CN108111558A - A kind of high-speed packet disposal method, apparatus and system - Google Patents
A kind of high-speed packet disposal method, apparatus and system Download PDFInfo
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- CN108111558A CN108111558A CN201611055287.3A CN201611055287A CN108111558A CN 108111558 A CN108111558 A CN 108111558A CN 201611055287 A CN201611055287 A CN 201611055287A CN 108111558 A CN108111558 A CN 108111558A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
- H04L67/5682—Policies or rules for updating, deleting or replacing the stored data
Abstract
The present invention provides a kind of high-speed packet disposal method, apparatus and system, belongs to network-caching technical field, the described method includes：Data message storage first address is mapped to user virtual address space by memory mapping function mmap；It creates and the one-to-one message receiving thread of network interface card receiving queue；Start the message receiving thread, the data message is received by way of poll.High-speed packet disposal method, apparatus and system provided by the invention, by establishing default reception pattern between operating system nucleus module and user Virtual Space, so that it directly communicates during the transceiving data file of user Virtual Space with network interface card, data file need not be handled by operating system nucleus, improve the processing capacity of data file.
Description
Technical field
The present invention relates to network-caching technical field, more particularly to a kind of high-speed packet disposal method, apparatus and system.
Background technology
With the development of modern the Internet technology and the substantial increase of mobile phone user, the effect of internet caching system is more next
It is more important.The quick host for sending redirection message is analyzed and dispatched to most important component is in internet caching system, usually
Referred to as Redirect Server.
Existing message capturing technology such as Libpcap is mainly made of Network Taps and two part of data filter.Network
Tap collects data copy from network device driver, and data filter decides whether to receive the data packet.Libpcap
The link layer data bag that network interface card receives is filtered using BSD Packet Filter algorithms.Trawl performance will receive
Data packet replication portion give BPF (Berkeley Packet Filter, Berkeley Packet Filter), BPF is according to user
The rule of definition decides whether to receive this data packet and which content of the data packet is needed to copy, then by the number after filtering
According to being sent to upper level applications associated with filter.
Libpcap treatment technologies cause CPU frequently to handle interrupt status in busy, can not concede idle CPU processing industry
Business flow, causes received data packet treatment effeciency low.Meanwhile from trawl performance to kernel, then from kernel to user's space, number
It is repeatedly copied according to coating, wastes a large amount of CPU times and resource.So repeatedly copy also causes to add at the multiple flows of message
The time delay of reason.
The content of the invention
The embodiment of the present invention the technical problem to be solved is that providing a kind of high-speed packet disposal method, apparatus and system,
To solve existing CPU frequently interrupt status, the technical issues of data packet acquisition capability is low are handled in busy.
The present invention solves above-mentioned technical problem by the following technical programs：
One aspect of the present invention provides a kind of high-speed packet disposal method, including：
Data message storage first address is mapped to user virtual address space by memory mapping function mmap；
It creates and the one-to-one message receiving thread of network interface card receiving queue；
Start the message receiving thread, the data message is received by way of poll.
Further, the method further includes：
Determine the user property of the data message；
The data message is filtered according to the user property of the data message and systemic presupposition matched rule.
Further, the user property includes belonging to
Blacklist includes systemic presupposition packet parsing matched rule with blacklist, the systemic presupposition matched rule is not belonging to
With systemic presupposition hypertext transfer protocol http matched rules；
It is described to be included according to the user property and systemic presupposition matched rule of the data message filtering data message：
Judge whether the user property belongs to subscriber blacklist, the corresponding data message of filtering subscriber blacklist；
Filtering mismatches the data message of systemic presupposition packet parsing matched rule；
Filtering mismatches the data message of systemic presupposition hypertext transfer protocol http matched rules.
Further, it is described to judge whether the user property belongs to subscriber blacklist and include：
When user terminal IP address is located in preset IP address section, mark user property is subscriber blacklist.
Further, the systemic presupposition packet parsing matched rule includes：Protocol type belongs to TCP and destination interface is
80 http messages are matched data message.
Further, the systemic presupposition http matched rules include：Host fields match rule, uniform resource identifier
URI fields match rule and suffix type sets match rule；
The data message of the filtering mismatch system http matched rules includes：
Filtering suffix is not belonging to the data message of the suffix type sets match rule；
Filter domain name and the unmatched data message of host fields match rule；
Filter URI and the unmatched data message of URI fields match rule.
Another aspect of the present invention also provides a kind of high-speed packet disposal device, including：
Mapping block, for data message storage first address to be mapped to user virtually by memory mapping function mmap
Location space；
Creation module, for creating and the one-to-one message receiving thread of network interface card receiving queue；
Poll receiving module for starting the message receiving thread, receives the data message by way of poll.
Further, described device further includes：
Determining module, for determining the user property of the data message；
Processing module filters the data for the user property according to the data message and systemic presupposition matched rule
Message.
Further, the user property includes belonging to blacklist and is not belonging to blacklist, the systemic presupposition matching rule
Then include systemic presupposition packet parsing matched rule and systemic presupposition hypertext transfer protocol http matched rules；
The processing module includes：
First filtering module for judging whether the user property belongs to subscriber blacklist, filters subscriber blacklist pair
The data message answered；
Second filtering module, for filtering the data message for mismatching systemic presupposition packet parsing matched rule；
3rd filtering module, for filtering the datagram for mismatching systemic presupposition hypertext transfer protocol http matched rules
Text.
Another aspect of the present invention provides a kind of high-speed packet disposal system, at any of the above-described high-speed message
Manage device.
Compared with prior art, high-speed packet disposal method, apparatus and system provided in an embodiment of the present invention, by grasping
Make to establish default reception pattern between system kernel module and user Virtual Space so that user Virtual Space transceiving data file
When directly communicate with network interface card, data file need not be handled by operating system nucleus, improve the place of data file
Reason ability in addition, being filtered by the user property and preset matching rule of data file to data file, effectively reduces
The cpu performance consumption of Redirect Server.
Description of the drawings
Fig. 1 shows a kind of high-speed packet disposal method flow diagram that the embodiment of the present invention one provides；
Fig. 2 shows caching system structure diagram in internet provided by Embodiment 2 of the present invention；
Fig. 3 shows a kind of high-speed packet disposal method flow diagram provided by Embodiment 2 of the present invention；
Fig. 4 shows a kind of high-speed packet disposal method flow diagram that the embodiment of the present invention three provides；
Fig. 5 shows user's black/white list mark schematic diagram provided by Embodiment 2 of the present invention；
Fig. 6 shows systemic presupposition packet parsing matched rule schematic diagram provided by Embodiment 2 of the present invention；
Fig. 7 shows a kind of high-speed packet disposal apparatus structure schematic diagram that the embodiment of the present invention four provides.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the technical solution in the present invention is carried out below
Clear, complete description, it is clear that described embodiment is part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are not on the premise of creative work is made, the institute that is obtained
There is other embodiment, belong to the scope of protection of the invention.
Embodiment one
The embodiment of the present invention one provides a kind of high-speed packet disposal method, as shown in Figure 1, this method includes：
S101, data message storage first address is mapped to user virtual address space by memory mapping function mmap；
S102, establishment and the one-to-one message receiving thread of network interface card receiving queue；
S103, the message receiving thread is started, poll receives the data message.
High-speed packet disposal method provided in an embodiment of the present invention, by virtually empty in operating system nucleus module and user
Between between establish default reception pattern so that directly communicate during the transceiving data file of user Virtual Space with network interface card, data
File need not be handled by operating system nucleus, improve the processing capacity of data file, in addition, passing through data file
User property and preset matching rule are filtered data file, and the cpu performance for effectively reducing Redirect Server disappears
Consumption.
Embodiment two
The embodiment of the present invention two provides high-speed packet disposal method and is applied in internet caching system shown in Fig. 2.Such as
Shown in Fig. 2, which includes user terminal, source station, Redirect Server and caching server zone.During work, mutually
User terminal initiates the request to netting outer resource in networked domain；The request is by DPI (Deep Packet Inspection, deep packet
Detection technique) light splitting be introduced into Redirect Server；Redirect Server receives and analyzes the request data package, and construction is corresponding
Http/302 redirection messages are sent to request user terminal in domain；After user terminal receives request redirection message, outer resource is netted
Request is directed into cache server, and user terminal initiates resource request to cache server again, if content is locally hit,
Cache server directly provides user service, and otherwise cache server can initiate back source request to source station, be provided after obtaining resource
User service, and local cache is carried out to receiving content resource, and local service is provided.
In the embodiment of the present invention two, intra domain user request message imported into Redirect Server after being divided by DPI, redirects
Server is completed message and is quickly received by configuring default reception pattern.
Include as shown in figure 3, the embodiment of the present invention two provides high-speed packet disposal method：
S301, data message storage first address is mapped to user virtual address space by memory mapping function mmap；
Specifically, in this step, Redirect Server network interface card opens promiscuous mode, for collecting the network after DPI light splitting
Data message.
Receiving thread opens nmap (Network Mapper, network internal storage mapping) operating mode after starting, by datagram
Text storage first address is mapped to user virtual address space by memory mapping function mmap, and the interior of user's space is stored in completion
Deposit mapping.
Nmap operating modes are managed using the more queue modes of network interface card, i.e. correspond in network interface card one of each receiving thread connects
Receive queue.Wherein, network interface card receiving queue number is determined according to network interface card model.Such as network interface card has 8 receiving queues, then the Working mould
There are 8 receiving threads under formula.
S302, establishment and the one-to-one message receiving thread of network interface card receiving queue；
In this step, according to the configuration information of system Intranet card receiving queue, create and corresponded with network interface card receiving queue
Message receiving thread.
Thread parameter corresponds to receiving queue/dev/netmap_fd [eth0, rx-0] equipment and describes handle.And set etc.
Continue event.In the present embodiment, can the receiving queue quantity that current network interface card is supported be checked by system shell-command.
S303, start the message receiving thread, the data message is received by way of poll.
In this step, using nmap kernel modules provide API (Application Programming Interface,
Application programming interface) POLL polls are carried out, realize collecting for data message.
Specific data message receive process are as follows：The buffer buffer that data message can map correspondence memory pond first is
Then DMA calls POLL_WAIT that network interface MAC is waited to receive data, is put into after receiving data in RXFIFO.DMA-engine will
Data copy is into corresponding netmap memory pools.Application process enters next step after receiving.
Network interface http_get messages reception condition and packet drop are checked by network statistics Tool validation.As a result of
Memory mapping and network card data bag directly arrive the mode of application process, it can be seen that not having from common network interface protocol stack statistics
Receive statistical information.
The characteristics of embodiment of the present invention supports more receiving queues using network interface card, it is multiple using thread, Mei Geying by starting
A receiving queue is corresponded to thread, is realized by way of the NET_RING of each receiving queue of poll inquiry.It receives
Data message is stored in an annular caching (NET_RING), and is realized data message is read by mmap modes.
The data message caught from a network interface card is distributed in multiple core cpus or multiple application threads, improves processing data packets
Ability.
Compared with the prior art, high-speed packet disposal method provided in an embodiment of the present invention, has the advantages that：
1) data message need not walk legacy protocol stack, be parsed layer by layer, User space can directly with network interface card receive ring and
Send ring interaction；Reduction system is called and the time of processing data message.
2) data message is received using data pool mode, after having data message arrival, one is directly taken out from data pool
Then data message is put into this data packet by a data packet, then the descriptor of data packet is put into reception ring.
3) data message in kernel is using nmap technology-mappeds to User space, and data message is when reaching User space, nothing
Data packet copy need to be carried out, reduces system data copy number.
Embodiment three
The high-speed packet disposal method that the embodiment of the present invention three provides is applied in internet caching system shown in Fig. 2.
The HTTP GET requests of user terminal introduce Redirect Server via light splitting, and Redirect Server parsing HTTP request message is right
HTTP request message is filtered, and reduces the cpu performance consumption of the service of redirection.
The embodiment of the present invention three provides a kind of high-speed packet disposal method, as shown in figure 4, this method includes：
S401, judge whether the user property of data message belongs to subscriber blacklist, the corresponding number of filtering subscriber blacklist
According to message；
Wherein, basis for estimation can include the IP address for the user terminal that sends datagram, sending method of URL etc..This reality
Example is applied to illustrate using user terminal IP address as basis for estimation.
Specifically, system can configure one group of user's white list and subscriber blacklist according to user terminal IP address.Wherein, use
Family blacklist includes user terminal IP and is located at data message in blacklist preset IP address section, in the present embodiment, to the black name of user
Single corresponding data message request is not handled, i.e., filters out the corresponding data message of subscriber blacklist.
User's white list includes user terminal IP and is located at data message in white list preset IP address section, in the present embodiment,
The request of user's white list corresponding data message is forwarded to.The white name of user is higher than to the processing priority of subscriber blacklist
It is single.When user terminal IP is not admitted to subscriber blacklist and user's white list, gives tacit consent to it and belong to user's white list, it is necessary to handle this
The corresponding data messages of user terminal IP.
In a kind of preferable embodiment, judge whether the user property belongs to subscriber blacklist and include：
When user terminal IP address is located in blacklist preset IP address section, mark user property is subscriber blacklist.
In addition, user's white list can also be marked in this step.IP is preset when user terminal IP address is located at white list
When in address field, mark user property is user's white list.
As shown in figure 5, particular user black/white list mark include User IP initial address, User IP end address and
Flag fields.Wherein, User IP initial address and User IP end address form preset IP address section.
In an example, the record of flag=1 is configured in client_host_ip_list tables, is user terminal IP
Blacklist records, and during memory index data area is loaded into, is converted to integer number.To the dot divided of user terminal IP
It is converted, is compared whether in the range of subscriber blacklist, if in the range of subscriber blacklist, return to error code
NOT_MATCH_CLIENTIP_DENY.System will filter out the corresponding data message of the user's attribute.
In another example, the record of flag=0 is configured in client_host_ip_list tables, is user terminal
Whether IP white list unirecords during memory index data area is loaded into, is converted to integer number, compares white in user
In the range of list, if not in the range of user's white list, error code NOT_MATCH_CLIENTIP_ALLOW is returned to.
S402, filtering mismatch the data message of systemic presupposition packet parsing matched rule；
Wherein, the systemic presupposition packet parsing matched rule includes：It is 80 that protocol type, which belongs to TCP and destination interface,
Http messages are matched data message.
As shown in fig. 6, systemic presupposition packet parsing matched rule includes：It is 80 that protocol type, which belongs to TCP and destination interface,
Data message belong to http messages, non-http messages then filter out, and do not enter parsing and decision-making module.In filtering rule
offset[0:3]=0x474554 represents " GET " three characters, and the data message that condition is not satisfied is filtered out, further subtracted
Less and optimize data message amount.
The step main filtration HTTTP-GET request messages, such as：" GET/index.phpHTTP/1.1 " is represented：1) ask
Method is GET request；2) URL information：/index.php.
S403, filtering mismatch the data message of systemic presupposition hypertext transfer protocol http matched rules.
Wherein, the systemic presupposition http matched rules include：Host fields match rule, uniform resource identifier URI
Fields match rule and suffix type sets match rule；
This step specifically includes：
Redirect Server travels through all subscriber blacklists and user's white list, first, filtering suffix be not belonging to it is described after
Sew the data message of type set matched rule, so as to filter out most of unrelated http request.Secondly, domain name and institute are filtered
State the unmatched data message of host fields match rule；Finally, filter URI and the URI fields match rule is unmatched
Data message.
By above step, by the white black/white list of user and systemic presupposition matched rule logging data library module, reading has
Configuration rule is imitated, and creates index data area, constructs corresponding concordance list.If tables of data success is imported, by index data
Area is directed toward packet filtering buffering area, and user's receiving thread carries out rule match when high-speed message is received and handled, meets filter condition
Message then into decision-making process, otherwise discard processing.
Example IV
The embodiment of the present invention four provides a kind of high-speed packet disposal device 7, as shown in fig. 7, the device 7 includes：
Receiving module 71, for receiving data message according to default reception pattern, so that user's space and network interface card directly pass
Transmission of data message；
Determining module 72, for determining the user property of the data message；
Processing module 73 filters the number for the user property according to the data message and systemic presupposition matched rule
According to message.
Further, the receiving module 71 includes：
Mapping block 711 is mapped to user's void for data message to be stored first address by memory mapping function mmap
Intend address space；
Creation module 712, for creating and the one-to-one message receiving thread of network interface card receiving queue；
Poll receiving module 713, for starting the message receiving thread, poll receives the data message.
The processing module 73 includes：
First filtering module 731 for judging whether the user property belongs to subscriber blacklist, filters subscriber blacklist
Corresponding data message；
Second filtering module 732, for filtering the data message for mismatching systemic presupposition packet parsing matched rule；
3rd filtering module 733, for filtering the number for mismatching systemic presupposition hypertext transfer protocol http matched rules
According to message.
Embodiment five
The embodiment of the present invention five provides a kind of high-speed packet disposal system, including any high-speed message in example IV
Processing unit.
It will be understood by those skilled in the art that it can realize these structure charts and/or block diagram with computer program instructions
And/or the combination of each frame and these structure charts and/or the block diagram in block diagram and/or flow chart in flow chart.It can incite somebody to action
These computer program instructions are supplied to the processor of programmable data processing method to generate machine, so as to pass through programmable number
It is performed to instruct according to the processor of processing method and creates the frame or more for being used to implement structure chart and/or block diagram and/or flow chart
The method specified in a frame.
It should be noted that：Each embodiment in this specification is described by the way of progressive, each embodiment weight
Point explanation is all difference from other examples, and just to refer each other for identical similar part between each embodiment.
Although the preferred embodiment of the embodiment of the present invention has been described, those skilled in the art once know base
This creative concept can then make these embodiments other change and modification.So appended claims are intended to be construed to
Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
Detailed Jie has been carried out to FAQ generation methods, apparatus and system to a kind of common question and answer provided by the present invention above
It continues, specific case used herein is set forth the principle of the present invention and embodiment, and the explanation of above example is only
It is the method and its core concept for being used to help understand the present invention；Meanwhile for those of ordinary skill in the art, according to this hair
Bright thought, there will be changes in specific embodiments and applications, in conclusion this specification content should not manage
It solves as limitation of the present invention.
Claims (10)
1. a kind of message processing method, which is characterized in that including：
Data message storage first address is mapped to user virtual address space by memory mapping function mmap；
It creates and the one-to-one message receiving thread of network interface card receiving queue；
Start the message receiving thread, the data message is received by way of poll.
2. according to the method described in claim 1, it is characterized in that, the method further includes：
Determine the user property of the data message；
The data message is filtered according to the user property of the data message and systemic presupposition matched rule.
3. according to the method described in claim 1, it is characterized in that, the user property includes belonging to blacklist and be not belonging to black
List, the systemic presupposition matched rule include systemic presupposition packet parsing matched rule and systemic presupposition hypertext transfer protocol
Http matched rules；
It is described to be included according to the user property and systemic presupposition matched rule of the data message filtering data message：
Judge whether the user property belongs to subscriber blacklist, the corresponding data message of filtering subscriber blacklist；
Filtering mismatches the data message of systemic presupposition packet parsing matched rule；
Filtering mismatches the data message of systemic presupposition hypertext transfer protocol http matched rules.
4. according to the method described in claim 3, it is characterized in that, described judge whether the user property belongs to the black name of user
Singly include：
When user terminal IP address is located in preset IP address section, mark user property is subscriber blacklist.
5. according to the method described in claim 3, it is characterized in that, the systemic presupposition packet parsing matched rule includes：Association
It is matched data message that view type, which belongs to the http messages that TCP and destination interface are 80,.
6. according to the method described in claim 3, it is characterized in that, the systemic presupposition http matched rules include：Host words
Section matched rule, uniform resource identifier URI fields match rule and suffix type sets match rule；
The data message of the filtering mismatch system http matched rules includes：
Filtering suffix is not belonging to the data message of the suffix type sets match rule；
Filter domain name and the unmatched data message of host fields match rule；
Filter URI and the unmatched data message of URI fields match rule.
7. a kind of high-speed packet disposal device, which is characterized in that including：
Mapping block is mapped to user's virtual address sky for data message to be stored first address by memory mapping function mmap
Between；
Creation module, for creating and the one-to-one message receiving thread of network interface card receiving queue；
Poll receiving module for starting the message receiving thread, receives the data message by way of poll.
8. device according to claim 7, which is characterized in that further include：
Determining module, for determining the user property of the data message；
Processing module filters the datagram for the user property according to the data message and systemic presupposition matched rule
Text.
9. device according to claim 7, which is characterized in that the user property includes belonging to blacklist and be not belonging to black
List, the systemic presupposition matched rule include systemic presupposition packet parsing matched rule and systemic presupposition hypertext transfer protocol
Http matched rules；
The processing module includes：
First filtering module, for judging whether the user property belongs to subscriber blacklist, filtering subscriber blacklist is corresponding
Data message；
Second filtering module, for filtering the data message for mismatching systemic presupposition packet parsing matched rule；
3rd filtering module, for filtering the data message for mismatching systemic presupposition hypertext transfer protocol http matched rules.
10. a kind of high-speed packet disposal system, which is characterized in that including any high-speed packet disposals of claim 7-9
Device.
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| CN112165537A (en) * | 2020-09-17 | 2021-01-01 | 广州锦行网络科技有限公司 | Virtual IP method for ping reply |
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