Abstract: A method for providing support for multi-tenancy in single root input/out virtualization (SR-IOV) enabled physical network interface controller (NIC) is provided. The NIC is associated with a host. The SR-IOV provides a physical function (PF) and a set of virtual functions (VFs) for the NIC. The method at a VF of the physical NIC, receives a mapping table of an overlay network which associates an identification of each of a set of virtual machine (VM) of a tenant on the host to an identification of a tunnel end point on the overlay network. The method receives a transmit packet from a VM connected to the VF and performs a lookup in the mapping table to identify source and destination tunnel end points associated with source and destination VMs in the packet. The method encapsulates the packet, for transmission through the tunnel end point associated with the source VM.

Abstract: A method for providing multi-tenancy support for RDMA in a system that includes a plurality of physical hosts. Each physical host hosts a set of data compute nodes (DCNs). The method, at an RDMA protocol stack of the first host, receives a packet that includes a request from a first DCN hosted on a first host for RDMA data transfer from a second DCN hosted on a second host. The method sends a set of parameters of an overlay network that are associated with the first DCN to an RDMA physical network interface controller of the first host. The set of parameters are used by the RDMA physical NIC to encapsulate the packet with an RDMA data transfer header and an overlay network header by using the set of parameters of the overlay network to transfer the encapsulated packet to the second physical host using the overlay network.

Abstract: A method for offloading packet encapsulation for an overlay network is provided. The method, at a virtualization software of a host, sends a mapping table of the overlay network to a physical network interface controller (NIC) associated with the host. The mapping table maps the identification of each of a set of virtual machine (VM) of a tenant on the host to an identification of a tunnel on the overlay network. The method, at the virtualization software, receives a packet from a VM of the tenant. The method sends the packet to the physical NIC. The method, at the physical NIC, encapsulates the packet for transmission over the overlay network by using the mapping table. The method of claim also tags the packet by the virtualization software as a packet that requires encapsulation for transmission in the overlay network prior to sending the packet to the physical NIC.

Abstract: A method for providing support for multi-tenancy in single root input/out virtualization (SR-IOV) enabled physical network interface controller (NIC) is provided. The NIC is associated with a host. The SR-IOV provides a physical function (PF) and a set of virtual functions (VFs) for the NIC. The method at a VF of the physical NIC, receives a mapping table of an overlay network which associates an identification of each of a set of virtual machine (VM) of a tenant on the host to an identification of a tunnel end point on the overlay network. The method receives a transmit packet from a VM connected to the VF and performs a lookup in the mapping table to identify source and destination tunnel end points associated with source and destination VMs in the packet. The method encapsulates the packet, for transmission through the tunnel end point associated with the source VM.