DPDK based Improvement of Packet Forwarding
Reel time processing of packets occupies a significant position in the field of computer network security. With theexplosive growth of the backbone link rate,which is consistent with Gilder's law, many bottlenecks of server performance leave the real time data stream unprocessed.Thus, we proposedto take use of DPDK(Data Plan Development Kit) framework to achieve an intelligent NIC packet forwarding system. During this research, we deeply analysis the forwarding process of packet in DPDK and improve its DMA mode.According to the results of experiment, the system greatly enhanced the performance of packet forwarding,and the throughput of forwarding 64 byet or random length packets by 20Gbit NIC reaches13.3Gbps and 18.7Gbps(dual ports forwarding)