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Interrupt processing method and device of a centralized macsec packet processing chip

A processing method and technology of a processing device, which are applied in the field of network communication and can solve problems such as interruption and loss

Active Publication Date: 2022-05-06
SUZHOU CENTEC COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the period from when the CPU reads the interrupt to when it is processed, new interrupts of different types may be reported on the same SC. At this time, the CPU has not yet processed the previously reported interrupts. After processing, the interrupt signal is cleared. During the new Different types of interrupts will be lost

Method used

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  • Interrupt processing method and device of a centralized macsec packet processing chip
  • Interrupt processing method and device of a centralized macsec packet processing chip

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Embodiment Construction

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0023] Such as figure 1 As shown, it is an interrupt processing method of a centralized MACsec packet processing chip disclosed by the present invention, comprising the following steps:

[0024] S100, configuring several interrupt status tables in the chip, each interrupt status table corresponding to a security channel, and the interrupt status table includes interrupt type fields indicating different interrupt types;

[0025] Specifically, the centralized MACsec packet processing chip can usually use chips such as ASIC (Application Specific Integrated Circuit, Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array, Field Programmable Gate Array), NP (Network Processor, network processor), During data processing, MAC security data is transmitted through a secu...

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Abstract

The invention discloses a method and device for interrupt processing of a centralized MACsec packet processing chip. The method includes disposing a plurality of interrupt status tables in the chip, each interrupt status table corresponds to a security channel, and the chip according to the interrupt type in each interrupt status table The field generates corresponding interrupts and reports them, and further judges whether there are interrupts that have been reported and have not been cleared. If so, when the security channel generates new and different types of interrupts, the chip updates the corresponding interrupt status table and reports and / or the security channel generates the same type. Do not report repeatedly when interrupted. The invention can normally report different types of interruptions generated by each security channel in the sending and receiving direction without losing the different types of interruptions.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to an interrupt processing method and device of a centralized MACsec packet processing chip. Background technique [0002] MACsec (Media Access Control Security, MAC security) defines the method of data security communication based on IEEE 802 local area network. MACsec can provide users with secure MAC layer data sending and receiving services, including user data encryption, data frame integrity check and Data source authenticity verification. In the MACsec architecture, SC (SecureChannel, secure channel) is a secure channel for transmitting MAC security data between CA (secure Connectivity Association, secure connection association) participants, and each SC can provide one-way point-to-point or point-to-point For multi-point communication, for example, for two point-to-point devices A and B, the one-way data forwarding link from A to B can be regarded as one SC (a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/24H04L9/40
CPCG06F13/24H04L63/162H04L63/18
Inventor 龚海东方沛昱裴园龚源泉
Owner SUZHOU CENTEC COMM CO LTD
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