Overview
========
-Tested Virtual Topologies
--------------------------
+Virtual Topologies
+------------------
CSIT VPP functional tests are executed on virtualized topologies created using
:abbr:`VIRL (Virtual Internet Routing Lab)` simulation platform contributed by
Cisco. VIRL runs on physical baremetal servers hosted by LF FD.io project.
-Majority of the tests are executed in the three node logical test topology -
-Traffic Generator (TG) node and two Systems Under Test (SUT) nodes connected in
-a loop. Some tests use two node logical test topology - TG node and SUT1 node.
-Both logical test topologies are shown in the figures below.::
-
- +------------------------+ +------------------------+
- | | | |
- | +------------------+ | | +------------------+ |
- | | <-----------------> | |
- | | | | | | | |
- | | DUT1 <-----------------> DUT2 | |
- | +--^--^------------+ | | +------------^--^--+ |
- | | | | | | | |
- | | | SUT1 | | SUT2 | | |
- +------------------------+ +------------------------+
- | | | |
- | | | |
- | | +-----------+ | |
- | +---------------> <---------------+ |
- | | TG | |
- +------------------> <------------------+
- +-----------+
-
- +------------------------+
- | |
- | +------------------+ |
- +---------------> <--------------+
- | | | | | |
- | |------------> DUT1 <-----------+ |
- | | | +------------------+ | | |
- | | | | | |
- | | | SUT1 | | |
- | | +------------------------+ | |
- | | | |
- | | | |
- | | +-----------+ | |
- | +---------------> <---------------+ |
- | | TG | |
- +------------------> <------------------+
- +-----------+
+Based on the packet path thru server SUTs, two distinct logical topology types
+are used for VPP DUT data plane testing:
+
+#. NIC-to-NIC switching topologies.
+#. VM service switching topologies.
+
+NIC-to-NIC Switching
+~~~~~~~~~~~~~~~~~~~~
+
+The simplest logical topology for software data plane application like
+VPP is NIC-to-NIC switching. Tested topologies for 2-Node and 3-Node
+testbeds are shown in figures below.
+
+.. only:: latex
+
+ .. raw:: latex
+
+ \begin{figure}[H]
+ \centering
+ \includesvg[width=0.90\textwidth]{../_tmp/src/vpp_performance_tests/logical-2n-nic2nic}
+ \label{fig:logical-2n-nic2nic}
+ \end{figure}
+
+.. only:: html
+
+ .. figure:: ../vpp_performance_tests/logical-2n-nic2nic.svg
+ :alt: logical-2n-nic2nic
+ :align: center
+
+
+.. only:: latex
+
+ .. raw:: latex
+
+ \begin{figure}[H]
+ \centering
+ \includesvg[width=0.90\textwidth]{../_tmp/src/vpp_performance_tests/logical-3n-nic2nic}
+ \label{fig:logical-3n-nic2nic}
+ \end{figure}
+
+.. only:: html
+
+ .. figure:: ../vpp_performance_tests/logical-3n-nic2nic.svg
+ :alt: logical-3n-nic2nic
+ :align: center
SUT1 and SUT2 are two VMs (Ubuntu or Centos, depending on the test suite), TG
is a Traffic Generator (TG, another Ubuntu VM). SUTs run VPP SW application in
to every node via dedicated virtual NICs and virtual links (not shown above
for clarity).
-For the test cases that require DUT (VPP) to communicate with VM over the
-vhost-user interfaces, a nested VM is created on SUT1 and/or SUT2 for the
-duration of these particular test cases only. DUT (VPP) test topology with VM
-is shown in the figure below including the applicable packet flow thru the VM
-(marked in the figure with ``***``).::
-
- +------------------------+ +------------------------+
- | +----------+ | | +----------+ |
- | | VM | | | | VM | |
- | | ****** | | | | ****** | |
- | +--^----^--+ | | +--^----^--+ |
- | *| |* | | *| |* |
- | +------v----v------+ | | +------v----v------+ |
- | | * * |**|***********|**| * * | |
- | | ***** *******<----------------->******* ***** | |
- | | * DUT1 | | | | DUT2 * | |
- | +--^---------------+ | | +---------------^--+ |
- | *| | | |* |
- | *| SUT1 | | SUT2 |* |
- +------------------------+ +------------------^-----+
- *| |*
- *| |*
- *| +-----------+ |*
- *| | | |*
- *+------------------> TG <------------------+*
- ******************* | |********************
- +-----------+
+VM Service Switching
+~~~~~~~~~~~~~~~~~~~~
+
+VM service switching topology test cases require VPP DUT to communicate
+with Virtual Machines (VMs) over vhost-user virtual interfaces. A nested VM is
+created on SUT1 and/or SUT2 for the duration of these particular test cases
+only. DUT (VPP) test topology with VM is shown in the figure below.
+
+.. only:: latex
+
+ .. raw:: latex
+
+ \begin{figure}[H]
+ \centering
+ \includesvg[width=0.90\textwidth]{../_tmp/src/vpp_performance_tests/logical-2n-vm-vhost}
+ \label{fig:logical-2n-vm-vhost}
+ \end{figure}
+
+.. only:: html
+
+ .. figure:: ../vpp_performance_tests/logical-2n-vm-vhost.svg
+ :alt: logical-2n-vm-vhost
+ :align: center
+
+
+.. only:: latex
+
+ .. raw:: latex
+
+ \begin{figure}[H]
+ \centering
+ \includesvg[width=0.90\textwidth]{../_tmp/src/vpp_performance_tests/logical-3n-vm-vhost}
+ \label{fig:logical-3n-vm-vhost}
+ \end{figure}
+
+.. only:: html
+
+ .. figure:: ../vpp_performance_tests/logical-3n-vm-vhost.svg
+ :alt: logical-3n-vm-vhost
+ :align: center
Functional Tests Coverage
-------------------------
and system functional tests, introduced in CSIT-17.01.
The naming should be intuitive for majority of the tests. Complete description
-of CSIT test naming convention is provided on :ref:`csit_test_naming`..
-
-Here few illustrative examples of the new naming usage for functional test
-suites:
-
-#. **Physical port to physical port - a.k.a. NIC-to-NIC, Phy-to-Phy, P2P**
-
- - *eth2p-ethip4-ip4base-func.robot* => 2 ports of Ethernet, IPv4 baseline
- routed forwarding, functional tests.
-
-#. **Physical port to VM (or VM chain) to physical port - a.k.a. NIC2VM2NIC,
- P2V2P, NIC2VMchain2NIC, P2V2V2P**
-
- - *eth2p-ethip4vxlan-l2bdbasemaclrn-eth-2vhost-1vm-func.robot* => 2 ports of
- Ethernet, IPv4 VXLAN Ethernet, L2 bridge-domain switching to/from two vhost
- interfaces and one VM, functional tests.
+of CSIT test naming convention is provided on :ref:`csit_test_naming`.
Code Review / csit.git / commitdiff