From: Jijiang Liu Date: Fri, 3 Jul 2015 06:58:17 +0000 (+0800) Subject: doc: add a VXLAN sample guide X-Git-Tag: spdx-start~8609 X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=181654b7162eea21d5a1d9de8864982573629ef9;p=dpdk.git doc: 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 Signed-off-by: Thomas Long Acked-by: Marvin Liu --- 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 0000000000..caf1c264e5 --- /dev/null +++ b/doc/guides/sample_app_ug/img/overlay_networking.svg @@ -0,0 +1,1847 @@ + + + +image/svg+xmlPage-1Rounded rectangleHostHost +Rounded rectangle.10VMVM +Rounded rectangle.11VNID 100VNID 100 +ObjectIP NetworkIP Network +Rounded rectangle.1VMVM +Rounded rectangle.22VNID 101VNID 101 +Rounded rectangle.23HostHost +Rounded rectangle.24VMVM +Rounded rectangle.25VNID 100VNID 100 +Rounded rectangle.31VMVM +Rounded rectangle.32VNID 101VNID 101 +Rounded rectangle.34HostHost +Rounded rectangle.35VMVM +Rounded rectangle.36VNID 100VNID 100 +Rounded rectangle.37VMVM +Rounded rectangle.38VNID 101VNID 101 +Rounded rectangle.40HostHost +Rounded rectangle.41VMVM +Rounded rectangle.42VNID 100VNID 100 +Rounded rectangle.43VMVM +Rounded rectangle.44VNID 102VNID 102 +Rounded rectangle.46VNID 102VNID 102 +Rounded rectangle.47VMVM +Arced arrowArced arrow.49Arced arrow.50Sheet.4Sheet.5Sheet.6Sheet.7Sheet.8Sheet.13Sheet.15Sheet.16Sheet.17Sheet.18Sheet.19Sheet.20Sheet.21Arced arrow.68Arced arrow.70Sheet.84TEPTEP +Sheet.86TEPTEP +Sheet.87TEPTEP +Sheet.88TEPTEP + \ No newline at end of file diff --git a/doc/guides/sample_app_ug/img/tep_termination_arch.svg b/doc/guides/sample_app_ug/img/tep_termination_arch.svg new file mode 100644 index 0000000000..54f1655cdc --- /dev/null +++ b/doc/guides/sample_app_ug/img/tep_termination_arch.svg @@ -0,0 +1,1400 @@ + + + +image/svg+xmlPage-1Rectangle.18Rounded rectangle.10Userspace vhost InterfaceUserspace vhost Interface +Rounded rectangle.12EncapsulationEncapsulation +Rounded rectangle.13DecapsulationDecapsulation +Rectangle.18.35Data storeRounded rectangle.16Inner IP/L4 checksum offloadInner IP/L4 checksum offload +Rounded rectangle.17UDP port configurationUDP port configuration +Rounded rectangle.18Inner IP/L4 csum verifyInner IP/L4csum verify +Rounded rectangle.19Tunnel FilterTunnel Filter +Rounded rectangle.20Packet TypePacket Type +Sheet.27DPDK ApplicationDPDK Application +Sheet.26VXLAN TunnelVXLAN Tunnel +Sheet.28NICNIC +45 degree single45 degree single.30ObjectWAN/LANWAN/LAN +Rounded rectangle.11TEPTEP +Rectangle.18.36Rounded rectangle.5VM-2 (VNID:200)VM-2 (VNID:200) +Rounded rectangleVM-1 (VNID: 100)VM-1 (VNID: 100) +Process boundary.23Process boundaryProcess boundary.24Process boundary.25Rectanglevport-0vport-0 +Rectangle.2vport-1vport-1 +Rectangle.6vport-0vport-0 +Rectangle.7vport-1vport-1 +Sheet.37GuestGuest +Rounded rectangle.38TSO offloadTSO offload + \ No newline at end of file diff --git a/doc/guides/sample_app_ug/index.rst b/doc/guides/sample_app_ug/index.rst index 8a3572fe93..50dac0f878 100644 --- a/doc/guides/sample_app_ug/index.rst +++ b/doc/guides/sample_app_ug/index.rst @@ -71,6 +71,7 @@ Sample Applications User Guide test_pipeline dist_app vm_power_management + tep_termination proc_info **Figures** @@ -132,6 +133,8 @@ Sample Applications User Guide :numref:`figure_vm_power_mgr_highlevel` :ref:`figure_vm_power_mgr_highlevel` :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 0000000000..6beb6f6b1f --- /dev/null +++ b/doc/guides/sample_app_ug/tep_termination.rst @@ -0,0 +1,329 @@ + +.. 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 ${RTE_SDK}/examples/tep_termination + +#. Run the tep_termination sample code: + + .. code-block:: console + + user@target:~$ ./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@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@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@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@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@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@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@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.