linux.git/net/wireless/reg.c, branch v3.4

wireless: Save original maximum regulatory transmission power for the calucation of the local maximum transmit power

2012-01-24T19:16:54+00:00

The local maximum transmit power is the maximum power a wireless device
allowed to transmit. If Power Constraint is presented, the local maximum
power equals to the maximum allowed power defined in regulatory domain
minus power constraint.

The maximum transmit power is maximum power a wireless device capable of
transmitting, and should be used in Power Capability element (7.3.2.16
IEEE802.11 2007).

The transmit power from a wireless device should not greater than the
local maximum transmit power.

The maximum transmit power was not calculated correctly in the current
Linux wireless/mac80211 when Power Constraint is presented.

Signed-off-by: Hong Wu 
Signed-off-by: John W. Linville

cfg80211: relicense reg.c reg.h and genregdb.awk to ISC

2012-01-04T19:30:41+00:00

Following the tradition we have had with ath5k, ath9k, CRDA,
wireless-regdb I'd like to license this code under the permissive ISC
license for the code sharing purposes with other OSes, it'd sure be nice
to help the landscape in this area. Although I am %82.89 owner of the
regulatory code I have asked every contributor to the regulatory code
and have receieved positive Acked-bys from everyone except two deceased
entities:

 o Frans Pop RIP 2010 [0]
	- Frans Pop 
	- Frans Pop 
 o Nokia     RIP February, 11, 2011 [1], [2]
	- ext-yuri.ershov@nokia.com
	- kalle.valo@nokia.com

Frans Pop's contribution was a simple patch 55f98938, titled,
"wireless: remove trailing space in messages" which just add a \n
to some printk lines. I'm going to treat these additions as
uncopyrightable.

As for the contributions made by employees on behalf of Nokia
my contact point was Petri Karhula  but
after one month he noted he had not been able to get traction from the
legal department on this request, as such it I proceeded by replacing
their contributions in previous patches.

The end goal is to help a clean rewrite that starts in userspace
that is shared under ISC license which currently is taking place with
the regulatory simulator [3].

[0] http://lists.debian.org/debian-devel/2011/12/msg00263.html
[1] http://press.nokia.com/2011/02/11/nokia-outlines-new-strategy-introduces-new-leadership-operational-structure/
[2] http://NokiaPlanB.com
[3] git://github.com/mcgrof/regsim.git

Acked-by: Thadeu Lima de Souza Cascardo 
Acked-by: Dan Carpenter 
Acked-by: Mihai Moldovan 
Acked-by: Uwe Kleine-König 
Acked-by: Sven Neumann 
Acked-by: Johannes Berg 
Acked-by: Tomas Winkler 
Acked-by: Tony Vroon 
Acked-by: Pavel Roskin 
Acked-by: Bob Copeland 
Acked-by: Lucas De Marchi 
Acked-by: Pat Erley 
Acked-by: Tejun Heo 
Acked-by: John W. Linville 
Acked-by: Chris Wright 
Acked-by: Joe Perches 
Acked-by: Paul Gortmaker 
Acked-by: John Gordon 
Acked-by: Simon Barber 
Acked-by: Rajkumar Manoharan 
Acked-by: Jiri Benc 
Acked-by: Bruno Randolf 
Acked-by: Scott James Remnant 
Acked-by: Roel Kluin 
Signed-off-by: Luis R. Rodriguez 
Signed-off-by: John W. Linville

cfg80211: replace reg.c Nokia commit 269ac5

2012-01-04T19:30:40+00:00

Nokia hasn't gotten back to me in over 1 month for a relicense
change request. There are only a few changes that they contributed,
so just reverting their changes but replacing with another set.
This change replaces this commit:

commit 269ac5fd2d75b118d76a2291e28796527db2f3f8
Author: Kalle Valo 
Date:   Tue Dec 1 10:47:15 2009 +0200

    cfg80211: indent regulatory messages with spaces

    The regulatory messages in syslog look weird:

    kernel: cfg80211: Regulatory domain: US
    kernel: ^I(start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
    kernel: ^I(2402000 KHz - 2472000 KHz @ 40000 KHz), (600 mBi, 2700 mBm)
    kernel: ^I(5170000 KHz - 5190000 KHz @ 40000 KHz), (600 mBi, 2300 mBm)
    kernel: ^I(5190000 KHz - 5210000 KHz @ 40000 KHz), (600 mBi, 2300 mBm)
    kernel: ^I(5210000 KHz - 5230000 KHz @ 40000 KHz), (600 mBi, 2300 mBm)
    kernel: ^I(5230000 KHz - 5330000 KHz @ 40000 KHz), (600 mBi, 2300 mBm)
    kernel: ^I(5735000 KHz - 5835000 KHz @ 40000 KHz), (600 mBi, 3000 mBm)

    Indent them with four spaces instead of the tab character to get prettier
    output.

    Signed-off-by: Kalle Valo 
    Acked: Luis R. Rodriguez 
    Signed-off-by: John W. Linville 

Cc: Petri Karhula 
Signed-off-by: Luis R. Rodriguez 
Signed-off-by: John W. Linville

cfg80211: replace reg.c Nokia commit c4c32294

2012-01-04T19:30:40+00:00

Nokia hasn't gotten back to me in over 1 month for a relicense
change request. There are only a few changes that they contributed,
so just reverting their changes but replacing with another set.
This change replaces this commit:

commit c4c322941ce0d7e2b7b8794ad70683123d9cb26a
Author: Yuri Ershov 
Date:   Tue Jun 29 15:08:08 2010 +0400

    cfg80211: Update of regulatory request initiator handling

    In some cases there could be possible dereferencing freed pointer. The
    update is intended to avoid this issue.

    Signed-off-by: Yuri Ershov 
    Signed-off-by: John W. Linville 

Cc: Petri Karhula 
Signed-off-by: Luis R. Rodriguez 
Signed-off-by: John W. Linville

wireless: Protect regdomain change by mutex

2012-01-04T19:30:39+00:00

Signed-off-by: Dmitry Shmidt 
Signed-off-by: John W. Linville

cfg80211: Restore orig channel values upon disconnect

2011-12-16T14:30:43+00:00

When we restore regulatory settings the world regulatory domain
is properly reset on cfg80211 (or user prefered regulatory domain)
but we were never setting back channel values for drivers that use
WIPHY_FLAG_CUSTOM_REGULATORY. Set these values up again by using
the orig_ channel parameters.

This fixes restoring custom regulatory settings upon disconnect
events.

Cc: compat@orbit-lab.org
Cc: Paul Stewart 
Cc: Rajkumar Manoharan 
Cc: Senthilkumar Balasubramanian 
Signed-off-by: Rajkumar Manoharan 
Signed-off-by: Luis R. Rodriguez 
Signed-off-by: John W. Linville

cfg80211: allow following country IE power for custom regdom cards

2011-12-16T14:30:42+00:00

By definition WIPHY_FLAG_STRICT_REGULATORY was intended to allow the
wiphy to adjust itself to the country IE power information if the
card had no regulatory data but we had no way to tell cfg80211 that if
the card also had its own custom regulatory domain (these are typically
custom world regulatory domains) that we want to follow the country IE's
noted values for power for each channel. We add support for this and
document it.

This is not a critical fix but a performance optimization for cards
with custom regulatory domains that associate to an AP with sends
out country IEs with a higher EIRP than the one on the custom
regulatory domain. In practice the only driver affected right now
are the Atheros drivers as they are the only drivers using both
WIPHY_FLAG_STRICT_REGULATORY and WIPHY_FLAG_CUSTOM_REGULATORY --
used on cards that have an Atheros world regulatory domain. Cards
that have been programmed to follow a country specifically will not
follow the country IE power. So although not a stable fix distributions
should consider cherry picking this.

Cc: compat@orbit-lab.org
Cc: Paul Stewart 
Cc: Rajkumar Manoharan 
Cc: Senthilkumar Balasubramanian 
Reported-by: Rajkumar Manoharan 
Signed-off-by: Luis R. Rodriguez 
Signed-off-by: John W. Linville

cfg80211: notify core hints that helps to restore regd settings

2011-12-13T20:31:04+00:00

Regulatory updates set by CORE are ignored for custom regulatory cards.
Let us notify the changes to the driver, as some drivers uses core hint
to restore its orig_* reg domain setting.

Cc: Paul Stewart 
Signed-off-by: Rajkumar Manoharan 
Acked-by: Luis R. Rodriguez 
Signed-off-by: John W. Linville

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless

2011-12-02T20:44:03+00:00

Conflicts:
	drivers/net/wireless/iwlwifi/iwl-agn.c
	drivers/net/wireless/libertas/cfg.c

cfg80211: amend regulatory NULL dereference fix

2011-11-30T19:16:33+00:00

Johannes' patch for "cfg80211: fix regulatory NULL dereference"
broke user regulaotry hints and it did not address the fact that
last_request was left populated even if the previous regulatory
hint was stale due to the wiphy disappearing.

Fix user reguluatory hints by only bailing out if for those
regulatory hints where a request_wiphy is expected. The stale last_request
considerations are addressed through the previous fixes on last_request
where we reset the last_request to a static world regdom request upon
reset_regdomains(). In this case though we further enhance the effect
by simply restoring reguluatory settings completely.

Cc: stable@vger.kernel.org
Cc: Johannes Berg 
Signed-off-by: Luis R. Rodriguez 
Reviewed-by: Johannes Berg 
Signed-off-by: John W. Linville