If QoS is supported by the card, add an appropriate IE to TDLS setup-
request and setup-response frames.

Consolidate the setting of the WMM info IE across mac80211.
Signed-off-by: NArik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: NLiad Kaufman <liad.kaufman@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

When sending setup-failure frames, set the capability field to zero, as
mandated by the specification (IEEE802.11-2012 8.5.13).
Signed-off-by: NArik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: NLiad Kaufman <liad.kaufman@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Most setup-specific information elements are not to be added when a
setup frame is sent with an error status code.
Signed-off-by: NArik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: NLiad Kaufman <liad.kaufman@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

When building TDLS setup frames, use the IE order mandates in the
specification, splitting extra IEs coming from usermode.
Signed-off-by: NArik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Add all information elements for TDLS discovery and setup in the same
function.
Signed-off-by: NArik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: NLiad Kaufman <liad.kaufman@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

The patch "8f02e6b mac80211: make sure TDLS peer STA exists during
setup" broke TDLS error paths where the STA doesn't exist when sending
the error.
Fix it by only testing for STA existence during a non-error flow.
Signed-off-by: NArik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Infer the TDLS initiator and track it in mac80211 via a STA flag. This
avoids breaking old userspace that doesn't pass it via nl80211 APIs.

The only case where userspace will need to pass the initiator is when the
STA is removed due to unreachability before a teardown packet is sent.
Support for unreachability was only recently added to wpa_supplicant, so
it won't be a problem in practice.
Signed-off-by: NArik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

After sending a TDLS discovery-request, we expect a reply to arrive on
the AP's channel. We must stay on the channel (no PSM, scan, etc.), since
a TDLS setup-response is a direct packet not buffered by the AP.
Add a new mac80211 driver callback to allow discovery session protection.
Signed-off-by: NArik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Make sure userspace added a TDLS peer station before invoking the
transmission of the first setup frame. This ensures packets to the peer
won't go through the AP path.
Signed-off-by: NArik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Write a mac80211 to the cfg80211 API for requesting a userspace TDLS
operation. Define TDLS specific reason codes that can be used here.
Signed-off-by: NArik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

As the spec mandates, flush data in the AP path before transmitting the
first setup frame. Data packets transmitted during setup are already
dropped in the Tx path.

For the teardown flow, flush all packets in the direct path before
transmitting the teardown frame. Un-authorize the peer sta after teardown
is sent, forcing all subsequent Tx to the peer through the AP.

Make sure to flush the queues when disabling the link to get the
teardown packet out.
Signed-off-by: NArik Nemtsov <arikx.nemtsov@intel.com>
[adjust to Luca's new quuee API and stop only vif queues]
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

There are setup/teardown specific actions to be done that accompany
the sending of a TDLS management packet. Split the main function to
simplify future additions.
Signed-off-by: NArik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

The TDLS initiator is set once during link setup. If determines the
address ordering in the link identifier IE.
Use the value from userspace in order to have a correct teardown packet.
With the current code, a teardown from the responder side fails the TDLS
MIC check because of a bad link identifier IE.
Signed-off-by: NArik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

The TDLS initiator is set once during link setup. If determines the
address ordering in the link identifier IE.

Fix dependent drivers - mwifiex and mac80211.
Signed-off-by: NArik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

When setting up a TDLS session, register a delayed work to remove
the peer if setup times out. Prevent concurrent setups to support this
capacity.
Signed-off-by: NArik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

This propagates through all the drivers and mac80211.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

With new additions planned, this code is getting too big for cfg.c.
Signed-off-by: NArik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>