Commit Graph

1517 Commits

Author SHA1 Message Date
Michal Kazior
97dc94f1d9 cfg80211: remove channel_switch combination check
Driver is now responsible for veryfing if the
switch is possible.

Since this is inherently tricky driver may decide
to disconnect an interface later with
cfg80211_stop_iface().

This doesn't mean driver can accept everything. It
should do it's best to verify requests and reject
them as soon as possible.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-06-25 18:06:20 +02:00
Arik Nemtsov
31fa97c5de cfg80211: pass TDLS initiator in tdls_mgmt operations
The TDLS initiator is set once during link setup. If determines the
address ordering in the link identifier IE.

Fix dependent drivers - mwifiex and mac80211.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-06-23 14:24:55 +02:00
Johannes Berg
b7ffbd7ef6 cfg80211: make ethtool the driver's responsibility
Currently, cfg80211 tries to implement ethtool, but that doesn't
really scale well, with all the different operations. Make the
lower-level driver responsible for it, which currently only has
an effect on mac80211. It will similarly not scale well at that
level though, since mac80211 also has many drivers.

To cleanly implement this in mac80211, introduce a new file and
move some code to appropriate places.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-06-23 11:05:33 +02:00
John W. Linville
737be10d8c Merge git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next 2014-05-29 12:55:38 -04:00
chaitanya.mgit@gmail.com
a9fb54169b regdb: Generalize the mW to dBm power conversion
Generalize the power conversion from mW to dBm
using log. This should fix the below compilation
error for country NO which adds a new power value
2000mW which is not handled earlier.

 CC [M]  net/wireless/wext-sme.o
 CC [M]  net/wireless/regdb.o
net/wireless/regdb.c:1130:1: error: Unknown undeclared here (not in
a function)
net/wireless/regdb.c:1130:9: error: expected } before power
make[2]: *** [net/wireless/regdb.o] Error 1
make[1]: *** [net/wireless] Error 2
make: *** [net] Error 2

Reported-By:  John Walker <john@x109.net>
Signed-off-by: Chaitanya T K <chaitanya.mgit@gmail.com>
Acked-by: John W. Linville <linville@tuxdriver.com>
[remove unneeded parentheses, fix rounding by using %.0f]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-05-27 17:58:58 +02:00
Johannes Berg
3bb2055672 cfg80211: send events when devices are added/removed
We're currently sending NEW_WIPHY events for renames (which
is a bit odd, but now can't be changed), but also send them
for really new devices that register.

Also send DEL_WIPHY events when a device is removed, the
event ID for this was already reserved.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-05-26 13:52:25 +02:00
John W. Linville
40a10fd740 Merge git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next 2014-05-22 13:58:36 -04:00
Emmanuel Grumbach
67af981153 cfg80211: allow RSSI compensation
Channels in 2.4GHz band overlap, this means that if we
send a probe request on channel 1 and then move to channel
2, we will hear the probe response on channel 2. In this
case, the RSSI will be lower than if we had heard it on
the channel on which it was sent (1 in this case).

The firmware / low level driver can parse the channel in
the DS IE or HT IE and compensate the RSSI so that it will
still have a valid value even if we heard the frame on an
adjacent channel. This can be done up to a certain offset.

Add this offset as a configuration for the low level driver.
A low level driver that can compensate the low RSSI in this
case should assign the maximal offset for which the RSSI
value is still valid.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-05-22 09:58:49 +02:00
Arik Nemtsov
4d3df547e8 cfg80211: don't set reg timeout for user-handled hint
Otherwise every "indoor" setting by usermode will cause a regdomain reset.

Acked-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-05-21 09:15:18 +02:00
Antonio Quartulli
7406353d43 cfg80211: implement cfg80211_get_station cfg80211 API
Implement and export the new cfg80211_get_station() API.
This utility can be used by other kernel modules to obtain
detailed information about a given wireless station.

It will be in particular useful to batman-adv which will
implement a wireless rate based metric.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-05-21 09:15:17 +02:00
Antonio Quartulli
867d849fc8 cfg80211: export expected throughput through get_station()
Users may need information about the expected throughput
towards a given peer.
This value is supposed to consider the size overhead
generated by the 802.11 header.

This value is exported in kbps through the get_station() API
by including it into the station_info object.
Moreover, it is sent to user space when replying to the
nl80211 GET_STATION command.

This information will be useful to the batman-adv module
which will use it for its new metric computation.

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-05-20 15:13:32 +02:00
Johannes Berg
922bd80fc3 cfg80211: constify wowlan/coalesce mask/pattern pointers
This requires changing the nl80211 parsing code a bit to use
intermediate pointers for the allocation, but clarifies the
API towards the drivers.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-05-19 18:06:50 +02:00
Johannes Berg
c1e5f4714d cfg80211: constify more pointers in the cfg80211 API
This also propagates through the drivers.

The orinoco driver uses the cfg80211 API structs for internal
bookkeeping, and so needs a (void *) cast that removes the
const - but that's OK because it allocates those pointers.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-05-19 17:53:16 +02:00
Andrei Otcheretianski
9a774c78e2 cfg80211: Support multiple CSA counters
Change the type of NL80211_ATTR_CSA_C_OFF_BEACON and
NL80211_ATTR_CSA_C_OFF_PRESP to be NLA_BINARY which allows
userspace to use beacons and probe responses with
multiple CSA counters.
This isn't breaking the API since userspace can
continue to use nla_put_u16 for this attributes, which
is equivalent to a single element u16 array.
In addition advertise max number of supported CSA counters.
This is needed when using CSA and eCSA IEs together.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-05-15 15:00:42 +02:00
Andrei Otcheretianski
34d22ce22b cfg80211: Add API to update CSA counters in mgmt frames
Add NL80211_ATTR_CSA_C_OFFSETS_TX which holds an array
of offsets to the CSA counters which should be updated
when sending a management frames with NL80211_CMD_FRAME.

This API should be used by the drivers that wish to keep the
CSA counter updated in probe responses, but do not implement
probe response offloading and so, do not use
ieee80211_proberesp_get function.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-05-15 14:52:44 +02:00
Luciano Coelho
00ec75fc5a cfg80211: pass the actual iftype when calling cfg80211_chandef_dfs_required()
There is no need to pass NL80211_IFTYPE_UNSPECIFIED when calling
cfg80211_chandef_dfs_required() since we always already have the
interface type.  So, pass the actual interface type instead.

Additionally, have cfg80211_chandef_dfs_required() WARN if the passed
interface type is NL80211_IFTYPE_UNSPECIFIED, so we can detect
problems more easily.

Tested-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Reported-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-05-15 14:50:34 +02:00
Janusz Dziedzic
67ae07a109 cfg80211: fix start_radar_detection issue
After patch:
cfg80211/mac80211: refactor cfg80211_chandef_dfs_required()

start_radar_detection always fail with -EINVAL.

Acked-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-05-14 16:42:22 +02:00
John W. Linville
3231d65ffe Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless 2014-05-13 15:27:44 -04:00
Felix Fietkau
8c48b50a1a cfg80211: allow restricting supported dfs regions
At the moment, the ath9k/ath10k DFS module only supports detecting ETSI
radar patterns.
Add a bitmap in the interface combinations, indicating which DFS regions
are supported by the detector. If unset, support for all regions is
assumed.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-05-13 15:50:06 +02:00
Johannes Berg
f6837ba8c9 mac80211: handle failed restart/resume better
When the driver fails during HW restart or resume, the whole
stack goes into a very confused state with interfaces being
up while the hardware is down etc.

Address this by shutting down everything; we'll run into a
lot of warnings in the process but that's better than having
the whole stack get messed up.

Reviewed-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-05-09 12:21:34 +02:00
Michal Kazior
f04c22033c cfg80211: export interface stopping function
This exports a new cfg80211_stop_iface() function.

This is intended for driver internal interface
combination management and channel switching.

Due to locking issues (it re-enters driver) the
call is asynchronous and uses cfg80211 event
list/worker.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-05-06 15:16:34 +02:00
Eliad Peller
792e6aa7a1 cfg80211: add cfg80211_sched_scan_stopped_rtnl
Add locked-version for cfg80211_sched_scan_stopped.
This is used for some users that might want to
call it when rtnl is already locked.

Fixes: d43c6b6 ("mac80211: reschedule sched scan after HW restart")
Cc: stable@vger.kernel.org (3.14+)
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-05-05 15:14:57 +02:00
Eliad Peller
c1fbb25884 cfg80211: free sme on connection failures
cfg80211 is notified about connection failures by
__cfg80211_connect_result() call. However, this
function currently does not free cfg80211 sme.

This results in hanging connection attempts in some cases

e.g. when mac80211 authentication attempt is denied,
we have this function call:
ieee80211_rx_mgmt_auth() -> cfg80211_rx_mlme_mgmt() ->
cfg80211_process_auth() -> cfg80211_sme_rx_auth() ->
__cfg80211_connect_result()

but cfg80211_sme_free() is never get called.

Fixes: ceca7b712 ("cfg80211: separate internal SME implementation")
Cc: stable@vger.kernel.org (3.10+)
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-05-05 14:59:00 +02:00
Johannes Berg
2fd0511556 cfg80211: remove BUG_ON usage
These really can't trigger unless somebody messes up the code,
but don't make debugging it needlessly complicated, WARN and
return instead of BUG_ON().

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-29 17:59:19 +02:00
Jouni Malinen
e16821bcfb cfg80211: Dynamic channel bandwidth changes in AP mode
This extends NL80211_CMD_SET_CHANNEL to allow dynamic channel bandwidth
changes in AP mode (including P2P GO) during a lifetime of the BSS. This
can be used to implement, e.g., HT 20/40 MHz co-existence rules on the
2.4 GHz band.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-28 18:09:59 +02:00
Rostislav Lisovy
8eca1fb692 cfg80211: Use 5MHz bandwidth by default when checking usable channels
Current code checks if the 20MHz bandwidth is allowed for
particular channel -- if it is not, the channel is disabled.
Since we need to use 5/10 MHz channels, this code is modified in
the way that the default bandwidth to check is 5MHz. If the
maximum bandwidth allowed by the channel is smaller than 5MHz,
the channel is disabled. Otherwise the channel is used and the
flags are set according to the bandwidth allowed by the channel.

Signed-off-by: Rostislav Lisovy <rostislav.lisovy@fel.cvut.cz>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-25 17:39:32 +02:00
Rostislav Lisovy
ea077c1cea cfg80211: Add attributes describing prohibited channel bandwidth
Since there are frequency bands (e.g. 5.9GHz) allowing channels
with only 10 or 5 MHz bandwidth, this patch adds attributes that
allow keeping track about this information.

When channel attributes are reported to user-space, make sure to
not break old tools, i.e. if the 'split wiphy dump' is enabled,
report the extra attributes (if present) describing the bandwidth
restrictions.  If the 'split wiphy dump' is not enabled,
completely omit those channels that have flags set to either
IEEE80211_CHAN_NO_10MHZ or IEEE80211_CHAN_NO_20MHZ.

Add the check for new bandwidth restriction flags in
cfg80211_chandef_usable() to comply with the restrictions.

Signed-off-by: Rostislav Lisovy <rostislav.lisovy@fel.cvut.cz>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-25 17:38:23 +02:00
Zhao, Gang
6784c7db8d cfg80211: change return value of notifier function
Return NOTIFY_DONE if we don't care this time's notification, return
NOTIFY_OK if we successfully handled this time's notification. That's
the formal way to do it.

Signed-off-by: Zhao, Gang <gamerh2o@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-25 17:33:44 +02:00
Zhao, Gang
f26cbf401b cfg80211: change wiphy_to_dev function name
Name wiphy_to_rdev is more accurate to describe what the function
does, i.e., return a pointer pointing to struct
cfg80211_registered_device.

Signed-off-by: Zhao, Gang <gamerh2o@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-25 17:33:04 +02:00
Zhao, Gang
1b8ec87aa0 cfg80211: change registered device pointer name
Name "dev" is too common and ambiguous, let all the pointer name
pointing to struct cfg80211_registered_device be "rdev". This can
improve code readability and consistency(since other places have
already called it rdev).

Signed-off-by: Zhao, Gang <gamerh2o@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-25 17:32:56 +02:00
Michal Kazior
65a124dd71 cfg80211: allow drivers to iterate over matching combinations
The patch splits cfg80211_check_combinations()
into an iterator function and a simple iteration
user.

This makes it possible for drivers to asses how
many channels can use given iftype setup. This in
turn can be used for future
multi-interface/multi-channel channel switching.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-25 17:08:14 +02:00
Ilan Peer
46d537245d cfg80211: Fix GO Concurrent relaxation on UNII-3
At some locations, channels 149-165 are considered a single
bundle, while at some other locations, e.g., Indonesia, channels
149-161 are considered a single bundle, while channel 165 belongs
to a different bundle. This means that:

1. A station interface connection to an AP on channel 165 allows
   the instantiation of a P2P GO on channels 149-165.
2. A station interface connection to an AP on channels 149-161
   does NOT allow the instantiation of a P2P GO on channel 165.

Fix this.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-25 16:47:33 +02:00
Luis R. Rodriguez
96cce12ff6 cfg80211: fix processing world regdomain when non modular
This allows processing of the last regulatory request when
we determine its still pending. Without this if a regulatory
request failed to get processed by userspace we wouldn't
be able to re-process it later. An example situation that can
lead to an unprocessed last_request is enabling cfg80211 to
be built-in to the kernel, not enabling CFG80211_INTERNAL_REGDB
and the CRDA binary not being available at the time the udev
rule that kicks of CRDA triggers.

In such a situation we want to let some cfg80211 triggers
eventually kick CRDA for us again. Without this if the first
cycle attempt to kick off CRDA failed we'd be stuck without
the ability to change process any further regulatory domains.

cfg80211 will trigger re-processing of the regulatory queue
whenever schedule_work(&reg_work) is called, currently this
happens when:

  * suspend / resume
  * disconnect
  * a beacon hint gets triggered (non DFS 5 GHz AP found)
  * a regulatory request gets added to the queue

We don't have any specific opportunistic late boot triggers
to address a late mount of where CRDA resides though, adding
that should be done separately through another patch.
Without an opportunistic fix then this fix relies at least
one of the triggeres above to happen.

Reported-by: Sander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-22 17:17:56 +02:00
Arik Nemtsov
c888393b74 cfg80211: avoid freeing last_request while in flight
Avoid freeing the last request while it is being processed. This can
happen in some cases if reg_work is kicked for some reason while the
currently pending request is in flight.

Cc: Sander Eikelenboom <linux@eikelenboom.it>
Tested-by: Eliad Peller <eliad@wizery.com>
Tested-by: Colleen Twitty <colleen@cozybit.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-22 17:12:55 +02:00
Janusz Dziedzic
4f267c1198 cfg80211: reg: set DFS CAC time in case of custom regd
Set DFS CAC time also in case of using custom
and strict regulatory from drivers. In other case
we could have unset DFS CAC time directly after
driver loaded and before issue regulatory set from
user mode.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-11 10:00:10 +02:00
Johannes Berg
c14a74007f cfg80211: ignore invalid BSSIDs when looking for BSSes
When looking for a BSS matching given parameters, ignore invalid
BSSIDs. This avoids, for example, trying to join an IBSS that has
a multicast BSSID, which isn't supported by all drivers nor is it
a valid configuration of the IBSS so better create a new one with
a correctly chosen random BSSID.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-10 10:09:18 +02:00
Johannes Berg
74f8274103 cfg80211: reject invalid IBSS BSSIDs in wext compat code
Don't allow using a multicast address as the BSSID, that
isn't a valid configuration.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-10 10:09:16 +02:00
Zhao, Gang
96998e3a2f cfg80211: remove unused wiphy argument from cfg80211_wext_freq()
cfg80211_wext_freq() is declared in wext-compat.h, but its
parameter struct wiphy's declaration is not included there.
As the parameter isn't used, just remove it.

Signed-off-by: Zhao, Gang <gamerh2o@gmail.com>
[remove parameter instead of changing to netdev]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-10 10:06:19 +02:00
Michal Kazior
65d26f29ec cfg80211: fix radar_detect combination checking
All bits from radar_detect must match combination
radar bitmask. Otherwise it is theoretically
possible to lead into an invalid combination
provided a driver reports strange combinations.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-09 10:55:58 +02:00
Luciano Coelho
b6a550156b cfg80211/mac80211: move more combination checks to mac80211
Get rid of the cfg80211_can_add_interface() and
cfg80211_can_change_interface() functions by moving that functionality
to mac80211.  With this patch all interface combination checks are now
out of cfg80211 (except for the channel switch case which will be
addressed in a future commit).

Additionally, modify the ieee80211_check_combinations() function so
that an undefined chandef can be passed, in order to use it before a
channel is defined.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-09 10:55:47 +02:00
Luciano Coelho
71965c1d04 cfg80211/mac80211: move combination check to mac80211 for ibss
Now that mac80211 can check the interface combinations itself, move
the combinations check from cfg80211 to mac80211 when joining an IBSS.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-09 10:55:45 +02:00
Luciano Coelho
73de86a389 cfg80211/mac80211: move interface counting for combination check to mac80211
Move the counting part of the interface combination check from
cfg80211 to mac80211.

This is needed to simplify locking when the driver has to perform a
combination check by itself (eg. with channel-switch).

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-09 10:55:43 +02:00
Luciano Coelho
2beb6dab2d cfg80211/mac80211: refactor cfg80211_chandef_dfs_required()
Some interface types don't require DFS (such as STATION, P2P_CLIENT
etc).  In order to centralize these decisions, make
cfg80211_chandef_dfs_required() take the iftype into consideration.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-09 10:55:41 +02:00
Luciano Coelho
cb2d956dd3 cfg80211: refactor cfg80211_can_use_iftype_chan()
Separate the code that counts the interface types and channels from
the code that check the interface combinations.  The new function that
checks for combinations is exported so it can be called by the
drivers.

This is done in preparation for moving the interface combinations
checks out of cfg80211.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-09 10:55:39 +02:00
Ilan Peer
c8866e55a9 cfg80211: Enable GO operation on indoor channels
Allow GO operation on a channel marked with IEEE80211_CHAN_INDOOR_ONLY
iff there is a user hint indicating that the platform is operating in
an indoor environment, i.e., the platform is a printer or media center
device.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-09 10:55:37 +02:00
Ilan Peer
52616f2b44 cfg80211: Add an option to hint indoor operation
Add the option to hint the wireless core that it is operating in an indoor
environment.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-09 10:55:35 +02:00
Ilan Peer
174e0cd28a cfg80211: Enable GO operation on additional channels
Allow GO operation on a channel marked with IEEE80211_CHAN_GO_CONCURRENT
iff there is an active station interface that is associated to
an AP operating on the same channel in the 2 GHz band or the same UNII band
(in the 5 GHz band). This relaxation is not allowed if the channel is
marked with IEEE80211_CHAN_RADAR.

Note that this is a permissive approach to the FCC definitions,
that require a clear assessment that the device operating the AP is
an authorized master, i.e., with radar detection and DFS capabilities.

It is assumed that such restrictions are enforced by user space.
Furthermore, it is assumed, that if the conditions that allowed for
the operation of the GO on such a channel change, i.e., the station
interface disconnected from the AP, it is the responsibility of user
space to evacuate the GO from the channel.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-09 10:55:34 +02:00
Ilan Peer
94fc661f68 cfg80211: Add Kconfig option for cellular BS hints
Move the regulatory cellular base station hints support under
a specific configuration option and make the option depend
on CFG80211_CERTIFICATION_ONUS.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-09 10:55:33 +02:00
David Spinadel
570dbde137 cfg80211: Add indoor only and GO concurrent channel attributes
The FCC are clarifying some soft configuration requirements,
which among other include the following:

1. Indoor operation, where a device can use channels requiring indoor
   operation, subject to that it can guarantee indoor operation,
   i.e., the device is connected to AC Power or the device is under
   the control of a local master that is acting as an AP and is
   connected to AC Power.
2. Concurrent GO operation, where devices may instantiate a P2P GO
   while they are under the guidance of an authorized master. For example,
   on a channel on which a BSS is connected to an authorized master, i.e.,
   with DFS and radar detection capability in the UNII band.

See https://apps.fcc.gov/eas/comments/GetPublishedDocument.html?id=327&tn=528122

Add support for advertising Indoor-only and GO-Concurrent channel
properties.

Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-09 10:55:32 +02:00
Zhao, Gang
babd3a2721 cfg80211: slightly clean up of cfg80211_sme_connect()
Wdev->ssid_len has already been set in cfg80211_connect() and is equal
to connect->ssid_len. Use wdev->ssid_len instead of connect->ssid_len
so it will be consistent with previous ssid assignment statement.

If bss is found in cfg80211_get_conn_bss(), wdev->conn->state is set
to CFG80211_CONN_AUTHENTICATE_NEXT in there. So it's not needed to set
it manually to CFG80211_CONN_AUTHENTICATE_NEXT if bss is found in that
function.

Signed-off-by: Zhao, Gang <gamerh2o@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-09 10:55:31 +02:00