CN106657436B - Message processing method and device - Google Patents
Message processing method and device Download PDFInfo
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- CN106657436B CN106657436B CN201611075282.7A CN201611075282A CN106657436B CN 106657436 B CN106657436 B CN 106657436B CN 201611075282 A CN201611075282 A CN 201611075282A CN 106657436 B CN106657436 B CN 106657436B
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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
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
- H04L61/2542—Translation of Internet protocol [IP] addresses involving dual-stack hosts
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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
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
- H04L61/2557—Translation policies or rules
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The application provides a kind of message processing method and device, is applied to the network equipment, the network equipment includes FPGA module: FPGA module determines the protocol class of the message when receiving message；FPGA module searches the business processing strategy of the IPv4 message based on the corresponding first kind concordance list of IPv4 message when determining the message is IPv4 message；FPGA module searches the business processing strategy of the IPv6 message based on the corresponding second class concordance list of IPv6 message when determining the message is IPv6 message；FPGA module carries out business processing to corresponding message according to the business processing strategy found；Wherein, the first kind concordance list is different from the storage location of the second class concordance list.The application FPGA module can realize IPv4 strategy locating function and IPv6 strategy locating function based on a set of program, to save network equipment FPGA module resource.
Description
Technical field
This application involves field of communication technology more particularly to a kind of message processing methods and device.
Background technique
With the fast development of Internet technology, IPv4 is increasingly difficult to meet business need due to the address space of its limitation
It asks, IPv6 comes into being.Nowadays existing IPv4 message in more and more network environments also has IPv6 message, therefore prevents fires
The network equipments such as wall usually require to support two kinds of agreements simultaneously.
Summary of the invention
In view of this, the application provides a kind of message processing method and device, to solve the network equipment in the related technology
The problem of FPGA module wasting of resources.
Specifically, the application is achieved by the following technical solution:
In a first aspect, the application provides a kind of message processing method, the method is applied to the network equipment, and the network is set
Standby includes FPGA module, which comprises
FPGA module determines the protocol class of the message when receiving message；
FPGA module is searched when determining the message is IPv4 message based on the corresponding first kind concordance list of IPv4 message
The business processing strategy of the IPv4 message；
FPGA module is searched when determining the message is IPv6 message based on the corresponding second class concordance list of IPv6 message
The business processing strategy of the IPv6 message；
FPGA module carries out business processing to corresponding message according to the business processing strategy found；
Wherein, the first kind concordance list is different from the storage location of the second class concordance list.
Second aspect, the application provide a kind of message process device, and described device is applied to the network equipment, and the network is set
Standby includes FPGA module, and the FPGA module is configured as:
When receiving message, the protocol class of the message is determined；
When determining the message is IPv4 message, IPv4 report is searched based on the corresponding first kind concordance list of IPv4 message
The business processing strategy of text；
When determining the message is IPv6 message, IPv6 report is searched based on the corresponding second class concordance list of IPv6 message
The business processing strategy of text；
Business processing is carried out to corresponding message according to the business processing strategy found；
Wherein, the first kind concordance list is different from the storage location of the second class concordance list.
Analyze above-mentioned technical proposal it is found that the FPGA module of the network equipment when receiving IPv4 message or IPv6 message,
The business processing strategy of the message can be searched based on the corresponding concordance list of message received, and according to the business found at
Reason strategy carries out business processing to the message.The FPGA module of the network equipment need to only run a set of program, can realize IPv4
Tactful locating function and IPv6 strategy locating function, so as to save network equipment FPGA module resource.
Detailed description of the invention
Fig. 1 is the schematic diagram of the tactful lookup method of FPGA module in the related technology；
Fig. 2 is a kind of flow chart of message processing method shown in one exemplary embodiment of the application；
Fig. 3 is the schematic diagram of the tactful lookup method of the application FPGA module；
Fig. 4 is the flow chart of another message processing method shown in one exemplary embodiment of the application；
Fig. 5 is a kind of hardware structure diagram of message process device place equipment shown in one exemplary embodiment of the application.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the application.
It is only to be not intended to be limiting the application merely for for the purpose of describing particular embodiments in term used in this application.
It is also intended in the application and the "an" of singular used in the attached claims, " described " and "the" including majority
Form, unless the context clearly indicates other meaning.It is also understood that term "and/or" used herein refers to and wraps
It may be combined containing one or more associated any or all of project listed.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the application
A little information should not necessarily be limited by these terms.These terms are only used to for same type of information being distinguished from each other out.For example, not departing from
In the case where the application range, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determination ".
Tactful locating function is one of basic function of the network equipment, can be used for searching industry corresponding to the message received
Business processing strategie, the network equipment can carry out business processing to the message according to the business processing strategy found, such as: it wrapped
Filter, network address translation etc..In the related technology, the network equipment generallys use FPGA module and realizes above-mentioned tactful locating function, asks
With reference to Fig. 1, the IPv4 strategy locating function and IPv6 strategy locating function of FPGA module respectively correspond two sets of independent programs.Net
Network equipment can run the corresponding program of IPv4 strategy locating function when receiving IPv4 message to search the IPv4 message
Business processing strategy, and the corresponding program of IPv6 strategy locating function is then idle；Likewise, the network equipment is receiving IPv6
When message, the corresponding program of IPv6 strategy locating function can be run to search the business processing strategy of the IPv6 message, and
The corresponding program of IPv4 strategy locating function is then idle, and will cause the FPGA module wasting of resources using aforesaid way.
Referring to FIG. 2, for a kind of flow chart of message processing method shown in one exemplary embodiment of the application, this method
It can be applied to the network equipment, which includes FPGA module, it the described method comprises the following steps:
Step 201:FPGA module determines the protocol class of the message when receiving message.
In the present embodiment, the FPGA module of the network equipment can first judge that the message is IPv4 when receiving message
Message or IPv6 message.For example, FPGA module can according to the value of version (version number) field in the message received,
Judge that the message is IPv4 message or IPv6 message, when the value of the field is 4, FPGA module can determine that the message is
IPv4 message；When the value of the field is 6, FPGA module can determine that the message is IPv6 message.
Step 202:FPGA module is based on the corresponding first kind rope of IPv4 message when determining the message is IPv4 message
Draw the business processing strategy that table searches the IPv4 message.
In the present embodiment, FPGA module can be based on IPv4 message when determining the message received is IPv4 message
Corresponding first kind concordance list searches the business processing strategy of the IPv4 message.
Step 203:FPGA module is based on the corresponding second class rope of IPv6 message when determining the message is IPv6 message
Draw the business processing strategy that table searches the IPv6 message.
In the present embodiment, FPGA module can be based on IPv6 message when determining the message received is IPv6 message
Corresponding second class concordance list searches the business processing strategy of the IPv6 message.
It should be noted that the first kind concordance list and the storage location of the second class concordance list in system memory
It is different.
Step 204:FPGA module carries out business processing to corresponding message according to the business processing strategy found.
In the present embodiment, FPGA module, can be according to the business processing strategy pair after finding business processing strategy
Corresponding message carries out business processing, comprising: carries out packet filtering processing to the message, or with carrying out network to the message
Location conversion etc..
Embodiment as shown in connection with fig. 2, referring to FIG. 3, the application FPGA module is in implementation strategy locating function, it can be first
The protocol type of the message is determined when receiving message, then is searched at the business of the message based on the corresponding concordance list of the message
Reason strategy.Wherein, the storage location of the corresponding concordance list of the different message of protocol type is different.Subsequent FPGA module can basis
The business processing strategy found carries out business processing to the message.Compared with the relevant technologies, FPGA module need to only run a set of
Program can realize IPv4 strategy locating function and IPv6 strategy locating function, so as to save network equipment FPGA mould
Block resource.
In conjunction with abovementioned steps 202 and 203, referring to FIG. 4, the FPGA module of the network equipment can be based on using following steps
Concordance list searches business processing strategy:
Step 401: the IP address of the message received is divided by one or more arrays according to preset division rule.
In the present embodiment, FPGA module can be carried out according to IP address of the preset division rule to the message received
It divides, the IP address is divided into one or more arrays.The division rule can be by user's self-setting.The IP
Location is usually the source IP address of the message.
Step 402: according to the sequence of address bit big-endian, being followed successively by the array number.
In the present embodiment, FPGA module is after the IP address to the message divides, can according to address bit by
A high position arrives the sequence of low level, is followed successively by the array number.
Step 403: extracting i-th of array, and the i grade based on i-th of array in corresponding message protocol classification indexes
It is searched in table.
In the present embodiment, if the message received is IPv4 message, FPGA module can extract i-th of number
After group, searched in the i grade concordance list in first kind concordance list based on i-th of array.If the message received is
IPv6 message, then FPGA module can after extracting i-th of array, based on i-th of array the second class concordance list i grade
It is searched in concordance list.Wherein, the initial value of i is 1.
It should be noted that level-one concordance list corresponding to each message protocol classification be it is fixed, the i grades of concordance list by
(i-1)-th array determines in (i-1)-th grade of concordance list, and is not a certain fixed concordance list.Such as: the two of IPv4 message
Grade concordance list is that the 1st several group pollings in the corresponding level-one concordance list of IPv4 message based on the IPv4 message determine, changes speech
It, the secondary index table of different IPv4 messages is typically different.
Step 404: when finding the corresponding i+1 grades of concordance list of i-th of array in the i grades of concordance list, by i
It is updated to i+1, continues to execute step 403.
In the present embodiment, the lookup result based on abovementioned steps 403, if FPGA module is in the i grades of concordance list
The corresponding i+1 grades of concordance list of i-th of array is found, then can continue to extract i+1 array, and based on i+1
Array is searched in the i+1 grades of concordance lists of corresponding message protocol classification；If searched in the i+1 grades of concordance list
It to the corresponding i+2 grades of concordance list of the i+1 array, then can continue the i-th+2 arrays of extraction, and be based on the i-th+2 numbers
Group is searched in the i+2 grades of concordance lists of corresponding message protocol classification；And so on.
Step 405: when finding the corresponding business processing strategy of i-th of array in the i grades of concordance list, knot
Shu Benci is searched.
In the present embodiment, the lookup result based on abovementioned steps 403, if FPGA module is in the i grades of concordance list
Find the corresponding business processing strategy of i-th of array, then can terminate this lookup, and based on the business found at
Reason strategy carries out business processing to corresponding message.
As an example it is assumed that the division rule of user setting is (subsequent to be referred to as " bit " according to 8 bits
" position ") length by IP address carry out array division, i.e., each array length be 8.The length of the IP address of IPv4 message is
32, the IP address of IPv4 message can be divided into according to the division rule by 4 arrays, and the length of the IP address of IPv6 message
Degree is 128, and the IP address of IPv6 message can be divided into 16 arrays according to the division rule.
By taking IPv4 message as an example, it is assumed that the source IP address for certain IPv4 message that FPGA module receives is 00111100101
The source IP address can be then divided into according to the division rule by 110101100001000000001 (60.186.194.1)
00111100,10111010,11000010,00000001 totally 4 arrays.According to the sequence of address bit big-endian, ask
Reference table 1, array 00111100 can be numbered is 1, is 2 by the number of array 10111010, is by the number of array 11000010
3, it is 4 by the number of array 00000001.
| Array | 00111100 | 10111010 | 11000010 | 00000001 |
| Number | 1 | 2 | 3 | 4 |
Table 1
FPGA module can first extract the 1st array, i.e. array 00111100, and based on the array in first kind concordance list
In level-one concordance list in searched.The following table 2 is a kind of example of the level-one concordance list:
Table 2
In this example, what is stored in table 2 is the 1st corresponding relationship between array and the memory address of secondary index table,
The corresponding secondary index table of different arrays may be identical it can be seen from above-mentioned corresponding relationship, such as: array 00000001 with
The corresponding secondary index table of array 00111100 is identical, is the concordance list being stored in memory address 5.Different arrays is corresponding
Secondary index table may also be different, such as: the corresponding secondary index table of array 00000000 is to be stored in memory address 1
Concordance list, and the corresponding concordance list of array 11111110 is the concordance list being stored in memory address 15.
In conjunction with table 2, FPGA module can find the corresponding secondary index of array 00111100 in the level-one concordance list
Table is stored in memory address 5, then FPGA module can extract the 2nd array, i.e. array 10111010 again, and be based on the array
Continue to search in the secondary index table in memory address 5.
In another example, it is assumed that the source IP address for certain IPv4 message that FPGA module receives is 00111101101
110101100001000000001 (61.186.194.1), then according to the division rule, the 1st array marked off is
00111101.FPGA module can first extract array 00111101, and be searched in level-one concordance list based on the array.Knot
Table 2 is closed, it is network that FPGA module can find the corresponding business processing strategy of array 00111101 in the level-one concordance list
Address conversion, then FPGA module can terminate this lookup, and carry out network address translation to the IPv4 message, no longer need to extract
2nd array carries out subsequent lookup.
As seen from the above-described embodiment, although IPv4 message is different with the IP address length of IPv6 message, for receiving
IPv4 message and IPv6 message, the IP address of the message can be divided into one or more arrays by FPGA module, and
Successively search corresponding concordance list based on each array, until find the corresponding business processing strategy of the message, it is subsequent can be with
Business processing is carried out to the message based on the business processing strategy found.In this manner, FPGA module only needs to transport
IPv4 strategy locating function and IPv6 strategy locating function can be realized in a set of program of row, so as to save network equipment FPGA
Module resource.
Corresponding with the embodiment of aforementioned message processing method, present invention also provides the embodiments of message process device.
Referring to FIG. 5, for the hardware of equipment where a kind of message process device shown in one exemplary embodiment of the application
Structure chart, the message process device can be applied to the network equipment, and the network equipment includes FPGA module, the FPGA module
It is configured as:
When receiving message, the protocol class of the message is determined；
When determining the message is IPv4 message, IPv4 report is searched based on the corresponding first kind concordance list of IPv4 message
The business processing strategy of text；
When determining the message is IPv6 message, IPv6 report is searched based on the corresponding second class concordance list of IPv6 message
The business processing strategy of text；
Business processing is carried out to corresponding message according to the business processing strategy found；
Wherein, the first kind concordance list is different from the storage location of the second class concordance list.
In an alternative embodiment, the process that FPGA module searches business processing strategy based on concordance list can wrap
It includes:
The IP address of the message received is divided into one or more arrays according to preset division rule；
According to the sequence of address bit big-endian, it is followed successively by the array number；
I-th of array is extracted, and is carried out in the i grade concordance list of corresponding message protocol classification based on i-th of array
It searches；
When finding the corresponding i+1 grades of concordance list of i-th of array in the i grades of concordance list, i is updated to i+
1, continue to execute the step of extracting i-th of array；
When finding the corresponding business processing strategy of i-th of array in the i grades of concordance list, terminates this and look into
It looks for；
Wherein, the initial value of i is 1.
In another alternative embodiment, the IP address includes: source IP address.
In another alternative embodiment, the business processing includes: packet filtering, network address translation.
The function of the FPGA module of the above-mentioned network equipment and the realization process of effect are specifically detailed in the above method corresponding step
Rapid realization process, details are not described herein.
The foregoing is merely the preferred embodiments of the application, not to limit the application, all essences in the application
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should be included within the scope of the application protection.
Claims (8)
1. a kind of message processing method, which is characterized in that the method is applied to the network equipment, and the network equipment includes FPGA
Module, which comprises
FPGA module determines the protocol class of the message when receiving message；
For FPGA module when determining the message is IPv4 message, being searched based on the corresponding first kind concordance list of IPv4 message should
The business processing strategy of IPv4 message；
For FPGA module when determining the message is IPv6 message, being searched based on the corresponding second class concordance list of IPv6 message should
The business processing strategy of IPv6 message；
Wherein, for the IPv4 message and IPv6 message that receive, FPGA module reports received IPv4 message and IPv6
The IP address of text is divided into one or more arrays, and successively searches corresponding concordance list based on each array, until finding institute
State the corresponding business processing strategy of message；
FPGA module carries out business processing to corresponding message according to the business processing strategy found；
Wherein, the first kind concordance list is different from the storage location of the second class concordance list.
2. the method according to claim 1, wherein FPGA module searches business processing strategy based on concordance list
Process, comprising:
The IP address of the message received is divided into one or more arrays according to preset division rule；
According to the sequence of address bit big-endian, it is followed successively by the array number；
I-th of array is extracted, and is searched in the i grade concordance list of corresponding message protocol classification based on i-th of array；
When finding the corresponding i+1 grades of concordance list of i-th of array in the i grades of concordance list, i is updated to i+1, after
It is continuous to execute the step of extracting i-th of array；
When finding the corresponding business processing strategy of i-th of array in the i grades of concordance list, terminate this lookup；
Wherein, the initial value of i is 1.
3. according to the method described in claim 2, it is characterized in that, the IP address includes: source IP address.
4. the method according to claim 1, wherein the business processing includes: packet filtering, network address turn
It changes.
5. a kind of message process device, which is characterized in that described device is applied to the network equipment, and the network equipment includes FPGA
Module, the FPGA module are configured as:
When receiving message, the protocol class of the message is determined；
When determining the message is IPv4 message, which is searched based on the corresponding first kind concordance list of IPv4 message
Business processing strategy；
When determining the message is IPv6 message, which is searched based on the corresponding second class concordance list of IPv6 message
Business processing strategy；
Wherein, for the IPv4 message and IPv6 message that receive, by the IP of received IPv4 message and IPv6 message
Location is divided into one or more arrays, and successively searches corresponding concordance list based on each array, until finding the message pair
The business processing strategy answered；
Business processing is carried out to corresponding message according to the business processing strategy found；
Wherein, the first kind concordance list is different from the storage location of the second class concordance list.
6. device according to claim 5, which is characterized in that FPGA module searches business processing strategy based on concordance list
Process, comprising:
The IP address of the message received is divided into one or more arrays according to preset division rule；
According to the sequence of address bit big-endian, it is followed successively by the array number；
I-th of array is extracted, and is searched in the i grade concordance list of corresponding message protocol classification based on i-th of array；
When finding the corresponding i+1 grades of concordance list of i-th of array in the i grades of concordance list, i is updated to i+1, after
It is continuous to execute the step of extracting i-th of array；
When finding the corresponding business processing strategy of i-th of array in the i grades of concordance list, terminate this lookup；
Wherein, the initial value of i is 1.
7. device according to claim 6, which is characterized in that the IP address includes: source IP address.
8. device according to claim 5, which is characterized in that the business processing includes: packet filtering, network address turn
It changes.
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| CN107948104A (en) * | 2017-12-25 | 2018-04-20 | 北京东土科技股份有限公司 | The method and switching equipment that message forwards in a kind of network address translation environment |
| CN109039822B (en) * | 2018-08-23 | 2020-09-01 | 烽火通信科技股份有限公司 | BFD protocol message filtering method and system |
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