CN114710529A - 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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- 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 and 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; performing protocol learning according to a data packet sent by a user layer and a network packet fed back by a protocol stack transmission module to obtain a protocol learning result; and packaging the data packet based on the protocol learning result, and sending the network packet obtained after the packaging processing to the 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 data transmission device, a data transmission system, a vehicle and a storage medium.
Background
With the continuous development of economy, the automobile revolution speed has already entered the high-speed track, and people are more and more to the automobile electronic requirement, and the car connection mobile internet is one of them essential function. Meanwhile, the demand for automobile entertainment is gradually increasing, and the demand for bandwidth is higher and higher. In addition, new technologies such as automatic driving function and video have high requirements for bandwidth. However, the 4G bandwidth on Tbox is obviously not able to meet the above requirements, and 5GTbox is gradually becoming a new requirement.
For the 5GTbox processor, a single-core or multi-core low-performance scheme is mostly selected, so that the 5GTbox can only reach below 40% of the maximum value, and cannot reach the ideal bandwidth speed, and the speed increase of the 5GTbox is a problem to be solved urgently.
Disclosure of Invention
Embodiments of the present application provide a data transmission method, apparatus, system, vehicle, and storage medium to solve the above 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; performing protocol learning according to a data packet sent by a user layer and a network packet fed back by a protocol stack transmission module to obtain a protocol learning result; and performing packaging processing on the data packet based on the protocol learning result, and sending the network packet obtained after the packaging processing to the physical layer.
In a second 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 protocol learning result of a hardware acceleration module, wherein the protocol learning result is obtained by the hardware acceleration module 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 a protocol learning result; if the data packet belongs to the first link, selecting to transmit data through a protocol stack transmission module; and if the data packet does not belong to the first link, selecting to transmit data through the hardware acceleration module.
In a third aspect, an embodiment of the present application provides a data transmission apparatus. The device comprises an acquisition module, a learning module and a sending module. The acquisition module is used for acquiring a data packet sent by a user layer and a 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 to obtain a protocol learning result. And the sending module is used for performing packaging processing on the data packet based on the protocol learning result and sending the network packet obtained after the packaging processing to the physical layer.
In a fourth aspect, an embodiment of the present application provides a data transmission apparatus. The device comprises an acquisition module, a judgment 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. And 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 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 data through the hardware acceleration module if the data packet does not belong to the first link.
In a fifth aspect, an embodiment of the present application provides 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 a user layer, and selecting to transmit 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 a data packet sent by the user layer and a network packet fed back by the protocol stack transmission module if data transmission is carried out through the protocol stack transmission module, so as to obtain a protocol learning result; or performing packet packing processing on the data packet based on the protocol learning result, and sending the network packet obtained after the packet packing processing to the 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, an embodiment of the present application provides a computer-readable storage medium. The computer readable storage medium has stored therein program code configured to, when invoked by a processor, perform the data transmission method provided by the embodiments of the present application.
The embodiment of the application provides a data transmission method and 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; performing protocol learning according to a data packet sent by a user layer and a network packet fed back by a protocol stack transmission module to obtain a protocol learning result; and performing packet packing processing on the data packet based on the protocol learning result, and sending the network packet obtained after the packet packing processing to the physical layer, so that data transmission can be performed through an added hardware acceleration module, software processing flows such as routing and protocol conversion of a protocol stack are skipped, and the processing flow of the data packet is simplified. Compared with software for data processing and transmission, the data transmission is carried out through the hardware acceleration module, so that the processing speed of the protocol packet can be effectively increased, the data transmission time can be saved, the waste of bandwidth can be reduced, and the 5G requirement is met.
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In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
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 according to an exemplary embodiment of the present application;
fig. 3 is a block diagram of a network system after the data transmission system provided by the embodiment of the present application is adopted according to an exemplary embodiment of the present application;
fig. 4 is a schematic flowchart of a data transmission method according to an embodiment of the present application;
fig. 5 is a schematic flowchart of a data transmission method according to another embodiment of the present application;
fig. 6 is a schematic flowchart 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 diagram illustrating a hardware acceleration module performing protocol learning according to an exemplary embodiment of the present application;
FIG. 9 is a diagram illustrating data transmission via a hardware acceleration module according to an exemplary embodiment of the present application;
FIG. 10 is a diagram illustrating a hardware acceleration module for performing packet packing on data packets according to an exemplary embodiment of the present application;
fig. 11 is a block diagram of a data transmission apparatus 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 according to 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 disclosure.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
In the current 5G box, the 5G network is a high-speed interface, and a high-performance processor scheme is required to maximize performance. However, for Tbox, there is no other high performance interface requirement, and it is not possible to select a high performance processing scheme for only one 5G network interface, which results in wasted performance, and thus a processor scheme with reduced performance clipping can be selected.
Since there is currently no high bandwidth demand on vehicle traffic for a while, no speed issue is addressed by the current 5 GTbox. In addition, the 5GTbox does not select a multi-core high-performance processor scheme, which involves limitations of multiple reasons such as power consumption, because a basic requirement of the mobile network is as follows: the automobile is kept online all the time, a high-performance chip is selected, and the automobile must be shut down when flameout. For another reason, it is not cost prohibitive.
Currently, the 5GTbox selects the protocol stack of the operating system to send data, and the data transmission mode through the protocol stack will be processed by the protocol stack conversion, routing and the like, which increases the processing time.
For a general network, such as a Transmission Control Protocol (TCP) and a User Datagram Protocol (UDP), after data is transmitted, elements of a Protocol stack report are basically unchanged, such as Internet Protocol (IP) data, Media Access Control (MAC) data, and sequence number increase. Therefore, if the protocol stack processing procedures such as routing, Network Address Translation (NAT), etc. are skipped and the packet transmission and reception are performed by hardware, the time can be saved and the speed can be increased.
Referring to fig. 1, fig. 1 is a block diagram of a data transmission system provided in the embodiment of the present application, and is also a schematic diagram of an application scenario of a data transmission method provided in the embodiment of the present application. The data transmission system 10 includes a path selection module 11, a hardware acceleration module 12, and a protocol stack transmission module 13 connected to each other. The path selection module 11 and the protocol stack transmission module 13 may be provided in a protocol stack. The hardware acceleration module 12 is a hardware module that is independent from the protocol stack.
The path selection module 11 is configured to obtain a data packet sent by the user layer, and select to transmit data through the hardware acceleration module 12 or the protocol stack transmission module 13 according to whether the data packet belongs to the first link. If the data packet belongs to the first link, the protocol stack transmission module 13 is selected to transmit data, and 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 hardware acceleration module 12 is selected to transmit data, and 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 for data transmission, the protocol stack transmission module 13 is configured to encapsulate a data packet sent by the user layer to 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 perform data transmission through the hardware acceleration module 12, the hardware acceleration module 12 may perform packet processing on a data packet sent by the user layer based on the protocol learning result, and send a network packet obtained after the packet processing to the physical layer.
In some embodiments, the hardware acceleration module 12 includes a packet unpacking sub-module and a protocol learning sub-module. The data packet disassembling 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 item of the data packet and an information item of the network packet fed back by the protocol stack transmission module 13. The protocol learning submodule is used for establishing an information mapping table according to the information items of the data packet and the information items of the network packet fed back by the protocol stack transmission module 13, wherein the information mapping table is a protocol learning result.
In some embodiments, the protocol learning sub-module includes a sequence number assignment 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 packets, establishing an information mapping table based on the connection sequence numbers, and enabling each connection sequence number to correspond to one information mapping table. The information inserting unit is configured to insert the information entry of the data packet and the 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 times determination sub-module, and a learning stop sub-module. The protocol acquisition submodule is used for acquiring a transmission protocol from the data packet. And the frequency judgment submodule is used for continuing to carry out protocol learning if the frequency of the protocol learning is less than the frequency of handshaking required for establishing one-time connection of the transmission protocol. The learning stopping submodule is used for stopping the protocol learning if the number of times of the protocol learning is equal to the number of times of handshaking required for establishing one connection of the transmission protocol, and obtaining a protocol learning result.
In some embodiments, the path selection module 11 includes a first-time link decision sub-module, a first transmission path selection sub-module, and a second transmission path selection sub-module. And the first-time link judging submodule is used for determining whether the data packet belongs to the first-time link according to the data packet and the protocol learning result. The first transmission path selection sub-module is configured to select to transmit data through the protocol stack transmission module 13 if the data packet belongs to the first link. The second transmission path selection sub-module is used for selecting data transmission through the hardware acceleration module 12 if the data packet does not belong to the first link.
In some embodiments, the first-time link determination submodule includes an information item acquisition unit, a first determination unit, and a second determination unit. The information item acquisition submodule is used for disassembling the data packet to obtain information items. The first judging unit is used for determining that the data packet does not belong to the first link if the protocol learning result has the information item. The second judgment 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 disclosure. As shown in fig. 2, the standard network system includes three parts, namely, a user layer, a protocol stack and a device physical layer, wherein the protocol stack includes a transport layer, a network layer and a data link layer. And the user layer sends the data packet to the protocol stack through system call of the socket interface. The protocol stack receives the data packet through the transmission layer, software processing such as routing table traversal and IPtable traversal is carried out on the data packet through the network layer to obtain a complete network packet, the network packet is forwarded to the data link layer, and the data link layer sends the network packet to the equipment physical layer, so that data transmission is carried out. The software processing such as the routing table traversal and the Iptable table traversal is processed in a kernel thread or soft interrupt mode, the processing efficiency is not high, the requirement of a 4G network can be met, and the average bandwidth requirement of a 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 the embodiment of the present application is adopted according to an exemplary embodiment of the present application. In some embodiments, the data packet may be transmitted to the hardware acceleration module through a user layer and a transport layer. In other embodiments, the data packet may also be transmitted to the hardware acceleration module through a user layer, a transport layer, and a network layer. The network system shown in fig. 3 skips the protocol processing procedures such as routing, protocol conversion, firewall and the like in the protocol stack, and can directly perform packet processing on the data packet by the hardware acceleration module.
That is, the data transmission system 10 provided in the embodiment of the present application adds the hardware acceleration module, processes and transmits data through the hardware acceleration module when the data packet does not belong to the first link, and compared with the software processing flow of the protocol stack, the data processing and transmission speed can be greatly increased, so that not only is the data transmission time saved, but also the requirement of 5G on the broadband can be satisfied, the bandwidth waste is reduced, and the mobile internet era of high-speed development is followed.
Referring to fig. 4, fig. 4 is a schematic flowchart illustrating a data transmission method according to an embodiment of the present disclosure. The data transmission method may be applied to the data transmission system 10 described above, 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, obtain the data packet sent by the user layer and the network packet fed back by the protocol stack transmission module.
The network packet fed back by the protocol stack transmission module is a data packet obtained by software processing of the protocol stack on the data packet, such as routing table traversal, Iptable table traversal and the like.
In some embodiments, the user layer sends a packet to a routing module in the protocol stack, and the routing module determines that the packet does not belong to the first link and may send the packet to the hardware acceleration module.
And step S120, 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 to obtain a protocol learning result.
The protocol learning may be analyzing information items of the data packet and the network packet, and supplementing the information items to an information mapping table in the hardware acceleration module. The information entry may include information such as an IP source address, a destination IP address, an MAC source address, a destination MAC address, a packet sequence number, and a version. The information mapping table may be pre-established in a cache region of the hardware acceleration module, or may be established in a protocol learning process, and the embodiment of the present application is not specifically limited herein. The information mapping table may be a protocol learning result.
In some embodiments, the transport protocol may be derived from the data packet. If the number of times of protocol learning is less than the number of times of handshaking required for establishing one connection of the transmission protocol, the protocol learning is continued. And if the number of times of protocol learning is equal to the number of times of handshaking required for establishing one connection of the transmission protocol, stopping the protocol learning and obtaining a protocol learning result. The number of handshakes required for establishing a connection by a transport protocol depends on the transport protocol, and for example, the number of handshakes required for establishing a connection by a TCP protocol is 3. When the number of times of protocol learning is equal to the number of times of handshaking required for establishing one connection of the transmission protocol, the 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 the subsequent data processing and transmission errors caused by the inaccurate protocol learning result are avoided.
Step S130, performing packet packing processing on the data packet based on the protocol learning result, and sending the network packet obtained after the packet packing processing to the physical layer.
The packaging processing means supplementing the data packet based on the protocol learning result, that is, the information mapping table. Specifically, the packet packing process may be padding a protocol header of the data packet, padding an IP header according to the IP mapping table, padding an MAC address according to the MAC mapping table, padding a timestamp, a sequence number, a protocol subclass, and the like of the transport layer protocol. The IP mapping table and the MAC mapping table both belong to an information mapping table.
In the data transmission method provided in the embodiment of the present application, data transmission is performed through the hardware acceleration module, and software processing flows such as routing and protocol conversion of a protocol stack are skipped, so that a processing flow of a data packet is simplified. Compared with software for data processing and transmission, the data transmission is carried out through the hardware acceleration module, so that the processing speed of the protocol packet can be effectively increased, the data transmission time can be saved, the waste of bandwidth can be reduced, and the 5G requirement is met. When the number of times of protocol learning is equal to the number of times of handshaking required for establishing one connection of the transmission protocol, the 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 the subsequent data processing and transmission errors caused by the inaccurate protocol learning result are avoided.
Referring to fig. 5, fig. 5 is a schematic flowchart illustrating a data transmission method according to another embodiment of the present application. The data transmission method may be applied to the data transmission system 10 described above, 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 the user layer and a network packet fed back by the protocol stack transmission module are obtained.
For detailed description of step S210, please refer to step S110, which is not described herein again.
Step S220, the data packet and the network packet fed back by the protocol stack transmission module are disassembled respectively to obtain the information entry of the data packet and the information entry of the network packet fed back by the protocol stack transmission module.
As mentioned above, the information entry includes information such as IP source address, destination IP address, MAC source address, destination MAC address, packet sequence number, version, etc. The information items contained in the network packets fed back by the protocol stack transmission module are more than the information items contained in the data packets.
Step S230, establishing 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.
In some embodiments, the implementation of step S230 may be as follows: connection sequence numbers can be distributed according to information items of the data packets, information mapping tables are established based on the connection sequence numbers, and each connection sequence number corresponds to one information mapping table; and 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. The connection sequence number may be specifically allocated according to entry information such as a source IP, a destination IP, a source MAC, a destination MAC, a port, and the like, and specifically allocated according to which entry information or which entry information, which is not specifically limited herein in this embodiment of the present application.
Please refer to step S120 for parts of steps S220 to S230 not described in detail.
Step S240, performing packet packaging processing on the data packet based on the information mapping table, and sending the network packet obtained after the packet packaging processing to the physical layer.
For detailed description of step S240, please refer to step S130, which is not described herein again.
In the data transmission method provided in the embodiment of the present application, data transmission is performed through the hardware acceleration module, and software processing flows such as routing and protocol conversion of a protocol stack are skipped, so that a processing flow of a data packet is simplified. Compared with software for data processing and transmission, the data transmission is carried out through the hardware acceleration module, so that the processing speed of the protocol packet can be effectively increased, the data transmission time can be saved, the waste of bandwidth can be reduced, and the 5G requirement is met.
Referring to fig. 6, fig. 6 is a schematic flowchart illustrating a data transmission method according to another embodiment of the present application. The data transmission method may be applied to the data transmission system 10 described above, 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, acquiring the data packet sent by the user layer and the protocol learning result of the hardware acceleration module.
And the protocol learning result is obtained by the hardware acceleration module 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 packets may be disassembled to obtain the information items. If the protocol learning result has information items, it is determined that the data packet does not belong to the first link, and step S340 is executed. 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 performed. The information entry obtained by disassembling the data packet may include one or more of the above-mentioned IP source address, destination IP address, MAC source address, destination MAC address, sequence number, version, and the like, and what the specific information entry information is may be determined according to actual requirements, which is not specifically limited herein in this embodiment of the application. For example, taking an information item as a source IP address, taking the source IP address obtained by disassembling a data packet as a, if the source IP address which is a exists in a protocol learning result (i.e., an information mapping table), it is determined that the data packet does not belong to the first link; otherwise, the data packet is determined to belong to the first link.
And step S330, selecting a protocol stack transmission module to transmit data.
Step S340, selecting to perform data transmission 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 perform data transmission 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 performs 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, so that 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, so that data transmission can be performed through the hardware acceleration module, a software processing flow of the protocol stack is skipped, time can be effectively saved, and data transmission speed is increased.
Fig. 7 to fig. 10 are diagrams illustrating data transmission performed by a protocol stack transmission module according to an exemplary embodiment of the present application, fig. 8 is a diagram illustrating a hardware acceleration module performing protocol learning according to an exemplary embodiment of the present application, fig. 9 is a diagram illustrating data transmission performed by a hardware acceleration module according to an exemplary embodiment of the present application, and fig. 10 is a diagram illustrating a packet packing process performed 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 data of the first link, the link needs to be established first. Establishing a link involves finding a route, and finally sending out a data packet from a hardware physical layer through processing procedures such as protocol conversion, a firewall and the like. As shown in fig. 7, when the data is the data linked for the first time, the data packet is sent to the protocol stack, so that the protocol stack is linked with the user layer, the protocol stack transmission module performs a series of processing on the data packet, such as routing table traversal, Iptable table traversal, and the like, to generate a complete network packet, and sends the datagram 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 to generate a protocol learning result, and data transmission can be performed based on the protocol learning result when subsequent data is not data linked for the first time.
As shown in fig. 8, the protocol learning may be analyzing information entries in the data packet and the network packet and caching the information entries in an information mapping table, wherein the information entries may be 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. Specifically, connection sequence numbers may be allocated according to information items, such as IP addresses and ports, each connection sequence number corresponds to one information mapping table, and then, the information mapping table is filled with corresponding information items. After protocol learning of the times of handshaking is needed when one-time connection is established with the transmission protocol, the protocol learning is stopped, and at the moment, the hardware acceleration module can transmit data 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 connection.
As shown in fig. 9, if the data input by the user layer or the Forward function is not the data linked for the first time, the data packet may be transmitted through the hardware acceleration module, and at this time, the input and the output of the protocol stack may be selectively disconnected, or the input and the output of the protocol stack may be selectively disconnected but the data packet is not input to the protocol stack.
If the hardware acceleration module receives a data packet which is not linked for the first time, the hardware acceleration module can be matched with the information item corresponding to the connection, and reads information such as IP (Internet protocol), MAC (media access control) and the like from the information item to perform packet processing on the data packet. Specifically, as shown in fig. 10, the packet is packaged by filling a protocol header of a packet input by a user layer or a Forward function based on an information mapping table in a hardware acceleration module, for example, filling an IP header according to an IP mapping table, filling a MAC address according to an MAC mapping table, filling a timestamp, a sequence number, a protocol subclass, and the like of a transport layer protocol. After the above-mentioned series of padding 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 should be understood by those skilled in the art that the case of receiving data is similar to the case of transmitting data, and the only difference is 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 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 apparatus 400 includes an obtaining module 410, a learning module 420, and a sending module 430. The acquisition module is used for acquiring a data packet sent by a user layer and a 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 to obtain a protocol learning result. And the sending module is used for performing packaging processing on the data packet based on the protocol learning result and sending the network packet obtained after the packaging processing to the physical layer.
In some embodiments, the learning module 420 includes a disassembly sub-module and a learning sub-module. The disassembling submodule 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 submodule is used for establishing an information mapping table according to the information items of the data packet and the information items 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 allocation unit and an insertion unit. The distribution unit is used for distributing connection sequence numbers according to information items of the data packets, establishing an information mapping table based on the connection sequence numbers, and enabling each connection sequence number to correspond 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, the learning module 420 also includes an acquisition sub-module and a stop sub-module. The obtaining submodule is used for obtaining the transmission protocol from the data packet. The learning submodule is further used for continuing to learn the protocol if the number of times of protocol learning is smaller than the number of times of handshaking required for establishing one connection of the transmission protocol. The stopping submodule is used for stopping the protocol learning if the times of the protocol learning are equal to the times of handshaking required by establishing one connection of the transmission protocol, 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 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 apparatus 500 includes an obtaining module 510, a determining module 520, a first transmitting module 530, and a second transmitting 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 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 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 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 decommissioning sub-module, a first determination sub-module, and a second determination sub-module. The disassembling submodule is used for disassembling the data packet to obtain information items. The first judgment submodule is used for determining that the data packet does not belong to the first link if the protocol learning result has information items. And the second judgment submodule is used for determining that the data packet belongs to the first link if no information item exists in the protocol learning result.
It is clear to those skilled in the art that the data transmission device 400 provided in the embodiment of the present application can perform the steps S110 to S130 and the steps S210 to S240, and the data transmission device 500 can perform the steps S310 to S340. The specific working processes of the above devices and modules may refer to the processes corresponding to the data transmission method in the embodiments of the present application, and are not described herein again.
In the embodiments provided in this application, the coupling, direct coupling, or communication connection between the modules shown or discussed may be indirect coupling or communication coupling through some interfaces, devices, or modules, and may be electrical, mechanical, or other forms, which are not limited in this application.
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 module may be implemented in a form of hardware, or may be implemented in a form of a functional module of software, which is not limited in this application.
Referring to fig. 13, fig. 13 is a structural block diagram of a vehicle according to an embodiment of the present application. The vehicle 600 includes a body 610 and a data transfer 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 cause the one or more processors 622 to execute the above-mentioned data transmission method provided by the embodiments of the present application when being called by the one or more processors 622.
The Memory 621 may include a Random Access Memory (RAM) or a Read-Only Memory (ROM). The memory 621 may be used to store an instruction, a program, code, a set of codes, or a set of instructions. The memory 621 may include a program storage area and a data storage area. Wherein the stored 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 created in use by the data transfer system 620, and the like.
Referring to fig. 14, fig. 14 is a block diagram of a computer readable storage medium according to an embodiment of the present disclosure. The computer readable storage medium 700 has stored therein a program code 710, where the program code 710 is configured to, when called by a processor, cause the processor to execute the above-mentioned 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 (EPROM), a hard disk, or a ROM. Optionally, the Computer-Readable Storage Medium 700 includes a Non-volatile Computer-Readable Medium (Non-Transitory Computer-Readable Storage Medium, Non-TCRSM). The computer readable storage medium 700 has storage space for program code 710 for performing any of the method steps of the method described above. The program code 710 can be read from or written to one or more computer program products. The program code 710 may be compressed in a suitable form.
In summary, the embodiments of the present application provide a data transmission method, an apparatus, an electronic device, 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; performing protocol learning according to a data packet sent by a user layer and a network packet fed back by a protocol stack transmission module to obtain a protocol learning result; and performing packet packing processing on the data packet based on the protocol learning result, and sending the network packet obtained after the packet packing processing to the physical layer, so that data transmission can be performed through an added hardware acceleration module, software processing flows such as routing and protocol conversion of a protocol stack are skipped, and the processing flow of the data packet is simplified. Compared with software for data processing and transmission, the data transmission is carried out through the hardware acceleration module, so that the processing speed of the protocol packet can be effectively increased, the data transmission time can be saved, the waste of bandwidth can be reduced, and the 5G requirement is met.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same. Although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (15)
1. A method of data transmission, comprising:
acquiring a data packet sent by a user layer and a network packet fed back by a protocol stack transmission 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 to obtain a protocol learning result;
and performing packaging processing on the data packet based on the protocol learning result, and sending the network packet obtained after the packaging processing to a physical layer.
2. The method according to claim 1, wherein the 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 to obtain a protocol learning result comprises:
respectively disassembling the data packet and the network packet fed back by the protocol stack transmission module to obtain an information item of the data packet and an information item of the network packet fed back by the protocol stack transmission module;
and establishing an information mapping table according to the information items of the data packet and the information items of the network packet fed back by the protocol stack transmission module, wherein the information mapping table is the protocol learning result.
3. The method according to claim 2, wherein said establishing 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 includes:
distributing connection sequence numbers according to the information items of the data packets, and establishing the information mapping tables based on the connection sequence numbers, wherein each connection sequence number corresponds to one information mapping table;
and 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.
4. The method according to any one of claims 1 to 3, wherein the 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 to obtain a protocol learning result further comprises:
acquiring a transmission protocol from the data packet;
if the number of times of protocol learning is less than the number of times of handshaking required for establishing one connection of the transmission protocol, continuing to perform the protocol learning;
and if the number of times of protocol learning is equal to the number of times of handshaking required for establishing one connection of the transmission protocol, stopping the protocol learning and obtaining the protocol learning result.
5. A method of data transmission, comprising:
acquiring 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 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 a first link according to the data packet and the protocol learning result;
if the data packet belongs to the first link, selecting to transmit data through the protocol stack transmission module;
and if the data packet does not belong to the first link, selecting to transmit data through the hardware acceleration module.
6. The method of claim 5, wherein determining whether the packet belongs to a first link according to the packet and the protocol learning result comprises:
disassembling the data packet to obtain information items;
if the information item exists in the protocol learning result, determining that the data packet does not belong to the first link;
and if the information item does not exist in the protocol learning result, determining that the data packet belongs to the first link.
7. A data transmission apparatus, comprising:
the acquisition module is used for acquiring a data packet sent by a user layer and a 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 to obtain a protocol learning result;
and the sending module is used for performing packaging processing on the data packet based on the protocol learning result and sending the network packet obtained after the packaging processing to the physical layer.
8. A data transmission system, comprising:
the path selection module is used for acquiring a data packet sent by a user layer and selecting to transmit data through a hardware acceleration module or a protocol stack transmission module according to whether the data packet belongs to a first link;
the hardware acceleration module is used for 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 to obtain a protocol learning result if data transmission is performed through the protocol stack transmission module; or the data packet is packaged based on the protocol learning result, and the network packet obtained after packaging is sent to a physical layer;
the protocol stack transmission module is configured to encapsulate the data packet sent by the user layer to obtain a network packet of the protocol stack transmission module, and send the network packet of the protocol stack transmission module to the hardware acceleration module and the physical layer, respectively.
9. The system of claim 8, wherein the hardware acceleration module comprises a packet unpacking sub-module and a protocol learning sub-module, wherein:
the data packet disassembling submodule is used for respectively disassembling the data packet and the network packet fed back by the protocol stack transmission module to obtain an information item of the data packet and an information item of the network packet fed back by the protocol stack transmission module;
and the protocol learning submodule is used for establishing an information mapping table according to the information items of the data packet and the information items of the network packet fed back by the protocol stack transmission module, wherein the information mapping table is the protocol learning result.
10. The system of claim 9, wherein the protocol learning submodule comprises a sequence number assignment unit and an information insertion unit, wherein:
the sequence number distribution unit is used for distributing connection sequence numbers according to information items of the data packets, establishing the information mapping tables based on the connection sequence numbers, and enabling each connection sequence number to correspond to one information mapping table;
the information inserting unit is configured to insert the information entry of the data packet and the information entry of the network packet fed back by the protocol stack transmission module into the information mapping table.
11. The system according to any one of claims 8 to 10, 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 submodule is used for acquiring a transmission protocol from the data packet;
the number of times judging submodule is used for continuing to carry out the protocol learning if the number of times of the protocol learning is smaller than the number of times of handshaking required for establishing one-time connection of the transmission protocol;
and the learning stopping submodule is used for stopping the protocol learning to obtain the protocol learning result if the number of times of the protocol learning is equal to the number of times of handshaking required for establishing one-time connection of the transmission protocol.
12. The system of claim 8, wherein the path selection module comprises a first link decision sub-module, a first transmission path selection sub-module, and a second transmission path selection sub-module, wherein:
the first link judging submodule is used for determining whether the data packet belongs to a first link according to the data packet and the protocol learning result;
the first transmission path selection submodule is used for selecting to transmit data through the protocol stack transmission module if the data packet belongs to the first link;
and the second transmission path selection submodule is used for selecting to transmit data through the hardware acceleration module if the data packet does not belong to the first link.
13. The system according to claim 12, wherein the first-time link decision submodule includes an information item acquisition unit, a first decision unit, and a second decision unit, wherein:
the information item acquisition submodule 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 the information item exists in the protocol learning result;
the second determining unit is configured to determine that the data packet belongs to a first link if the information entry does not exist in the protocol learning result.
14. 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, when invoked by the one or more processors, are configured to cause the one or more processors to perform a data transmission method as claimed in any one of claims 1 to 6.
15. A computer-readable storage medium, wherein a program code is stored, the program code being configured to cause a processor to execute the data transmission method according to any one of claims 1 to 6 when called by the processor.
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