CN1332529C - A method for controlling single-board user command execution by router host - Google Patents

Abstract

The invention discloses a method for a router host to control the execution of user commands on a single board. In the method, the router host system applies for a timer for each command issued by the user, and the timer is uniquely identified by a timer pointer assigned by the system, and Construct related structures, send commands and related information to the board; the board completes the processing of commands, constructs related structures, and sends information to the router host; the router host system searches for related structures based on the received information, and releases the timer and related structures , and output the command execution result. If the timer times out, the user is prompted that the corresponding board processing the corresponding command times out, and the timer and related structures are released. Using the method of the present invention enables the user to monitor the execution of the commands issued by the single board to the user through the timer, and solves the problem that in the prior art, the user can only know the command of the single board to the user through the information returned by the single board to the router host. of the implementation.

Description

A method for the router host to control single-board user command execution

technical field

The invention relates to the field of communication, more specifically to a method for a router host in the field of communication to control the execution of user commands on a single board.

Background technique

For a system including a router host and a single board, when the user sends a command to the single board through the router host, the router host just sends the command to the single board in the form of data. Regarding whether the single board receives the command, how to process it, and when The processing result of the command returned is unknown, and the execution result of the command can be fed back to the user only after receiving the processing result returned by the board. The single board in the system can be an encryption card, and the router host feeds back the execution result of the user command to the user according to the processing result of the encryption card. If the encryption card does not return the processing result, the router host cannot feed back the processing result of the command to the user.

This command processing mechanism can save system resources and can run normally in most cases, but it is easy to cause such problems: if the board does not receive the command, the board has an exception during the execution of the command, or the board If the feedback result of the command is lost, the user will always be in a waiting state, and cannot know the execution status of the command, thereby delaying the execution of other commands.

Contents of the invention

In view of this, the main purpose of the present invention is to provide a method for the router host to control the execution of user commands on a single board. Using this method enables the user to monitor the situation of the single board executing user commands, and avoids single boards not receiving commands. Unnecessary waiting for the user due to an abnormality in the process of executing a task on the board or loss of the feedback result of the board.

In order to achieve the above object, the technical solution of the present invention is specifically implemented as follows: a method for the execution of a router host control single board user command, characterized in that the method at least includes the following steps:

a. The router host system receives the command issued by the user to the single board, applies for and maintains a timer, and the timer is identified by a globally unique timer pointer;

b. constructing a user command timer structure comprising the above-mentioned timer pointer, the user command timer structure at least including the timer pointer, the attribute identification of the command and the slot number where the single board is located;

c. Construct a message frame header that includes the above-mentioned timer pointer, and send it to the single board together with the command data;

d. the single board completes the processing of the command, constructs the message frame header comprising the timer pointer issued above, and sends it to the router host system together with the processing result of the command by the single board;

e. The router host system receives the data returned by the single board, searches for the corresponding user command timer structure according to the timer pointer in the message frame header, releases the timer and user command timer structure, and outputs the command execution result;

f. If the timer overtime occurs, search the user command timer structure according to the timer pointer, release the timer and the user command timer structure, and prompt the user for a timeout error.

The user command timer structure in the step b further includes a structure pointer pointing to the previous user command timer of the single board, and according to the structure pointer, the user command timer structure queue of the singly linked list distinguished by the single board is constructed, and the The user command timer structure in step e is searched in the user command timer structure queue of the single board according to the timer pointer in the message frame header.

The user command timer structure in the step b further includes a structure pointer pointing to the next user command timer of the single board, and according to the structure pointer, the user command timer structure queue of the singly linked list distinguished by the single board is constructed, and the The user command timer structure in step e is searched in the user command timer structure queue of the single board according to the timer pointer in the message frame header.

The user command timer structure in the step b further includes a structure pointer pointing to the previous user command timer of the single board and a structure pointer pointing to the next user command timer of the single board, and according to the structure pointer structure, the single board is distinguished The user command timer structure queue of the doubly linked list, the user command timer structure in the step e searches in the user command timer structure queue of the single board according to the timer pointer in the message frame header.

The maintenance of a timer by the router host system is realized by constructing a timer structure, releasing the timer means releasing the corresponding timer structure, the timer structure at least includes a timer pointer and a function pointer to be called after the timer expires , function input parameters.

The step a further includes, if the router host system fails to apply for the timer, prompting the user that the application timer is wrong, and terminating the execution of the command.

The message frame header described in step c at least includes a message type, a message attribute and a timer pointer, wherein the message type is any type of command or data type, and the message attribute is any one of command attribute or data attribute.

Said step e further includes, if searching for the user command timer structure is unsuccessful, prompting the user that the single board fails to execute the command, and ending the process.

The step f further includes, if searching the user command timer structure according to the timer pointer fails, prompting the user for a system error and ending the process.

The prompting user timeout error described in step f comprises finding out the single board corresponding to the command timer according to the slot number of the single board in the user command timer structure, finding out the overtime user command according to the attribute identification of the command, and prompting the user The board executed the command timed out.

The method of the present invention is that the router host system applies for a timer when the router host receives a command issued by the user, and the timer is uniquely identified by the timer pointer assigned by the system, and simultaneously constructs a user command timer structure and a user command timer structure Queue, generate command data and message frame header according to user commands, insert the timer pointer into the message frame header and send them to the board together; the board processes the commands issued by the user, and constructs a new message containing the issued timer pointer frame header, and send the processing result together with the message frame header to the router host; the router host system searches for the relevant user command timer structure according to the received timer pointer, releases the corresponding timer and user command timer structure, and sends The user outputs the result information of command execution. The router host system searches for the user command timer structure corresponding to the timeout timer, and determines the board and command corresponding to the command timer, prompts the user that the board executes the command timeout, and finally releases the timer and user command timer structure.

The method of the present invention prompts the user that an error occurs during the execution of the issued command through the timer timeout processing of the command, avoiding the user's indefinite wait, ensuring that the user can know the information of the single board in real time, so that the user can be in the master control status.

Description of drawings

Fig. 1 is a schematic diagram of a timer structure maintained by a router host;

Fig. 2 is the schematic diagram of the user command timer structure that does not comprise structure pointer among the present invention;

Fig. 3 is a schematic diagram of a user command timer structure including a structure pointer in the present invention;

Fig. 4 is the schematic diagram that forms the user order timer structure queue of doubly linked list;

Fig. 5 is a schematic diagram of a message frame header structure;

Fig. 6 is the flow chart of applying for a command timer according to a user's command when the router host system adopts a user command timer structure not including a structure pointer;

Fig. 7 is the flow chart of applying for a command timer according to a user's command when the router host system adopts a user command timer structure comprising a structure pointer;

Fig. 8 is a flow chart of the command processing result returned by the router host system processing the encryption card;

FIG. 9 is a flow chart of processing performed by the router host system for command timer timeout.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

A timer can be understood as an alarm clock, and setting a timer is equivalent to setting a ringing time for the alarm clock. When the time set by the timer elapses, the system will trigger an event, and use this event to wake up the execution of a specific task. Timers are used in many programs, and there are many types of timers, such as command timers and delay timers. The invention implements the control of the execution of the single-board user commands by the router host through the timer processing of the commands.

The single board described in the present invention may be an encryption card. The following uses the encryption card as an example to describe in detail how the router host controls the execution of user commands by the single board through the command timer.

The timer processing of the command by the router host includes the following aspects:

The router host system maintains a specific structure of the command timer, which is retrieved by a globally unique timer identifier (ulTimer). As shown in FIG. 1 , the timer structure stores information related to the command timer, including the command timer identifier (ulTimer) and related information such as function pointers and function input parameters that need to be called after the command timer expires.

In order to realize the communication between the router host and the encryption card, the router host system also needs to construct a user command timer structure as shown in Figure 2, which is used to save the timer and the timer requested by the user when sending each command. Various attribute information of the command. The user command timer structure includes the fields ulTimer, usAttribute and ulSlotID, where ulTimer is the identifier of the timer applied by the system; usAttribute is used to identify the attribute of the command related to the command timer; ulSlotID is used to identify the The slot number of the encryption card related to the timer is in one-to-one correspondence with the encryption card, which can uniquely identify an encryption card. This structure can also further include Prev and Next fields, and the user command timer structure after adding these two fields is shown in Figure 3, this structure can increase these two fields at the same time, also can only increase one of them, these two subfields The segments are all structure pointers, Prev points to the previous command timer of the encryption card, and Next points to the next command timer of the encryption card. If these two structure pointers are used at the same time, a queue of a doubly linked list can be formed. For the doubly linked list, see As shown in Fig. 4, correspondingly, a certain user command timer structure can be bidirectionally searched in the queue through these two structure pointers. These two structure pointers can also be used independently. Using any one of the structure pointers can make all user command timer structures related to an encryption card form a single-way linked list queue, which is similar to the double-linked list queue. When a user commands the timer structure, it searches forward or backward according to the structure pointer used to form the queue.

The router host system also needs to define a message frame header structure to realize the communication between the router host and the encryption card. Referring to Fig. 5, the message frame header structure includes message type, message attribute, ulTimer and other information. The message type includes command, data or other types; the message attribute includes command attribute, data attribute or other attribute. This message frame header is transmitted between the router host and the encryption card together with the user command data itself.

The router host system applies for a timer and processes it when it receives a command issued by the user to the encryption card. Among them, the router host system applies for a timer in the following situations:

1. When the user sends the first command to the encryption card through the router host, the router host system applies for a timer for the command, maintains a timer structure corresponding to this timer, and creates a user command timer structure, and the timer Stored in the user command timer structure along with various attributes of the command. The commands sent to the encryption card later use the same timer and the corresponding two structures.

2. For each command sent by the user to the encryption card through the router host, the router host system applies for a timer for the command, maintains a timer structure corresponding to this timer, and creates a user command timer structure, and the timer Stored in the user command timer structure along with various attributes of the command. If the created user command timer structure contains a structure pointer, all user command timer structures related to the encrypted card can be formed into a one-way or double-entry linked list queue according to the structure pointer. The advantage of establishing a queue is that it is convenient for query. If it is known that an encryption card is disabled by the user, all user command timer structures related to the encryption card can be released according to the established queue, so as to ensure that the encryption card will not prompt the user for commands after being disabled timeout information.

Refer to Figure 6 for the process of the router host applying for a timer and processing it. The router host system applies for a timer according to the command issued by the user, and then judges whether the application is successful. If it is successful, it assigns a command timer pointer. If the timer application fails , an error message will be prompted to the user and the execution of the command will be terminated.

After allocating the command timer pointer, the router host system uniformly allocates the ulTimer that identifies the command timer pointer, and the ulTimer can globally uniquely identify the timer; at the same time, set the ulSlotID field in the user command timer structure as the The slot number of the encryption card of the command, so that it can uniquely identify the encryption card related to the command; set the usAttribute field in the user command timer structure as the attribute value of the command issued by the user to indicate what the command is.

If a structure pointer can also be set in the user command timer structure, a queue of the user command timer structure can be formed according to the structure pointer, and the flow in this case is shown in FIG. 7 . If only a structure pointer Prev or Next is set, then the user command timer structure is added to the queue of the one-way linked list formed by all user command timer structures related to this encryption card by the structure pointer, if this Both structure pointers are set, then the user command timer structure is added to the queue with the original doubly linked list through these two structure pointers.

Finally, the router host system adds the ulTimer in the user command timer structure to the header of the message frame communicating with the encryption card, and sends it to the encryption card together with the user command data.

After the encryption card receives the user command issued by the router host, it processes the command. After the processing is completed, a new message frame header is constructed, which stores the ulTimer in the original message frame header, and sends it to the router host together with the processing result of the command by the encryption card.

Referring to Figure 8, the router host system processes the information returned by the encryption card and feeds back the processing result to the user. The specific processing flow is as follows:

The router host system receives the data returned by the encryption card, obtains ulTimer from the message frame header of the returned data, and searches for the corresponding user command timer structure according to the ulTimer. If the search fails, it means that the command timer has timed out, that is, the encryption card is in the designated The command has not been executed within the specified time, and the execution of the command by the encryption card has timed out, so the user is prompted that the execution of the command by the encryption card failed, and the processing ends.

If the corresponding user command timer structure is found, it means that the encryption card has completed the execution of the command within the specified time, and at this time it is considered that the encryption card has successfully executed the command. Therefore, first release the corresponding timer according to the command timer pointer in the ulTimer, and release the user command timer structure, and finally output the command execution result to the user.

If the timer of a certain command times out, it means that the execution of the command corresponding to the timer by the encryption card has timed out, that is, the encryption card does not return the command execution result within the specified time. At this time, it can be considered that the execution of the command by the encryption card has failed. Referring to Figure 9, the specific processing flow for the router host to command timer timeout is as follows:

First, search for the corresponding user command timer structure through the timer pointer of ulTimer. If the search fails, it will prompt the user for a system error and end the processing. Otherwise, according to the usAttribute and ulSlotID stored in the user command timer structure, respectively determine the encryption card and command corresponding to the timer, and prompt the user that the encryption card has timed out during the execution of the command, and finally release the corresponding timer and command. User command timer structure.

The application of the method of the present invention enables the user to monitor the execution of the commands sent by the encryption card to the user through the timer. After the user sends the command to the encryption card, if the encryption card is abnormal when processing the task and cannot respond to the user's command in time , the command timer applied for will time out, and the router host will process the timeout of the timer to prompt the user that the encryption card has an error in the process of executing the command issued by the user, which avoids the user's indefinite waiting and ensures the user The information of the encrypted card can be obtained in time.

Claims (10)

1, the method for a kind of host computer with router control veneer user command execution is characterized in that this method may further comprise the steps at least:

A. router host computer system receives the user to the order that veneer issues, and applies for and safeguard a timer, and this timer is by the timer pointer mark that the overall situation is unique;

B. structure comprises the user command timer construction of above-mentioned timer pointer, and this user command timer construction comprises the attribute-bit of timer pointer, order and the slot number at veneer place at least;

C. structure comprises the message frame head of above-mentioned timer pointer, sends to veneer with order data;

D. veneer is finished process of commands, and structure comprises the message frame head of the above-mentioned timer pointer that issues, and with veneer the process of commands result is sent to router host computer system;

E. router host computer system receives the data that veneer returns, and searches corresponding user command timer construction according to the timer pointer in the message frame head, release timer and user command timer construction, outputs command executing result;

If f. the timer generation is overtime, then search the user command timer construction, release timer and user command timer construction, prompting user time-out error according to the timer pointer.

2, method according to claim 1, it is characterized in that, user command timer construction among the described step b further comprises the structured fingers of the previous user command timer that points to veneer, according to the user command timer construction formation of this structured fingers structure with the single-track link table of veneer differentiation, the user command timer construction among the described step e is searched in the user command timer construction formation of this veneer according to the timer pointer in the message frame head.

3, method according to claim 1, it is characterized in that, user command timer construction among the described step b further comprises the structured fingers of a back user command timer that points to veneer, according to the user command timer construction formation of this structured fingers structure with the single-track link table of veneer differentiation, the user command timer construction among the described step e is searched in the user command timer construction formation of this veneer according to the timer pointer in the message frame head.

4, method according to claim 1, it is characterized in that, user command timer construction among the described step b further comprises the structured fingers of the previous user command timer that points to veneer and points to the structured fingers of a back user command timer of veneer, according to the user command timer construction formation of this structured fingers structure with the doubly linked list of veneer differentiation, the user command timer construction among the described step e is searched in the user command timer construction formation of this veneer according to the timer pointer in the message frame head.

5, method according to claim 1, it is characterized in that, described router host computer system safeguards that a timer is to realize by making up a timer construction, release timer promptly discharges corresponding timer construction, and this timer construction comprises function pointer, the function input parameter that need call behind timer pointer and this timer expiry at least.

6, method according to claim 1 is characterized in that described step a further comprises, if router host computer system application timer is unsuccessful, then to user prompt application timer mistake, and stops the execution of this order.

7, method according to claim 1, it is characterized in that, the described message frame head of step c comprises type of message, message attributes and timer pointer at least, wherein type of message is any type in order or the data type, and message attributes is any attribute in command property or the data attribute.

8, method according to claim 1 is characterized in that described step e further comprises, if it is unsuccessful to search the user command timer construction, then to the failure of user prompt veneer fill order, end process.

9, method according to claim 1 is characterized in that described step f further comprises, if search the failure of user command timer construction according to the timer pointer, then to user alert system mistake, end process.

10, method according to claim 1, it is characterized in that, the described prompting of step f user time-out error comprises the veneer of finding this order timer correspondence according to the slot number at the veneer place in the user command timer construction, attribute-bit according to order is found overtime user command, and this veneer of prompting user is carried out this command timeout.

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