Hi, > -----Original Message----- > From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Jijiang Liu > Sent: Friday, July 03, 2015 2:58 PM > To: dev at dpdk.org > Subject: [dpdk-dev] [PATCH v2] doc/sample_app_ug:add a VXLAN sample guide > > Add a VXLAN sample guide in the sample_app_ug directory. > > It includes: > > - Add the overlay networking picture with svg format. > > - Add the TEP termination framework picture with svg format. > > - Add the tep_termination.rst file > > - Change the index.rst file for the above pictures index. > > Signed-off-by: Jijiang Liu <jijiang.liu at intel.com> > Signed-off-by: Thomas Long <thomas.long at intel.com> > > v2 changes: > optimize the two pictures > add tep_termination index in index.rst file > fix a typo and a command line > > --- > .../sample_app_ug/img/overlay_networking.svg | 786 > ++++++++++++++++++++ > .../sample_app_ug/img/tep_termination_arch.svg | 548 ++++++++++++++ > doc/guides/sample_app_ug/index.rst | 3 + > doc/guides/sample_app_ug/tep_termination.rst | 321 ++++++++ > 4 files changed, 1658 insertions(+), 0 deletions(-) > create mode 100644 doc/guides/sample_app_ug/img/overlay_networking.svg > create mode 100644 doc/guides/sample_app_ug/img/tep_termination_arch.svg > create mode 100644 doc/guides/sample_app_ug/tep_termination.rst > > diff --git a/doc/guides/sample_app_ug/img/overlay_networking.svg > b/doc/guides/sample_app_ug/img/overlay_networking.svg > new file mode 100644 > index 0000000..2ce440d > --- /dev/null > +++ b/doc/guides/sample_app_ug/img/overlay_networking.svg > @@ -0,0 +1,786 @@ > +<?xml version="1.0" encoding="UTF-8" standalone="no"?> > +<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" > "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd";> > +<!-- Generated by Microsoft Visio, SVG Export overlay_networking.svg > Page-1 --> > +<svg xmlns="http://www.w3.org/2000/svg"; > xmlns:xlink="http://www.w3.org/1999/xlink"; > xmlns:ev="http://www.w3.org/2001/xml-events"; > + > 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-131,6 +132,8 @@ Sample Applications User Guide > :numref:`figure_vm_power_mgr_highlevel` :ref:`figure_vm_power_mgr_highlev > el` > > :numref:`figure_vm_power_mgr_vm_request_seq` :ref:`figure_vm_power_mgr_vm > _request_seq` > +:numref:`figure_overlay_networking` :ref:`figure_overlay_networking` > +:numref:`figure_tep_termination_arch` :ref:`figure_tep_termination_arch` > > **Tables** > > diff --git a/doc/guides/sample_app_ug/tep_termination.rst > b/doc/guides/sample_app_ug/tep_termination.rst > new file mode 100644 > index 0000000..86df8f8 > --- /dev/null > +++ b/doc/guides/sample_app_ug/tep_termination.rst > @@ -0,0 +1,321 @@ > + > +.. BSD LICENSE > + Copyright(c) 2010-2015 Intel Corporation. All 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. > + > + > +TEP termination Sample Application > +======================== > + > +The TEP (Tunnel End point) termination sample application simulates a > VXLAN Tunnel Endpoint (VTEP) termination in DPDK, which is used to > +demonstrate the offload and filtering capabilities of Intel? XL710 10/40 > Gigabit Ethernet Controller for VXLAN packet. > +This sample uses the basic virtio devices management mechanism from vhost > example, and also uses the us-vHost interface and > +tunnel filtering mechanism to direct a specified traffic to a specific VM. > +In addition, this sample is also designed to show how tunneling protocols > can be handled. > + > +Background > +---------- > +With virtualization, overlay networks allow a network structure to be > built or imposed across physical nodes which > +is abstracted away from the actual underlining physical network > connections. This allows network isolation, QOS, etc > +to be provided on a per client basis. > + > +.. _figure_overlay_networking: > + > +.. figure:: img/overlay_networking.* > + > + Overlay Networking. > + > +In a typical setup, the network overlay tunnel is terminated at the > Virtual/Tunnel End Point (VEP/TEP). > +The TEP is normally located at the physical host level ideally in the > software switch. Due to processing constraints and > +the inevitable bottleneck that the switch becomes the ability to offload > overlay support features becomes an important requirement. > +Intel? XL710 10/40 G Ethernet network card provides hardware filtering > and offload capabilities to support overlay networks > +implementations such as MAC in UDP and MAC in GRE. > + > +Sample Code Overview > +-------------------- > + > +The DPDK TEP termination sample code demonstrates the offload and > filtering capabilities of Intel? XL710 10/40 Gigabit Ethernet > +Controller for VXLAN packet. > + > +The sample code is based on vhost library. The vhost library is developed > for user space Ethernet switch to > +easily integrate with vhost functionality. > + > +The sample will support the followings: > + > +* Tunneling packet recognition. > + > +* The port of UDP tunneling is configurable > + > +* Directing incoming traffic to the correct queue based on the tunnel > filter type. > + The supported filter type are listed below. > + > + * Inner MAC and VLAN and tenant ID > + > + * Inner MAC and tenant ID, and Outer MAC > + > + * Inner MAC and tenant ID > + > + The tenant ID will be assigned from a static internal table based on > the us-vhost device ID. > + Each device will receive a unique device ID. The inner MAC will be > learned by the first packet transmitted from a device. > + > +* Decapsulation of RX VXLAN traffic. This is a software only operation. > + > +* Encapsulation of TX VXLAN traffic. This is a software only operation. > + > +* Inner IP and inner L4 checksum offload. > + > +* TSO offload support for tunneling packet. > + > +The following figure shows the framework of the TEP termination sample > application based on vhost-cuse. > + > +.. _figure_tep_termination_arch: > + > +.. figure:: img/tep_termination_arch.* > + > + TEP termination Framework Overview > + > +Supported Distributions > +----------------------- > + > +The example in this section have been validated with the following > distributions: > + > +* Fedora* 18 > + > +* Fedora* 19 > + > +* Fedora* 20 > + > +Prerequisites > +------------- > + > +Refer to the guide in section 27.4 in the vhost sample. > + > +Compiling the Sample Code > +------------------------- > +#. Compile vhost lib: > + > + To enable vhost, turn on vhost library in the configure file > config/common_linuxapp. > + > + .. code-block:: console > + > + CONFIG_RTE_LIBRTE_VHOST=n > + > + vhost user is turned on by default in the configure file > config/common_linuxapp. > + To enable vhost cuse, disable vhost user. > + > + .. code-block:: console > + > + CONFIG_RTE_LIBRTE_VHOST_USER=y > + > + After vhost is enabled and the implementation is selected, build the > vhost library. > + > +#. Go to the examples directory: > + > + .. code-block:: console > + > + export RTE_SDK=/path/to/rte_sdk > + cd ${RTE_SDK}/examples/tep_termination > + > +#. Set the target (a default target is used if not specified). For > example: > + > + .. code-block:: console > + > + export RTE_TARGET=x86_64-native-linuxapp-gcc > + > + See the DPDK Getting Started Guide for possible RTE_TARGET values. > + > +#. Build the application: > + > + .. code-block:: console > + > + cd ${RTE_SDK} > + make config ${RTE_TARGET} > + make install ${RTE_TARGET} > + cd ${RTE_SDK}/examples/tep_termination > + make > + > +#. Go to the eventfd_link directory(vhost cuse required): > + > + .. code-block:: console > + > + cd ${RTE_SDK}/lib/librte_vhost/eventfd_link > + > +#. Build the eventfd_link kernel module(vhost cuse required): > + > + .. code-block:: console > + > + make > + > +Running the Sample Code > +----------------------- > + > +#. Install the cuse kernel module(vhost cuse required): > + > + .. code-block:: console > + > + modprobe cuse > + > +#. Go to the eventfd_link directory(vhost cuse required): > + > + .. code-block:: console > + > + export RTE_SDK=/path/to/rte_sdk > + cd ${RTE_SDK}/lib/librte_vhost/eventfd_link > + > +#. Install the eventfd_link module(vhost cuse required): > + > + .. code-block:: console > + > + insmod ./eventfd_link.ko > + > +#. Go to the examples directory: > + > + .. code-block:: console > + > + export RTE_SDK=/path/to/rte_sdk > + cd ${RTE_SDK}/examples/tep_termination > + > +#. Run the tep_termination sample code: > + > + .. code-block:: console > + > + user at target:~$ ./build/app/tep_termination -c f -n 4 --huge-dir > /mnt/huge -- > + -p 0x1 --dev-basename tep-termination --nb- > devices 4 > + --udp-port 4789 --filter-type 1 > + > +.. note:: > + > + Please note the huge-dir parameter instructs the DPDK to allocate its > memory from the 2 MB page hugetlbfs. > + > +Parameters > +~~~~~~~~~~ > + > +**The same parameters with the vhost sample.** > + > +Refer to the guide in section 27.6.1 in the vhost sample for the meanings > of 'Basename', > +'Stats', 'RX Retry', 'RX Retry Number' and 'RX Retry Delay Time'. > + > +**Number of Devices.** > + > +The nb-devices option specifies the number of virtIO device. > +The default value is 2. > + > +.. code-block:: console > + > + user at target:~$ ./build/app/tep_termination -c f -n 4 --huge-dir > /mnt/huge -- > + --nb-devices 2 > + > +**Tunneling UDP port.** > + > +The udp-port option is used to specify the destination UDP number for UDP > tunneling packet. > +The default value is 4789. > + > +.. code-block:: console > + > + user at target:~$ ./build/app/tep_termination -c f -n 4 --huge-dir > /mnt/huge -- > + --nb-devices 2 --udp-port 4789 > + > +**Filter Type.** > + > +The filter-type option is used to specify which filter type is used to > filter UDP tunneling packet to a specified queue. > +The default value is 1, which means the filter type of inner MAC and > tenant ID is used. > + > +.. code-block:: console > + > + user at target:~$ ./build/app/tep_termination -c f -n 4 --huge-dir > /mnt/huge -- > + --nb-devices 2 --udp-port 4789 --filter-type 1 > + > +**TX Checksum.** > + > +The tx-checksum option is used to enable or disable the inner header > checksum offload. > +The default value is 0, which means the checksum offload is disabled. > + > +.. code-block:: console > + > + user at target:~$ ./build/app/tep_termination -c f -n 4 --huge-dir > /mnt/huge -- > + --nb-devices 2 --tx-checksum > + > +**TCP segment sise.** > + > +The tso-segsz option specifies the TCP segment size for TSO offload for > tunneling packet. > +The default value is 0, which means TSO offload is disabled. > + > +.. code-block:: console > + > + user at target:~$ ./build/app/tep_termination -c f -n 4 --huge-dir > /mnt/huge -- > + --tx-checksum --tso-segsz 800 > + > +**Decapsulation option.** > + > +The decap option is used to enable or disable decapsulation operation for > received VXLAN packet. > +The default value is 1. > + > +.. code-block:: console > + > + user at target:~$ ./build/app/tep_termination -c f -n 4 --huge-dir > /mnt/huge -- > + --nb-devices 4 --udp-port 4789 --decap 1 > + > +**Encapsulation option.** > + > +The encap option is used to enable or disable encapsulation operation for > transmitted packet. > +The default value is 1. > + > +.. code-block:: console > + > + user at target:~$ ./build/app/tep_termination -c f -n 4 --huge-dir > /mnt/huge -- > + --nb-devices 4 --udp-port 4789 --encap 1 > + > + > +Running the Virtual Machine (QEMU) > +---------------------------------- > + > +Refer to the guide in section 27.7 in the vhost sample. > + > +Running DPDK in the Virtual Machine > +----------------------------------- > + > +Refer to the guide in section 27.8 in the vHost sample. > + > +Passing Traffic to the Virtual Machine Device > +--------------------------------------------- > + > +For a virtio-net device to receive traffic, the traffic's Layer 2 header > must include > +both the virtio-net device's MAC address. > +The DPDK sample code behaves in a similar manner to a learning switch in > that > +it learns the MAC address of the virtio-net devices from the first > transmitted packet. > +On learning the MAC address, > +the DPDK vhost sample code prints a message with the MAC address and > tenant ID virtio-net device. > +For example: > + > +.. code-block:: console > + > + DATA: (0) MAC_ADDRESS cc:bb:bb:bb:bb:bb and VNI 1000 registered > + > +The above message indicates that device 0 has been registered with MAC > address cc:bb:bb:bb:bb:bb and VNI 1000. > +Any packets received on the NIC with these values are placed on the > devices receive queue. > --
Acked-by: Marvin Liu <yong.liu at intel.com> > 1.7.7.6
