Patents by Inventor Remy Chang
Remy Chang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230412520Abstract: Some embodiments provide a method for an ingress packet processing pipeline of a network forwarding integrated circuit (IC). The ingress packet processing pipeline is for receiving packets from a port of the network forwarding IC and processing the packets to assign different packets to different queues of a traffic management unit of the network forwarding IC. The method receives state data from the traffic management unit. The method stores the state data in a stateful table. The method assigns a particular packet to a particular queue based on the state data received from the traffic management unit and stored in the stateful table.Type: ApplicationFiled: June 27, 2023Publication date: December 21, 2023Applicant: Barefoot Networks, Inc.Inventors: Yi Li, Michael Feng, Anurag Agrawal, Jeongkeun Lee, Changhoon Kim, Remy Chang
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Publication number: 20230388184Abstract: Some embodiments of the invention provide a network forwarding element that can be dynamically reconfigured to adjust its data message processing to stay within a desired operating temperature or power consumption range. In some embodiments, the network forwarding element includes (1) a data-plane forwarding circuit (“data plane”) to process data tuples associated with data messages received by the IC, and (2) a control-plane circuit (“control plane”) for configuring the data plane forwarding circuit. The data plane includes several data processing stages to process the data tuples. The data plane also includes an idle-signal injecting circuit that receives from the control plane configuration data that the control plane generates based on the IC's temperature. Based on the received configuration data, the idle-signal injecting circuit generates idle control signals for the data processing stages.Type: ApplicationFiled: May 10, 2023Publication date: November 30, 2023Applicant: Barefoot Networks, Inc.Inventor: Remy Chang
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Patent number: 11750526Abstract: Some embodiments provide a method for an ingress packet processing pipeline of a network forwarding integrated circuit (IC). The ingress packet processing pipeline is for receiving packets from a port of the network forwarding IC and processing the packets to assign different packets to different queues of a traffic management unit of the network forwarding IC. The method receives state data from the traffic management unit. The method stores the state data in a stateful table. The method assigns a particular packet to a particular queue based on the state data received from the traffic management unit and stored in the stateful table.Type: GrantFiled: December 24, 2020Date of Patent: September 5, 2023Assignee: Barefoot Networks, Inc.Inventors: Yi Li, Michael Feng, Anurag Agrawal, Jeongkeun Lee, Changhoon Kim, Remy Chang
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Patent number: 11689424Abstract: Some embodiments of the invention provide a network forwarding element that can be dynamically reconfigured to adjust its data message processing to stay within a desired operating temperature or power consumption range. In some embodiments, the network forwarding element includes (1) a data-plane forwarding circuit (“data plane”) to process data tuples associated with data messages received by the IC, and (2) a control-plane circuit (“control plane”) for configuring the data plane forwarding circuit. The data plane includes several data processing stages to process the data tuples. The data plane also includes an idle-signal injecting circuit that receives from the control plane configuration data that the control plane generates based on the IC's temperature. Based on the received configuration data, the idle-signal injecting circuit generates idle control signals for the data processing stages.Type: GrantFiled: August 6, 2021Date of Patent: June 27, 2023Assignee: Intel CorporationInventor: Remy Chang
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Patent number: 11595289Abstract: Embodiments described herein describe a network tester that is configured to perform packet modification at an egress pipeline of a programmable packet engine. A packet stream is received at an egress pipeline of an output port of the programmable packet engine, wherein the output port includes a packet modifier. Packets of the packet stream are modified at the packet modifier. The packet stream including modified packets is transmitted through an egress pipeline of the output port.Type: GrantFiled: March 27, 2020Date of Patent: February 28, 2023Assignee: Barefoot Networks, Inc.Inventors: Jeongkeun Lee, Georgios Nikolaidis, Andre Lam, Remy Chang, Joon-Myung Kang, Ashkan Nikravesh, Ramkumar Krishnamoorthy, Alain Loge
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Patent number: 11503141Abstract: Some embodiments provide a network forwarding integrated circuit (IC) that includes at least one packet processing pipeline. The packet processing pipeline includes multiple match-action stages, at least one of which includes a stateful processing unit that operates at a line rate of the network forwarding IC. The stateful processing unit is configured to receive data stored in a memory location associated with a stateful table of the match-action stage. The data includes a set of values. The stateful processing unit is further configured to identify one of a maximum value and a minimum value from the set of values, and to output the identified value for use by a next match-action stage.Type: GrantFiled: December 7, 2017Date of Patent: November 15, 2022Assignee: Barefoot Networks, Inc.Inventors: Jay Evan Scott Peterson, Michael Gregory Ferrara, Patrick Bosshart, Changhoon Kim, Remy Chang
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Patent number: 11424983Abstract: Some embodiments of the invention provide a network forwarding element that can be dynamically reconfigured to adjust its data message processing to stay within a desired operating temperature or power consumption range. In some embodiments, the network forwarding element includes (1) a data-plane forwarding circuit (“data plane”) to process data tuples associated with data messages received by the IC, and (2) a control-plane circuit (“control plane”) for configuring the data plane forwarding circuit. The data plane includes several data processing stages to process the data tuples. The data plane also includes an idle-signal injecting circuit that receives from the control plane configuration data that the control plane generates based on the IC's temperature. Based on the received configuration data, the idle-signal injecting circuit generates idle control signals for the data processing stages.Type: GrantFiled: May 8, 2020Date of Patent: August 23, 2022Assignee: Barefoot Networks, Inc.Inventor: Remy Chang
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Publication number: 20210367844Abstract: Some embodiments of the invention provide a network forwarding element that can be dynamically reconfigured to adjust its data message processing to stay within a desired operating temperature or power consumption range. In some embodiments, the network forwarding element includes (1) a data-plane forwarding circuit (“data plane”) to process data tuples associated with data messages received by the IC, and (2) a control-plane circuit (“control plane”) for configuring the data plane forwarding circuit. The data plane includes several data processing stages to process the data tuples. The data plane also includes an idle-signal injecting circuit that receives from the control plane configuration data that the control plane generates based on the IC's temperature. Based on the received configuration data, the idle-signal injecting circuit generates idle control signals for the data processing stages.Type: ApplicationFiled: August 6, 2021Publication date: November 25, 2021Inventor: Remy CHANG
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Patent number: 11102070Abstract: Some embodiments of the invention provide a network forwarding element that can be dynamically reconfigured to adjust its data message processing to stay within a desired operating temperature or power consumption range. In some embodiments, the network forwarding element includes (1) a data-plane forwarding circuit (“data plane”) to process data tuples associated with data messages received by the IC, and (2) a control-plane circuit (“control plane”) for configuring the data plane forwarding circuit. The data plane includes several data processing stages to process the data tuples. The data plane also includes an idle-signal injecting circuit that receives from the control plane configuration data that the control plane generates based on the IC's temperature. Based on the received configuration data, the idle-signal injecting circuit generates idle control signals for the data processing stages.Type: GrantFiled: April 1, 2019Date of Patent: August 24, 2021Assignee: Barefoot Networks, Inc.Inventor: Remy Chang
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Publication number: 20210119939Abstract: Some embodiments provide a method for an ingress packet processing pipeline of a network forwarding integrated circuit (IC). The ingress packet processing pipeline is for receiving packets from a port of the network forwarding IC and processing the packets to assign different packets to different queues of a traffic management unit of the network forwarding IC. The method receives state data from the traffic management unit. The method stores the state data in a stateful table. The method assigns a particular packet to a particular queue based on the state data received from the traffic management unit and stored in the stateful table.Type: ApplicationFiled: December 24, 2020Publication date: April 22, 2021Inventors: Yi LI, Michael FENG, Anurag AGRAWAL, Jeongkeun LEE, Changhoon KIM, Remy CHANG
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Patent number: 10911377Abstract: Some embodiments provide a method for an ingress packet processing pipeline of a network forwarding integrated circuit (IC). The ingress packet processing pipeline is for receiving packets from a port of the network forwarding IC and processing the packets to assign different packets to different queues of a traffic management unit of the network forwarding IC. The method receives state data from the traffic management unit. The method stores the state data in a stateful table. The method assigns a particular packet to a particular queue based on the state data received from the traffic management unit and stored in the stateful table.Type: GrantFiled: December 7, 2017Date of Patent: February 2, 2021Assignee: Barefoot Networks, Inc.Inventors: Yi Li, Michael Feng, Anurag Agrawal, Jeongkeun Lee, Changhoon Kim, Remy Chang
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Patent number: 10877670Abstract: Some embodiments of the invention provide a network forwarding element that can be dynamically reconfigured to adjust its data message processing to stay within a desired operating temperature or power consumption range. In some embodiments, the network forwarding element includes (1) a data-plane forwarding circuit (“data plane”) to process data tuples associated with data messages received by the IC, and (2) a control-plane circuit (“control plane”) for configuring the data plane forwarding circuit. The data plane includes several data processing stages to process the data tuples. The data plane also includes an idle-signal injecting circuit that receives from the control plane configuration data that the control plane generates based on the IC's temperature. Based on the received configuration data, the idle-signal injecting circuit generates idle control signals for the data processing stages.Type: GrantFiled: August 22, 2017Date of Patent: December 29, 2020Assignee: Barefoot Networks, Inc.Inventor: Remy Chang
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Patent number: 10873532Abstract: Some embodiments provide a method for a traffic management circuit of a data plane forwarding circuit. The traffic management circuit receives data messages from a set of ingress pipelines and provides the data messages to a set of egress pipelines. The method identifies a flow control event. The method provides metadata regarding the flow control event to a message generation circuit of the data plane forwarding circuit via a bus between the traffic management circuit and the message generation circuit.Type: GrantFiled: August 22, 2018Date of Patent: December 22, 2020Assignee: Barefoot Networks, Inc.Inventors: Remy Chang, Anurag Agrawal, Yi Li, Michael Feng, Yan Wang
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Publication number: 20200344122Abstract: Some embodiments of the invention provide a network forwarding element that can be dynamically reconfigured to adjust its data message processing to stay within a desired operating temperature or power consumption range. In some embodiments, the network forwarding element includes (1) a data-plane forwarding circuit (“data plane”) to process data tuples associated with data messages received by the IC, and (2) a control-plane circuit (“control plane”) for configuring the data plane forwarding circuit. The data plane includes several data processing stages to process the data tuples. The data plane also includes an idle-signal injecting circuit that receives from the control plane configuration data that the control plane generates based on the IC's temperature. Based on the received configuration data, the idle-signal injecting circuit generates idle control signals for the data processing stages.Type: ApplicationFiled: May 8, 2020Publication date: October 29, 2020Inventor: Remy CHANG
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Publication number: 20200313999Abstract: Embodiments described herein describe a network tester that is configured to perform packet modification at an egress pipeline of a programmable packet engine. A packet stream is received at an egress pipeline of an output port of the programmable packet engine, wherein the output port includes a packet modifier. Packets of the packet stream are modified at the packet modifier. The packet stream including modified packets is transmitted through an egress pipeline of the output port.Type: ApplicationFiled: March 27, 2020Publication date: October 1, 2020Inventors: Jeongkeun LEE, Georgios NIKOLAIDIS, Andre LAM, Remy CHANG, Joon-Myung KANG, Ashkan NIKRAVESH, Ramkumar KRISHNAMOORTHY, Alain LOGE
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Patent number: 10693725Abstract: Some embodiments of the invention provide a network forwarding element that can be dynamically reconfigured to adjust its data message processing to stay within a desired operating temperature or power consumption range. In some embodiments, the network forwarding element includes (1) a data-plane forwarding circuit (“data plane”) to process data tuples associated with data messages received by the IC, and (2) a control-plane circuit (“control plane”) for configuring the data plane forwarding circuit. The data plane includes several data processing stages to process the data tuples. The data plane also includes an idle-signal injecting circuit that receives from the control plane configuration data that the control plane generates based on the IC's temperature. Based on the received configuration data, the idle-signal injecting circuit generates idle control signals for the data processing stages.Type: GrantFiled: August 22, 2017Date of Patent: June 23, 2020Assignee: Barefoot Networks, Inc.Inventor: Remy Chang
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Publication number: 20200044976Abstract: Some embodiments provide a method for a traffic management circuit of a data plane forwarding circuit. The traffic management circuit receives data messages from a set of ingress pipelines and provides the data messages to a set of egress pipelines. The method identifies a flow control event. The method provides metadata regarding the flow control event to a message generation circuit of the data plane forwarding circuit via a bus between the traffic management circuit and the message generation circuit.Type: ApplicationFiled: August 22, 2018Publication date: February 6, 2020Inventors: Remy Chang, Anurag Agrawal, Yi Li, Michael Feng, Yan Wang
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Patent number: 10523578Abstract: Some embodiments provide a method for a traffic management unit of a network forwarding integrated circuit (IC). The traffic management unit includes multiple queues for storing packets. Each stored packet is (i) received by the traffic management unit from one of multiple ingress packet processing pipelines and (ii) for processing by an egress packet processing pipeline after being released from the queue storing the packet. The method determines that a particular one of the queues has crossed a threshold amount of stored packet data. The method provides queue state data including an identifier of the particular queue and a current amount of data stored in the particular queue to at least a subset of the multiple ingress pipelines. The ingress pipelines use the provided data to process subsequent packets.Type: GrantFiled: December 7, 2017Date of Patent: December 31, 2019Assignee: Barefoot Networks, Inc.Inventors: Yi Li, Michael Feng, Anurag Agrawal, Jeongkeun Lee, Changhoon Kim, Remy Chang
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Patent number: 10505861Abstract: Some embodiments provide a network forwarding integrated circuit (IC) including multiple configurable ingress pipelines, multiple configurable egress pipelines, a traffic management unit, and a statistics bus. The configurable ingress pipelines are for processing packets received from ports of the network forwarding IC. The configurable egress pipelines are for processing packets to be transmitted out the ports of the network forwarding IC. The traffic management unit includes multiple queues, each of which corresponds to one of the egress pipelines, and is for receiving a packet from an ingress pipeline and enqueuing the packet into one of the queues. The statistics bus connects the traffic management unit to at least a subset of the ingress pipelines, and is for providing the ingress pipelines with state information regarding the queues.Type: GrantFiled: December 7, 2017Date of Patent: December 10, 2019Assignee: Barefoot Networks, Inc.Inventors: Yi Li, Michael Feng, Anurag Agrawal, Changhoon Kim, Remy Chang
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Patent number: 10454833Abstract: Some embodiments provide a network forwarding integrated circuit (IC) for processing network packets. The network forwarding IC includes multiple packet processing pipelines and a traffic management unit. Each pipeline is configured to operate as an ingress pipeline and an egress pipeline. The traffic management unit is configured to receive a packet processed by an ingress pipeline and to enqueue the packet for output to a particular egress pipeline. A set of packets received by the network forwarding IC are processed by a first pipeline as an ingress pipeline and a second pipeline as an egress pipeline, then subsequently processed by the second pipeline as an ingress pipeline and a third pipeline as an egress pipeline.Type: GrantFiled: December 12, 2017Date of Patent: October 22, 2019Assignee: BAREFOOT NETWORKS, INC.Inventors: Patrick Bosshart, Jay Evan Scott Peterson, Michael Gregory Ferrara, Remy Chang