公开(公告)号：US11736413B2

公开(公告)日：2023-08-22

申请号：US17149760

申请日：2021-01-15

Applicant: VMware, Inc.

Inventor： Yong Wang ,  Boon Seong Ang ,  Wenyi Jiang ,  Guolin Yang

IPC: H04L49/1546 ,  H04L69/22 ,  H04L49/00 ,  H04L9/06 ,  H04L9/40 ,  H04L45/7453

CPC classification number: H04L49/3063 ,  H04L9/0643 ,  H04L45/7453 ,  H04L63/20 ,  H04L69/22 ,  H04L2212/00

Abstract: Example methods and systems for a programmable virtual network interface controller (VNIC) to perform packet processing are described. In one example, the programmable VNIC may modify a packet processing pipeline based on the instruction. The modification may include injecting a second packet processing stage among the multiple first packet processing stages of the packet processing pipeline. In response to detecting an ingress packet that requires processing by the programmable VNIC, the ingress packet may be steered towards the modified packet processing pipeline. The ingress packet may then be processed using the modified packet processing pipeline by performing the second packet processing stage (a) to bypass at least one of the multiple first processing stages, or (b) in addition to the multiple first processing stages.

公开(公告)号：US20220103488A1

公开(公告)日：2022-03-31

申请号：US17091663

申请日：2020-11-06

Applicant: VMware, Inc.

Inventor： Yong Wang ,  Boon S. Ang ,  Guolin Yang ,  Wenyi Jiang

IPC: H04L12/933

Abstract: Some embodiments of the invention provide a method for configuring multiple hardware offload units of a host computer to perform operations on packets associated with machines (e.g., virtual machines or containers) executing on the host computer and to pass the packets between each other efficiently. For instance, in some embodiments, the method configures a program executing on the host computer to identify a first hardware offload unit that has to perform a first operation on a packet associated with a particular machine and to provide the packet to the first hardware offload unit. The packet in some embodiments is a packet that the particular machine has sent to a destination machine on the network, or is a packet received from a source machine through a network and destined to the particular machine.

公开(公告)号：US20220103487A1

公开(公告)日：2022-03-31

申请号：US17114994

申请日：2020-12-08

Applicant: VMware, Inc.

Inventor： Boon S. Ang ,  Wenyi Jiang ,  Guolin Yang ,  Jin Heo ,  Srividya Murali

IPC: H04L12/927 ,  H04L12/911 ,  H04L12/721 ,  H04L12/935

Abstract: Some embodiments of the invention provide a method for configuring a physical network card or physical network controller (pNIC) to provide flow processing offload (FPO) for a host computer connected to the pNIC. The host computers host a set of compute nodes in a virtual network. The set of compute nodes are each associated with a set of interfaces that are each assigned a locally-unique virtual port identifier (VPID) by a flow processing and action generator. The pNIC includes a set of interfaces that are assigned physical port identifiers (PPIDs) by the pNIC. The method includes providing the pNIC with a set of mappings between VPIDs and PPIDs. The method also includes sending updates to the mappings as compute nodes migrate, connect to different interfaces of the pNIC, are assigned different VPIDs, etc. In some embodiments, the flow processing and action generator executes on processing units of the host computer, while in other embodiments, the flow processing and action generator executes on a set of processing units of a pNIC that includes flow processing hardware and a set of programmable processing units.

公开(公告)号：US11025546B2

公开(公告)日：2021-06-01

申请号：US16045690

申请日：2018-07-25

Applicant: VMware, Inc.

Inventor： Aditya G. Holla ,  Wenyi Jiang ,  Rajeev Nair ,  Srikar Tati ,  Boon Ang ,  Kairav Padarthy

IPC: H04L12/743 ,  H04L12/803 ,  H04L12/861 ,  H04L12/863 ,  H04L29/06 ,  H04L12/935 ,  H04L12/931

Abstract: Some embodiments provide a method for selecting a transmit queue of a network interface card (NIC) of a host computer for an outbound data message. The NIC includes multiple transmit queues and multiple receive queues. Each of the transmit queues is individually associated with a different receive queue, and the MC performs a load balancing operation to distribute inbound data messages among multiple receive queues. The method extracts a set of header values from a header of the outbound data message. The method uses the extracted set of header values to identify a receive queue which the NIC would select for a corresponding inbound data message upon which the NIC performed the load balancing operation. The method selects a transmit queue associated with the identified receive queue to process the outbound data message.

公开(公告)号：US11811559B2

公开(公告)日：2023-11-07

申请号：US16934019

申请日：2020-07-21

Applicant: VMware, Inc.

Inventor： Wenyi Jiang ,  Boon Seong Ang ,  Guolin Yang ,  Ying Gross

IPC: H04L12/46 ,  H04L41/0893 ,  H04L43/028 ,  H04L49/00 ,  G06F9/455

CPC classification number: H04L12/4645 ,  G06F9/45558 ,  H04L12/4633 ,  H04L41/0893 ,  H04L43/028 ,  H04L49/70 ,  G06F2009/45579 ,  G06F2009/45595

Abstract: Example methods and systems for logical network packet handling are described. In one example, a physical network interface controller (PNIC) may receive an egress packet associated with a packet flow via a first virtual function supported by the PNIC. The PNIC may steer the egress packet towards a processing pipeline by applying a filter associated with the first virtual function or content of the egress packet, or both. The egress packet may be processed using the processing pipeline to generate a processed packet by (a) retrieving a logical network policy associated with the packet flow from a datastore on the PNIC and (b) performing one or more actions according to the logical network policy. The processed packet may be forwarded towards the destination via a second virtual function supported by the PNIC or a physical network connected to the PNIC.

公开(公告)号：US20220103478A1

公开(公告)日：2022-03-31

申请号：US17114975

申请日：2020-12-08

Applicant: VMware, Inc.

Inventor： Boon S. Ang ,  Wenyi Jiang ,  Guolin Yang ,  Jin Heo ,  Srividya Murali

IPC: H04L12/801 ,  H04L12/931 ,  H04L12/933

Abstract: Some embodiments of the invention provide a method for providing flow processing offload (FPO) for a host computer at a physical network interface card (pNIC) connected to the host computer. A set of compute nodes executing on the host computer are each associated with a set of interfaces that are each assigned a locally-unique virtual port identifier (VPID) by a flow processing and action generator. The pNIC includes a set of interfaces that are assigned physical port identifiers (PPIDs) by the pNIC. The method includes receiving a data message at an interface of the pNIC and matching the data message to a stored flow entry that specifies a destination using a VPID. The method also includes identifying, using the VPID, a PPID as a destination of the received data message by performing a lookup in a mapping table storing a set of VPIDs and a corresponding set of PPIDs and forwarding the data message to an interface of the pNIC associated with the identified PPID.

公开(公告)号：US11245629B2

公开(公告)日：2022-02-08

申请号：US16925238

申请日：2020-07-09

Applicant: VMware, Inc.

Inventor： Subin Cyriac Mathew ,  Dileep Devireddy ,  Alexander Tessmer ,  Wenyi Jiang ,  Chidambareswaran Raman

IPC: H04L12/803 ,  H04L12/741 ,  H04L29/08 ,  H04L29/06

Abstract: In some embodiments, a method determines when a packet is fragmented into multiple fragmented packets in a flow between a first workload and a second workload. The method switches from generating an outer source port in the outer header using layer 4 information from the inner header to using layer 3 information from the inner header. A fragmented packet is encapsulated with the outer header that includes an outer source port value that is generated using the layer 3 information. The method initiates a process to determine when to switch back to using layer 4 information from the inner header to generate the outer source port. When it is determined to switch back to using layer 4 information, the method switches back to using layer 4 information from the inner header to generate the source port in the outer header of a packet from the first workload.

公开(公告)号：US20210126848A1

公开(公告)日：2021-04-29

申请号：US16661879

申请日：2019-10-23

Applicant: VMware, Inc.

Inventor： Yong Wang ,  Boon Ang ,  Guolin Yang ,  Wenyi Jiang

IPC: H04L12/26 ,  H04L12/46 ,  H04L29/08 ,  H04L12/24

Abstract: Some embodiments provide a method for monitoring the status of a network connection between first and second host computers. The method is performed in some embodiments by a tunnel monitor executing on the first host computer that also separately executes a machine, where the machine uses a tunnel to send and receive messages to and from the second host computer. The method establishes a liveness channel with the machine to iteratively determine whether the first machine is operational. The method further establishes a monitoring session with the second host computer to iteratively determine whether the tunnel is operational. When a determination is made through the liveness channel that the machine is no longer operational, the method terminates the monitoring session with the second host computer. When a determination is made that the tunnel is no longer operational, the method notifies the machine through the liveness channel.

公开(公告)号：US10965601B2

公开(公告)日：2021-03-30

申请号：US16110909

申请日：2018-08-23

Applicant: VMware, Inc.

Inventor： Wenyi Jiang ,  Guolin Yang ,  Boon Seong Ang ,  Ying Gross

IPC: G06F9/455 ,  H04L12/851 ,  H04L29/06 ,  H04L12/749

Abstract: A method for a sender side assisted flow classification is disclosed. In an embodiment, a method comprises detecting a packet by a network virtualization layer engine implemented in a hypervisor on a sender side of a virtualization computer system; and determining, by the network virtualization layer engine, whether the packet requires special processing. In response to determining that the packet requires special processing, a special processing flag is inserted in a certain field of an outer header of the packet; and the packet is forwarded toward a destination of the packet for a PNIC on a receiver side to process the packet.

公开(公告)号：US20200028792A1

公开(公告)日：2020-01-23

申请号：US16043127

申请日：2018-07-23

Applicant: VMware, Inc.

Inventor： Aditya G. Holla ,  Rishi Mehta ,  Boon Ang ,  Rajeev Nair ,  Wenyi Jiang

IPC: H04L12/863 ,  H04L12/803 ,  G06F9/455

Abstract: Some embodiments provide a method for managing multiple queues of a network interface card (NIC) of a host computer that executes a data compute node (DCN). The method defines first, second, and third subsets of the queues. The first subset of queues is associated with a first feature for processing data messages received by the NIC, the second subset of queues is associated with a second feature, and the third subset is associated with both features. The method receives a request from the DCN to process data messages addressed to the DCN using both the first and second features. The method configures the NIC to direct data messages received for the DCN to a queue that is selected from the third subset of queues.