These changes account for situations where the CQM threshold
might be approximately the same as the currently received signal,
and thus CQM events are triggered often due to measurement
error/small fluctuations. This results in scanning occurring
too frequently.
Firstly, inhibit the immediate scan when the short-scan count
is at the maximum. This keeps bursts of CQM toggling from
causing a torrent of back-to-back scans. This does not inhibit
immediate scans if the CQM triggers a second time (if the signal
falls lower past the hysteresis). This reduces the scan rate in
the worst case (fast-rate toggling high/low CQM events) to the
short scan interval.
Secondly, change the behavior of the short scan count so it acts like
a "leaky bucket". As we perform short-scans, the bucket fills until
it reaches a maximal short-scan count, at which we back-off and
revert to a long scan interval. The short scan count decreases by
one (emptying the bucket) every time we complete a long scan interval
without a low-RSSI CQM event.
This reduces the impact of medium-rate toggling of high/low CQM
events, reducing the number of short-interval scans that occur before
returning to a long-interval if the system was recently doing
short scans.
Driver global init was considered a hard failure. Thus if, for example,
you used the Broadcom STA driver and didn't have nl80211 or cfg80211
loaded into the kernel, and specified a driver value of "nl80211,wext",
the nl80211 driver's global init would fail with the following message:
nl80211: 'nl80211' generic netlink not found
Failed to initialize driver 'nl80211'
but since global init was a hard failure, creating the supplicant
interface would fail and the WEXT driver would not be tried.
Give other drivers a chance instead.
Signed-hostap: Dan Williams <dcbw@redhat.com>
intended-for: hostap-1
The setter function uses the same hostapd_data structure as the getter
which causes it to crash if called on a P2P client. To overcome this
issue, the role is checked to ensure it is called on a group owner and
the pointer is examined for validity. The function will return an error
if called on a non-GO system.
Signed-hostap: Todd Previte <toddx.a.previte@intel.com>
Signed-hostap: Angie Chinchilla <angie.v.chinchilla@intel.com>
intended-for: hostap-1
When using DBus to get group properties, a segmentation fault is
generated on P2P clients due to a NULL pointer for the ap_iface struct.
The current implementation only returns vendor extensions when called on
a P2P group owner.
The code now checks the P2P role which allows for role-specific
information to be provided. This also fixes the crash issue by only
looking for the correct structures based on the current P2P role.
Signed-hostap: Todd Previte <toddx.a.previte@intel.com>
Signed-hostap: Angie Chinchilla <angie.v.chinchilla@intel.com>
intended-for: hostap-1
When looking for PMKSA cache entries to use with a new association, only
accept entries created with the same network block that was used to
create the cache entry.
Signed-hostap: Jouni Malinen <j@w1.fi>
The disconnection command results in disassociation and deauthentication
events which were previously processed during the scan in case of
select_network command being used while associated with another network.
While this works in most cases, it can result in confusing event
messages in ctrl_iface and debug log. Avoid this by using a short delay
between the disconnection and scan request to allow the disconnection
events to be processed prior to starting the new scan.
Signed-hostap: Jouni Malinen <j@w1.fi>
intended-for: hostap-1
While the exponential increase in the lockout period provides an
efficient mitigation mechanism against brute force attacks, this
additional trigger to enter indefinite lockout period (cleared by
restarting hostapd) will limit attacks even further by giving maximum of
10 attempts (without authorized user action) even in a very long term
attack.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This allows HT capabilities overrides on kernels that
support these features.
MCS Rates can be disabled to force to slower speeds when using HT.
Rates cannot be forced higher.
HT can be disabled, forcing an 802.11a/b/g/n station to act like
an 802.11a/b/g station.
HT40 can be disabled.
MAX A-MSDU can be disabled.
A-MPDU Factor and A-MPDU Density can be modified.
Please note that these are suggestions to the kernel. Only mac80211
drivers will work at all. The A-MPDU Factor can only be decreased and
the A-MPDU Density can only be increased currently.
Signed-hostap: Ben Greear <greearb@candelatech.com>
Now that CTRL-EVENT-TERMINATING even is sent at the end of interface
removal in case wpa_supplicant process is going to terminate, there
is no need for this duplicated event in the signal handler.
Signed-hostap: Jouni Malinen <j@w1.fi>
This allows TERMINATING ctrl_iface event to be sent at the end of the
deinit sequence to avoid race conditions with new operations that this
event may trigger while wpa_supplicant would still be running through
the deinitialization path.
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
This avoids issues with some external program starting to use the
interface based on the interface removal event before wpa_supplicant
has completed deinitialization of the driver interface.
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
This will be needed to be able to move ctrl_iface TERMINATING event to
the end of interface removal.
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
current_bss and pending_bssid weren't cleaned up so BSS
kept appearing in the scan results even when it was actually gone.
Use wpa_supplicant_mark_disassoc() to cleanup the wpa_s context
instead of just dropping wpa_state back to DISCONNECTED.
Reported-by: Vishal Mahaveer <vishalm@ti.com>
Signed-hostap: Eyal Shapira <eyal@wizery.com>
For drivers limited to scan a single SSID at a time, this prevents
waiting too long for a wildcard scan in case there are several
scan_ssid networks in the configuration.
Signed-hostap: Eyal Shapira <eyal@wizery.com>
This changes the install target such that parent directories of
installed paths area created and each path is only installed
on a dependency basis.
Signed-off-by: Grant Erickson <marathon96@gmail.com>
This is a useful function that simplifies some code and can eventually
be used somewhere else in future.
Signed-hostap: Antonio Quartulli <ordex@autistici.org>
These properties did not work on big endian PowerPC (always 100% for
Signal and 0 for Frequency) due to endianness problem (u32 to u16 data
loss).
Signed-off-by: Sylvestre Gallon <ccna.syl@gmail.com>
Perforce does not like @ in the file name and since these template files
do not really need to have that in the name, make the files in
repository friendlier to Perforce. The generated *.service file will
maintain their old names.
Signed-hostap: Jouni Malinen <j@w1.fi>
When the "bssid=" option is set for an IBSS network and ap_scan = 2,
ask the driver to fix this BSSID, if possible.
Previously, any "bssid=" option were ignored in IBSS mode when ap_scan=2.
Signed-hostap: Nicolas Cavallari <cavallar@lri.fr>
Provide a means over DBus to set the conf->fast_reauth
property, which controls whether TLS session resumption
should be attempted for EAP-TLS 802.1X networks.
Signed-off-by: Paul Stewart <pstew@chromium.org>
wpas_wps_in_use() was forcing WPS to be enabled unconditionally if P2P
support was included in the build. This is not really the correct
behavior for the case when P2P has been disabled at runtime. Change the
code here to verify runtime configuration of P2P before forcing WPS to
be enabled. This allows WSC IE to be left out from Probe Request frames
when scanning for APs without P2P or WPS being in use.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Even though we may not update P2P peer entry while connected to the
peer as a P2P client, we should not be expiring a P2P peer entry while
that peer is the GO in a group where we are connected as a P2P client.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
When a P2P group is removed, we better not leave possibly started
sched_scan running. This could happen when a separate group interface
was not used.
In addition, it looks safer to explicitly stop sched_scan before
starting P2P Listen or Find operations to make sure the offloaded
scanning is not running when doing similar P2P operations.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This patch fixes an issue with roaming for drivers that set
WPA_DRIVER_FLAGS_BSS_SELECTION (currently ath6kl). On moving to an AP
with a different BSSID, an EVENT_ASSOC is received and the subsequent
4-way handshake may fail because of a mismatch between the RSN IE in
message 3/4 and in Beacon/Probe Response. This happens only when the APs
use different RSN IE contents and ap_scan is set to 1, since
wpa_supplicant fails to update its cached IEs.
Initial association may fail, too, in case of multiple APs with
the same SSID, since BSSID selection is done by the driver and again
a mismatch could be seen.
Fix these two issues by clearing and updating the cached IEs on
receiving an Association event from the driver. Also, retrieve the
scan results when the new BSS information is not present locally.
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
dev_id=<P2P Device Addr> can now be specified as an argument to
p2p_find to request P2P find for a specific P2P device.
Signed-hostap: Jouni Malinen <j@w1.fi>
The deauthentication and disassociation events from nl80211 were being
processed identically regardless of whether the frame was generated by
the local STA or the AP. This resulted in fast reconnection mechanism
getting triggered even in the case where the disconnection was detected
locally (e.g., due to beacon loss) while this was supposed to happen
only in the case where the AP is sending an explicit Deauthentication
or Disassociation frame with a specific reason code.
Fix this by adding a new deauth/disassoc event variable to indicate
whether the event was generated locally.
Signed-hostap: Jouni Malinen <j@w1.fi>
Commit e9c3c1afed added a new D-Bus
method and that was enough to push the Introspect XML buffer over
the previously allocated 8000 bytes. Increase the buffer size to
make enough room for P2P interface. In addition, add a debug
message to indicate if an XML segment does not fit into the buffer
to make this types of failures somewhat easier to catch.
Signed-hostap: Jouni Malinen <j@w1.fi>
The authentication timeout could be triggered after the connection has
already been known to have failed. The event at that point can be
confusing, so better cancel the timeout when processing connection
failure.
Signed-hostap: Jouni Malinen <j@w1.fi>
If the BSSID of the AP is specified in the WPS command, the target
AP is likely already in the BSS table and its operating channel is
known. Use this information to speed up connection by only scanning
the known channel.
Signed-hostap: Jouni Malinen <j@w1.fi>
The 'network.target' is special (per systemd.special(7)), and is to be
brought up indirectly when network is actually configured (i.e. through
DHCP or static address settings).
Irrelevant of that, all services should be always installed in
multi-user.target.
[Bug 427]
This fixes issues with drivers that do not handle concurrent
remain-on-channel and scan operations in a case where Provision
Discovery Response frame is not received to stop the Action frame
handshake.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
If the freq parameter is specified and we are already running legacy STA
on a different frequency with a driver that does not support
multi-channel concurrency, reject p2p_group_add. Same code already
exists in the path of P2P connection with go negotiation but is missing
for autonomous GO.
Signed-hostap: Neeraj Garg <neerajkg@broadcom.com>
Add a new persistent group network block field, p2p_client_list, to
maintain a list of P2P Clients that have connected to a persistent
group. This allows GO of a persistent group to figure out more easily
whether re-invocation of a persistent group can be used with a specific
peer device.
Signed-hostap: Jouni Malinen <j@w1.fi>
Add "persistent=<network id>" line to P2P_PEER ctrl_iface data
if a persistent group credentials are available for this peer.
This makes it easier for external programs to figure out when
a persistent group could be re-invoked with this peer.
For now, this information is only available on the P2P client,
but similar information can be added for GO once a list of P2P
clients is maintained with the persistent group data.
Signed-hostap: Jouni Malinen <j@w1.fi>
The P2P module provides access to public peer data in struct
p2p_peer_info. Use this to build the P2P_PEER information in
ctrl_iface.c instead of providing such text format data from the P2P
module.
The internal data that was previously built in p2p_get_peer_info() as
part of the text format peer data is now available through a separate
p2p_get_peer_info_txt() function. This is still included in P2P_PEER
output to maintain backwards compatibility with external programs that
could have started to use this. However, it should be noted that this
data is not really supposed to be used for anything else apart from
debugging purposes and its format is subject to change.
Signed-hostap: Jouni Malinen <j@w1.fi>
p2p_get_peer_info() was used in multiple places just to check whether a
specific peer is known. This was not the designed use for the function,
so introduce a simpler function for that purpose to make it obvious that
the p2p_get_peer_info() function is actually used only in ctrl_iface.c.
Signed-hostap: Jouni Malinen <j@w1.fi>
The internal sched_scanning state needs to be cleared on this event
even if the events happen to get ordered in a way that the interface
gets disabled just prior to EVENT_SCHED_SCAN_STOPPED event.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
If the driver was associated in station mode just before the AP mode was
started, the station mode disassociation event may end up getting
delivered to wpa_supplicant only after the AP mode has been started.
This can result in unexpected attempt to reassociate back to the network
that was previously used in station mode. Avoid this by ignoring the
disassociation event.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The active station connection triggered wpa_supplicant AP mode startup
to try to update Beacon IEs before the AP mode was properly initialized
and that resulted in NULL pointer dereference in driver_nl80211.c. Fix
this by skipping the IE update before the AP mode is initialized.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
