Method for realizing intelligent network card by combining NP chip with TCAM
A smart network card and chip combination technology, applied in the field of smart network cards, can solve the problems of unstable delay, complex hardware design logic, high price, etc., and achieve the effect of ensuring fixed delay, eliminating complex design, and enhancing the ability of stream offloading.
Pending Publication Date: 2022-04-19
芯启源(南京)半导体科技有限公司
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The disadvantage of this design is that the logic of the hardware design is complex, the size of the FPGA will increase due to the huge functional modules, resulting in high prices, and the realization of Microflow tables and Megaflow tables requires reasonable management of large-scale DDR, and the delay is not fixed. How to ensure Search speed is also one of the bottlenecks
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[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.
[0020] image 3 It is a schematic diagram of network data packet flow control of an intelligent network card according to the present invention. The core of the present invention is based on the NP chip combined with TCAM. The NP chip replaces the header parser implemented by the FPGA, the classifier action execution logic, tunnel query and other functions, and the TCAM implements Megaflow inst...
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According to the intelligent network card design scheme, an NP chip is combined with a TCAM to complete OVS partial unloading, the hardware design of an original FPGA is replaced with the programmable NP chip, an unloaded Megaflow table is achieved through the unique characteristics of the TCAM, a Microflow table is completely eliminated, the whole right of flow table processing work is given to the TCAM and is stripped from the NP chip design, the pressure of the NP chip for storing the flow table is eliminated, and the flow table processing efficiency is improved. The design of a network card system is simplified, and quick search and fixed time delay of the flow table are ensured.
Description
technical field [0001] The invention belongs to the technical field of smart network cards, and more specifically relates to a method for realizing a smart network card by combining an NP chip with a TCAM. Background technique [0002] With the continuous development of the network information age, the concept of network is constantly being redefined. From the traditional network to the proposal of SDN, and then from the development of SDN to the wide application of cloud products, cloud virtual machines, cloud containers, and cloud functions have changed from conception to Reality. The smooth operation of cloud applications is not only related to the design of the platform system architecture, but also related to the supported network characteristics and network quality. OVS is one of the important application software to realize SDN. The sinking of supported network features is a direct way to improve network quality. By changing the interface functions provided by OVS, ...
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IPC IPC(8): H04L45/645H04L47/125H04L47/2441H04L69/22G06F16/901G06F16/903G06F16/906
CPCH04L69/22H04L47/125H04L47/2441H04L45/54G06F16/9014G06F16/90339G06F16/906
Inventor 王娜张远超陈盈安卢笙
Owner 芯启源(南京)半导体科技有限公司