CN100542103C - A kind of method of hot upgrade of network processor and device - Google Patents
A kind of method of hot upgrade of network processor and device Download PDFInfo
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- CN100542103C CN100542103C CNB2006101504167A CN200610150416A CN100542103C CN 100542103 C CN100542103 C CN 100542103C CN B2006101504167 A CNB2006101504167 A CN B2006101504167A CN 200610150416 A CN200610150416 A CN 200610150416A CN 100542103 C CN100542103 C CN 100542103C
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Abstract
The present invention relates to a kind of method and device of hot upgrade of network processor.The engine that needs in the network processing unit among the present invention to upgrade is set to not have the message treatment state, and after accomplishing the setting up, business module instruction old in the described engine is upgraded in business module instruction after the use upgrading, thereby makes network processing unit realize hot upgrading under the situation of non-interrupting service.And implementation procedure of the present invention is stable, reliable, and the scope of application is extensive.Realization of the present invention can also be satisfied the modification of a large number of services block code, has improved the reliability and stability of router, guarantees the normal operation of carrier class business.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method and device of hot upgrade of network processor.
Background technology
The transformation of using to commerce from scientific research along with interactive network analysis (Internet), the network user rapidly increases, various types of application co-exist on the physical network, and the guarantee of the disposal ability of network node, service quality (QoS) and the network bandwidth become the major obstacle that Internet continues development gradually.But along with the development of optical transport technology, transmission bandwidth no longer becomes the bottleneck of network, and the disposal ability of network switching node seems particularly important.
In order to satisfy the variation that network makes rapid progress, gigabit router (GSR) and tril bit router (TSR) arise at the historic moment, and these high-end routers adopt big capacity switching fabric and hardware high speed retransmission technique, have improved message transferring speed greatly.Network processing unit (NP:Network Processor) as these devices exchange cores has also obtained swift and violent development and application.
Described network processing unit is a kind of programming device, is the brain of router device, and it is applied to the various tasks of the communications field, such as the converging of processing data packets, protocal analysis, route querying, sound/data, fire compartment wall, QoS.
Along with the continuous release of new technology, and the new demand of user to constantly proposing on the NP function, NP needs constantly upgrading, promptly uses the new and old instruction of new operating instruction, satisfies user's requirement and realizes new technology.So, on backbone network, moving the NP in the professional router, how under the situation of non-interrupting service, realizing that the heat upgrading of NP in the router becomes the emphasis of present research.
In existing technology, use modify instruction redirect technology to come the NP that is moving on the backbone network in the professional router is carried out the heat upgrading, the basic principle of this technology is the afterbody that the instruction that increases newly is put into the free area in micro-code instruction space, and the instruction that will revise is replaced to the instruction address that jumps to newly-increased microcode.
When adopting method of the prior art to upgrade, need be very familiar to microcode, also need the resources such as related register of whole NP very familiar, and need prevent to upgrade the time to the covering of NP internal resource, and this method only is fit to revise instruction code in a small amount.If when adopting this method to revise a software vulnerability (bug), need all need redirect in the discontinuous local while of original code, this just might cause upgrading asynchronous, and causing microcode to handle has problem, simultaneously, this method also can cause the waste of the instruction space.
Summary of the invention
The purpose of this invention is to provide a kind of method and device of hot upgrade of network processor, thereby make network processing unit under the situation of non-interrupting service, carry out the heat upgrading.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides a kind of method of hot upgrade of network processor, comprising:
The engine that needs in the network processing unit to upgrade is set to not receive message status, and described end is set after, postpone a period of time, make described engine be in no message treatment state;
Use the business module instruction after upgrading to upgrade business module instruction old in the described engine;
Remove the no message treatment state of engine described in the described network processing unit, recover described network processing unit normal running.
The method that the engine that needs in the described network processing unit to upgrade is set to not receive message status comprises: by general central processing unit in the network processing unit uplink of network processing unit is carried out the link level back-pressure.
Also comprise in the described method: if the engine that general central processing unit needs to upgrade in network processing unit has message to send to the webserver before being set to not have the message treatment state, then general central processing unit stops to send described message to network processing unit.
The present invention also provides a kind of device of hot upgrade of network processor, comprising:
The unit is set, and the engine that being used for network processing unit needs to upgrade is set to not receive message status, and described end is set after, postpone a period of time, make described engine be in no message treatment state;
Updating block is used for describedly the unit being set after accomplishing the setting up, uses the business module instruction after the upgrading to upgrade business module instruction old in the described engine, finishes the upgrading of network processing unit;
Recovery unit is used for after described updating block is finished renewal, removes the no message treatment state of engine described in the described network processing unit, recovers described network processing unit normal running.
The described unit that is provided with specifically comprises:
The setting state module, the engine that being used for network processing unit needs to upgrade is set to not receive message status;
The time delay module is used in described setting state module after accomplishing the setting up, postpones a period of time, guarantees that the engine that needs in the network processing unit to upgrade is no message treatment state.
As seen from the above technical solution provided by the invention, the invention provides method and device that a kind of reliable, simple, practical network processing unit heat is upgraded, thereby make network processing unit under the situation of non-interrupting service, realize the heat upgrading.And implementation procedure of the present invention is stable, reliable, and the scope of application is extensive.Realization of the present invention can also be satisfied the modification of a large number of services block code, has improved the reliability and stability of router, guarantees the normal operation of carrier class business.
Description of drawings
Fig. 1 is the method flow diagram of the hot upgrade of network processor of the embodiment of the invention;
Fig. 2 is the device schematic diagram of the hot upgrade of network processor of the embodiment of the invention;
Fig. 3 is the concrete structure schematic diagram that the unit is set of the embodiment of the invention.
Embodiment
Embodiments of the invention are by being provided with the engine that needs to upgrade in the network processing unit (NP), thereby have proposed the method with a kind of hot upgrade of network processor, make NP under the situation of non-interrupting service, realize the heat upgrading.
Embodiments of the invention are set to not have the message treatment state by the engine that needs among the NP to upgrade; And be under the no message treatment state at described engine, use the business module instruction after upgrading to upgrade business module instruction old in the described engine, and after finishing upgrading, recover the NP normal running.
More specifically say, the embodiment of the invention can be passed through technological means, make the engine that needs among the NP to upgrade can not receive message again, and in order to guarantee that the Service Processing Module in the described engine sends all residue messages, make the engine that needs among the NP to upgrade not receive message by technological means after, postpone a period of time again, so that the engine that needs among the NP to upgrade is in no message treatment state fully, then, use the business module instruction of upgrading to upgrade the instruction space of business module in the described engine, and after finishing the renewal upgrading, remove the no message treatment state of engine in the network processing unit, recover the network processing unit normal running.
For the ease of understanding to the embodiment of the invention, below the method for the invention is divided into three phases, and in conjunction with the method flow diagram (as shown in Figure 1) of the hot upgrade of network processor of the embodiment of the invention, the specific implementation process of the embodiment of the invention is described in detail, specifically comprise:
1, is set the stage
At present, the thought for the NP upgrading is: use the NP resource as much as possible less, promptly allow NP be under the simplest state; Which instruction what will carry out when determining upgrading as far as possible is; In the time of upgrading, also must consider the not same sex and the popularity of operation flow, to enlarge its scope of application.
And NP is in the simplest state is exactly that engine is when need handling without any message, because this time, engine can be in the polling status of message or the wait state that is activated, use the NP resource minimum in this state, the state of relevant NP also is the clearest and the most definite.
As long as so manage to allow the engine that needs to upgrade among the NP be under the state that to handle without any message, allow general central processing unit (CPU) directly use business module instruction after the upgrading then, the service order space refreshed just passable.
Based on described NP upgrading thought, the present invention adopts technological means, make the engine that needs among the NP to upgrade no longer receive message, described technological means can adopt the up link level back-pressure of carrying out to NP, but be not limited to this a kind of method, can also use other technological means, such as by resetting port, make described port no longer receive message, also can reach same effect.So just can guarantee that described engine can not receive message again.
Described to the up operation of carrying out the link level back-pressure of NP, can be by universal cpu control in the router.
Though pass through technological means, make described engine can not receive message again, but may also have in the Service Processing Module in the described engine and be in the message of receiving before not receiving message status at described engine and do not send, for the residue message that will may also have in the Service Processing Module in the described engine sends fully, so, make the engine that needs among the NP to upgrade not receive message by technological means after, can postpone a period of time again, so that described engine sends described remaining message fully, make the engine that needs among the NP to upgrade be in no message treatment state fully.Described time of delay, visual different upgrade cases were carried out difference setting, such as 1ms.
Comprise also in this stage that if the engine that needs to upgrade in NP is in before the no message treatment state, universal cpu sends to NP with message in the router, then universal cpu stops to send described message to NP.
2, update stage
After the engine that needs to upgrade in NP is in no message treatment state, use the business module instruction of upgrading to upgrade the instruction space of business module in the described engine.
3, the recovery stage
After described update stage is finished, cancel of the influence of the stage of setting to described engine, remove the no message treatment state of the engine after the upgrading among the NP, recover the network processing unit normal running.
This stage also comprises, sends message if suspend universal cpu in the stage that is provided with to NP, then recovers universal cpu in this stage and sends message to NP.
The realization of the embodiment of the method for the invention has following advantage:
1, this method is irrelevant with concrete NP, is suitable for multiple NP;
2, irrelevant with concrete operation flow, use the data communication product of NP can adopt the method upgrading, use the wireless product of NP also can adopt the method upgrading;
3, do not need the microcode machine code is understood, do not need very familiar yet the resources such as related register of whole NP;
4, do not need to prevent the covering of Added Business to NP inside useful resources;
5, can satisfy the modification of a large number of services block code;
6, reliability, the serviceability height;
7, can not waste an instruction,, not have yet because patch installing needs the extra redirect that increases because there is not the patch area notion;
8, can realize newly-increased microcode new features upgrading.
The present invention also provides a kind of device of hot upgrade of network processor, and described device schematic diagram as shown in Figure 2.Described device specifically comprises:
(1) unit is set, the engine that being used for network processing unit needs to upgrade is set to not have the message treatment state.
(2) updating block is used for the unit being set after accomplishing the setting up described, uses the business module instruction after upgrading to upgrade business module instruction old in the described engine, finishes the upgrading of network processing unit.
(3) recovery unit is used for after described updating block is finished renewal, removes the no message treatment state of engine in the network processing unit, recovers the network processing unit normal running.
Wherein, the described concrete structure schematic diagram that the unit is set as shown in Figure 3, the described unit that is provided with specifically can comprise:
The setting state module, the engine that being used for network processing unit needs to upgrade is set to not receive message status;
The time delay module is used in described setting state module after accomplishing the setting up, postpones a period of time, guarantees that the engine that needs in the network processing unit to upgrade is no message treatment state.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (5)
1, a kind of method of hot upgrade of network processor is characterized in that, comprising:
The engine that needs in the network processing unit to upgrade is set to not receive message status, and described end is set after, postpone a period of time, make described engine be in no message treatment state;
Use the business module instruction after upgrading to upgrade business module instruction old in the described engine;
Remove the no message treatment state of engine described in the described network processing unit, recover described network processing unit normal running.
2, method according to claim 1, it is characterized in that the method that the engine that needs in the described network processing unit to upgrade is set to not receive message status comprises: by general central processing unit in the network processing unit uplink of network processing unit is carried out the link level back-pressure.
3, method according to claim 1, it is characterized in that, also comprise in the described method: if the engine that general central processing unit needs to upgrade in network processing unit has message to send to the webserver before being set to not have the message treatment state, then general central processing unit stops to send described message to network processing unit.
4, a kind of device of hot upgrade of network processor is characterized in that, comprising:
The unit is set, and the engine that being used for network processing unit needs to upgrade is set to not receive message status, and described end is set after, postpone a period of time, make described engine be in no message treatment state;
Updating block is used for describedly the unit being set after accomplishing the setting up, uses the business module instruction after the upgrading to upgrade business module instruction old in the described engine, finishes the upgrading of network processing unit;
Recovery unit is used for after described updating block is finished renewal, removes the no message treatment state of engine described in the described network processing unit, recovers described network processing unit normal running.
5, device according to claim 4 is characterized in that, the described unit that is provided with specifically comprises:
The setting state module, the engine that being used for network processing unit needs to upgrade is set to not receive message status;
The time delay module is used in described setting state module after accomplishing the setting up, postpones a period of time, guarantees that the engine that needs in the network processing unit to upgrade is no message treatment state.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101504167A CN100542103C (en) | 2006-10-25 | 2006-10-25 | A kind of method of hot upgrade of network processor and device |
| PCT/CN2007/070925 WO2008052463A1 (en) | 2006-10-25 | 2007-10-18 | Method and apparatus for hot upgrading network processor |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006101504167A CN100542103C (en) | 2006-10-25 | 2006-10-25 | A kind of method of hot upgrade of network processor and device |
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| CN1968153A CN1968153A (en) | 2007-05-23 |
| CN100542103C true CN100542103C (en) | 2009-09-16 |
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| CN100542103C (en) * | 2006-10-25 | 2009-09-16 | 华为技术有限公司 | A kind of method of hot upgrade of network processor and device |
| CN101662390B (en) * | 2009-09-24 | 2012-10-10 | 中兴通讯股份有限公司 | Upgrade protecting method and device thereof |
| CN102325053B (en) * | 2011-09-22 | 2019-04-23 | 中兴通讯股份有限公司 | The control method and device of physical signal during router network access |
| CN102750190B (en) * | 2012-06-21 | 2016-02-24 | 腾讯科技（深圳）有限公司 | A kind of method that terminal leak is processed and device |
| CN107547222A (en) * | 2016-06-27 | 2018-01-05 | 中兴通讯股份有限公司 | Upgrade method and device of the single-stage router to cluster routers |
| CN112199100A (en) * | 2019-07-08 | 2021-01-08 | 中兴通讯股份有限公司 | Microcode upgrading method and device |
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| US6304929B1 (en) * | 1997-05-13 | 2001-10-16 | Micron Electronics, Inc. | Method for hot swapping a programmable adapter by using a programmable processor to selectively disabling and enabling power thereto upon receiving respective control signals |
| US6473433B1 (en) * | 2000-06-30 | 2002-10-29 | Marconi Communications, Inc. | Queue resynch: synchronous real-time upgrade of a distributed switching system |
| CN1283077C (en) * | 2002-11-11 | 2006-11-01 | 华为技术有限公司 | Method for raising retransmission capability of network processor for servicing multiple data parts |
| CN100358280C (en) * | 2003-06-18 | 2007-12-26 | 联想(北京)有限公司 | A network security appliance and realizing method thereof |
| CN1242599C (en) * | 2003-08-29 | 2006-02-15 | 港湾网络有限公司 | File-packaged down-load processing method |
| CN100542103C (en) * | 2006-10-25 | 2009-09-16 | 华为技术有限公司 | A kind of method of hot upgrade of network processor and device |
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