CN112492064A - Multi-network-port MAC address allocation method and terminal for embedded equipment - Google Patents
Multi-network-port MAC address allocation method and terminal for embedded equipment Download PDFInfo
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- 238000005192 partition Methods 0.000 claims description 43
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/50—Address allocation
- H04L61/5046—Resolving address allocation conflicts; Testing of addresses
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4411—Configuring for operating with peripheral devices; Loading of device drivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2101/00—Indexing scheme associated with group H04L61/00
- H04L2101/60—Types of network addresses
- H04L2101/618—Details of network addresses
- H04L2101/622—Layer-2 addresses, e.g. medium access control [MAC] addresses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
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Abstract
The invention discloses a multi-network port MAC address allocation method and a terminal of embedded equipment; the method starts a boot loader of the embedded system, reads a pre-stored MAC address, and writes the MAC address into a dtb file; starting a kernel, when dsa drivers are loaded, acquiring MAC addresses in the dtb files as MAC base addresses, performing preset processing on the MAC base addresses to obtain continuous and different network port MAC addresses with the same number as the network ports, writing each network port MAC address into a structure body of the corresponding network port, and initializing the network ports; starting a file system; the MAC base address is transmitted into the kernel through the bootstrap loader of the embedded system, and the kernel processes the base address, so that the MAC addresses distributed to the network ports are different, address distribution is carried out on the network ports in the kernel state, subsequent network port initialization is carried out, the network ports are ensured to be in a normal state, and service processing can be carried out normally.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a multi-network-port MAC address allocation method and a terminal for embedded equipment.
Background
In a VPN (Virtual Private Network), a Network security device, etc., a lot of Network ports are supported, because the CPU resources are limited, a switch chip (switch chip) is used to expand the number of the Network ports, and because the switch chip uses a dsa driver (a driving framework that materializes each interface of the switch chip) to change the Network ports of the switch chip into Network ports of independent entities, but in this process, MAC addresses (Media Access Control addresses, also called local area Network addresses, ethernet addresses, and physical addresses) of all the Network ports are all the same as the MAC addresses of the uplink ports, which do not meet the product requirements, and if a user mode program is used to manually set the MAC addresses to each Network port, there may be individual service anomalies.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a method and a terminal for distributing multi-network-port MAC addresses of embedded equipment are provided, so that the multi-network-port MAC addresses of the embedded equipment are different, and meanwhile, stable service is ensured.
In order to solve the technical problems, the invention adopts the technical scheme that:
a multi-network port MAC address allocation method of embedded equipment comprises the following steps:
s1, starting a boot loader of the embedded system, reading a pre-stored MAC address, and writing the MAC address into a dtb file;
s2, starting a kernel, acquiring the MAC address in the dtb file as an MAC base address when dsa drive is loaded, presetting the MAC base address to obtain continuous and different network port MAC addresses with the same number as the network ports, writing each network port MAC address into a structure body of the corresponding network port respectively, and initializing the network ports;
and S3, starting the file system.
In order to solve the technical problem, the invention adopts another technical scheme as follows:
an embedded device multi-port MAC address allocation terminal comprises a processor, a memory and a computer program which is stored on the memory and can run on the processor, wherein the processor executes the computer program to realize the following steps:
s1, starting a boot loader of the embedded system, reading a pre-stored MAC address, and writing the MAC address into a dtb file;
s2, starting a kernel, acquiring the MAC address in the dtb file as an MAC base address when dsa drive is loaded, presetting the MAC base address to obtain continuous and different network port MAC addresses with the same number as the network ports, writing each network port MAC address into a structure body of the corresponding network port respectively, and initializing the network ports;
and S3, starting the file system.
The invention has the beneficial effects that: the MAC base address is transmitted into the kernel through the boot loader of the embedded system, the kernel processes the base address, the MAC addresses allocated to the network ports are ensured to be different, and the MAC addresses are written into the structural bodies of the network ports in the kernel, namely, the addresses are allocated to the network ports in the kernel mode to carry out subsequent network port initialization, so that the network ports are ensured to be in a normal state, and service processing can be normally carried out.
Drawings
Fig. 1 is a flowchart of an embedded device multi-port MAC address allocation method according to an embodiment of the present invention;
fig. 2 is a structural diagram of an embedded device multi-port MAC address allocation terminal according to an embodiment of the present invention;
fig. 3 is a detailed flowchart of a method for allocating MAC addresses of multiple network ports of an embedded device according to an embodiment of the present invention;
fig. 4 is a diagram illustrating a result of a step of a method for allocating a multi-port MAC address of an embedded device according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating an operation result of a method for allocating a multi-port MAC address of an embedded device according to an embodiment of the present invention;
description of reference numerals:
1. a multi-network port MAC address distribution terminal of embedded equipment; 2. a processor; 3. a memory.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 and fig. 3, a method for allocating a multi-port MAC address of an embedded device includes:
s1, starting a boot loader of the embedded system, reading a pre-stored MAC address, and writing the MAC address into a dtb file;
s2, starting a kernel, acquiring the MAC address in the dtb file as an MAC base address when dsa drive is loaded, presetting the MAC base address to obtain continuous and different network port MAC addresses with the same number as the network ports, writing each network port MAC address into a structure body of the corresponding network port respectively, and initializing the network ports;
and S3, starting the file system.
From the above description, the beneficial effects of the present invention are: the MAC base address is transmitted into the kernel through the boot loader of the embedded system, the kernel processes the base address, the MAC addresses allocated to the network ports are ensured to be different, and the MAC addresses are written into the structural bodies of the network ports in the kernel, namely, the addresses are allocated to the network ports in the kernel mode to carry out subsequent network port initialization, so that the network ports are ensured to be in a normal state, and service processing can be normally carried out.
Further, step S1 is preceded by:
and S01, acquiring the MAC address of the current equipment network card, and storing the environment variable written into the boot1 partition.
As can be seen from the above description, since the MAC address is stored in a location that is not easy to be operated and lost by the user, and is easy to be read, the MAC address is stored in the boot1 partition, because the boot loader of the embedded system uses the boot0 partition, and an environment variable tool for reading the boot in a user state is also provided below the boot loader source code of the embedded system, which facilitates accurate writing, and writes the MAC address into the environment variable of the boot1 partition as an optimal location.
Further, the step S1 is specifically:
s11, starting a boot loader of the embedded system, respectively reading a first MAC address of a boot1 partition and a second MAC address of the boot0 partition, comparing whether the first MAC address and the second MAC address are the same, if not, overwriting the first MAC address of the boot1 partition as the second MAC address into an environment variable of the boot0 partition, and entering S12, otherwise, directly entering S12;
s12, when the boot loader analyzes the dtb file, writing the second MAC address in the boot0 partition into the dtb file.
From the above description, before writing the second MAC address in the boot0 partition into the dtb file, the present invention needs to compare the second MAC address with the MAC address in the boot1, so as to ensure that the second MAC address in the boot0 is real-time and correct.
Further, the step S2 of presetting the MAC base address specifically includes:
and self-adding the MAC base address.
The above description shows that the present invention performs self-addition on the MAC addresses, and the operation is simple, so that continuous and different MAC addresses can be allocated as fast as possible.
Further, in the step S1, the boot loader for starting the embedded system is uboot.
As can be seen from the above description, the bootloader for starting the embedded system is uboot as a specific embodiment of the present invention.
Referring to fig. 2, an embedded device multi-port MAC address assignment terminal includes a processor, a memory, and a computer program stored in the memory and running on the processor, where the processor executes the computer program to implement the following steps:
s1, starting a boot loader of the embedded system, reading a pre-stored MAC address, and writing the MAC address into a dtb file;
s2, starting a kernel, acquiring the MAC address in the dtb file as an MAC base address when dsa drive is loaded, presetting the MAC base address to obtain continuous and different network port MAC addresses with the same number as the network ports, writing each network port MAC address into a structure body of the corresponding network port respectively, and initializing the network ports;
and S3, starting the file system.
From the above description, the beneficial effects of the present invention are: the MAC base address is transmitted into the kernel through the boot loader of the embedded system, the kernel processes the base address, the MAC addresses allocated to the network ports are ensured to be different, and the MAC addresses are written into the structural bodies of the network ports in the kernel, namely, the addresses are allocated to the network ports in the kernel mode to carry out subsequent network port initialization, so that the network ports are ensured to be in a normal state, and service processing can be normally carried out.
Further, the processor before executing the step S1 when the computer program further includes:
and S01, acquiring the MAC address of the current equipment network card, and storing the environment variable written into the boot1 partition.
As can be seen from the above description, since the MAC address is stored in a location that is not easy to be operated and lost by the user, and is easy to be read, the MAC address is stored in the boot1 partition, because the boot loader of the embedded system uses the boot0 partition, and an environment variable tool for reading the boot in a user state is also provided below the boot loader source code of the embedded system, which facilitates accurate writing, and writes the MAC address into the environment variable of the boot1 partition as an optimal location.
Further, the step S1 is specifically:
s11, starting a boot loader of the embedded system, respectively reading a first MAC address of a boot1 partition and a second MAC address of the boot0 partition, comparing whether the first MAC address and the second MAC address are the same, if not, overwriting the first MAC address of the boot1 partition as the second MAC address into an environment variable of the boot0 partition, and entering S12, otherwise, directly entering S12;
s12, when the boot loader analyzes the dtb file, writing the second MAC address in the boot0 partition into the dtb file.
From the above description, before writing the second MAC address in the boot0 partition into the dtb file, the present invention needs to compare the second MAC address with the MAC address in the boot1, so as to ensure that the second MAC address in the boot0 is real-time and correct.
Further, the step S2 of presetting the MAC base address specifically includes:
and self-adding the MAC base address.
The above description shows that the present invention performs self-addition on the MAC addresses, and the operation is simple, so that continuous and different MAC addresses can be allocated as fast as possible.
Further, in the step S1, the boot loader for starting the embedded system is uboot.
As can be seen from the above description, the bootloader for starting the embedded system is uboot as a specific embodiment of the present invention.
Referring to fig. 1, fig. 3, fig. 4 and fig. 5, a first embodiment of the present invention is:
a multi-network port MAC address allocation method of embedded equipment comprises the following steps:
s01, obtaining the MAC address of the current equipment network card, and storing the environment variable written into the boot1 partition;
in this embodiment, since the MAC address is stored in a location that is not easy to operate and lose by a user, and is easy to read, the MAC address is stored in a boot1 partition, because the uboot uses a boot0 partition, an environment variable tool for reading the boot in a user state is also provided below the uboot source code, which facilitates accurate writing, and the MAC address is written into an environment variable of the boot1 partition, which is an optimal location.
S1, starting a boot loader of the embedded system, reading a pre-stored MAC address, and writing the MAC address into a dtb file;
the step S1 specifically includes:
s11, starting a boot loader of the embedded system, respectively reading a first MAC address of a boot1 partition and a second MAC address of the boot0 partition, comparing whether the first MAC address and the second MAC address are the same, if not, overwriting the first MAC address of the boot1 partition as the second MAC address into an environment variable of the boot0 partition, and entering S12, otherwise, directly entering S12;
s12, when the bootstrap loader analyzes the dtb file, writing a second MAC address in the boot0 partition into the dtb file;
the boot loader for starting the embedded system in the step S1 is uboot;
in this embodiment, as shown in fig. 4, uboot is automatically executed each time when booting, after reading the MAC address in the boot1, the MAC address in the boot0 is read, the two MAC addresses are compared, if the two MAC addresses are the same, the return is directly made, and if the two MAC addresses are different, the MAC address in the boot1 is overwritten and written into the boot0 environment variable, and at this time, the MAC address in the boot0 partition is the MAC address in the boot1 partition.
After the MAC address is written into the boot0 environment, when the uboot parses the dtb file, the MAC address needs to be set and written into the dtb file so as to be transmitted to the kernel, and generally, the MAC base address is written into an upper connection port position where a switch chip used by a device in the dtb file is connected with a cpu, and the dtb file is a device tree file.
S2, starting a kernel, acquiring the MAC address in the dtb file as an MAC base address when dsa drive is loaded, presetting the MAC base address to obtain continuous and different network port MAC addresses with the same number as the network ports, writing each network port MAC address into a structure body of the corresponding network port respectively, and initializing the network ports;
the step S2 of presetting the MAC base address specifically includes:
performing self-adding on the MAC base address;
and S3, starting the file system.
In this embodiment, when the kernel is started and loaded into the dsa driver, the kernel obtains the MAC address transmitted by the dtb file, and copies the MAC address to the corresponding socket when the driver instantiates each switch socket through the dsa driver. The final result after system start-up is shown in fig. 5.
Referring to fig. 2, the second embodiment of the present invention is:
an embedded device multi-port MAC address allocation terminal 1 comprises a processor 2, a memory 3 and a computer program stored on the memory 3 and capable of running on the processor 2, wherein the processor 2 realizes the steps in the first embodiment when executing the computer program.
In summary, according to the method and the terminal for distributing MAC addresses of multiple network ports of an embedded device provided by the present invention, the MAC base address is transmitted to the kernel through the bootstrap loader of the embedded system, and the kernel processes the base address, so that it is ensured that the MAC addresses distributed to the network ports are different, and the MAC addresses are written into the structure body of each network port in the kernel, that is, address distribution is performed on each network port in the kernel state to perform subsequent network port initialization, so that each network port is ensured to be in a normal state, and service processing can be performed normally; and the invention verifies the MAC address when reading in the MAC address, thereby ensuring the correctness of the MAC address.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (10)
1. A multi-network port MAC address allocation method of an embedded device is characterized by comprising the following steps:
s1, starting a boot loader of the embedded system, reading a pre-stored MAC address, and writing the MAC address into a dtb file;
s2, starting a kernel, acquiring the MAC address in the dtb file as an MAC base address when dsa drive is loaded, presetting the MAC base address to obtain continuous and different network port MAC addresses with the same number as the network ports, writing each network port MAC address into a structure body of the corresponding network port respectively, and initializing the network ports;
and S3, starting the file system.
2. The embedded device multi-port MAC address allocation method according to claim 1, wherein the step S1 is preceded by:
and S01, acquiring the MAC address of the current equipment network card, and storing the environment variable written into the boot1 partition.
3. The method according to claim 2, wherein the step S1 specifically includes:
s11, starting a boot loader of the embedded system, respectively reading a first MAC address of a boot1 partition and a second MAC address of the boot0 partition, comparing whether the first MAC address and the second MAC address are the same, if not, overwriting the first MAC address of the boot1 partition as the second MAC address into an environment variable of the boot0 partition, and entering S12, otherwise, directly entering S12;
s12, when the boot loader analyzes the dtb file, writing the second MAC address in the boot0 partition into the dtb file.
4. The method according to claim 1, wherein the step S2 of presetting the MAC base address specifically comprises:
and self-adding the MAC base address.
5. The method according to claim 1, wherein the boot loader for starting the embedded system in step S1 is uboot.
6. An embedded device multi-network port MAC address allocation terminal comprises a processor, a memory and a computer program which is stored on the memory and can run on the processor, and is characterized in that the processor executes the computer program to realize the following steps:
s1, starting a boot loader of the embedded system, reading a pre-stored MAC address, and writing the MAC address into a dtb file;
s2, starting a kernel, acquiring the MAC address in the dtb file as an MAC base address when dsa drive is loaded, presetting the MAC base address to obtain continuous and different network port MAC addresses with the same number as the network ports, writing each network port MAC address into a structure body of the corresponding network port respectively, and initializing the network ports;
and S3, starting the file system.
7. The embedded device multi-port MAC address assignment terminal of claim 6, wherein the processor executes the computer program and before step S1, further comprising:
and S01, acquiring the MAC address of the current equipment network card, and storing the environment variable written into the boot1 partition.
8. The embedded device multi-port MAC address assignment terminal of claim 7, wherein the step S1 specifically is:
s11, starting a boot loader of the embedded system, respectively reading a first MAC address of a boot1 partition and a second MAC address of the boot0 partition, comparing whether the first MAC address and the second MAC address are the same, if not, overwriting the first MAC address of the boot1 partition as the second MAC address into an environment variable of the boot0 partition, and entering S12, otherwise, directly entering S12;
s12, when the boot loader analyzes the dtb file, writing the second MAC address in the boot0 partition into the dtb file.
9. The embedded device multi-port MAC address allocation terminal of claim 6, wherein the step S2 of presetting the MAC base address specifically includes:
and self-adding the MAC base address.
10. The embedded device multi-port MAC address assignment terminal of claim 6, wherein the boot loader that starts the embedded system in step S1 is uboot.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310737362.8A CN116781671A (en) | 2020-12-10 | 2020-12-10 | Multi-network port initialization method and terminal for embedded equipment |
| CN202011451052.2A CN112492064B (en) | 2020-12-10 | 2020-12-10 | Multi-network-port MAC address allocation method of embedded equipment and terminal |
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| CN202011451052.2A CN112492064B (en) | 2020-12-10 | 2020-12-10 | Multi-network-port MAC address allocation method of embedded equipment and terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115314471A (en) * | 2022-08-08 | 2022-11-08 | 福州创实讯联信息技术有限公司 | MAC address allocation method and terminal |
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| CN1558640A (en) * | 2004-01-15 | 2004-12-29 | 中兴通讯股份有限公司 | A system and method for providing multiple network interfaces with MAC address on processor |
| US20100250717A1 (en) * | 2009-03-27 | 2010-09-30 | Nec Corporation | Server system, collective server apparatus, and mac address management method |
| CN103533090A (en) * | 2013-10-23 | 2014-01-22 | 中国科学院声学研究所 | Mapping method and device for simulating single physical network port into multiple logical network ports |
| CN109254932A (en) * | 2018-09-18 | 2019-01-22 | 北京无线电测量研究所 | Multi-netmouth driving method, device and storage medium |
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2020
- 2020-12-10 CN CN202011451052.2A patent/CN112492064B/en active Active
- 2020-12-10 CN CN202310737362.8A patent/CN116781671A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1558640A (en) * | 2004-01-15 | 2004-12-29 | 中兴通讯股份有限公司 | A system and method for providing multiple network interfaces with MAC address on processor |
| US20100250717A1 (en) * | 2009-03-27 | 2010-09-30 | Nec Corporation | Server system, collective server apparatus, and mac address management method |
| CN103533090A (en) * | 2013-10-23 | 2014-01-22 | 中国科学院声学研究所 | Mapping method and device for simulating single physical network port into multiple logical network ports |
| CN109254932A (en) * | 2018-09-18 | 2019-01-22 | 北京无线电测量研究所 | Multi-netmouth driving method, device and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115314471A (en) * | 2022-08-08 | 2022-11-08 | 福州创实讯联信息技术有限公司 | MAC address allocation method and terminal |
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| CN116781671A (en) | 2023-09-19 |
| CN112492064B (en) | 2023-05-09 |
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