linux-toradex.git/net/mac80211/spectmgmt.c, branch v3.19.2

mac80211: use secondary channel offset IE also beacons during CSA

2014-10-29T15:37:45+00:00

If we are switching from an HT40+ to an HT40- channel (or vice-versa),
we need the secondary channel offset IE to specify what is the
post-CSA offset to be used.  This applies both to beacons and to probe
responses.

In ieee80211_parse_ch_switch_ie() we were ignoring this IE from
beacons and using the *current* HT information IE instead.  This was
causing us to use the same offset as before the switch.

Fix that by using the secondary channel offset IE also for beacons and
don't ever use the pre-switch offset.  Additionally, remove the
"beacon" argument from ieee80211_parse_ch_switch_ie(), since it's not
needed anymore.

Cc: stable@vger.kernel.org
Reported-by: Jouni Malinen 
Signed-off-by: Luciano Coelho 
Signed-off-by: Johannes Berg

mac80211: fix the mesh channel switch support

2013-11-25T15:50:13+00:00

Mesh STA receiving the mesh CSA action frame is not able to trigger
the mesh channel switch due to the incorrect handling and comparison
of mesh channel switch parameters element (MCSP)'s TTL. Make sure
the MCSP's TTL is updated accordingly before calling the
ieee80211_mesh_process_chnswitch. Also, we update the beacon before
forwarding the CSA action frame, so MCSP's precedence value and
initiator flag need to be updated prior to this.

Signed-off-by: Chun-Yeow Yeoh 
Signed-off-by: Johannes Berg

mac80211: process mesh channel switching using beacon

2013-10-28T14:05:30+00:00

Trigger the mesh channel switching procedure if the mesh STA
happens to miss the CSA action frame but able to receive the
beacon containing the CSA and MCSP elements from its peer
mesh STAs.

Signed-off-by: Chun-Yeow Yeoh 
[fix locking in ieee80211_mesh_process_chnswitch()]
Signed-off-by: Johannes Berg

mac80211: refactor the parsing of chan switch ie

2013-10-28T14:05:28+00:00

Refactor the channel switch IE parsing to reduce the number
of function parameters.

Signed-off-by: Chun-Yeow Yeoh 
Signed-off-by: Johannes Berg

mac80211: split off channel switch parsing function

2013-09-26T11:27:13+00:00

The channel switch parsing function can be re-used for the IBSS code,
put the common part into an extra function.

Signed-off-by: Simon Wunderlich 
Signed-off-by: Mathias Kretschmer 
[also move/rename chandef_downgrade]
Signed-off-by: Johannes Berg

mac80211: Remove unnecessary OOM logging messages

2011-09-13T19:45:02+00:00

Removing unnecessary messages saves code and text.

Site specific OOM messages are duplications of a generic MM
out of memory message and aren't really useful, so just
delete them.

Signed-off-by: Joe Perches 
Signed-off-by: John W. Linville

mac80211: reduce reliance on netdev

2009-12-21T23:38:52+00:00

For bluetooth 3, we will most likely not have
a netdev for a virtual interface (sdata), so
prepare for that by reducing the reliance on
having a netdev. This patch moves the name
and address fields into the sdata struct and
uses them from there all over. Some work is
needed to keep them sync'ed, but that's not
a lot of work and in slow paths anyway.

In doing so, this also reduces the number of
pointer dereferences in many places, because
of things like sdata->dev->dev_addr becoming
sdata->vif.addr.

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

mac80211: remove encrypt parameter from ieee80211_tx_skb

2009-11-18T22:09:27+00:00

Since the flags moved into skb->cb, there's no
longer a need to have the encrypt bool passed
into the function, anyone who requires it set
to 0 (false) can just set the flag directly.

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

mac80211: move channel switch code

2009-05-20T18:46:25+00:00

The channel switch code is currently in the spectrum
management file, where arguably it belongs. However,
it is for managed mode only and uses the structures
for that mode only so having it in a more generic
file can be confusing. Additionally, my next patch
gets simpler with the code here.

When/if we ever implement this for IBSS or mesh then
we will need to rework the structures it uses anyway
at which point we could move the code back.

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

cfg80211: clean up includes

2009-04-22T20:57:17+00:00

Trying to separate header files into net/wireless.h and
net/cfg80211.h has been a source of confusion. Remove
net/wireless.h (because there also is the linux/wireless.h)
and subsume everything into net/cfg80211.h -- except the
definitions for regulatory structures which get moved to
a new header net/regulatory.h.

The "new" net/cfg80211.h is now divided into sections.

There are no real changes in this patch but code shuffling
and some very minor documentation fixes.

I have also, to make things reflect reality, put in a
copyright line for Luis to net/regulatory.h since that
is probably exclusively written by him but was formerly
in a file that only had my copyright line.

Signed-off-by: Johannes Berg 
Cc: Luis R. Rodriguez 
Signed-off-by: John W. Linville