Fix Apexlake Documentation

Change-Id: If9519d1660fe21bc13307ce35711424c6e2b8176
Signed-off-by: Vincenzo Riccobene <vincenzox.m.riccobene@intel.com>
(cherry picked from commit 19caefaa3505a67bea77cf082168f29cbcf41ba9)

2 files changed, 75 insertions, 89 deletions

diff --git a/docs/userguide/apexlake_framework/apexlake_api.rst b/docs/userguide/apexlake_framework/apexlake_api.rst
index 94f07dc06..2ef3e43f5 100644
--- a/docs/userguide/apexlake_framework/apexlake_api.rst
+++ b/docs/userguide/apexlake_framework/apexlake_api.rst
@@ -1,8 +1,8 @@
 =================================
-Apexlake API interface definition
+Apexlake API Interface Definition
 =================================
 
-The API interface provided by the framework in order to execute the test cases is defined in the following.
+The API interface provided by the framework to enable the execution of test cases is defined as follows.
 
 
 init
@@ -15,37 +15,6 @@ init
     **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
 -----------------
 
@@ -61,13 +30,13 @@ execute_framework
 
                                 openstack_credentials)
 
-    Executes the framework according the inputs
+    Executes the framework according the specified inputs
 
     **Parameters**
 
         - **test_cases**
 
-            Test cases to be ran on the workload (dict() of dict())
+            Test cases to be run with the workload (dict() of dict())
 
             Example:
                 test_case = dict()
@@ -85,10 +54,10 @@ execute_framework
                 test_cases = [test_case]
 
         - **iterations**
-            Number of cycles to be executed (int)
+            Number of test cycles to be executed (int)
 
         - **heat_template**
-            (string) File name of the heat template of the workload to be deployed.
+            (string) File name of the heat template corresponding to 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).
 
@@ -99,7 +68,7 @@ execute_framework
 
         - **deployment_configuration**
             ( dict[string] = list(strings) ) ) Dictionary of parameters
-            representing the deployment configuration of the workload
+            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
diff --git a/docs/userguide/apexlake_framework/apexlake_installation.rst b/docs/userguide/apexlake_framework/apexlake_installation.rst
index 38c838494..2e129bfa2 100644
--- a/docs/userguide/apexlake_framework/apexlake_installation.rst
+++ b/docs/userguide/apexlake_framework/apexlake_installation.rst
@@ -1,42 +1,47 @@
 .. _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
+.. _here: https://wiki.opnfv.org/vtc
 
-===========================
-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.
 
+============================
+Apexlake Installation Guide
+============================
+ApexLake is a framework that provides automatic execution of experiments and related data collection to enable
+a user validate infrastructure from the perspective of a Virtual Network Function (VNF).
+In the context of Yardstick, a virtual Traffic Classifier (vTC) 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.
+Framework Hardware Dependencies
+===============================
+In order to run the framework there are some hardware related dependencies for ApexLake.
 
-The 2 NICs will be connected to the switch where the Openstack VM network is managed.
+The framework needs to be installed on the same physical node where DPDK-pktgen_
+is installed.
+The installation requires the physical node hosting the packet generator must have 2 NICs
+which are DPDK_ compatible.
 
-The switch is required to support multicast traffic and snooping protocol.
+The 2 NICs will be connected to the switch where the OpenStack VM network is managed.
 
-The corresponding ports to which the cables are connected will be configured as VLAN trunks
+The switch used must support multicast traffic and IGMP snooping.
+Further details about the configuration are provided at the following here_.
+
+The corresponding ports to which the cables are connected need to 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.
+Note the VLAN IDs used as they will be required in later configuration steps.
+
 
+Framework Software Dependencies
+===============================
+Before starting the framework, a number of dependencies must first be installed.
+The following describes the set of instructions to be executed via the Linux shell in order to install
+and configure the required dependencies.
 
-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.
 
-1. Install dependencies.
+To support the framework dependencies the following packages must be installed.
+The example provided is based on Ubuntu and needs to be executed in root mode.
 
-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
@@ -45,10 +50,10 @@ The following example is provided for Ubuntu and need to be executed as root.
     apt-get install tcpreplay
     apt-get install libpcap-dev
 
-2. Install the framework on the system.
+2. Install the Framework on the Target System.
+
+After entering the Apexlake directory, run the following command.
 
-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
@@ -59,12 +64,13 @@ After entering into the apexlake directory, it is sufficient to run the followin
 
     source openrc
 
-4. Create 2 Networks based on VLANs in Neutron.
+4. Create Two Networks based on VLANs in Neutron.
+
+To enable network communications between the packet generator and the compute node,
+two networks must be created via Neutron and mapped to the VLAN IDs
+that were previously used in the configuration of the physical switch.
+The following shows the typical set of commands required to configure Neutron correctly.
 
-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
@@ -89,35 +95,41 @@ The underlying switch needs to be configured accordingly.
     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:
+5. Configure the Test Cases
+
+The VLAN tags must also be included in the test case Yardstick yaml file
+as parameters for the following test cases:
     - TC 006
     - TC 007
     - TC 020
     - TC 021
 
 
-Install and configure DPDK Pktgen
+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.
+Execution of the framework is based on DPDK Pktgen.
+If DPDK Pktgen has not installed, it is necessary to download, install, 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.
+For instructions on 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:
+It is necessary to set the configuration file  to support the desired Pktgen configuration.
+A description of the required configuration parameters and supporting examples is provided in the following:
+
 ::
 
     [PacketGen]
@@ -153,19 +165,21 @@ A description of the required configuration parameters and examples is provided
     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:
+To find the parameters related to names of the NICs and the addresses of the PCI buses
+the user may find it 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.
+Lists the NICs available on the system, and shows the available drivers and bus addresses for each interface.
 Please make sure to select NICs which are DPDK compatible.
 
-Installation and configuration of smcroute
+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.
+The following is the list of commands required to download and install smroute.
+
 ::
 
     cd ~
@@ -179,32 +193,35 @@ In the following a list of commands to be ran to download and install smroute is
     sudo make install
     cd ..
 
-It is also required to create a configuration file using the following command:
+It is also requires the creation 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:
+For example:
+
 ::
 
     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
+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.
+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
+a proper configuration of OpenStack is required.
+For further information, please refer to the _SRIOV configuration guide