If p2p_listen is issued during a p2p_scan, a pending after-scan operation
is scheduled. However, since there is support for only a single pending
operation, this was able to override a previously scheduled pending
connect command. This can break some command sequences, so give higher
priority to pending connect operation.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
When waiting for go_neg frame from the peer in WAIT_PEER_CONNECT state,
I have observed that sometimes it takes 20 to 30 secs for successful GO
negotiation. I also found out that it is because of 1 second idle time,
in WAIT_PEER_CONNECT state. While it is good to have 1 second idle time
[for doing power-save or doing some other legacy STA Scan or some other
useful stuff], this makes GO Negotiation process slow.
We wait for 1 second idle and then listen for a random time between
100(min)-300(max) ms. Assume P1 is in WAIT_PEER_CONNECT state and P2 is
the one which is now to send go_neg frame. If P2 sends GO Negotiation
frame just at the boundary of 300 ms of P1 and assume that P2 takes
close to 600-800 ms for one iteration of sending go_neg request (one
iteration is GO Negotiation Request frame time + dwell time +
listen_time), P2 needs to transmit at least 16-18 Action frames for
hitting the listen time of P1.
Following patch reduces the idle time to 500 ms. Alternatively we can
increase the listen time interval to 500 ms just for WAIT_PEER_CONNECT
state.
Provision discovery from a known peer should actually check for
dev->flags & P2P_DEV_PROBE_REQ_ONLY. This is creating an issue of
updating the listen frequency of peer with the PD request frame
frequency. PD request frame will be sent by the peer on our local listen
frequency. This patch fixes that error. Suggested check has already been
implemented in the invitation req receive path.
The Provision Discovery Request needs to be sent on the operating
channel of the GO and as such, the frequency from the BSS table
(scan results) need to override the frequency in the P2P peer
table that could be based on the Listen channel of the GO.
Signed-hostap: Jouni Malinen <j@w1.fi>
The GO negotiation response is very cryptic at the moment. For a success
message we only know on which interface the negotiation succeeded, not
which peer. For a failure we know the interface also and a status code
(number).
It will be very useful for clients to know upon receipt of such a message
which peer the negotiation occurred with.
Now that the peer information is available and the API is changed
already, the function composing the D-Bus message might as well include
all GO negotiation information. This is done with a dict to make things
easier on clients if this result information changes down the line.
Signed-hostap: Reinette Chatre <reinette.chatre@intel.com>
Signed-hostap: Johannes Berg <johannes.berg@intel.com>
When the station is connected to P2P GO after calling p2p_find command
the device sees itself. It is related to lack of filtering itself from
clients connected to P2P GO.
Step by step:
1. dev1: p2p_group_add
2. dev2: p2p_connect <MAC1> pbc join
3. dev1: wps_pbc
4. dev2: p2p_find
Skip P2P client information for our own device from a GO with which
we are connected.
A Pending Provision Discovery Request was sent in SEARCH phase after a
previous provision discovery timeout. Fix this by resetting the config
method of P2P device in the pending PD reset function. This avoids the
sending of a pending Provision Discovery Request during the next P2P
search.
Signed-off-by: Jean-Michel.Bachot <jean-michelx.bachot@intel.com>
Some debug messages used incorrect name for Provision Discovery.
Replace "Provisioning Discovery" with "Provision Discovery".
Signed-hostap: Jouni Malinen <j@w1.fi>
It is safer to assume that the driver could be using NoA and reject
any Presence Request unless we are sure that noa NoA is in use.
Signed-hostap: Jouni Malinen <j@w1.fi>
If Provision Discovery Request is sent for GO role (i.e., P2P Group ID
attribute is included), add the group interface name to the control
interface event on the GO. This makes it easier to figure out which
ctrl_iface needs to be used for wps_pbc/wps_pin command to authorize
the joining P2P client.
Signed-hostap: Jouni Malinen <j@w1.fi>
If p2p_prov_disc join command is used prior to p2p_connect join,
skip the duplicated provision discovery exchange.
Signed-hostap: Jithu Jance <jithu@broadcom.com>
When GO negotation fails the WPS method is currently not cleared, which
can result in GO negotiation being resumed when a GO negotiation request
frame is received from the peer. That is unexpected as locally we
already gave up.
This manifests itself in getting
1319574733.955685: wlan0: P2P-GO-NEG-FAILURE status=-1
1319574733.955723: P2P: Removing pending group interface p2p-wlan0-0
...
1319574736.648378: wlan0: P2P: Starting GO Negotiation with previously
authorized peer
...
1319574736.650115: wlan0: P2P: Sending GO Negotiation Response
...
1319574736.988038: wlan0: P2P-GO-NEG-SUCCESS
1319574736.988233: P2P: No pending group interface
1319574736.988268: P2P: Create a new interface p2p-wlan0-1 for the group
Clear the WPS method to avoid this situation. I wasn't
able to test this though, but given the log I can only
assume this is how the situation happened.
Reported-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-hostap: Johannes Berg <johannes.berg@intel.com>
If P2P device expires while a GO Negotiation is in progress, currently
p2p->go_neg_peer is cleared without indicating GO Nego failure. This
will result in pending group interfaces to be left over. This patch will
indicate GO Negotiation failure and will remove any pending group
interfaces.
This patch addresses a corner case in GO-Negotiation case. Consider the
scenario where two devices A and B are in discovery stage and Device B
vanishes [moves out of range] when a connect is issued on the Device A.
Then Device A keeps on retrying the GO Negotiation Request till the
retry limit is reached. On reaching retry limit, the pending group
interface is removed. But suppose if the peer entry in the device list
expires before the retry limit is reached, then pending group interface
was not removed.
Signed-off-by: Jithu Jance <jithu@broadcom.com>
Invalid use of memcpy instead of memcmp in comparison resulted in the
GO interface address getting set incorrectly if the GO did not show up
in scan results anymore.
Signed-hostap: Jouni Malinen <j@w1.fi>
If a P2P client associates with the group while it is
already associated, two member entries may be added to
the group which also confuses num_members counting.
Deal with this by removing the existing entry first
before adding a new one.
I think the way Reinette ran into this was due to our
tx_sync implementation in iwlagn, mac80211 might have
queued two association frames thinking the first one
just failed, but both only went out after the sync was
really successful (which tx_sync doesn't wait for).
Reported-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-hostap: Johannes Berg <johannes.berg@intel.com>
The P2P_FIND command was failing if it was issued at the moment when
a scan operation was in progress. Avoid returning failure in this
case by scheduling the P2P find to start once the ongoing scan is
completed.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
For P2P, the p2p_connect takes in device address argument to make a
connection. However the connected event AP-STA-CONNECTED comes with
interface address. The application listening on events would find it
difficult to map interface address to the p2p device address which is
provided for connection.
Append P2P Device Address to AP-STA-CONNECTED event for P2P Client
connection. This will help applications to easily map the P2P Interface
Address to P2P Device Address on CONNECTED event. For non-P2P case, it
will just print the usual STA MAC address alone.
Signed-off-by: Jithu Jance <jithu@broadcom.com>
The persistent_reconnect configuration parameter was used to decide
whether to accept invitation to re-establish a persistent group.
However, this was not being advertised in the Group Capability bitmap.
Add the Persistent Reconnect bit based on this configuration to GO
Negotiation frames and Beacon/Probe Response frames from the GO.
This currently unused function would have triggered wpabuf overflows
due to incorrect variable being reset to zero in the case the old
NoA wpabuf was large enough for the new data.
If GO Negotiation Request (or in theory, also GO Negotiation Response)
frame is delivered multiple time for processing, the SSID of the group
could end up getting changed. This could result in possible issues if
the peer ended up using different SSID. To avoid this, make sure the
SSID does not get changed unless the negotiation is for a new group.
GAS/ANQP is a generic protocol and in no way specific to P2P, so move
routines used to build GAS/ANQP frames to a separate file that can be
shared for other uses than just P2P service discovery.
The new function, p2p_scan_ie_buf_len(), can be used to figure out
how large a buffer needs to be allocated for p2p_scan_ie() use. This
makes it easier to add new data into the buffer without forcing all
callers to be updated to use a larger buffer.
The P2P search mechanism depends on the same scan functionality that
is used for station mode scans. If these operations are being used
at the same time, scan result processing is not handled properly.
Avoid unexpected behavior by delaying station mode scan requests
if a P2P operation is in progress.
Among other things, this allows the station mode connection attempt
to be continued after a P2P find or group formation has been completed
if the interface is available (i.e., when the P2P group uses a
separate virtual interface).
If the initial attempt to start a scan for p2p_find fails, an error
is reported. However, the P2P scan handler and search state was
left behind. That can result in unexpected behavior when the next
non-P2P scan results are indicated. Avoid this by clearing the
P2P search state on failure.
The p2p->drv_in_listen variable is used to track Listen state operations
in the driver. This is cleared when the driver reports that the Listen
state has ended (p2p_listen_end() gets called). However, it is possible
that the driver does not indicate that if the Listen state is canceled.
This can apparently happen in some cases where p2p_connect command is
issues while the Listen state is in progress.
Work around this issue by clearing p2p->drv_in_listen when Listen state
is stopped as part of p2p_stop operation. This allows the P2P module to
process CONNECT_LISTEN timeout in p2p_timeout_connect_listen() to move
to CONNECT state, e.g., when starting GO Negotiation after Device
Discoverability mechanism.
The default config methods was hardcoded to claim support for
PushButton, Display, and Keypad. While these are supported by
most P2P devices, there may be some cases where it is convenient
to be able to disable a specific config method. Use config_methods
configuration parameter to set the default values for Config Methods
in the P2P Device Info attribute.
The P2P specification (3.1.4.3) disallows use of the Label configuration
method between two P2P devices. This was previously enforced at upper
level, but the obsolete code can be removed from wpa_supplicant. This
adds a bit more strict enforcement of the policy, but should not result
in practical differences since no known P2P implementation uses Label
config method.
Commit e1d526293b added code for verifying
whether the receive Probe Request frame was indicating support for only
802.11b rates, but it missed the for loop for the extended supported
rates element. Add that to fix the validation code for cases where
non-802.11b rates are in the extended supported rates element.
Only accept Probe Request frames that have a Wildcard BSSID and a
destination address that matches with our P2P Device Address or is the
broadcast address per P2P specification 3.1.2.1.1.
Fix a bug with the current dev_found()/dev_lost() usage. Previously
in p2p_device_free() dev_lost() was invoked for devices that had
not been dev_found(). This caused dbus related msgs to stderr like:
"Attempted to unregister path (path[0] = fi path[1] = w1) which isn't
registered"
Signed-off-by: Angie Chinchilla <angie.v.chinchilla@intel.com>
Some P2PDevice properties were not updated in p2p->cfg structure:
reg_class, channel, op_reg_class, and op_channel. Hence, update p2p->cfg
parameters through p2p core calls in wpas_p2p_update_config().
Signed-off-by: Jean-Michel.Bachot <jean-michelx.bachot@intel.com>
Signed-off-by: Jayant Sane <jayant.sane@intel.com>
Move level parameter from p2p_device to p2p_device_info in order to
expose this information and modify D-Bus P2P handler to return this new
parameter through the P2P device properties.
Signed-off-by: Fabien Marotte <fabienx.marotte@intel.com>
Signed-off-by: Jayant Sane <jayant.sane@intel.com>
When provision discovery fails, this new callback will be called
so P2P users can react to the failure.
Signed-off-by: Jayant Sane <jayant.sane@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since the peer may not be in Listen state when the provision discovery
request is sent, try to send the request again number of times when in
IDLE state. This was already done when p2p_find is in progress, but this
commit adds retries to the case where no other P2P operations are in
progress.
Signed-off-by: Jayant Sane <jayant.sane@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When building IE from an empty string and CONFIG_WPS_STRICT is
not defined, redundant 2 bytes are being added to the string.
We have to return right after building the "dummy" string.
Signed-off-by: Eliad Peller <eliad@wizery.com>
Store Manufacturer, Model Name, Model Number, and Serial Number
attributes for P2P peers and expose these through the existing
peer information mechanisms.
Make the P2P code keep track of WPS vendor extensions received from
peers so they can be exposed via DBus later.
Signed-off-by: Jean-Michel Bachot <jean-michelx.bachot@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This adds the ability to add WPS vendor extension attributes in P2P
frames, like GO Negotiation and Probe Response frames.
Signed-off-by: Jean-Michel Bachot <jean-michelx.bachot@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
