doc: add AVP

Updates the documentation and feature lists for the AVP PMD device.

Signed-off-by: Allain Legacy <allain.legacy@windriver.com>
Signed-off-by: Matt Peters <matt.peters@windriver.com>
Acked-by: John McNamara <john.mcnamara@intel.com>
Acked-by: Vincent Jardin <vincent.jardin@6wind.com>

MAINTAINERS

@@ -407,6 +407,7 @@ Wind River AVP
 M: Allain Legacy <allain.legacy@windriver.com>
 M: Matt Peters <matt.peters@windriver.com>
 F: drivers/net/avp/
+F: doc/guides/nics/avp.rst
 
 PCAP PMD
 M: Ferruh Yigit <ferruh.yigit@intel.com>

doc/guides/nics/avp.rst

@@ -0,0 +1,111 @@
+..  BSD LICENSE
+    Copyright(c) 2017 Wind River Systems, Inc. rights reserved.
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+    * Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+    * Neither the name of Intel Corporation nor the names of its
+    contributors may be used to endorse or promote products derived
+    from this software without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+    OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+AVP Poll Mode Driver
+=================================================================
+
+The Accelerated Virtual Port (AVP) device is a shared memory based device
+only available on `virtualization platforms <http://www.windriver.com/products/titanium-cloud/>`_
+from Wind River Systems.  The Wind River Systems virtualization platform
+currently uses QEMU/KVM as its hypervisor and as such provides support for all
+of the QEMU supported virtual and/or emulated devices (e.g., virtio, e1000,
+etc.).  The platform offers the virtio device type as the default device when
+launching a virtual machine or creating a virtual machine port.  The AVP device
+is a specialized device available to customers that require increased
+throughput and decreased latency to meet the demands of their performance
+focused applications.
+
+The AVP driver binds to any AVP PCI devices that have been exported by the Wind
+River Systems QEMU/KVM hypervisor.  As a user of the DPDK driver API it
+supports a subset of the full Ethernet device API to enable the application to
+use the standard device configuration functions and packet receive/transmit
+functions.
+
+These devices enable optimized packet throughput by bypassing QEMU and
+delivering packets directly to the virtual switch via a shared memory
+mechanism.  This provides DPDK applications running in virtual machines with
+significantly improved throughput and latency over other device types.
+
+The AVP device implementation is integrated with the QEMU/KVM live-migration
+mechanism to allow applications to seamlessly migrate from one hypervisor node
+to another with minimal packet loss.
+
+
+Features and Limitations of the AVP PMD
+---------------------------------------
+
+The AVP PMD driver provides the following functionality.
+
+*   Receive and transmit of both simple and chained mbuf packets,
+
+*   Chained mbufs may include up to 5 chained segments,
+
+*   Up to 8 receive and transmit queues per device,
+
+*   Only a single MAC address is supported,
+
+*   The MAC address cannot be modified,
+
+*   The maximum receive packet length is 9238 bytes,
+
+*   VLAN header stripping and inserting,
+
+*   Promiscuous mode
+
+*   VM live-migration
+
+*   PCI hotplug insertion and removal
+
+
+Prerequisites
+-------------
+
+The following prerequisites apply:
+
+*   A virtual machine running in a Wind River Systems virtualization
+    environment and configured with at least one neutron port defined with a
+    vif-model set to "avp".
+
+
+Launching a VM with an AVP type network attachment
+--------------------------------------------------
+
+The following example will launch a VM with three network attachments.  The
+first attachment will have a default vif-model of "virtio".  The next two
+network attachments will have a vif-model of "avp" and may be used with a DPDK
+application which is built to include the AVP PMD driver.
+
+.. code-block:: console
+
+    nova boot --flavor small --image my-image \
+       --nic net-id=${NETWORK1_UUID} \
+       --nic net-id=${NETWORK2_UUID},vif-model=avp \
+       --nic net-id=${NETWORK3_UUID},vif-model=avp \
+       --security-group default my-instance1

doc/guides/nics/index.rst

@@ -36,6 +36,7 @@ Network Interface Controller Drivers
     :numbered:
 
     overview
+    avp
     bnx2x
     bnxt
     cxgbe

doc/guides/rel_notes/release_17_05.rst

@@ -121,6 +121,11 @@ New Features
 
   Added poll mode driver support for Cavium LiquidIO II server adapter VFs.
 
+* **Added support for the Wind River Systems AVP PMD.**
+
+  Added a new networking driver for the AVP device type. Theses devices are
+  specific to the Wind River Systems virtualization platforms.
+
 * **Added vmxnet3 version 3 support.**
 
   Added support for vmxnet3 version 3 which includes several