Methods and apparatus for enhancing virtual switch capabilities in a direct-access configured network interface card

A system configured to hosting a virtual computing environment for data communication, comprising:

• a plurality of virtual machines (“VMs”) configured to emulate a plurality of individual computers capable of executing instructions independently;
• a hypervisor coupled to the plurality of VMs and configured to have a virtual switch (“vSwitch”) and an overlay manager able to generate point-to-point connections via overlay encapsulations;
• and
• a direct-access configured network interface controller (“DCN”) coupled to the plurality of VMs and configured to have an embedded switch (“eSwitch”), wherein the eSwitch is able to forward data packets back to the hypervisor through the vSwitch based on characteristic of data packets for accessing packet encapsulation capabilities offered by the hypervisor.

A method for facilitating network communication via a network interface controller (“NIC”), comprising:

• transmitting a packet stream from an embedded switch (“eSwitch”) of a direct-access configured NIC (“DCN”) to a virtual switch (“vSwitch”) of hypervisor via a virtual switch port in accordance with destination of the packet stream;
• reformatting the packet stream based on an overlay encapsulation by an overlay manager of hypervisor for establishing a point-to-point (“PTP”) connection through an overlay network;
• retransmitting reformatted packet stream from the vSwitch to the eSwitch via the virtual switch port;
• and
• forwarding the packet stream to its destination through the overlay network via a physical input and output (“I/O”) port of the DCN.