公开(公告)号：US12028155B2

公开(公告)日：2024-07-02

申请号：US17534776

申请日：2021-11-24

Applicant: MELLANOX TECHNOLOGIES, LTD.

Inventor： Bar Shapira ,  Ariel Almog ,  Dotan David Levi ,  Natan Manevich ,  Thomas Kernen ,  Liron Mula

IPC: H04J3/06

CPC classification number: H04J3/0638

Abstract: A system for maintaining a Precision Time Protocol (PTP) hardware clock, the system being operative in conjunction with a network device which is external to the system, the system comprising a controller to receive information characterizing a network peer oscillator frequency, wherein the information was extracted from an RX symbol rate, and to adjust the PTP Hardware Clock's frequency responsive to the information characterizing the network peer oscillator frequency.

公开(公告)号：US20240097876A1

公开(公告)日：2024-03-21

申请号：US18523991

申请日：2023-11-30

Applicant: MELLANOX TECHNOLOGIES, LTD.

Inventor： Dotan David Levi ,  Ariel Shahar ,  Shahaf Shuler ,  Ariel Almog ,  Eitan Hirshberg ,  Natan Manevich

IPC: H04L7/00

CPC classification number: H04L7/0091

Abstract: A communication system includes at least one send queue, containing send queue entries pointing to packets to be transmitted over a network by packet sending circuitry. A clock work queue contains clock queue entries to synchronize sending times of the packets pointed to by the send queue entries. At least one arming queue contains arming queue entries to arm the clock work queue at selected time intervals.

公开(公告)号：US20230163869A1

公开(公告)日：2023-05-25

申请号：US17534776

申请日：2021-11-24

Applicant: MELLANOX TECHNOLOGIES, LTD.

Inventor： Bar Shapira ,  Ariel Almog ,  Dotan David Levi ,  Natan Manevich ,  Thomas Kernen ,  Liron Mula

IPC: H04J3/06

CPC classification number: H04J3/0638

Abstract: A system for maintaining a Precision Time Protocol (PTP) hardware clock, the system being operative in conjunction with a network device which is external to the system, the system comprising a controller to receive information characterizing a network peer oscillator frequency, wherein the information was extracted from an RX symbol rate, and to adjust the PTP Hardware Clock's frequency responsive to the information characterizing the network peer oscillator frequency.

公开(公告)号：US11476928B2

公开(公告)日：2022-10-18

申请号：US16921993

申请日：2020-07-07

Applicant: Mellanox Technologies, Ltd.

Inventor： Dotan David Levi ,  Avi Urman ,  Lior Narkis ,  Liron Mula ,  Paraskevas Bakopoulos ,  Ariel Almog ,  Roee Moyal ,  Gal Yefet

IPC: H04B7/26 ,  H04L49/351 ,  H04L49/90 ,  H04W72/04 ,  H04W74/08

Abstract: A network element one or more network ports, network time circuitry and packet processing circuitry. The network ports are configured to communicate with a communication network. The network time circuitry is configured to track a network time defined in the communication network. In some embodiments the packet processing circuitry is configured to receive a definition of one or more timeslots that are synchronized to the network time, and to send outbound packets to the communication network depending on the timeslots. In some embodiments the packet processing circuitry is configured to process inbound packets, which are received from the communication network, depending on the timeslots.

公开(公告)号：US20220191275A1

公开(公告)日：2022-06-16

申请号：US17120313

申请日：2020-12-14

Applicant: MELLANOX TECHNOLOGIES, LTD.

Inventor： Dotan David Levi ,  Avraham Ganor ,  Arnon Sattinger ,  Natan Manevich ,  Reuven Kogan ,  Artiom Tsur ,  Ariel Almog ,  Bar Shapira

IPC: H04L29/08 ,  G06F1/12 ,  G06F1/14

Abstract: A synchronized communication system includes a plurality of network communication devices, one of which is designated as a root device and the others designated as slave devices. Each network communication device includes one or more ports and communications circuitry, which processes the communication signals received by the one or more ports so as to recover a respective remote clock from each of the signals. A synchronization circuit is integrated in the root device and provides a root clock signal, which is conveyed by clock links to the slave devices. A host processor selects one of the ports of one of the network communication devices to serve as a master port, finds a clock differential between the root clock signal and the respective remote clock recovered from the master port, and outputs, responsively to the clock differential, a control signal causing the synchronization circuit to adjust the root clock signal.

公开(公告)号：US20200162234A1

公开(公告)日：2020-05-21

申请号：US16683309

申请日：2019-11-14

Applicant: MELLANOX TECHNOLOGIES, LTD.

Inventor： Ariel Almog ,  Thomas Kernen ,  Alex Vainman ,  Nir Nitzani ,  Dotan David Levi ,  Ilan Smith ,  Rafi Wiener

IPC: H04L7/10 ,  G06F9/455

Abstract: Apparatus including a shared device in communication with a plurality of computing machines external to the shared device, the shared device including at least one PTP domain coefficient storage area, the at least one PTP domain coefficient storage area receiving a PTP coefficient from a computing machine having a PTP client, and providing the PTP coefficient to a computing machine not having a PTP client. Related apparatus and methods are also provided.

公开(公告)号：US10515066B2

公开(公告)日：2019-12-24

申请号：US15716729

申请日：2017-09-27

Applicant: Mellanox Technologies, Ltd.

Inventor： Guy Shattah ,  Ariel Almog

IPC: G06F3/06 ,  G06F16/23 ,  G06F13/16

Abstract: Described embodiments include an apparatus that includes circuitry, configured to facilitate writing to a shared memory, and a processor. The processor is configured to compute a local current-version number by incrementing a shared current-version number that is stored in the shared memory. The processor is further configured to, subsequently to computing the local current-version number, using the circuitry, atomically write at least part of the local current-version number to a portion of the shared memory that is referenced by the local current-version number. The processor is further configured to, subsequently to atomically writing the at least part of the local current-version number, store data in the shared memory in association with the at least part of the local current-version number, and subsequently to storing the data, atomically overwrite the shared current-version number with the local current-version number. Other embodiments are also described.

公开(公告)号：US20140169169A1

公开(公告)日：2014-06-19

申请号：US13717733

申请日：2012-12-18

Applicant: MELLANOX TECHNOLOGIES LTD.

Inventor： Ariel Almog ,  Yaniv Saar ,  Aviad Raveh ,  Dror Goldenberg

IPC: H04L12/56

CPC classification number: H04L47/2441 ,  H04L45/306 ,  H04L47/32

Abstract: A method for communication in a packet data network including at least first and second subnets interconnected by routers. The method includes defining at least first and second classes of link-layer traffic within the subnets, such that the link-layer traffic in the first class is transmitted among nodes in the network without loss of packets, while at least some of the packets in the second class are dropped in case of network congestion. The routers are configured by transmitting control traffic over the network in the packets of the second class. Data traffic is transmitted between the nodes in the first and second subnets via the configured routers in the packets of the first class.

Abstract translation: 一种用于在分组数据网络中进行通信的方法，包括至少由路由器互连的第一和第二子网。 该方法包括在子网内至少定义第一类和第二类链路层业务，使得第一类中的链路层业务在网络中的节点之间传输而不丢失分组，而至少一些分组在 第二类在网络拥塞的情况下被丢弃。 通过在第二类的分组中的网络上发送控制流量来配置路由器。 经由第一类数据包中配置的路由器在第一和第二子网中的节点之间传输数据流量。

公开(公告)号：US20250080315A1

公开(公告)日：2025-03-06

申请号：US18950255

申请日：2024-11-18

Applicant: MELLANOX TECHNOLOGIES, LTD.

Inventor： Dotan David Levi ,  Ariel Shahar ,  Shahaf Shuler ,  Ariel Almog ,  Eitan Hirshberg ,  Natan Manevich

IPC: H04L7/00

Abstract: A communication system includes at least one send queue, containing send queue entries pointing to packets to be transmitted over a network by packet sending circuitry. A clock work queue contains clock queue entries to synchronize sending times of the packets pointed to by the send queue entries. At least one arming queue contains arming queue entries to arm the clock work queue at selected time intervals.

公开(公告)号：US12111681B2

公开(公告)日：2024-10-08

申请号：US17313026

申请日：2021-05-06

Applicant: MELLANOX TECHNOLOGIES, LTD.

Inventor： Itai Levy ,  Dotan David Levi ,  Nir Nitzani ,  Natan Manevich ,  Alex Vaynman ,  Ariel Almog

IPC: G06F1/12 ,  G06F13/20 ,  H04L7/00

CPC classification number: G06F1/12 ,  G06F13/20 ,  H04L7/0012

Abstract: A network adapter includes a network port for communicating with a communication network, a hardware clock, and circuitry. The circuitry is coupled to receive from the communication network, via the network port, one or more time-protocol packets that convey a network time used for synchronizing network devices in the communication network, to align the hardware clock to the network time conveyed in the time-protocol packets, and to make the network time available to one or more time-service consumers running in a host served by the network adapter.