CN106850565B - A kind of network data transmission method of high speed - Google Patents
A kind of network data transmission method of high speed Download PDFInfo
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- CN106850565B CN106850565B CN201611245469.7A CN201611245469A CN106850565B CN 106850565 B CN106850565 B CN 106850565B CN 201611245469 A CN201611245469 A CN 201611245469A CN 106850565 B CN106850565 B CN 106850565B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/06—Notations for structuring of protocol data, e.g. abstract syntax notation one [ASN.1]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/544—Buffers; Shared memory; Pipes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/546—Message passing systems or structures, e.g. queues
-
- 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
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2209/00—Indexing scheme relating to G06F9/00
- G06F2209/54—Indexing scheme relating to G06F9/54
- G06F2209/548—Queue
Abstract
The invention discloses a kind of network data transmission methods of high speed, solve the problems, such as the lengthy and jumbled processing of User space application transceiver network data, based on Freescale DPAA hardware, a kind of DPAA service processes are designed, are responsible for data forwarding between Ethernet interface and User space application.Around Ethernet driving is called, cache management interface is called to operate DPAA hardware transceiver network data with management interface is lined up in User space；Network protocol stack is simplified using the hardware resource realization of network processing unit, accelerates data packet processing；DPAA service processes and User space Application share memory, mutual data pointer need to be only exchanged in message queue in sending and receiving data, realize the zero-copy of kernel state and User space data packet, the lengthy and jumbled processing such as IO copy when I O call when saving traditional linux system transceiver network data, the switching of kernel execution thread context, User space application access data buffer storage, one very thin very efficient layer is provided between User space application and hardware, improves network data processing speed.
Description
Technical field
The present invention relates to computer network data transmission fields, more particularly to a kind of realization of high speed network data transmission
Scheme.
Background technique
DPAA (Data Path Acceleration Architecture) is that the data of Freescale QorIQ platform add
Fast path architecture supports routing and managing related data stream process task in platform interior processing specific data stream.DPAA's
Main modular includes queue manager, cache manager and data frame supervisor.Queue manager is responsible for CPU management, and network connects
Data queue between mouth and hardware accelerator, manages data in a manner of queue, the priority with congestion management, queue
The function of scheduling and packet sequencing, order recovery；Cache manager mainly provides cache pool management function, and software distribution is suitably slow
It deposits and gives cache manager management；Data frame supervisor is a hardware frame accelerator, it support data message parsing, classification and
Distribute (PCD), data frame supervisor is the inlet and outlet of network data, and the functions such as load balancing and Qos are realized in help, and are gathered
Ethernet feature.
LTE base station equipment realizes the transmitting-receiving of network data, this traditional Linux by way of socket at present
Data transmit-receive mode is main to use in kernel state sending and receiving data packet when handling data packet, then gives kernel protocol stack processing.?
During being somebody's turn to do, system needs to call IO, in the switching of kernel execution thread context, user's space application access data buffer storage,
It needs to carry out IO copy etc., this series of operation can all reduce User space in various degree and apply the transmitting-receiving to network data fast
Rate.
Summary of the invention
The present invention is hard with the DPAA of Freescale in order to solve the problems, such as the lengthy and jumbled processing of User space application transceiver network data
Based on part, the method for having invented a kind of transmission of high speed network data designs a kind of DPAA service processes, be responsible for Ethernet interface and
Data forwarding between User space application realizes network data pack receiving and transmitting in User space, to reach the acceleration processing of network data
Purpose.
The technical solution adopted by the present invention are as follows:
A kind of network data transmission method of high speed, which is characterized in that including initialization, upstream data receives and lower line number
According to three processes of transmission, specifically includes the following steps:
Initialization:
Step 1: the initialization modules of DPAA service processes obtains configuration information, by data frame management interface configure with
The too parsing, classification of the IP address of network interface and data frame supervisor and distribution policy；Memory management module mentions for cache manager
For one piece of memory pool, and from memory pool dynamic acquisition part of cache, cache pool is formed；The configuration information includes that CPU is tied up
Determine information, the parsing of the IP address of Ethernet interface and data frame supervisor, classification and distribution policy；
Upstream data receives:
Step 2: after the Ethernet interface of data frame supervisor receives the network data of IP address identical as the network interface, lead to
Cache manager is crossed to cache to memory pool application one or more to store network data；Data frame supervisor according to parsing, point
Class and distribution policy are parsed and are classified to the network data stored in memory pool, and the network data transmitting that user is concerned about is arrived
Queue manager, and an enqueue request is initiated to queue manager；The enqueue request includes frame queue ID；
Step 3: after queue manager receives the enqueue request of data frame supervisor, user is closed according to frame queue ID
The network data of the heart is pushed to corresponding CPU by the software entrance of queue manager；
Step 4: after CPU finds corresponding DPAA service processes according to CPU binding information, the ether of DPAA service processes
Net transceiver interface calling lines up management interface receiving network data, and simplifies net for what network data was sent to DPAA service processes
Network protocol stack；
Step 5: simplifying network protocol stack and parse to the stem of network data, and utilizes DPAA platform hardware resource
The inspection of verification sum is carried out to the network data after parsing, obtains user data, user data is sent to DPAA service processes
User space application interface；
Step 6: user data is assembled into message by User space application interface, is sent out message by way of message queue
It is sent to User space application；
Downlink data is sent:
Step 7: User space, which is applied, to be cached from cache pool application to store user data to be sent, and is answered to User space
Request message is sent with interface；
Step 8: it after User space application interface receives the request message that User space application is sent, is extracted from cache pool
User data pointer is simultaneously sent to and simplifies network protocol stack；
Step 9: network protocol stack is simplified according to user data pointer and finds corresponding user data, utilizes DPAA platform
Hardware resource carry out verification sum calculating, by user data addition protocol header and verification and, complete the encapsulation of user data, will
User data pointer is sent to Ethernet transceiver interface；
Step 10: Ethernet transceiver interface finds the user data after corresponding encapsulation according to user data pointer, will seal
User data after dress is packaged into the data frame of DPAA requirement, is sent data frame by queue manager interface and software entrance
To queue manager；
Step 11: the data frame received is sent data frame supervisor by queue manager；
Step 12: data frame supervisor is sent data frame by Ethernet interface；
Step 13: the caching occupied in memory management module release cache pool.
Wherein, step 1 specifically includes the following steps:
(101) initialization module of DPAA service processes obtains configuration information, including CPU binding information, Ethernet interface
Parsing, classification and the distribution policy of IP address and data frame supervisor；
(102) initialization module calls data frame management interface, by the IP address of Ethernet interface and data frame supervisor
Parsing, classification and distribution policy are allocated to specified Ethernet interface；
(103) the Ethernet transceiver interface calling of DPAA service processes lines up management interface and caching management interface obtains column
The software entrance of team manager and cache manager；
(104) memory management module provides one piece of memory by cache management interface and software entrance for cache manager
Pond；And caching is formed from memory pool dynamic acquisition part of cache by cache management interface, software entrance and cache manager
Pond.
Wherein, User space is applied from cache pool application caching to store in user data to be sent in step 7, if slow
Deposit pond utilization rate be greater than preset cache quantity 70% when, memory management module by cache manager, cache manager it is soft
Part entrance and caching management interface fill cache pool from memory pool application caching automatically.
The present invention compared with prior art the advantages of are as follows:
(1) the different previous data transmit-receive modes of the present invention, the present invention call around Ethernet driving is called in User space
Cache management interface operates DPAA hardware with management interface is lined up, and realizes the transmitting-receiving operation of network data in User space, prevents
The lengthy and jumbled operation of kernel state and User space；
(2) network protocol stack is simplified using the hardware resource realization of network processing unit, with use conventional network protocols stack phase
Than the network protocol stack of this User space accelerates the performance of data packet processing, furthermore can also determine in protocol stack parsing encapsulation
Protocol header processed facilitates the distribution forwarding task for realizing data packet；
(3) it is interacted between DPAA service processes and User space application by message queue, due to DPAA service processes
With User space using shared drive, therefore DPAA service processes and User space are applied in sending and receiving data, it is only necessary in message
Mutual data pointer is exchanged in queue, without transmitting entire data buffer storage by message queue, realizes kernel state
With the zero-copy of User space data packet.
(4) by the above-mentioned means, DPAA service processes User space apply and hardware between provide it is one very thin very high
The layer of effect, to achieve the purpose that improve network data processing speed.
Detailed description of the invention
Fig. 1 is that User space of the present invention application obtains network data schematic diagram.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
Apply the attached drawing in example, the technical scheme in the embodiment of the application is clearly and completely described so that advantages of the present invention and
Feature can be easier to be readily appreciated by one skilled in the art, to make apparent specific boundary to protection scope of the present invention
It is fixed.
The hardware platform that present system uses is the multi-core processor B4860 of Freescale company, and operating system is
Linux.The present invention mainly simplifies the complex operations during tradition Linux data transmit-receive, accelerates framework using data path,
User space realizes that the transmitting-receiving of network data, parsing, the encapsulation of network protocol stack realize LTE base station software high speed transceiver network
The purpose of data.Embodiment is a DPAA service processes, operates in User space, is mainly responsible for Ethernet interface and LTE base station is soft
The forwarding of user face data (eGTP-U data) between part, to reach the acceleration processing of data between base station and core net.Under
The realization of face detailed description DPAA service processes: such as Fig. 1；
The initialization of DPAA service processes:
Step 1: the initialization modules of DPAA service processes obtains configuration information, by data frame management interface configure with
The too parsing, classification of the IP address of network interface and data frame supervisor and distribution policy；Memory management module mentions for cache manager
For one piece of memory pool, and from memory pool dynamic acquisition part of cache, cache pool is formed；The configuration information includes that CPU is tied up
Determine information, the parsing of the IP address of Ethernet interface and data frame supervisor, classification and distribution policy；Specifically includes the following steps:
(101) initialization module of DPAA service processes obtains configuration information, including CPU binding information, Ethernet interface
Parsing, classification and the distribution policy of IP address and data frame supervisor；
(102) initialization module calls data frame management interface, by the IP address of Ethernet interface and data frame supervisor
Parsing, classification and distribution policy are allocated to specified Ethernet interface；
(103) the Ethernet transceiver interface calling of DPAA service processes lines up management interface and caching management interface obtains column
The software entrance of team manager and cache manager；
(104) memory management module provides one piece of memory by cache management interface and software entrance for cache manager
Pond；And caching is formed from memory pool dynamic acquisition part of cache by cache management interface, software entrance and cache manager
Pond.
Upstream data receives:
Step 2: after the Ethernet interface of data frame supervisor receives the network data of IP address identical as the network interface, lead to
Cache manager is crossed to cache to memory pool application one or more to store network data；Data frame supervisor according to parsing, point
Class and distribution policy are parsed and are classified to the network data stored in memory pool, and the network data transmitting that user is concerned about is arrived
Queue manager, and an enqueue request is initiated to queue manager；The enqueue request includes frame queue ID；
Step 3: after queue manager receives the enqueue request of data frame supervisor, user is closed according to frame queue ID
The network data of the heart is pushed to corresponding CPU by the software entrance of queue manager；
Step 4: after CPU finds corresponding DPAA service processes according to CPU binding information, the ether of DPAA service processes
Net transceiver interface calling lines up management interface receiving network data, and simplifies net for what network data was sent to DPAA service processes
Network protocol stack；
Step 5: simplifying network protocol stack and parse to the stem of network data, utilizes DPAA platform hardware resource pair
Network data after parsing carries out the inspection of verification sum, obtains user data, user data is sent to DPAA service processes
User space application interface；
Step 6: user data is assembled into message by User space application interface, is sent out message by way of message queue
It is sent to User space application；
Downlink data is sent:
Step 7: User space, which is applied, to be cached from cache pool application to store user data to be sent, and is answered to User space
Request message is sent with interface；If cache pool utilization rate is greater than the 70% of preset cache quantity, memory management module is led to automatically
It crosses cache manager, the software entrance of cache manager and caching management interface and fills caching from memory pool application caching automatically
Pond.
Step 8: it after User space application interface receives the request message that User space application is sent, is extracted from cache pool
User data pointer is simultaneously sent to and simplifies protocol stack；
Step 9: network protocol stack is simplified according to user data pointer and finds corresponding user data, utilizes DPAA platform
Hardware resource carry out verification sum calculating, by user data addition protocol header and verification and, complete the encapsulation of user data, will
User data pointer after encapsulation is sent to Ethernet transceiver interface；
Step 10: Ethernet transceiver interface finds the user data after corresponding encapsulation according to user data pointer, will seal
User data after dress is packaged into the data frame of DPAA requirement, is sent data frame by queue manager interface and software entrance
To queue manager；
Step 11: the data frame received is sent data frame supervisor by queue manager；
Step 12: data frame supervisor is sent data frame by Ethernet interface；
Step 13: the caching occupied in memory management module release cache pool.
Data frame management interface, cache management interface and line up management interface respectively correspond data frame management, caching pipe
It manages and lines up to run in the driving of management.
Memory management module and cache manager are respectively that User space application interface and data frame supervisor provide memory
The operation such as release and application.Memory management module is responsible for the initialization of the memory pool managed cache manager, and by slow
Depositing manager interface is one cache pool of User space application Dynamic Maintenance.The dimension of DPAA service processes memory management module cache pool
Protection mechanism is as follows:
When memory management module starts, one piece of memory is initialized first and transfers to cache manager management, and passes through caching pipe
Manage interface obtain certain amount caching for User space using；Memory management module receives the real-time of User space application
Application, release message are applied for the caching of number by User space application distribution from cache pool, or are released by cache management interface
It puts to specify and is cached to memory pool；Memory management module makees following judgement: if cache pool when receiving real-time solicitation message
When utilization rate is greater than the 70% of preset cache quantity, memory management module fills cache pool from memory pool application caching automatically.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (3)
1. a kind of network data transmission method of high speed, which is characterized in that including initialization, upstream data receives and downlink data
Three processes are sent, specifically includes the following steps:
Initialization:
Step 1: the initialization module of DPAA service processes obtains configuration information, passes through data frame management interface configuration ethernet
The IP address of mouth and parsing, classification and the distribution policy of data frame supervisor；Memory management module provides one for cache manager
Block memory pool, and from memory pool dynamic acquisition part of cache, form cache pool；The configuration information includes CPU binding letter
Parsing, classification and the distribution policy of breath, the IP address of Ethernet interface and data frame supervisor；
Upstream data receives:
Step 2: after the Ethernet interface of data frame supervisor receives the network data of IP address identical as the network interface, by slow
Manager is deposited to cache to memory pool application one or more to store network data；Data frame supervisor according to parsing, classification and
Distribution policy is parsed and is classified to the network data stored in memory pool, and the network data transmitting that user is concerned about is to lining up
Manager, and an enqueue request is initiated to queue manager；The enqueue request includes frame queue ID；
Step 3: after queue manager receives the enqueue request of data frame supervisor, user is concerned about according to frame queue ID
Network data is pushed to corresponding CPU by the software entrance of queue manager；
Step 4: after CPU finds corresponding DPAA service processes according to CPU binding information, the Ethernet of DPAA service processes is received
Hair interface calling lines up management interface receiving network data, and the network of simplifying that network data is sent to DPAA service processes is assisted
Discuss stack；
Step 5: simplifying network protocol stack and parse to the stem of network data, and using DPAA platform hardware resource to solution
Network data after analysis carries out the inspection of verification sum, obtains user data, user data is sent to the use of DPAA service processes
Family state application interface；
Step 6: user data is assembled into message by User space application interface, is sent a message to by way of message queue
User space application；
Downlink data is sent:
Step 7: User space, which is applied, to be cached from cache pool application to store user data to be sent, and is connect to User space application
Mouth sends request message；
Step 8: after User space application interface receives the request message that User space application is sent, user is extracted from cache pool
Data pointer is simultaneously sent to and simplifies network protocol stack；
Step 9: network protocol stack is simplified according to user data pointer and finds corresponding user data, utilizes DPAA platform hardware
Resource carries out the calculating of verification sum, by user data addition protocol header and verifies and the encapsulation of user data is completed, by user
Data pointer is sent to Ethernet transceiver interface；
Step 10: Ethernet transceiver interface finds the user data after corresponding encapsulation according to user data pointer, after encapsulation
User data be packaged into DPAA requirement data frame, column are sent a dataframe to by queue manager interface and software entrance
Team's manager；
Step 11: the data frame received is sent data frame supervisor by queue manager；
Step 12: data frame supervisor is sent data frame by Ethernet interface；
Step 13: the caching occupied in memory management module release cache pool.
2. a kind of network data transmission method of high speed according to claim 1, which is characterized in that step 1 specifically includes
Following steps:
(101) initialization module of DPAA service processes obtains configuration information, the IP including CPU binding information, Ethernet interface
Parsing, classification and the distribution policy of location and data frame supervisor；
(102) initialization module call data frame management interface, by the parsing of the IP address of Ethernet interface and data frame supervisor,
Classification and distribution policy are allocated to specified Ethernet interface；
(103) the Ethernet transceiver interface calling of DPAA service processes lines up management interface and pipe is lined up in caching management interface acquisition
Manage the software entrance of device and cache manager；
(104) memory management module provides one piece of memory pool by cache management interface and software entrance for cache manager；And
By cache management interface, software entrance and cache manager from memory pool dynamic acquisition part of cache, cache pool is formed.
3. a kind of network data transmission method of high speed according to claim 1, which is characterized in that User space in step 7
It caches using from cache pool application to store in user data to be sent, if cache pool utilization rate is greater than preset cache quantity
When 70%, memory management module is by cache manager, the software entrance of cache manager and caching management interface automatically from interior
It deposits pond application caching and fills cache pool.
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