The mechanism of using Status attribute in GO Negotiation Request was
used in some early specification drafts, but it is not compliant with
the current P2P specification where GO Negotiation Request is used only
for the purpose of initiating a new GO Negotiation. However, some
deployed devices use it to indicate rejection of GO Negotiation in a
case where they have sent out GO Negotiation Response with status 1. The
P2P specification explicitly disallows this.
To avoid unnecessary interoperability issues and extra frames, mark the
pending negotiation as failed and do not reply to this GO Negotiation
Request frame. Previously, GO Negotiation Response frame with status=4
was sent back as an indication of the GO Negotiation Request frame being
invalid. This response is not sent anymore and the status code for the
P2P-GO-NEG-FAILURE event is changed from 4 (invalid parameters) to 11
(rejected by user) for this specific workaround case.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
If the peer device has already acknowledge receipt of the Invitation
Request frame, it is better not to re-start invitation by sending
another Invitation Request. This should not be needed since the peer
already has received the Invitation Request frame and sending the second
round in this type of sequence can cause issues with nl80211 offloaded
offchannel TX operations since driver_nl80211.c will lose the cookie
value for the first pending Action frame and may not be able to cancel
offchannel wait for it properly. this has been seen to trigger a failure
in the p2p_go_invite_auth test case with the scan failing due to GO
sending out Probe Response frame on incorrect channel (the channel used
in that not-cancelled Action TX).
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
1. In wpa_config_process_bgscan() fix memory leak after
calling wpa_config_parse_string()
2. In hostapd_config_defaults(), on failure to allocate bss->radius,
conf->bss was not freed.
3. In p2p_deauth_nofif(), memory allocated in p2p_parse_ies() was not
freed in case of NULL minor_reason_code.
4. In p2p_disassoc_nofif(), memory allocated in p2p_parse_ies() was
not freed in case of NULL minor_reason_code.
5. In p2p_process_go_neg_conf(), memory allocated was not freed in
case that the P2P Device interface was not waiting for a
GO Negotiation Confirm.
6. In wpa_set_pkcs11_engine_and_module_path(), the wrong pointer was
checked.
Signed-hostap: Eytan Lifshitz <eytan.lifshitz@intel.com>
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>
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>
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>
When NFC connection handover is used to trigger GO Negotiation, the
channel used for the GO Negotiation frames is already known. As such,
there is no need to use the Listen operations to find the peer.
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>
"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 functionality is needed for other messages, too, so split the group
info building code into a separate helper function.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The new default value (from 300 to 60 seconds) makes the internal P2P
peer list somewhat faster to react to peers becoming unreachable while
still maintaining entries for some time to avoid them disappearing
during user interaction (e.g., selecting a peer for a connection or
entering a PIN).
Signed-off-by: Dmitry Shmidt <dimitrysh@google.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>
Previously, GO Negotiation Request frame was used to update a peer entry
if only a Probe Request from that peer had been received. However, it
would be possible, even if unlikely, for a peer to be discovered based
on receiving Provision Discovery Request frame from it and no Probe
Request frame. In such a case, the Listen frequency of the peer would
not be known and group formation could not be (re-)initialized with that
peer. Fix this by allowing the GO Negotiation Request frame to update
peer entry if the current peer entry does not include Listen or
Operating frequency.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This adds one more case of active P2P peer detection so that
p2p_expire_peers() cannot hit a case where a GO Negotiation peer would
be removed.
Signed-hostap: Jithu Jance <jithu@broadcom.com>
This reverts commit 792c8877c3
('P2P: Send GO Negotiation Confirm without wait').
Some drivers rely on the wait period for sending packets on the
off-channel. If the wait value is small, there's a race condition where
the driver ROC might complete before the packet was sent out. This
doesn't impede other drivers, as the wait is cancelled when a
Tx-completion arrives from the remote peer.
Signed-hostap: Arik Nemtsov <arik@wizery.com>
The missing call to scan_action_done() may keep us off-channel for 250
ms following sending GO Negotiation Response. In case the operating
channel is different from this channel and we're GO, a race could lead
to start beaconing while off-channel. This could potentially cause the
Beacon frames to go out on incorrect channel with some drivers.
Signed-hostap: Eyal Shapira <eyal@wizery.com>
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 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>
Some devices disable use of U-NII-1 (channels 36-48) for P2P due to it
being indoor use only in number of locations. If U-NII-3 (channels
149-161) is available, try to pick a channel from that range first
during random channel selection to reduce likelihood of interoperability
issues.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
If there are no other preferences from local configuration or driver,
prefer a random VHT channel instead of falling back to the fixed
pre-configured channel or 5 GHz/HT40 channel preference.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
If there are no other preferences from local configuration or driver,
prefer a random HT40 channel instead of falling back to the fixed
pre-configured channel or 5 GHz channel preference.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
If there are no other preferences from local configuration or driver,
prefer a random 5 GHz channel instead of falling back to the fixed
pre-configured channel (which is selected by default to be 1, 6, or 11).
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Use the new p2p_channel_select() function to select a VHT channel
at random when no other preferences are in effect.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
Use the new p2p_channel_select() function to select an HT40 channel
at random when no other preferences are in effect.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
The new p2p_channel_select() function can be re-used to implement
random channel selection from a set of operating classes in all
places that need such functonality.
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>
When WFD Subelements are set, the IE in the Beacon frames of already
existing groups are not updated. This patch fixes this issue by setting
beacon_update to be 1 on WFD IE update.
Signed-hostap: Andrei Otcheretianski <andrei.otcheretianski@intel.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>
Even though the length of this buffer is based only on locally
configured information, it is cleaner to include explicit buffer room
validation steps when adding the attributes into the buffer.
Signed-hostap: Jouni Malinen <j@w1.fi>
This makes it easier to go through the P2P channel list operations in
the debug log without having to parse through the hexdump manually.
Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This fixes issues where a GO used offchannel-TX operation to send an
Invitation Request frame. Wait for the offchannel TX operation needs to
be stopped as soon as the Invitation Response frame has been received.
This addresses some issues where Probe Response frame from the GO
through the monitor interface may end up going out on a wrong channel
(the channel of this offchannel TX operation for invitation).
Signed-hostap: Jouni Malinen <j@w1.fi>
Join-a-group needs to force the current operating channel of the target
group as the frequency to use for the PD exchange. When the channel was
selected based on a BSS entry for the GO, this worked only for the first
PD Request frame while the retries reverted to a potentially different
channel based on a P2P peer entry. Fix this by maintaining the forced
channel through the PD retry sequence.
Signed-hostap: Jouni Malinen <j@w1.fi>
P2P Invitation Response frame is required to include the Channel List
attribute only in Status=Success case. Skip the debug message claiming
that a mandatory attribute was not included in non-Success case.
Signed-hostap: Jouni Malinen <j@w1.fi>
