Replace the previously used extension of IEEE 802.11 managed Ethertype
89-0d (originally added for Remote Request/Response in IEEE 802.11r)
with Ethertype 88-b7 (OUI Extended EtherType) for FT inter-AP
communication. The new design uses a more properly assigned identifier
for the messages.
This assigns the OUI 00:13:74 vendor-specific subtype 0x0001 for the new
hostapd AP-to-AP communication purposes. Subtypes 1 (PULL), 2 (RESP),
and 3 (PUSH) are also assigned in this commit for the R0KH-R1KH
protocol.
This breaks backward compatibility, i.e., hostapd needs to be updated on
all APs at the same time to allow FT to remain functional.
Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
With AP-AP communication, when hapd0 sends a packet, hapd1 can receive
it immediately and send a response. But hapd0 will only read and process
the response after it has returned from the sending context, that is
entered eloop again. So one does not need to consider the RX function of
the reply to run for the request sending hapd before the send calling
function has returned.
Previously, with intra-process communication, the packet is not
scheduled through eloop. Thus the RX handler of the reply might be run
while the sending context of the original request has not returned.
This might become problematic, e.g., when deferring a management frame
processing until an RRB response is received and then have the request
restarted and finished before the original request handling has been
stopped.
I'm not aware of any concrete bug this is currently triggering but came
across it while thinking of FT RRB AP-AP sequence numbering.
I think the non-eloop scheduling approach might be error-prone and thus
propose to model it more closely to the way the message would be
received from a socket. Additionally, this ensures that the tests model
AP-AP communication more closely to real world.
Solution: queue these packets through eloop.
Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
This leads to cleaner code overall, and also reduces the size
of the hostapd and wpa_supplicant binaries (in hwsim test build
on x86_64) by about 2.5 and 3.5KiB respectively.
The mechanical conversions all over the code were done with
the following spatch:
@@
expression SIZE, SRC;
expression a;
@@
-a = os_malloc(SIZE);
+a = os_memdup(SRC, SIZE);
<...
if (!a) {...}
...>
-os_memcpy(a, SRC, SIZE);
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The new broadcast_deauth parameter can be used to disable sending of the
Deauthentication frame whenever AP is started or stopped. The default
behavior remains identical to the past behavior (broadcast_deauth=1).
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Commit 01e2231fdc ('hostapd: Skip some
configuration steps for mesh cases') removed some operations based on
hapd->iface->mconf being NULL. This was within #ifdef CONFIG_MESH, so it
should not impact hostapd, but it can impact AP mode with
wpa_supplicant. That does not sound intentional, so make these
conditional on hapd->conf->mesh being enabled.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The local custom version of allocating and initializing struct
hostapd_data within wpa_supplicant_mesh_init() is problematic. This has
already missed couple of initialization steps that are required. Instead
of trying to remember to keep this up to date, use
hostapd_alloc_bss_data() so that there is only one place for this
initialization.
This is fixing a recent issue where FILS HLP started using
hapd->dhcp_server and expected that to be initialized to -1. For the
mesh case, that did not happen and when removing the interface, the FILS
HLP implementation ended up unregistering eloop socket for
hapd->dhcp_server (= 0). This could result in missing socket callbacks
for an arbitrary socket.
Signed-off-by: Jouni Malinen <j@w1.fi>
The new dhcp_server configuration parameter can now be used to configure
hostapd to act as a DHCP relay for DHCPDISCOVER messages received as
FILS HLP requests. The dhcp_rapid_commit_proxy=1 parameter can be used
to configure hostapd to convert 4 message DHCP exchange into a 2 message
exchange in case the DHCP server does not support DHCP rapid commit
option.
The fils_hlp_wait_time parameter can be used to set the time hostapd
waits for an HLP response. This matches the dot11HLPWaitTime in IEEE Std
802.11ai-2016.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
It was possible to try to do driver operations before the driver
interface had been initialized when processing a SIGHUP signal. This
would result in NULL pointer dereference. Fix this by skipping the steps
when SIGHUP is issued before the interface is enabled.
Signed-off-by: Jouni Malinen <j@w1.fi>
hostapd didn't send "TERMINATING" event when stopped by
SIGTERM. Android handles this event to stop monitor thread.
This commit adds "TERMINATING" event same as with wpa_supplicant.
Signed-off-by: Tomoharu Hatano <tomoharu.hatano@sonymobile.com>
We should unconditionally remove inactivity timers for wired network
cases. This commit checks for this after a new station association:
hapd->iface->drv_flags & WPA_DRIVER_FLAGS_WIRED
and then cancels the timeout and does not register a new one.
It prints out a debug message like this:
1476740180.276286: IEEE 802.1X: 00:02:00:00:00:07 CTRL_DIR entering
state FORCE_BOTH
1476740180.276295: hostapd_new_assoc_sta: canceled wired ap_handle_timer
timeout for 00:02:00:00:00:07
This was tested on a debian jessie amd64 system with a configured 120
second inactivity timer and the session did not timeout.
Signed-off-by: Sam Tannous <stannous@cumulusnetworks.com>
Previously, CONFIG_IEEE80211R enabled build that supports FT for both
station mode and AP mode. However, in most wpa_supplicant cases only
station mode FT is required and there is no need for AP mode FT.
Add support to differentiate between station mode FT and AP mode FT in
wpa_supplicant builds by adding CONFIG_IEEE80211R_AP that should be used
when AP mode FT support is required in addition to station mode FT. This
allows binary size to be reduced for builds that require only the
station side FT functionality.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
The Channel Center Frequency Segment subfields use the channel index
instead of frequency in MHz.
Signed-off-by: Beni Lev <beni.lev@intel.com>
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Add a configuration option in hostapd.conf and in neighbor report that
sets an AP as stationary. To enable this option on the current AP set
the config option stationary_ap to 1. To set a neighbor entry to be
marked as stationary add the word stat to the SET_NEIGHBOR command. This
option tells hostapd to send LCI data even if it is older than requested
by max age subelement in RRM request.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
A weakness in the initial client taxonomy mechanism is from storing both
the Probe and Associate in struct sta_info. struct sta_info is created
after a client associates (or starts authentication frame exchange),
which means that any Probe Request frames sent prior to association are
not retained. The Associate Request frame has to be seen, and then
another Probe Request frame after association, before we have a
signature for the client.
Most clients send lots of Probe Request frames (lots and lots and lots
of Probes, actually), but a few do not. ChromeOS is notably sparing in
sending Probe Request frames, it can take a long time before a signature
for a ChromeOS device is available.
Store the most recent Probe Request frame in struct hostapd_sta_info
tracking list. When a struct sta_info is created, move the Probe Request
frame information from struct hostapd_sta_info to struct sta_info.
Signed-off-by: dgentry@google.com (Denton Gentry)
Signed-off-by: denny@geekhold.com (Denton Gentry)
Signed-off-by: rofrankel@google.com (Richard Frankel)
Signed-off-by: richard@frankel.tv (Richard Frankel)
Previously, struct hostapd_iface sta_seen list head was initialized only
when completing interface setup. This left a window for operation that
could potentially iterate through the list before the list head has been
initialized. While the existing code checked iface->num_sta_seen to
avoid this case, it is much cleaner to initialize the list when struct
hostapd_iface is allocated to avoid any accidental missing of the extra
checks before list iteration.
Signed-off-by: Jouni Malinen <j@w1.fi>
Previously, this was initialized in hostapd_setup_bss() which made it
possible for a REMOVE_NEIGHBOR control interface command to be issued
prior to the list head pointers having been set. That resulted in a NULL
pointer dereference. Fix this by initializing the list head at the time
the data structure gets allocated.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This can be used to mandate the presence of the Message-Authenticator
attribute on CoA/Disconnect-Request packets.
Signed-off-by: Nick Lowe <nick.lowe@lugatech.com>
hostapd deinit functions were not ready to handle a case where the data
structures were not fully initialized. Make these more robust to allow
wpa_supplicant mesh implementation to use the current deinit design in
OOM error cases without causing NULL pointer dereferences.
Signed-off-by: Jouni Malinen <j@w1.fi>
Add a hostapd control interface command REQ_LCI to request LCI from an
associated station using radio measurement.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Add a configurable neighbor database that includes the content of
Nighbor Report element, LCI and Location Civic subelements and SSID.
All parameters for a neighbor must be updated at once; Neighbor Report
element and SSID are mandatory, LCI and civic are optional. The age of
LCI is set to the time of neighbor update.
The control interface API is:
SET_NEIGHBOR <BSSID> <ssid=SSID> <nr=data> [lci=<data>] [civic=<data>]
To delete a neighbor use:
REMOVE_NEIGHBOR <BSSID> <SSID>
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Interface additions/removals are not guaranteed to be for the driver
listening to the kernel events. As such, send the events to
wpa_supplicant_event_global() which can then pick the correct interface
registered with wpa_supplicant to send the event to.
Signed-off-by: Roy Marples <roy@marples.name>
Add a new 'use_driver_iface_addr' configuration parameter to allow use
of the default interface address generated by the driver on interface
creation. This can be useful when specific MAC addresses were allocated
to the device and we want to use them for multi-BSS operation.
Signed-off-by: Eliad Peller <eliad@wizery.com>
Add UDP support for ctrl_iface:
New config option could be set:
CONFIG_CTRL_IFACE=udp
CONFIG_CTRL_IFACE=udp-remote
CONFIG_CTRL_IFACE=udp6
CONFIG_CTRL_IFACE=udp6-remote
And hostapd_cli usage:
hostapd_cli -i localhost:8877
Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
There is no need to maintain two implementations of the functionality.
is_zero_ether_addr() is easier to understand, so use it.
Signed-off-by: Jouni Malinen <j@w1.fi>
r1_key_holder is an identifier that was always set to zero if unless
configured before.
See 11.6.1.7.4 of IEEE Std 802.11-2012 which reads
"R1KH-ID is a MAC address of the holder of the PMK-R1 in the
Authenticator of the AP"
See 12.2.2 of IEEE Std 802.11-2012 which reads
"Each R0KH-ID and R1KH-ID is assumed to be expressed as a unique
identifier within the mobility domain."
"The R1KH-ID shall be set to a MAC address of the physical entity
that stores the PMK-R1 ..."
Defaulting this to BSSID is a more reasonable value since we have not
rejected the missing r1_key_holder as invalid configuration.
Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
Rework the Acct-Session-Id and Acct-Multi-Session-Id implementation to
give better global and temporal uniqueness. Previously, only 32-bits of
the Acct-Session-Id would contain random data, the other 32-bits would
be incremented. Previously, the Acct-Multi-Session-Id would not use
random data. Switch from two u32 variables to a single u64 for the
Acct-Session-Id and Acct-Multi-Session-Id. Do not increment, this serves
no legitimate purpose. Exclusively use os_get_random() to get quality
random numbers, do not use or mix in the time. Inherently take a
dependency on /dev/urandom working properly therefore. Remove the global
Acct-Session-Id and Acct-Multi-Session-Id values that serve no
legitimate purpose.
Signed-off-by: Nick Lowe <nick.lowe@lugatech.com>
This makes it easier to follow a debug log from a hostapd process that
manages multiple interfaces.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The ap_sta_deauth_cb and ap_sta_disassoc_cb eloop timeouts are used to
clear a disconnecting STA from the kernel driver if the STA did not ACK
the Deauthentication/Disassociation frame from the AP within two
seconds. However, it was possible for a STA to not ACK such a frame,
e.g., when the disconnection happened due to hostapd pruning old
associations from other BSSes and the STA was not on the old channel
anymore. If that same STA then started a new authentication/association
with the BSS, the two second timeout could trigger during this new
association and result in the STA entry getting removed from the kernel.
Fix this by canceling these eloop timeouts when receiving an indication
of a new authentication or association.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
When multiple interfaces across mutiple radios are started using a
single instance of hostapd, they all come up at different times
depending upon how long the ACS and HT scan take on each radio. This
will result in stations (that already have the AP profile) associating
with the first interfaces that comes up. For example in a dual band
radio case (2G and 5G) with ACS enabled, 2G always comes up first
because the ACS scan takes less time on 2G and this results in all
stations associating with the 2G interface first.
This feature brings up all the interfaces at the same time. The list of
interfaces specified via hostapd.conf files on the command line are all
marked as sync interfaces. All the interfaces are synchronized in
hostapd_setup_interface_complete().
This feature is turned on with '-S' commmand line option.
Signed-off-by: Srinivasa Duvvuri <sduvvuri@chromium.org>
Fix and extend the ieee80211_freq_to_channel_ext() function to deal
correctly with VHT operating classes (128, 129, 130).
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
The CSA channel and operating class values need to be set for all types
of channel switch (i.e., either if it's triggered by the control
interfaces or due to the GO-follows-STA flow). To do so, move the code
that sets them from the GO-follows-STA flow to the more generic
hostapd_fill_csa_settings() function.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
The hostapd_hw_get_channel() function can't be used to convert center
frequencies to channel numbers, because the hw mode lists don't have all
the center frequencies. The hw mode lists have the main channel
frequencies and flags to indicate the channel topography.
For instance, channel 5805 with VHT80- has the channel center frequency
segment 0 at 5775. This segment is only indicated indirectly in the hw
mode list by the HOSTAPD_CHAN_VHT_50_30 flag. The hw mode list doesn't
have any elements with frequency 5775 to allow the conversion to a
channel number. Thus, we need to use ieee80211_freq_to_chan() instead.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Extended channel switch provides an ability to switch between operating
classes and is required for P2P Devices by the P2P specification when
switching in 5 GHz.
When the operating class is provided for channel switch, the AP/P2P GO
will use eCSA IE in addition to the regular CSA IE both on 2.4 GHz and 5
GHz bands.
Transitions between different hw_modes are not supported.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Channel switch may be performed using both CSA and eCSA IEs together.
This may happen, for example with a P2P GO on band A with legacy
clients. Extend driver API to support up to 2 CSA counters.
This patch also includes the required implementation for nl80211.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
When building Beacon and Probe Response frames for the target channel,
consider bandwidth parameter for VHT channels. In addition, add support
for updating vht_oper_centr_freq_seg0_idx and
vht_oper_centr_freq_seg1_idx.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reset hapd->num_probereq_cb to 0 on an interface deinit to avoid
unexpected behavior if the same interface is enabled again without fully
freeing the data structures. hostapd_register_probereq_cb() increments
hapd->num_probereq_cb by one and leaves all old values unchanged. In
this deinit+init case, that would result in the first entry in the list
having an uninitialized pointer and the next Probe Request frame
processing would likely cause the process to terminate on segmentation
fault.
This issue could be hit when hostapd was used with WPS enabled (non-zero
wps_state configuration parameter) and control interface command DISABLE
and ENABLE were used.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
hostapd can now be configured to track unconnected stations based on
Probe Request frames seen from them. This can be used, e.g., to detect
dualband capable station before they have associated. Such information
could then be used to provide guidance on which colocated BSS to use in
case of a dualband AP that operates concurrently on multiple bands under
the control of a single hostapd process.
Signed-off-by: Jouni Malinen <j@w1.fi>
This buffer is owned by the FST module, so mark it const in the
set_ies() callback to make it clearer which component is responsible for
modifying and freeing this.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This new mechanism can be used to combine multiple periodic AP
(including P2P GO) task into a single eloop timeout to minimize number
of wakeups for the process. hostapd gets its own periodic caller and
wpa_supplicant uses the previously added timer to trigger these calls.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The caller is not expected to free or modify the value since this is
returning a reference to a buffer maintained by the upper layer.
Signed-off-by: Jouni Malinen <j@w1.fi>
This extends the hostapd global control interface ADD command to allow
driver wrapper to be specified ("ADD <ifname> <ctrl_iface> <driver>").
Previously, this case that did not use a configuration file allowed only
the default driver wrapper to be used.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Update ACS driver offload feature for VHT configuration. In addition,
this allows the chanlist parameter to be used to specify which channels
are included as options for the offloaded ACS case.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This event was previously used only when disabling AP mode operation
through hostapd control interface. Make this more consistent by
providing same indication when disabling hostapd interface through the
interface deinit path. This adds the event to the case where a full
hostapd radio instance is removed which also applies for the
wpa_supplicant AP mode operations.
Signed-off-by: Jouni Malinen <j@w1.fi>
Add handling logic for DFS offloaded case, and add a helper function
that takes the frequency (MHz) as a param and returns 1 if given channel
requires DFS, or 0 otherwise.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This change adds the function hostapd_config_clear_wpa_psk() that
deletes an entire wpa_psk structure, making sure to follow the linked
list and to free the allocated memory of each PSK node. This helps to
prevent memory leaks when using PSKs from multiple sources and
reconfiguring the AP during runtime.
Signed-off-by: Stefan Tomanek <stefan.tomanek@wertarbyte.de>
If HT40 co-ex scan fails due to the driver rejecting scan triggers
multiple times, it was possible for the ap_ht40_scan_retry() timeout
being left behind and it getting run after hapd->drv_priv has been
cleared. This would result in NULL pointer dereference in
driver_nl80211_scan.c. Fix this by canceling the timeout when disabling
the interface.
Signed-off-by: Jouni Malinen <j@w1.fi>
This extends Disconnect-Request processing to check against PMKSA cache
entries if no active session (STA association) match the request.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Previously, the first matching STA was picked. That is not really the
design in RFC 5176, so extend this matching code to go through all
specified session identification attributes and verify that all of them
match. In addition, check for a possible case of multiple sessions
matching. If such a case is detected, return with Disconnect-NAK and
Error-Code 508 (multiple session selection not supported).
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The local conf pointer needs to be cleared once it gets assigned to
hapd_iface to avoid double-free of the configuration data on error path.
Signed-off-by: Jouni Malinen <j@w1.fi>
The per-BSS configuration information needs to be freed if hostapd fails
to add a new interface for a BSS added with "ADD bss_config=..."
command.
Signed-off-by: Jouni Malinen <j@w1.fi>
If hostapd_alloc_bss_data() failed to allocate the struct hostapd_data
instance, dynamic interface addition path ended up trying to dereference
freed memory due to incorrect cleanup steps. Fix this by decrementing
the interface count when the newly added interface is removed. In
addition, make the setup more robust by clearing all changes within
hostapd_data_alloc() if any of the allocations fails.
Signed-off-by: Jouni Malinen <j@w1.fi>
Some of the struct hostapd_data variables get initialized with allocated
memory in the P2P GO case even before hapd->started has been set to 1.
As such, hostapd_free_hapd_data() needs to free these even if
!hapd->stated.
Signed-off-by: Jouni Malinen <j@w1.fi>
There is a possible race condition between receiving the
NEW_PEER_CANDIDATE event and the Authentication frame from the peer.
Previously, if the Authentication frame RX event was indicated first,
that frame got dropped silently. Now, this frame is still dropped, but a
copy of it is stored and the frame gets processed on the following
NEW_PEER_CANDIDATE event if that is received for the same peer within
two seconds.
Signed-off-by: Jouni Malinen <j@w1.fi>
If "ADD bss_config=" command failed in driver_init() or
hostapd_setup_interface(), some of the allocated resources were not
freed properly.
Signed-off-by: Jouni Malinen <j@w1.fi>
This commit establishes the infrastructure, and handles the Neighbor
Solicitation and Neighbor Advertisement frames. This will be extended
in the future to handle other frames.
Signed-off-by: Kyeyoon Park <kyeyoonp@qca.qualcomm.com>
Proxy ARP allows the AP devices to keep track of the hardware address to
IP address mapping of the STA devices within the BSS. When a request for
such information is made (i.e., ARP request, Neighbor Solicitation), the
AP will respond on behalf of the STA device within the BSS. Such
requests could originate from a device within the BSS or also from the
bridge. In the process of the AP replying to the request (i.e., ARP
reply, Neighbor Advertisement), the AP will drop the original request
frame. The relevant STA will not even know that such information was
ever requested.
This feature is a requirement for Hotspot 2.0, and is defined in IEEE
Std 802.11-2012, 10.23.13. While the Proxy ARP support code mainly
resides in the kernel bridge code, in order to optimize the performance
and simplify kernel implementation, the DHCP snooping code was added to
the hostapd.
Signed-off-by: Kyeyoon Park <kyeyoonp@qca.qualcomm.com>
Modify hostapd.c logic to add checks for valid mconf data structure:
- For hostapd_setup_bss we don't need to flush old stations in case
we're rejoining a mesh network.
- In hostapd_setup_interface_complete, we don't need to setup the
interface until we join the mesh (same reasoning for
hostapd_tx_queue_params).
Signed-off-by: Javier Lopez <jlopex@gmail.com>
Signed-off-by: Jason Mobarak <x@jason.mobarak.name>
The new "bss_load_update_period" parameter can be used to configure
hostapd to advertise its BSS Load element in Beacon and Probe Response
frames. This parameter is in the units of BUs (Beacon Units).
When enabled, the STA Count and the Channel Utilization value will be
updated periodically in the BSS Load element. The AAC is set to 0 sinze
explicit admission control is not supported. Channel Utilization is
calculated based on the channel survey information from the driver and
as such, requires a driver that supports providing that information for
the current operating channel.
Signed-off-by: Kyeyoon Park <kyeyoonp@qca.qualcomm.com>
This fixes couple of code paths where the WPA_DRIVER_FLAGS_DFS_OFFLOAD
flag was not checked properly and unexpected DFS operations were
initiated (and failed) in case the driver handles all these steps.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Use an explicit memset call to clear any hostapd configuration parameter
that contains private information like keys or identity. This brings in
an additional layer of protection by reducing the length of time this
type of private data is kept in memory.
Signed-off-by: Jouni Malinen <j@w1.fi>
It's worth giving a try to fallback to re-starting BSSes at least once
hoping it works out instead of just leaving BSSes disabled.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Earlier commit related to MAC address based access control list
offloaded to the driver was not sending ACL configuration to the driver
if the MAC address list was empty. Remove this check as empty access
control list is a valid use case and sending ACL parameters should not
be dependent on whether the list is empty.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Couple of code paths in hostapd.c could have left hapd->drv_priv
pointing to memory that was freed in driver_nl80211.c when a secondary
BSS interface is removed. This could result in use of freed memory and
segfault when the next driver operation (likely during interface
deinit/removal). Fix this by clearing hapd->drv_priv when there is
reason to believe that the old value is not valid within the driver
wrapper anymore.
Signed-off-by: Jouni Malinen <j@w1.fi>
These three calls were used already in three different paths. Use a
helper function to avoid adding even more copies of this.
Signed-off-by: Jouni Malinen <j@w1.fi>
If for some reason interface setup fails mid-way when setting up
multi-BSS AP it was possible to get segmentation fault because driver
was not properly cleaned up.
One possible trigger, when using nl80211 driver, was udev renaming an
interface created by hostapd causing, e.g., linux_set_iface_flags() to
fail.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
This variable is updated when calling hostapd_if_add(), so it makes
sense to do the same thing when calling hostapd_if_remove().
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Performing, e.g. `wpa_cli -p /var/run/hostapd raw DISABLE` twice led to
hostapd segmentation fault if multiple BSSes were configured. Fix this
by checking if there is anything to disable at all before trying.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
The current RADIUS server pointer was updated after each SET command
which broke parsing of multiple RADIUS servers over the control
interface. Fix this by doing the final RADIUS server pointer updates
only once the full configuration is available.
Signed-off-by: Jouni Malinen <j@w1.fi>
Previously, hostapd had to be started with at least one of the
configuration files enabling TNC for TNC to be usable. Change this to
allow TNC to be enabled when the first interface with TNC enabled gets
added during runtime.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes the initial OBSS scans in AP mode before starting 40 MHz BSS
more robust. In addition, HT20 can be used as a backup option if none of
the scans succeed.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Extend the minimal HT 20/40 co-ex support to include dynamic changes
during the lifetime of the BSS. If any STA connects to a 2.4 GHz AP with
40 MHz intolerant bit set then the AP will switch to 20 MHz operating
mode.
If for a period of time specified by OBSS delay factor and OBSS scan
interval AP does not have any information about 40 MHz intolerant STAs,
the BSS is switched from HT20 to HT40 mode.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
When primary and secondary channel were switched and config was
reloaded, secondary channel was incorrectly overwritten.
Proceed as for other settings that should not be changed and don't
allow to overwrite.
Signed-off-by: Pawel Kulakowski <pawel.kulakowski@tieto.com>
Especially when multiple BSSes are used with ACS, number of the error
paths were not cleaning up driver initialization properly. This could
result in using freed memory and crashing the process if ACS failed.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
There was possibility that the current channel in Beacon information
element was incorrectly set. This problem was easily observed when
primary and secondary channel were switched and then some of hostapd
settings (for example password) were changed using WPS External
Registrar. This caused hostapd_reload_config() function overwrite the
current channel information from config file.
This patch prevents this situation and does not allow to overwrite
channel and some other settings when config is reloaded.
Signed-off-by: Pawel Kulakowski <pawel.kulakowski@tieto.com>
It was possible for the control interface and some of the BSS setup to
be left partially initialized in failure cases while the BSS structures
were still freed. Fix this by properly cleaning up anything that may
have passed initialization successfully before freeing memory.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Previously, some of the last initialization steps could fail without
clearly marking the interface disabled. For example, configuring the
channel to the driver could fail, but hostapd would not clearly identify
as the interface not being in functional state apart from not moving it
to the ENABLED state. Send an AP-DISABLED event and mark interface state
DISABLED if such a setup operation fails.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Previously, this was enabled only at msgdump verbosity level, but any
level that is more verbose than it should also be included.
Signed-off-by: Jouni Malinen <j@w1.fi>
handle_assoc_cb() got this addition, but the check in
hostapd_new_assoc_sta() was not modified to be aware of the OSEN special
case for EAPOL state machines to be used for marking a STA authorized.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This was done in handle_assoc_cb() in ieee802_11.c for drivers that use
hostapd SME/MLME. However, drivers that include SME/MLME implementation
do not use that function and the STA flag needs to be set when
processing the association notification. This is needed to get the STA
entry into showing the proper authorized state and to get the
AP-STA-CONNECTED/DISCONNECTED events on the control interface.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit adds an option to optimize AP teardown by leaving the
deletion of keys (including group keys) and stations to the driver.
This optimization option should be used if the driver supports stations
and keys removal when stopping an AP.
For example, the optimization option will always be used for cfg80211
drivers since cfg80211 shall always remove stations and keys when
stopping an AP (in order to support cases where the AP is disabled
without the knowledge of wpa_supplicant/hostapd).
Signed-off-by: Moshe Benji <moshe.benji@intel.com>
If hapd_iface->bss[i] == NULL, this could have resulted in NULL pointer
dereference in the debug print. Avoid this by skipping the message in
case of NULL pointer. In addition, clear iface->bss[i] to NULL for
additional robustness even though this array gets freed immediately.
Signed-off-by: Jouni Malinen <j@w1.fi>
It looks like leaving behind the freed pointed at the end of the array
could end up in a crash triggered by double free in some cases.
Signed-off-by: Jouni Malinen <j@w1.fi>
This allows NAS-IP-Address, NAS-Identifier, and NAS-IPv6-Address to be
included in the Disconnect-Request packets.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
When a station is disconnected based on Disconnect-Request, it is better
to force the station to go through full EAP authentication if it tries
to reconnect.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Before this patch, 1 second timeout was used for regulatory updates. In
some cases, specially when we reload driver modules on some slower
platforms this could take more than 1 second (about 2 seconds). This is
important specially for DFS case, where we have to have correct DFS
region before we will start CAC. In other case (unknown DFS region), CAC
will fail. 5 seconds should be enough for all cases.
Signed-hostap: Janusz Dziedzic <janusz.dziedzic@tieto.com>
It is possible for the configuration to be temporarily invalid when
adding a new AP through SET commands followed by ENABLE. Avoid this
issue by using less strict validation on SET commands and perform full
configuration validation only on ENABLE. Use cases with configuration
file maintain their previous behavior, i.e., full validation after the
file has been read.
Signed-hostap: Jouni Malinen <j@w1.fi>
These were somewhat more hidden to avoid direct use, but there are now
numerous places where these are needed and more justification to make
the extern int declarations available from wpa_debug.h. In addition,
this avoids some warnings from sparse.
Signed-hostap: Jouni Malinen <j@w1.fi>
When CSA flow starts, store the entire struct hostapd_freq_params and
not only CS frequency as it was before. The additional freq_params are
required to advertise CS supplementary IEs such as secondary channel,
wide bandwidth CS, etc.
Signed-hostap: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
This allows use of structs (and not only pointers) defined in drivers.h.
Remove also some not needed forward declarations and redundant includes.
Signed-hostap: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
If more BSSes are added in config file than are supported by the driver,
segmentation fault can appear. For this case, the interface_added flag
needs to be cleared if adding a new BSS fails.
Signed-hostap: Marek Kwaczynski <marek.kwaczynski@tieto.com>
Some non-mac80211 drivers, such as ath6kl, support STA inactivity timer
in firmware and may not provide connected stations' idle time to the
userspace. If the driver indicates support for offloaded operation, do
not start the inactivity timer in the hostapd.
Signed-hostap: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
struct beacon_data contains a lot of pointers. Make sure it gets cleared
to zero if hostapd_build_beacon_data() gets called from a path that does
not clear the structure first.
Signed-hostap: Janusz Dziedzic <janusz.dziedzic@tieto.com>
The 'started' state was tracked incorrectly. It also broke DFS
as it was using hostapd_enable/disable_iface() functions.
Signed-hostap: Michal Kazior <michal.kazior@tieto.com>
Build CSA settings and call the driver to perform the switch. Construct
Beacon, Probe Response, and (Re)Association Response frames both for CSA
period and for the new channel. These frames are built based on the
current configuration. Add CSA IE in Beacon and Probe Response frames.
Signed-hostap: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
We were not filtering the EVENT_CHANNEL_LIST_CHANGED events based on the
regulatory hint initiator. So wait for EVENT_CHANNEL_LIST_CHANGED event
after our own change was triggered even when regulatory hint initiator
was the driver. This could result in the wait for the channel list to be
updated to be terminated before the real change has occurred and as
such, old channel list remaining in use when configuring
hostapd/wpa_supplicant country parameter. Fix this by filtering the
hints according to the initiator and only regulatory hints initiated by
user will be used to stop the wait.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
It is possible for additional BSSs to be added while the primary
interface is still in the process of determining channel parameters (HT
co-ex scan, ACS, DFS). Do not enable secondary interfaces in such state
immediately, but instead, wait for the pending operation on the primary
interface to complete. Once that's done, the added extra BSSs will also
be enabled in hostapd_setup_interface_complete().
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Reject multiple calls to hostapd_setup_bss() for any specific interface.
hostapd_cleanup() must have been called first before trying to restart a
BSS.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
hostapd_bss_deinit() takes care of freeing the associated stations and
calling hostapd_cleanup() to deinit per-BSS services.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This reverts parts of commit 390e489c0d
that tried to enable removal of the first BSS. Since that operation is
now forced to remove all BSSs, these changes are not needed. The
hostapd_if_remove() operation in hostapd_free_hapd_data() is problematic
for the first BSS since it ends up freeing driver wrapper information
that is needed later when deinitializing the driver wrapper.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Since the control interface is now initialized as part of
hostapd_setup_interface(), it needs to be deinitialized on the error
path.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
If a secondary BSS is removed while it is waiting for the primary BSS to
complete channel setup (e.g., due to HT co-ex scan, ACS, or DFS), the
hostapd_data instance has not yet been initialized. Fix the BSS removal
code to take this special case into account and not try to deinitialize
the hostapd_data instance that has not yet been started.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The changes in commit 5592065850 to allow
any BSS to be removed were a bit too early since there are still number
of areas that use the first BSS as a special case. Especially the
driver_ops API is going to require quite a bit of cleanup before removal
of the first BSS without the other BSSes of the same radio can be done
safely.
For now, force all BSSs to be removed in case the first one is removed.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Limit the calls to eloop_terminate() to happen only for the
initialization failure from the interfaces that we specified on the
command line. This allows hostapd process to continue operating even if
a dynamically added interface fails to start up. This allows the upper
layer software to fix a configuration error and retry.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Better share the same function for initializing control interface from
the two possible paths that can add a new interface to hostapd.
Signed-hostap: Jouni Malinen <j@w1.fi>
This is a per-BSS configuration parameter and as such, needs to be
configured to the driver from hostapd_setup_bss() instead of
hostapd_driver_init().
Signed-hostap: Jouni Malinen <j@w1.fi>
DFS operations are specific to the interface (radio/wiphy), not BSS
(netdev/vif), so hostapd_iface is the appropriate element to use in
them.
Signed-hostap: Jouni Malinen <j@w1.fi>
If per-BSS configuration enabling did not provide a phy name, iface->phy
was left empty. It can be helpful to set this up automatically, so fill
that when initializing the interface.
Signed-hostap: Jouni Malinen <j@w1.fi>
If hostapd is requested to set the country code and the previous country
code differs from the new one, the channel list information from the
driver may change. This change may not be instant, so wait for an
EVENT_CHANNEL_LIST_CHANGED event before continuing interface setup with
fetching of the channel list information. This fixes issues where the
selected channel is not available based on the previous regulatory data
and update through CRDA takes some time.
Signed-hostap: Jouni Malinen <j@w1.fi>
Channel determination may take considerable time when ACS or DFS is
used, so it is useful to be able to observe this process through the
control interface. Move the initialization of the control interfaces to
happen before channel determination so that this can be achieved.
Signed-hostap: Jouni Malinen <j@w1.fi>
Use hostapd_interface_init2() for all interfaces instead of the
previously used different paths for per-interface-config and
per-BSS-config cases. This moves the calls to hostapd_driver_init() and
hostapd_setup_interface() to happen after all configuration files have
been read.
Signed-hostap: Jouni Malinen <j@w1.fi>
Previously, ENABLE command ended up freeing the hostapd_iface context on
initialization failures, but did not even remove the interface from the
list of available interfaces. This resulted in use of freed memory with
any following operation on the same interface. In addition, removing the
interface on initialization failure does not seem like the best
approach. Fix both of these issues by leaving the interface instance in
memory, but in disabled state so that the configuration can be fixed and
ENABLE used again to enable the interface or REMOVE used to remove the
interface.
Signed-hostap: Jouni Malinen <j@w1.fi>
When removing and re-adding the first wlan# netdev to hostapd
dynamically, the netdev is already present and should not be removed and
re-added to maintain its state as not-added-by-hostapd so that it does
not get removed automatically.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The global control interface command "REMOVE <ifname>" can now be used
to remove a single virtual interface (BSS) without affecting other
virtual interfaces on the same radio.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The global control interface command "ADD
bss_config=<phyname>:<config file>" can now be used to add a single
virtual interface (BSS) to an interface.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This moves the vif added check from core hostapd to the driver wrapper
(only driver_nl80211.c uses this) and reorders operations a bit to allow
the first BSS (vif) to be removed from a multi-BSS setup.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
If radar was detected single BSS is notified about it. This caused only
that single BSS to be stopped and restarted. However, due to nl80211
interface combinations the BSS was not started on a new channel and
other BSSes remained operating on the old channel.
The downside is that hostapd_disable_iface() causes deauth frames to be
sent. This is undesired but on the other hand it doesn't make sense to
create workarounds that imitate CSA's 'block tx'. For proper Tx
quiescing CSA should be properly implemented.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Reject RELOAD control interface command if the dynamic configuration
changes have resulted into a state where the configuration is invalid.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This makes it more convenient to move BSS configuration entries between
struct hostapd_config instances to clean up per-BSS configuration file
design.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This may be needed if the wpa_psk information for previously derived
from passphrase and either the SSID or the passphrase has changed.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Instead of duplicating the functionality and missing changes (like the
hostapd_broadcast_wep_clear() call), use the hostapd_clear_old()
function that was already used for the similar case with configuration
file reload.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Add DFS structures/events handlers, CAC handling, and radar detection.
By default, after radar is detected or the channel became unavailable, a
random channel will be chosen.
This patches are based on the original work by Boris Presman and
Victor Goldenshtein. Most of the DFS code is moved to a new dfs.c/dfs.h
files.
Cc: Boris Presman <boris.presman@ti.com>
Cc: Victor Goldenshtein <victorg@ti.com>
Signed-hostap: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-hostap: Janusz Dziedzic <janusz.dziedzic@tieto.com>
