Dpdk based basic knowledge sorting-01

One 、 Multicore processor

Two 、 Network processing module division

The processing and forwarding of network messages are mainly divided into hardware processing part and software processing part , from

The following modules constitute ：

·Packet input： Message input .

·Pre-processing： The message is processed in a relatively coarse granularity .

·Input classification： Conduct fine-grained shunting of messages .

·Ingress queuing： Provide descriptor based queues FIFO.

·Delivery/Scheduling： According to queue priority and CPU State to schedule .

·Accelerator： Provide encryption, decryption and compression / Hardware functions such as decompression .

·Egress queueing： According to QOS Level scheduling .

·Post processing： Post message processing releases the cache .

·Packet output： Send it from the hardware .

3、 ... and 、dpdk and pipeline

Conventional Network Processor（ Dedicated network processor ） The forwarding model can be divided into

run to completion（ Run to end , abbreviation RTC） Models and pipeline（ Assembly line ）

Model .

Four 、 Forwarding operation