an application program and the like; the GPU is used for being responsible for rendering and drawing of display content; the modem is used to handle wireless communications. It will be appreciated that the modem may not be integrated into the processor 622 and may be implemented solely by a single communication chip.
The Memory 621 may include a random access Memory (Random Access Memory, RAM) or a Read-Only Memory (ROM). The memory 621 may be used to store instructions, programs, code, sets of codes, or instruction sets. The memory 621 may include a stored program area and a stored data area. The storage program area may store instructions for implementing an operating system, instructions for implementing at least one function, instructions for implementing the various method embodiments described above, and the like. The storage data area may store data or the like created by the data transfer system 620 in use.
Referring to fig. 14, fig. 14 is a block diagram illustrating a computer readable storage medium according to an embodiment of the present application. The computer readable storage medium 700 has stored therein a program code 710, the program code 710 being configured to, when called by a processor, cause the processor to perform the above-described data transmission method provided by the embodiments of the present application.
The computer readable storage medium 700 may be an electronic Memory such as a flash Memory, an Electrically erasable programmable read-Only Memory (EEPROM), an erasable programmable read-Only Memory (Erasable Programmable Read-Only Memory, EPROM), a hard disk, or a ROM. Optionally, the computer readable storage medium 700 comprises a Non-volatile computer readable medium (Non-Transitory Computer-Readable Storage Medium, non-TCRSM). The computer readable storage medium 700 has memory space for program code 710 that performs any of the method steps described above. These program code 710 may be read from or written to one or more computer program products. Program code 710 may be compressed in a suitable form.
In summary, the embodiments of the present application provide a data transmission method, apparatus, electronic device, and storage medium. Acquiring a data packet sent by a user layer and a network packet fed back by a protocol stack transmission module; protocol learning is carried out according to the data packet sent by the user layer and the network packet fed back by the protocol stack transmission module, and a protocol learning result is obtained; and carrying out packet grouping processing on the data packet based on a protocol learning result, and sending the network packet obtained after the packet grouping processing to a physical layer, so that data transmission can be carried out through an added hardware acceleration module, software processing flows such as routing of a protocol stack, protocol conversion and the like are skipped, and the processing flow of the data packet is simplified. Compared with the data processing and transmission of software, the data transmission through the hardware acceleration module can effectively improve the processing speed of the protocol packet, so that the data transmission time can be saved, the waste of bandwidth can be reduced, and the 5G requirement can be met.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not drive the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims (11)
1. A method of data transmission, for application to a hardware acceleration module that is independent of a protocol stack, the method comprising:
acquiring a data packet sent by a user layer;
when the data packet sent by the user layer belongs to the first link, acquiring a data packet fed back by a protocol stack transmission module in a protocol stack, wherein the protocol stack transmission module comprises a transmission layer, a network layer and a data link layer; and carrying out protocol learning according to the data packet sent by the user layer and the data packet fed back by the protocol stack transmission module, wherein the protocol learning comprises: respectively disassembling a data packet sent by a user layer and a data packet fed back by a protocol stack transmission module to obtain an information item of the data packet sent by the user layer and an information item of the data packet fed back by the protocol stack transmission module, wherein the information item comprises a source IP address, a destination IP address, a source MAC address, a destination MAC address, a data packet sequence number and a transmission protocol version; distributing connection sequence numbers according to information items of data packets sent by a user layer, and establishing an information mapping table based on the connection sequence numbers, wherein each connection sequence number corresponds to one information mapping table; inserting information items of the data packet sent by the user layer and the information items of the data packet fed back by the protocol stack transmission module into an information mapping table;
And when the data packet sent by the user layer does not belong to the first link, filling the protocol header of the data packet sent by the user layer by adopting an information mapping table to obtain a filled data packet, and sending the filled data packet to a physical layer.
2. The method of claim 1, wherein when the packet sent by the user plane belongs to a first link, the method further comprises:
acquiring a transmission protocol from a data packet sent by the user layer;
if the number of times of protocol learning is smaller than the number of times that the transmission protocol needs handshaking when establishing a connection, continuing to execute the protocol learning;
and if the number of times of protocol learning is equal to the number of times that the transmission protocol needs handshaking for establishing one connection, stopping executing the protocol learning.
3. A data transmission method, comprising:
acquiring a data packet sent by a user layer and an information mapping table sent by a hardware acceleration module outside a protocol stack, wherein the information mapping table is learned by the hardware acceleration module according to the following modes: acquiring a data packet sent by a user layer; when a data packet sent by a user layer belongs to a first link, acquiring a data packet fed back by a protocol stack transmission module in a protocol stack, wherein the protocol stack transmission module comprises a transmission layer, a network layer and a data link layer; and carrying out protocol learning according to the data packet sent by the user layer and the data packet fed back by the protocol stack transmission module, wherein the protocol learning comprises: respectively disassembling a data packet sent by a user layer and a data packet fed back by a protocol stack transmission module to obtain an information item of the data packet sent by the user layer and an information item of the data packet fed back by the protocol stack transmission module, wherein the information item comprises a source IP address, a destination IP address, a source MAC address, a destination MAC address, a data packet sequence number and a transmission protocol version; distributing connection sequence numbers according to information items of data packets sent by a user layer, and establishing an information mapping table based on the connection sequence numbers, wherein each connection sequence number corresponds to one information mapping table; inserting information items of the data packet sent by the user layer and the information items of the data packet fed back by the protocol stack transmission module into an information mapping table;
Determining whether the data packet sent by the user layer belongs to a first link or not according to the data packet sent by the user layer and the information mapping table;
if the data packet sent by the user layer belongs to the first link, selecting to transmit data through the protocol stack transmission module;
and if the data packet sent by the user layer does not belong to the first link, selecting to perform data transmission through the hardware acceleration module, wherein the hardware acceleration module is used for filling a protocol header of the data packet sent by the user layer by adopting the information mapping table when the data packet sent by the user layer does not belong to the first link, obtaining the filled data packet, and sending the filled data packet to a physical layer.
4. The method of claim 3, wherein determining whether the data packet sent by the user layer belongs to the first link according to the data packet sent by the user layer and the information mapping table comprises:
disassembling the data packet sent by the user layer to obtain an information item;
if the information item exists in the information mapping table, determining that the data packet sent by the user layer does not belong to the first link;
if the information mapping table does not contain the information item, determining that the data packet sent by the user layer belongs to the first link.
5. A data transmission apparatus for use with a hardware acceleration module that is independent of a protocol stack, the apparatus comprising:
the acquisition module is used for acquiring the data packet sent by the user layer; when the data packet sent by the user layer belongs to the first link, acquiring a network packet fed back by a protocol stack transmission module in a protocol stack, wherein the protocol stack transmission module comprises a transmission layer, a network layer and a data link layer;
the learning module is used for carrying out protocol learning according to the data packet sent by the user layer and the data packet fed back by the protocol stack transmission module; the learning module comprises a disassembling sub-module and a learning sub-module, the learning sub-module comprises an allocation unit and an insertion unit, and the protocol learning comprises: the disassembly sub-module is used for respectively disassembling the data packet sent by the user layer and the data packet fed back by the protocol stack transmission module to obtain an information item of the data packet sent by the user layer and an information item of the data packet fed back by the protocol stack transmission module, wherein the information item comprises a source IP address, a destination IP address, a source MAC address, a destination MAC address, a data packet sequence number and a transmission protocol version; the allocation unit is used for allocating connection sequence numbers according to information items of the data packets sent by the user layer, and establishing an information mapping table based on the connection sequence numbers, wherein each connection sequence number corresponds to one information mapping table; the inserting unit is used for inserting the information item of the data packet sent by the user layer and the information item of the data packet fed back by the protocol stack transmission module into the information mapping table;
And the sending module is used for filling the protocol header of the data packet sent by the user layer by adopting the information mapping table when the data packet sent by the user layer does not belong to the first link, obtaining the filled data packet, and sending the filled data packet to the physical layer.
6. A data transmission system, comprising:
the path selection module is used for acquiring a data packet sent by the user layer and an information mapping table sent by a hardware acceleration module which is independent of a protocol stack; determining whether the data packet sent by the user layer belongs to a first link according to the data packet and the information mapping table, and selecting to transmit data through a hardware acceleration module or a protocol stack transmission module in a protocol stack, wherein the protocol stack transmission module comprises a transmission layer, a network layer and a data link layer;
the protocol stack transmission module is used for packaging the data packet sent by the user layer to obtain the data packet of the protocol stack transmission module, and respectively sending the data packet of the protocol stack transmission module to the hardware acceleration module and the physical layer, wherein the protocol stack transmission module comprises a transmission layer, a network layer and a data link layer;
the hardware acceleration module is used for carrying out protocol learning according to the data packet sent by the user layer and the data packet fed back by the protocol stack transmission module if the data packet sent by the user layer belongs to the first link; the hardware acceleration module comprises a data packet disassembly sub-module and a protocol learning sub-module, the protocol learning sub-module comprises a sequence number distribution unit and an information insertion unit, and the protocol learning comprises: the data packet disassembly submodule is used for respectively disassembling the data packet sent by the user layer and the data packet fed back by the protocol stack transmission module to obtain an information item of the data packet sent by the user layer and an information item of the data packet fed back by the protocol stack transmission module, wherein the information item comprises a source IP address, a destination IP address, a source MAC address, a destination MAC address, a data packet sequence number and a transmission protocol version; the serial number distribution unit is used for distributing connection serial numbers according to information items of the data packet sent by the user layer, and establishing an information mapping table based on the connection serial numbers, wherein each connection serial number corresponds to one information mapping table; the information inserting unit is used for inserting information items of the data packet sent by the user layer and information items of the data packet fed back by the protocol stack transmission module into the information mapping table;
And the hardware acceleration module is further configured to, if the data packet sent by the user layer does not belong to the first link, fill the protocol header of the data packet sent by the user layer by using the information mapping table to obtain a filled data packet, and send the filled data packet to the physical layer.
7. The system of claim 6, wherein the hardware acceleration module further comprises a protocol acquisition sub-module, a number of times determination sub-module, and a learning stop sub-module, wherein:
the protocol acquisition sub-module is used for acquiring a transmission protocol from the data packet sent by the user layer;
the number judgment sub-module is used for notifying the hardware acceleration module to continue to execute the protocol learning if the number of the protocol learning is smaller than the number of handshaking required by the transmission protocol to establish one connection;
and the learning stopping sub-module is used for notifying the hardware acceleration module to stop executing the protocol learning if the number of times of protocol learning is equal to the number of times that the transmission protocol needs to be handshaking when one connection is established.
8. The system of claim 7, wherein the path selection module comprises a first link determination sub-module, a first transmission path selection sub-module, and a second transmission path selection sub-module, wherein:
The first link judging sub-module is used for determining whether the data packet sent by the user layer belongs to a first link or not according to the data packet sent by the user layer and the information mapping table;
the first transmission path selection sub-module is configured to select to perform data transmission through the protocol stack transmission module if the data packet sent by the user layer belongs to a first link;
and the second transmission path selection sub-module is used for selecting to transmit data through the hardware acceleration module if the data packet sent by the user layer does not belong to the first link.
9. The system of claim 8, wherein the first link determination submodule includes an information item acquisition unit, a first determination unit, and a second determination unit, wherein:
the information item obtaining sub-module is used for disassembling the data packet sent by the user layer to obtain an information item;
the first determining unit is configured to determine that the data packet sent by the user layer does not belong to the first link if the information entry exists in the information mapping table;
and the second judging unit is used for determining that the data packet sent by the user layer belongs to the first link if the information item does not exist in the information mapping table.
10. A vehicle, characterized by comprising:
a vehicle body;
a data transmission system comprising a memory, one or more processors, one or more applications, wherein the one or more applications are stored in the memory, the one or more applications being configured to, when invoked by the one or more processors, cause the one or more processors to perform the data transmission method of any of claims 1-4.
11. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a program code configured to, when called by a processor, cause the processor to perform the data transmission method according to any of claims 1-4.
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