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    Switch-enhanced short loop congestion notification for TCP
    1.
    发明申请
    Switch-enhanced short loop congestion notification for TCP 审中-公开

    公开(公告)号：US20190173776A1

    公开(公告)日：2019-06-06

    申请号：US15831414

    申请日：2017-12-05

    Applicant: Mellanox Technologies, Ltd.

    Inventor： Gil Levy ,  Alex Shpiner ,  Benny Koren

    IPC: H04L12/707 ,  H04L12/803 ,  H04L12/801 ,  H04L12/833

    Abstract: A network element includes multiple ports and packet processing circuitry. The ports are configured for exchanging packets with a communication network. The packet processing circuitry is configured to forward first packets over a forward path from a source node to a destination node, to forward second packets over a reverse path, which is opposite in direction to the forward path, from the destination node to the source node, and to mark one or more of the second packets that are forwarded over the reverse path, with an indication that notifies the source node that congestion is present on the forward path.

    DEFENDING AGAINST DOS ATTACKS OVER RDMA CONNECTIONS
    2.
    发明申请
    DEFENDING AGAINST DOS ATTACKS OVER RDMA CONNECTIONS 审中-公开

    公开(公告)号：US20190028505A1

    公开(公告)日：2019-01-24

    申请号：US15652285

    申请日：2017-07-18

    Applicant: Mellanox Technologies, Ltd.

    Inventor： Alex Shpiner ,  Liran Liss ,  Matty Kadosh

    IPC: H04L29/06

    Abstract: A processor is configured to receive, from a client, a first message indicating a request to establish a connection between the client and a server, to ascertain that the first message does not include any cookie satisfying one or more criteria, to send, to the client, a second message that includes a first cookie, without allocating an endpoint on the server for the connection, in response to ascertaining that the first message does not include any cookie satisfying the criteria, to receive subsequently, from the client, a third message, to ascertain that the third message includes a second cookie, and that the second cookie satisfies the criteria, to allocate the endpoint for the connection in response to ascertaining that the second cookie satisfies the criteria, and to send, to the client, a fourth message indicating that the server is ready to receive data communication at the allocated endpoint.

    Switch-enhanced short loop congestion notification for TCP
    4.
    发明授权
    Switch-enhanced short loop congestion notification for TCP 有权

    公开(公告)号：US10778568B2

    公开(公告)日：2020-09-15

    申请号：US15831414

    申请日：2017-12-05

    Applicant: Mellanox Technologies, Ltd.

    Inventor： Gil Levy ,  Alex Shpiner ,  Benny Koren

    IPC: H04L12/707 ,  H04L12/833 ,  H04L12/801 ,  H04L12/803

    Abstract: A network element includes multiple ports and packet processing circuitry. The ports are configured for exchanging packets with a communication network. The packet processing circuitry is configured to forward first packets over a forward path from a source node to a destination node, to forward second packets over a reverse path, which is opposite in direction to the forward path, from the destination node to the source node, and to mark one or more of the second packets that are forwarded over the reverse path, with an indication that notifies the source node that congestion is present on the forward path.

    Probabilistic normalized congestion indication based on packet size
    5.
    发明授权
    Probabilistic normalized congestion indication based on packet size 有权

    公开(公告)号：US10594617B2

    公开(公告)日：2020-03-17

    申请号：US16132423

    申请日：2018-09-16

    Applicant: Mellanox Technologies, Ltd.

    Inventor： Alex Shpiner ,  Sagi Kuks ,  Liron Mula ,  Gil Levy

    IPC: H04L12/805 ,  H04L12/833 ,  H04L12/863 ,  H04L12/935 ,  H04L12/823 ,  G06F17/18

    Abstract: A network device includes circuitry and multiple ports. The circuitry is configured to hold a definition of a normalization function that determines, based on (i) a reference probability of applying a congestion indication operation to packets having a predefined reference packet-size and (ii) a packet-size parameter, a normalized probability of applying the congestion indication operation to packets whose size equals the packet-size parameter. The normalization function depends exponentially on a ratio between the packet-size parameter and the reference packet-size. The circuitry id configured to store packets in a queue, and to schedule transmission of at least some of the queued packets via an output port, to calculate the normalized probability for a given packet, by applying the normalization function to an actual reference probability and an actual size of the given packet, and randomly apply a congestion indication operation to the given packet, in accordance with the normalized probability.

    Probabilistic normalized congestion indication based on packet size
    6.
    发明申请
    Probabilistic normalized congestion indication based on packet size 审中-公开

    公开(公告)号：US20190089644A1

    公开(公告)日：2019-03-21

    申请号：US16132423

    申请日：2018-09-16

    Applicant: Mellanox Technologies, Ltd.

    Inventor： Alex Shpiner ,  Sagi Kuks ,  Liron Mula ,  Gil Levy

    IPC: H04L12/805 ,  H04L12/833 ,  H04L12/823 ,  H04L12/863 ,  H04L12/935

    CPC classification number: H04L47/36 ,  G06F17/18 ,  H04L47/31 ,  H04L47/32 ,  H04L47/50 ,  H04L49/30

    Abstract: A network device includes circuitry and multiple ports. The circuitry is configured to hold a definition of a normalization function that determines, based on (i) a reference probability of applying a congestion indication operation to packets having a predefined reference packet-size and (ii) a packet-size parameter, a normalized probability of applying the congestion indication operation to packets whose size equals the packet-size parameter. The normalization function depends exponentially on a ratio between the packet-size parameter and the reference packet-size. The circuitry id configured to store packets in a queue, and to schedule transmission of at least some of the queued packets via an output port, to calculate the normalized probability for a given packet, by applying the normalization function to an actual reference probability and an actual size of the given packet, and randomly apply a congestion indication operation to the given packet, in accordance with the normalized probability.

    Defending against DoS attacks over RDMA connections
    8.
    发明授权
    Defending against DoS attacks over RDMA connections 有权

    公开(公告)号：US10250635B2

    公开(公告)日：2019-04-02

    申请号：US15652285

    申请日：2017-07-18

    Applicant: Mellanox Technologies, Ltd.

    Inventor： Alex Shpiner ,  Liran Liss ,  Matty Kadosh

    IPC: H04L29/06

    Abstract: A processor is configured to receive, from a client, a first message indicating a request to establish a connection between the client and a server, to ascertain that the first message does not include any cookie satisfying one or more criteria, to send, to the client, a second message that includes a first cookie, without allocating an endpoint on the server for the connection, in response to ascertaining that the first message does not include any cookie satisfying the criteria, to receive subsequently, from the client, a third message, to ascertain that the third message includes a second cookie, and that the second cookie satisfies the criteria, to allocate the endpoint for the connection in response to ascertaining that the second cookie satisfies the criteria, and to send, to the client, a fourth message indicating that the server is ready to receive data communication at the allocated endpoint.

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