WO2014059829A1

WO2014059829A1 - Method and device for processing mac frame data of ethernet

Info

Publication number: WO2014059829A1
Application number: PCT/CN2013/082491
Authority: WO
Inventors: 朱惠文; 陈思思
Original assignee: 中兴通讯股份有限公司
Priority date: 2012-10-16
Filing date: 2013-08-28
Publication date: 2014-04-24
Also published as: CN103731360A; CN103731360B

Abstract

Disclosed are a method and device for processing MAC frame data of Ethernet. The method comprises: receiving different service types of MAC frames; in accordance with a preset length, respectively dividing each service type of MAC frame into several data blocks, wherein each data block contains a complete MAC frame or/and a partial MAC frame; and within each system cycle, performing MAC frame data detection on the data blocks corresponding to different service types in accordance with a preset order, and storing the detection result in a corresponding storage area, so as to solve the problem that an MAC layer processing circuit of the current Ethernet device is low in transmission rate, can only support a single service or a fixed service, but cannot meet the development demand of the Ethernet device.

Description

TECHNICAL FIELD The present invention relates to the field of communications technologies, and in particular, to an Ethernet MAC frame data processing method and apparatus. BACKGROUND OF THE INVENTION Since the beginning of the 21st century, the communications industry has entered a period of rapid development, and broadband Internet has entered all aspects of life, and the requirements for network speed are also increasing. With the release of the IEEE P802.3ba standard, high-speed Ethernet has become the development direction of the current network. Currently, current Ethernet data processing technologies have the following disadvantages:

1) When a variety of services are mixed in the Medium MAC Address (Media Access Control) data stream, multiple processing channels are required, and the resource overhead is large;

2) After determining the current business processing mode, there is little room for real-time business switching or business switching. It can be seen that the current data transmission rate of the MAC layer processing circuit of the Ethernet device is small, and only supports single service or fixed service, which cannot meet the requirements of the development of the Ethernet device. SUMMARY OF THE INVENTION Embodiments of the present invention provide an Ethernet MAC frame data processing method and apparatus, which are used to solve the problem that a data transmission rate of a MAC layer processing circuit of an Ethernet device in the prior art is small, and can only support a single service or a fixed service. The problem. An embodiment of the present invention provides a method for processing an Ethernet MAC frame data, including: receiving a MAC frame of a different service type; and dividing, according to a preset length, a received MAC frame of each service type into a plurality of data blocks, where Each data block includes a complete MAC frame or/and a partial MAC frame; in each system cycle, MAC frame data is detected for data blocks corresponding to different service types in a preset order, and the detection result is stored in the corresponding storage. region. An embodiment of the present invention provides an Ethernet MAC frame data processing apparatus, including: a receiving module, configured to receive MAC frames of different service types; and a reconstruction module, configured to receive each service type according to a preset length The MAC frames are respectively divided into a plurality of data blocks, wherein each data block includes a complete MAC frame or/and a partial MAC frame; and the detecting module is configured to, according to a preset sequence, data corresponding to different service types in each system cycle. The block performs MAC frame data detection, and stores the detection result in a corresponding storage area. In the embodiment of the present invention, MAC frames of different types of services received in a system period are respectively divided into data blocks of the same size, and then MAC frames of data blocks corresponding to different service types are performed in a preset sequence in each system cycle. The data is detected, so that the embodiment of the present invention only needs to perform MAC frame data detection on data blocks of the same length, and does not need to separately perform MAC frame data detection on data of different lengths according to the transmission rate of different types of services. In this way, the MAC frame of the different types of services with different data transmission rates can be detected through a MAC frame data detection path, so that the embodiment of the present invention can be implemented on the basis of lower hardware configuration, and the processing resource overhead is reduced. Moreover, it can be applied to the case where MAC frames of multiple service types are transmitted in parallel at high speed, and can also handle the case of low-speed transmission of MAC frames of a single service type, and can handle different transmission rates of MAC frames of multiple service types. Therefore, it has good scalability, can meet the ever-increasing data transmission rate requirements and the ever-increasing MAC frame data processing requirements of the service category, and can be applied to various communication devices having Ethernet MAC layer processing requirements. A wide range of applications. 1A is a service distribution of a time slot frame corresponding to a service with a data transmission rate of 100 Gb/s according to an embodiment of the present invention; FIG. 1B is a corresponding data transmission rate of 10 Gb/s according to an embodiment of the present invention; And the traffic distribution of the time slot frames of the hybrid service with the data transmission rate of 40 G/S; FIG. 1C is a corresponding data transmission rate of 10 Gb/s and a data transmission rate of 40 G/S in the embodiment of the present invention; Figure 1D shows the service distribution of time slot frames corresponding to 10 mixed services with a data transmission rate of 10 Gb/s in the embodiment of the present invention; FIG. 2 is an embodiment of the present invention; Flowchart of the MAC frame data processing method; and FIG. 3 is a flowchart of a MAC frame data processing apparatus according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS Embodiments of the present invention provide a method for processing MAC frame data by using time division multiplexing, which divides received MAC frames of different service types into data blocks of the same size, and then, in each system cycle, MAC frame data detection is performed on data blocks corresponding to different service types in a preset order, thereby achieving the purpose of being able to handle multiple types of services of different types and different data transmission rates of hybrid access. Preferred embodiments of the present invention will be specifically described below with reference to the accompanying drawings. The MAC frame data processing method provided by the embodiment of the present invention is as shown in FIG. 2 . Step 201: The receiving end receives MAC frames of different service types. The input interface of the MAC layer receives MAC frames of different service types, and can also receive MAC frames of the same service. In practical applications, when the received data enters the MAC layer, the receiving end processes the data into MAC frame data according to the relevant protocol corresponding to the service type of the received data. Step 202: The receiving end divides the received MAC frames of each service type into a plurality of data blocks according to a preset length, where each data block includes a complete MAC frame or/and a partial MAC frame. For example, the CGMII (100Gb/s MEDIA INDEPENDENT INTERFACE, Media Independent Interface) interface has a data bit width of 64 bits. The interface transmits or receives 64 bits of data in each external interface cycle, where the start of the MAC frame exists in the 64-bit data block. When the word is controlled, it must be stored in the first word of the data block. The data width of the XGMII (40Gb/s MEDIA INDEPENDENT INTERFACE) interface is 32 bits. The interface transmits or receives 32-bit data every system cycle (this clock is the clock of the external interface, not the system clock), and exists in the 32-bit data block. When the start control word of the MAC frame is, it must be stored in the first word of the data block. The preset length of the data block can be determined according to the maximum throughput and data processing amount of the input interface of the MAC layer. For example, if the maximum throughput of the input interface of the MAC layer is 100 Gb and the data processing capacity is 200 Mb, the preset length of the data block is 512 bits. It is also possible to determine the preset length of the data block by dividing the data transmission rate of the input interface of the MAC layer by the clock period of the data processing, for example, if the data transmission rate of the received service is 100 Gb/s, and the system is for one data. The clock period for the MAC frame data detection of the block is 200 MHz, and the preset length of the data block is 512 bits. Due to the large length of the MAC frame in the actual situation, the length of the MAC frame may be less than 64 bits, and may also be as long as 10K. Therefore, there may be a case where one MAC frame is divided into a plurality of data blocks, and a case where a plurality of MAC frames are included in one data block may occur. Any one data block may contain a complete MAC frame or/and a partial MAC frame, for example, one data block contains m complete MAC frames; or one data block contains m complete MAC frames and the last MAC frame contains the start a portion of the control word, wherein a portion of the last MAC frame containing the start control word is a partial MAC frame; or, a data block includes m complete MAC frames and a portion of the first MAC frame including an end control word, where A MAC frame contains the part of the end control word, that is, a partial MAC frame; or, one data block may contain m complete MAC frames, the first MAC frame contains the part of the end control word, and the last MAC frame contains the start a portion of the control word, wherein the first MAC frame includes a portion of the end control word, and the last MAC frame includes a portion of the start control word, both of which are partial MAC frames; the above m are positive integers greater than zero. Step 203: In each system cycle, the receiving end performs MAC frame data detection on the data blocks corresponding to different service types according to a preset sequence, and stores the detection result in the corresponding storage area. According to the maximum throughput weight of the data transmission amount of the MAC frame of each service type in one system period, the number of data blocks of each service type for performing MAC frame data detection in one system period can be respectively determined. Detection order. In practical applications, a data block that needs to perform MAC frame data detection in one system cycle may be defined as one slot frame. The number and order of the data blocks of each service type in each slot frame may be determined according to the maximum throughput weight of the data transmission amount of the MAC frame of each service type received by the MAC layer interface in one system period, that is, The number and order of data blocks of each service type in each slot frame may be determined according to the data transmission rate of the MAC frame of each service type. Each slot frame may be composed of a frame header, a frame tail, and n data blocks, where n is a positive integer, and each data block occupies one slot, that is, each data block occupies one clock cycle for the MAC frame. Data detection. The total time n clock cycles for performing MAC frame data detection for one slot frame is referred to as one system cycle. For example, if the data transmission rate of the MAC frame of the MAC layer input interface of the Ethernet is 100 Gb/s, then n is 10 (that is, one slot frame contains 10 slots), and each data block occupies one slot. When the MAC frame received in the current system cycle always corresponds to a service with a data transmission rate of 100 Gb/s, the service distribution in any one slot frame is as shown in FIG. 1A, and each data block occupies one time slot, including MAC frame data of the service of equal length. When several MAC frames received in the current system cycle correspond to hybrid services, and the data transmission rates of the services are 40 Gb/s and 10 Gb/s, respectively, in each slot frame, each data transmission rate is 40 Gb/s. The service has 4 data blocks, occupying 4 time slots (which can be consecutive or discontinuous four time slots), and each service with a data transmission rate of 10 Gb/s has one data block, occupying one time respectively. Gap. In the case of receiving the MAC frame of the hybrid service, the service distribution combination in the slot frame is more likely, including but not limited to the service distribution of two typical slot frames listed below: Service distribution of a slot frame As shown in FIG. 1B, the data block with the data transmission rate of 40 Gb/s and the data block of the service ₂ occupy the time slots 1 to 4 and the time slots 5 to 8, respectively, and the data of the service ₃ and the service ₄ with the data transmission rate of 10 Gb/ _s . The blocks occupy slot 9 and slot 10, respectively. Or, the service distribution of a time slot frame is as shown in FIG. 1C, the data block of the service with a data transmission rate of 40 Gb/s occupies the time slot 1~4, and the data transmission rate is 10 Gb/ _s service ₂ , service ₃ , service _4. The data blocks of Service ₅ , Service ₆ and Service ₇ occupy slots 5~10, respectively. When several MAC frames received in the current system cycle correspond to multiple services with a data transmission rate of 10 Gb/s, the service distribution in a time slot frame is as shown in FIG. 1D, and there are 10 different services, each service. One data block occupies one time slot each. If the number of services of the received MAC frame is small or the data transmission rate is low, the amount of data received by the input interface of the MAC layer in one system cycle does not reach the maximum throughput of the input interface. A data block occupies one time slot, and some time slots in the time slot frame may be rounded, that is, MAC frame data detection is not performed on any data block in a clock cycle corresponding to the time slots of these round spaces. For example, if the current system period only receives a MAC frame of a service with a data transmission rate of 10 Gb/s, the MAC frame of the service may be divided into data blocks of a preset length, and only one data block per system cycle. Perform MAC frame data detection, that is, in this case, each data block occupies one time slot in one time slot frame, and other time slots in the time slot frame are empty, that is, within one system cycle, only one clock cycle The time is to perform MAC frame data detection on one data block, and the MAC frame data detection operation is not performed in other clock cycles. In this way, the embodiment of the present invention divides the MAC frame of each service type into data blocks of a preset length, and always performs MAC frame data detection on the data block having a fixed preset length, so even if it is different The MAC frames of the services with different data transmission rates are received in the time period, and the processing of the MAC frame data can still be performed, thereby supporting the switching of services with different data transmission rates. Specifically, each data block is detected by using a time division multiplexing manner, and the detection result of each data block is stored in the corresponding storage area according to the service classification, including the following two steps:

1) extracting a complete MAC frame or/and a partial MAC frame by performing a lookup of a start control word and an end control word of a MAC frame for any one of the data blocks;

2) performing multiple character detection on the extracted complete MAC frame or / and part of the MAC frame, including: if a complete MAC frame or a partial MAC frame is extracted from the current data block, the complete

The MAC frame or the part of the MAC frame performs multiple character detection, and stores the detection result into the corresponding storage area according to the service type of the current data block; if multiple complete MAC frames or multiple partial MAC frames are extracted from the current data block Or, extracting at least one complete MAC frame and at least one partial MAC frame from the current data block, performing multiple character detection on each of the extracted complete MAC frames or/and partial MAC frames, respectively, according to the current The service type of the data block stores the detection results of each complete MAC frame or/and part of the MAC frame into their respective storage areas. For example, if two partial MAC frames are extracted from the current data block (ie, one MAC frame includes a portion of the end control word and another MAC frame includes a portion that starts the control word), and multiple character detections are respectively performed; or, A complete MAC frame and a partial MAC frame are extracted from the current data block, and multiple character detections are respectively performed; or, a complete MAC frame and two partial MAC frames are extracted from the current data block, and multiple characters are respectively performed. Detecting; or, extracting multiple complete MAC frames and one partial MAC frame from the current data block, and performing multiple character detection respectively; or extracting multiple complete MAC frames and two partial MAC frames from the current data block And perform multiple character detection separately. In the above two steps, the detection result of the complete MAC frame is stored in the corresponding MAC frame data detection result storage address, and the detection result of each part of the MAC frame belonging to the same MAC frame is stored as a complete detection result of the complete MAC frame. Enter the same MAC frame data detection result storage address as the complete detection result of the same MAC frame. In a practical application, a buffer may be configured for each service to record the detection result of the corresponding MAC frame, where a complete MAC frame is divided into multiple partial MAC frames, and each partial MAC frame is located. When different data blocks are used, the detection results of the MAC frames of each part are sequentially stored in the same MAC frame data detection result storage address in the detection process, and the sum of the detection results of the respective partial MAC frames is used as the complete MAC frame. The complete detection result, only when the detection result in the storage address of the MAC frame data detection result is a complete detection result, the receiving end parses the complete MAC frame, and outputs the parsed MAC frame and the corresponding complete detection result. . In the embodiment of the present invention, performing multiple character detection on a complete MAC frame or/and a partial MAC frame includes: frame interval detection, preamble detection, source address detection, destination address detection, label detection, CRC (Cyclic Redundancy Check, loop) Redundancy check code) detection, frame type detection, and frame length detection. The frame interval is detected by detecting the interval byte between the start control word of the current MAC frame and the end control word of the previous MAC frame, and recording the length of the detected interval byte. The preamble detection is: detecting whether the preamble byte of the current MAC frame is incorrect. The source address is detected as: detecting the source address byte of the current MAC frame, identifying and recording the source address. The destination address is detected as: The destination address byte of each frame is detected, the destination address is identified and recorded, and the destination address type is determined. The tag is detected as: The tag byte of the frame containing the tag is detected, and the tag is identified. The frame length is detected as: Calculate the actual frame length and determine whether the frame long byte is correct.

The CRC is detected as: Performing a cyclic redundancy check on the data of the DA byte of the frame to the FCS byte to determine whether the frame has a CRC error. The frame type detection is: detecting the frame type byte and determining the type of the frame. Step 204: The receiving end has a complete detection result of the MAC frame in the storage area corresponding to the detected data block, and parses the corresponding MAC frame according to the complete detection result of the obtained MAC frame, and outputs the MAC frame. Complete test result output. For the complete MAC frame, the detection result in the storage address of the corresponding MAC frame data detection result is directly obtained, and the MAC frame is parsed and output, and is output as a complete detection result of the complete MAC frame. For a partial MAC frame, after the detection result of the current partial MAC frame is stored in the corresponding MAC frame data detection result storage address, the receiving end stores the detection result belonging to the same MAC frame in the same MAC frame data detection result storage address, Therefore, after the detection result of each partial MAC frame belonging to the same MAC frame is stored in the same MAC frame data detection result storage address, the same MAC frame is parsed according to the stored content in the MAC frame data detection result storage address. After outputting, the stored content in the MAC frame data detection result storage address is output as a complete detection result of the same MAC frame. In addition, the processing of the MAC frame in step 204 specifically includes: if the complete detection result of any one MAC frame indicates that the arbitrary one MAC frame passes multiple character detection, according to the complete detection result of the any one MAC frame and the user configuration Transparently transmitting, regenerating, or filtering any MAC frame; if the complete detection result of any one MAC frame indicates that the arbitrary one MAC frame does not pass at least one character detection, according to the complete detection result of the any one MAC frame and the user configuration modification or Discard at least one MAC frame. The specific operations of transparently transmitting, modifying, regenerating, filtering, capturing, or discarding the MAC frame are as follows: Transparent transmission means that the input data in the MAC frame is not changed, and is directly output; Modifying refers to changing certain fields of the MAC frame. The value is then output; the regeneration refers to regenerating the fields of the MAC frame to form a new MAC frame output; filtering refers to filtering out the MAC frame that meets the filtering condition according to the detection result of the source address, the destination address, the label, and the frame type. The detection result of the output source address, the destination address, the label, and the frame type has no error MAC frame; the acquisition refers to extracting the MAC frame conforming to the capture condition from the data stream and providing the user with the read according to the user configuration and the complete detection result. Discarding refers to discarding MAC frames that meet the discarding criteria based on user configuration and complete detection results, such as MAC frames containing errors. The following takes the data transmission rate of the Ethernet MAC layer input interface as 100 Gb/s as an example. It describes in detail how to record each data block in the slot frame according to the service distribution in the slot frame in the current system period. The detection result is stored in the corresponding storage area. If the current slot frame contains only one service with a data transmission rate of 100 Gb/s, the detection result of any one of the data blocks in the slot frame and the MAC frame parsed according to the complete detection result may be stored in any one of the slots. In the storage area. If the current slot frame contains a service with a data transmission rate of 40 G/s and a service with a data transmission rate of 10 G/s, the data transmission rate may be any data block corresponding to the service of 40 G/S. The detection result and the MAC frame parsed according to the complete detection result are stored in any one of the storage areas corresponding to the service type, and the detection result of the data block of the service with multiple data transmission rates of 10 G/s is analyzed according to the complete detection result. The subsequent MAC frames are respectively stored in the corresponding storage areas according to the corresponding service types. If the current slot frame includes multiple services with a data transmission rate of 10 Gb/s, the detection result of the time slot corresponding to the service with multiple data transmission rates of 10 G/s and the MAC frame parsed according to the complete detection result are The corresponding service types are respectively stored in the corresponding storage areas. After a time slot frame is processed, if there is a parsed MAC frame, all the parsed MAC frames can be combined into one data output, fed back to the transmitting end, and all the detected detection results are output for the user. Query the performance of the MAC frame transmitted here. Based on the foregoing technical solution, in an embodiment of the present invention, an Ethernet MAC frame data processing apparatus is configured as shown in FIG. 3, and includes: a receiving module 301, configured to receive MAC frames of different service types; and a reconstruction module 302, configured The MAC frames of each type of service received are respectively divided into a plurality of data blocks according to a preset length, wherein each data block includes a complete MAC frame or/and a partial MAC frame; and the detecting module 303 is in each system cycle. The MAC frame data is detected in the data block corresponding to the different service types according to the preset sequence, and the detection result is stored in the corresponding storage area; the parsing module 304 is set to exist in the storage area corresponding to the detected data block. The complete detection result of the MAC frame is obtained by parsing the corresponding MAC frame according to the complete detection result of the obtained MAC frame, and outputting the complete detection result of the MAC frame. In the device designed by the embodiment of the present invention, the storage area corresponding to each type of service may be a memory. Since the device designed by the embodiment of the present invention always performs MAC frame data detection processing on a data block having a preset length, if the service type or data transmission rate of the received MAC frame is changed, the device can still perform data processing on the MAC frame. Therefore, the device designed by the embodiment of the present invention can support MAC frame data processing of different transmission rates and different service types, and can support switching between services of different data transmission rates, thereby saving hardware resources and having a wide application range. Those skilled in the art can understand all or part of the steps in the foregoing embodiments by using an FPGA (Field-Programmable Gate Array) or an ASIC (Application Specific Integrated Circuit). achieve. In summary, in the embodiment of the present invention, the receiving end divides the MAC frames of different types of services received in one system period into data blocks of the same size, and then differently according to a preset sequence in each system cycle. The data block corresponding to the service type performs the MAC frame data detection, so that the embodiment of the present invention only needs to perform MAC frame data detection on the data block of the same length, and does not need to separately perform MAC for different lengths of data according to the transmission rate of different types of services. Frame data detection. In this way, the MAC frame of the different types of services having different data transmission rates can be detected through a MAC frame data detection path, so that the embodiment of the present invention can be implemented on the basis of lower hardware configuration, and the processing resource overhead is reduced. Moreover, it can be applied to the case where MAC frames of multiple service types are transmitted in parallel at high speed, and can also handle the case of low-speed transmission of MAC frames of a single service type, and can handle different transmission rates of MAC frames of multiple service types. Therefore, it has good scalability, can meet the ever-increasing data transmission rate requirements and the ever-increasing MAC frame data processing requirements of the service category, and can be applied to various communication devices having Ethernet MAC layer processing requirements. A wide range of applications. The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart. The computer program instructions may also be stored in a computer readable storage area operable in a particular manner by a computer or other programmable data processing device such that instructions stored in the computer readable storage area are generated Included is an article of manufacture of an instruction device that implements the functions specified in a block or blocks of a flow or a flow and/or block diagram of the flowchart. These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram. Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the art that, Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and It is apparent that those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, it is intended that the present invention cover the modifications and modifications of the embodiments of the invention.

Claims

Claims, an Ethernet medium access control MAC frame data processing method, including:

Receiving MAC frames of different service types;

The received MAC frames of each service type are respectively divided into a plurality of data blocks according to a preset length, where each data block includes a complete MAC frame or/and a partial MAC frame;

During each system cycle, the MAC frame data is detected for the data blocks corresponding to different service types in a preset order, and the detection result is stored in the corresponding storage area. The method according to claim 1, wherein the dividing the received MAC frames of each service type into a plurality of data blocks according to a preset length, comprising: according to the maximum throughput and data processing amount of the input interface Determining the preset length;

The received MAC frames of each service type are respectively divided into a plurality of data blocks according to the preset length. The method according to claim 1, wherein, in any one of the system cycles, MAC frame data detection is performed on data blocks corresponding to different service types according to a preset sequence, including:

Determining, according to the maximum throughput weight of the data transmission amount of the MAC frame of each service type in any one of the system periods, respectively, determining each service type that needs to perform MAC frame data detection in any one of the system periods. Number of data blocks and detection order;

The MAC frame data detection is performed on the data blocks that need to be parsed in any one of the system cycles in sequence according to the determined detection order of the data blocks. The method of claim 3, wherein the MAC frame data detection is performed on any one of the data blocks, and the detection result is stored in the corresponding storage area, including:

Extracting a complete MAC frame or/and a partial MAC frame from the start control word and the end control word of the MAC frame for any one of the data blocks;

If a complete MAC frame or a partial MAC frame is extracted from the current data block, performing multiple character detection on the one complete MAC frame or one partial MAC frame, and according to the service type of the current data block The detection result is stored in the corresponding storage area; If a plurality of complete MAC frames or a plurality of partial MAC frames are extracted from the current data block, or at least one complete MAC frame and at least one partial MAC frame are extracted from the current data block, respectively Extracting each complete MAC frame or/and part of the MAC frame for multiple character detection, and storing the detection results of each complete MAC frame or/and part of the MAC frame respectively according to the service type of the current data block Storage area;

The detection result of the complete MAC frame is stored in the corresponding MAC frame data detection result storage address, and the detection result of each part of the MAC frame belonging to the same MAC frame is stored in the same MAC as the complete detection result of the complete MAC frame. The frame data detection result storage address is a complete detection result of the same MAC frame. The method according to claim 4, wherein performing multiple character detection on the complete MAC frame or/and part of the MAC frame, including - performing frame interval detection on the complete MAC frame or/and part of the MAC frame, preamble detection, source Address detection, destination address detection, tag detection, cyclic redundancy check code CRC detection, frame type detection, and frame length detection. The method of claim 4 or 5, wherein after the detection result of the detected data block is stored in the corresponding storage area, the method further includes:

If the complete detection result of the MAC frame exists in the storage area corresponding to the detected data block, the corresponding MAC frame is parsed and output according to the complete detection result of the obtained MAC frame, and the MAC frame is complete. Test result output. The method of claim 6, wherein the parsing processing of the corresponding MAC frame according to the complete detection result of the obtained MAC frame comprises:

If the complete detection result of any one MAC frame indicates that the any one MAC frame passes the multiple character detection, the any one MAC frame is transparently transmitted, regenerated, or filtered according to the complete detection result of the any one MAC frame and the user configuration. ;

If the complete detection result of any one of the MAC frames indicates that the arbitrary one of the MAC frames does not pass at least one character detection, the at least one MAC frame is modified or discarded according to the complete detection result of the any one of the MAC frames and the user configuration. , an Ethernet medium access control MAC frame data processing device, comprising:

a receiving module, configured to receive MAC frames of different service types; The reconstruction module is configured to divide the received MAC frames of each service type into a plurality of data blocks according to a preset length, where each data block includes a complete MAC frame or/and a partial MAC frame;

The detecting module is configured to perform MAC frame data detection on the data blocks corresponding to different service types in a preset sequence in each system cycle, and store the detection result in the corresponding storage area. The apparatus according to claim 8, wherein the reconstruction module is further configured to: determine the preset length according to a maximum throughput of the input interface and a data processing amount; and each received according to the preset length A MAC frame of a service type is divided into a plurality of data blocks, respectively. The device of claim 9, wherein the detecting module is further configured to

The MAC frame data detection is performed on the data blocks that need to be parsed in any one of the system cycles in sequence according to the determined detection order of the data blocks. The device according to claim 10, wherein the detecting module is further configured to

If a complete MAC frame or a partial MAC frame is extracted from the current data block, performing multiple character detection on the one complete MAC frame or one partial MAC frame, and according to the service type of the current data block The detection result is stored in the corresponding storage area;

If a plurality of complete MAC frames or a plurality of partial MAC frames are extracted from the current data block, or at least one complete MAC frame and at least one partial MAC frame are extracted from the current data block, respectively Extracting each complete MAC frame or/and part of the MAC frame for multiple character detection, and storing the detection results of each complete MAC frame or/and part of the MAC frame respectively according to the service type of the current data block Storage area;

The detection result of the complete MAC frame is stored in the corresponding MAC frame data detection result storage address, and the detection result of each part of the MAC frame belonging to the same MAC frame is stored in the same MAC as the complete detection result of the complete MAC frame. The frame data detection result storage address is a complete detection result of the same MAC frame. The apparatus according to claim 11, wherein the plurality of character detections include: frame interval detection, preamble detection, source address detection, destination address detection, tag detection, cyclic redundancy check code CRC detection, and frame Type detection and frame length detection. The device according to claim 11 or 12, further comprising a parsing module, configured to:

If the complete detection result of the MAC frame exists in the storage area corresponding to the detected data block, the corresponding MAC frame is parsed and output according to the complete detection result of the obtained MAC frame, and the MAC frame is complete. Test result output. The device of claim 13, wherein the parsing module is further configured to:

If the complete detection result of any one of the MAC frames indicates that the any one of the MAC frames passes the multiple character detection, the any one MAC frame is transparently transmitted or regenerated according to the complete detection result of the any one of the MAC frames and the user configuration;

If the complete detection result of any one of the MAC frames indicates that the any one of the MAC frames is not detected by at least one character, the at least one MAC frame is modified, filtered, or discarded according to the complete detection result of the any one of the MAC frames and the user configuration. .