CN102299862B - Quick forwarding equipment and method for two-layer tunnel - Google Patents
Quick forwarding equipment and method for two-layer tunnel Download PDFInfo
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- CN102299862B CN102299862B CN201110284231.6A CN201110284231A CN102299862B CN 102299862 B CN102299862 B CN 102299862B CN 201110284231 A CN201110284231 A CN 201110284231A CN 102299862 B CN102299862 B CN 102299862B
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Abstract
The invention provides a quick forwarding equipment and method for a two-layer tunnel. The equipment comprises a first interface driving module, a quick forwarding module, an IP (Internet Protocol) forwarding module and a second interface module which are positioned in an inner core. The equipment works in the following uplink forwarding mode: the first interface driving module receives a data message from a user side and sends the data message to the quick forwarding module; the quick forwarding module determines whether quick forwarding is to be performed, if so, the quick forwarding module encapsulates the data message, so that the outer layer source of the data message, a target IP address and the IP address of the quick forwarding equipment for the two-layer tunnel are on the same network segment; the IP forwarding module is called by the quick forwarding module to perform route search to obtain a target MAC (Media Access Control) address for replacing a temporary outer layer target MAC address; the quick forwarding module sends the data message to the second interface driving module; and the second interface driving module sends the data message to the server.
Description
Technical field
The present invention relates to data communication field, more specifically, the present invention relates to a kind of two layer tunnel fast-forwarding equipment and method.
Background technology
Tunneling technique (Tunneling) is a kind of by using network (such as, the Internet) infrastructure transmits the mode of data between networks, wherein, the data of tunneling technique transmission or load is used can be Frame or the bags of different agreement.Tunnel protocol, by the Frame of other agreement or bag Reseal, is then sent by tunnel, and the new frame head after encapsulation provides routing iinformation, to pass through the packed load data of network delivery.
Described tunnel-like is similar to the connection of point-to-point, and this mode can make to be transmitted by different tunnels in same infrastructure from the Network of many information sources.Tunneling technique uses point to point protocol instead of and exchanges and connects, and comes connection data address by route network.
Fig. 1 is the block diagram of the tunnel forwarding unit 100 that prior art is shown.As shown in Figure 1, the tunnel forwarding unit 100 of prior art comprises application 110 and kernel 120, and application 110 comprises forwarding module 111, and kernel 120 comprises first interface driver module 121 and the second interface driver module 122.
First interface driver module 121 receives data message from user side, and the data message received is sent to forwarding module 111.
Forwarding module 111 receives data message by socket from first interface driver module 121, carries out tunnel encapsulation process to it, and by socket, the data message of encapsulation is issued the second interface driver module 122.
Second interface driver module 122 receives the data message of encapsulation from forwarding module 111, and sends it to server.
Above-mentioned forward mode is uplink data messages forwarding process pattern, and downlink data message forward mode in contrast, does not repeat them here.
According to the tunnel forward process flow process of prior art, need to carry out the data interaction between twice kernel and application in the repeating process of each data message, therefore cause forward efficiency lower.
Summary of the invention
The object of the present invention is to provide a kind of two layer tunnel fast-forwarding equipment and method.
According to an aspect of the present invention, provide a kind of two layer tunnel fast-forwarding equipment, comprise: be arranged in the first interface driver module of kernel, fast-forwarding module, IP forward module and the second interface driver module, wherein, two layer tunnel fast-forwarding equipment works in following uplink data messages forward mode: first interface driver module receives data message from user side and is sent to fast-forwarding module; Fast-forwarding module determines whether to carry out fast-forwarding, when determining to carry out fast-forwarding, encapsulate to make the outer source of data message, object IP address be in phase same network segment with the IP address of two layer tunnel fast-forwarding equipment to data message, and the outer source of data message, target MAC (Media Access Control) address are temporarily all encapsulated as the MAC Address of the second interface driver module; IP forward module is called by fast-forwarding module and carries out route querying to obtain target MAC (Media Access Control) address, replaces temporary transient outer target MAC (Media Access Control) address; Data message is sent to the second interface driver module by fast-forwarding module; Second interface driver module, is sent to server by data message.
First interface driver module can be set to predetermined value by needing the protocol type of the data message carrying out fast-forwarding, and fast-forwarding module is by determining whether the protocol type of data message is that described predetermined value determines whether to carry out fast-forwarding.
Two layer tunnel fast-forwarding equipment also can work in following downlink data message forward mode: the second interface driver module, receives data message and be sent to fast-forwarding module from server; Fast-forwarding module, carries out decapsulation to data message and determines whether to carry out fast-forwarding, when determining to carry out fast-forwarding, data message is sent to first interface driver module; First interface driver module, is sent to user side by data message.
When determining not carry out fast-forwarding, data message can be returned to kernel by fast-forwarding module.
Two layer tunnel fast-forwarding equipment also can comprise more multiplex roles driver module, when determining to carry out fast-forwarding, and the interface driver module of specifying in fast-forwarding module searches heading, and data message is sent to the interface driver module of specifying.
Described two layer tunnel fast-forwarding equipment also can comprise: the control module being arranged in application, for arranging whether activate fast-forwarding module.
First interface driver module, fast-forwarding module, operation between the second interface driver module and IP forward module are undertaken by kernel.
According to a further aspect in the invention, provide a kind of two layer tunnel fast forwarding method, comprising: first interface driver module receives data message from user side and is sent to fast-forwarding module; Fast-forwarding module determines whether to carry out fast-forwarding, when determining to carry out fast-forwarding, encapsulate to make the outer source of data message, object IP address be in phase same network segment with the IP address of two layer tunnel fast-forwarding equipment to data message, and the outer source of data message, target MAC (Media Access Control) address are temporarily all encapsulated as the MAC Address of the second interface driver module; IP forward module is called by fast-forwarding module and carries out route querying to obtain outer target MAC (Media Access Control) address, replaces temporary transient target MAC (Media Access Control) address; Data message is sent to the second interface driver module by fast-forwarding module; Data message is sent to server by the second interface driver module, and wherein, first interface driver module, fast-forwarding module, IP forward module and the second interface driver module are arranged in kernel.
Described two layer tunnel fast forwarding method also can comprise: the second interface driver module receives data message from server and is sent to fast-forwarding module; Fast-forwarding module is carried out decapsulation to data message and is determined whether to carry out fast-forwarding, when determining to carry out fast-forwarding, data message is sent to first interface driver module; Data message is sent to user side by first interface driver module.
Beneficial effect
Because data retransmission is directly by kernel processes, improve tunnel forwarding performance, and make tunnel forwarding performance be not less than local forward process pattern.In addition, as the standalone module in kernel, the degree of coupling with other module is decreased.
Part in ensuing description is set forth the present invention other in and/or advantage, some will be clearly by describing, or can learn through enforcement of the present invention.
Accompanying drawing explanation
By the detailed description of carrying out below in conjunction with accompanying drawing, above and other objects of the present invention and feature will become apparent, wherein:
Fig. 1 is the block diagram of the tunnel forwarding unit that prior art is shown;
Fig. 2 is the block diagram that two layer tunnel fast-forwarding equipment is according to an exemplary embodiment of the present invention shown;
Fig. 3 is the block diagram that two layer tunnel fast uplink data message forwarding method is according to an exemplary embodiment of the present invention shown; And
Fig. 4 is the block diagram that two layer tunnel fast downlink data message forwarding method is according to an exemplary embodiment of the present invention shown.
Embodiment
Below, describe embodiments of the invention in detail with reference to accompanying drawing, wherein, identical label represents identical parts all the time.
Fig. 2 is the block diagram that two layer tunnel fast-forwarding equipment 200 is according to an exemplary embodiment of the present invention shown.Two layer tunnel fast-forwarding equipment 200 is based on Linux system according to an exemplary embodiment of the present invention, but is to be understood that the invention be not limited in this, and two layer tunnel fast-forwarding equipment 200 also can based on other suitable system, such as, and unix system.
As shown in Figure 2, two layer tunnel fast-forwarding equipment 200 comprises application 210 and kernel 220 according to an exemplary embodiment of the present invention, wherein, application 210 comprises control module 211, and kernel 220 comprises first interface driver module 221, fast-forwarding module 222, second interface driver module 223 and IP forward module 224.
First interface driver module 221 receives data message from user side, and the data message received is sent to fast-forwarding module 222.First interface driver module 221 can realize with data message point of departure.
Fast-forwarding module 222 receives data message from first interface driver module 221, and determines whether to carry out fast-forwarding to this data message.
As determining whether the example of data message being carried out to fast-forwarding, first interface driver module 221 can when receiving data message to needing the protocol type of the data message carrying out fast-forwarding to arrange a predetermined value (such as, 0x0019), subsequently, fast-forwarding module 222 can when receiving data message from first interface driver module 221, by determining whether the protocol type of data message is that described predetermined value carries out judging whether to carry out fast-forwarding to data message.Should be appreciated that, the invention is not restricted to above-mentioned example, also determine whether to carry out fast-forwarding to data message by alternate manner, such as, directly determined by fast-forwarding module 222.
If determine to carry out fast-forwarding to data message, then fast-forwarding module 222 pairs of data messages encapsulate, make the outer source IP address of data message and outer object IP address be in phase same network segment with the IP address of two layer tunnel fast-forwarding equipment 200, thus IP forward module 224 pairs of data messages can be cheated carry out route querying.Exemplarily, the outer source IP address of data message and outer object IP address can be encapsulated as the IP address of the second interface driver module 223 and the IP address of server by fast-forwarding module 222 respectively.In addition, the outer source MAC of data message and outer target MAC (Media Access Control) address are also temporarily all encapsulated as the MAC Address of the second interface driver module 223 by the step of described encapsulation.Should be appreciated that, the step of described encapsulation also can comprise operation well known in the art, such as adds tunnel protocol heading, interpolation UDP message message is first-class, do not repeat them here.
Subsequently, fast-forwarding module 222 is called IP forward module 224 and is carried out route querying to obtain actual purpose MAC Address, and use the target MAC (Media Access Control) address found to replace above-mentioned outer target MAC (Media Access Control) address temporarily to form complete data message, and this data message is sent to the second interface driver module 223.
Second interface driver module 223 receives the data message of encapsulation from fast-forwarding module 222, and sends it to server.Similar to first interface driver module 221, the second interface driver module 223 can realize with data message point of departure equally.
If determine not carry out fast-forwarding to data message, then data message is returned to kernel 220 to carry out subsequent treatment by fast-forwarding module 222.Described subsequent treatment can comprise and sends to the forwarding module 111 of the prior art in application 110 to carry out traditional data message forwarding data message by kernel 220, but the present invention is not limited thereto.
Above-mentioned forward mode is uplink data messages forward mode, will describe the downlink data message forward mode of two layer tunnel fast-forwarding equipment 200 according to an exemplary embodiment of the present invention below.
Second interface driver module 223 receives data message from server, and the data message received is sent to fast-forwarding module 222.
Fast-forwarding module 222 receives data message from the second interface driver module 223, carries out decapsulation, and determine whether to carry out fast-forwarding to this data message to the data message received.Exemplarily, if the type of message in heading indicates this data message to encapsulate according to fast-forwarding pattern, and the port numbers in heading indicates the Service-Port relevant to fast-forwarding pattern, then carry out fast-forwarding to this data message.Should be appreciated that, the invention is not restricted to above-mentioned example, also determine whether to carry out fast-forwarding to data message by alternate manner.
If determine to carry out fast-forwarding to data message, then data message is sent to first interface driver module 221 by fast-forwarding module 222.Selectively, two layer tunnel fast-forwarding equipment 200 also can comprise more multiplex roles driver module, if determine to carry out fast-forwarding to data message, then fast-forwarding module 222 searches the interface driver module of specifying in heading, and data message is sent to the interface driver module of specifying.
First interface driver module 221 receives data message from fast-forwarding module 222, and sends it to user side.
If determine not carry out fast-forwarding to data message, then data message is returned to kernel 220 to carry out subsequent treatment by fast-forwarding module 222.Described subsequent treatment can comprise and sends to the forwarding module 111 of the prior art in application 110 to carry out traditional data message forwarding data message by kernel 220, but the present invention is not limited thereto.
As optional module, control module 211 is for arranging whether activate fast-forwarding module 222 to uplink data messages forward mode or downlink data message forward mode when device initialize.If control module 211 activates fast-forwarding module 222, then according to above-mentioned fast-forwarding mode, fast-forwarding is carried out to data message, if control module 211 deactivates fast-forwarding module 222, then carry out data message forwarding according to the forward mode of the prior art shown in Fig. 1.
Should understand, above-mentioned first interface driver module 221, associative operation between fast-forwarding module 222, second interface driver module 223 and IP forward module 224 are all undertaken by kernel 220, this belongs to the common practise in this area, and therefore not to repeat here.
Fig. 3 is the block diagram that two layer tunnel fast uplink data message forwarding method is according to an exemplary embodiment of the present invention shown.
As shown in Figure 3, in step S310, first interface driver module 221 receives data message from user side, and the data message received is sent to forwarding module 222.
In step S320, fast-forwarding module 222 receives data message from first interface driver module 221, and determines whether to carry out fast-forwarding to this data message.
If determine to carry out fast-forwarding to data message, then in step S330, fast-forwarding module 222 is by encapsulating data message, to make the outer source of data message, object IP address be in phase same network segment with the IP address of two layer tunnel fast-forwarding equipment, and outer source, target MAC (Media Access Control) address is made temporarily all to be encapsulated as the MAC Address of the second interface driver module.
In step S340, fast-forwarding module 222 is called IP forward module 224 and is carried out route querying to obtain actual purpose MAC Address, and use the target MAC (Media Access Control) address found to replace above-mentioned outer target MAC (Media Access Control) address temporarily to form complete data message, and this data message is sent to the second interface driver module 223.
In step S350, the second interface driver module 223 receives the data message of encapsulation from fast-forwarding module 222, and sends it to server.
If determine not carry out fast-forwarding to data message, then in step S360, data message is returned to kernel 220 to carry out subsequent treatment by fast-forwarding module 222.
Fig. 4 is the block diagram that two layer tunnel fast downlink data message forwarding method is according to an exemplary embodiment of the present invention shown.
As shown in Figure 4, in step S410, the second interface driver module 223 receives data message from server, and the data message received is sent to forwarding module 222.
In step S420, fast-forwarding module 222 receives data message from the second interface driver module 223, carries out decapsulation, and determine whether to carry out fast-forwarding to this data message to the data message received.
If determine to carry out fast-forwarding to data message, then in step S430, data message is sent to first interface driver module 221 by fast-forwarding module 222.
In step S440, first interface driver module 221 receives data message from fast-forwarding module 222, and sends it to user side.
If determine not carry out fast-forwarding to data message, then in step S450, data message is returned to kernel 220 to carry out subsequent treatment by fast-forwarding module 222.
Although illustrate and describe the present invention with reference to certain exemplary embodiments, but it will be apparent to one skilled in the art that the various changes can made when not departing from the spirit and scope of the present invention of scope by claim and equivalents thereof in form and details.
Claims (9)
1. a two layer tunnel fast-forwarding equipment, comprising:
Be arranged in the first interface driver module of kernel, fast-forwarding module, IP forward module and the second interface driver module,
Wherein, two layer tunnel fast-forwarding equipment works in following uplink data messages forward mode:
First interface driver module receives data message from user side and is sent to fast-forwarding module;
Fast-forwarding module determines whether to carry out fast-forwarding, when determining to carry out fast-forwarding, encapsulate to make the outer source of data message, object IP address be in phase same network segment with the IP address of two layer tunnel fast-forwarding equipment to data message, and the outer source of data message, target MAC (Media Access Control) address are temporarily all encapsulated as the MAC Address of the second interface driver module, wherein, the outer source of data message, object IP address are encapsulated as the IP address of the second interface driver module and the IP address of server by fast-forwarding module respectively;
IP forward module is called by fast-forwarding module and carries out route querying to obtain target MAC (Media Access Control) address, replaces temporary transient outer target MAC (Media Access Control) address;
Data message is sent to the second interface driver module by fast-forwarding module;
Data message is sent to server by the second interface driver module.
2. two layer tunnel fast-forwarding equipment as claimed in claim 1, wherein, first interface driver module is set to predetermined value by needing the protocol type of the data message carrying out fast-forwarding, and fast-forwarding module is by determining whether the protocol type of data message is that described predetermined value determines whether to carry out fast-forwarding.
3. two layer tunnel fast-forwarding equipment as claimed in claim 1, wherein, two layer tunnel fast-forwarding equipment also works in following downlink data message forward mode:
Second interface driver module, receives data message from server and is sent to fast-forwarding module;
Fast-forwarding module, carries out decapsulation to data message and determines whether to carry out fast-forwarding, when determining to carry out fast-forwarding, data message is sent to first interface driver module;
First interface driver module, is sent to user side by data message.
4. the two layer tunnel fast-forwarding equipment as described in claim 1 or 3, wherein, when determining not carry out fast-forwarding, data message is returned to kernel by fast-forwarding module.
5. two layer tunnel fast-forwarding equipment as claimed in claim 3, wherein, two layer tunnel fast-forwarding equipment also comprises more multiplex roles driver module, when determining to carry out fast-forwarding, the interface driver module of specifying in fast-forwarding module searches heading, and data message is sent to the interface driver module of specifying.
6. the two layer tunnel fast-forwarding equipment as described in claim 1 or 3, also comprises:
Be arranged in the control module of application, for arranging whether activate fast-forwarding module.
7. the two layer tunnel fast-forwarding equipment as described in claim 1 or 3, wherein, first interface driver module, fast-forwarding module, operation between the second interface driver module and IP forward module are undertaken by kernel.
8. a two layer tunnel fast forwarding method, comprising:
First interface driver module receives data message from user side and is sent to fast-forwarding module;
Fast-forwarding module determines whether to carry out fast-forwarding, when determining to carry out fast-forwarding, encapsulate to make the outer source of data message, object IP address be in phase same network segment with the IP address of two layer tunnel fast-forwarding equipment to data message, and the outer source of data message, target MAC (Media Access Control) address are temporarily all encapsulated as the MAC Address of the second interface driver module, wherein, the outer source of data message, object IP address are encapsulated as the IP address of the second interface driver module and the IP address of server by fast-forwarding module respectively;
IP forward module is called by fast-forwarding module and carries out route querying to obtain outer target MAC (Media Access Control) address, replaces temporary transient target MAC (Media Access Control) address;
Data message is sent to the second interface driver module by fast-forwarding module;
Data message is sent to server by the second interface driver module,
Wherein, first interface driver module, fast-forwarding module, IP forward module and the second interface driver module are arranged in kernel.
9. two layer tunnel fast forwarding method as claimed in claim 8, also comprises:
Second interface driver module receives data message from server and is sent to fast-forwarding module;
Fast-forwarding module is carried out decapsulation to data message and is determined whether to carry out fast-forwarding, when determining to carry out fast-forwarding, data message is sent to first interface driver module;
Data message is sent to user side by first interface driver module.
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| CN201110284231.6A CN102299862B (en) | 2011-09-22 | 2011-09-22 | Quick forwarding equipment and method for two-layer tunnel |
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| CN102333026A (en) * | 2011-06-13 | 2012-01-25 | 中兴通讯股份有限公司 | Message forwarding method and device |
| CN103906038B (en) * | 2012-12-26 | 2017-07-07 | 普天信息技术研究院有限公司 | A kind of method and device for realizing UE and PDN server communications |
| CN103200068B (en) * | 2013-03-01 | 2016-02-10 | 北京傲天动联技术股份有限公司 | A kind of based on customer service Multiple tunnel transmitting device |
| CN108667732A (en) * | 2018-05-22 | 2018-10-16 | 新华三技术有限公司 | A kind of message forwarding method and device |
| CN113014627B (en) * | 2021-02-10 | 2022-07-26 | 深圳震有科技股份有限公司 | Message forwarding method and device, intelligent terminal and computer readable storage medium |
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