Network data forwarding method and system of Linux device

Abstract

The invention discloses a network data forwarding method and system of a Linux device, and relates to the technical field of Linux network data forwarding. The method comprises the following steps ofdetermining whether a Hash table item corresponding to the received data packet exists in a Hash link list, if yes, forwarding the received data packet, otherwise, keeping the Linux device in the Hashlink list, and forming the Hash table item according to the received data packet; subjecting the received data packet to the CPU processing to form a sending data packet; if the Hash table item corresponding to the data packet information exists in the Hash link list, comparing the header information of the sending data packet with the header information of the data packet in the Hash table itemto obtain the difference header information, and forwarding the sending data packet through a Linux standard network protocol stack after the difference header information is added to the hash table item. On the basis that the data packet is not forwarded relaying on a hardware network accelerator, the probability of data packet loss is reduced, the forwarding time of the data packet is shortened,and the forwarding efficiency of the data packet is improved.

Description

technical field [0001] The invention relates to the technical field of Linux network data forwarding, in particular to a method and system for forwarding network data of Linux devices. Background technique [0002] The Linux system is a multi-tasking, multi-threading and multi-CPU open source operating system. Since it came out in 1990, it has derived various versions and is widely used on various hardware devices (ie Linux devices), such as home gateways, Tablet PCs, mobile phones, and various servers, etc. [0003] Taking the home gateway as an example, the home gateway running Linux system, as a terminal product that can provide users with Internet access, video and voice services, is more and more widely used, and the needs of customers are becoming more and more abundant. Especially strong, the demand has risen from the previous few megabytes to the current tens of megabytes or even hundreds of megabytes. The first-generation home gateway adopts the data forwarding lo...

AI Technical Summary

Problems solved by technology

[0008] (1) The hardware network accelerator can only forward specific types of network data packets, and the hardware network accelerator needs to rely on specific CPU hardware; therefore, the packet types and usage requirements forwarded by the hardware network accelerator have certain restrictions, and the scope of application is relatively single. poor versatility

[0009] (2) The CPU cannot control the network data packets forwarded by the hardware network accelerator, and thus cannot know the information of the network data packets (such as the speed limit of the network data packets, the content limit of the webpage, etc.), and the security of the network data packets has certain limitations. Hidden danger

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