linux.git/net/mac80211/pm.c, branch v3.5

mac80211: add explicit monitor interface if needed

2012-04-11T20:23:49+00:00

The queue mapping redesign that I'm planning to do
will break pure injection unless we handle monitor
interfaces explicitly. One possible option would
be to have the driver tell mac80211 about monitor
mode queues etc., but that would duplicate the API
since we already need to have queue assignments
handled per virtual interface.

So in order to solve this, have a virtual monitor
interface that is added whenever all active vifs
are monitors. We could also use the state of one
of the monitor interfaces, but managing that would
be complicated, so allocate separate state.

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

mac80211: use proper sub_if_data on suspend path

2012-02-27T19:06:40+00:00

Use interface data from sta instead of invalid pointer
to list head in calls to drv_sta_state.

Signed-off-by: Jakub Kicinski 
Reviewed-by: Johannes Berg 
Signed-off-by: John W. Linville

mac80211: implement sta_add/sta_remove in sta_state

2012-02-06T19:48:25+00:00

Instead of maintaining separate sta_add/sta_remove
callsites, implement it in sta_state when the driver
has no sta_state implementation.

The only behavioural change this should cause is in
secure mesh mode: with this the station entries will
only be created after the stations are set to AUTH.
Given which drivers support mesh, this seems to not
be a problem.

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

mac80211: add sta_state callback

2012-02-06T19:48:24+00:00

(based on Eliad's patch)

Add a callback to notify the low-level driver whenever
the state of a station changes. The driver is only
notified when the station is actually in the mac80211
hash table, not for pre-insert state transitions.

To allow the driver to replace sta_add/remove calls
with this, call extra transitions with the NOTEXIST
state.

This callback can fail, so we need to be careful in
handling it when a station is inserted, particularly
in the IBSS case where we still keep the station entry
around for mac80211 purposes.

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

mac80211: simplify AP_VLAN handling

2012-02-06T19:48:24+00:00

Setting keys and updating TKIP keys must use the
BSS sdata (not AP_VLAN), so we translate. Move
the translation into driver-ops wrappers instead
of having it inline in the code to simplify the
normal code flow.

The same can be done for sta_add/remove which
already does the translation in the wrapper.

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

mac80211: verify virtual interfaces in driver API

2011-11-09T21:01:02+00:00

The driver is never informed about monitor or
AP_VLAN interfaces, so whenever we pass those
to it later this is a bug. Verify we don't as
there are some cases where this could happen.

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

mac80211: optimise station flags

2011-09-30T19:57:19+00:00

The flaglock in struct sta_info has long been
something that I wanted to get rid of, this
finally does the conversion to atomic bitops.

The conversion itself is straight-forward in
most places, a few things needed to change a
bit since we can no longer use multiple bits
at the same time.

On x86-64, this is a fairly significant code
size reduction:
   text	   data	    bss	    dec	    hex
 427861	  23648	   1008	 452517	  6e7a5	before
 425383	  23648	    976	 450007	  6ddd7	after

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

mac80211: be more careful in suspend/resume

2011-07-15T17:39:42+00:00

When suspending with all netdevs down, the device
is stopped but we still call a number of driver
callbacks that the driver might not expect. The
same happens during resume, we might call a few
callbacks without starting the driver. Fix this
by checking open_count around more things and
exiting quickly if it is 0.

Also, while at this I noticed that the coverage
class isn't reprogrammed after resume, so add
that.

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

mac80211: allow driver to impose WoWLAN restrictions

2011-07-05T19:26:56+00:00

If the driver can't support WoWLAN in the current
state, this patch allows it to return 1 from the
suspend callback to do the normal deconfiguration
instead of using suspend/resume calls. Note that
if it does this, resume won't be called.

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

mac80211: quiesce vif before suspending

2011-06-20T19:34:18+00:00

Cancel all relevant timers/works before suspending (wowlan).

This patch handles the following warning:
WARNING: at net/mac80211/util.c:565 queueing ieee80211 work while going to suspend
Backtrace:
[] (ieee80211_can_queue_work+0x0/0x4c [mac80211])
[] (ieee80211_queue_work+0x0/0x30 [mac80211])
[] (ieee80211_sta_timer+0x0/0x3c [mac80211])
[] (run_timer_softirq+0x0/0x220)
[] (__do_softirq+0x0/0x130)
[] (irq_exit+0x0/0xb4)
[] (ipi_timer+0x0/0x4c)
[] (do_local_timer+0x0/0x88)
[] (cpu_idle+0x0/0xe0)
[] (rest_init+0x0/0xe0)
[] (start_kernel+0x0/0x314)

Signed-off-by: Eliad Peller 
Signed-off-by: John W. Linville