JP3256974B2 - Layer protocol processing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a layer protocol processing method, and more particularly to a layer protocol processing method in a communication technology in which an end-to-end communication protocol is formed on a layer in an information communication network and the protocol is processed by software. It is about.

[0002]

2. Description of the Related Art FIG. 2 shows a software module structure for processing a conventional protocol. FIG. 4A shows a protocol layer structure, in which a command or packet data 21 from the outside is sequentially processed from the uppermost layer N of the layer configuration 23, and after the lowermost layer processing, the line driver interface 24. Sent out.

The data received from the network 25 is subjected to a process reverse to that described above, and after the layer N process, is sent out as a response 22 to the outside.

FIG. 1B shows these layer protocols corresponding to the conventional software module configuration. Processing of each layer is performed independently by module (2
, 3N, 23N-1, 23N-2,...). For example, a command 21 input from the outside is captured and processed by the uppermost layer N module 23N.
The packet is temporarily stored in the packet buffer 24 corresponding to the layer N.

The next layer module 23.N-1 takes in the packet data from the buffer 24 and executes the processing of the layer N-1.

[0006] As described above, the packets processed up to the lowest layer module are sent to the line driver interface 2.
7 is sent to the device driver module 26 that drives the device 7, and is sent from the line driver to the network.

In the above-mentioned conventional layer protocol processing method, since each layer module is commonly used for data packets, any change or addition of a module affects all packet processing. And it is difficult to localize the influence. There is also a disadvantage that the network service is completely stopped during the change.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a layer protocol processing method capable of changing or adding a layer protocol processing with minimal localization without affecting other connections. is there.

[0009]

The layer protocol processing system according to the present invention comprises a plurality of layer processing object modules provided in an object space corresponding to each layer of the layer protocol processing, and an application module for each connection. Each of the application modules includes a designated pointer for calling each layer processing object module for the layer protocol processing of the corresponding connection, a work register used in each layer processing,
It includes a buffer for temporarily holding packet data between layers, a code area for instructing the operation of each application module , and the application module sends the designated pointer to the object module side.
The data is transmitted.

FIG. 1 is a diagram showing a software module configuration according to an embodiment of the present invention. As shown, the software modules include application modules (APL1 and APL2) 5 and 6 for each connection, and layer processing modules 1.1 to 1.5 and layer processing modules corresponding to each layer existing as an object module space 3. And a scheduler module 2 that performs exclusive control.

For example, when connection # 1 is requested, the corresponding application module 5 is called. Layer processing required by the connection designated by the pointer, port to an object module 3
A message 4 containing the contents of the interface is transmitted.

The corresponding layer processing object (layer processing 1.1 in this example) in the object module is selectively activated by the pointer indicated by the message 4 to operate. Work registers required during operation of the layer processing object are secured in the form of a data structure in the application module 5, and are used.

When the processing of the layer processing object is completed, the packet data to be sent to the next layer processing object is stored in the buffer area in the application module 5.

In this manner, the necessary layer processing is executed successively. It is the code of the text code area in the application module 5 that determines the sequence.

When a plurality of application modules use the same layer processing object in conflict with each other, the scheduler object module 2 performs exclusion control according to a predetermined exclusion rule in order to prevent this conflict state.

[0016]

As described above, according to the present invention, the connection is made an independent application module, and each layer processing module is arranged as an object in another space, so that the change or addition of the layer protocol processing affects the connection. There is an effect that it can be performed with minimal localization without giving

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a software module configuration of a layer protocol process according to an embodiment of the present invention.

FIG. 2 is a diagram showing a conventional layer protocol processing method.

[Explanation of symbols]

 1.1 to 1.5 Layer processing module 4 Message 5, 6 Application module

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G06F 13/00 H04L 29/06

Claims (1)

(57) [Claims] A plurality of layer processing object modules provided in an object space corresponding to each layer of the layer protocol processing and an application module for each connection are provided, and each of the application modules includes a corresponding connection module. A designated pointer that calls each layer processing object for layer protocol processing, a working register used in each layer processing,
It includes a buffer for temporarily holding packet data between layers, a code area for instructing the operation of each application module , and the application module sends the designated pointer to the object module side.
Layer protocol processing method is characterized in that so as to deliver the pointer.