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    RDMA with virtual address space
    2.
    发明授权
    RDMA with virtual address space 有权

    公开(公告)号：US10831523B2

    公开(公告)日：2020-11-10

    申请号：US16154363

    申请日：2018-10-08

    Applicant: MICROSOFT TECHNOLOGY LICENSING, LLC

    Inventor： Alec Kochevar-Cureton ,  Somesh Chaturmohta ,  Norman C. Lam ,  Sambhrama Madhusudhan Mundkur ,  Daniel M. Firestone

    IPC: G06F9/46 ,  G06F9/455 ,  G06F15/173 ,  H04L12/46

    Abstract: Techniques are disclosed for implementing direct memory access in a virtualized computing environment. A memory access policy of the virtualized computing environment is applied to a direct memory access connection request received from a first virtual machine via an exception path. The request is flagged to indicate that the request has been processed and the request is forwarded to a network interface device configured to execute offloaded network functions for one or more virtual machines. A memory access policy of the virtualized computing environment is applied to a direct memory access connection reply received from a second virtual machine on the exception path. The reply is flagged to indicate that the reply has been processed and the reply is forwarded to the network interface device. A direct memory access connection is established between first and second virtual machines in accordance with the request.

    Route anomaly detection and remediation
    3.
    发明授权
    Route anomaly detection and remediation 有权

    公开(公告)号：US11418429B2

    公开(公告)日：2022-08-16

    申请号：US16830082

    申请日：2020-03-25

    Applicant: Microsoft Technology Licensing, LLC

    Inventor： Somesh Chaturmohta ,  Gary R. Ratterree ,  Alireza Khoshgoftarmonfared ,  Venkata Praneeth Naidu Sanapathi ,  Gaurav Thareja ,  Mark A. Kasten ,  Scott W. Hanberg

    IPC: H04L45/28 ,  H04L43/10 ,  H04L45/00 ,  H04L43/06 ,  H04L45/02

    Abstract: A route anomaly detection and remediation system analyzes a prefix for each route received to validate the route. A route monitoring component provides a centralized querying system for all routers from all devices to study routing history. A route collection component receives and stores all routes from multiple routers at a server. A set of microservice analysis components performs prefix analysis on each received route. Each microservice analysis component analyzes one or more portions of the prefix for each route to detect hijacked routes, leaked routes, withdrawn routes and/or other unhealthy routes before the routes are utilized for routing traffic on the network. The analysis performs new prefix validation and identifies healthy routes. Alerts identifying invalid routes are transmitted to an incident management system. Healthy routes are approved for usage by routers on the network to prevent network outages while improving network reliability, availability and stability.

    NETWORK TRAFFIC RATE LIMITING IN COMPUTING SYSTEMS
    6.
    发明申请
    NETWORK TRAFFIC RATE LIMITING IN COMPUTING SYSTEMS 审中-公开

    公开(公告)号：US20190081899A1

    公开(公告)日：2019-03-14

    申请号：US15907546

    申请日：2018-02-28

    Applicant: Microsoft Technology Licensing, LLC

    Inventor： Sambhrama Mundkur ,  Fengfen Liu ,  Norman Lam ,  Andrew Putnam ,  Somesh Chaturmohta ,  Daniel Firestone

    IPC: H04L12/801 ,  H04L12/861 ,  H04L12/935 ,  H04L12/911

    Abstract: Distributed computing systems, devices, and associated methods of packet routing are disclosed herein. In one embodiment, a computing device includes a field programmable gate array (“FPGA”) that includes an inbound processing path and outbound processing path in opposite processing directions. The inbound processing path can forward a packet received from the computer network to a buffer on the FPGA instead of the NIC. The outbound processing path includes an outbound multiplexer having a rate limiter circuit that only forwards the received packet from the buffer back to the computer network when a virtual port corresponding to the packet has sufficient transmission allowance. The outbound multiplexer can also periodically increment the transmission allowance based on a target bandwidth for the virtual port.

    REMOTE DIRECT MEMORY ACCESS IN COMPUTING SYSTEMS
    7.
    发明申请
    REMOTE DIRECT MEMORY ACCESS IN COMPUTING SYSTEMS 审中-公开

    公开(公告)号：US20190079897A1

    公开(公告)日：2019-03-14

    申请号：US15824925

    申请日：2017-11-28

    Applicant: Microsoft Technology Licensing, LLC

    Inventor： Alec Kochevar-Cureton ,  Somesh Chaturmohta ,  Norman Lam ,  Sambhrama Mundkur ,  Daniel Firestone

    IPC: G06F15/173 ,  H04L29/06 ,  G06F9/455

    Abstract: Distributed computing systems, devices, and associated methods of remote direct memory access (“RDMA”) packet routing are disclosed herein. In one embodiment, a server includes a main processor, a network interface card (“NIC”), and a field programmable gate array (“FPGA”) operatively coupled to the main processor via the NIC. The FPGA includes an inbound processing path having an inbound packet buffer configured to receive an inbound packet from the computer network, a NIC buffer, and a multiplexer between the inbound packet buffer and the NIC, and between the NIC buffer and the NIC. The FPGA also includes an outbound processing path having an outbound action circuit having an input to receive the outbound packet from the NIC, a first output to the computer network, and a second output to the NIC buffer in the inbound processing path.

    RDMA with virtual address space
    8.
    发明授权
    RDMA with virtual address space 有权

    公开(公告)号：US11360800B2

    公开(公告)日：2022-06-14

    申请号：US17063662

    申请日：2020-10-05

    Applicant: MICROSOFT TECHNOLOGY LICENSING, LLC

    Inventor： Alec Kochevar-Cureton ,  Somesh Chaturmohta ,  Norman C. Lam ,  Sambhrama Madhusudhan Mundkur ,  Daniel M. Firestone

    IPC: G06F9/46 ,  G06F9/455 ,  G06F15/173 ,  H04L12/46

    Abstract: Techniques are disclosed for implementing direct memory access in a virtualized computing environment. A memory access policy of the virtualized computing environment is applied to a direct memory access connection request received from a first virtual machine via an exception path. The request is flagged to indicate that the request has been processed and the request is forwarded to a network interface device configured to execute offloaded network functions for one or more virtual machines. A memory access policy of the virtualized computing environment is applied to a direct memory access connection reply received from a second virtual machine on the exception path. The reply is flagged to indicate that the reply has been processed and the reply is forwarded to the network interface device. A direct memory access connection is established between first and second virtual machines in accordance with the request.

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