P2P Group ID can optionally be included in the connection handover
messages when acting as a P2P Client in a group. Add this information
and show it in the P2P-NFC-PEER-CLIENT event message.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
When the NFC connection handover message received from a peer indicates
that the peer is operating as a GO on a specific channel, use that
information to avoid having to go through full scan. In addition, skip
the separate join-a-group scan since we already know the operating
channel, GO P2P Device Address, and SSID.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The DH public and private key needs to be copied for the separate group
interface if that is used for a P2P group.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Instead of automatically triggering a connection, provide an indication
of one of the devices being a P2P client to upper layers to allow user
to determine what to do next.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Send a P2P-NFC-BOTH-GO event to upper layers to determine what to
do in case both devices going through NFC connection handover are
already operating as a GO.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This new mechanism allows P2P Client to request an IPv4 address from the
GO as part of the 4-way handshake to avoid use of DHCP exchange after
4-way handshake. If the new mechanism is used, the assigned IP address
is shown in the P2P-GROUP-STARTED event on the client side with
following new parameters: ip_addr, ip_mask, go_ip_addr. The assigned IP
address is included in the AP-STA-CONNECTED event on the GO side as a
new ip_addr parameter. The IP address is valid for the duration of the
association.
The IP address pool for this new mechanism is configured as global
wpa_supplicant configuration file parameters ip_addr_go, ip_addr_mask,
ip_addr_star, ip_addr_end. For example:
ip_addr_go=192.168.42.1
ip_addr_mask=255.255.255.0
ip_addr_start=192.168.42.2
ip_addr_end=192.168.42.100
DHCP mechanism is expected to be enabled at the same time to support P2P
Devices that do not use the new mechanism. The easiest way of managing
the IP addresses is by splitting the IP address range into two parts and
assign a separate range for wpa_supplicant and DHCP server.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The device with the NFC Tag can be configured to enable NFC to be used
with "P2P_SET nfc_tag 1" and "P2P_LISTEN" commands to allow static
handover to be used.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
WPS_NFC_TAG_READ can be used to report static connection handover where
the connection handover select message was read from an NFC tag.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
"NFC_REPORT_HANDOVER {INIT,RESP} P2P <req> <sel>" can now be used to
report completed NFC negotiated connection handover in which the P2P
alternative carrier was selected.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
"NFC_GET_HANDOVER_{REQ,SEL} NDEF P2P-CR" can now be used to build P2P
alternative carrier record for NFC connection handover request/select
messages.
Static connection handover case can be enabled by configuring the DH
parameters (either with wps_nfc_* configuration parameters or with
WPS_NFC_TOKEN command at run time. The NFC Tag contents can be generated
with "NFC_GET_HANDOVER_SEL NDEF P2P-CR-TAG" after having configured
Listen channel (p2p_listen_reg_class/p2p_listen_channel).
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
GO Negotiation needs to know which OOB Device Password ID is assigned
for the peer when NFC is used as the trigger.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Provide local GO channel to the P2P module so that it can be used in
messages that indicate the current operating channel.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This adds a QCA vendor specific nl80211 event to allow the driver to
indicate a list of frequency ranges that should be avoided due to
interference or possible known co-existance constraints. Such
frequencies are marked as not allowed for P2P use to force groups to be
formed on different channels.
If a P2P GO is operating on a channel that the driver recommended not to
use, a notification about this is sent on the control interface and
upper layer code may decide to tear down the group and optionally
restart it on another channel. As a TODO item, this could also be changed
to use CSA to avoid removing the group.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
A P2P Device while in the Listen state waiting to respond for the
obtained group negotiation request shall give a fair chance for other
concurrent sessions to use the shared radio by inducing an idle time
between the successive listen states. However, if there are no
concurrent operations, this idle time can be reduced.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Use P2P GO's operating channel information, if known, to do a single
channel scan during the join operation.
Signed-hostap: Jithu Jance <jithu@broadcom.com>
If we already know the SSID of the P2P group we are trying to join, use
that SSID to limit scan responses and BSS selection since we do not
really look for any other network in this case. In addition, this can
fix cases where the peer has just changed its SSID (e.g., started a new
group) and there may be multiple BSS entries for the same BSSID.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
There is no need to wait for the 15 second group formation timeout to
clear the state if WPS failure is detected during P2P group formation.
Allow the WPS exchange steps (WSC_NACK and EAP-Failure) to be completed
and remove the group to get rid of the extra wait.
Signed-hostap: Jouni Malinen <j@w1.fi>
Avoid concurrent P2P Listen operations with any other exclusive use of
the radio by using the radio work queuing mechanism. This removes some
of the earlier workarounds that postponed scans depending on other
operations.
Signed-hostap: Jouni Malinen <j@w1.fi>
Avoid concurrent P2P scan requests with any other exclusive use of the
radio by using the radio work queuing mechanism. This removes some of
the earlier workarounds that postponed scans depending on other
operations.
Signed-hostap: Jouni Malinen <j@w1.fi>
The P2P_PRESENCE_REQ command did not give any easily available
indication of the response received from the GO. Make this more useful
by providing such response (if received) as a ctrl_iface monitor event
(P2P-PRESENCE-RESPONSE).
Signed-hostap: Jouni Malinen <j@w1.fi>
The option of handling upper layer P2P management operations within the
driver/firmware was originally planned to be used with wpa_supplicant,
but this has not really happened and there is no clear sign of this
being needed in the near term either. This functionality has not been
completed and it is certainly not being kept up-to-date or tested. As
such, it is best to remove it for now and if this or something similar
is needed in the future, it can be brought back once a clear need for it
has been demonstrated first.
Signed-hostap: Jouni Malinen <j@w1.fi>
GO activation can fail if the first client doesn't connect
within a certain time, but this should not be dependent on
wall time -- use monotonic time instead.
While at it, use os_reltime_expired().
Signed-hostap: Johannes Berg <johannes.berg@intel.com>
The BSS table, scan timeout, and related functionality should use
monotonic time since they care about relative values (age) only.
Unfortunately, these are all connected, so the patch can't be split
further. Another problem with this is that it changes the driver wrapper
API. Though, it seems only the test driver is using this.
Signed-hostap: Johannes Berg <johannes.berg@intel.com>
Based on priority, remove the connection with least priority whenever
a frequency conflict is detected.
Signed-hostap: Jithu Jance <jithu@broadcom.com>
This field allows adds enough information into the P2P-DEVICE-FOUND
events to figure out if the peer supports Wi-Fi Display.
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
The shorter 250 ms wait for the next scan request can be used also for
the case of persistent group re-invocation instead of just formation of
a new group. This speeds up the process and makes this more robust
especially in cases where the GO is using MCC.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Only force_freq was used in the wpas_p2p_set_own_freq_preference() call
which allowed the P2P module channel re-selection to ignore the
preference for using a channel we are already using. Fix this by setting
either force_freq or pref_freq as the preference based on which one is
set. This allows p2p_ignore_shared_freq parameter to be used whether to
prefer the shared frequency in this case.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
There is no need to use wpas_p2p_num_unused_channels() here in the
default configuration of p2p_ignore_sahred_freq=0, so re-order the
conditions to skip that operation. This is a bit more efficient and the
debug log is also a bit cleaner in the default case.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
p2p_ignore_shared_freq=1 was supposed to allow a MCC-capable device to
ignore a preference for using the same channel on multiple interfaces.
However, it was not used when inviting a peer to re-invoke a persistent
group. This case needs special handling since the peer's channel list is
not available to perform channel reselection and the operating channel
indicated in the Invitation Request frames ends up getting used as the
operating channel if the transmitted of that frames becomes the GO.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
p2p_ignore_shared_freq=1 was supposed to allow a MCC-capable device to
ignore a preference for using the same channel on multiple interfaces.
However, it was not used during processing of an Invitation Request. Fix
that case to use channel preference instead of channel forcing if free
channels are available. This allows p2p_ignore_shared_freq=1 case to
ignore the preference.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
It is confusing to talk about current operating channels being
unavailable for P2P when there are no current operating channels. Make
the debug message easier to understand.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
It is clearer if there is only a single loop of the channel list and
shared debug prints. In addition, the note about current operating
channels not being available is quite confusing if there are no
operating group, so make that part of the message conditional.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Commit 0d08efa447 modified
wpas_p2p_setup_freqs() design to use number of MCC channels capability
from the driver. However, it resulted in regression on how the preferred
vs. forced channel selection is done in the case of a MCC device.
force_freq was set unconditionally even though this was supposed to be
done only if no additional channels are available. pref_freq needs to be
used when possible to avoid preventing connection.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
During persistent group re-invocation, GO may end up using a different
channel as the operation channel compared to what was indicated in the
invitation frames. This may break the connection if the peer device ends
up scanning the GO only on the channel from the invitation frame. Fix
this by using the negotiated channel (if available) on the GO as the
operating channel instead of the channel that was provided in the
p2p_invite command to start negotiation.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This prints out get_shared_radio_freqs() results and related information
from P2P operations to make debug logs more helpful for figuring out
issues related to multi-channel concurrency.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
When trying to choose a frequency that can be used for GO instantiation,
properly check if there are free channels that can be used.
Signed-hostap: Ilan Peer <ilan.peer@intel.com>
It was possible for the wpa_s->show_group_started and wpa_s->go_params
to be left set when a P2P group was removed before group formation had
completed. In case a separate P2P group interface was not used, this
could rsult in all future scans using the hardcoded DIRECT-* SSID and as
such, not find the network they were trying to find. Fix this by
clearing these P2P parameters on group removal.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Start GO with VHT support if VHT option was requested
and the appropriate channels are available.
Signed-hostap: Eliad Peller <eliadx.peller@intel.com>
Add the option to ask for VHT operation similarly to the way ht40 is
configured - either by adding 'vht' param to the relevant p2p_*
commands or by configuring p2p_go_vht=1 in the configuration file.
This patch only adds the configuration option (e.g., via control
interface). The actual handling of the VHT parameter (asking the driver
to use VHT, etc.) will be done by the following patch.
Signed-hostap: Eliad Peller <eliadx.peller@intel.com>
The new p2p_add_cli_chan=1 configuration parameter can be used to
request passive-scan channels to be included in P2P channel lists for
cases where the local end may become the P2P client in a group. This
allows more options for the peer to use channels, e.g., if the local
device is not aware of its current location and has marked most channels
to require passive scanning.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The new p2p_no_go_freq frequency range list (comma-separated list of
min-max frequency ranges in MHz) can now be used to configure channels
on which the local device is not allowed to operate as a GO, but on
which that device can be a P2P Client. These channels are left in the
P2P Channel List in GO Negotiation to allow the peer device to select
one of the channels for the cases where the peer becomes the GO. The
local end will remove these channels from consideration if it becomes
the GO.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Commit 2e5ba4b6d1 moved this to a function
and updated one of the os_snprintf() calls to use the len parameter, but
forgot the other one.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
When a GO or P2P Client invites a peer device to join an already
operating group, the Operating Channel in Invitation Request needs to be
forced to the current operating channel of the group.
Signed-hostap: Jouni Malinen <j@w1.fi>
This makes it easier to debug issues related to selecting GO information
from the latest updated BSS table entry.
Signed-hostap: Jouni Malinen <j@w1.fi>
P2P IE may be available from a Beacon frame from a GO even if we have
not yet received a Probe Response frame with P2P IE from that GO. Since
all the needed information for determining the GO's P2P Device Address
and group capabilities are available, use that information instead of
displaying incomplete group information.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This fixes some P2P-join-a-group cases where GO may have been discovered
based on passive scan or non-P2P scan. P2P IEs may have been received
from a Beacon frame in such a case and that information can be used to
create a P2P peer entry, e.g., to allow provision discovery exchange to
be completed.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
If a group was removed before the wait for the first client had timed
out and the client had not yet connected, p2p_go_wait_client could have
been left set and with that, scan operations could be unnecessarily
delayed. This fixes some undesired delays from commit
c1c0b35fea.
Signed-hostap: Jouni Malinen <j@w1.fi>
Commit 41f853235f extends group formation
timeout for the first data connection to complete and resets
p2p_go_group_formation_completed flag due to which p2p_in_provisioning
and p2p_group_formation flags are not cleared when
wpas_group_formation_completed() is called. This can result in both
station scan and p2p_find failures in the case where separate P2P group
interface is not used and the client does not complete 4-way handshake.
Fix this by clearing p2p_group_formation and p2p_in_provisioning when
such a P2P group is deleted.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Update the p2p_go_wait_client timestamp in p2p_go_configured() to
address the case where the group is set up without the provisioning
step.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Previously, GO considered the group to be fully re-invoked after
starting beaconing on successful invitation exchange. This would leave
the group running until idle timeout (which may not be enabled) or
explicit removal if the client fails to connect for any reason. Since
the client is expected to connect immediately after the invitation
exchange that ends with status=0 (i.e., either client initiated the
exchange or it responded with success), extend group formation timeout
to cover that period until the first successfully completed data
connection. This allows the GO to remove the group automatically if the
client devices does not connect within
P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE (15) seconds.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Previously, GO considered the group to be fully formed at the completed
of WPS provisioning step. This would leave the group running until idle
timeout (which may not be enabled) or explicit removal if the client
fails to connect for any reason. Since the client is expected to connect
immediately after the WPS provisioning step, extend group formation
timeout to cover that period until the first successfully completed data
connection. This allows the GO to remove the group automatically if the
client devices does not connect within P2P_MAX_INITIAL_CONN_WAIT_GO (10)
seconds.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
It was possiblle for the group formation timeout to be left running even
after the P2P Client connected to the group if the WPS provisioning step
was not completed cleanly (e.g., due to WSC_Done not getting received
from the client). There is no need to remove the group in such case due
to the initial group formation timeout, so work around this by removing
that timeout on data connection.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
wpa_supplicant crashes if driver configuration for AP mode interface
configuration fails after group negotiation. This is because of a
regression from commit 1075b29571 that
ends up freeing the wpa_s instance from within
wpa_supplicant_create_ap() without the caller knowing.
Fix this by using an eloop timeout to free remove the P2P group so that
wpa_supplicant_create_ap() and especially wpa_supplicant_associate()
callers do not need to know about interface getting possibly removed. In
addition, move the P2P specific code into p2p_supplicant.c where it
really belongs. This allows the already existing group formation timeout
to be used by reducing the timeout to zero.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Avoid potential issues with removing a P2P group on PSK failure directly
from the wpa_supplicant_event() call since the caller (in driver_*.c)
may not be prepared for the interface disappearing at that point in
time.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
It is possible for the GO of a persistent group to change the PSK or
remove a client when per-client PSKs are used and this can happen
without the SSID changing (i.e., the group is still valid, but just not
for a specific client). If the client side of such persistent group ends
up trying to use an invalidated persistent group information, the
connection will fail in 4-way handshake. A new WPS provisioning step is
needed to recover from this.
Detect this type of case based on two 4-way handshake failures when
acting as a P2P client in a persistent group. A new
"P2P-PERSISTENT-PSK-FAIL id=<persistent group id>" event is used to
indicate when this happens. This makes it easier for upper layers to
remove the persistent group information with "REMOVE_NETWORK <persistent
group id>" if desired (e.g., based on user confirmation).
In addition to indicating the error cases for persistent groups, all
this type of PSK failures end up in the client removing the group with
the new reason=PSK_FAILURE information in the P2P-GROUP-REMOVED event.
Signed-hostap: Jouni Malinen <j@w1.fi>
If a client joins a P2P group multiple times, replace the previous
per-client PSK entry instead of adding a new entry each time.
Signed-hostap: Jouni Malinen <j@w1.fi>
The new control interface command P2P_REMOVE_CLIENT <P2P Device
Address|iface=Address> can now be used to remove the specified client
from all groups (ongoing and persistent) in which the local device is a
GO. This will remove any per-client PSK entries and deauthenticate the
device.
Signed-hostap: Jouni Malinen <j@w1.fi>
Record all generated per-client PSKs in the persistent group network
block and configure these for the GO Authenticator whenever re-starting
the persistent group. This completes per-client PSK support for
persistent groups.
Signed-hostap: Jouni Malinen <j@w1.fi>
Even after listen duration is over, P2P module remained in
P2P_LISTEN_ONLY state, which is blocking station mode scans. Fix this by
stopping P2P listen explicitly to update p2p_state to IDLE when listen
duration expires.
Signed-hostap: Syed Asifful Dayyan <syedd@broadcom.com>
By default, P2P is initialized for all driver interfaces and this makes
P2P getting initialized for non-P2P station interface if the supplicant
is started first on this interface. If an interface is dedicated for
non-P2P station mode, it is now possible to disable P2P initialization
by adding 'p2p_disabled=1' in the configuration file of non-P2P station
interface, irrespective of the order in which supplicant is started.
Signed-hostap: Sreenath Sharma <sreenats@broadcom.com>
Previously, concurrent station mode scans were postponed during an
ongoing P2P group formation up to the point of completed WPS
provisioning step. This would allow a scan to be started before the P2P
client has completed association for the data connection if a scan
request were timed to hit the window between the provisioning step and
the following association. Avoid this by extending P2P-in-progress state
to continue until the first data connection has been completed as part
of group formation. Use a ten second timeout for this to avoid leaving
scans disabled indefinitely if the client fails to connect completely.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This provides status information about the negotiated group to
wpa_supplicant control interface monitors during group formation in a
form that is easier to use than having to fetch the information
separately.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
When 'p2p_group_remove *' is called while the station interface
is connected, the flow also disconnects the station interface.
Fix this by skipping non-P2P interfaces in the iteration.
Signed-hostap: Ilan Peer <ilan.peer@intel.com>
This reverts commit ce970851af.
It turned out that this breaks lots of use cases where p2p_find is
issued while already in p2p_listen state. As such, we cannot reject
p2p_find this easily without checking for more specific cases.
Signed-hostap: Jouni Malinen <j@w1.fi>
Though p2p_find is not expected during ongoing P2P connection, it is
possible that any third party application issues a p2p_find resulting in
connection failure. Address this by rejecting any p2p_find command while
connection is in progress.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Change the P2P flows to use the number of concurrent channels
supported by the device and the number of currently used channels
for the P2P flows.
Signed-hostap: Ilan Peer <ilan.peer@intel.com>
Signed-hostap: David Spinadel <david.spinadel@intel.com>
There is no need to wait for the 15 second group formation timeout
before indicating P2P group formation failure if GO mode cannot be
started successfully for some reason.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Adding a new wpa_supplicant control interface for the dedicated
P2P_DEVICE would be quite confusing for programs that manage P2P
operations. Remove this control interface and require the global control
interface to be used since it will provide consistent interface for both
the new dedicated P2P_DEVICE (non-netdev) and old style P2P management
through a netdev.
Signed-hostap: Jouni Malinen <j@w1.fi>
The interface name for the P2P group interface is derived from the
P2P management interface. When the P2P management interface is a
P2P Device interface, i.e., p2p-dev-wlanX, the name for the group
interface is abbreviated to p2p-X (X being group index). When the
P2P management interface starts with p2p-dev- use its postfix
instead. So P2P management interface p2p-dev-wlan3 results in group
interface name p2p-wlan3-0.
Signed-hostap: Arend van Spriel <arend@broadcom.com>
If the capability flag of the driver indicates a dedicated P2P Device is
supported, a P2P Device interface is created.
Create the P2P Device in main interface creation loop when the added
interface flags support and P2P supplicant is not yet initialized
avoiding recursion of add_interface.
Do not register l2_packet for P2P Device interface (both for EAPOL and
for TDLS).
Signed-hostap: Arend van Spriel <arend@broadcom.com>
Setting p2p_no_group_iface means 'use P2P management interface as P2P
connection interface' because it attempts to change the interface type.
The P2P_DEVICE is a dedicated interface and can not be changed. As such
ignore the configuration option.
Signed-hostap: Arend van Spriel <arend@broadcom.com>
If the driver wrapper supports best operation channel indication, the
p2p_group_add command can now use special values (freq=2 and freq=5) to
indicate that the re-invoked persistent GO is to be started on the
specified band.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
When STA interface is connected and P2P interface gets invited in a
different channel from previous P2P group, the invitiation would fail
because of no common channel found. Fix this by using different logic
when device support multi channel concurrency.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This removes the "IFNAME=<ifname> " prefix from P2P events that are
received through the global control interface since these events are not
really specific to any network interface, but the full device.
Signed-hostap: Jouni Malinen <j@w1.fi>
Replace direct wpa_msg() calls with p2p_dbg(), p2p_info(), and p2p_err()
calls that use a new debug_print() callback to handle actual debug
printing outside the P2P module.
Signed-hostap: Jouni Malinen <j@w1.fi>
This removes wpa_ctrl.h dependency from src/p2p/* and makes the P2P
events more consistent, i.e., everything that is aimed for upper layer
processing from the wpa_supplicant control interfaces is generated in
p2p_supplicant.c.
Signed-hostap: Jouni Malinen <j@w1.fi>
Commit 21d996f775 added p2p_pref_chan as a
configuration file parameter, but included only the case of dynamically
setting this at runtime through the control interface SET command.
Complete this functionality by taking this value into use directly from
the configuration file, too.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This can be used to configure wpa_supplicant to ignore old scan results
from the driver cache in cases where such results were not updated after
the scan trigger from wpa_supplicant. This can be useful in some cases
where the driver may cache information for a significant time and the AP
configuration is changing. Many such cases are for testing scripts, but
this could potentially be useful for some WPS use cases, too.
Signed-hostap: Jouni Malinen <j@w1.fi>
If the AP (P2P GO) has changes its channel of SSID recently, the BSS
table may have multiple entries for a BSSID. Select the one which was
most recently updated for WPS/P2P operations in such case to increase
the likelihood of using current information.
Signed-hostap: Jouni Malinen <j@w1.fi>
sta_scan_pending was supposed to be accurate enough for determining
whether a P2P scan needs to be postponed. However, it has turned out
that there were cases where sta_scan_pending was not cleared properly.
While the known cases have now been addressed, it is possible that some
other cases may still exist. To avoid issues with P2P operationg getting
stuck, verify more carefully that there is a real pending station mode
scan (either in progress or scheduled to be requested).
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Make the implementation more consistent and cleaner by using a single
function for addressing all the cases where completion of a station mode
scan operation allows a P2P operation (search) to be re-started.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
If a peer replies to persistent group invitation with status code 8
(unknown group), remove the peer from the p2p_client_list if we are the
GO or remove the persistent group if we are the P2P client since it
looks like that the peer has dropped persistent group credentials and
the provisioning step needs to be executed again.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
p2p_ignore_shared_freq=1 in the configuration file (or "SET
p2p_ignore_shared_freq 1" on control interface) can now be used to
configure wpa_supplicant to ignore the preference on shared operating
channel when the driver support multi-channel concurrency. The default
behavior is to try to start any new P2P group on an operating channel
that is already in use on another virtual interface to avoid extra cost
from hopping between multiple channels. If this new parameter is set to
1, such preference is not used and instead, the channel for the new P2P
group is selected based on other preferences while ignoring operating
channels of any concurrent connection.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Commit 50285f5ca8 changed number of rules
in channel selection and among other things, it broke the design where
the currently used operating channel on a virtual interface that is
shared by the same radio is preferred to avoid costs related to
multi-channel concurrency. Fix this regression by making the P2P module
aware of the shared channel and using that preference as the highest
priority when re-selecting the channel during negotiation.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Commit 79879f4ae8 enabled all channels to
be used when negotiating channel with a driver that supports
multi-channel concurrency. Extend that to cover cases where the channel
is not being negotiated (e.g., p2p_group_add to start a GO).
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Commit 77dfafd07d cancels group formation
timeout on group removal case but failed to reset the
p2p_in_provisioning flag. This can lead to repeated p2p_find failures if
the group gets removed before completion of the WPS provisioning step
(e.g., GO tears down the group). Fix this by clearing
p2p_pin_provisioning when cancelling group formation.
Signed-hostap: Vivek Natarajan <nataraja@qca.qualcomm.com>
When p2p_invite persistent=<id> is used to request a persistent group to
be re-invoked, the peer may reply with status=1 (info not yet available)
if upper layer processing of the invitiation is requested. The peer is
ten expected to start another invitation exchanged within 120 seconds if
the user authorizes the connection. Allow this process to be used more
easily by automatically authorizing the peer that we tried to invite to
use this second invitation sequence even if persistent_reconnect=0.
For this mechanism to work, the device that starts the invitation needs
to start listen mode to be able to receive the invitation request from
the peer. At least for now, this is not done automatically, but future
changes could potentially enable this automatically at least if there
are no concurrent operations in progress.
Example sequence on the initiator:
cmd: P2P_INVITE persistent=1 peer=<addr>
event: P2P-INVITATION-RESULT status=1
cmd: P2P_LISTEN 120
wait for peer to start another invitiation round.. group will be
re-invoked automatically
On the peer (with persistent_reconnect=0):
event: P2P-INVITATION-RECEIVED sa=<addr> persistent=1 [freq=<MHz>]
wait for user approval
cmd: P2P_INVITE persistent=1 peer=<addr>
group will be re-invoked automatically
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
When a device that is a GO in a persistent group receives an Invitation
Request from a P2P client and persistent_reconnect=0, upper layer is
notified of this with P2P-INVITATION-RECEIVED event. The upper layer is
supposed to run another invitation exchange is this case, but if that
does not happen and the GO is started without successful (status=0)
invitation exchange, the operating channel for the group may end up
getting set in a way that the P2P client is not able to support. Provide
optional freq parameter in the P2P-INVITATION-RECEIVED event on the GO
side. If this parameter is received and the upper layer decides to issue
P2P_GROUP_ADD command, that command should include this freq parameter
to make sure the operating channel gets selected from the set that the
peer can support.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Peer device includes its list of allowed operating channels in the
Invitation Response frame. When we are becoming the GO, use that list
from the peer to filter out acceptable channels to avoid selecting a
channel that the peer is unable to use.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
When re-invoking a persistent group in P2P client role, the new
pref=<MHz> parameter can now be used with the p2p_invite command to
indicate a preferred operating frequency. Unlike the older freq=<MHz>
parameter, this leaves GO an option to select another channel (from our
supported channels) if the GO cannot accept the channel.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
