The new optional group_ssid=<hexdump> argument in the P2PS-PROV-DONE
event can be used to help in identifying the exact group if there have
been multiple groups with the same P2P Interface Address in short period
of time.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Commit f8a80e39b3 ('P2PS: Change
connection capability handling') added the identical P2PS_SETUP_CLIENT
check into two places within p2ps_group_capability(). However, only the
first one of these can be reached. In the second case, role can only
have values 0 or P2PS_SETUP_NEW and as such, the P2PS_SETUP_CLIENT case
is not possible. It looks like the first part of the commit is
sufficient, so remove the dead code added by the second part.
Signed-off-by: Jouni Malinen <j@w1.fi>
Fix wpas_p2p_invite() to call p2p_set_own_pref_freq_list() after the
NULL check, to avoid NULL pointer dereference if P2P initialization were
to have failed or P2P module getting deinitialized.
Signed-off-by: Ayala Beker <ayala.beker@intel.com>
This was already working for the case where a separate group interface
is used due to the recent commit
328f49acfe ('P2P: Complete group formation
on client data connection'). However, the case of no separate group
interface was used did not clear the interface state properly on data
connection. Fix this by setting the group formation information in
wpas_start_p2p_client().
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Commit f05cee9714 ('P2P: Clear
p2p_in_invitation on cancel') added a wpas_p2p_cancel() case to call
wpas_p2p_group_formation_failed() if wpa_s->p2p_in_invitation is set.
This is done in a loop going through wpa_s->next pointers. However, the
call here can result in removing the interface and freeing wpa_s. The
following attempt to read wpa_s->next is from freed memory and that can
result in process termination when using a separate P2P group interface
and issuing P2P_CANCEL on a group that was started through re-invocation
of a persistent group.
The recent commit 328f49acfe ('P2P:
Complete group formation on client data connection') "fixed" this by
accident since wpa_s->p2p_in_invitation gets cleared in the sequence
that could hit this issue and this results in P2P_CANCEL getting
rejected. However, the real bug here is in the loop that continues after
possible wpa_s instance deletion. Fix that by breaking out of the loop.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This was already the case in the GO role where the first client
connection is waited before marking
wpa_s->p2p_go_group_formation_completed = 1 and clearing
wpa_s->global->p2p_group_formation. However, in the P2P Client role,
that was done already at the completion of the WPS exchange. This can be
problematic since group formation timeout may still try to clear the
group and with wpa_s->global->p2p_group_formation == NULL, the correct
group interface may not be found.
Fix this by postponing clearing of wpa_s->global->p2p_group_formation on
the P2P Client side until the data connection has been completed and
group is declared started.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
A hwsim test sequence was able to hit a SIGSEGV in
p2p_go_save_group_common_freqs() called by p2p_go_configured() callback
in a case where a non-P2P AP mode operation is started in wpa_supplicant
(wpas_ap_wep test case). This callback should not have happened for
non-P2P case and the debug logs did not make it clear how this could
happen. In addition, it is unclear how this could be reproduced.
To avoid this type of issues, clear the wpa_s->ap_configured_cb pointer
as soon as the first call to the function happens. In addition, verify
that wpa_s->go_params is available before processing the GO configured
callback.
Signed-off-by: Jouni Malinen <j@w1.fi>
The new max_oper_chwidth and freq2 arguments to P2P_CONNECT, P2P_INVITE,
and P2P_GROUP_ADD control interface commands can be used to request
larger VHT operating channel bandwidth to be used than the previously
used maximum 80 MHz.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This extends the previous design that covered only the VHT 80 MHz cases
for VHT channel flags. New functions are introduced to allow 160 MHz
bandwidth cases to determine the center channel and check availability
of a 160 MHz channel.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This adds definitions for the global operating classes 129 and 130 for
VHT 80+80 MHz and 160 MHz use cases.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
When an invitation to join an existing group is accepted by the
peer device, set p2p_go_wait_client to the current time so
that wpas_p2p_in_progress() would return != 0, thus preventing
P2P CSA, scanning etc., that would interfere with the peer
device connection.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
When clearing pending TX action to start a new P2P operation like
P2P_FIND or P2P_LISTEN, wpas_p2p_action_tx_clear() was used to clear
the send action work. However, in cases where the action work has wait
time, it is not cleared immediately but only after the wait time ends.
This may cause delay in starting the P2P operation.
Fix that by always clearing the send action work immediately on these
P2P commands that result in immediate P2P state change and practically
stopping a previous operation, if one was pending.
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
This makes it easier to analyze debug logs for issues related to
multiple pending Action TX frames.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
When one peer doesn't include a persistent group info in PD Request
the other peer shouldn't report a persistent group usage with this
peer even if such a persistent group exists locally. This condition
could be violated in the previous implementation.
In case a local persistent group exists and the
wpas_p2ps_prov_complete() function is called with persist_ssid parameter
set to NULL, wpa_supplicant reported P2PS-PROV-DONE with persist=<idx>
instead of conncap=<role> parameter.
This happened because the wpas_p2p_get_persistent() function was called
without verification whether the persist_ssid was set to NULL. In this
case the wpas_p2p_get_persistent() returns the first existing persistent
group matching the P2P Device Address without verifying the group's
SSID. After that the group ID is used as persist=<idx> parameter of
P2PS-PROV-DONE event.
Fix the issue by adding persist_ssid and persist_ssid_size verification
as a condition for the wpas_p2p_get_persistent() call.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
On successful P2P PD, report the chosen frequency in case the local
device is going to be the P2P GO, so in can later be used to instantiate
the new P2P GO, etc.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Add operating channel selection and channel list processing similar to
that done when building GO Negotiation Request, i.e., consider the
currently used channels, configured channels, etc.
P2PS introduces a flow where a responder needs to provide channel data
without being previously aware of the current constraints, i.e., the
channels currently in use by other interfaces. To handle this, extend
the get_group_capability() callback to also handle channel selection
aspects of group capabilities.
In case there is an active P2P GO that is going to be used for the P2PS
PD, force its current operating frequency in the PD attributes.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Change the connection capability handling so that in case there are no
active roles, the peer has an active GO, and the advertisement supports
operation as a client, the returned connection capability is set to
client.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
The code was iterating all the interfaces, and for each interface
iterated all the network blocks to count active P2P GO and P2P Client
interfaces.
Change the code to reuse wpas_p2p_get_go_group() to get a P2P GO
interface and add wpas_p2p_get_cli_group() and use it to find a
P2P Client interface, and use these objects when evaluating the
group capability.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Re-factor wpas_p2p_get_go_group() to:
1. Skip the dedicated P2P Device management interface if it is used.
2. Instead of iterating all the interface configured networks,
only access the current_ssid pointer to check if the current
interface is acting as a persistent P2P GO.
To avoid code duplication, also re-factor wpas_p2p_group_go_ssid()
to call wpas_p2p_get_go_group().
Signed-off-by: Ilan Peer <ilan.peer@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>
Add new GO frequency move policy. The P2P_GO_FREQ_MOVE_SCM_ECSA prefers
SCM if all the clients advertise eCSA support and the candidate
frequency is one of the group common frequencies.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Do not consider moving GOs to a new channel if one of them is in the
middle of CSA. In addition, call wpas_p2p_update_channel_list() after
EVENT_CH_SWITCH is handled.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
wpas_p2p_move_go_csa() uses wpas_p2p_init_p2p_params() to select the
frequency to move to. However, it is possible that all the channels are
already used, so the selection of a new frequency would fail, although
the frequency used by the P2P GO should not be considered as used if it
is the only one using it.
To overcome this, allow the frequency selection to continue even if all
the frequencies are in use, but the frequency used by the P2P GO is not
used by any station interface.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Use channel switch mechanism to move a P2P GO to a new channel,
when required. In order to be able to reconfigure the GO channel,
split wpa_supplicant_conf_ap() function, so the frequency
configuration part can be reused to find additional CSA settings.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
This is equivalent to the P2P_EVENT_INVITATION_RECEIVED signal on the
control interface. It can be used to sent the Invitation Received signal
to applications written using D-Bus.
Signed-off-by: Maneesh Jain <maneesh.jain@samsung.com>
The P2P group is not yet operating when going through GO Negotiation
exchange. Previously, an old cached scan result could be used to skip
the scan immediately after the GO Negotiation. While this is quite
unlikely to happen in practice, we can easily force a scan here now with
the generic scan_min_time mechanism. Do that to avoid any corner cases
that a previous instance of the group could have if found in cached scan
results.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The P2P group is not yet operating when going through invitation
exchange for re-invocation. Previously, an old cached scan result could
be used to skip the scan immediately after the invitation exchange.
While this may result in the fastest possible connection, it does have
some issues with cases where the GO takes some time to start up. It
would also be at least theoretically possible for some of the BSS
parameters to be different, so having a fresh scan result from the new
GO instance may be desired in any case.
Add a mechanism to skip scan results that have been last updated before
a specific point in time and as the first user for this mechanism,
require chan results to be more recent than the invitation message
exchange for the P2P Client role in persistent group re-invocation case.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
If P2PS PD concludes to use default P2PS method wpas_p2p_scan_res_join()
ignores this value and tries to perform a redundant legacy PD.
Fix this by considering WPS_P2PS method too.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
When using P2P invitation to re-invoke a persistent P2P group without
specifying the operating channel, query the driver for the preferred
frequency list, and use it to select the operating channel of the group.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
When starting an autonomous GO without specifying the operating channel,
query the driver for the preferred frequency list, and use it to select
the operating channel of the GO (if supported).
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
When P2PS PD with default P2PS method is done, the peer that becomes GO
should authorize the client. However, P2PS specification doesn't require
the client to include its intended interface address in PD
Request/Response. As a result, the P2P Client's interface address may not
be known and any address may need to be authorized.
Previously, client's P2P Device Address was used for authorization,
which is not correct when a dedicated interface is used for P2P Client.
This is not resulting in a connection failure, however it causes a
significant delay (until WPS_PIN_TIME_IGNORE_SEL_REG elapses). Fix this
by authorizing the intended interface address, if known; or any address,
if not known.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Use NULL to indicate if the address is not available instead of fixed
00:00:00:00:00:00. wpas_p2ps_prov_complete() already had code for
converting NULL to that all zeros address for event messages.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
A P2P GO channel switch should not be triggered in all cases that
require channel list update. Specifically, a P2P GO CS should not
be triggered in case that the P2P GO state changed or in case that
that the P2P GO has just completed a CS.
To fix this, add reason code to wpas_p2p_channel_list_update() and
trigger CS flow only for the relevant cases.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
A newly created GO might move to another channel before the client was
able to connect to it. This creates a situation where the client
searches the GO on the channel agreed upon during GO Negotiation or
invitation signaling, while the GO is on another channel. This in turn
might lead to delayed connection or connection failure and group
removal.
Fix this by disallowing a GO CS as long as there is some activity that
should delay the switch. If a GO move is not allowed, set a timeout to
re-attempt the move.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Re-factor the code, so channel optimizations would be also triggered
upon the following changes: channel updates from the kernel,
disallow_freq interface, etc.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Not all paths in wpas_p2p_init_go_params() verified that the candidate
frequency can be used for GO purposes. Fix this, and in addition
re-factor the code to put better emphasis on the frequency selection
priorities.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
A P2P GO interface that was instantiated after a GO Negotiation or
Invitation holds the intersection of frequencies between the GO and the
client. In case the GO is going to move to another frequency, allow it
to move only to a frequency that is also supported by the client.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Add a function to compute the group common frequencies, and
use it to update the group_common_frequencies as part of the
channel switch flows.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Upon any change in the currently used channels evaluate if a GO should
move to a different operating frequency, where the possible scenarios:
1. The frequency that the GO is currently using is no longer valid,
due to regulatory reasons, and thus the GO must be moved to some
other frequency.
2. Due to Multi Concurrent Channel (MCC) policy considerations, it would
be preferable, based on configuration settings, to prefer Same
Channel Mode (SCM) over concurrent operation in multiple channels.
The supported policies:
- prefer SCM: prefer moving the GO to a frequency used by some other
interface.
- prefer SCM if Peer supports: prefer moving the GO to a frequency
used by some other station interface iff the other station
interface is using a frequency that is common between the local and
the peer device (based on the GO Negotiation/Invitation signaling).
- Stay on the current frequency.
Currently, the GO transition to another frequency is handled by a
complete tear down and re-setup of the GO. Still need to add CSA flow to
the considerations.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Otherwise P2P remains in provisioning state and continues to skip
extended listening forever.
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
This variable is needed to figure out whether a wpa_supplicant interface
is for a P2P group that is (or was) connected to a specific GO. The
previous implementation was able to find such a case only when there was
an association with the GO. However, this may be needed even if there is
a temporary disconnection from the GO. Keep the GO device address
information over such temporary disconnections and only remove it on
group termination. This fixes an issue with D-Bus Peer PropertiesChanged
signals for the Groups property in case a P2P group gets removed due to
group idle timeout instead of explicit group termination command (local
request) or GO notification.
Signed-off-by: Jouni Malinen <j@w1.fi>
This adds a callback function that can be used from the P2P module to
request the current preferred list of operating channels from the
driver.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
If the driver supports the preferred frequency list extension, use this
information from the driver when no explicitly configured preference
list (p2p_pref_chan) is present for P2P operating channel selection.
This commit adds this for GO Negotiation and Invitation use cases.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Upon GO Negotiation completion, if the remote peer becomes GO, send a
hint event over QCA vendor specific interface to inform the driver of
the likely operating channel of the P2P GO.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Report the feature capability on P2PS-PROV-START and P2PS-PROV-DONE
ctrl-iface events. A feature capability value is specified as
'feature_cap=<hex>' event parameter, where <val> is a hexadecimal
string of feature capability bytes in a PD Response frame.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
If a device may be an explicit GO, it adds the GO details in the PD
Request. First, we try to reuse an active GO. If it is not present, we
try to reuse a non-active persistent group. In the latter case, if a
dedicated P2P interface is needed, the intended address should be that
of the pending interface. However, the wpas_get_go_info() provided the
ssid->bssid address, which is the address of the P2P device. This might
result in an incorrect intended interface attribute in the PD Request in
case a separate group interface is used.
Fix this by setting group_iface variable to true only if a dedicated
interface should be used and set the attribute accordingly.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Validate the PD Response frame contents more thoroughly when it is used
for P2PS.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
When persistent group is used and the peer is GO in this group,
intended interface attribute should be added to PD request/response.
Not doing so violates the spec.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
If after P2PS PD the device should become a GO it sends P2PS-PROV-DONE
event which contains the GO interface name. If the GO isn't running yet
the device may use pending interface name. However, when the GO is
started, pending interface name will be removed.
Fix the GO interface name in P2PS-PROV-DONE event by copying the
interface name instead of saving the pointer.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Call wpas_p2p_create_iface() instead of just checking p2p_no_group_iface
config value. Not doing so, resulted in an incorrect behavior when the
driver sets WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE flag.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
In case of a network interface removal, check if the interface
was also the parent interface of the P2P Device dedicated interface.
If this is the case, then stop the P2P Device functionality, and
remove the P2P Device dedicated interface.
In case that the interface is added again and P2P Device
functionality can be enabled again, add a new P2P Device dedicated
interface and allow further P2P Device functionality.
In case that the P2P Device dedicated interface is re-created, the
original P2P Device configuration file is needed, so store it in
the global params (instead in the wpa_interface configuration).
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
wpas_p2p_get_ht40_mode() used blacklist approach (bw != BW20) to find
the relevant op_class, but didn't take into account other non-BW40
cases, like BW80, that had been added to the bw enum after the initial
implementation. Fix this by looking for the specific BW40 bw cases.
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Previously the wpa_s->parent interface was used, which is not
necessarily the P2P Device management interface.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
It was possible for a P2P group formation failure to result in a
concurrent station mode operation getting disconnected in the specific
error case where group interface addition fails after a successful GO
Negotiation. Fix this by skipping the wpas_p2p_group_delete() call in
this specific case since the group interface does not exists anymore at
the point wpas_group_formation_completed() gets called.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
If the RX frequency of the Probe Request frame is known, specify it when
sending the Probe Response frame. This is needed when the Probe Request
frame is received on another virtual interface, for example, when a GO
or P2PS client are discoverable on the group operating channel.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
1. Add global p2p_cli_probe property to enable/disable Probe Request
frame RX reporting for connected P2P Clients. The property can be set to
0 - disable or 1 - enable. The default value is 0.
2. Enable Probe Request frame RX reporting for P2P Client on
WPA_COMPLETED state if p2p_cli_probe property is set to 1. Disable it
when an interface state is changing to any other state.
3. Don't cancel Probe Request frame RX reporting on wpa_stop_listen for
a connected P2P Client handling Probe Request frames.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
In some cases, Probe Request frames can be received by a peer not only
on a listen channel. In this case an additional rx_freq parameter
explitly contains a Probe Request frame RX frequency. In case rx_freq is
set to 0, a Probe Request frame RX channel is assumed to be our own
listen channel (p2p->cfg->channel).
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
It is possible for P2P_CONNECT-join command to be issued on a GO's P2P
Interface Address before the P2P peer entry is available to map this
into the GO's P2P Device Address. This could result in the join
operation failing to continue after receiving PD Response due to the
address mismatch (source address = P2P Device Address while only the P2P
Interface Address is known). Fix this by updating the pending join P2P
Device Address based on the BSS entry, if needed.
Signed-off-by: Jouni Malinen <j@w1.fi>
Add operating class 125 (channels 149..169) to the list of P2P supported
channels. This allows the 5 GHz channels 161 and 169 to be used for P2P
GO when those channels are allowed for AP mode in the current regulatory
domain.
Signed-off-by: Amr BEN ABDESSALEM <amrx.ben.abdessalem@intel.com>
Add GO Intent information of connecting device in GO Negotiation Request
event which will help applications to decide its own GO intent value in
advance and can avoid failure cases when both devices use GO Intent 15
depending on application requirement.
Signed-off-by: Mayank Haarit <mayank.h@samsung.com>
A new Invitation Request might be received on a just started persistent
group if the previous Invitation Response sent isn't received at the
peer (GO of the persistent group). When the peer sends an Invitation
Request again, treat it as start of group formation and restart the
group formation timer at this point of time.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
D-Bus used the p2p_dev member in struct wpa_supplicant to track the
interface used for P2P Device operations. However, this is not needed as
the interface used for P2P Device operations is stored in struct
wpa_global->p2p_init_wpa_s.
Replace all the redirections to wpa_s->p2p_dev with redirections to
wpa_s->global->p2p_init_wpa_s and removed this member as it is no
longer needed.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
The function used wpa_s->parent->conf to iterate the P2P networks and
update the configuration file. However, wpa_s->parent is not
necessarily the interface used to manage the P2P Device operations.
Fix this by accessing the configuration file of the interface
initialized to manage the P2P Device operations.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
The function used wpa_s->parent->conf to iterate the P2P networks and
update the configuration file. However, wpa_s->parent is not
necessarily the interface used to manage the P2P Device operations.
Fix this by accessing the configuration file of the interface initialized
to managed the P2P Device operations.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
wpas_p2p_set_own_freq_preference() accessed wpa_s->parent->conf to test
if p2p_ignore_shared_freq is set, but wpa_s->parent is not necessarily
the interface used to manage the P2P Device operations.
Fix this by accessing the configuration file of the interface
initialized to manage the P2P Device operations.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
As wpas_p2p_remove_client() is not necessarily called from the interface
used to manage the P2P Device operations, when removing a client, use
the P2P management interface to iterate over the saved networks and
remove the relevant entries form the P2P GO network blocks.
Signed-off-by: Ben Rosenfeld <ben.rosenfeld@intel.com>
Commit 1c2aa04c96 ('P2P: Do not add P2P
IEs on P2P disabled interface') removed the P2P IEs from association on
non-P2P interface. However, an AP functioning as a P2P manager needs the
cross connection capability of the station (P2P Device). This needs to
be done to meet the P2P specification requirements even if the station
interface has p2p_disabled=1 in case P2P in general is enabled.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
It was possible for an nl80211-based driver to be determined to support
P2P even when the radio supports only the 5 GHz band. This resulted in
P2P initialization failing due to not being able to pick a social
channel and wpa_supplicant not starting. Fix this by not enabling P2P,
but still allowing wpa_supplicant initialization to complete.
Signed-off-by: Jouni Malinen <j@w1.fi>
By analysing objdump output some read only structures were found in
.data section. To help compiler further optimize code declare these
as const.
Signed-off-by: Mikael Kanstrup <mikael.kanstrup@sonymobile.com>
When starting a P2P client to re-join a persistent group
(P2P_GROUP_ADD persistent=<id>), it is possible that the P2P GO was
already found in previous scans. Try to get the P2P GO operating
frequency from the scan results list so wpa_supplicant will initially
scan only the P2P GO known operating frequency.
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
wpa_supplicant/p2p_supplicant.c has reached almost 10000 lines in length
and was getting a bit inconvenient to edit, so start splitting it into
separate files.
Signed-off-by: Jouni Malinen <j@w1.fi>
Add P2P changes to allow bringing up P2P autonomous GO on a DFS channel
if DFS functionality is offloaded to the driver.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
When there is no channel preference mentioned by user, auto GO
can be started on any of the 5 GHz channels supported for P2P.
Consider operating classes 115 and 124 which do not require DFS.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
wpa_supplicant_deinit_iface() ends up removing all P2P groups if the
removed interface is the parent interface. This is correct behavior in
general, but this resulted in issues in the new group interface
initialization error path since wpa_s->parent was not assigned before
hitting this check. Fix this by assigning wpa_s->parent as part of
wpa_supplicant_add_iface().
Signed-off-by: Jouni Malinen <j@w1.fi>
The optional freq=<MHz> can now be used with the P2P_FIND command to
specify a single channel to scan during the first round of P2P search.
For example, this can be used to replace the full initial scan with a
single channel scan of a known operation channel.
Signed-off-by: Daichi Ueura <daichi.ueura@sonymobile.com>
This reverts commit 3df2f4fe99 ('P2P:
Remove unused P2P_SCAN_SPECIFIC') with a modification to fit the current
code base.
Signed-off-by: Daichi Ueura <daichi.ueura@sonymobile.com>
Read p2p_go_ctwindow (0-127 TUs) from the config file, and pass it to
the driver on GO start.
Use p2p_go_ctwindow=0 (no CTWindow) by default.
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
If a separate P2P group interface was used, P2P_CONNECT-auto fallback to
GO Negotiation could result in use of freed memory and segmentation
fault. This happened in cases where the peer GO was found in some old
scans, but not in the first scan triggered by the P2P_CONNECT-auto
command ("P2P: Peer was found running GO in older scan -> try to join
the group" shows up in the debug log). In addition, the GO would still
need to reply to PD Request to allow this code path to be triggered.
When five scans for the GO were completed in this sequence, the P2P
group interface was removed as part of falling back to GO Negotiation.
However, that ended up dereferencing the freed wpa_s instance at the end
of scan event processing. Fix this by reordering code a bit and breaking
out from EVENT_SCAN_RESULTS processing if the interface could have been
removed.
Signed-off-by: Jouni Malinen <j@w1.fi>
Do not claim to change the Listen channel in a debug message when
previously configured channel prevents this. In addition, fix a typo in
another related debug print.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
The pending interface created during provision discovery should
not be removed on stopping p2p_find. This pending interface has
to be used after completing GO negotiation. Earlier the pending
interface is created just before GO negotiation so there was no
problem.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
If P2PS config method is used for provisioning, upon forming a new GO,
start WPS registrar for the provisioned peer automatically.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This introduces a P2P module callback function that will be used to
create the pending P2PS group after sending PD Response and receiving
ACK status for it.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
When the peer device is trying to form a new group despite having
old persistent group with same roles, remove the stale persistent
group.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This extends wpas_p2p_prov_disc() implementation to accept P2PS
parameters. None of the callers are yet using this functionality; the
following commit introduces a user.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This adds a data structure for storing P2PS PD information and code to
add the related attributes into PD Request. The actual operation to
trigger this behavior will be added in a separate commit.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Add support to parse received GAS requests for ASP services and
prepare GAS responses accordingly.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This extends the P2P_SERV_DISC_REQ control interface command with a new
"asp" service type. This takes service id, service string, and optional
service info as arguments.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
In addition, add a new P2P_SERVICE_REP command that can be used to
replace existing ASP advertisements.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This provides additional WPS definitions and rules for negotiating use
of P2PS default PIN configuration method.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
P2PS seek strings can now be specified in the P2P_FIND control interface
command with one or more optional "seek=<str>" parameters.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
It was possible for the previously requested remain-on-channel for P2P
listen state to get canceled before having received driver event
indicating start of that remain-on-channel operation. In such a case,
the event was able to trigger P2P module to start processing listen
timeout even though there was not supposed to be a following listen
operation anymore. Skip the driver event if we are not waiting for a new
listen state.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This new wpa_supplicant configuration parameter can be used to force
passive scanning to be used for most scanning cases at the cost of
increased latency and less reliably scans. This may be of use for both
testing purposes and somewhat increased privacy due to no Probe Request
frames with fixed MAC address being sent out.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Stop any ongoing P2P listen/find flow before starting invitation flow.
This was partially handled in p2p_invite() that called p2p_find(), but
this did not cleanly handle cases such as long_listen.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Use interface's own NFC configuration instead of parent's one
to support a P2P device dedicated interface.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
In many applications it is useful not just to enumerate a group of well
known access points, but to use a address/mask notation to match an
entire set of addresses (ca:ff:ee:00:00:00/ff:ff:ff:00:00:00).
This change expands the data structures used by MAC lists to include a
mask indicating the significant (non-masked) portions of an address and
extends the list parser to recognize mask suffixes.
Signed-off-by: Stefan Tomanek <stefan.tomanek@wertarbyte.de>
On receiving the cancel remain on channel event, the pending_tx
is scheduled immediately and returned. This was preventing
the wpas_p2p_listen_start function from execution thereby resulting
in termination of the long listen operation.
Signed-off-by: Jithu Jance <jithu@broadcom.com>
Previously, any P2P capable interface was skipped in cross connection
uplink consideration. However, this ends up skipping more or less all
nl80211-based driver cases now since they mark the main interface P2P
capable. Relax this rule to allow the parent interface to be used as the
non-P2P station interface for cross connection purposes.
Signed-off-by: Jouni Malinen <j@w1.fi>
While these are using practically large enoungh buffer sizes, it is
better to be more consistent with checking os_snprintf() return value.
Signed-off-by: Jouni Malinen <j@w1.fi>
If p2p_stop_find is issued after the p2p_scan request is triggered to
the host driver, the obtained scan results are also considered to update
the P2P peer entries. This is not always desired behavior, i.e., it can
be clearer if no P2P-DEVICE-FOUND events are generated based of that
final pending scan.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
With the radio work interface, the actual request to start p2p_scan
operation is scheduled from a radio work and hence the initial return
value cannot provide the real result of the driver operation to trigger
a scan. Introduce a new notification API to indicate the scan trigger
status based on which the p2p_scan_running instance can be set using the
real return value from the driver operation.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
In theory, wpas_p2p_disconnect_safely() could have dereferenced the
wpa_s == NULL argument, but in practice, it won't due to the
calling_wpa_s == wpa_s check and wpas_p2p_disconnect() accepting NULL.
Anyway, it is cleaner to add an explicit check for this. (CID 74492)
Signed-off-by: Jouni Malinen <j@w1.fi>
This will be useful to hand-off P2P commands from the parent interface
to its dedicated P2P device if that one is present, in DBus interface.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Save the group common frequencies when starting a GO due to
an invitation signaling requesting to re-invoke a persistent GO.
To do so, move the code that handles the translation of p2p_channels to
frequency list into a public function so it can be re-used both when GO
Negotiation is done and invitation signaling is done.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Once a P2P GO interface is configured, save the group common
frequencies, as this can be useful later for channel selection
considerations during channel switch, etc.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Use the 'no_ir' notation instead of the 'passive scan' and
'no_ibss' notations to match the earlier change in nl80211.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
The extra_roc_dur parameter can now be used in CONFIG_TESTING_OPTIONS=y
builds to simulate driver behavior where the ROC duration gets increased
without user space request.
Signed-off-by: Jouni Malinen <j@w1.fi>
When GC receives invitation response and tries to re-establish
connection to a persistent group channels from passive list should
be allowed. A missing check for operation mode triggered reselection
of operating channel from active channels only to happen and thus fail
the connect attempt.
Add a check for operation mode and if GC instead use negotiated
frequency (i.e. GO operating channel from invitation response).
Signed-off-by: Mikael Kanstrup <mikael.kanstrup@sonymobile.com>
Commit 1595eb93ae ('P2P: Add support for
60 GHz social channel') had an unintended change to how P2P search scans
2.4 GHz social channels. Use of p2p_supported_freq() to filter the list
of social channels ended up using the disallow_freq setting to remove
social channels from the P2P search scans. This is not desired since
peers need to be found on any of the social channels even if those
channels have been disabled from P2P operating channel use. Restore the
previous behavior by included all the 2.4 GHz social channels in P2P
search scans if the driver indicated support for the 2.4 GHz band.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This is needed to allow dynamic removal of an interface that adds the
P2P Device interface without leaving behind the management interface
with invalid wpa_s->parent pointer.
Signed-off-by: Jouni Malinen <j@w1.fi>
It was possible to issue the P2P_GROUP_REMOVE command through the
per-interface control interface. This resulted in freed memory getting
accessed when trying to send the control interface response to the
operation that ended up deleting the group interface. Fix this by
postponing the removal operation until the caller has returned.
Signed-off-by: Jouni Malinen <j@w1.fi>
Commit 152cff6ba6 ('P2P: Remove
WPA_DRIVER_FLAGS_P2P_MGMT option') removed the only non-zero return from
wpas_p2p_stop_find_oper(), but did not remove the useless return value
or the return check in wpas_p2p_stop_find(). Clean these up by removing
unreachable code and useless return value.
Signed-off-by: Eduardo Abinader <eduardo.abinader@openbossa.org>
This information can be used to determine whether the event is generated
for a new peer that was added or due to an update in the information for
an existing peer.
Signed-off-by: Jouni Malinen <j@w1.fi>
len + pos > end comparison here did verify that the length field had a
valid value, but that did not seem to enough to avoid TAINTED_SCALAR
warning. Re-order that validation step to be equivalent "len > end -
pos" to remove these false positives (CID 68116).
Signed-off-by: Jouni Malinen <j@w1.fi>
A P2P Client may be able to connect to the GO even if the WPS
provisioning step has not terminated cleanly (e.g., P2P Client does not
send WSC_Done). Such group formation attempt missed the event
notification about started group on the GO and also did not set the
internal state corresponding to the successful group formation.
This commit addresses the missing part by completing GO side group
formation on a successful first data connection if WPS does not complete
cleanly. Also, this commit reorders the STA authorization indications to
ensure that the group formation success notification is given prior to
the first STA connection to handle such scenarios.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Previously, this variable did not necessarily get cleared between group
formations and could result in some of the workaround operations from
not being executed after the first group formation when using the same
interface for all P2P groups. Fix this by clearing the variable whenever
starting the GO to make sure it is used consistently for each group
formation.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
It was possible for group formation timeout to be the trigger for
detecting the second PSK/4-way handshake failure. If that happened, the
special reason=PSK_FAILURE was not used in the P2P-GROUP-REMOVED event
even though P2P-PERSISTENT-PSK-FAIL did get reported. Fix this special
case by replacing the reason code with PSK_FAILURE if the PSK failure
timeout gets registed as part of the disconnection processing in the
formation timeout handler.
Signed-off-by: Jouni Malinen <j@w1.fi>
Previously, the case of non-netdev P2P management device ended up
pulling in both the main interface (e.g., wlan0) and P2P Device
interface (from command line -m argument) as configuration. Similarly,
the main interface ended up included both configuration files. This is
not really helpful for various use cases, e.g., when permanent P2P group
information is stored in the P2P Devince interface, but it gets
duplicated in the main station interface configuration.
Clean this up by changing the -m<file> argument to replace, not
concatenate, configuration information. In other words, the main station
interface will not read this configuration and the P2P Device interface
(non-netdev) does not read parameters from the station interface
configuration file.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Support 60 GHz band in P2P module by selecting random social channel
from all supported social channels in 2.4 GHz and 60 GHz bands.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This check is already being done on wpas_p2p_deinit_iface.
Of course, it is assumed wpa_s is not deinit when reaches
that point as a matter of fact.
Signed-off-by: Eduardo Abinader <eduardo.abinader@openbossa.org>
As P2P service are not necessarily attached to a iface, when
added, proceed with same approach on p2p global deinit. Such
approach solves memory leaks ocurring upon wpa_supplicant
termination, when p2p services were registered previously.
Signed-off-by: Eduardo Abinader <eduardo.abinader@openbossa.org>
In theory, this call could fail, so check the return value before using
the received data. These specific cases would not really care much about
the failures, but this keeps the code more consistent and keeps static
analyzer warnings more useful. (CID 72678, CID 72679, CID 72680,
CID 72683, CID 72689, CID 72698, CID 72703)
Signed-off-by: Jouni Malinen <j@w1.fi>
Currently to signal PropertiesChanged upon group client
removal (group property), wpa_supplicant dbus uses wpa_s
members like go_dev_addr and current_ssid, for instance.
Thus, deferring p2p client deauth to after dbus notify,
but keeping the same order as before, solves the issue,
as wpa_s is not yet completely deinitialized.
Signed-off-by: Eduardo Abinader <eduardo.abinader@openbossa.org>
While building Association Request frame IEs we should consider adding
P2P IEs only on interface where P2P functionality is enabled. Consider
per interface p2p_disabled parameter before adding P2P IEs to complete
the checks for this.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Previously, the P2P Interface Address of the peer gets updated in the
peer table every time based on the scan results.
For example, in a two port concurrency scenario, where the peer device
has two interfaces with unique P2P Interface Addresses and with same P2P
Device Address, based on the Probe Response/Beacon frames from these two
interfaces, their peer table gets updated, but each of these updates
happens in the peer table only based on the P2P Device Address. So, the
same peer's P2P Interface address is updated every time and hence, at
any instant, only one P2P Device Address to P2P Interface Address
mapping entry exist in the peer table for the peer which has two
interfaces.
When we try to join a group operated by the peer, lookup happens in the
peer table and when an interface entry is not available, the pending
interface address gets overwritten with the P2P Device Address and hence
the P2P connection can fail. Since the BSS table is the one that is
up-to-date, this fix will ensure that the interface overwriting will
happen only when there is no BSS entry for the pending P2P Interface
Address as well.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
In order to find a GO interface, there has to be a
comparison among two SSIDs, instead of a wpa_ssid and
a ssid.
Signed-off-by: Eduardo Abinader <eduardo.abinader@openbossa.org>
When p2p_cancel is invoked while the GO Negotiation Action TX was
pending, the p2p_send_action_work was not getting cleared.
Signed-off-by: Jithu Jance <jithu@broadcom.com>
The PSK/passphrase are needed for the control interface events since the
upper layer UI component is required by the specification to be able to
make this available for manual configuration. However, this is not
needed in the INFO verbosity level debug entry, so split the event
generation into two parts.
Signed-off-by: Jouni Malinen <j@w1.fi>
This makes it easier to change the event message message for indication
when P2P group has stated and removes some duplicated code.
Signed-off-by: Jouni Malinen <j@w1.fi>
This allows external programs to use vendor specific information from
P2P peers without wpa_supplicant having to be able to parse and
understand all such vendor specific elements.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This would not really be needed since these functions check the pointer
above. However, this seems to be too difficult for some static analyzer,
so add the extra check to avoid false reports.
Signed-off-by: Jouni Malinen <j@w1.fi>
This will be useful for a peer to know if it is part of a group either
as a client of our local GO or as the peer GO.
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Previously, eight character random passphrase was generated
automatically for P2P GO. The new p2p_passphrase_len parameter can be
used to increase this length to generate a stronger passphrase for cases
where practicality of manual configuration of legacy devices is not a
concern.
Signed-off-by: Jouni Malinen <j@w1.fi>
This removes number of unnecessary #ifdef CONFIG_P2P blocks from generic
code by hiding the conditional build into p2p_supplicant.h with empty
inline functions.
Signed-off-by: Jouni Malinen <j@w1.fi>
Performing a P2P Device flow such as p2p_listen or
p2p_find, can degrade the performance of an active interface
connection, if the listen frequency is different than the
frequency used by that interface.
To reduce the effect of P2P Device flows on other interfaces,
try changing the listen channel of the P2P Device to match the
operating channel of one of the other active interfaces. This change
will be possible only in case that the listen channel is not forced
externally, and will be delayed to a point where the P2P Device
state machine is idle.
The optimization can be configured in the configuration file and
is disabled by default.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
In case there is no preference for the GO operating channel,
try using one of 1, 6, 11 (randomly), and only if the random
selection is not suitable traverse all the channels 1..11.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
When the number of frequencies supported by the kernel is bigger than
one, and there is a need to pick a frequency for a new flow such as P2P
GO Negotiation or P2P Invitation, the flow should be able to pick the
best frequency among all the frequencies currently used by the device.
In order to prioritize between the currently used frequencies, add
the ability to collect additional data about each used frequency
(if the frequency is used by a station interface or P2P Client)
and when needed select the best frequency, where:
1. Infrastructure interfaces have highest priority
2. P2P Client interfaces have higher priority over AP/GO
interfaces.
The rational is that the frequency of an AP/GO can change while
that of a station interface cannot.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
This makes the p2p_find default delay value configurable as
p2p_search_delay parameter through the configuration file (and through
control interface "SET p2p_search_delay <value>" on the P2P management
interface.
This parameter controls the number milliseconds of extra delay that is
added between search iterations when there is a concurrent operation in
progress. This can be used, e.g., p2p_search_delay=100 to make p2p_find
friendlier to concurrent operations by avoiding it from taking 100% of
the radio resources. The default value is the previous default, i.e.,
500 ms. Smaller values can be used to find peers more quickly at the
cost of larger effect to concurrent operations while a larger value
leaves more time for the concurrent operations at the cost of making
device discovery take longer time.
The optional p2p_find delay argument can still be used to override the
search delay for each search operation.
Since the P2P_CONCURRENT_SEARCH_DELAY macro is not used anymore, the
driver specific build parameter for bcmdhd from Android.mk is also
removed. Similar configuration can now be achieved with
p2p_search_delay=0 in the p2p0 interface configuration file.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This makes the operations more consistent when going through multiple
persistent group re-invocation sequences in a row. Each invitation needs
to be accepted separately if persistent reconnect is not enabled.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
It looks like there was a possible sequence for wpa_s->scan_req to be
MANUAL_SCAN_REQ at the moment a GO is to be started. This could result
in the "Request scan (that will be skipped) to start GO" to actually not
skip the scan and end up stuck waiting for something external to trigger
a scan before the GO could be started. Fix this by clearing
wpa_s->scan_req when deciding to start the GO.
This issue could be hit at least by first enabling autoscan and then
issuing P2P_GROUP_ADD. Other sequences that set wpa_s->scan_req to
MANUAL_SCAN_REQ without going through wpa_supplicant_scan() to clear it
immediately could also have similar effect (and there is even a small
window for the wpa_supplicant_scan() call to happen only after the
P2P_GROUP_ADD command is processed, so this could potentially have
happened even with SCAN + P2P_GROUP_ADD).
Signed-off-by: Jouni Malinen <j@w1.fi>
