CN111371608B - Method, device and medium for deploying SFC service chain - Google Patents
Method, device and medium for deploying SFC service chain Download PDFInfo
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Abstract
The embodiment of the invention discloses a method, a device and a medium for deploying an SFC service chain, which are used for constructing virtual machines with corresponding number on a network card according to the number of service processes carried in a virtualization instruction. And configuring a corresponding number of virtual interfaces for the target virtual machine according to the functional attribute corresponding to the target service process. The target virtual machine is any one of all virtual machines; the target service process is a service process corresponding to the target virtual machine, and interface configuration of all the virtual machines can be completed according to the processing mode of the target virtual machine, so that smooth execution of each service process is ensured. Different business processes on the business chain need to interact, and the connection relation of each virtual machine is established according to the execution sequence of each business process so as to utilize each virtual machine to complete the message business of the business chain. According to the technical scheme, no additional external hardware equipment is required to be added, and the influence of the forwarding performance of the OVS virtual switch is effectively solved by using the physical forwarding performance of the high-performance network card.
Description
Technical Field
The present invention relates to the field of service processing technologies, and in particular, to a method and an apparatus for deploying an SFC service chain, and a computer-readable storage medium.
Background
The traditional service node deployment is usually based on physical topology, and the service devices are connected in series to the service traffic path through manually configuring various strategies. When a service chain of a conventional network is changed and expanded, the network topology needs to be changed, and the configuration of network equipment needs to be performed again. The deployment and operation and maintenance mode has many problems, and the coupling between network devices is large, so that the service deployment is not flexible, the message forwarding efficiency is low, and the service devices cannot be shared.
Service Function Chain (SFC) is a technology that provides an ordered Service to an application layer. The SFC is used to logically join services on the network devices to form an ordered combination of services. The concept is similar to policy routing, i.e. the SFC makes network message traffic take a specific path, rather than looking at a routing table through an IP destination address to get a final destination.
Under the traditional network architecture, the SFC technology utilizes a virtual network to better integrate service services, thereby well solving the problems. SFC service chains generally have the following roles: a flow classification node and a service node. The flow classification node is used as an access node of an original data message, matches the data message according to a defined flow classification rule, performs Overlay packaging on the message and forwards the message to a service chain for processing. The service node is used as a resource to be distributed, the physical position of the service node can be random and scattered, and the service node completes the predefined work by defining and draining the service chain in series through the controller.
However, in conventional applications, flow classification nodes in the SFC are generally assumed by using a hardware access switch or an OVS virtual switch, and the hardware access switch needs to use additional hardware devices to perform the assumption, which increases the deployment cost. And the OVS virtual switch has limited forwarding performance, resulting in low service processing efficiency.
Therefore, how to improve the service processing efficiency without adding hardware devices is a problem to be solved by those skilled in the art.
Disclosure of Invention
Embodiments of the present invention provide a method, an apparatus, and a computer-readable storage medium for deploying an SFC service chain, which can improve service processing efficiency without adding hardware devices.
To solve the foregoing technical problem, an embodiment of the present invention provides a method for deploying an SFC service chain, including:
constructing a corresponding number of virtual machines on the network card according to the number of the service processes carried in the virtualization instruction;
configuring a corresponding number of virtual interfaces for the target virtual machine according to the functional attribute corresponding to the target service process; the target virtual machine is any one of all virtual machines; the target business process is a business process corresponding to the target virtual machine;
and establishing the connection relation of each virtual machine according to the execution sequence of each service process so as to utilize each virtual machine to complete the message service of a service chain.
Optionally, the method further comprises:
and when a service deleting instruction of the service chain is received, deleting the virtual machine corresponding to the service process identifier carried in the service deleting instruction on the network card.
Optionally, the method further comprises:
and when a service adding instruction of the service chain is received, a virtual machine corresponding to a service process carried in the service adding instruction is constructed on the network card.
Optionally, the virtual machines include a virtual machine that performs packet identification, a virtual machine that performs packet distribution, and a virtual machine that performs service processing on a packet.
Optionally, after configuring a corresponding number of virtual interfaces for the target virtual machine according to the function attribute corresponding to the target service process, the method further includes:
and adjusting the number of the virtual interfaces of the target virtual machine according to the configuration number received by the Hypervisor management interface.
The embodiment of the invention also provides a device for deploying the SFC service chain, which comprises a construction unit, a configuration unit and a connection unit;
the construction unit is used for constructing virtual machines with corresponding number on the network card according to the number of the service processes carried in the virtualization instruction;
the configuration unit is used for configuring virtual interfaces with corresponding number for the target virtual machine according to the function attribute corresponding to the target service process; the target virtual machine is any one of all virtual machines; the target business process is a business process corresponding to the target virtual machine;
the connection unit is configured to establish a connection relationship between the virtual machines according to an execution sequence of each service process, so as to complete a packet service of a service chain by using each virtual machine.
Optionally, a deleting unit is further included;
and the deleting unit is used for deleting the virtual machine corresponding to the service process identifier carried in the service deleting instruction on the network card when the service deleting instruction of the service chain is received.
Optionally, an adding unit is further included;
and the adding unit is used for constructing a virtual machine corresponding to the service process carried in the service adding instruction on the network card when the service adding instruction of the service chain is received.
Optionally, the virtual machines include a virtual machine that performs packet identification, a virtual machine that performs packet distribution, and a virtual machine that performs service processing on a packet.
Optionally, an adjusting unit is further included;
and the adjusting unit is used for adjusting the number of the virtual interfaces of the target virtual machine according to the configuration number received by the Hypervisor management interface.
The embodiment of the invention also provides a device for deploying the SFC service chain, which comprises the following steps:
a memory for storing a computer program;
a processor for executing the computer program to implement the steps of the method for deploying an SFC service chain as described in any of the above.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the steps of the method for deploying an SFC service chain according to any one of the above described embodiments.
According to the technical scheme, the virtual machines with corresponding number are constructed on the network card according to the number of the service processes carried in the virtualization instruction; different virtual machines are used to execute different business processes. The functions required to be realized by each service process are different, so that a corresponding number of virtual interfaces can be configured for the target virtual machine according to the function attribute corresponding to the target service process; the target virtual machine is any one of all virtual machines; the target service process is a service process corresponding to the target virtual machine, and interface configuration of all the virtual machines can be completed according to the processing mode of the target virtual machine, so that smooth execution of the service process is ensured. Different business processes on the business chain need to interact, and the connection relation of each virtual machine is established according to the execution sequence of each business process so as to utilize each virtual machine to complete the message business of the business chain. According to the technical scheme, no additional external hardware equipment is required to be added, the influence of the forwarding performance of the OVS virtual switch can be effectively solved due to the physical forwarding performance of the high-performance network card, and the service processing efficiency is effectively improved.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a flowchart of a method for deploying an SFC service chain according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of interaction of SFC, SFF and SF according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an apparatus for deploying an SFC service chain according to an embodiment of the present invention;
fig. 4 is a schematic hardware structure diagram of a device for deploying an SFC service chain according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Next, a method for deploying an SFC service chain provided in an embodiment of the present invention is described in detail. Fig. 1 is a flowchart of a method for deploying an SFC service chain according to an embodiment of the present invention, where the method includes:
s101: and constructing a corresponding number of virtual machines on the network card according to the number of the service processes carried in the virtualization instruction.
In the embodiment of the invention, the high-performance network card is virtualized by utilizing the SRIOV characteristic of the high-performance network card, and hardware acceleration support required by IO virtualization is provided. The high-performance network card may adopt PCIe devices.
In the embodiment of the present invention, a Virtual Machine (VM) may be set for each service process, and each VM has a service process carried by the VM.
According to the execution flow of the service on the service chain, the virtual machine may include three types: the Service Function Chain (SFC) executes message identification, the Service Function Forwarder (SFF) executes message distribution, and the Service Function (SF) performs Service processing on the message.
As shown in fig. 2, which is a schematic diagram of interaction between an SFC, an SFF, and an SF according to an embodiment of the present invention, the SFC is configured to identify a received message, and then distribute different types of messages to corresponding SFs through the SFF, so that the SFs perform service processing on the messages.
S102: and configuring a corresponding number of virtual interfaces for the target virtual machine according to the functional attributes corresponding to the target service process.
Different virtual machines can be connected through a virtual interface.
In the embodiment of the present invention, an introduction is given by taking any one of all virtual machines, that is, a target virtual machine as an example, and a service process on the target virtual machine is referred to as a target service process.
The function attributes corresponding to different business processes are different, and the function attributes are used for representing the operation steps required to be executed by the business processes. For example, a FireWall (FW), a Load Balancer (LB), an Intrusion Prevention System (IPS), and the like.
Each Virtual machine may support a Physical Function (PF) and a plurality of Virtual Functions (VFs). Each virtual function is a simplified version of a virtual interface, and in a specific implementation, a manager may configure the number of VFs through a Hypervisor management interface.
Taking the target virtual machine as an example, after the VF number of the target virtual machine is set. With the change of the service requirements, the administrator can also input the configuration number of the VFs corresponding to the target virtual machine through the Hypervisor management interface, thereby adjusting the number of the virtual interfaces of the target virtual machine.
S103: and establishing the connection relation of each virtual machine according to the execution sequence of each service process so as to complete the message service of the service chain by using each virtual machine.
When the service data message is transmitted in the network, it needs to pass through various service nodes, i.e. virtual machines, so that the network can be guaranteed to provide safe, fast and stable network service for users according to design requirements.
Therefore, in the embodiment of the present invention, the connection relationship of each virtual machine needs to be established according to the execution sequence of each service process. The SFC function can be realized by starting a service process in the virtual machine, and then the forwarding intercommunication among the virtual machines is realized by relying on the SRIOV function characteristic in the network card through the associated virtual interface.
According to the technical scheme, the virtual machines with corresponding number are constructed on the network card according to the number of the service processes carried in the virtualization instruction; different virtual machines are used to execute different business processes. The functions required to be realized by each service process are different, so that a corresponding number of virtual interfaces can be configured for the target virtual machine according to the function attribute corresponding to the target service process; the target virtual machine is any one of all virtual machines; the target service process is a service process corresponding to the target virtual machine, and interface configuration of all virtual machines can be completed according to the processing mode of the target virtual machine, so that smooth execution of the service process is ensured. And different service processes on the service chain need to interact, and the connection relation of each virtual machine is established according to the execution sequence of each service process so as to utilize each virtual machine to complete the message service of the service chain. According to the technical scheme, no additional external hardware equipment is required to be added, the influence of the forwarding performance of the OVS virtual switch can be effectively solved due to the physical forwarding performance of the high-performance network card, and the service processing efficiency is effectively improved.
In practical application, when a service process on a service chain is changed, in order to ensure smooth execution of the service process on the service chain, a virtual machine on a network card needs to be adjusted adaptively.
Specifically, when a service deletion instruction of the service chain is received, the virtual machine corresponding to the service process identifier carried in the service deletion instruction is deleted on the network card. And when a service adding instruction of the service chain is received, a virtual machine corresponding to the service process carried in the service adding instruction is constructed on the network card.
In the embodiment of the invention, each virtual machine has the service process carried by the virtual machine, so that the service processes on different virtual machines can be distinguished conveniently, and corresponding service process identifiers can be set for different service processes.
The business process identifier may be in the form of numbers or letters or a combination of the two. In the embodiment of the present invention, the specific form of the service process identifier is not limited, as long as different service processes can be distinguished.
By adding or deleting the virtual machines, different service requirements can be met, the flexibility of service deployment is improved, and the difficulty of operation of a service chain in changing and expanding capacity is reduced.
Fig. 3 is a schematic structural diagram of an apparatus for deploying an SFC service chain according to an embodiment of the present invention, including a constructing unit 31, a configuring unit 32, and a connecting unit 33;
a constructing unit 31, configured to construct, according to the number of service processes carried in the virtualization instruction, virtual machines of a corresponding number on the network card;
a configuration unit 32, configured to configure a corresponding number of virtual interfaces for the target virtual machine according to the functional attribute corresponding to the target service process; the target virtual machine is any one of all virtual machines; the target business process is a business process corresponding to the target virtual machine;
the connection unit 33 is configured to establish a connection relationship between the virtual machines according to the execution sequence of each service process, so as to complete a packet service of the service chain by using each virtual machine.
Optionally, a deleting unit is further included;
and the deleting unit is used for deleting the virtual machine corresponding to the service process identifier carried in the service deleting instruction on the network card when the service deleting instruction of the service chain is received.
Optionally, an adding unit is further included;
and the adding unit is used for constructing a virtual machine corresponding to the service process carried in the service adding instruction on the network card when the service adding instruction of the service chain is received.
Optionally, the virtual machines include a virtual machine that performs packet identification, a virtual machine that performs packet distribution, and a virtual machine that performs service processing on a packet.
Optionally, an adjusting unit is further included;
and the adjusting unit is used for adjusting the number of the virtual interfaces of the target virtual machine according to the configuration number received by the Hypervisor management interface.
The description of the features in the embodiment corresponding to fig. 3 may refer to the related description of the embodiment corresponding to fig. 1, and is not repeated here.
According to the technical scheme, the virtual machines with corresponding number are constructed on the network card according to the number of the service processes carried in the virtualization instruction; different virtual machines are used to execute different business processes. The functions required to be realized by each service process are different, so that a corresponding number of virtual interfaces can be configured for the target virtual machine according to the function attribute corresponding to the target service process; the target virtual machine is any one of all virtual machines; the target service process is a service process corresponding to the target virtual machine, and interface configuration of all virtual machines can be completed according to the processing mode of the target virtual machine, so that smooth execution of the service process is ensured. Different business processes on the business chain need to interact, and the connection relation of each virtual machine is established according to the execution sequence of each business process so as to utilize each virtual machine to complete the message business of the business chain. According to the technical scheme, no additional external hardware equipment is required to be added, the influence of the forwarding performance of the OVS virtual switch can be effectively solved due to the physical forwarding performance of the high-performance network card, and the service processing efficiency is effectively improved.
Fig. 4 is a schematic hardware structure diagram of an apparatus 40 for deploying an SFC service chain according to an embodiment of the present invention, including:
a memory 41 for storing a computer program;
a processor 42 for executing the computer program to implement the steps of the method of deploying an SFC service chain as described in any of the embodiments above.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method for deploying an SFC service chain according to any embodiment of the present invention are implemented.
The method, the apparatus, and the computer-readable storage medium for deploying an SFC service chain according to the embodiments of the present invention are described in detail above. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the components and steps of the various examples have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
Claims (10)
1. A method for deploying an SFC service chain, comprising:
constructing a corresponding number of virtual machines on the network card according to the number of the service processes carried in the virtualization instruction;
configuring a corresponding number of virtual interfaces for the target virtual machine according to the functional attributes corresponding to the target service process; the target virtual machine is any one of all virtual machines; the target business process is a business process corresponding to the target virtual machine;
and establishing a connection relation of each virtual machine according to the execution sequence of each service process so as to complete the message service of the service chain by using each virtual machine.
2. The method of claim 1, further comprising:
and when a service deleting instruction of the service chain is received, deleting the virtual machine corresponding to the service process identifier carried in the service deleting instruction on the network card.
3. The method of claim 2, further comprising:
and when a service adding instruction of the service chain is received, a virtual machine corresponding to the service process carried in the service adding instruction is constructed on the network card.
4. The method according to any one of claims 1 to 3, wherein the virtual machines include a virtual machine that performs message identification, a virtual machine that performs message distribution, and a virtual machine that performs service processing on a message.
5. The method according to claim 1, wherein after configuring a corresponding number of virtual interfaces to the target virtual machine according to the functional attribute corresponding to the target business process, the method further comprises:
and adjusting the number of the virtual interfaces of the target virtual machine according to the configuration number received by the Hypervisor management interface.
6. The device for deploying the SFC service chain is characterized by comprising a construction unit, a configuration unit and a connection unit;
the construction unit is used for constructing virtual machines with corresponding number on the network card according to the number of the service processes carried in the virtualization instruction;
the configuration unit is used for configuring virtual interfaces with corresponding number for the target virtual machine according to the function attribute corresponding to the target service process; the target virtual machine is any one of all virtual machines; the target business process is a business process corresponding to the target virtual machine;
the connection unit is configured to establish a connection relationship between the virtual machines according to an execution sequence of each service process, so as to complete a packet service of a service chain by using each virtual machine.
7. The apparatus of claim 6, further comprising a deletion unit;
and the deleting unit is used for deleting the virtual machine corresponding to the service process identifier carried in the service deleting instruction on the network card when the service deleting instruction of the service chain is received.
8. The apparatus of claim 7, further comprising an adding unit;
and the adding unit is used for constructing a virtual machine corresponding to the service process carried in the service adding instruction on the network card when the service adding instruction of the service chain is received.
9. An apparatus for deploying an SFC service chain, comprising:
a memory for storing a computer program;
a processor for executing the computer program to implement the steps of the method of deploying an SFC service chain as claimed in any of claims 1 to 5.
10. A computer-readable storage medium, characterized in that it has stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of deploying an SFC service chain as claimed in any one of claims 1 to 5.
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| CN112511432B (en) * | 2020-11-12 | 2022-01-25 | 中国科学院计算技术研究所 | Method and system for configuring and transmitting virtualization SFC (Small form factor) route of Overlay network |
| CN112822059B (en) * | 2021-02-09 | 2022-08-16 | 江苏省未来网络创新研究院 | Service chain arrangement management system and method facing intelligent network card |
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| CN108306832A (en) * | 2018-01-29 | 2018-07-20 | 北京启明星辰信息安全技术有限公司 | A kind of network flow quantity shunting method and device |
| CN108463989A (en) * | 2016-01-25 | 2018-08-28 | 华为技术有限公司 | It is linked across the business function of multiple sub-networks |
| CN109952746A (en) * | 2016-11-14 | 2019-06-28 | 华为技术有限公司 | Physics and virtual network function are integrated in business chain network environment |
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| CN108463989A (en) * | 2016-01-25 | 2018-08-28 | 华为技术有限公司 | It is linked across the business function of multiple sub-networks |
| CN109952746A (en) * | 2016-11-14 | 2019-06-28 | 华为技术有限公司 | Physics and virtual network function are integrated in business chain network environment |
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