[dpdk-dev] [PATCH v6 14/14] doc: adds information related to the AVP PMD
Allain Legacy
allain.legacy at windriver.com
Tue Mar 28 13:54:09 CEST 2017
Updates the documentation and feature lists for the AVP PMD device.
Signed-off-by: Allain Legacy <allain.legacy at windriver.com>
Signed-off-by: Matt Peters <matt.peters at windriver.com>
Acked-by: John McNamara <john.mcnamara at intel.com>
---
MAINTAINERS | 1 +
doc/guides/nics/avp.rst | 111 +++++++++++++++++++++++++++++++++
doc/guides/nics/index.rst | 1 +
doc/guides/rel_notes/release_17_05.rst | 4 ++
4 files changed, 117 insertions(+)
create mode 100644 doc/guides/nics/avp.rst
diff --git a/MAINTAINERS b/MAINTAINERS
index e3ac0e383..522f4194f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -417,6 +417,7 @@ Wind River AVP PMD
M: Allain Legacy <allain.legacy at windriver.com>
M: Matt Peters <matt.peters at windriver.com>
F: drivers/net/avp
+F: doc/guides/nics/avp.rst
Crypto Drivers
diff --git a/doc/guides/nics/avp.rst b/doc/guides/nics/avp.rst
new file mode 100644
index 000000000..1fcba66ce
--- /dev/null
+++ b/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
diff --git a/doc/guides/nics/index.rst b/doc/guides/nics/index.rst
index 87f933495..0ddcea512 100644
--- a/doc/guides/nics/index.rst
+++ b/doc/guides/nics/index.rst
@@ -36,6 +36,7 @@ Network Interface Controller Drivers
:numbered:
overview
+ avp
bnx2x
bnxt
cxgbe
diff --git a/doc/guides/rel_notes/release_17_05.rst b/doc/guides/rel_notes/release_17_05.rst
index 2a045b3e2..34d0dac0b 100644
--- a/doc/guides/rel_notes/release_17_05.rst
+++ b/doc/guides/rel_notes/release_17_05.rst
@@ -55,6 +55,10 @@ New Features
sPAPR IOMMU based pci probing enabled for vfio-pci devices.
+* **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.
Resolved Issues
---------------
--
2.12.1
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