VMWARE vmxnet3 device driver
##Overview This plugin provides native PCI driver support for VMWare vmxnet3.
##Prerequisites * This code is tested with vfio-pci driver installed with Ubuntu 18.04 which has kernel version 4.15.0-33-generic.
This driver is tested with ESXi vSwitch version 6.5/6.7 for LRO/TSO support, VMware Workstation 15 Pro (no LRO/TSO), and VMware Fusion 11 Pro (no LRO/TSO)
Driver requires MSI-X interrupt support, which is not supported by uio_pci_generic driver. So vfio-pci must be used. On systems without IOMMU, vfio driver can still be used with 4.15.0-33-generic kernel (Ubuntu 18.04) which supports no-iommu mode.
load VFIO driver
sudo modprobe vfio-pci
Make sure the interface is down
sudo ifconfig <if-name> down
Steps 3 and 4 are optional. They can be accomplished by specifying the optional keyword “bind” when creating the vmxnet3 interface.
(systems without IOMMU only) enable unsafe NOIOMMU mode
echo Y | sudo tee /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
Bind interface to vfio-pci
sudo dpdk-devbind.py --bind vfio-pci 0b:00.0
Interface can be dynamically created with following CLI, with or without the bind option. If step 3 and 4 were executed, bind can be omitted.
create interface vmxnet3 0000:0b:00.0 bind set int state vmxnet3-0/b/0/0 up
Interface can be deleted with following CLI:
delete interface vmxnet3 <if-name>
Interface statistics can be displayed with
show hardware-interface <if-name> command.
Show Interface CLI
Interface and ring information can be obtained with
show vmxnet3 [if-name] [desc]