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diff --git a/docs/userguide/integration.rst b/docs/userguide/integration.rst
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--- a/docs/userguide/integration.rst
+++ b/docs/userguide/integration.rst
@@ -49,6 +49,173 @@ test will fail and terminate. The test will continue until a failure is detected
or all steps pass. A csv report file is generated after a test completes with an
OK or FAIL result.
+Test objects and their functions
+--------------------------------
+
+Every test step can call a function of one of the supported test objects. The list
+of supported objects and their most common functions follows:
+
+ * ``vswitch`` - provides functions for vSwitch configuration
+
+ List of supported functions:
+
+ * ``add_switch br_name`` - creates a new switch (bridge) with given ``br_name``
+ * ``del_switch br_name`` - deletes switch (bridge) with given ``br_name``
+ * ``add_phy_port br_name`` - adds a physical port into bridge specified by ``br_name``
+ * ``add_vport br_name`` - adds a virtual port into bridge specified by ``br_name``
+ * ``del_port br_name port_name`` - removes physical or virtual port specified by
+ ``port_name`` from bridge ``br_name``
+ * ``add_flow br_name flow`` - adds flow specified by ``flow`` dictionary into
+ the bridge ``br_name``; Content of flow dictionary will be passed to the vSwitch.
+ In case of Open vSwitch it will be passed to the ``ovs-ofctl add-flow`` command.
+ Please see Open vSwitch documentation for the list of supported flow parameters.
+ * ``del_flow br_name [flow]`` - deletes flow specified by ``flow`` dictionary from
+ bridge ``br_name``; In case that optional parameter ``flow`` is not specified
+ or set to an empty dictionary ``{}``, then all flows from bridge ``br_name``
+ will be deleted.
+ * ``dump_flows br_name`` - dumps all flows from bridge specified by ``br_name``
+ * ``enable_stp br_name`` - enables Spanning Tree Protocol for bridge ``br_name``
+ * ``disable_stp br_name`` - disables Spanning Tree Protocol for bridge ``br_name``
+ * ``enable_rstp br_name`` - enables Rapid Spanning Tree Protocol for bridge ``br_name``
+ * ``disable_rstp br_name`` - disables Rapid Spanning Tree Protocol for bridge ``br_name``
+
+ Examples:
+
+ .. code-block:: python
+
+ ['vswitch', 'add_switch', 'int_br0']
+
+ ['vswitch', 'del_switch', 'int_br0']
+
+ ['vswitch', 'add_phy_port', 'int_br0']
+
+ ['vswitch', 'del_port', 'int_br0', '#STEP[2][0]']
+
+ ['vswitch', 'add_flow', 'int_br0', {'in_port': '1', 'actions': ['output:2'],
+ 'idle_timeout': '0'}],
+
+ ['vswitch', 'enable_rstp', 'int_br0']
+
+ * ``vnf[ID]`` - provides functions for deployment and termination of VNFs; Optional
+ alfanumerical ``ID`` is used for VNF identification in case that testcase
+ deploys multiple VNFs.
+
+ List of supported functions:
+
+ * ``start`` - starts a VNF based on VSPERF configuration
+ * ``stop`` - gracefully terminates given VNF
+
+ Examples:
+
+ .. code-block:: python
+
+ ['vnf1', 'start']
+ ['vnf2', 'start']
+ ['vnf2', 'stop']
+ ['vnf1', 'stop']
+
+ * ``trafficgen`` - triggers traffic generation
+
+ List of supported functions:
+
+ * ``send_traffic traffic`` - starts a traffic based on the vsperf configuration
+ and given ``traffic`` dictionary. More details about ``traffic`` dictionary
+ and its possible values are available at `Traffic Generator Integration Guide
+ <http://artifacts.opnfv.org/vswitchperf/docs/design/trafficgen_integration_guide.html#step-5-supported-traffic-types>`__
+
+ Examples:
+
+ .. code-block:: python
+
+ ['trafficgen', 'send_traffic', {'traffic_type' : 'throughput'}]
+
+ ['trafficgen', 'send_traffic', {'traffic_type' : 'back2back', 'bidir' : 'True'}]
+
+ * ``settings`` - reads or modifies VSPERF configuration
+
+ List of supported functions:
+
+ * ``getValue param`` - returns value of given ``param``
+ * ``setValue param value`` - sets value of ``param`` to given ``value``
+
+ Examples:
+
+ .. code-block:: python
+
+ ['settings', 'getValue', 'TOOLS']
+
+ ['settings', 'setValue', 'GUEST_USERNAME', ['root']]
+
+ * ``namespace`` - creates or modifies network namespaces
+
+ List of supported functions:
+
+ * ``create_namespace name`` - creates new namespace with given ``name``
+ * ``delete_namespace name`` - deletes namespace specified by its ``name``
+ * ``assign_port_to_namespace port name [port_up]`` - assigns NIC specified by ``port``
+ into given namespace ``name``; If optional parameter ``port_up`` is set to ``True``,
+ then port will be brought up.
+ * ``add_ip_to_namespace_eth port name addr cidr`` - assigns an IP address ``addr``/``cidr``
+ to the NIC specified by ``port`` within namespace ``name``
+ * ``reset_port_to_root port name`` - returns given ``port`` from namespace ``name`` back
+ to the root namespace
+
+ Examples:
+
+ .. code-block:: python
+
+ ['namespace', 'create_namespace', 'testns']
+
+ ['namespace', 'assign_port_to_namespace', 'eth0', 'testns']
+
+ * ``veth`` - manipulates with eth and veth devices
+
+ List of supported functions:
+
+ * ``add_veth_port port peer_port`` - adds a pair of veth ports named ``port`` and
+ ``peer_port``
+ * ``del_veth_port port peer_port`` - deletes a veth port pair specified by ``port``
+ and ``peer_port``
+ * ``bring_up_eth_port eth_port [namespace]`` - brings up ``eth_port`` in (optional)
+ ``namespace``
+
+ Examples:
+
+ .. code-block:: python
+
+ ['veth', 'add_veth_port', 'veth', 'veth1']
+
+ ['veth', 'bring_up_eth_port', 'eth1']
+
+ * ``tools`` - provides a set of helper functions
+
+ List of supported functions:
+
+ * ``Assert condition`` - evaluates given ``condition`` and raises ``AssertionError``
+ in case that condition is not ``True``
+ * ``Eval expression`` - evaluates given expression as a python code and returns
+ its result
+ * ``Exec command [regex]`` - executes a shell command and filters its output by
+ (optional) regular expression
+
+ Examples:
+
+ .. code-block:: python
+
+ ['tools', 'exec', 'numactl -H', 'available: ([0-9]+)']
+ ['tools', 'assert', '#STEP[-1][0]>1']
+
+ * ``wait`` - is used for test case interruption. This object doesn't have
+ any functions. Once reached, vsperf will pause test execution and waits
+ for press of ``Enter key``. It can be used during testcase design
+ for debugging purposes.
+
+ Examples:
+
+ .. code-block:: python
+
+ ['wait']
+
Test Macros
-----------
@@ -75,6 +242,16 @@ This test profile uses the vswitch add_vport method which returns a string
value of the port added. This is later called by the del_port method using the
name from step 1.
+It is also possible to use negative indexes in step macros. In that case
+``#STEP[-1]`` will refer to the result from previous step, ``#STEP[-2]``
+will refer to result of step called before previous step, etc. It means,
+that you could change ``STEP 2`` from previous example to achieve the same
+functionality:
+
+.. code-block:: python
+
+ ['vswitch', 'del_port', 'int_br0', '#STEP[-1][0]'], # STEP 2
+
Also commonly used steps can be created as a separate profile.
.. code-block:: python