pos can't be NULL in wpa_global_config_parse_str(), so there is no point
checking this, especially when pos was already dereferenced earlier.
Remove the redundant conditions.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Don't print potentially uninitialized variables in wpa_ctrl_command_bss().
Some compilers and analyzers may warn about it.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Fix compilation without CONFIG_P2P and only set secondary channel seg
idx if we use a mode supporting a sec channel for VHT/HE.
Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de>
Fix pointer sent for decapsulating subelements from MSCS descriptor
IE while processing (re)association response frames.
Fixes: af8ab3208d ("MSCS: Parse result of MSCS setup in (Re)Association Response frames")
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Enable VHT and HE as default config parameters in order for
wpa_supplicant AP mode to use it, if hw support is given.
Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de>
Add some missing pieces to the interface configuration of AP/mesh mode
in wpa_supplicant.
- check for secondary channel and HT40 capability
- try to downgrade to IEEE 802.11b if 802.11g is not available
Especially with the HT40 check, this code now performs all settings,
which the deleted/duplicated mesh code did.
Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de>
wpa_supplicant_conf_ap_ht() has to happen before
hostapd_setup_interface() in order for its configuration settings to
have effect on interface configuration.
Disable primary and secondary channel switch because of missing tie
breaking rule/frames in mesh networks. A rather long comment about
this issue is placed in mesh.c in the corresponding place.
I was not able to reproduce the memory corruption during
mesh_secure_ocv_mix_legacy, which lead to a revert of a similar patch in
the past.
Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de>
Some places in the code base were not using the wrappers like
hostapd_set_oper_centr_freq_seg0_idx and friends. This could lead to
errors, for example when joining 80 MHz mesh networks. Fix this, by
enforcing usage of these wrappers.
wpa_supplicant_conf_ap_ht() now checks for HE capability before dealing
with VHT in order for these wrappers to work, as they first check HE
support in the config.
While doing these changes, I've noticed that the extra channel setup
code for mesh networks in wpa_supplicant/mesh.c should not be necessary
anymore and dropped it. wpa_supplicant_conf_ap_ht() should handle this
setup already.
Acked-by: John Crispin <john@phrozen.org>
Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de>
Use ppKey instead of C-sign-key to encrypted E-id to E'-id into Reconfig
Announcement frame on the Enrollee side.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Store the received privacy protection key from Connector into
wpa_supplicant network profile and indicate it through the control
interface similarly to C-sign-key.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Add the DPP control interface chirp commands to the CLIs for greater
visibility and ease of use.
Signed-off-by: Wystan Schmidt <wystan.schmidt@charter.com>
We found that if REMOVE-AND-REFORM occurs before a group is started,
it would not send out GROUP-STARTED-EVENT after AP is enabled.
In the remove-and-reform process, ap_configured_cb is cleared. If a
group is not started, p2p_go_configured() will not be called after
completing AP setup. Fix this by preserving the callback parameters.
Signed-off-by: Jimmy Chen <jimmycmchen@google.com>
We found a problem that p2p_fallback_to_go_neg is not handled correctly
after running out of GO scan attempts. When autojoin is enabled and a
group is found in old scan results, supplicant would try to scan the
group several times. If the group is still not found, it reports group
formation failure while p2p_fallback_to_go_neg is enabled already.
If p2p_fallback_to_go_neg is enabled, it should fallback to GO
negotiation, but not report group formation failure after running out of
GO scan attempts.
Signed-off-by: Jimmy Chen <jimmycmchen@google.com>
Now that we no longer leave build artifacts outside the build folder, we
can clean up the gitignore a bit. Also move more things to per-folder
files that we mostly had already anyway.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The D-Bus implementation of RemoveAllNetworks differs wildly from the
CLI implementation. Let's share the implementations.
This resolves use-after-free bugs I noticed, where we continue to use
the 'wpa_s->current_ssid' wpa_ssid object after freeing it, because we
didn't bother to disconnect from (and set to NULL) current_ssid before
freeing it.
Signed-off-by: Brian Norris <briannorris@chromium.org>
When using NetworkManager to set up an access point, there seems to be a
race condition which can lead to a new log message every second.
The following message appears in AP mode:
CTRL-EVENT-SCAN-FAILED ret=-95 retry=1
Normally, this log message only appears once. But then (and only then)
the race is triggered and they appear every second, the following log
messages are also present:
Reject scan trigger since one is already pending
Failed to initiate AP scan
This patch just disables the retry for requests where the operation is
not supported anyway.
Signed-off-by: Georg Müller <georgmueller@gmx.net>
Otherwise the WPA_IF_P2P_DEVICE cannot be created if the base ifname is
long enough. As this is not a netdev device, it is acceptable if the
name is not completely unique. As such, simply insert a NUL byte at the
appropriate place.
Signed-off-by: Benjamin Berg <bberg@redhat.com>
wpa_drv_set_key() was called with a NULL address for IGTK and MGTK
before this patch. The nl80211 driver will then not add the
NL80211_KEY_DEFAULT_TYPE_MULTICAST flag for the key, which wrongly marks
this key also as a default unicast key in the Linux kernel.
With SAE this is no real problem in practice, as a pairwise key will be
negotiated in mesh mode, before the first data frame gets send. When
using IEEE 802.1X in a mesh network in the future, this gets a problem,
as Linux now will encrypt EAPOL frames with the default key, which is
also marked for unicast usage without this patch.
Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de>
Add D-Bus interface for ROAM command, imitating the existing wpa_cli
command.
Chromium OS has been carrying a form of this patch for a very long time.
I've cleaned it up a bit and documented it.
Signed-off-by: Brian Norris <briannorris@chromium.org>
The 'H' in HESSID was originally spelled "homogenous" in IEEE Std
802.11-2016 abbreviations and acronyms list, but that was changed in
REVmd to the significantly more common spelling "homonegeneous". Update
this older version to match the new spelling to be consistent throughout
the repository.
Signed-off-by: Jouni Malinen <j@w1.fi>
If the stored configurations for an SSID have changed, we can no longer
trust the current blacklist state of that SSID, since the updated
configs could change the behavior of the network. E.g., the BSS could be
blacklisted due to a bad password, and the config could be updated to
store the correct password. In this case, keeping the BSS in the
blacklist will prevent the user from connecting to the BSS after the
correct password has been updated.
Add the value was_changed_recently to the wpa_ssid struct. Update this
value every time a config is changed through wpa_set_config(). Check
this value in wpa_blacklist_get() to clear the blacklist whenever the
configs of current_ssid have changed.
This solution was chosen over simply clearing the blacklist whenever
configs change because the user should be able to change configs on an
inactive SSID without affecting the blacklist for the currently active
SSID. This way, the blacklist won't be cleared until the user attempts
to connect to the inactive network again. Furthermore, the blacklist is
stored per-BSSID while configs are stored per-SSID, so we don't have the
option to just clear out certain blacklist entries that would be
affected by the configs.
Finally, the function wpa_supplicant_reload_configuration() causes the
configs to be reloaded from scratch, so after a call to this function
all bets are off as to the relevance of our current blacklist state.
Thus, we clear the entire blacklist within this function.
Signed-off-by: Kevin Lund <kglund@google.com>
Signed-off-by: Brian Norris <briannorris@chromium.org>
This change adds some barebones tests for new blacklisting functionality
to wpas_module_tests.c. The tests ensure some basic functionality for
the functions wpa_blacklist_is_blacklisted() and wpa_blacklist_update().
Signed-off-by: Kevin Lund <kglund@google.com>
Signed-off-by: Brian Norris <briannorris@chromium.org>
This change adds the function wpa_blacklist_update(), which goes through
all blacklist entries and deletes them if their blacklist expired over
an hour ago. The purpose of this is to remove stale entries from the
blacklist which likely do not reflect the current condition of device's
network surroundings. This function is called whenever the blacklist is
polled, meaning that the caller always gets an up-to-date reflection of
the blacklist.
Another solution to clearing the blacklist that was considered was
to slowly reduce the counts of blacklist entries over time, and delete
them if the counts dropped below 0. We decided to go with the current
solution instead because an AP's "problematic" status is really a binary
thing: either the AP is no longer problematic, or it's still causing us
problems. So if we see any more problems within a reasonable amount of
time, it makes sense to just keep the blacklist where it was since the
AP is likely still undergoing the same issue. If we go a significant
amount of time (semi-arbitrarily chosen as 1 hour) without any issues
with an AP, it's reasonable to behave as if the AP is no longer
undergoing the same issue. If we see more problems at a later time, we
can start the blacklisting process fresh again, treating this as a brand
new issue.
Signed-off-by: Kevin Lund <kglund@google.com>
Signed-off-by: Brian Norris <briannorris@chromium.org>
wpa_supplicant keeps a blacklist of BSSs in order to prevent repeated
associations to problematic APs*. Currently, this blacklist is
completely cleared whenever we successfully connect to any AP. This
causes problematic behavior when in the presence of both a bad AP and
a good AP. The device can repeatedly attempt to roam to the bad AP
because it is clearing the blacklist every time it connects to the good
AP. This results in the connection constantly ping-ponging between the
APs, leaving the user stuck without connection.
Instead of clearing the blacklist, implement timeout functionality which
allows association attempts to blacklisted APs after some time has
passed. Each time a BSS would be added to the blacklist, increase the
duration of this timeout exponentially, up to a cap of 1800 seconds.
This means that the device will no longer be able to immediately attempt
to roam back to a bad AP whenever it successfully connects to any other
AP.
Other details:
The algorithm for building up the blacklist count and timeout duration
on a given AP has been designed to be minimally obtrusive. Starting with
a fresh blacklist, the device may attempt to connect to a problematic AP
no more than 6 times in any ~45 minute period. Once an AP has reached a
blacklist count >= 6, the device may attempt to connect to it no more
than once every 30 minutes. The goal of these limits is to find an
ideal balance between minimizing connection attempts to bad APs while
still trying them out occasionally to see if the problems have stopped.
The only exception to the above limits is that the blacklist is still
completely cleared whenever there are no APs available in a scan. This
means that if all nearby APs have been blacklisted, all APs will be
completely exonerated regardless of their blacklist counts or how close
their blacklist entries are to expiring. When all nearby APs have been
blacklisted we know that every nearby AP is in some way problematic.
Once we know that every AP is causing problems, it doesn't really make
sense to sort them beyond that because the blacklist count and timeout
duration don't necessarily reflect the degree to which an AP is
problematic (i.e. they can be manipulated by external factors such as
the user physically moving around). Instead, its best to restart the
blacklist and let the normal roaming algorithm take over to maximize
our chance of getting the best possible connection quality.
As stated above, the time-based blacklisting algorithm is designed to
be minimally obtrusive to user experience, so occasionally restarting
the process is not too impactful on the user.
*problematic AP: rejects new clients, frequently de-auths clients, very
poor connection quality, etc.
Signed-off-by: Kevin Lund <kglund@google.com>
Signed-off-by: Brian Norris <briannorris@chromium.org>
Within wpas_connection_failed(), the 'count' value of wpa_blacklist is
erroneously used as a tally of the number times the device has failed
to associate to a given BSSID without making a successful connection.
This is not accurate because there are a variety of ways a BSS can be
added to the blacklist beyond failed association such as interference
or deauthentication. This 'count' is lost whenever the blacklist is
cleared, so the wpa_supplicant stores an additional value
'extra_blacklist_count' which helps persist the 'count' through clears.
These count values are used to determine how long to wait to rescan
after a failed connection attempt.
While this logic was already slightly wrong, it would have been
completely broken by the upcoming change which adds time-based
blacklisting functionality. With the upcoming change, 'count' values
are not cleared on association, and thus do not necessarily even
approximate the "consecutive connection failures" which they were being
used for.
This change seeks to remove this unnecessary overloading of the
blacklist 'count' by directly tracking consecutive connection failures
within the wpa_supplicant struct, independent of the blacklist. This new
'consecutive_conn_failures' is iterated with every connection failure
and cleared when any successful connection is made. This change also
removes the now unused 'extra_blacklist_count' value.
Signed-off-by: Kevin Lund <kglund@google.com>
Signed-off-by: Brian Norris <briannorris@chromium.org>
commit f4e3860f ("Fix AP mode default TXOP Limit values for AC_VI
and AC_VO") corrects the default values of txop_limit from 93/46
to 94/47 for AP. STA would also need the same change.
Signed-off-by: Yogesh Kulkarni <yogesh.kulkarni@nxp.com>
Signed-off-by: Cathy Luo <xiaohua.luo@nxp.com>
Signed-off-by: Ganapathi Bhat <ganapathi.bhat@nxp.com>
These are no longer needed now. Note that this was never actually
sufficient since src/drivers/ isn't the only thing shared, and thus a
cross-build detection didn't work in all cases.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If the .config file changes, basically everything needs to be
rebuilt since we don't try to detect which symbols changed or
such. Now that the .config file handling is in the common
build system, make everything depend on it if there's one.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Instead of building in the source tree, put most object
files into the build/ folder at the root, and put each
thing that's being built into a separate folder.
This then allows us to build hostapd and wpa_supplicant
(or other combinations) without "make clean" inbetween.
For the tests keep the objects in place for now (and to
do that, add the build rule) so that we don't have to
rewrite all of that with $(call BUILDOBJS,...) which is
just noise there.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This will make it easier to split out the handling in
a proper way, and handle common cflags/dependencies.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Clean up in a more common fashion as well, initially for ../src/.
Also add $(Q) to the clean target in src/
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Some things are used by most of the binaries, pull them
into a common rule fragment that we can use properly.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If there is no matching interface given, but interface matching is
enabled, all interfaces on the system will try to be initialized. Non
wireless interfaces will fail and the loopback device will be one of
these, so just log a diagnostic rather than an error.
Signed-off-by: Roy Marples <roy@marples.name>
Instead, log a diagnostic so that noise to the user is reduced. This is
expected behavior with driver interfaces that do not report supported
operating modes/classes.
Signed-off-by: Roy Marples <roy@marples.name>
This is needed for clearing previously set parameters in a similar
manner that was already available through the control interface
SET_NETWORK command.
Signed-off-by: Matthew Wang <matthewmwang@chromium.org>
Teach wpa_supplicant to {de,}initialize bgscans when bgscan parameters
are set after initial connection.
Signed-off-by: Matthew Wang <matthewmwang@chromium.org>
Currently, wpa_config_set(), the function that sets wpa_supplicant
per-network properties, returns 1 when a property it attempts to set is
unchanged. Its global parallel, wpa_config_process_global(), doesn't do
this even though much of the code is very similar. Change this, and
several of the parser functions, to resemble the per-network parser and
setter functions.
Signed-off-by: Matthew Wang <matthewmwang@chromium.org>
When network properties are updated via dbus, wpa_config_set() is used
to update the property in the wpa_ssid struct. If it returns 1, the
property was not changed and there's no need to perform any of the
update actions.
Signed-off-by: Matthew Wang <matthewmwang@chromium.org>
D-Bus clients can call CreateInterface() once and use the resulting
Interface object to connect multiple times to different networks.
However, if the network interface gets added to a bridge, clients
currently have to remove the Interface object and create a new one.
Improve this by supporting the change of the BridgeIfname property of
an existing Interface object.
Signed-off-by: Beniamino Galvani <bgalvani@redhat.com>
Add a new configuration parameter p2p_6ghz_disable=1 to disable P2P
operation in the 6 GHz band. This avoids additional delays caused by
scanning 6 GHz channels in p2p_find and p2p_join operations in the cases
where user doesn't want P2P connection in the 6 GHz band.
Signed-off-by: Sreeramya Soratkal <ssramya@codeaurora.org>
Generate a control interface event upon receipt of DPP Presence
Announcement frames. This allows external programs to instrument
wpa_supplicant with bootstrapping information on-demand.
Signed-off-by: Andrew Beltrano <anbeltra@microsoft.com>
ignore_broadcast_ssid is supported when using with the config
file. But it generates an error if you try to set it via the
DBus interface.
Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Check if the 2.4 GHz channel 6 is in the list of available channels
advertised by the driver before adding in to the chirping frequency
list. This fixes issues, e.g., with a 5 GHz only interface.
Signed-off-by: Disha Das <dishad@codeaurora.org>
