linux-toradex.git/net/mac80211/main.c, branch v3.18.21

mac80211: prevent possible crypto tx tailroom corruption

2015-08-04T18:37:08+00:00

[ Upstream commit ab499db80fcf07c18e4053f91a619500f663e90e ]

There was a possible race between
ieee80211_reconfig() and
ieee80211_delayed_tailroom_dec(). This could
result in inability to transmit data if driver
crashed during roaming or rekeying and subsequent
skbs with insufficient tailroom appeared.

This race was probably never seen in the wild
because a device driver would have to crash AND
recover within 0.5s which is very unlikely.

I was able to prove this race exists after
changing the delay to 10s locally and crashing
ath10k via debugfs immediately after GTK
rekeying. In case of ath10k the counter went below
0. This was harmless but other drivers which
actually require tailroom (e.g. for WEP ICV or
MMIC) could end up with the counter at 0 instead
of >0 and introduce insufficient skb tailroom
failures because mac80211 would not resize skbs
appropriately anymore.

Fixes: 8d1f7ecd2af5 ("mac80211: defer tailroom counter manipulation when roaming")
Signed-off-by: Michal Kazior 
Signed-off-by: Johannes Berg 
Signed-off-by: Sasha Levin

mac80211: add Intel Mobile Communications copyright

2014-09-05T11:52:06+00:00

Our legal structure changed at some point (see wikipedia), but
we forgot to immediately switch over to the new copyright
notice.

For files that we have modified in the time since the change,
add the proper copyright notice now.

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

mac80211: introduce refcount for queue_stop_reasons

2014-06-23T12:22:25+00:00

Sometimes different vifs may be stopping the queues for the same
reason (e.g. when several interfaces are performing a channel switch).
Instead of using a bitmask for the reasons, use an integer that holds
a refcount instead.  In order to keep it backwards compatible,
introduce a boolean in some functions that tell us whether the queue
stopping should be refcounted or not.  For now, use not refcounted for
all calls to keep it functionally the same as before.

Signed-off-by: Luciano Coelho 
Signed-off-by: Johannes Berg

mac80211: remove PID rate control

2014-06-23T09:05:23+00:00

Minstrel has long since proven its worth.

Signed-off-by: John W. Linville 
Signed-off-by: Johannes Berg

Merge git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

2014-05-22T17:58:36+00:00

mac80211: Support multiple CSA counters

2014-05-15T13:00:58+00:00

Support up to IEEE80211_MAX_CSA_COUNTERS_NUM csa counters.
This is defined to be 2 now, to support both CSA and eCSA
counters.

Signed-off-by: Andrei Otcheretianski 
Signed-off-by: Luciano Coelho 
Signed-off-by: Johannes Berg

Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

2014-04-30T16:04:27+00:00

Conflicts:
	net/mac80211/chan.c

mac80211: change return value of notifier function

2014-04-25T15:34:25+00:00

Return NOTIFY_DONE if we don't care this time's notification, return
NOTIFY_OK if we successfully handled this time's notification. That's
the formal way to do it.

Signed-off-by: Zhao, Gang 
Signed-off-by: Johannes Berg

mac80211: Allow HT capa override to add 40 MHz intolerant

2014-04-22T15:23:19+00:00

This can be useful for testing purposes to confirm valid AP behavior on
HT 20/40 co-existence functionality.

Signed-off-by: Jouni Malinen 
Signed-off-by: Johannes Berg

mac80211: exclude AP_VLAN interfaces from tx power calculation

2014-04-11T07:37:41+00:00

Their power value is initialized to zero. This patch fixes an issue
where the configured power drops to the minimum value when AP_VLAN
interfaces are created/removed.

Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau 
Signed-off-by: Johannes Berg