mirror of
https://git.kernel.org/pub/scm/network/wireless/iwd.git
synced 2024-12-21 20:12:37 +01:00
269 lines
7.9 KiB
Plaintext
269 lines
7.9 KiB
Plaintext
Notes for test-runner usage
|
|
***************************
|
|
|
|
Tool Description
|
|
================
|
|
|
|
test-runner is an automated test execution tool for IWD. It is capable of
|
|
creating the emulated environments representing a variety of network topologies
|
|
and run the automated tests of IWD functionality.
|
|
|
|
|
|
Software Prerequisites
|
|
======================
|
|
|
|
The test-runner tool requires the following binaries to be present on the host
|
|
OS:
|
|
|
|
Name: Tested ver.:
|
|
1. qemu 2.4.1
|
|
2. Linux kernel 4.6.1
|
|
3. dbus-daemon 1.10.0
|
|
4. ifconfig 2.10-alpha
|
|
5. iw 3.17
|
|
6. python 2.7
|
|
7. haveged no ver. avail.
|
|
8. hostapd 2.4
|
|
9. <iwd>/tools/hwsim 0.0
|
|
10. <iwd>/src/iwd 0.0
|
|
|
|
Note: The test-runner mounts host's file system in readonly mode and executes
|
|
the above binaries inside of an emulated environment directly from it.
|
|
|
|
|
|
Building Kernel
|
|
===============
|
|
|
|
The test-runner tool requires a kernel that is at least build with these
|
|
minimal options for a successful boot and execution:
|
|
|
|
<arch>_defconfig Default kernel configuration
|
|
|
|
kvmconfig Default configuration for
|
|
kvm guests
|
|
|
|
<iwd>/tools/test_runner_kernel_config The test-runner specific
|
|
configuration
|
|
|
|
These configurations should be installed as .config in the kernel source
|
|
directory. To make a x86_64 guest kernel the sequence of commands may look
|
|
as follows:
|
|
|
|
$ cd linux-X.X.X
|
|
|
|
$ make x86_64_defconfig
|
|
|
|
$ make kvmconfig
|
|
|
|
$ sh <iwd>/tools/test_runner_kernel_config
|
|
|
|
$ make olddefconfig
|
|
|
|
After that a default kernel with the required options can be built:
|
|
|
|
$ make -j$(nproc)
|
|
|
|
Note: To catch locking related issues the following set of kernel config
|
|
options may be useful:
|
|
|
|
CONFIG_LOCKDEP_SUPPORT=y
|
|
CONFIG_DEBUG_SPINLOCK=y
|
|
CONFIG_DEBUG_LOCK_ALLOC=y
|
|
CONFIG_PROVE_LOCKING=y
|
|
CONFIG_LOCKDEP=y
|
|
CONFIG_DEBUG_MUTEXES=y
|
|
|
|
By default the test-runner will search for the kernel image in these locations:
|
|
|
|
<iwd>/tools/bzImage
|
|
|
|
or
|
|
|
|
<iwd>/tools/arch/x86/boot/bzImage
|
|
|
|
An arbitrary kernel image location can be specified by using '--kernel <path>'
|
|
parameter into test-runner.
|
|
|
|
|
|
Running Automated Tests
|
|
=======================
|
|
|
|
By default, the automated test configuration directories reside in
|
|
'<iwd>/autotests' and have a mandatory prefix of 'test'.
|
|
|
|
<iwd>/autotests/test1
|
|
/test2
|
|
...
|
|
|
|
The test configurations along with test cases in <iwd>/autotests/test*
|
|
directories will be discovered and executed by test-runner in sequential
|
|
fashion. The following set of commands is sufficient to run the automated
|
|
tests shipped with IWD:
|
|
|
|
$ cd <iwd>/tools
|
|
|
|
$ sudo ./test-runner
|
|
|
|
One can specify a particular set of test configurations to be executed by using
|
|
'-t <dir1,dir2>' parameter. An absolute path is necessary for the test
|
|
configuration directories outside of <iwd>/autotests.
|
|
|
|
The command line may look as follows:
|
|
|
|
$ sudo ./test-runner -t test1,test3,/home/test4
|
|
|
|
|
|
Creating Test Configurations
|
|
============================
|
|
|
|
A typical test configuration directory may consist of these types of files:
|
|
|
|
hw.conf Defines the network configuration and
|
|
properties of the radios.
|
|
|
|
*Test or *Test.py The set of test cases for IWD functionality
|
|
implemented using Python scripting language.
|
|
These files must have one of the two predefined
|
|
suffixes: 'Test' or 'Test.py'
|
|
|
|
*.conf A configuration file for an instance of hostapd
|
|
(Defined in hw.conf) service.
|
|
|
|
Each configuration directory has exactly one hw.conf, where the number of
|
|
Python script files is virtually unlimited. The number of hostapd configuration
|
|
files is bounded by the limitation in mac80211_hwsim driver and is set
|
|
to 99. (The mac80211_hwsim driver allows to create 100 of simultaneous radios
|
|
and one of them is reserved by the test-runner for IWD)
|
|
|
|
A typical contents of a test configuration directory may look as follows:
|
|
|
|
/test1/hw.conf
|
|
ap1.conf
|
|
ap2.conf
|
|
networkScanTest
|
|
networkConnectTest.py
|
|
|
|
|
|
Defining Network
|
|
----------------
|
|
Network topology along with configuration for the automated test cases is
|
|
predetermined in hardware configuration file 'hw.conf'. In addition, it allows
|
|
to establish the relationships between the emulated hardware radios and
|
|
services that represent various entities of a wireless network.
|
|
|
|
The following sample hardware configuration file allows to emulate a network
|
|
of three nodes. Two of which are access points and the third one represents a
|
|
supplicant running IWD:
|
|
|
|
#~~~~~~~~~~~~~~~~~~~~~~~~~ hw.conf ~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
# Lines starting with # are ignored
|
|
|
|
# 'SETUP' is a manditory configuration group.
|
|
[SETUP]
|
|
#
|
|
# Total number of radios requested per network setup. This includes
|
|
# the radios used by APs as well as one for IWD. This field is mandatory and
|
|
# has a range of [1, 100].
|
|
num_radios=3
|
|
|
|
# Definition of the radio configuration identifiers. These identifiers are used
|
|
# to map the APs and IWD to the radios with the particular hardware properties.
|
|
# This field is optional. If identifier is omitted from this list, then the
|
|
# default radio properties will be used as they are defined in mac80211_hwsim
|
|
# driver to satisfy a total number of radios requested in 'num_radios' field.
|
|
radio_confs=rad0:rad1
|
|
|
|
# Maximum execution interval per Python script file in seconds. This field is
|
|
# optional.
|
|
# Default: 20 seconds.
|
|
#max_test_exec_interval_sec=5
|
|
|
|
#
|
|
# The following two configuration groups are examples of the radio
|
|
# configurations.
|
|
#
|
|
# This group of settings allows to specify a set of properties for a radio. The
|
|
# name of the group represents a radio identifier and must be predefined in
|
|
# 'radio_confs' field inside of 'SETUP' group. This configuration group is
|
|
# optional.
|
|
# TODO: explain each one of the properties.
|
|
[rad0]
|
|
channels=2
|
|
p2p_device=1
|
|
use_chanctx=1
|
|
|
|
# Properties of the second radio. This configuration group is optional.
|
|
[rad1]
|
|
p2p=0
|
|
|
|
# 'HOSTAPD' configuration group identifies a set of access points (AP) for the
|
|
# current network topology. Each key/value pair represents a single AP that is
|
|
# emulated by the instance of hostapd service. The key indicates an arbitrary
|
|
# radio identifier and value specifies a configuration file for the instance.
|
|
# If a radio identifier can not be mapped to a predefined radio configuration
|
|
# (identifier is not part of the 'radio_confs' list), then a radio with the
|
|
# default configuration is used. This configuration group is optional.
|
|
[HOSTAPD]
|
|
rad0=ap1.conf
|
|
rad1=ap2.conf
|
|
#~~~~~~~~~~~~~~~~~~ end of hw.conf ~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
|
|
Configuring Access Points
|
|
-------------------------
|
|
The test-runner tool makes use of the hostapd service to emulate the access
|
|
points (AP). The hostapd service comes preinstalled on most Linux
|
|
distributions.
|
|
For more information on hostapd refer to this page:
|
|
|
|
http://linuxwireless.org/en/users/Documentation/hostapd/
|
|
|
|
A full set of the hostapd configurations along with explanation can be
|
|
found at:
|
|
|
|
https://w1.fi/cgit/hostap/plain/hostapd/hostapd.conf
|
|
|
|
|
|
Writing Python Test Scripts
|
|
---------------------------
|
|
The test-runner tool relies on test cases written in Python script language
|
|
to exercise the functionality of IWD. The outcomes of the tests are determined
|
|
by the exit status of a process running test and reported on per Python file
|
|
bases. The test creators are highly encouraged to use the Python unit test
|
|
framework.
|
|
|
|
For more information on Python unit test framework refer to the following page:
|
|
|
|
http://pyunit.sourceforge.net/pyunit.html
|
|
|
|
|
|
Examples of the framework usage:
|
|
|
|
#~~~~~~~~~~~~~~~~~~~~~~~~~ alwaysPassingTest.py ~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
#!/usr/bin/python
|
|
|
|
import unittest
|
|
|
|
class TestPassingCase(unittest.TestCase):
|
|
|
|
def test_pass(self):
|
|
self.assertTrue(True)
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|
|
#~~~~~~~~~~~~~~~~~~ end of alwaysPassingTest.py ~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
#~~~~~~~~~~~~~~~~~~~~~~~~~ alwaysFailingTest.py ~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
#!/usr/bin/python
|
|
|
|
import unittest
|
|
|
|
class TestFailingCase(unittest.TestCase):
|
|
|
|
def test_fail(self):
|
|
self.assertTrue(False)
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|
|
#~~~~~~~~~~~~~~~~~~ end of alwaysFailingTest.py ~~~~~~~~~~~~~~~~~~~~~~~~~
|