Network packet processing device using multi-core parallel processing and related network packet forwarding method

A network packet forwarding method comprising:

• processing, by a plurality of packet processing circuits of a parallel processing circuit, different packets in parallel, wherein each of the plurality of packet processing circuits comprises a network processing unit (NPU) core;
• dispatching a plurality of packets to the plurality of packet processing circuits, respectively;
• and
• performing an order-preserved sending operation upon a plurality of processed packets generated by the parallel processing circuit, wherein the plurality of processed packets comprise a first processed packet and a second processed packet corresponding to a first packet and a second packet included in the plurality of packets, respectively, and an order of the first processed packet and the second processed packet in an output flow sent is the same as an order of the first packet and the second packet in an input flow.

A network packet processing device comprising:

• a parallel processing circuit, comprising a plurality of network processing unit (NPU) cores, the plurality of NPU cores comprising:
• a first NPU core, arranged to complete processing of a first packet individually without relying on other NPU cores included in the plurality of NPU cores, and generate a first processed packet;
• a packet dispatch circuit, arranged to dispatch the first packet to the first NPU core;
• and
• a packet sending circuit, arranged to send the first processed packet.