CN106657436A - Message processing method and device - Google Patents
Message processing method and device Download PDFInfo
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- CN106657436A CN106657436A CN201611075282.7A CN201611075282A CN106657436A CN 106657436 A CN106657436 A CN 106657436A CN 201611075282 A CN201611075282 A CN 201611075282A CN 106657436 A CN106657436 A CN 106657436A
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- message
- fpga module
- array
- business processing
- concordance list
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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
Abstract
The invention provides a message processing method and device, which are applied to network equipment. The network equipment comprises an FPGA (Field Programmable Gate Array) module. The method comprises the following steps that: after receiving a message, the FPGA module determines a protocol type of the message; when the FPGA module determines that the message is an IPv4 (Internet Protocol version 4) message, the FPGA module finds a service processing strategy of the IPv4 message based on a first type index table corresponding to the IPv4 message; when the FPGA module determines that the message is an IPv6 (Internet Protocol version 6) message, the FPGA module finds a service processing strategy of the IPv6 message based on a second type index table corresponding to the IPv6 message; and the FPGA module performs service processing on the corresponding message according to the found service processing strategy, wherein the storage position of the first type index table is different from the storage position of the second type index table. The FPGA module can realize an IPv4 strategy finding function and an IPv6 strategy finding function based on a set of programs, so that resources of the FPGA module of the network equipment are saved.
Description
Technical field
The application is related to communication technical field, more particularly to a kind of message processing method and device.
Background technology
With the fast development of Internet technology, IPv4 is increasingly difficult to meet business need due to its address space for limiting to
Ask, IPv6 arises at the historic moment.Nowadays existing IPv4 messages in increasing network environment, also there is IPv6 messages, therefore prevent fires
The network equipments such as wall generally need to support two kinds of agreements simultaneously.
The content of the invention
In view of this, the application provides a kind of message processing method and device, to solve correlation technique in the network equipment
The problem of the 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, methods described is applied to the network equipment, and the network sets
Standby to include FPGA module, methods described includes：
FPGA module determines the protocol class of the message when message is received；
FPGA module indexes table search when it is determined that the message is IPv4 messages based on the corresponding first kind of IPv4 messages
The Business Processing strategy of the IPv4 messages；
FPGA module indexes table search when it is determined that the message is IPv6 messages based on the corresponding Equations of The Second Kind of IPv6 messages
The Business Processing strategy of the IPv6 messages；
FPGA module carries out Business Processing according to the Business Processing strategy for finding to corresponding message；
Wherein, the first kind concordance list is different from the storage location of the Equations of The Second Kind concordance list.
Second aspect, the application provides a kind of message process device, and described device is applied to the network equipment, and the network sets
Standby to include FPGA module, the FPGA module is configured to：
When message is received, the protocol class of the message is determined；
When it is determined that the message is IPv4 messages, based on the IPv4 messages corresponding first kind index table search IPv4 reports
The Business Processing strategy of text；
When it is determined that the message is IPv6 messages, based on the IPv6 messages corresponding Equations of The Second Kind index table search IPv6 reports
The Business Processing strategy of text；
Business Processing strategy according to finding carries out Business Processing to corresponding message；
Wherein, the first kind concordance list is different from the storage location of the Equations of The Second Kind concordance list.
Analysis above-mentioned technical proposal understand, the FPGA module of the network equipment when IPv4 messages or IPv6 messages is received,
Can be based on the Business Processing strategy of the corresponding index table search message of the message that receives, and according to the business for finding 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, just can realize IPv4
Tactful locating function and IPv6 strategy locating functions, such that it is able to save network equipment FPGA module resource.
Description of the drawings
Fig. 1 is the schematic diagram of the tactful lookup method of FPGA module in correlation technique；
Fig. 2 is a kind of flow chart of the message processing method shown in the exemplary embodiment of the application one；
Fig. 3 is the schematic diagram of the tactful lookup method of the application FPGA module；
Fig. 4 is the flow chart of another kind of message processing method shown in the exemplary embodiment of the application one；
Fig. 5 is a kind of hardware structure diagram of the message process device place equipment shown in the exemplary embodiment of the application one.
Specific embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Explained below is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.Conversely, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects described in detail in claims, the application.
It is, only merely for the purpose of description specific embodiment, and to be not intended to be limiting the application in term used in this application.
" one kind ", " described " and " being somebody's turn to do " of singulative used in the application and appended claims is also intended to include majority
Form, unless context clearly shows that other implications.It is also understood that term "and/or" used herein is referred to and wrapped
Containing one or more associated any or all possible combinations for listing project.
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 for that same type of information is distinguished from each other out.For example, without departing from
In the case of the application scope, 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 linguistic context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determining ".
Tactful locating function is one of basic function of the network equipment, can be used to search the industry corresponding to the message for receiving
Business processes strategy, and the network equipment can carry out Business Processing according to the Business Processing strategy for finding to the message, for example：Wrapped
Filter, network address translation etc..In correlation technique, the network equipment generally realizes above-mentioned tactful locating function using FPGA module, please
With reference to Fig. 1, the IPv4 strategy locating functions and IPv6 strategies locating function of FPGA module correspond to respectively two sets of independent programs.Net
Network equipment can run the corresponding program of IPv4 strategy locating functions to search the IPv4 messages when IPv4 messages are received
Business Processing strategy, and the corresponding program of IPv6 strategy locating functions is then idle；Likewise, the network equipment is receiving IPv6
During message, the corresponding program of IPv6 strategy locating functions can be run to search the Business Processing strategy of the IPv6 messages, and
The corresponding program of IPv4 strategy locating functions is then idle, and using aforesaid way the FPGA module wasting of resources can be caused.
Fig. 2 is refer to, is a kind of flow chart of the message processing method shown in the exemplary embodiment of the application one, the method
The network equipment is can apply to, the network equipment includes FPGA module, the method comprising the steps of：
Step 201：FPGA module determines the protocol class of the message when message is received.
In the present embodiment, the FPGA module of the network equipment can first judge that the message is IPv4 when message is received
Message or IPv6 messages.For example, FPGA module can according to the value of version (version number) field in the message for receiving,
Judge that the message is IPv4 messages or IPv6 messages, when the value of the field is 4, FPGA module can determine that the message is
IPv4 messages；When the value of the field is 6, FPGA module can determine that the message is IPv6 messages.
Step 202：FPGA module it is determined that the message be IPv4 messages when, based on the corresponding first kind rope of IPv4 messages
Draw the Business Processing strategy of the table search IPv4 messages.
In the present embodiment, FPGA module can be based on IPv4 messages when it is determined that the message for receiving is IPv4 messages
The corresponding first kind indexes the Business Processing strategy of the table search IPv4 messages.
Step 203：FPGA module it is determined that the message be IPv6 messages when, based on the corresponding Equations of The Second Kind rope of IPv6 messages
Draw the Business Processing strategy of the table search IPv6 messages.
In the present embodiment, FPGA module can be based on IPv6 messages when it is determined that the message for receiving is IPv6 messages
Corresponding Equations of The Second Kind indexes the Business Processing strategy of the table search IPv6 messages.
It should be noted that storage location of the first kind concordance list with the Equations of The Second Kind concordance list in Installed System Memory
It is different.
Step 204：FPGA module carries out Business Processing according to the Business Processing strategy for finding to corresponding message.
In the present embodiment, FPGA module, can be according to the Business Processing strategy pair after Business Processing strategy is found
Corresponding message carries out Business Processing, including：Packet filtering process is carried out to the message, or network ground is carried out to the message
Location conversion etc..
Embodiment with reference to shown in Fig. 2, refer to Fig. 3, and the application FPGA module, can be first in implementation strategy locating function
Determine when message is received at the protocol type of the message, then the business based on the corresponding index table search message of the message
Reason strategy.Wherein, the storage location of the corresponding concordance list of the different message of protocol type is different.Follow-up FPGA module can basis
The Business Processing strategy for finding carries out Business Processing to the message.Compared with correlation technique, FPGA module only need to be run a set of
Program, just can realize IPv4 strategy locating functions and IPv6 strategy locating functions, such that it is able to save network equipment FPGA moulds
Block resource.
With reference to abovementioned steps 202 and 203, Fig. 4 is refer to, the FPGA module of the network equipment can be based on using following steps
Index table search Business Processing strategy：
Step 401：The IP address of the message for receiving is divided into by one or more arrays according to default division rule.
In the present embodiment, the IP address of the message that FPGA module can be according to default division rule to receiving is carried out
Divide, the IP address is divided into one or more arrays.The division rule can voluntarily be arranged by user.The IP ground
Location is usually the source IP address of the message.
Step 402：According to the order of address bit big-endian, the array numbering is followed successively by.
In the present embodiment, FPGA module is after the IP address to the message is divided, can according to address bit by
A high position is followed successively by the array numbering to the order of low level.
Step 403：I-th array is extracted, and the i levels based on i-th array in correspondence message protocol classification are indexed
Make a look up in table.
In the present embodiment, if the message for receiving is IPv4 messages, FPGA module can extract i-th number
After group, make a look up in the i level concordance lists based on i-th array in first kind concordance list.If the message for receiving is
IPv6 messages, then FPGA module can after i-th array is extracted, based on i-th array Equations of The Second Kind concordance list i levels
Make a look up in concordance list.Wherein, the initial value of i is 1.
It should be noted that the one-level concordance list corresponding to each message protocol classification is fixed, the i levels concordance list by
The i-th -1 array determines in the i-th -1 grade concordance list, and is not a certain fixed concordance list.Such as：The two of IPv4 messages
Level concordance list is that the 1st number group polling in the corresponding one-level concordance list of IPv4 messages based on the IPv4 messages determines, changes speech
It, the secondary index table of different IPv4 messages is typically different.
Step 404：When the corresponding i+1 levels concordance list of i-th array is found in the i levels concordance list, by i
I+1 is updated to, step 403 is continued executing with.
In the present embodiment, the lookup result based on abovementioned steps 403, if FPGA module is in the i levels concordance list
The corresponding i+1 levels concordance list of i-th array is found, then can continue to extract i+1 array, and based on i+1
Array makes a look up in the i+1 levels concordance list of correspondence message protocol classification；If searched in the i+1 levels concordance list
To the corresponding i+2 levels concordance list of the i+1 array, then can continue the i-th+2 arrays of extraction, and based on the i-th+2 number
Group makes a look up in the i+2 levels concordance list of correspondence message protocol classification；By that analogy.
Step 405：When the corresponding Business Processing strategy of i-th array is found in the i levels 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 levels concordance list
Find the corresponding Business Processing strategy of i-th array, then can terminate this lookup, and based on the business for finding at
Reason strategy carries out Business Processing to correspondence message.
As an example it is assumed that the division rule that user is arranged is (follow-up to be referred to as " bit " according to 8 bits
" position ") length IP address is carried out into array division, i.e., each array length be 8.The length of the IP address of IPv4 messages is
32, the IP address of IPv4 messages can be divided into by 4 arrays according to the division rule, and the length of the IP address of IPv6 messages
Spend for 128, the IP address of IPv6 messages can be divided into by 16 arrays according to the division rule.
By taking IPv4 messages as an example, it is assumed that the source IP address of certain IPv4 message that FPGA module is received is
00111100101110101100001000000001 (60.186.194.1), then can be by source IP according to the division rule
Address is divided into 00111100,10111010,11000010,00000001 totally 4 arrays.According to address bit big-endian
Order, refer to table 1, can by array 00111100 numbering be 1, by array 10111010 numbering be 2, by array
11000010 numberings are 3, are 4 by the numbering of array 00000001.
| Array | 00111100 | 10111010 | 11000010 | 00000001 |
| Numbering | 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 one-level concordance list in make a look up.Table 2 below is a kind of example of the one-level concordance list：
Table 2
In this example, what is stored in table 2 is the corresponding relation between the 1st array and the memory address of secondary index table,
Can be seen that the corresponding secondary index table of different arrays by above-mentioned corresponding relation may be identical, 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 array correspondences
Secondary index table be likely to difference, 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.
With reference to table 2, FPGA module can find the corresponding secondary index of array 00111100 in the one-level concordance list
Table is stored in memory address 5, then FPGA module can again extract the 2nd array, i.e. array 10111010, and based on the array
Continue to make a look up in secondary index table in memory address 5.
In another example, it is assumed that the source IP address of certain IPv4 message that FPGA module is received is
00111101101110101100001000000001 (61.186.194.1), then according to the division rule, the 1st for marking off
Individual array is 00111101.FPGA module can first extract array 00111101, and be entered in one-level concordance list based on the array
Row is searched.With reference to table 2, FPGA module can find the corresponding Business Processing plan of array 00111101 in the one-level concordance list
Slightly network address translation, then FPGA module can terminate this lookup, and carry out network address translation, nothing to the IPv4 messages
The 2nd array need to again be extracted subsequently to be searched.
As seen from the above-described embodiment, although IPv4 messages are different with the IP address length of IPv6 messages, but for receiving
IPv4 messages and IPv6 messages, the IP address of the message can be divided into one or more arrays by FPGA module, and
Corresponding concordance list is searched successively based on each array, until find the corresponding Business Processing strategy of the message, subsequently can be with
Business Processing is carried out to the message based on the Business Processing strategy for finding.Adopt in such a way, FPGA module only needs fortune
The a set of program of row is capable of achieving IPv4 strategy locating functions and IPv6 strategy locating functions, such that it is able to save network equipment FPGA
Module resource.
It is corresponding with the embodiment of aforementioned message processing method, present invention also provides the embodiment of message process device.
Fig. 5 is refer to, is a kind of hardware of the message process device place equipment shown in the exemplary embodiment of the application one
Structure chart, the message process device can apply to the network equipment, and the network equipment includes FPGA module, the FPGA module
It is configured to：
When message is received, the protocol class of the message is determined；
When it is determined that the message is IPv4 messages, based on the IPv4 messages corresponding first kind index table search IPv4 reports
The Business Processing strategy of text；
When it is determined that the message is IPv6 messages, based on the IPv6 messages corresponding Equations of The Second Kind index table search IPv6 reports
The Business Processing strategy of text；
Business Processing strategy according to finding carries out Business Processing to corresponding message；
Wherein, the first kind concordance list is different from the storage location of the Equations of The Second Kind concordance list.
In an optional embodiment, FPGA module can be wrapped based on the process of index table search Business Processing strategy
Include：
The IP address of the message for receiving is divided into by one or more arrays according to default division rule；
According to the order of address bit big-endian, the array numbering is followed successively by；
I-th array is extracted, and is carried out in the i level concordance lists of correspondence message protocol classification based on i-th array
Search；
When the corresponding i+1 levels concordance list of i-th array is found in the i levels concordance list, i is updated into i+
1, continue executing with the step of extracting i-th array；
When the corresponding Business Processing strategy of i-th array is found in the i levels concordance list, terminate this and look into
Look for；
Wherein, the initial value of i is 1.
In another optional embodiment, the IP address includes：Source IP address.
In another optional embodiment, the Business Processing includes：Packet filtering, network address translation.
The function of the FPGA module of the above-mentioned network equipment realizes that process specifically refers to correspondence step in said method with effect
Rapid realizes process, will not be described here.
The preferred embodiment of the application is the foregoing is only, not to limit the application, all essences in the application
Within god and principle, any modification, equivalent substitution and improvements done etc. should be included within the scope of the application protection.
Claims (8)
1. a kind of message processing method, it is characterised in that methods described is applied to the network equipment, the network equipment includes FPGA
Module, methods described includes：
FPGA module determines the protocol class of the message when message is received；
FPGA module, should based on the corresponding first kind index table search of IPv4 messages when it is determined that the message is IPv4 messages
The Business Processing strategy of IPv4 messages；
FPGA module, should based on the corresponding Equations of The Second Kind index table search of IPv6 messages when it is determined that the message is IPv6 messages
The Business Processing strategy of IPv6 messages；
FPGA module carries out Business Processing according to the Business Processing strategy for finding to corresponding message；
Wherein, the first kind concordance list is different from the storage location of the Equations of The Second Kind concordance list.
2. method according to claim 1, it is characterised in that FPGA module is based on index table search Business Processing strategy
Process, including：
The IP address of the message for receiving is divided into by one or more arrays according to default division rule；
According to the order of address bit big-endian, the array numbering is followed successively by；
I-th array is extracted, and is made a look up in the i level concordance lists of correspondence message protocol classification based on i-th array；
When the corresponding i+1 levels concordance list of i-th array is found in the i levels concordance list, i is updated into i+1, after
It is continuous to perform the step of extracting i-th array；
When the corresponding Business Processing strategy of i-th array is found in the i levels concordance list, terminate this lookup；
Wherein, the initial value of i is 1.
3. method according to claim 2, it is characterised in that the IP address includes：Source IP address.
4. method according to claim 1, it is characterised in that the Business Processing includes：Packet filtering, the network address turn
Change.
5. a kind of message process device, it is characterised in that described device is applied to the network equipment, the network equipment includes FPGA
Module, the FPGA module is configured to：
When message is received, the protocol class of the message is determined；
When it is determined that the message is IPv4 messages, based on the IPv4 messages corresponding first kind index table search IPv4 messages
Business Processing strategy；
When it is determined that the message is IPv6 messages, based on the IPv6 messages corresponding Equations of The Second Kind index table search IPv6 messages
Business Processing strategy；
Business Processing strategy according to finding carries out Business Processing to corresponding message；
Wherein, the first kind concordance list is different from the storage location of the Equations of The Second Kind concordance list.
6. device according to claim 5, it is characterised in that FPGA module is based on index table search Business Processing strategy
Process, including：
The IP address of the message for receiving is divided into by one or more arrays according to default division rule；
According to the order of address bit big-endian, the array numbering is followed successively by；
I-th array is extracted, and is made a look up in the i level concordance lists of correspondence message protocol classification based on i-th array；
When the corresponding i+1 levels concordance list of i-th array is found in the i levels concordance list, i is updated into i+1, after
It is continuous to perform the step of extracting i-th array；
When the corresponding Business Processing strategy of i-th array is found in the i levels concordance list, terminate this lookup；
Wherein, the initial value of i is 1.
7. device according to claim 6, it is characterised in that the IP address includes：Source IP address.
8. device according to claim 5, it is characterised in that the Business Processing includes：Packet filtering, the network address turn
Change.
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| CN106657436B (en) | 2019-07-09 |
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