Method and system for packet transmission in Linux network bridge mode

Abstract

The invention relates to network communication field, for solving the problem that prior Linux system can not acquire certain consultative message in a bridge mode, particularly providing a method of transmitting the message under linux bridge mode and a system. Received message is processed on a mount point 3 between the step of processing the mount point 1 and transmitting the received message, comprising: judging whether protocol type value of the received message is a special protocol type value, if true, copying the received message and copying to a Raw socket unit corresponding to the protocol type value, obtaining received message through the Raw socket unit by a supernatant application program; otherwise transmitting the received message. The invention has the advantages in that, the Linux system greatly advances system performance in the bridge mode, thereby reducing system load and increasing monitoring efficiency.

Description

technical field [0001] The invention relates to the field of communication, in particular to the field of communication network, specifically a method for transmitting messages in the linux network bridge mode. Background technique [0002] The bridge works at the data link layer, connects two LANs, and forwards frames according to the MAC address, which can be regarded as a "low-level router" (the router works at the network layer and forwards according to network addresses such as IP addresses). [0003] Socket is a process communication mechanism of UNIX, also commonly called "socket", which is used to describe an IP address and port, and is a handle of a communication chain. The raw socket is one of the sockets. The protocol packet received by the machine can be captured through the Raw socket. In particular, when capturing the packet of the data link layer protocol, the value of protocol can be ETH_P_ALL, or an Ethernet type value. For example, sockfd=socket(AF_INET, ...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a kind of method that transmits message under linux network bridge mode, is used to solve the deficiency that can not capture data link layer message according to the needs of application program under the Linux system network bridge mode in the prior art , reduce system load, and improve system efficiency

Images