From: Johannes Berg <johannes.berg@intel.com>
Date: Thu, 14 Feb 2013 23:48:33 +0000 (+0100)
Subject: cfg80211: comprehensively check station changes
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~65^2~390^2^2~69^2~52
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=77ee7c891a04c3d254711ddf1bde5d7381339fb3;p=pandora-kernel.git

cfg80211: comprehensively check station changes

The station change API isn't being checked properly before
drivers are called, and as a result it is difficult to see
what should be allowed and what not.

In order to comprehensively check the API parameters parse
everything first, and then have the driver call a function
(cfg80211_check_station_change()) with the additionally
information about the kind of station that is being changed;
this allows the function to make better decisions than the
old code could.

While at it, also add a few checks, particularly in mesh
and clarify the TDLS station lifetime in documentation.

To be able to reduce a few checks, ignore any flag set bits
when the mask isn't set, they shouldn't be applied then.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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