公开(公告)号：US20230099304A1

公开(公告)日：2023-03-30

申请号：US17488362

申请日：2021-09-29

Applicant: MELLANOX TECHNOLOGIES, LTD.

Inventor： Haggai Eran ,  Liran Liss ,  Yuval Shpigelman ,  Idan Burstein

IPC: G06F3/06

Abstract: In one embodiment, a system includes a peripheral device including a memory access interface to receive from a host device headers of packets, while corresponding payloads of the packets are stored in a host memory of the host device, and descriptors being indicative of respective locations in the host memory at which the corresponding payloads are stored, a data processing unit memory to store the received headers and the descriptors without the payloads of the packets, and a data processing unit to process the received headers, wherein the peripheral device is configured, upon completion of the processing of the received headers by the data processing unit, to fetch the payloads of the packets over the memory access interface from the respective locations in the host memory responsively to respective ones of the descriptors, and packet processing circuitry to receive the headers and payloads of the packets, and process the packets.

公开(公告)号：US20220417161A1

公开(公告)日：2022-12-29

申请号：US17902936

申请日：2022-09-05

Applicant: MELLANOX TECHNOLOGIES, LTD.

Inventor： Liron Mula ,  Lion Levi ,  Yuval Shpigelman

IPC: H04L47/26 ,  H04L47/2425 ,  H04L47/30 ,  H04L47/62 ,  H04L47/10

Abstract: A network element includes a transmit-queue for transmitting packets from at least two sources, each source having a predefined priority level, to a headroom buffer in a peer network element. Flow-control circuitry receives from the peer network element signaling that indicates a number of credits for transmitting packets to the peer network element, manages a current number of credits available for transmission from the transmit-queue, responsive to the signaling, selects a threshold priority based on the current number of credits for the transmit-queue; and transmits packets associated with data sources of the transmit-queue that are higher in priority than the threshold priority, and refrain from transmitting other packets associated with the transmit-queue.

公开(公告)号：US20220407814A1

公开(公告)日：2022-12-22

申请号：US17348801

申请日：2021-06-16

Applicant: MELLANOX TECHNOLOGIES, LTD.

Inventor： Matty Kadosh ,  Yuval Shpigelman ,  Omer Shabtai ,  Yonatan Piasetsky ,  Aviv Kfir ,  Alan Lo ,  Marian Pritsak

IPC: H04L12/865 ,  H04L12/851 ,  H04L12/26

Abstract: A network device includes processing circuitry and a plurality of ports. The ports connect to a communication network. The processing circuitry is configured to receive, via an input port, data packets and probe packets that are addressed to a common output port, to store the data packets in a first queue and the probe packets in a second queue, both the first queue and the second queue are served by the output port, to produce telemetry data indicative of a state of the network device, based on a processing path that the data packets traverse within the network device, to schedule transmission of the data packets from the first queue at a first priority, and schedule transmission of the probe packets from the second queue at a second priority higher than the first priority, and to modify the scheduled probe packets so as to carry the telemetry data.

公开(公告)号：US20220385578A1

公开(公告)日：2022-12-01

申请号：US17335312

申请日：2021-06-01

Applicant: Mellanox Technologies LTD.

Inventor： Matty Kadosh ,  Gil Levy ,  Yuval Shpigelman ,  Omer Shabtai ,  Yonatan Piasetzky ,  Liron Mula

IPC: H04L12/801 ,  G06T1/20

Abstract: Devices, methods, and systems are provided. In one example, a method is described to include measuring a cardinality of actual data flows at a flow-processing resource, determining that the cardinality of the actual data flows triggers a congestion control action, and, in response to determining that the cardinality of the actual data flows triggers the congestion control action, implementing the congestion control action with respect to the flow-processing resource.

公开(公告)号：US11296988B2

公开(公告)日：2022-04-05

申请号：US16986428

申请日：2020-08-06

Applicant: Mellanox Technologies, Ltd.

Inventor： Yuval Shpigelman ,  Idan Burstein ,  Noam Bloch ,  Reut Zuck ,  Roee Moyal

IPC: H04L1/00 ,  H04L47/12 ,  H04L47/2441 ,  H04L69/22 ,  H04L67/104 ,  H04L47/25

Abstract: A network adapter includes a receive (Rx) pipeline, a transmit (Tx) pipeline and congestion management circuitry. The Rx pipeline is configured to receive packets sent over a network by a peer network adapter, and to process the received packets. The Tx pipeline is configured to transmit packets to the peer network adapter over the network. The congestion management circuitry is configured to receive, from the Tx pipeline and from the Rx pipeline, Congestion-Control (CC) events derived from at least some of the packets exchanged with the peer network adapter, to exchange user-programmable congestion control packets with the peer network adapter, and to mitigate a congestion affecting one or more of the packets responsively to the CC events and the user-programmable congestion control packets.

公开(公告)号：US11218413B2

公开(公告)日：2022-01-04

申请号：US16683302

申请日：2019-11-14

Applicant: MELLANOX TECHNOLOGIES, LTD.

Inventor： Yuval Shpigelman ,  Roee Moyal ,  Shahrazad Hleihel ,  Kobi Pines

IPC: H04L1/00 ,  H04L12/825 ,  H04L12/841 ,  H04L12/823 ,  H04L12/861

Abstract: A network adapter includes a receive (RX) pipeline, a transmit (TX) pipeline, hardware-implemented congestion-control circuitry, and a congestion-control processor. The RX pipeline is configured to receive packets from a network and process the received packets. The TX pipeline is configured to transmit packets to the network. The hardware-implemented congestion-control circuitry is configured to receive, from the TX pipeline and from the RX pipeline, Congestion-Control (CC) events derived from at least some of the packets transmitted to the network and from at least some of the packets received from the network, and to pre-process the CC events. The congestion-control processor is configured to receive the pre-processed CC events from the congestion-control circuitry, and to throttle a transmission rate of the packets transmitted to the network by the TX pipeline responsively to the pre-processed CC events.

公开(公告)号：US20210344782A1

公开(公告)日：2021-11-04

申请号：US17198292

申请日：2021-03-11

Applicant: MELLANOX TECHNOLOGIES, LTD.

Inventor： Yuval Shpigelman ,  Idan Burstein ,  Aviv Kfir ,  Liron Mula ,  Niv Aibester ,  Gil Levy

IPC: H04L29/06 ,  H04L12/801 ,  H04L1/00

Abstract: A network element includes circuitry and multiple ports. The multiple ports are configured to connect to a communication network. The circuitry is configured to receive via one of the ports a packet that originated from a source node and is destined to a destination node, the packet including a mark that is indicative of a cumulative state derived from at least bandwidth utilization conditions of output ports that were traversed by the packet along a path, from the source node up to the network element, to select a port for forwarding the packet toward the destination node, to update the mark of the packet based at least on a value of the mark in the received packet and on a local bandwidth utilization condition of the selected port, and to transmit the packet having the updated mark to the destination node via the selected port.

公开(公告)号：US20210152474A1

公开(公告)日：2021-05-20

申请号：US16986428

申请日：2020-08-06

Applicant: Mellanox Technologies, Ltd.

Inventor： Yuval Shpigelman ,  Idan Burstein ,  Noam Bloch ,  Reut Zuck ,  Roee Moyal

IPC: H04L12/801 ,  H04L12/851 ,  H04L12/825 ,  H04L29/08 ,  H04L29/06

Abstract: A network adapter includes a receive (Rx) pipeline, a transmit (Tx) pipeline and congestion management circuitry. The Rx pipeline is configured to receive packets sent over a network by a peer network adapter, and to process the received packets. The Tx pipeline is configured to transmit packets to the peer network adapter over the network. The congestion management circuitry is configured to receive, from the Tx pipeline and from the Rx pipeline, Congestion-Control (CC) events derived from at least some of the packets exchanged with the peer network adapter, to exchange user-programmable congestion control packets with the peer network adapter, and to mitigate a congestion affecting one or more of the packets responsively to the CC events and the user-programmable congestion control packets.

公开(公告)号：US11005724B1

公开(公告)日：2021-05-11

申请号：US16240749

申请日：2019-01-06

Applicant: Mellanox Technologies, Ltd.

Inventor： Yuval Shpigelman ,  Eitan Zahavi

IPC: H04L12/24 ,  H04L12/46

Abstract: A design tool for network interconnection includes a processor coupled to an input device and to an output device. The processor receives via the input device design parameters including: (i) a number G of groups of network elements, (ii) a number S of spines associated with each group, and (iii) a number P of ports that each spine has for connecting to other spines, using short-cable connections or long-cable connections. The processor determines an interconnection plan by specifying connections among spines belonging to different groups, in a clique or a bipartite scheme, so that for given values of G, S and P, (i) a number of the long-cable connections among the spines is minimized, and (ii) a number of inter-group connections is balanced among the G groups up to a deviation of a single connection. The processor outputs to the output device instructions for applying the interconnection plan.