Method and system for managing wireless network interface based on DPDK

Abstract

The invention discloses a method and a system for managing a wireless network interface based on DPDK, and relates to the field of wireless function technology development of soft forwarding equipmentfor realizing network virtualization. The method comprises the following steps: creating tx_ring and rx_ring managed by a user mode DPDK for each wireless network interface, and binding the tx_ring and the rx_ring into a virtual transceiving port of the DPDK; based on the AF_PACKET, respectively creating a transceiving socket of a direct connection hardware layer for each wireless network interface, and setting rx_lock and tx_lock based on a packet mapping mode; mapping tx_ring to the kernel space of tx_lock by adopting memory mapping, and mapping rx_ring to the kernel space of rx_lock to realize memory sharing; and directly polling the tx_ring and the rx_ring through the DPDK to finish the transceiving of the frame. According to the method, kernel protocol stack processing is skipped, and data copying operation during one-time receiving and sending is omitted; wireless driving does not need to be changed, and time delay is qualified.

Description

technical field [0001] The invention relates to the field of wireless function technology development of a soft forwarding device realizing network virtualization, in particular to a method and system for managing a wireless network interface based on DPDK. Background technique [0002] Common communication forwarding equipment uses dedicated devices to efficiently forward messages through built-in hardware circuits or hardware circuits formed by programming, that is, only a very small amount of data frames need to be processed by the CPU. However, with the rapid development of the Internet, the rapid emergence of the cloud industry and the demand for network virtualization, a large number of data frames usually need to be processed by the CPU, that is, the integration of communication and information processing is required. This convergence is ICT (Information and Communication Technology, Information and Telecommunications Technology). [0003] The usual devices are KIO (...

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Problems solved by technology

[0010] Generally, a direct implementation method is to submit the wireless frame processing flow unchanged, submit it to the CPU, and then transfer it to DPDK, so forwarding is feasible, but because the message needs to go through a complete process, the user state and kernel state copy switching , and there are two-hop routes, which will cause a large delay

In addition, two routing tables need to be maintained, which does not meet the design requirements

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