Packet processing device and packet processing method

A packet processing method comprising:

• concatenating a plurality of packets to be transmitted to generate a first combination packet;
• writing the first combination packet to a first packet memory;
• writing first information on a respective address in the first packet memory of a respective beginning of each of the plurality of packets of the first combination packet to a first descriptor, the first descriptor being a predetermined data area in one or more memories;
• DMA-transferring the first combination packet to a first line handler or reading the first combination packet from the first packet memory and writing the first combination packet to the first line handler through one or more processors;
• and
• separating the first combination packet into the plurality of packets and sending the plurality of packets from the first line handler to a communication line.

A packet processing apparatus comprising:

• a first packet memory configured to store a packet to be transmitted;
• a first packet combiner configured to:
• concatenate a plurality of packets to be transmitted to generate a first combination packet;
• and
• write the first combination packet to the first packet memory;
• a first line handler configured to send a packet to be transmitted to a communication line;
• and
• a first combination packet transferor configured to transfer the first packet memory to the first liner handler;
• wherein the first packet combiner is further configured to write first information on a respective address in the first packet memory of a respective beginning of each of the plurality of packets of the first combination packet to a first descriptor, the first descriptor being a predetermined data area in one or more memories;
• and
• wherein the first line handler is configured to separate the first combination packet into the plurality of packets and send the plurality of packets to the communication line.