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path: root/net/mac80211/mesh.c
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2014-06-23mac80211: move csa counters from sdata to beacon/prespMichal Kazior1-1/+1
Having csa counters part of beacon and probe_resp structures makes it easier to get rid of possible races between setting a beacon and updating counters on SMP systems by guaranteeing counters are always consistent against given beacon struct. While at it relax WARN_ON into WARN_ON_ONCE to prevent spamming logs and racing. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> [remove pointless array check] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-06-23trivial: net/mac80211/mesh.c: fix typo s/Substract/Subtract/Antonio Ospite1-1/+1
Signed-off-by: Antonio Ospite <ao2@ao2.it> Cc: Luis Carlos Cobo <luisca@cozybit.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: linux-wireless@vger.kernel.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-05-15mac80211: Support multiple CSA countersAndrei Otcheretianski1-1/+1
Support up to IEEE80211_MAX_CSA_COUNTERS_NUM csa counters. This is defined to be 2 now, to support both CSA and eCSA counters. 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>
2014-04-22mac80211: fix mesh_add_rsn_ie IE finding loopBob Copeland1-13/+8
Previously, the code to copy the RSN IE from the mesh config would increment its pointer by one in the loop instead of by the element length, so there was the potential for mistaking another IE's data fields as the RSN IE. cfg80211_find_ie() exists, so just use that. Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-04-09cfg80211/mac80211: refactor cfg80211_chandef_dfs_required()Luciano Coelho1-4/+5
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>
2014-04-09mac80211: use RCU_INIT_POINTERMonam Agarwal1-3/+3
rcu_assign_pointer() ensures that the initialization of a structure is carried out before storing a pointer to that structure. However, in the case that NULL is assigned there's no structure to initialize so using RCU_INIT_POINTER instead is safe and more efficient. Signed-off-by: Monam Agarwal <monamagarwal123@gmail.com> [squash eight tiny patches, rewrite commit log] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-02-05mac80211: add missing CSA lockingMichal Kazior1-0/+2
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>
2014-02-05mac80211: batch CSA bss info notificationMichal Kazior1-2/+3
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>
2014-02-05mac80211: use sdata mesh_id_len instead of wdev'sJohannes Berg1-2/+2
Since we copy the mesh_id_len into our own data structures, use it consistently and don't sometimes use cfg80211's copy. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-02-05mac80211: only set CSA beacon when at least one beacon must be transmittedLuciano Coelho1-6/+3
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>
2014-02-05mac80211: align ieee80211_mesh_csa_beacon() with ieee80211_assign_beacon()Luciano Coelho1-3/+1
The return value of ieee80211_mesh_csa_beacon is not aligned with the return value of ieee80211_assign_beacon() and ieee80211_ibss_csa_beacon(). For consistency and to be able to use both functions with similar code, change ieee80211_mesh_csa_beacon() not to send the bss changed notification itself, but return what has changed so the caller can send the notification instead. 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>
2014-02-05mac80211: refactor ieee80211_mesh_process_chanswitch()Luciano Coelho1-55/+19
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>
2014-01-06mac80211: sync dtim_count to TSFThomas Pedersen1-0/+1
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>
2013-12-16mac80211: update adjusting TBTT bit in beaconThomas Pedersen1-0/+5
This regression was introduced in "mac80211: cache mesh beacon". mesh_sync_offset_adjust_tbtt() was assuming that the beacon would be rebuilt in every single pre-tbtt interrupt, but now the beacon update happens on the workqueue, and it must be ready for immediate delivery to the driver. Save a pointer to the meshconf IE in the beacon_data (this works because both the IE pointer and beacon buffer are protected by the same rcu_{dereference,assign_pointer}()) for quick updates during pre-tbtt. This is faster and a little prettier than iterating over the elements to find the meshconf IE every time. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-12-06Merge branch 'master' of ↵John W. Linville1-8/+12
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless Conflicts: drivers/net/wireless/brcm80211/Kconfig net/mac80211/util.c
2013-11-25mac80211: move csa_chandef to sdataLuciano Coelho1-1/+1
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>
2013-11-25mac80211: use put_unaligned_le16 for precedence value in meshChun-Yeow Yeoh1-4/+1
use put_unaligned_le16 for precedence value in mesh channel switch support Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25mac80211: fix the mesh channel switch supportChun-Yeow Yeoh1-8/+12
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>
2013-10-28mac80211: process mesh channel switching using beaconChun-Yeow Yeoh1-9/+130
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 <yeohchunyeow@cozybit.com> [fix locking in ieee80211_mesh_process_chnswitch()] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-10-28{nl,cfg,mac}80211: implement mesh channel switch userspace APIChun-Yeow Yeoh1-0/+98
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>
2013-10-28mac80211: process the CSA frame for mesh accordinglyChun-Yeow Yeoh1-3/+80
Process the CSA frame according to the procedures define in IEEE Std 802.11-2012 section 10.9.8.4.3 as follow: * The mesh channel switch parameters element (MCSP) must be availabe. * If the MCSP's TTL is 1, drop the frame but still process the CSA. * If the MCSP's precedence value is less than or equal to the current precedence value, drop the frame and do not process the CSA. * The CSA frame is forwarded after TTL is decremented by 1 and the initiator field is set to 0. Transmit restrict field and others are maintained as is. * No beacon or probe response frame are handled here. Also, introduce the debug message used for mesh CSA purpose. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-08-23mac80211: only respond to probe request with mesh IDChun-Yeow Yeoh1-0/+3
Previously, the mesh STA responds to probe request from legacy STA but now it will only respond to legacy STA if the legacy STA does include the specific mesh ID or wildcard mesh ID in the probe request. The iw patch "iw: scan using meshid" can be used either by legacy STA or by mesh STA to do active scanning by inserting the mesh ID in the probe request frame. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@cozybit.com> Acked-by: Thomas Pedersen <thomas@cozybit.com> Acked-by: Javier Cardona <javier@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-07-16mac80211: set forwarding in mesh capability infoChun-Yeow Yeoh1-1/+3
Set the Forwarding bit in Mesh Capability Info according to dot11MeshForwarding as defined in IEEE 802.11-2012 section 8.4.2.100.8. Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-07-16mac80211: select and adjust bitrates according to channel modeSimon Wunderlich1-2/+1
The various components accessing the bitrates table must use consider the used channel bandwidth to select only available rates or calculate the bitrate correctly. There are some rates in reduced bandwidth modes which can't be represented as multiples of 500kbps, like 2.25 MBit/s in 5 MHz mode. The standard suggests to round up to the next multiple of 500kbps, just do that in mac80211 as well. Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de> [make rate unsigned in ieee80211_add_tx_radiotap_header(), squash fix] Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2013-06-18mac80211: fix various components for the new 5 and 10 MHz widthsSimon Wunderlich1-1/+3
This is a collection of minor fixes: * don't allow HT IEs in IBSS for 5/10 MHz * don't allow HT IEs in Mesh for 5/10 MHz * don't downgrade from/to 5 and 10 MHz channels * don't try HT rates for 5 and 10 MHz channels when selecting rates 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>
2013-06-18mac80211: update mesh beacon on workqueueThomas Pedersen1-12/+41
Instead of updating the mesh beacon immediately when requested (which would require the sdata_lock()), defer it to the mac80211 workqueue. Fixes yet another deadlock on calling sta_info_flush() with the sdata_lock() held from ieee80211_stop_mesh(). We could just drop the sdata_lock() around the mesh_sta_cleanup() call, but this path is also taken from several non-locked error paths. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> [fix comment position] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-06-11{nl,mac,cfg}80211: Allow user to configure basic rates for meshAshok Nagarajan1-4/+0
Currently mesh uses mandatory rates as the default basic rates. Allow basic rates to be configured during mesh join. Basic rates are applied only if channel is also provided with mesh join command. Signed-off-by: Ashok Nagarajan <ashok@cozybit.com> [some whitespace fixes, refuse basic rates w/o channel] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-06-11mac80211: expire mesh peers based on mesh configurationColleen Twitty1-1/+1
The time it takes to see the peer link expire may differ by a minute since sta_expire() is run once a minute as a mesh housekeeping task. Signed-off-by: Colleen Twitty <colleen@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-06-11mac80211: fix mesh deadlockThomas Pedersen1-12/+17
The patch "cfg80211/mac80211: use cfg80211 wdev mutex in mac80211" introduced several deadlocks by converting the ifmsh->mtx to wdev->mtx. Solve these by: 1. drop the cancel_work_sync() in ieee80211_stop_mesh(). Instead make the mesh work conditional on whether the mesh is running or not. 2. lock the mesh work with sdata_lock() to protect beacon updates and prevent races with wdev->mesh_id_len or cfg80211. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-06-03mac80211: set mesh formation field properlyJacob Minshall1-2/+1
Cap max peerings at 63 in accordance with IEEE-2012 8.4.2.100.7. Triggers a beacon regeneration every time the number of peerings changes. Previously this would only happen if the "accepting peerings" bit changed. Signed-off-by: Jacob Minshall <jacob@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-05-25cfg80211/mac80211: use cfg80211 wdev mutex in mac80211Johannes Berg1-16/+16
Using separate locks in cfg80211 and mac80211 has always caused issues, for example having to unlock in places in mac80211 to call cfg80211, which even needed a framework to make cfg80211 calls after some functions returned etc. Additionally, I suspect some issues people have reported with the cfg80211 state getting confused could be due to such issues, when cfg80211 is asking mac80211 to change state but mac80211 is in the process of telling cfg80211 that the state changed (in another way.) Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-05-25{cfg,mac}80211: move mandatory rates calculation to cfg80211Ashok Nagarajan1-2/+3
Move mandatory rates calculation to cfg80211, shared with non mac80211 drivers. Signed-off-by: Ashok Nagarajan <ashok@cozybit.com> [extend documentation] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-05-17mac80211: enable Auth Protocol Identifier on mesh config.Colleen Twitty1-1/+0
Previously the mesh_auth_id was disabled. Instead set the correct mesh authentication bit based on the mesh setup. Signed-off-by: Colleen Twitty <colleen@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-04-22Merge remote-tracking branch 'wireless-next/master' into mac80211-nextJohannes Berg1-1/+2
2013-04-16mac80211: parse VHT channel switch IEsJohannes Berg1-2/+2
VHT introduces multiple IEs that need to be parsed for a wide bandwidth channel switch. Two are (currently) needed in mac80211: * wide bandwidth channel switch element * channel switch wrapper element The former is contained in the latter for beacons and probe responses, but not for the spectrum management action frames so the IE parser needs a new argument to differentiate them. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-04-10Merge branch 'for-john' of ↵John W. Linville1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next Conflicts: drivers/net/wireless/ath/carl9170/debug.c drivers/net/wireless/ath/carl9170/main.c net/mac80211/ieee80211_i.h
2013-04-08mac80211: check DSSS params IE length in parserJohannes Berg1-1/+1
It's always just one byte, so check for that and remove the length field from the parser struct. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-03-30Merge branch 'master' of ↵John W. Linville1-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless Conflicts: net/mac80211/sta_info.c net/wireless/core.h
2013-03-24mac80211: Don't restart sta-timer if not associated.Ben Greear1-1/+2
I found another crash when deleting lots of virtual stations in a congested environment. I think the problem is that the ieee80211_mlme_notify_scan_completed could call ieee80211_restart_sta_timer for a stopped interface that was about to be deleted. With the following patch I am unable to reproduce the crash. Signed-off-by: Ben Greear <greearb@candelatech.com> [move check, also make the same change in mesh] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-03-11mac80211: remove a few set but unused variablesJohannes Berg1-4/+1
Found by compiling with W=1. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-03-06mac80211: support userspace MPMThomas Pedersen1-1/+1
Earlier mac80211 would check whether some kind of mesh security was enabled, when the real question was "is the MPM in userspace"? Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-03-06mac80211: cleanup suspend/resume on mesh modeStanislaw Gruszka1-55/+2
Remove not used any longer suspend/resume code. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-18mac80211: don't spam mesh probe response messagesThomas Pedersen1-1/+0
If mesh plink debugging is enabled, this gets annoying in a crowded environment, fast. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-15mac80211: clean up mesh codeJohannes Berg1-54/+61
There's various code with strange indentation, questionable loop and locking constructs, etc. The bigger change is moving the "sdata" argument to the first argument of all functions, like all other mac80211 functions that have one. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-15mac80211: generate mesh probe responsesThomas Pedersen1-0/+60
Mesh interfaces will now respond to any broadcast (or matching directed mesh) probe requests with a probe response. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-15mac80211: cache mesh beaconThomas Pedersen1-3/+151
Previously, the entire mesh beacon would be generated each time the beacon timer fired. Instead generate a beacon head and tail (so the TIM can easily be inserted when mesh power save is on) when starting a mesh or the MBSS parameters change. Also add a mutex for protecting beacon updates and preventing leaks. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-15mac80211: consolidate MBSS change notificationThomas Pedersen1-1/+1
A few mesh utility functions will call ieee80211_bss_info_change_notify(), and then the caller might notify the driver of the same change again. Avoid this redundancy by propagating the BSS changes and generally calling bss_info_change_notify() once per change. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-11mac80211: Add the DS Params for mesh to every bandEmanuel Taube1-9/+4
There seems to be no reason, why it has to be limited to 2.4 GHz. Signed-off-by: Emanuel Taube <emanuel.taube@gmail.com> [remove 'local' variable] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-11mac80211: fix mesh sta teardownThomas Pedersen1-0/+25
The patch "mac80211: clean up mesh sta allocation warning" moved some mesh initialization into a path which is only called when the kernel handles peering. This causes a hang when mac80211 tries to clean up a userspace-allocated station entry and delete a timer which has never been initialized. To avoid this, only do any mesh sta peering teardown if the kernel is actually handling it. The same is true when quiescing before suspend. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-02-04mac80211: mesh power save basicsMarco Porsch1-0/+33
Add routines to - maintain a PS mode for each peer and a non-peer PS mode - indicate own PS mode in transmitted frames - track neighbor STAs power modes - buffer frames when neighbors are in PS mode - add TIM and Awake Window IE to beacons - release frames in Mesh Peer Service Periods Add local_pm to sta_info to represent the link-specific power mode at this station towards the remote station. When a peer link is established, use the default power mode stored in mesh config. Update the PS status if the peering status of a neighbor changes. Maintain a mesh power mode for non-peer mesh STAs. Set the non-peer power mode to active mode during peering. Authenticated mesh peering is currently not working when either node is configured to be in power save mode. Indicate the current power mode in transmitted frames. Use QoS Nulls to indicate mesh power mode transitions. For performance reasons, calls to the function setting the frame flags are placed in HWMP routing routines, as there the STA pointer is already available. Add peer_pm to sta_info to represent the peer's link-specific power mode towards the local station. Add nonpeer_pm to represent the peer's power mode towards all non-peer stations. Track power modes based on received frames. Add the ps_data structure to ieee80211_if_mesh (for TIM map, PS neighbor counter and group-addressed frame buffer). Set WLAN_STA_PS flag for STA in PS mode to use the unicast frame buffering routines in the tx path. Update num_sta_ps to buffer and release group-addressed frames after DTIM beacons. Announce the awake window duration in beacons if in light or deep sleep mode towards any peer or non-peer. Create a TIM IE similarly to AP mode and add it to mesh beacons. Parse received Awake Window IEs and check TIM IEs for buffered frames. Release frames towards peers in mesh Peer Service Periods. Use the corresponding trigger frames and monitor the MPSP status. Append a QoS Null as trigger frame if neccessary to properly end the MPSP. Currently, in HT channels MPSPs behave imperfectly and show large delay spikes and frame losses. Signed-off-by: Marco Porsch <marco@cozybit.com> Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com> Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>