US 8,913,617 B1Granted

Packet processor for altering a header portion of a data packet

AssigneeMarvell Israel (M.I.S.L) Ltd.

InventorsYaniv Kopelman, Nafea Bishara, Yariv Anafi

Life of this patent

Estimating the term…

Loading patent…

Abstract

A network device includes a first port configured to receive an incoming data packet. A memory stores the incoming data packet. A second port is configured to transmit outgoing packets. A packet processor is configured to generate a data structure, corresponding to the incoming data packet, that includes information based on a header portion of the incoming data packet and, in each of a plurality of processing operations, perform at least one processing task on the data packet using the data structure. The processing operations include adding to and/or subtracting from the information stored in the data structure, and preparing the data structure to be further modified in a subsequent processing operation. The packet processor is further configured to modify the header portion according to the data structure as modified at the plurality of processing operations and provide the stored data packet with the modified header portion to the second port.

Claims16

Dependent claims

A network device, comprising:

a first port configured to receive an incoming data packet including a header portion and a data portion;
memory configured to store the incoming data packet;
a second port configured to transmit an outgoing data packet to a network;
and
a packet processor configured to:
generate a data structure corresponding to the incoming data packet, the data structure including at least some information based on the header portion of the incoming data packet and, in each of a plurality of processing operations, perform at least one processing task according to the data structure, the processing operations including (i) at least one of adding to and subtracting from the information stored in the data structure, and (ii) preparing the data structure to be further modified in a subsequent processing operation,
the packet processor further configured to perform header alteration to:
modify the header portion of the stored incoming data packet according to the data structure as modified at the plurality of processing operations;
and
provide the stored incoming data packet with the modified header portion to the second port to be output as the outgoing data packet.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/251,763Filed 14 Apr 2014 · continuation
Priority: 27 Nov 2001
Granted: 16 Dec 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04L 61/103
Of different types: across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
H04L 12/462
LAN interconnection over a backbone network, e.g. Internet, Frame Relay: lAN interconnection over a bridge based backbone
H04L 67/00
Network arrangements or protocols for supporting network services or applications
H04L 69/22
Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass:…

Family

Application60/333,709Us provisional application · filed 27 Nov 2001
Application10/191,663Parent of this continuation · filed 8 Jul 2002
Application12/283,011Parent of this continuation · filed 9 Sep 2008
US 7,424,019 B1Parent of this continuation · filed 9 Sep 2008
Application13/863,858Parent of this continuation · filed 16 Apr 2013
US 8,428,061 B1Parent of this continuation · filed 23 Apr 2013
US 8,743,882 B1Parent of this continuation
US 8,913,617 B1This patent

From the US filing history. Foreign family members aren’t listed.