Commit Graph

513 Commits

Author SHA1 Message Date
Johannes Berg
4bf332c785 mac80211: remove superfluous band variable
We already have a band variable, so the new one is just
shadowing it, but the existing one already holds the
same value so just remove the inner one.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-02-06 16:50:34 +01:00
Emmanuel Grumbach
1b8d242adb mac80211: move VHT related RX_FLAG to another variable
ieee80211_rx_status.flags is full. Define a new vht_flag
variable to be able to set more VHT related flags and make
room in flags.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Acked-by: Kalle Valo <kvalo@qca.qualcomm.com> [ath10k]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-02-06 09:34:10 +01:00
Marek Kwaczynski
b1bce14a79 mac80211: update opmode when adding new station
Update the operating mode field is needed when an association
request contains the operating mode notification element and
it's not just changed later on the fly.

Signed-off-by: Marek Kwaczynski <marek.kwaczynski@tieto.com>
[clarify commit log, comments & fix whitespace]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-02-05 14:03:23 +01:00
Michal Kazior
dbd72850dc mac80211: add missing CSA locking
The patch adds a missing sdata lock and adds a few
lockdeps for easier maintenance.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-02-04 21:58:11 +01:00
Michal Kazior
cc901de1bc mac80211: fix sdata->radar_required locking
radar_required setting wasn't protected by
local->mtx in some places. This should prevent
from scanning/radar detection/roc colliding.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-02-04 21:58:10 +01:00
Michal Kazior
97518af126 mac80211: fix possible memory leak on AP CSA failure
If CSA for AP interface failed and the interface
was not stopped afterwards another CSA request
would leak sdata->u.ap.next_beacon.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Reviewed-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-02-04 21:58:09 +01:00
Michal Kazior
faf046e723 mac80211: batch CSA bss info notification
Instead of having
ieee80211_bss_info_change_notify() scattered all
over the place just call it once when finalizing
CSA.

As a side effect this patch adds missing error
checking for IBSS CSA beacon update.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Reviewed-by: Luciano Coelho <luciano.coelho@intel.com>
[fix err vs. changed variable usage in ieee80211_csa_finalize()]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-02-04 21:58:09 +01:00
Johannes Berg
8a47cea7d4 mac80211: make cfg80211 ops and privid const
The wiphy privid (to identify wiphys) and the cfg80211
ops should both be const, so change them to be.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-02-04 21:48:21 +01:00
Ilan Peer
2fae062e50 mac80211: Fix ROC duration == 0 handling
In case the given ROC duration is 0, update it to a minimal value before
setting the ieee80211_roc_work parameters, so it also would be valid
for cases where scan is in progress or there are other ROCs queued.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-02-04 21:48:18 +01:00
Johannes Berg
80e207c32b mac80211: mesh: remove mesh_id check
The mesh_id is an array so can't ever be NULL, it looks
like mesh_id_len check was intended instead. However,
since the previous patch, cfg80211 does the check, so
just remove it here.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-02-04 21:48:16 +01:00
Chun-Yeow Yeoh
c782bf8caa mac80211: fix the increment of mesh precedence value
The mesh precedence value in ieee80211_channel_switch
should be incremented or set to 1 only if this is the
initiator of mesh channel switch. For non-initiator,
the precedence value has updated using the Mesh
Channel Switch Parameters element. Fix this.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-02-04 21:48:15 +01:00
Luciano Coelho
66e01cf99e mac80211: only set CSA beacon when at least one beacon must be transmitted
A beacon should never have a Channel Switch Announcement information
element with a count of 0, because a count of 1 means switch just
before the next beacon.  So, if a count of 0 was valid in a beacon, it
would have been transmitted in the next channel already, which is
useless.  A CSA count equal to zero is only meaningful in action
frames or probe_responses.

Fix the ieee80211_csa_is_complete() and ieee80211_update_csa()
functions accordingly.

With a CSA count of 0, we won't transmit any CSA beacons, because the
switch will happen before the next TBTT.  To avoid extra work and
potential confusion in the drivers, complete the CSA immediately,
instead of waiting for the driver to call ieee80211_csa_finish().

To keep things simpler, we also switch immediately when the CSA count
is 1, while in theory we should delay the switch until just before the
next TBTT.

Additionally, move the ieee80211_csa_finish() function to cfg.c,
where it makes more sense.

Tested-by: Simon Wunderlich <sw@simonwunderlich.de>
Acked-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-02-04 21:48:06 +01:00
Luciano Coelho
0cb4d4dceb mac80211: refactor ieee80211_mesh_process_chanswitch()
Refactor ieee80211_mesh_process_chanswitch() to use
ieee80211_channel_switch() and avoid code duplication.

Tested-by: Simon Wunderlich <sw@simonwunderlich.de>
Acked-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-02-04 21:48:05 +01:00
Thomas Pedersen
057d5f4ba1 mac80211: sync dtim_count to TSF
On starting a mesh or AP BSS, the interface dtim_count
countdown should match that of the driver TSF.

Signed-off-by: Thomas Pedersen <twpedersen@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-01-06 20:10:47 +01:00
Johannes Berg
194ff52d42 cfg80211/mac80211: correct qos-map locking
Since the RTNL can't always be held, use wdev/sdata locking for
the qos-map dereference in mac80211. This requires cfg80211 to
consistently lock it, which it was missing in one place.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-30 23:14:03 +01:00
Kyeyoon Park
32db6b54df mac80211: Add support for QoS mapping
Implement set_qos_map() handler for mac80211 to enable QoS mapping
functionality.

Signed-off-by: Kyeyoon Park <kyeyoonp@qca.qualcomm.com>
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-19 16:30:58 +01:00
Johannes Berg
34a3740d6b mac80211: fix iflist_mtx/mtx locking in radar detection
The scan code creates an iflist_mtx -> mtx locking dependency,
and a few other places, notably radar detection, were creating
the opposite dependency, causing lockdep to complain. As scan
and radar detection are mutually exclusive, the deadlock can't
really happen in practice, but it's still bad form.

A similar issue exists in the monitor mode code, but this is
only used by channel-context drivers right now and those have
to have hardware scan, so that also can't happen.

Still, fix these issues by making some of the channel context
code require the mtx to be held rather than acquiring it, thus
allowing the monitor/radar callers to keep the iflist_mtx->mtx
lock ordering.

While at it, also fix access to the local->scanning variable
in the radar code, and document that radar_detect_enabled is
now properly protected by the mtx.

All this would now introduce an ABBA deadlock between the DFS
work cancelling and local->mtx, so change the locking there a
bit to not need to use cancel_delayed_work_sync() but be able
to just use cancel_delayed_work(). The work is also safely
stopped/removed when the interface is stopped, so no extra
changes are needed.

Reported-by: Kalle Valo <kvalo@qca.qualcomm.com>
Tested-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-19 13:33:33 +01:00
Johannes Berg
6924d0138a mac80211: remove unnecessary iflist_mtx locking
The radar detection code changed a few times, and due to
the changes some iflist_mtx locking stayed in that isn't
actually necessary - remove it.

One version of the code needed it because an AP interface's
VLAN list was changed to use this, but then we moved the
list handling outside of the chanctx handling and thus the
locking was no longer needed.

Tested-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-19 13:33:13 +01:00
Max Stepanov
31f1f4ec51 mac80211: read station mgmt keys via get_key call
Allow to read management keys stored in a station's gtk key
array with a get_key function.

Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-16 15:10:18 +01:00
Max Stepanov
354e159d8c mac80211: check pairwise key_idx on get_key call
Verify that a pairwise key index value on ieee80211_get_key call
doesn't exceed the boundaries of the pairwise key array.

Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-16 15:10:10 +01:00
Luciano Coelho
82a8e17d4a mac80211: refactor ieee80211_ibss_process_chanswitch()
Refactor ieee80211_ibss_process_chanswitch() to use
ieee80211_channel_switch() and avoid code duplication.

Tested by: Simon Wunderlich <sw@simonwunderlich.de>
Acked by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-16 15:07:46 +01:00
Luciano Coelho
0ae07968f6 mac80211: make ieee80211_assign_beacon() static
This function is not used anywhere else than in cfg.c, so there's no
need to export it.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-16 13:46:21 +01:00
Johannes Berg
7907c7d33c mac80211: free all AP/VLAN keys at once
When the AP interface is stopped, free all AP and VLAN keys at
once to only require synchronize_net() once. Since that does
synchronize_net(), also move two such calls into the function
(using the new force_synchronize parameter) to avoid doing it
twice.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-16 11:29:48 +01:00
Johannes Berg
e716251d77 mac80211: optimise mixed AP/VLAN station removal
Teach sta_info_flush() to optionally also remove stations
from all VLANs associated with an AP interface to optimise
the station removal (in particular, synchronize_net().)

To not have to add the vlans argument throughout, do some
refactoring.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-16 11:29:47 +01:00
Johannes Berg
d34ba2168a mac80211: don't delay station destruction
If we can assume that stations are never referenced by the
driver after sta_state returns (and this is true since the
previous iwlmvm patch and for all other drivers) then we
don't need to delay station destruction, and don't need to
play tricks with rcu_barrier() etc.

This should speed up some scenarios like hostapd shutdown.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-16 11:29:45 +01:00
Johannes Berg
c4de673b77 Merge remote-tracking branch 'wireless-next/master' into mac80211-next 2013-12-16 11:23:45 +01:00
John W. Linville
e08fd975bf Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
Conflicts:
	drivers/net/wireless/brcm80211/Kconfig
	net/mac80211/util.c
2013-12-06 09:50:45 -05:00
Janusz Dziedzic
d1e33e654e cfg80211: in bitrate_mask, rename mcs to ht_mcs
Rename NL80211_TXRATE_MCS to NL80211_TXRATE_HT and also
rename mcs to ht_mcs in struct cfg80211_bitrate_mask.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
[reword commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-05 16:39:07 +01:00
Simon Wunderlich
1f3b8a2bde mac80211: don't leak next beacon when csa is aborted
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-02 11:51:55 +01:00
Simon Wunderlich
beffd138d3 mac80211: don't cancel csa finalize work within stop_ap
The current channel switch code has a potential deadlock:
1) * cfg80211_stop_ap acquires wdev-lock
   * ieee80211_stop_ap calls cancel_work_sync for the csa_finalize_work,
     which acquires the associated worker-lock
2) * ieee80211_csa_finalize_work holds the worker-lock when run
   * it calls cfg80211_ch_switch_notify which will claim the wdev-lock,
     and also needs to claim the sdata-lock (which is the same as the
     wdev-lock) to modify the beacons.

It is sufficient to just set the channel switch active to false. If the
worker is running later, it will find the channel switch to not be
active anymore and returns immediately without changing anything.

Canceling the worker is done anyway when the interface goes down
(ieee80211_do_stop).

Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-02 11:51:54 +01:00
Simon Wunderlich
e487eaeb07 cfg80211/mac80211/ath6kl: acquire wdev lock outside ch_switch_notify
The channel switch notification should be sent under the
wdev/sdata-lock, preferably in the same moment as the channel change
happens, to avoid races by other callers (e.g. start/stop_ap).
This also adds the previously missing sdata_lock protection in
csa_finalize_work.

Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-02 11:51:54 +01:00
Simon Wunderlich
7ca133bc7f mac80211: modify beacon using sdata/wdev-lock, not rtnl lock
The csa finalize worker needs to change the beacon information (for
different modes). These are normally protected under rtnl lock, but the
csa finalize worker is called by drivers and should not acquire the RTNL
lock. Therefore change access protection for beacons to sdata/wdev lock.

Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
[fix sdata_dereference]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-02 11:51:53 +01:00
Andrei Otcheretianski
b176e62940 cfg80211: aggregate mgmt_tx parameters into a struct
Change cfg80211 and mac80211 to use cfg80211_mgmt_tx_params
struct to aggregate parameters for mgmt_tx functions.
This makes the functions' signatures less clumsy and allows
less painful parameters extension.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
[fix all other drivers]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-02 11:51:52 +01:00
Luciano Coelho
33787fc4be mac80211: move csa_chandef to sdata
There is no reason why we should have only one channel switch
announcement at a time for a single phy.  When support for channel
switch with multiple contexts and multiple vifs per context is
implemented, we will need the chandef data for each vif.  Move the
csa_chandef structure to sdata to prepare for this.

Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
[Fixed compilation with mesh]
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 20:51:58 +01:00
Chun-Yeow Yeoh
6f101ef04b mac80211: use put_unaligned_le16 in mesh_plink_frame_tx
Use put_unaligned_le16 in mesh_plink_frame_tx.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 20:51:53 +01:00
Max Stepanov
2475b1cc0d mac80211: add generic cipher scheme support
This adds generic cipher scheme support to mac80211, such schemes
are fully under control by the driver. On hw registration drivers
may specify additional HW ciphers with a scheme how these ciphers
have to be handled by mac80211 TX/RR. A cipher scheme specifies a
cipher suite value, a size of the security header to be added to
or stripped from frames and how the PN is to be verified on RX.

Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 20:50:52 +01:00
Janusz Dziedzic
d2859df5e7 cfg80211/mac80211: DFS setup chandef for cac event
To report channel width correctly we have
to send correct channel parameters from
mac80211 when calling cfg80211_cac_event().

This is required in case of using channel width
higher than 20MHz and we have to set correct
dfs channel state after CAC (NL80211_DFS_AVAILABLE).

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Reviewed-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 20:50:46 +01:00
Chun-Yeow Yeoh
3f718fd840 mac80211: fix the mesh channel switch support
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 <yeohchunyeow@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 16:50:13 +01:00
Javier Lopez
6c751ef8a1 mac80211: fix for mesh beacon update on powersave
Mesh beacon was not being rebuild after user triggered a mesh
powersave change.

To solve this issue use ieee80211_mbss_info_change_notify instead
of ieee80211_bss_info_change_notify. This helper function forces
mesh beacon to be rebuild and then notifies the driver about the
beacon change.

Signed-off-by: Javier Lopez <jlopex@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 16:50:09 +01:00
Bob Copeland
2d3db21086 Revert "mac80211: allow disable power save in mesh"
This reverts commit ee1f668136.

The aformentioned commit added a check to allow
'iw wlan0 set power_save off' to work for mesh interfaces.

However, this is problematic because it also allows
'iw wlan0 set power_save on', which will crash in short order
because all of the subsequent code manipulates sdata->u.mgd.

The power-saving states for mesh interfaces can be manipulated
through the mesh config, e.g:
'iw wlan0 set mesh_param mesh_power_save=active' (which,
despite the name, actualy disables power saving since the
setting refers to the type of sleep the interface undergoes).

Cc: stable@vger.kernel.org
Fixes: ee1f668136 ("mac80211: allow disable power save in mesh")
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 16:50:00 +01:00
John W. Linville
353c78152c Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Conflicts:
	net/wireless/reg.c
2013-11-05 15:49:02 -05:00
John W. Linville
01925efdf7 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
Conflicts:
	drivers/net/wireless/iwlwifi/pcie/drv.c
2013-11-04 14:45:14 -05:00
Michal Kazior
0951ebb8aa mac80211: fix uninitialized variable
CSA completion could call in a driver
bss_info_changed() with a garbled `changed` flag
leading to all sorts of problems.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-10-28 15:05:31 +01:00
Chun-Yeow Yeoh
b8456a14e9 {nl,cfg,mac}80211: implement mesh channel switch userspace API
Implement the required procedures for mesh channel switching as defined
in the IEEE Std 802.11-2012 section 10.9.8.4.3 and also handle the CSA
and MCSP elements as followed:
 * Add the function for updating the beacon and probe response frames
   with CSA and MCSP elements during the period of switching to the new
   channel. Both CSA and MCSP elements must be included in beacon and
   probe response frames until the intended channel switch time.
 * The ifmsh->csa_settings is set to NULL and the CSA and MCSP elements
   will then be removed from the beacon or probe response frames once the
   new channel is switched to.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-10-28 15:05:30 +01:00
Chun-Yeow Yeoh
c6da674aff {nl,cfg,mac}80211: enable the triggering of CSA frame in mesh
Allow the triggering of CSA frame using mesh interface. The
rules are more or less same with IBSS, such as not allowed to
change between the band and channel width has to be same from
the previous mode. Also, move the ieee80211_send_action_csa
to a common space so that it can be re-used by mesh interface.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-10-28 15:05:29 +01:00
Marco Porsch
446075d76b mac80211: fixes for mesh powersave logic
This patch fixes errors in the mesh powersave logic which
cause that remote peers do not get peer power mode change
notifications and mesh peer service periods (MPSPs) got
stuck.

When closing a peer link, set the (now invalid) peer-specific
power mode to 'unknown'.

Avoid overhead when local power mode is unchanged.

Reliably clear MPSP flags on peering status update.

Avoid MPSP flags getting stuck by not requesting a further
MPSP ownership if we already are an MPSP owner.

Signed-off-by: Marco Porsch <marco@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-10-28 15:05:26 +01:00
Emmanuel Grumbach
687da13223 mac80211: implement SMPS for AP
When the driver requests to move to STATIC or DYNAMIC SMPS,
we send an action frame to each associated station and
reconfigure the channel context / driver.
Of course, non-MIMO stations are ignored.

The beacon isn't updated. The association response will
include the original capabilities. Stations that associate
while in non-OFF SMPS mode will get an action frame right
after association to inform them about our current state.
Note that we wait until the end of the EAPOL. Sending an
action frame before the EAPOL is finished can be an issue
for a few clients. Clients aren't likely to send EAPOL
frames in MIMO anyway.

When the SMPS configuration gets more permissive (e.g.
STATIC -> OFF), we don't wake up stations that are asleep
We remember that they don't know about the change and send
the action frame when they wake up.

When the SMPS configuration gets more restrictive (e.g.
OFF -> STATIC), we set the TIM bit for every sleeping STA.
uAPSD stations might send MIMO until they poll the action
frame, but this is for a short period of time.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
[fix vht streams loop, initialisation]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-10-28 15:05:11 +01:00
Arik Nemtsov
7578d57520 mac80211: implement STA CSA for drivers using channel contexts
Limit the current implementation to a single channel context used by
a single vif, thereby avoiding multi-vif/channel complexities.

Reuse the main function from AP CSA code, but move a portion out in
order to fit the STA scenario.

Add a new mac80211 HW flag so we don't break devices that don't support
channel switch with channel-contexts. The new behavior will be opt-in.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-10-02 18:18:23 +02:00
Felix Fietkau
03bb7f4276 mac80211: use sta_info_get_bss() for nl80211 tx and client probing
This allows calls for clients in AP_VLANs (e.g. for 4-addr) to succeed

Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-09-30 11:30:57 +02:00
Simon Wunderlich
cd7760e62c mac80211: add support for CSA in IBSS mode
This function adds the channel switch announcement implementation for the
IBSS code. It is triggered by userspace (mac80211/cfg) or by external
channel switch announcement, which have to be adopted. Both CSAs in
beacons and action frames are supported. As for AP mode, the channel
switch is applied after some time. However in IBSS mode, the channel
switch IEs are generated in the kernel.

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-09-26 13:27:14 +02:00