CN202121599U - Equipment for obtaining TCP connection data with high speed - Google Patents

Abstract

The present utility model provides equipment for obtaining TCP connection data with high speed. A hardware network interface card is used for receiving messages and carrying out TCP connection management; a network interface card hardware is used for rearranging TCP disordering data without splicing data, adding information message heads for the messages and recording the TCP connection information; a driving software is used for transmitting the messages from a network interface card onboard memory into a host memory; and an API interface library is used for carrying out data format conversion. By adopting the equipment, the messages can be submitted to a host in real time, the conversion from the original message data to the TCP data format can be conveniently realized, the role of data splicing can be realized, and the TCP data can be obtained with high speed.

Description

A kind of equipment that is used for obtaining at a high speed TCP connection data

Technical field

The utility model relates to the network data processing field, is specifically related to a kind of equipment that TCP connects data that is used for obtaining at a high speed.

Background technology

The TCP Unloading Technology is to handle the TCP/ip network protocol stack in the host software to be cured in the network interface card hardware to realize, so that reduce the cpu of system load, increases the technology of network I/O bandwidth.The TCP uninstalling system generally comprises two parts function, and first is the management of TCP connection status, shows to safeguard that with the TCP connection each TCP connects from beginning, transfer of data, closing state.Second portion is the tcp data management, is used for resequencing the data of out of order TCP message, comes out to submit to main frame to the data extract of TCP transmission.

Generally in the TCP uninstalling system; Hardware generally uses a data buffer when carrying out the tcp data management, come out the data extract that each TCP connects; Accomplishing reordering of tcp data and splice with buffer, is that unit is submitted to host computer system then with the buffering area.

Application number 200680026247.4 discloses the method and system of a kind of transparent transmission control protocol (TCP) unloading, and the various aspects of said method comprise: in the network interface Card processor, collect the TCP section, but state information is not transferred to host computer system.The TCP section of collecting is buffered in the colligator.Colligator can check the network flow relevant with the TCP section of collecting in stream look-up table (FLT), to have inlet.When FLT expired, colligator can cut out current inlet, and network flow is assigned to available inlet.Information among the also renewable FLT of colligator.When the incident that stops the collection of TCP section took place, colligator can generate the TCP section of single polymerization based on the TCP section of collecting.Can the TCP section and the state information of polymerization be sent to main frame to handle.

Application number 03820350.2 discloses a kind of system and method for TCP unloading.On TEEC, receive input TCP and divide into groups, and handle at least a portion that said input divides into groups once, and needn't carry out any reorganization and/or repeating transmission by said TEEC by said TEEC.The said input of at least a portion TCP divides into groups can be buffered at least one inner elastomeric buffer of said TEEC.Said inner elastomeric buffer can comprise reception inner elastomeric buffer and/or send the inner elastomeric buffer.Therefore, the said input of at least a portion TCP divides into groups can be buffered in the said reception inner elastomeric buffer.The input of the said processing of at least a portion divides into groups can put in the part of a mainframe memory, so that handled by host-processor or CPU.In addition, DMA is sent in the part of said mainframe memory but the input TCP of the said processing of at least a portion divides into groups.

In the system that need handle in real time to tcp data; Main frame need in time be taken the data of TCP transmission, in general TCP uninstalling system, submits to main frame again after needing hardware to splice a certain amount of data; Though help improving system bandwidth, reduced the response speed of system.

Summary of the invention

The utility model purpose provides a kind of system and in time uploads main frame to tcp data, avoids tcp data in hardware, to splice.

A kind of equipment that is used for obtaining at a high speed TCP connection data comprises network interface card and software section,

Said network interface card comprises that partly special chip, plate carry internal memory and network interface;

Said software section comprises api interface library software and drive software.

First kind of optimal technical scheme of the utility model is: said special chip is the network interface card main control chip, through extracting the TCP link information behind the network interface reception TCP message, carries the TCP connection table in the internal memory according to TCP link information inquiry plate then.

Second kind of optimal technical scheme of the utility model is: inquiry TCP connects in the table process; If the message that newly connects; Just in connecting table, connect new list item of increase,, just delete connecting the list item that should connect in the table if close the message of connection to this; If the data message that has connected, the then current state of this connection of record in connecting list item.

The third optimal technical scheme of the utility model is: special chip is according to connecting the state that writes down in the list item, and it is out of order to judge whether this data message takes place, if do not have out of orderly, then directly is uploaded to main frame; If take place out of orderly, then put into chained list to message, wait for that follow-up message resequences, ordering is that unit uploads main frame with the message after accomplishing.

The 4th kind of optimal technical scheme of the utility model is: drive software carries internal memory to message from the network interface card plate and transfers to the host memory.

The 5th kind of optimal technical scheme of the utility model is: when application software reads tcp data through the api interface storehouse; Interface library software reads original message from host memory; Information header according to COM Continuation of Message; The location tcp data the original message data structure, converts the tcp data structure of application need to.

The utility model can in time be submitted to main frame to message, can conveniently realize the conversion of original message data to the tcp data form again, plays the effect of data splicing, and whole system can realize the tcp data that obtains at a high speed.

Description of drawings

Fig. 1 is the utility model system construction drawing

Embodiment

The present technique scheme is the equipment of a software and hardware one, hardware be with special chip for the network interface card that main devices designs, comprise network interface, special chip, plate carry internal memory and constitute.Software is driven by network interface card and application software api interface storehouse constitutes.

The function of the every part of system is following:

(1) network interface: network message Data Receiving network access card.

(2) special chip: the main control chip of network interface card, move all message processing logics.

(3) plate carries internal memory: the connection table that storage TCP connection management is used, temporary message.

(4) network interface card drives: the administration configuration network interface card, and for network interface card provides path to the transfer of data of main frame.

(5) api interface storehouse: connect the DLL of network interface card system and application software, the message format of submitting to network interface card in main frame converts the tcp data form that application software needs to.

The processing method and the process of this equipment are following:

(1) the hardware network interface card receives message.

Special chip extracts the TCP link information after receiving the TCP message through network interface from message, and carries in the internal memory to plate original message is temporary.

(2) the hardware network interface card carries out the TCP connection management.

Special chip is according to the TCP link information of message; The inquiry plate carries the TCP connection table in the internal memory, if the message that newly connects just connects new list item of increase to this in connecting table; If close the message of connection; Just connecting the list item deletion that should connect in the table, if the data message that has connected, the then current state of this connection of record in connecting list item.

(3) network interface card hardware carries out the rearrangement of the out of order data of TCP, but does not carry out data splicing.

To the tcp data message, special chip is according to connecting the state that writes down in the list item, and it is out of order to judge whether this data message takes place, if do not have out of orderly, then directly is uploaded to main frame; If take place out of orderly, then put into chained list to message, wait for that follow-up message resequences, ordering is that unit uploads main frame with the message after accomplishing.This sequencer procedure uses the message chained list, does not use the splicing buffer, does not carry out the splicing of tcp data.

(4) network interface card hardware adds information header to message, record TCP link information.

Network interface card increases a self-defining header structure before main frame is submitted message to before the encapsulation header of message, wherein preserve the information that this TCP connects, and comprises connection status, the tcp data skew in message etc.

(5) drive software carries internal memory to message from the network interface card plate and is transferred to host memory.

(6) Data Format Transform is carried out in the api interface storehouse.

When application software read tcp data through the api interface storehouse, interface library software read original message from host memory, and according to the information header of COM Continuation of Message, the location tcp data the original message data structure, converts the tcp data structure of application need to.

The utility model uses in the network security private server of dawn production, has obtained good effect.

Claims (1)

1. one kind is used for obtaining at a high speed the equipment that tcp connects data, it is characterized in that: comprise the network interface card part,

Said network interface card comprises that partly special chip, plate carry internal memory and network interface;

Said special chip is the network interface card main control chip, through extracting the tcp link information behind the network interface reception tcp message, carries the tcp connection table in the internal memory according to tcp link information inquiry plate then.

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