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-# Intel AVF device plugin for VPP    {#avf_plugin_doc}
-
-##Overview
-This plugins provides native device support for intel Adaptive Virtual
-Function (AVF). AVF is driver specification for current and future
-Intel Virtual Function devices. AVF defines communication channel between
-Physical Functions (PF) and VF.
-In essence, today this driver can be used only with 
-Intel XL710 / X710 / XXV710 adapters.
-
-##Prerequisites
- * Driver requires newer i40e PF linux driver to be installed on the system,
-which supports virtualchnl interface. This code is tested with i40e driver
-version 2.4.6.
-
-* Driver requires MSI-X interrupt support, which is not supported by
-uio_pci_generic driver, so vfio-pci needs to be used. On systems without IOMMU
-vfio driver can still be used with recent kernels which support no-iommu mode.
-
-##Known issues
-This driver is still in experimental phase, however it shows very good 
-performance numbers.
-
-## Usage
-### System setup
-
-1. load VFIO driver
-```
-sudo modprobe vfio-pci
-```
-
-2. (systems without IOMMU only) enable unsafe NOIOMMU mode
-```
-echo Y | sudo tee /sys/module/vfio/parameters/enable_unsafe_noiommu_mode
-```
-
-3. Create and bind SR-IOV virtual function(s)
-
-Following script creates VF, assigns MAC address and binds VF to vfio-pci
-```bash
-#!/bin/bash
-
-if [ $USER != "root" ] ; then
-	echo "Restarting script with sudo..."
-	sudo $0 ${*}
-	exit
-fi
-
-setup () {
-  cd /sys/bus/pci/devices/${1}
-  driver=$(basename $(readlink driver))
-  if [ "${driver}" != "i40e" ]; then
-    echo ${1} | tee driver/unbind
-    echo ${1} | tee /sys/bus/pci/drivers/i40e/bind
-  fi
-  ifname=$(basename net/*)
-  echo 0 | tee sriov_numvfs > /dev/null
-  echo 1 | tee sriov_numvfs > /dev/null
-  ip link set dev ${ifname} vf 0 mac ${2}
-  ip link show dev ${ifname}
-  vf=$(basename $(readlink virtfn0))
-  echo ${vf} | tee virtfn0/driver/unbind
-  echo vfio-pci | tee virtfn0/driver_override
-  echo ${vf} | sudo tee /sys/bus/pci/drivers/vfio-pci/bind
-  echo  | tee virtfn0/driver_override
-}
-
-# Setup one VF on PF 0000:3b:00.0 and assign MAC address
-setup 0000:3b:00.0 00:11:22:33:44:00
-# Setup one VF on PF 0000:3b:00.1 and assign MAC address
-setup 0000:3b:00.1 00:11:22:33:44:01
-```
-
-### Promisc mode
-In cases when interface is used in the L2 mode or promisc mode is needed for some other reason,
-trust needs to be set to "on" using the linux "ip link" utility.
-```
-ip link set dev <PF inteface name> vf <VF id> trust on
-```
-
-### L2 spoofing check
-By default Virtual Function is not allowed to send ethernet frames which
-have source MAC address different than address assigned to the VF.
-In some cases it is expected that VPP will send such frames (e.g. L2 bridging,
-bonding, l2 cross-connect) and in such cases spoof chack needs to be turned
-off by issuing following command:
-```
-ip link set dev <PF inteface name> vf <VF id> spoofchk off
-```
-
-### Interface Creation
-Interfaces can be dynamically created by using following CLI:
-```
-create interface avf 0000:3b:02.0
-set int state avf-0/3b/2/0 up
-```
-
-### Interface Deletion
-Interface can be deleted with following CLI:
-```
-delete interface avf <interface name>
-```
-
-### Interface Statistics
-Interface statistics can be displayed with `sh hardware-interface <if-name>`
-command.
-