linux-toradex.git/net/wireless/reg.c, branch v3.19.6

cfg80211: fix deadlock during reg chan check

2015-01-07T13:53:46+00:00

If a P2P GO is active, the cfg80211_reg_can_beacon function will take
the wdev lock, in its call to cfg80211_go_permissive_chan. But the wdev lock
is already taken by the parent channel-checking function, causing a
deadlock.
Split the checking code into two parts. The first part will check if the
wdev is active and saves the channel under the wdev lock. The second part
will check actual channel validity according to type.

Signed-off-by: Arik Nemtsov 
Reviewed-by: Ilan Peer 
Reviewed-by: Emmanuel Grumbach 
Signed-off-by: Johannes Berg

cfg80211: correctly check ad-hoc channels

2014-12-12T12:40:38+00:00

Ad-hoc requires beaconing for regulatory purposes. Validate that the
channel is valid for beaconing, and not only enabled.

Signed-off-by: Arik Nemtsov 
Reviewed-by: Luis R. Rodriguez 
Signed-off-by: Johannes Berg

cfg80211: don't WARN about two consecutive Country IE hint

2014-12-12T12:29:02+00:00

This can happen and there is no point in added more
detection code lower in the stack. Catching these in one
single point (cfg80211) is enough. Stop WARNING about this
case.

This fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=89001

Cc: stable@vger.kernel.org
Fixes: 2f1c6c572d7b ("cfg80211: process non country IE conflicting first")
Signed-off-by: Emmanuel Grumbach 
Signed-off-by: Johannes Berg

cfg80211: avoid mem leak on driver hint set

2014-12-12T11:25:33+00:00

In the already-set and intersect case of a driver-hint, the previous
wiphy regdomain was not freed before being reset with a copy of the
cfg80211 regdomain.

Cc: stable@vger.kernel.org
Signed-off-by: Arik Nemtsov 
Acked-by: Luis R. Rodriguez 
Signed-off-by: Johannes Berg

cfg80211: leave invalid channels on regdomain change

2014-11-28T13:33:41+00:00

When the regulatory settings change, some channels might become invalid.
Disconnect interfaces acting on these channels, after giving userspace
code a grace period to leave them.

This mode is currently opt-in, and not all interface operating modes are
supported for regulatory-enforcement checks. A wiphy that wishes to use
the new enforcement code must specify an appropriate regulatory flag,
and all its supported interface modes must be supported by the checking
code.

Signed-off-by: Arik Nemtsov 
Reviewed-by: Luis R. Rodriguez 
[fix some indentation, typos]
Signed-off-by: Johannes Berg

cfg80211: explicitly initialize some fields in custom reg path

2014-11-19T17:49:33+00:00

Explicitly initialize the DFS state and beacon found state when handling
channels in the custom regulatory path.

Signed-off-by: Arik Nemtsov 
Acked-by: Luis R. Rodriguez 
Signed-off-by: Johannes Berg

cfg80211: update missing fields in custom regulatory path

2014-11-19T17:49:33+00:00

Some channels fields were not being updated in the custom regulatory
path. Update them according to the code in handle_channel().

Signed-off-by: Jonathan Doron 
Signed-off-by: Arik Nemtsov 
Acked-by: Luis R. Rodriguez 
Signed-off-by: Johannes Berg

cfg80211: introduce regulatory flags controlling bw

2014-11-10T09:36:21+00:00

Allow setting bandwidth related regulatory flags. These flags are mapped
to the corresponding channel flags in the specified range.
Make sure the new flags are consulted when calculating the maximum
bandwidth allowed by a regulatory-rule.

Also allow propagating the GO_CONCURRENT modifier from a reg-rule to a
channel.

Signed-off-by: Arik Nemtsov 
Reviewed-by: Luis R. Rodriguez 
Signed-off-by: Johannes Berg

cfg80211: avoid duplicate entries on regdomain intersection

2014-09-05T11:52:08+00:00

The regdom intersection code simply tries intersecting
each rule of the source with each rule of the target.

Since the resulting intersections are not observed
as a whole, this can result in multiple overlapping/duplicate
entries.

Make the rule addition a bit more smarter, by looking
for rules that can be contained within other rules,
and adding only extended ones.

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

cfg80211: 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