Commit graph

372 commits

Author SHA1 Message Date
Jouni Malinen
2a33687ec7 P2P: Remove unnecessary ifdef CONFIG_NO_CONFIG_WRITE
wpa_config_write() is defined as a dummy function even if actual
operation to write the configuration file are commented out from the
build. This cleans up the code a bit and removed a compiler warning on
set-only variable.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2014-02-25 19:31:16 +02:00
Jouni Malinen
211d7ab3d8 P2P: Add even more debug prints for Probe Request in non-Listen state
It looks like discovery_dev_id test case can still fail and based on the
previously added debug prints, this is happening since the P2P module
believes it is not in Listen state even when a P2P_LISTEN was issued.
p2p_listen_cb() did not get called on remain-on-channel event for some
reason, so lets add more debug to find out why this can happen.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
2014-02-20 16:59:29 +02:00
Andrei Otcheretianski
b3253ebb73 wpa_supplicant: Complete radio works on disable event
While testing rfkill blocking of a scanning interface, it
was seen that the ongoing scan never completes. This happens
since EVENT_SCAN_RESULTS is discarded on a disabled interface.

Fix this and also other possible radio work completion issues
by removing all the radio works (including started) of the
disabled interface.

To be able to remove already started radio works, make their
callbacks be reentrant with deinit flag (when the work
is started), so each radio work should be able to handle
its own termination.

Signed-hostap: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
2014-02-16 00:06:23 +02:00
Max Stepanov
cbf21c7cb5 P2P: Avoid compiler warning in p2p_supplicant.c
Initialize flag variable explicitly to avoid [-Wmaybeuninitialized]
compiler warning in wpas_p2p_verify_channel().

Signed-hostap: Max Stepanov <Max.Stepanov@intel.com>
2014-02-13 15:46:37 +02:00
Mahesh A Saptasagar
062a7c0d67 Fix persistent P2P connection failure in case channel list changes
P2P persistent connection may fail due to 802.11d channel change event
invalidating support of the operating frequency sent in the invitation
request, before receiving the invitation response. If the operating
frequency is invalid at the time the invitation response is processed
and there is no forced frequency provided by user, allow frequency
re-selection.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
2014-02-07 15:44:41 +02:00
Prashanth Kumar
1b56d398a7 wpa_supplicant: Fix misplaced os_free
os_free has wfd_dev_info_hex as an argument which is defined within
CONFIG_NO_STDOUT_DEBUG

Signed-hostap: Prashanth Kumar <prashanthkumar.kr@globaledgesoft.com>
2014-02-03 19:35:09 +02:00
Jouni Malinen
b56f6c8869 P2P NFC: Add support for freq option in NFC ctrl_iface commands
This can be used to force an operating channel for P2P group formation
triggered by NFC operations.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
2014-01-27 21:44:31 +02:00
Jouni Malinen
91a65018d8 WPS NFC: Use BSSID and AP Channel from handover select
These optional attributes, if present, can be used to speed up the
initial connection by using a single channel scan.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
2014-01-27 21:44:31 +02:00
Jouni Malinen
8e9f53c367 P2P NFC: Static handover with NFC Tag on client
This adds a new P2P Invitation mechanism to invite a P2P Device with an
NFC Tag to an already operating group when the GO with NFC Device reads
the NFC Tag. The P2P Device with the NFC Tag will then accept invitation
and connect to the group automatically using its OOB Device Password.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
2014-01-27 21:44:30 +02:00
Jouni Malinen
dd87677115 P2P NFC: Enable own NFC Tag on GO Registrar
When "P2P_SET nfc_tag 1" is used to enable the own NFC Tag for P2P, also
enable it for any running GO interface.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
2014-01-27 21:44:30 +02:00
Jouni Malinen
abe44e3ca2 P2P NFC: Add GO info into handover message when in client role
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>
2014-01-27 21:44:30 +02:00
Jouni Malinen
23318bea94 P2P NFC: Optimize join-a-group operation based on NFC information
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>
2014-01-27 21:44:30 +02:00
Jouni Malinen
86e320819c P2P NFC: Copy DH parameters to a separate group interface
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>
2014-01-27 21:44:30 +02:00
Jouni Malinen
59b45d1afe P2P NFC: Add processing of P2P client while NFC handover case
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>
2014-01-27 21:44:30 +02:00
Jouni Malinen
74df9ecd4a P2P NFC: Do not try to join peer if both devices are already GO
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>
2014-01-27 21:44:30 +02:00
Jouni Malinen
25ef8529c1 P2P: Add support for IP address assignment in 4-way handshake
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>
2014-01-27 21:44:26 +02:00
Jouni Malinen
c4f87a701b P2P NFC: Add NFC tag enabling for static handover
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>
2014-01-27 21:10:56 +02:00
Jouni Malinen
dd37a93884 P2P NFC: Report handover select from tag for static handover
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>
2014-01-27 21:10:56 +02:00
Jouni Malinen
db6ae69e6b P2P NFC: Report connection handover as trigger for P2P
"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>
2014-01-27 21:10:56 +02:00
Jouni Malinen
9358878055 P2P NFC: Build connection handover messages
"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>
2014-01-27 21:10:56 +02:00
Jouni Malinen
ab9e34426f P2P NFC: Pass OOB Device Password ID to P2P
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>
2014-01-27 21:10:56 +02:00
Jouni Malinen
ea43ad960b P2P: Make group operating channel available
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>
2014-01-27 21:10:55 +02:00
Arif Hussain
253f2e3795 P2P: Apply unsafe frequency rules to available channels
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>
2014-01-27 11:49:05 +02:00
David Spinadel
f62a3c2fce P2P: Clone dtim_period to a new interface
Cloning dtim_period is needed for P2P GO.

Signed-hostap: David Spinadel <david.spinadel@intel.com>
2014-01-22 19:24:41 +02:00
Rashmi Ramanna
a2d6365760 P2P: Extend the listen time based on the active concurrent session
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>
2014-01-20 22:55:09 +02:00
Jithu Jance
37b4198af4 P2P: Use GO's operating channel to optimize scan during join
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>
2014-01-17 11:57:07 +02:00
Jouni Malinen
c48414af8f P2P: Limit join-a-group scans based on SSID from invitation
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>
2014-01-13 21:39:06 +02:00
Jouni Malinen
95fb2db242 P2P: Reject group formation on WPS provisioning failure
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>
2014-01-07 10:45:12 +02:00
Jouni Malinen
e05e130837 P2P: Use radio work to protect offchannel Action frame exchanges
Signed-hostap: Jouni Malinen <j@w1.fi>
2014-01-07 10:45:09 +02:00
Jouni Malinen
e1d1c8e223 Use radio work for P2P Listen requests
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>
2014-01-07 09:45:32 +02:00
Jouni Malinen
1b5d4714dd Use radio work for P2P scan requests
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>
2014-01-05 22:39:25 +02:00
Jouni Malinen
c64e3a08a9 P2P: Send received Presence Response information to ctrl_iface monitors
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>
2014-01-01 18:44:44 +02:00
Jouni Malinen
152cff6ba6 P2P: Remove WPA_DRIVER_FLAGS_P2P_MGMT option
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>
2013-12-29 18:20:47 +02:00
Jouni Malinen
a5f40eff18 Track whether scan was started by us or an external program
This can be used to improve scan behavior in cases external programs
request scans directly from the driver.

Signed-hostap: Jouni Malinen <j@w1.fi>
2013-12-26 18:27:48 +02:00
Johannes Berg
151ab808fa P2P: Use monotonic time for GO client waiting
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>
2013-12-24 08:00:03 +02:00
Johannes Berg
acb69cec6f wpa_supplicant: Use monotonic time for RX/BSS times
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>
2013-12-24 07:27:02 +02:00
Jithu Jance
8567866d75 P2P: Handle frequency conflict in single channel concurrency case
Based on priority, remove the connection with least priority whenever
a frequency conflict is detected.

Signed-hostap: Jithu Jance <jithu@broadcom.com>
2013-12-07 18:55:58 -08:00
Dmitry Shmidt
b125c48fce P2P: Add wfd_dev_info= field for device found event
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>
2013-12-07 17:57:55 -08:00
Jouni Malinen
5b81927d58 Use wpa_radio data for wpas_p2p_search_delay()
This replaces the now unnecessary iteration of get_radio_name() calls.

Signed-hostap: Jouni Malinen <j@w1.fi>
2013-11-24 21:20:14 +02:00
Rashmi Ramanna
6fc48481e4 P2P: Short scan wait to speed up the group re-invocation
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>
2013-11-20 16:35:30 +02:00
Jouni Malinen
1b665cbf51 P2P: Fix channel preference use for MCC p2p_connect
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>
2013-11-19 12:39:29 +02:00
Jouni Malinen
5624ccfe93 P2P: Optimize default case for own freq preference setting
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>
2013-11-19 12:29:25 +02:00
Jouni Malinen
d0f61a4bea P2P: Fix p2p_ignore_shared_freq=1 when inviting a peer
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>
2013-11-19 12:26:16 +02:00
Jouni Malinen
21e491f2f6 P2P: Fix p2p_ignore_shared_freq=1 during invitation processing
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>
2013-11-19 12:15:45 +02:00
Jouni Malinen
107a89448c P2P: Clean up wpas_p2p_setup_freqs() debug message
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>
2013-11-18 18:16:27 +02:00
Jouni Malinen
7d669cf7a1 P2P: Clean up wpas_p2p_init_go_params()
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>
2013-11-18 18:13:15 +02:00
Jouni Malinen
b17d89bd10 P2P: Fix channel selection for MCC case
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>
2013-11-18 16:53:44 +02:00
Vinay Krishna Eranna
dcd25d4c3b P2P: Use negotiated channel from invitation for persistent GO
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>
2013-11-16 18:05:28 +02:00
Jouni Malinen
217cf4991d P2P: Add more debug prints for frequency selection
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>
2013-11-05 11:07:51 +02:00
Ilan Peer
4dd3f86834 P2P: Fix bug in GO frequency selection
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>
2013-11-05 10:55:22 +02:00