linux-stable.git/net/wireless/core.c, branch v3.7.9

net, wireless: overwrite default_ethtool_ops

2013-02-14T18:48:02+00:00

[ Upstream commit d07d7507bfb4e23735c9b83e397c43e1e8a173e8 ]

Since:

commit 2c60db037034d27f8c636403355d52872da92f81
Author: Eric Dumazet 
Date:   Sun Sep 16 09:17:26 2012 +0000

    net: provide a default dev->ethtool_ops

wireless core does not correctly assign ethtool_ops.

After alloc_netdev*() call, some cfg80211 drivers provide they own
ethtool_ops, but some do not. For them, wireless core provide generic
cfg80211_ethtool_ops, which is assigned in NETDEV_REGISTER notify call:

        if (!dev->ethtool_ops)
                dev->ethtool_ops = &cfg80211_ethtool_ops;

But after Eric's commit, dev->ethtool_ops is no longer NULL (on cfg80211
drivers without custom ethtool_ops), but points to &default_ethtool_ops.

In order to fix the problem, provide function which will overwrite
default_ethtool_ops and use it by wireless core.

Signed-off-by: Stanislaw Gruszka 
Acked-by: Johannes Berg 
Acked-by: Ben Hutchings 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

cfg80211: fix antenna gain handling

2012-10-18T15:18:48+00:00

No driver initializes chan->max_antenna_gain to something sensible, and
the only place where it is being used right now is inside ath9k. This
leads to ath9k potentially using less tx power than it can use, which can
decrease performance/range in some rare cases.

Rather than going through every single driver, this patch initializes
chan->orig_mag in wiphy_register(), ignoring whatever value the driver
left in there. If a driver for some reason wishes to limit it independent
from regulatory rulesets, it can do so internally.

Signed-off-by: Felix Fietkau 
Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem

2012-08-24T16:25:30+00:00

cfg80211: add P2P Device abstraction

2012-08-20T11:58:21+00:00

In order to support using a different MAC address
for the P2P Device address we must first have a
P2P Device abstraction that can be assigned a MAC
address.

This abstraction will also be useful to support
offloading P2P operations to the device, e.g.
periodic listen for discoverability.

Currently, the driver is responsible for assigning
a MAC address to the P2P Device, but this could be
changed by allowing a MAC address to be given to
the NEW_INTERFACE command.

As it has no associated netdev, a P2P Device can
only be identified by its wdev identifier but the
previous patches allowed using the wdev identifier
in various APIs, e.g. remain-on-channel.

Signed-off-by: Johannes Berg

cfg80211: process pending events when unregistering net device

2012-08-06T18:29:58+00:00

libertas currently calls cfg80211_disconnected() when it is being
brought down. This causes an event to be allocated, but since the
wdev is already removed from the rdev by the time that the event
processing work executes, the event is never processed or freed.
http://article.gmane.org/gmane.linux.kernel.wireless.general/95666

Fix this leak, and other possible situations, by processing the event
queue when a device is being unregistered. Thanks to Johannes Berg for
the suggestion.

Signed-off-by: Daniel Drake 
Cc: stable@vger.kernel.org
Reviewed-by: Johannes Berg 
Signed-off-by: John W. Linville

cfg80211: make regulatory_update() static

2012-07-17T10:16:40+00:00

Now that we have wiphy_regulatory_register() we can
tuck away the core's regulatory_update() call there
and make it static.

Signed-off-by: Luis R. Rodriguez 
Signed-off-by: Johannes Berg

cfg80211: rename reg_device_remove() to wiphy_regulatory_deregister()

2012-07-17T10:16:39+00:00

This makes it clearer what we're doing. This now makes a bit
more sense given that regardless of the wiphy if the cell
base station hint feature is supported we will be modifying the
way the regulatory core behaves.

Signed-off-by: Luis R. Rodriguez 
Signed-off-by: Johannes Berg

cfg80211: add cellular base station regulatory hint support

2012-07-17T10:16:39+00:00

Cellular base stations can provide hints to cfg80211 about
where they think we are. This can be done for example on
a cell phone. To enable these hints we simply allow them
through as user regulatory hints but we allow userspace
to clasify the hint as either coming directly from the
user or coming from a cellular base station. This option
is only available when you enable
CONFIG_CFG80211_CERTIFICATION_ONUS.

The base station hints themselves will not be processed
by the core unless at least one device on the system
supports this feature.

Signed-off-by: Luis R. Rodriguez 
Signed-off-by: Johannes Berg

cfg80211: reduce monitor interface tracking

2012-07-13T14:16:11+00:00

Revert commit b78e8ceac23655e1e06b30aa95ab11742d1ac7c0
("cfg80211: track monitor channel") and remove the
set_monitor_enabled() callback.

Due to the tracking happening in NETDEV_PRE_UP, it had
introduced bugs because the monitor interface callback
would be called before the device was started. It looks
like there's no way to fix this, and using NETDEV_PRE_UP
is broken anyway (since there's no NETDEV_UP_FAIL), so
remove all that code, track interfaces in NETDEV_UP and
also stop tracking the monitor channel in cfg80211.

This mostly reverts to before the tracking, except that
we keep the interface count tracking so that setting the
monitor channel can be rejected properly.

Signed-off-by: Johannes Berg

nl80211: move scan API to wdev

2012-07-12T10:10:41+00:00

The new P2P Device will have to be able to scan for
P2P search, so move scanning to use struct wireless_dev
instead of struct net_device.

Signed-off-by: Johannes Berg