WO2011044821A1

WO2011044821A1 - Method and device for upgrading main routine of line card

Info

Publication number: WO2011044821A1
Application number: PCT/CN2010/077452
Authority: WO
Inventors: 张红卫; 江坤
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-10-12
Filing date: 2010-09-29
Publication date: 2011-04-21
Also published as: CN102043644B; CN102043644A

Abstract

A method and a device for upgrading a main routine of line card, which are used to solve the problems of low efficiency and poor accuracy of the update of main routine of line card in the prior art. The method comprises: when the version header information of the main routine is verified, Trivial File Transfer Protocol (TFTP) packets containing the version main body of the main routine are downloaded, and the downloaded main routine is adopted to update its own main routine. When the update of the main routine is performed in the line card, since only the TFTP packet containing the version header information of the main routine is download firstly, and the version main body of the main routine is downloaded only when the version header information of the main routine is verified to be valid, in this technical solution, the manner improves the accuracy and the security of the update of the main routine of line card, and improves the efficiency of the update of the main routine of the line card.

Description

Method and device for upgrading line card main program

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for upgrading a line card main program. Background technique

As various communication services continue to grow, in order to meet the needs of users for different communication services, an Optical Network Unit (ONU) needs to pass through a Passive Optical Network (PON) port and a fiber line terminal (Optical Line Terminal, OLT) connectivity, and the need to provide a variety of user interfaces with flexibility to work with different services. The ONU requires each line card to provide different business functions, each of which performs a relatively single business function.

1 is a schematic diagram showing the position structure of a line card in an ONU in the prior art. Each line card is controlled by a main control board, and the main control board sends each service to a corresponding line card for processing, wherein the first line card is processed. The line card of the TDM E1 service to the Internet Protocol (IP) service, the second line card handles the line card of the optical signal and the electric signal conversion service, and the third, fourth and fifth line cards are the lines for completing the voice service to the IP service processing. card.

As the user's demand for various services continues to increase, the function of the line card must be continuously improved, and the improvement of the line card function can be realized by adding a new line card or upgrading the existing line card main program, and by adding The way in which the line card implements the added function, because different functions, or different implementations of the same function are implemented by different line cards, the line card resources are wasted, so the existing line card main program can generally be upgraded. Its functions are constantly improving.

In the prior art, the main method of upgrading the line card main program is as follows: First, the main program of the line card is downloaded to the line card local, and then the downloaded main program is verified, and when the verification is passed, the line program itself is updated by using the downloaded main program. Main program, but due to the simple file transfer protocol (Trivial File) Transfer Protocol, TFTP) download, the download speed is slower, which affects the efficiency of the line card main program update. At the same time, when the main program is downloaded to the local, the main program is verified. When the verification fails, the second program is lost. The main program of the download is discarded, so the implementation method downloads the unnecessary main program in a long time, the accuracy is poor, and the resource is wasted again, and the upgrade efficiency of the line card main program is seriously affected. .

Or in the prior art, the complete TCP/IP, FTP protocol, etc. can be transplanted in the BOOT program in the online card, but the workload required is large, and the complexity of the BOOT degree code is increased, and at the same time, due to each line card The CPU and network implementation are different, so its portability is difficult to guarantee, which affects the update accuracy of the line card main program. Summary of the invention

In view of this, the embodiments of the present invention provide a method and an apparatus for upgrading a line card main program, which are used to solve the problem of low efficiency and poor accuracy of the line card main program in the prior art.

A method for upgrading a line card main program according to an embodiment of the present invention includes:

The line card receives a simple file transfer protocol TFTP packet containing the main program version header information to be downloaded;

When the main program version header information passes the verification, downloading a TFTP packet including the version body of the main program;

The main program is updated with the downloaded main program version header and the version body of the main program.

The main program for updating the main program version header and the version body of the main program downloaded by the main program is:

Verifying the version body of the main program;

When the verification is passed, the main program of the main program version and the version body of the main program are updated to update the main program of the main program.

The verification of the version body of the main program includes one or more of the following: The checksum of the kernel image is checked against the file system.

The verifying the main program version header information is: verifying the validity of the main program version header information.

The verifying the validity of the main program version header information is: verifying whether one or more of the checksum, the version function, and the version type of the version header correspond to its own main program.

The receiving the TFTP packet including the main program version header information to be downloaded is:

When it is determined that the main program itself is incomplete, the TFTP server receives the TFTP packet containing the version header information of the main program to be downloaded; and/or,

The status of the upgrade running control word in the main program is determined to support the online upgrade, and the TFTP packet containing the header information of the main program to be downloaded is received from the TFTP server.

An apparatus for upgrading a line card main program according to an embodiment of the present invention includes: a receiving module, a verification module, a downloading module, and an updating module;

The receiving module is configured to receive a simple file transfer protocol TFTP packet including a header version information of a main program to be downloaded;

The verification module is configured to check, in the simple file transfer protocol TFTP packet received by the receiving module, the version of the main program version header to be downloaded;

The downloading module is configured to: when the verification module determines to pass the verification of the main program version header information, download a TFTP packet including a version body of the main program;

The update module is configured to update the main program of the main program version header and the version body of the main program downloaded by the download module.

The update module includes: a check unit and an update unit; wherein

The verification unit is configured to verify a version body of the main program;

The updating unit is configured to: when the verification unit determines that the verification passes, update the main program of the main program version header and the version body of the main program by using the downloaded main program version header.

The receiving module includes: a first determining unit and a first receiving unit; The first determining unit is configured to determine whether the main program of the user is incomplete. The first receiving unit is configured to: when the first determining unit determines that the main program of the first determining unit is incomplete, receives the content to be received from the TFTP server. The TFTP packet of the downloaded main program version header information.

The receiving module includes: a second determining unit and a second receiving unit;

The second determining unit is configured to determine whether the status of the upgrade running control word in the main program of the main program is to support online upgrade;

The second receiving unit is configured to: when the status of the upgrade operation control word is upgraded in the main program of the second determining unit, to support the online upgrade, receive the version header information of the main program to be downloaded from the TFTP server. TFTP grouping.

An embodiment of the present invention provides a method and an apparatus for upgrading a line card main program. The method includes: when a main program version header information passes verification, downloading a TFTP packet including a version body of the main program, and downloading the The main program updates its own main program. In the embodiment of the present invention, when the line card performs the main program update, only the TFTP packet including the main program version header information is first downloaded, and when the main program version header information is verified to be valid, the version main body of the main program is downloaded. Therefore, the implementation improves the accuracy and security of the line card main program update, and improves the efficiency of the line card main program update. DRAWINGS

1 is a schematic structural view of a line card in an ONU in the prior art;

2 is a schematic structural diagram of components in an ONU according to an embodiment of the present invention;

3 is an upgrade process of a line card main program according to an embodiment of the present invention;

4 is a schematic structural diagram of a VOIP line card according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of an upgrade procedure of a main program in a VOIP line card according to an embodiment of the present invention; FIG. 6 is a schematic structural diagram of an apparatus for upgrading a line card main program according to an embodiment of the present invention. detailed description

In order to effectively improve the accuracy of the line card main program update and the efficiency of the line card main program update, the embodiment of the present invention provides a method for upgrading the line card main program, the method comprising: the line card receiving the main to be downloaded a TFTP packet of program version header information; when the main program version header information passes verification, downloading a TFTP packet containing a version body of the main program; using the downloaded main program version header and the main program The version body updates its own main program.

In the embodiment of the present invention, when the line card performs the main program update, only the TFTP packet including the main program version header information is first downloaded, and when the main program version header information is verified to be valid, the version main body of the main program is downloaded. Therefore, the implementation improves the accuracy and security of the line card main program update, and improves the efficiency of the line card main program update.

The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

2 is a schematic structural diagram of components in an ONU according to an embodiment of the present invention. In FIG. 2, 201 is a main control board, and the main control board sends each service to a corresponding line card for processing, and saves each line card. The information of the main program to be downloaded, 202 and 203 are Ethernet Passive Optical Network (EPON) line cards, EPON line cards complete the conversion of optical signals to electrical signals, and 204 is VOIP (Voice over Internet Protocol). The line card, the VOIP line card completes the processing of the voice service to the IP service, 205 is the E1 line card, the E1 line card realizes the processing of the TDM E1 service to the IP service, and 206 is the power board, which is responsible for supplying power to the main control board and each line card. 207 is a fan, responsible for the heat dissipation of the ONU.

FIG. 3 is a flowchart of upgrading a line card main program according to an embodiment of the present invention. As shown in FIG. 3, the process includes the following steps:

Step S301: The line card determines whether the main program saved by itself is complete. When the judgment is complete, step S307 is performed; otherwise, step S302 is performed.

Step S302: The line card is connected to the corresponding TFTP service end according to the address information of the locally saved TFTP server. In the embodiment of the present invention, the TFTP server is the main control board.

Of course, in the embodiment of the present invention, the determination of step S301 is not performed. After each booting, step S302 is directly performed, and the corresponding TFTP server is connected according to the locally stored address information of the TFTP server.

Step S303: The line card downloads a TFTP packet containing version header information of the main program.

Step S304: The line card verifies the version header information of the received main program. When the verification passes, step S305 is performed. Otherwise, step S307 is performed.

In the embodiment of the present invention, the step specifically includes: verifying validity of the version header according to the version header information of the downloaded main program, and when the verification is passed, according to the version header information of the main program and locally saved The main program determines that the locally saved main program needs to be upgraded. When the verification fails, it means that the local main program does not need to be upgraded.

Step S305: Download, from the TFTP server, each TFTP packet containing the version body of the main program, wherein each TFTP packet containing the version body of the main program is located after the TFTP packet containing the version header information of the main program.

Step S306: Update the locally saved main program information by using the received main program version header and the version body of the main program.

The updating the locally saved main program information by using the received main program version header and the version main body of the main program includes: considering the version main body information of the received main program as valid version body information, so the download can be directly used. The version header of the local main program and the version body of the main program update the version header of the locally saved main program and the version body of the main program.

Or in the embodiment of the present invention, in order to further increase the security and accuracy of the main program download, the main program saved by using the received main program version header and the version main body information of the main program includes: The version body is verified. When the verification is passed, the locally saved main program is updated with the received main program version header and the version header body of the main program.

The verification of the version body of the main program includes: downloading the main body of the main program of Linux One or more of the verification of the kernel image and the verification of the file system.

Step S307: The main program upgrade process ends.

In the embodiment of the present invention, before downloading the main program version body, the version header information of the main program is downloaded first, and when the version header information is verified, that is, the locally saved main program needs to be updated, the main program is downloaded. The version body information of the program, so the implementation process increases the accuracy of the main program upgrade. When the version header information fails the verification, that is, the main program corresponding to the version header information cannot be updated, the locally saved main program cannot be updated. The version body information of the main program is downloaded, so that the process of updating the main program is more accurate, and the update efficiency of the main program is improved.

Meanwhile, in the embodiment of the present invention, when the main program in the line card is destroyed, that is, when the integrity of the main program is destroyed, in the process of upgrading the main program of the line card, the main program of the line card itself The integrity of the judgment is made. When it is judged that the main program saved by itself is incomplete, the TFTP packet containing the header information of the main program version is received, and the version body information of the subsequent main program is downloaded, according to the downloaded main program version header and The version body of the main program updates the locally stored incomplete main program. Therefore, the implementation can ensure that the damaged main program is automatically restored when the main program is destroyed.

In the embodiment of the present invention, the TFTP client program in the line card BOOT is modified, and an interface is added. The TFTP client can send the version request information to the TFTP server, and receive the main program version header returned by the TFTP server. A TFTP packet of information, wherein the interface stops receiving other TFTP packets containing the main program upon receiving the TFTP packet containing the main program version header information.

4 is a schematic structural diagram of a VOIP line card according to an embodiment of the present invention. The VOIP line card includes an 8MB version memory FLASH for storing a main program required for current operation of the line card, and an Ethernet interface for performing information interaction with the main control board. The Ethernet port can be located in the CPU, and a memory space is reserved in the CPU. The BOOT program is stored in the BOOT chip, and the BOOT chip can have a capacity of 512 KB, and the CPU, the BOOT chip, and the 8 MB version memory. FLASH is connected via the CPU bus.

Combined with the VOIP line card shown in Figure 4, the line card can be ported to the LINUX operating system, related drivers, and application software. When the BOOT program in the line card uses the open source U-boot program, the BOOT program can provide serial port, FLASH driver and simple TFTP protocol, but the BOOT program cannot provide complete TCP/IP, FTP protocol, SOCKET. Interface, etc.

Table 1 shows the file format information of the main program provided by the embodiment of the present invention:

It can be seen that the version header information of the main program and the version body information are included in the file format of the main program. The version header information occupies 256 bytes, so the online card is on the main control board. When the TFTP server performs information exchange, it may first determine the location of the version header information, and receive a TFTP packet containing 256 bytes according to the location, that is, it may be considered that the TFTP packet including the main program version header information is received.

The name of the main program required for the current operation in the VOIP line card is V16B.MVR, the version number is V1.0.0T1, and the version creation date is 20090501. The TFTP server is the latest master of the main program saved by the main control board. The version number of the program is V1.0.0T2, the version creation date is 20090731, the line card is allowed to be upgraded, and the latest main program name is V16B.MVR. Figure 5 shows the upgrade process of the main program in the VOIP line card. The process includes the following steps:

Step S501: The VOIP line card is started, the BOOT program is loaded, the BOOT initializes the hardware, and the upgrade detection is started.

Step S502: It is judged whether the main program of its own is complete. When the judgment result is YES, step S503 is performed; otherwise, step S504 is performed.

Step S503: Determine whether the local main program allows online upgrade according to the status of the upgrade operation control word in the local BOOT program. When the determination result is yes, go to step S504; otherwise, go to step S511.

Step S504: The line card is connected to the TFTP server through its local Ethernet port according to the address of the locally saved TFTP server.

When the line card is connected to the TFTP server through its local Ethernet port, proceed to step S505. When the line card is not connected to the TFTP server through its local Ethernet port, the process of automatically updating the main program is performed. End.

Step S505: The line card uses the new interface in the local BOOT program to download the TFTP packet containing the version header information of the main program saved by the TFTP server.

The TFTP server saves the version header information and the version body information of the main program whose version name is VI 6B.MVR.

When the line card successfully receives the main program version header information of the TFTP server, the subsequent step is performed. Step S506, otherwise the process of automatically updating the main program ends.

Step S506: The line card verifies the validity of the version header information according to the version header information of the received main program. When the verification passes, step S507 is performed; otherwise, S511 is performed.

The process of verifying the validity of the version header information includes: determining whether one or more of a version header checksum, a version function, and a version type correspond to a main program saved by the line card itself, and then Compare the version number and version creation date required by the line card to run the current version, and whether the V16B.MVR version number and version creation date included in the download main program version header information are consistent.

Step S507: The line card downloads each TFTP packet containing the main program version body information from the TFTP server, and temporarily stores it in the memory.

The temporary memory can be the SDRAM space in the line card.

In the embodiment of the present invention, each TFTP packet containing the main program version body information is located after the TFTP packet containing the main program version header information.

When the line card successfully downloads the TFTP packet containing the main program version body information, the subsequent step S508 is performed, otherwise the process of automatically updating the main program ends.

Step S508: The line card performs validity check on the version body downloaded to the local main program. When the verification passes, step S509 is performed; otherwise, step S510 is performed.

Step S509: Update the main program required for the running by using the downloaded main program version header and the version body of the main program.

The update process specifically includes: curing the main program with the valid version number V16B.MVR to the 8MB FLASH of the line card, updating the original main program, the size of the Linux kernel image according to the version header, and the Linux kernel image. The offset in the V16B.MVR, the address of the Linux kernel image stored in the FLASH, the Linux kernel image code is solidified into the FLASH, according to the size of the file system of the version header, the offset of the file system in V16B.MVR, The file system image is stored in the address in the FLASH, and the file system image code is solidified into the FLASH. Step S510: The line card main program upgrade process ends, and the upgraded main program is started.

Step S511: The prompt is incorrect, and the line card is automatically restarted.

In the above process of the embodiment of the present invention, it is of course possible to determine whether the local main program is allowed to be upgraded online according to the status of the upgrade operation control word in the local BOOT program, that is, the main program saved locally can be considered complete. Only the judgment of step S503 is performed, and the subsequent process is performed based on the result of the judgment. Of course, the combination of the determining process of step S502 and step S503 can effectively ensure the accuracy of the main program upgrade process, thereby improving the efficiency of the main program upgrade.

FIG. 6 is a schematic diagram of an apparatus for upgrading a line card main program according to an embodiment of the present invention. As shown in FIG. 6, the apparatus includes:

The receiving module 61 is configured to receive a TFTP packet that includes the main program version header information to be downloaded, and the verification module 62 is configured to: download, to the receiving module, the main program version header information to be downloaded in the TFTP packet of the simple file transfer protocol. Perform verification

The downloading module 63 is configured to: when the verification module determines to pass the verification of the main program version header information, download the TFTP packet including the version body of the main program;

The update module 64 is configured to update the main program of the main program version header and the version body of the main program downloaded by the download module.

The update module 64 includes:

a verification unit 641, configured to verify a version body of the main program;

The updating unit 642, is configured to update the main program of the main program version header and the version body of the main program to be downloaded when the verification unit determines that the verification is passed.

The receiving module 61 includes:

The first determining unit 611 is configured to determine whether the main program of the user is incomplete;

The first receiving unit 612 is configured to: when the first determining unit determines that the main program of the user is incomplete, receive a TFTP packet that includes the main program version header information to be downloaded from the server. The receiving module 61 includes:

The second determining unit 613 is configured to determine whether the status of the upgrade running control word in the main program of the main program is to support the online upgrade;

The second receiving unit 614 is configured to: when the second determining unit determines the status of the running control word in the main program to support the online upgrade, receive a TFTP packet containing the version header information of the main program to be downloaded from the server.

An embodiment of the present invention provides a method and an apparatus for upgrading a line card main program, where the method includes: receiving, by a line card, a TFTP packet including a header version information of a main program to be downloaded; when the header information of the main program is verified And downloading the TFTP packet after the TFTP packet, wherein the subsequent TFTP packet includes a version body of the main program; and updating the main program of the main program by using the downloaded main program. In the embodiment of the present invention, when the line card performs the main program update, only the TFTP packet including the main program version header information is first downloaded, and when the main program version header information is verified to be valid, the version main body of the main program is downloaded. Therefore, the implementation improves the accuracy and security of the line card main program update, and improves the efficiency of the line card main program update. The spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

Claim

A method for upgrading a line card main program, the method comprising:

2. The method according to claim 1, wherein the main program for updating the main program version header of the download and the version body of the main program is:

Verifying the version body of the main program;

3. The method according to claim 2, wherein the verifying the version body of the main program comprises one or more of the following: verifying a kernel image of the main program against a file system check.

The method according to claim 1, wherein the verifying the main program version header information is: verifying validity of the main program version header information.

The method according to claim 4, wherein the verifying the validity of the main program version header information is: verifying one of a checksum, a version function, and a version type of the version header Whether or not it corresponds to its own main program.

The method according to claim 1, wherein the receiving the TFTP packet including the header version information of the main program to be downloaded is:

When it is determined that the main program itself is incomplete, the TFTP server receives the TFTP packet containing the header information of the main program to be downloaded; and/or, Determine the status of the upgrade run control word in its own main program to support online upgrade, from

The TFTP server receives the TFTP packet containing the header version information of the main program to be downloaded.

A device for upgrading a line card main program, the device comprising: a receiving module, a verifying module, a downloading module, and an updating module;

The device of claim 7, wherein the update module comprises: a check unit and an update unit;

The device of claim 7, wherein the receiving module comprises: a first determining unit and a first receiving unit;

The first determining unit is configured to determine whether the main program of the user is incomplete;

The first receiving unit is configured to: when the first determining unit determines that the main program of the first program is incomplete, receive a TFTP packet that includes the main program version header information to be downloaded from the TFTP server.

The device of claim 7, wherein the receiving module comprises: a second determining unit and a second receiving unit;

The second determining unit is configured to determine the status of the upgrade running control word in the main program of the user Whether to support online upgrades;