This will use the Roam() developer method to force a roam to
a certain BSS. This is particularly useful for any test requiring
roams that are not testing IWD's BSS selection logic. Rather than
creating hwsim rules, setting low RSSI values, and waiting for the
roam logic/scan to happen Roam() can be used to force the roam
logic immediately.
Several tests tests for connectivity with the expectation that it
will fail. This ends up taking 30+ seconds because testutil retries
3 times, each with a 10 second timeout. By passing expect_fail=True
this lowers the timeout to zero, and skips any retries.
After some code changes the FT-FILS AKM was no longer selectable
inside network_can_connect_bss. This normally shouldn't matter
since station ends up selecting the AKM explicitly, including
passing the fils_hint, but since the autotests only included
FT-FILS AKMs this caused the transition to fail with no available
BSS's.
To fix this the standard 8021x AKM was added to the hostapd
configs. This allows these BSS's to be selected when attempting
to roam, but since FT-FILS is the only other AKM it will be used
for the actual transition.
testScan was creating 10 separate hidden networks which
sometimes bogged down hostapd to the point that it would
not start up in time before test-runner's timeouts fired.
This appeared to be due to hostapd needing to create 10
separate interfaces which would sometimes fail with -ENFILE.
The test itself only needed two separate networks, so instead
the additional 8 can be completely removed.
The scan ranking logic was previously changed to be based off a
theoretical calculated data rate rather than signal strength.
For HT/VHT networks there are many data points that can be used
for this calculation, but non HT/VHT networks are estimated based
on a simple table mapping signal strengths to data rates.
This table starts at a signal strength of -65 dBm and decreases from
there, meaning any signal strengths greater than -65 dBm will end up
getting the same ranking. This poses a problem for 3/4 blacklisting
tests as they set signal strengths ranging from -20 to -40 dBm.
IWD will then autoconnect to whatever network popped up first, which
may not be the expected network.
To fix this the signal strengths were changed to much lower values
which ensures IWD picks the expected network.
Break up the SAE tests into two parts: testSAE and testSAE-AntiClogging
testSAE is simplified to only use two radios and a single phy managed
by hostapd. hostapd configurations are changed via the new 'set_value'
method added to hostapd utils. This allows forcing hostapd to use a
particular sae group set, or force hostapd to use SAE H2E/Hunting and
Pecking Loop for key derivation. A separate test for IKE Group 20 is no
longer required and is folded into connection_test.py
testSAE-AntiClogging is added with an environment for 5 radios instead
of 7, again with hostapd running on a single phy. 'sae_pwe' is used to
force hostapd to use SAE H2E or Hunting and Pecking for key derivation.
Both Anti-Clogging protocol variants are thus tested.
main.conf is added to both directories to force scan randomization off.
This seems to be required for hostapd to work properly on hwsim.
[General].APRange is now [IPv4].APAddressPool and the netmask is changed
from 23 to 27 bits to make the test correctly assert that only two
default-sized subnets are allowed by IWD simultaneously (default has
changed from 24 to 28 bits)
These test cases depend on setting up the existing hostapd instance to a
set of known addresses, which might be different from what test-runner
sets. During this time, any scans might result in the old and the new
addresses used by hostapd to be found in the scan results.
Fix that by using start_iwd=0 which tells test_runner that the test
wants to start iwd itself. This delays starting iwd until after the
setUpClass routine has been called and hostapd configured properly.
Also use more sensible rssi values for the 'non-preferred' bss.
Otherwise, ranking BSSes by throughput can confuse the test logic
since both BSSes are ranked the same and either can be picked by
autoconnect.
The FT-over-DS procedure now authenticates with multiple BSS's
upon connecting. This causes list_sta() to return our address for
any authenticated APs. It has now been changed to work with this
new behavior, as well as a check that the station fully connected
to the expected AP initially.
The AuthCenter was still not being fully cleaned up in these
tests. It was being stopped but there was still a reference being
held which prevented __del__ from being called.
This file was not included when testNetconfig was introduced
and is required. My system was working fine as it was in my
local tree but has been missing and not passing for others.
The cls object is part of the unittest framework and its lifespan
is out of test-runner's control. Setting objects into the cls
object sometimes keeps those objects around longer than desired.
Its best to unset anything set in cls when the test is tore down.
This test fails randomly, and it appears to be due to excessive
scanning. Historically most autotests start a dbus scan right
away. The problem is that most likely a periodic scan is already
ongoing, meaning the dbus scan gets queued. If a Connect() call
comes in (which it always does), the dbus scan gets delayed and will
trigger once connected, at a time the test is not expecting. This
can cause problems with any assumed timing as well as offchannel
frames.
This patch removes the explicit DBus scanning and instead uses
scan_if_needed with get_ordered_networks. The 'all_blacklisted_test'
was also modified to wait for scanning to complete after failing
to connect to all BSS's. This lets all the networks fully come
up (after being blocked by hwsim) and appear in scan results.
Every single roaming test had one of two problems with watching the
state change between roaming --> connected. Either the test used
wait_for_object_condition to wait for 'connected' which could allow
other states in between. Or it simply used an assert. The assert
wouldn't allow other state changes, but at the cost of potentially
failing due to IWD not having made it to the 'connected' state yet.
Now we have wait_for_object_change which takes two conditions:
initial (from_str) and expected (to_str). This API will not allow
any other conditions except these, and will wait for the expected
condition before continuing. This allows roaming test to reliably
wait for the roaming --> connected state change.
This is similar to wait_for_object_condition, but will not allow
any intermediate state changes between the initial and expected
conditions. This is useful for roaming tests when the expected
state change is 'connected' --> 'roaming' with no changes in
between.
This test occationally failed due to a badly timed DBus scan
triggering right when hwsim tried sending out the spoofed frame.
This caused mac80211_hwsim to reject CMD_FRAME when the timing
was just right.
Rather than always starting a DBus scan we can rely on periodic
scans and only DBus scan if there are no networks in IWD's list.
A scanning check was also added prior to sending out the frame
and if true we wait for not scanning. This is more paranoia than
anything.
Sometimes scan results can come in with a MAC address which
should be in the first index of addrs[] (42:xx:xx:xx:xx:xx).
This causes a failure to lookup the radio path.
There was also a failure path added if the radio cannot be
found rather than rely on DBus to fail with a None path.
The arguments to SendFrame were also changed to use the
ByteArray DBus type rather than python's internal bytearray.
This shouldn't have any effect, but its more consistent with
how DBus arguments should be used.
After recent changes fixing wait_for_object_condition it was accidentally
made to only work with classes, not other types of objects. Instead
create a minimal class to hold _wait_timed_out so it doesnt rely on
'obj' holding the boolean.
The testAPRoam autotest was silently failing on my machine until I
realized that my distribution hostapd (Arch Linux) is not built with
CONFIG_WNM_AP=y. Indeed, it is also disabled by default in upstream
hostapd. This resulted in the send_bss_transition() function of
hostapd.py silently failing. With this change, throw an exception in
case the BSS_TM_REQ command does not succeed to hopefully save others
the time of debugging this problem.
