CN110011920A - A kind of message processing method and device - Google Patents
A kind of message processing method and device Download PDFInfo
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- CN110011920A CN110011920A CN201910289995.0A CN201910289995A CN110011920A CN 110011920 A CN110011920 A CN 110011920A CN 201910289995 A CN201910289995 A CN 201910289995A CN 110011920 A CN110011920 A CN 110011920A
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- message
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- edit
- action table
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/90—Buffering arrangements
- H04L49/901—Buffering arrangements using storage descriptor, e.g. read or write pointers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
Abstract
Present invention discloses a kind of message processing method and devices, method, which is included in destination oral thermometer, increases by the first index point, increase by second and third index point in next skip list, increase by the 4th index point in two layers of edit action table of tunnel edit action table and/or message, use first, second, third and fourth index point indexes four block storage in chip respectively, index obtains first respectively, second, third, 4th associated data, configuration includes the 5th associated data in two layers of edit action table of tunnel edit action table and/or message, data select information, edit location information, wherein, data selection information is for indicate how the message content needed in the first~the 5th associated data of selection, location information is edited for indicate how the message content chosen from the first~the 5th associated data is edited into message Position.The present invention realizes more rich flexibility in the case where not changing traditional MESSAGE EXCHANGE processing assembly line, with lower expense.
Description
Technical field
The present invention relates to a kind of message editing technologies, more particularly, to a kind of message processing method and device.
Background technique
High-performance Ethernet switching chip, usually specific integrated circuit mode design realization.In order to provide high-performance
Transfer capability, each piece of embedded static random access memory (Embedded Static Random-Access Memory,
ESRAM), a data Message processing can only access once.Therefore, the Message processing engine of assembly line (Pipeline) mode is all
Forwarding, the editor's information that control plane issues are saved using the eSRAM of limited quantity.
Meanwhile because eSRAM physical characteristic, in a certain range, depth is higher, and storage density is bigger.For example, it is assumed that
1K (1024) depth, the area that the eSRAM of 50 bit widths is shared on integrated circuit (Integrated Circuit, IC) are
1, then, same width, the possible area of the eSRAM of 2K depth is 1.5, and the area of 4K depth is 2.3 or so.
Therefore, on Message processing assembly line, control plane typically is saved using the eSRAM of a small number of specifications big several times
The main configuration information issued reuses a small amount of eSRAM to save special some configuration informations.
Traditional Ethernet switching chip goes out in the processing of direction in message, generally uses the logical table of 3~4 big capacity,
Correspondence is stored in the eSRAM of 3~4 pieces of larger depths, to save the edit configuration information that control plane issues.
For example, the relevant editor's information in the outlet for expressing message using NextHop (next-hop) table, including but it is unlimited
In: the editing and processing of VLAN (Virtual Local Area Network, virtual LAN), outlet Layer3Interface
The attribute etc. of (three layer interface of routing logic).The index of the possible tunnel edit action table of message is pointed out simultaneously
The index outerEditPtr of two layers of edit action table of innerEditPtr and possible message.The two index points point
It Suo Yin not Inner Edit table and Outer Edit table.This two pieces of tables are also to be saved by the biggish eSRAM of depth.
Typically, Inner Edit table saves a message encapsulation format to be added, source address, target such as IPv6
Address, stream label (Flow Label), while controlling whether life span (TTL), the difference handled using Forwarding plane
Service code point (DSCP), or message to be forwarded is write direct using TTL, DSCP of pre-configuration.
Typically, Outer Edit table saves ARP information table (ARP table) in logic, i.e., when message makes
When transmission with routing forwarding behavior from outlet, layer two MAC (the Media Access of next-hop (Next Hop)
Control) address (also known as Ethernet Address, ethernet address).
But the allocation list of predefined format, correspond to the ASIC of fixed function (Fixed Function).Current
Under, the demand that may be programmed (Programmable ASIC) is more and more, but traditional ethernet exchange chip can not be carried on the back again
From structure as the logical table for using 3~4 big capacity, otherwise it can become infeasible in engineering.Therefore it needs to propose one kind
Message information processing scheme solves the problems, such as this.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of message processing method and device are provided.
To achieve the above object, the following technical solutions are proposed: a kind of message processing method by the present invention, which comprises
S1 increases by the first index point in destination oral thermometer, increases by second and third index point in next skip list,
Increase by the 4th index point in two layers of edit action table of tunnel edit action table and/or message；
S2, export direction Message processing assembly line use first, second, third He in the internal editing and processing stage
4th index point indexes four block storages in chip respectively, and index obtains the first, second, third, fourth associated data respectively；
S3, in two layers of edit action table of the tunnel edit action table and/or message configuration include the 5th associated data,
Data select information, editor's location information, and the data selection information is for indicate how the first~the 5th associated data of selection
The message content of middle needs, editor's location information is for indicate how the report that will be chosen from the first~the 5th associated data
Position of the literary Edition Contains into message.
Preferably, in the destination oral thermometer stored messages destination port information, save message in the next skip list
Edit mode information；Stored messages seals up dress editor's information in the tunnel edit action table；Two layers of message editor
Storage address analysis protocol information table in behavior table.
Preferably, the edit mode information includes the attribute of the editing and processing of VLAN, three layer interface of routing logic；It is described
Seal up the source address, destination address, stream label that dress editor's information includes IPv6；The storage address analysis protocol information table includes
The two layer MAC address of message next-hop.
Preferably, the memory is the embedded static random access memory in Ethernet switching chip.
It preferably, include a plurality of entry in the memory, the bit wide of each entry is four kinds of 16,32,64,128 bit
Each four groups.
Preferably, the 5th associated data configured in two layers of edit action table of the tunnel edit action table and/or message
Bit wide be 32~96 bits.
Present invention further teaches another technical solutions: a kind of message process device, described device include:
Index point increases module and increases in next skip list for increasing by the first index point in destination oral thermometer
Second and third index point, increase by the 4th index point in two layers of edit action table of tunnel edit action table and/or message；
Data directory module, for the inside editing and processing stage in export direction Message processing assembly line, using described
First, second, third and fourth index point indexes four block storage in chip respectively, respectively index obtain first, second, the
Three, the 4th associated data；
Information collocation module, for configuring packet in two layers of edit action table of the tunnel edit action table and/or message
The 5th associated data, data selection information, editor's location information are included, the data selection information is for indicate how selection first
The message content needed in~the five associated data, editor's location information is for indicate how will be from the first~the 5th association
The message content chosen in data is edited into the position in message.
The beneficial effects of the present invention are: the present invention can make the case where not changing traditional MESSAGE EXCHANGE processing assembly line
Under, more rich flexibility is realized with lower expense.
Detailed description of the invention
Fig. 1 is the flow diagram of the method for the present invention；
Fig. 2 is the structural block diagram schematic diagram of apparatus of the present invention；
Fig. 3 is that EPPP of the present invention takes dial framework composition.
Specific embodiment
Below in conjunction with attached drawing of the invention, clear, complete description is carried out to the technical solution of the embodiment of the present invention.
A kind of disclosed message process device and method, by carrying out correlation table on Message processing assembly line
The item addition of field and the tissue of relevant entries are realized on traditional high bandwidth network switched integrated circuit, do not change tradition
In the case that MESSAGE EXCHANGE handles assembly line, by limited forwarding information table item index message editing information, opened with lower
Pin realizes the more rich flexibility of message editing behavior.
In conjunction with shown in Fig. 1 and Fig. 3, a kind of disclosed message processing method, comprising:
S1 increases by the first index point in destination oral thermometer, increases by second and third index point in next skip list,
Increase by the 4th index point in two layers of edit action table of tunnel edit action table and/or message.
Specifically, when a message completes Way in Message processing assembly line (Ingress Packet Processing
Pipeline, IPPP) processing after, by caching and scheduling, come export direction Message processing assembly line (Egress Packet
Processing Pipeline, EPPP) when, it needs to take destination oral thermometer (DST_PHY_PORT table).IPPP can be told
EPPP, the destination slogan of this message, i.e. transmitting terminal slogan.Meanwhile also can to outgoing packet in next exchange process,
Connect the next interchanger of this interchanger, the editing and processing mode of required message information, this edit mode information
It is stored in next skip list (NEXT_HOP table).It is also required to take NEXT_HOP table, therefore, what IPPP was provided is exactly this
The index value nextHopPtr of NEXT_HOP table.And destination slogan is then the index value of DST_PHY_PORT table.
The present invention increases by the first index point in above-mentioned DST_PHY_PORT table and (is expressed as
PktTemplateProfId0), increase the second index point (being expressed as pktTemplateProfId1) in NEXT_HOP table.
EPPP obtains the virtual interface or routing sub-interface that message needs to send after indexing NEXT_HOP table
(Layer3Interface, three layer interfaces) are realized by the VLAN field of editor's message.But if this message will be into
The complicated processing of row, such as tunnel operations carry out message sealing up dress edit action, then will give in NEXT_HOP table
Two layers of edit action table (Outer_ of the index value innerEditPtr of tunnel edit action table (INNER_EDIT table) and message out
EDIT table) index value outerEditPtr.If message has other behaviors, there will be other corresponding field informations to control
EPPP handles message.
The present invention increases third index point (being expressed as pktTemplateProfId1) in NEXT_HOP table.
General EPPP passes through index value innerEditPtr index after obtaining index value innerEditPtr
INNER_EDIT table.In this tables of data, there is the editor's information for sealing up dress.Such as: the source address of IPv6, destination address,
Stream label (Flow Label), while controlling whether the life span (TTL) handled using Forwarding plane, differential service generation
Code-point (DSCP), or message to be forwarded is write direct using TTL, DSCP of pre-configuration.The present invention is in INNER_EDIT table
Add one the 4th index point pktTemplateProfId3.
Similarly, general EPPP passes through index value outerEditPtr rope after obtaining index value outerEditPtr
Draw OUTER_EDIT table.In this tables of data, ARP information table (ARP table) in logic is saved, that is, works as report
When text is sent using routing forwarding behavior from outlet, layer two MAC (the Media Access of next-hop (Next Hop)
Control) address (also known as Ethernet Address, ethernet address).The present invention adds one in OUTER_EDIT table
Four index point pktTemplateProfId3.That is, the 4th index point pktTemplateProfId3 here can
To be added in INNER_EDIT table, perhaps add in OUTER_EDIT table or in INNER_EDIT table and OUTER_
One is respectively added in EDIT table.
S2, export direction Message processing assembly line use first, in two layers of editing and processing stage of tunnel editor or message
Two, the third and fourth index point indexes four block storage in chip respectively, and index obtains first, second, third, fourth respectively
Associated data.
Specifically, export direction Message processing assembly line of the present invention is in tunnel edit action INNER_EDIT pipeline processes
Stage (is indicated using the above-mentioned first~the 4th index point pktTemplateProfId0..3
PktTemplateProfId0, pktTemplateProfId1, pktTemplateProfId2, pktTemplateProfId3,
Similarly hereinafter), indexing 4 pieces respectively is not very big memory (i.e. eSRAM), in logic respectively PKT_TEMPLATE_PROFILE_
0..3。
In this four pieces of tables, the exit port information of configuration message, PKT_ in PKT_TEMPLATE_PROFILE_0 table
Two layers of port information of the logic of configuration message in TEMPLATE_PROFILE_1 table are matched in PKT_TEMPLATE_PROFILE_2 table
The three layer interface information of logic of message is set, configured tunneling technique edit action and/or two layers of message in PKT_TEMPLATE_PROFILE3
Edit action information.Why increase by second and two index points of third in NEXT_HOP table, is because in general one
A three layer interface of logic generally has one to arrive two layers of port of multiple logics.So passing through multiple expression two layers of ports of logic
NEXT_HOP table is directed toward an identical PKT_TEMPLATE_PROFILE_2, so that it may realize the category of multiple two layers of ports of logic
Property configuration and ownership a three layer interface attributes configuration.Preferably, this four pieces of tables respectively can only need 16 Entry
(entry, or be referred to as record, Record), each Entry only needs each four groups of four kinds of 16,32,64,128 bit.Point
The first, second, third, fourth associated data is not indexed, is expressed as pktTemplateData0..3.
S3, configuration includes the 5th associated data, data in two layers of edit action table of tunnel edit action table and/or message
Information, editor's location information are selected, data selection information in the first~the 5th associated data of selection for indicate how need
Message content edits location information for indicate how the message content chosen from the first~the 5th associated data is edited into
Position in message.
Specifically, tunnel edit action table (INNER_EDIT table) is redefined a kind of format by the present invention, is called FLEX_
EDIT can place following information in the definition of this format:
The 5th configurable associated data (being defined as pktTemplateData4), width are 32~96 bits.
Data select information, i.e., for indicate how the first~the 5th associated data of selection
(pktTemplateData0..4) message content needed in.
Edit location information, i.e., for indicate how it will be from the first~the 5th associated data
(pktTemplateData0..4) in choose message content be edited into message where.
Similarly, similar processing can be done in OUTER_EDIT table with INNER_EDIT table, i.e., can also be placed in table
Above- mentioned information.
The present invention can be realized richer in the case where not changing traditional MESSAGE EXCHANGE processing assembly line with lower expense
Rich flexibility, because are as follows:
Each message need the information edited can be it is completely different, if necessary to which these information are directly passed through
Expressed by INNER_EDIT table, then width required for INNER_EDIT table can substantially exceed usual value (such as 200 bits).
The definition of most of headings be all it is standardized, the difference is that the numerical value of the field in heading, these numerical value
It may be from the difference of exit port information, difference of logical port information etc. in repeating process.Therefore, fixed format and word
Section is pre-configured by four pieces of PKT_TEMPLATE_PROFILE tables.Format to be edited caused by interface is different is different, then uses
The different entries of PKT_TEMPLATE_PROFILE0 table are expressed；Format to be edited caused by virtual interface is different is different, then uses
The different entries of PKT_TEMPLATE_PROFILE1 table are expressed, and so on.And forward behavior different, then pass through INNER_
The different entries of EDIT and/or OUTER_EDIT itself provide pktTemplateData4 to express.In this way, just can subtract significantly
Expense brought by programmable message editing function is lacked.
It is corresponding with above-mentioned message processing method, as shown in connection with fig. 2, at a kind of revealed message of the embodiment of the present invention
Manage device, comprising:
Index point increases module and increases in next skip list for increasing by the first index point in destination oral thermometer
Second and third index point, increase by the 4th index point in two layers of edit action table of tunnel edit action table and/or message；
Data directory module, for two layers of editing and processing of tunnel editor or message in export direction Message processing assembly line
Stage indexes four block storage in chip using first, second, third and fourth index point respectively, indexes respectively
To the first, second, third, fourth associated data；
Information collocation module, for configuring packet in two layers of edit action table of the tunnel edit action table and/or message
The 5th associated data, data selection information, editor's location information are included, the data selection information is for indicate how selection first
The message content needed in~the five associated data, editor's location information is for indicate how will be from the first~the 5th association
The message content chosen in data is edited into the position in message.
The principle of each module can respectively refer to the description in above-mentioned steps S1~S3, and which is not described herein again.
Technology contents and technical characteristic of the invention have revealed that as above, however those skilled in the art still may base
Make various replacements and modification without departing substantially from spirit of that invention, therefore, the scope of the present invention in teachings of the present invention and announcement
It should be not limited to the revealed content of embodiment, and should include various without departing substantially from replacement and modification of the invention, and be this patent Shen
Please claim covered.
Claims (10)
1. a kind of message processing method, which is characterized in that the described method includes:
S1 increases by the first index point in destination oral thermometer, increases by second and third index point in next skip list, in tunnel
Increase by the 4th index point in two layers of edit action table of road edit action table and/or message；
S2, export direction Message processing assembly line use described first, in two layers of editing and processing stage of tunnel editor or message
Two, the third and fourth index point indexes four block storage in chip respectively, and index obtains first, second, third, fourth respectively
Associated data；
S3, configuration includes the 5th associated data, data in two layers of edit action table of the tunnel edit action table and/or message
Information, editor's location information are selected, the data selection information in the first~the 5th associated data of selection for indicate how need
The message content wanted, editor's location information is for indicate how by out of, message that choose in the first~the 5th associated data
Hold the position being edited into message.
2. a kind of message processing method according to claim 1, which is characterized in that stored messages in the destination oral thermometer
Destination port information, the edit mode information of message is saved in the next skip list；It is stored in the tunnel edit action table
Message seals up dress editor's information；Storage address analysis protocol information table in two layers of edit action table of the message.
3. a kind of message processing method according to claim 2, which is characterized in that the edit mode information includes VLAN
Editing and processing, three layer interface of routing logic attribute；Dress editor's information of sealing up includes the source address of IPv6, target
Location, stream label；The storage address analysis protocol information table includes the two layer MAC address of message next-hop.
4. a kind of message processing method according to claim 1, which is characterized in that the memory is Ethernet exchanging core
Embedded static random access memory in piece.
5. a kind of message processing method according to claim 1, which is characterized in that include a plurality of item in the memory
Mesh, the bit wide of each entry are each four groups of four kinds of 16,32,64,128 bit.
6. a kind of message processing method according to claim 1, which is characterized in that the tunnel edit action table and/or
The bit wide of the 5th associated data configured in two layers of edit action table of message is 32~96 bits.
7. a kind of message process device, which is characterized in that described device includes:
Index point increases module and increases by second in next skip list for increasing by the first index point in destination oral thermometer
With third index point, increase by the 4th index point in two layers of edit action table of tunnel edit action table and/or message；
Data directory module, for two layers of editing and processing rank of tunnel editor or message in export direction Message processing assembly line
Section, indexes four block storage in chip using first, second, third and fourth index point respectively, and index obtains respectively
First, second, third, fourth associated data；
Information collocation module, in two layers of edit action table of the tunnel edit action table and/or message configuration include the
Five associated datas, data selection information, editor's location information, the data selection information is for indicate how selection the first~the
The message content needed in five associated datas, editor's location information is for indicate how will be from the first~the 5th associated data
The message content of middle selection is edited into the position in message.
8. a kind of message process device according to claim 7, which is characterized in that stored messages in the destination oral thermometer
Destination port information, the edit mode information of message is saved in the next skip list；It is stored in the tunnel edit action table
Message seals up dress editor's information；Storage address analysis protocol information table in two layers of edit action table of the message.
9. a kind of message process device according to claim 8, which is characterized in that the edit mode information includes VLAN
Editing and processing, three layer interface of routing logic attribute；Dress editor's information of sealing up includes the source address of IPv6, target
Location, stream label；The storage address analysis protocol information table includes the two layer MAC address of message next-hop.
10. a kind of message process device according to claim 7, which is characterized in that the memory is Ethernet exchanging
Embedded static random access memory in chip.
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| CN110011920B (en) | 2021-03-23 |
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