linux-toradex.git/net/mac80211/mlme.c, branch v4.4.78

cfg80211/mac80211: fix BSS leaks when abandoning assoc attempts

2017-01-09T07:07:42+00:00

commit e6f462df9acd2a3295e5d34eb29e2823220cf129 upstream.

When mac80211 abandons an association attempt, it may free
all the data structures, but inform cfg80211 and userspace
about it only by sending the deauth frame it received, in
which case cfg80211 has no link to the BSS struct that was
used and will not cfg80211_unhold_bss() it.

Fix this by providing a way to inform cfg80211 of this with
the BSS entry passed, so that it can clean up properly, and
use this ability in the appropriate places in mac80211.

This isn't ideal: some code is more or less duplicated and
tracing is missing. However, it's a fairly small change and
it's thus easier to backport - cleanups can come later.

Signed-off-by: Johannes Berg 
Signed-off-by: Greg Kroah-Hartman

mac80211: Requeue work after scan complete for all VIF types.

2016-03-03T23:07:26+00:00

commit 4fa11ec726a32ea6dd768dbb2e2af3453a98ec0a upstream.

During a sw scan ieee80211_iface_work ignores work items for all vifs.
However after the scan complete work is requeued only for STA, ADHOC
and MESH iftypes.

This occasionally results in event processing getting delayed/not
processed for iftype AP when it coexists with a STA. This can result
in data halt and eventually disconnection on the AP interface.

Signed-off-by: Sachin Kulkarni 
Signed-off-by: Johannes Berg 
Signed-off-by: Greg Kroah-Hartman

mac80211: handle width changes from opmode notification IE in beacon

2015-12-15T12:16:47+00:00

An AP can send an operating channel width change in a beacon
opmode notification IE as long as there's a change in the nss as
well (See 802.11ac-2013 section 10.41).
So don't limit updating to nss only from an opmode notification IE.

Signed-off-by: Eyal Shapira 
Signed-off-by: Emmanuel Grumbach 
Signed-off-by: Johannes Berg

mac80211: suppress unchanged "limiting TX power" messages

2015-12-15T12:14:04+00:00

When the AP is advertising limited TX power, the message can be
printed over and over again. Suppress it when the power level
isn't changing.

This fixes https://bugzilla.kernel.org/show_bug.cgi?id=106011

Signed-off-by: Johannes Berg

mac80211: treat bad WMM parameters more gracefully

2015-11-03T09:56:26+00:00

As WMM is required for HT/VHT operation, treat bad WMM parameters
more gracefully by falling back to default parameters instead of
not using WMM assocation. This makes it possible to still use HT
or VHT, although potentially with reduced quality of service due
to unintended WMM parameters.

Signed-off-by: Johannes Berg

mac80211: fixup AIFSN instead of disabling WMM

2015-11-03T09:56:13+00:00

Disabling WMM has a huge impact these days. It implies that
HT and VHT will be disabled which means that the throughput
will be drammatically reduced.
Since the AIFSN is a transmission parameter, we can play a
bit and fix it up to make it compliant with the 802.11
specification which requires it to be at least 2.
Increasing it from 1 to 2 will slightly reduce the
likelyhood to get a transmission opportunity compared to
other clients that would accept to set AIFSN=1, but at
least it will allow HT and VHT which is a huge gain.

Signed-off-by: Emmanuel Grumbach 
Signed-off-by: Johannes Berg

mac80211: make enable_qos parameter to ieee80211_set_wmm_default()

2015-11-03T09:55:55+00:00

The function currently determines this value, for use in bss_info.qos,
based on the interface type itself. Make it a parameter instead and
set it with the same logic for now.

Signed-off-by: Johannes Berg

mac80211: Fix local deauth while associating

2015-11-03T09:41:00+00:00

Local request to deauthenticate wasn't handled while associating, thus
the association could continue even when the user space required to
disconnect.

Cc: stable@vger.kernel.org
Signed-off-by: Andrei Otcheretianski 
Signed-off-by: Emmanuel Grumbach 
Signed-off-by: Johannes Berg

mac80211: move beacon_loss_count into ifmgd

2015-10-21T08:08:21+00:00

There's little point in keeping (and even sending to userspace)
the beacon_loss_count value per station, since it can only apply
to the AP on a managed-mode connection. Move the value to ifmgd,
advertise it only in managed mode, and remove it from ethtool as
it's available through better interfaces.

Signed-off-by: Johannes Berg

mac80211: remove PM-QoS listener

2015-10-14T16:04:08+00:00

As this API has never really seen any use and most drivers don't
ever use the value derived from it, remove it.

Change the only driver using it (rt2x00) to simply use the DTIM
period instead of the "max sleep" time.

Signed-off-by: Johannes Berg