Packet processing apparatus for realizing wire-speed, and method thereof

A packet processing apparatus comprising:

• a first packet processing apparatus;
• a second packet processing apparatus for processing a packet transmitted from said first packet processing apparatus, said second packet processing apparatus comprising:
• a packet selecting means (246) for checking whether an inputted packet is a normal packet transmitted after being processed in the first packet processing apparatus or a detour packet transmitted without being processed, and directing the packets into corresponding paths;
• a queue (254) for storing the detour packet transmitted from the packet selecting means;
• a packet scheduling means (247) for reading the detour packet stored in the queue and transmitting the detour packet to a packet processing means (255) in the rear end of the second packet processing apparatus;
• the packet processing means (255) for processing the detour packet transmitted from the packet scheduling means and outputting the detour packet as the normal packet,
• wherein the detour packet stored in the queue includes:
• a field for providing information on whether the packet is a detour packet;
• a field for providing information on whether the packet is a final detour packet;
• a field for providing information on which queue the packet comes from;
• and
• a field for providing information of the first packet processing apparatus which sets up the packet as the detour packet;
• wherein the packet scheduling means generates a queue lock release packet based on field information of the detour packet and transmits the queue lock release packet to the first packet processing apparatus which transmits the detour packet.

A packet processing method comprising:

• processing a packet by a first packet processing apparatus as one of a regular packet and a detour packet;
• processing a packet transmitted by said first packet processing apparatus by a second packet processing apparatus;
• said second processing apparatus checking whether an inputted packet is a normal packet transmitted after being processed in the second packet processing apparatus or a detour packet transmitted without being processed, and dividing the packets into each path;
• said second processing apparatus processing the divided detour packets, rotationally checking a buffer corresponding to each said path and outputting the detour packet as the normal packet;
• and
• generating a queue lock release packet based on field information of the detour packet and transmits the queue lock release packet to the first packet processing apparatus which transmits the detour packet.

A packet processing method comprising:

• processing a packet by a first packet processing apparatus, as one of a regular packet and a detour packet;
• processing a packet transmitted by said first packet processing apparatus by a second packet processing apparatus;
• said second processing apparatus checking whether an inputted packet is a normal packet transmitted after being processed in the second packet processing apparatus or a detour packet transmitted without being processed, and dividing the packets into each path;
• said second processing apparatus processing the divided detour packets and outputting the detour packet as the normal packet;
• and
• generating a queue lock release packet based on field information of the detour packet and transmits the queue lock release packet to the first packet processing apparatus which transmits the detour packet,
• wherein the detour packet includes:
• a field for providing information on whether the packet is a detour packet;
• a field for providing information on whether the packet is a final detour packet;
• a field for providing information on which queue the packet comes from;
• and
• a field for providing information on the packet processing apparatus that sets up the packet as a detour packet.