Method and system for managing output port queue of network processor

Abstract

The invention relates to a method and a system for managing an output port queue of a network processor. The method comprises the following steps: realizing mode matching on the received data message through a query tree table by an FPP micro-engine; according to the matching result, enabling the data message to enter a corresponding service processing stream; with regard to the data message entering the corresponding service stream, identifying the priority of the data message and sending the data message and a priority parameter thereof together to a TM micro-engine; and using the priority parameter of the data message and a buffer threshold value of an output logical port as an ACL rule by the TM micro-engine; according to the ACL rule, generating a judgment conclusion whether the data message is added to the output port queue; and completing the processing of forwarding or abandoning the data message in the output port queue of the TM micro-engine. The method and the system utilize the ALC rule to realize the blocking processing on the specific data message in an output port queue management part of the network processor and avoid the occurrence of congestion more effectively.

Description

technical field [0001] The invention relates to the field of data communication, in particular to a management method and system for a network processor output port queue. Background technique [0002] Existing network processor technology is usually based on micro-engines to realize business processing, and each micro-engine cooperates to complete the flow classification, rate limit, queue management, message modification and scheduling output of the passing data packet service flow, etc. deal with. The functions implemented by each micro-engine are relatively fixed. The Policing micro-engine implements rate limiting, the Traffic Shaping micro-engine (TS) implements traffic shaping, and the Traffic Management micro-engine (TM) implements queue management and packet modification. A microengine (Stream Editor, SED for short) implements message modification, and a fast pattern microengine (Fast Pattern Processor, FPP for short) implements flow classification. [0003] It is ...

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Problems solved by technology

[0005] In summary, the ACL access control rules in the prior art are all implemented in the flow classification part, and the application of the ACL access control does not involve the congestion avoidance control of data packets in the output port queue management part; and the current network processor output port The management part of the queue cannot implement blocking processing for specific data packets

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