Fixed documentation for ApexLake

Integration of ApexLake documentation into the main docs directory

Change-Id: I3398acc16cc2ff4bb039783fc5bcb6a10afda4e1
Signed-off-by: Vincenzo Riccobene <vincenzox.m.riccobene@intel.com>
(cherry picked from commit 58f3b57faedfda7033383b5807fb6553acaa6a2f)

3 files changed, 331 insertions, 0 deletions

diff --git a/docs/userguide/apexlake_framework/apexlake_api.rst b/docs/userguide/apexlake_framework/apexlake_api.rst
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+=================================
+Apexlake API interface definition
+=================================
+
+The API interface provided by the framework in order to execute the test cases is defined in the following.
+
+
+init
+----
+
+**static init()**
+
+    Initializes the Framework
+
+    **Returns** None
+
+
+get_available_test_cases
+------------------------
+
+**static get_available_test_cases()**
+
+    Returns a list of available test cases. This list include eventual modules developed by the user, if any.
+    Each test case is returned as a string that represents the full name of the test case and that
+    can be used to get more information calling get_test_case_features(test_case_name)
+
+    **Returns** list of strings
+
+
+get_test_case_features
+----------------------
+
+**static get_test_case_features(test_case)**
+
+    Returns a list of features (description, requested parameters, allowed values, etc.)
+    for a specified test case.
+
+    **Parameters**
+
+        - **test_case**
+
+            Name of the test case (string). The string represents the test
+            case and can be obtained calling “get_available_test_cases()” method.
+
+    **Returns**
+        dict() containing the features of the test case
+
+
+execute_framework
+-----------------
+
+**static execute_framework** (test_cases,
+
+                                iterations,
+
+                                heat_template,
+
+                                heat_template_parameters,
+
+                                deployment_configuration,
+
+                                openstack_credentials)
+
+    Executes the framework according the inputs
+
+    **Parameters**
+
+        - **test_cases**
+
+            Test cases to be ran on the workload (dict() of dict())
+
+            Example:
+                test_case = dict()
+
+                test_case[’name’] = ‘module.Class’
+
+                test_case[’params’] = dict()
+
+                test_case[’params’][’throughput’] = ‘1’
+
+                test_case[’params’][’vlan_sender’] = ‘1000’
+
+                test_case[’params’][’vlan_receiver’] = ‘1001’
+
+                test_cases = [test_case]
+
+        - **iterations**
+            Number of cycles to be executed (int)
+
+        - **heat_template**
+            (string) File name of the heat template of the workload to be deployed.
+            It contains the parameters to be evaluated in the form of #parameter_name.
+            (See heat_templates/vTC.yaml as example).
+
+        - **heat_template_parameters**
+            (dict) Parameters to be provided as input to the
+            heat template. See http://docs.openstack.org/developer/heat/ template_guide/hot_guide.html
+            section “Template input parameters” for further info.
+
+        - **deployment_configuration**
+            ( dict[string] = list(strings) ) ) Dictionary of parameters
+            representing the deployment configuration of the workload
+
+            The key is a string corresponding to the name of the parameter,
+            the value is a list of strings representing the value to be
+            assumed by a specific param. The parameters are user defined:
+            they have to correspond to the place holders (#parameter_name)
+            specified in the heat template.
+
+        **Returns** dict() containing results
diff --git a/docs/userguide/apexlake_framework/apexlake_installation.rst b/docs/userguide/apexlake_framework/apexlake_installation.rst
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+.. _DPDK: http://dpdk.org/doc/nics
+.. _DPDK-pktgen: https://github.com/Pktgen/Pktgen-DPDK/
+.. _SRIOV: https://wiki.openstack.org/wiki/SR-IOV-Passthrough-For-Networking
+
+===========================
+Apexlake installation guide
+===========================
+ApexLake is a framework that provides automatic execution of experiments and related data collection to help
+the user validating the infrastructure from the perspective of a Virtual Network Function.
+To do so in the context of Yardstick, the virtual Traffic Classifier network function is utilized.
+
+
+Hardware dependencies to run the framework
+==========================================
+In order to run the framework some hardware dependencies are required to run ApexLake.
+
+The framework needs to be installed on a physical node where the DPDK packet DPDK-pktgen_
+can be correctly installed and executed.
+That requires for the packet generator to have 2 NICs DPDK_ Compatible.
+
+The 2 NICs will be connected to the switch where the Openstack VM network is managed.
+
+The switch is required to support multicast traffic and snooping protocol.
+
+The corresponding ports to which the cables are connected will be configured as VLAN trunks
+using two of the VLAN IDs available for Neutron.
+The mentioned VLAN IDs will be required in further configuration steps.
+
+
+Software dependencies to run the framework
+==========================================
+Before to start the framework, a set of dependencies are required to be installed.
+In the following a set of instructions to be executed on the Linux shell to install dependencies
+and configure the environment is presented.
+
+1. Install dependencies.
+
+To install the dependencies required by the framework it is necessary install the following packages.
+The following example is provided for Ubuntu and need to be executed as root.
+::
+
+    apt-get install python-dev
+    apt-get install python-pip
+    apt-get install python-mock
+    apt-get install tcpreplay
+    apt-get install libpcap-dev
+
+2. Install the framework on the system.
+
+The installation of the framework on the system requires the setup of the project.
+After entering into the apexlake directory, it is sufficient to run the following command.
+::
+
+    python setup.py install
+
+3. Source OpenStack openrc file.
+
+::
+
+    source openrc
+
+4. Create 2 Networks based on VLANs in Neutron.
+
+In order for the network communication between the packet generator and the Compute node to
+work fine, it is required to create through Neutron two networks and map those on the VLAN IDs
+that have been previously used for the configuration on the physical switch.
+The underlying switch needs to be configured accordingly.
+::
+
+    VLAN_1=2025
+    VLAN_2=2021
+    neutron net-create apexlake_inbound_network \
+            --provider:network_type vlan \
+            --provider:segmentation_id $VLAN_1 \
+            --provider:physical_network physnet1
+
+    neutron subnet-create apexlake_inbound_network \
+            192.168.0.0/24 --name apexlake_inbound_subnet
+
+    neutron net-create apexlake_outbound_network \
+            --provider:network_type vlan \
+            --provider:physical_network physnet1
+
+    neutron net-create apexlake_inbound_network \
+            --provider:network_type vlan \
+            --provider:segmentation_id $VLAN_2 \
+            --provider:physical_network physnet1
+
+    neutron subnet-create apexlake_outbound_network 192.168.1.0/24 \
+            --name apexlake_outbound_subnet
+
+5. Configure the Test Cases.
+
+The VLAN tags are also required into the test case Yardstick yaml file as parameters the following test cases:
+    - TC 006
+    - TC 007
+    - TC 020
+    - TC 021
+
+
+Install and configure DPDK Pktgen
++++++++++++++++++++++++++++++++++
+The execution of the framework is based on DPDK Pktgen.
+If DPDK Pktgen has not been installed on the system by the user, it is necessary to download, compile and configure it.
+The user can create a directory and download the dpdk packet generator source code:
+::
+
+    cd experimental_framework/libraries
+    mkdir dpdk_pktgen
+    git clone https://github.com/pktgen/Pktgen-DPDK.git
+
+For the installation and configuration of DPDK and DPDK Pktgen please follow the official DPDK Pktgen README file.
+Once the installation is completed, it is necessary to load the DPDK kernel driver, as follow:
+::
+
+    insmod uio
+    insmod DPDK_DIR/x86_64-native-linuxapp-gcc/kmod/igb_uio.ko
+
+It is required to properly set the configuration file according to the system on Pktgen runs on.
+A description of the required configuration parameters and examples is provided in the following:
+::
+
+    [PacketGen]
+    packet_generator = dpdk_pktgen
+
+    # This is the directory where the packet generator is installed
+    # (if the user previously installed dpdk-pktgen,
+    # it is required to provide the director where it is installed).
+    pktgen_directory = /home/user/software/dpdk_pktgen/dpdk/examples/pktgen/
+
+    # This is the directory where DPDK is installed
+    dpdk_directory = /home/user/apexlake/experimental_framework/libraries/Pktgen-DPDK/dpdk/
+
+    # Name of the dpdk-pktgen program that starts the packet generator
+    program_name = app/app/x86_64-native-linuxapp-gcc/pktgen
+
+    # DPDK coremask (see DPDK-Pktgen readme)
+    coremask = 1f
+
+    # DPDK memory channels (see DPDK-Pktgen readme)
+    memory_channels = 3
+
+    # Name of the interface of the pktgen to be used to send traffic (vlan_sender)
+    name_if_1 = p1p1
+
+    # Name of the interface of the pktgen to be used to receive traffic (vlan_receiver)
+    name_if_2 = p1p2
+
+    # PCI bus address correspondent to if_1
+    bus_slot_nic_1 = 01:00.0
+
+    # PCI bus address correspondent to if_2
+    bus_slot_nic_2 = 01:00.1
+
+
+To find the parameters related to names of the NICs and addresses of the PCI buses
+the user may find useful to run the DPDK tool nic_bind as follows:
+::
+
+    DPDK_DIR/tools/dpdk_nic_bind.py --status
+
+which lists the NICs available on the system, show the available drivers and bus addresses for each interface.
+Please make sure to select NICs which are DPDK compatible.
+
+Installation and configuration of smcroute
+++++++++++++++++++++++++++++++++++++++++++
+The user is required to install smcroute which is used by the framework to support multicast communications.
+In the following a list of commands to be ran to download and install smroute is provided.
+::
+
+    cd ~
+    git clone https://github.com/troglobit/smcroute.git
+    cd smcroute
+    sed -i 's/aclocal-1.11/aclocal/g' ./autogen.sh
+    sed -i 's/automake-1.11/automake/g' ./autogen.sh
+    ./autogen.sh
+    ./configure
+    make
+    sudo make install
+    cd ..
+
+It is also required to create a configuration file using the following command:
+
+    SMCROUTE_NIC=(name of the nic)
+
+where name of the nic is the name used previously for the variable "name_if_2".
+In the example it would be:
+::
+
+    SMCROUTE_NIC=p1p2
+
+Then create the smcroute configuration file /etc/smcroute.conf
+::
+
+    echo mgroup from $SMCROUTE_NIC group 224.192.16.1 > /etc/smcroute.conf
+
+
+At the end of this procedure it will be necessary to perform the following actions to add the user to the sudoers:
+::
+
+    adduser USERNAME sudo
+    echo "user ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
+
+
+Experiment using SR-IOV configuration on the compute node
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+In order to enable SR-IOV interfaces on the physical NIC of the compute node, a compatible NIC is required.
+NIC configuration depends on model and vendor. After proper configuration to support SR-IOV,
+a proper configuration of openstack is required.
+For further information, please look at the _SRIOV configuration guide
diff --git a/docs/userguide/apexlake_framework/index.rst b/docs/userguide/apexlake_framework/index.rst
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+********************************
+Apexlake Framework Documentation
+********************************
+
+.. toctree::
+      :numbered:
+   :maxdepth: 2
+
+   apexlake_installation
+   apexlake_api
+