291 Commits

Author SHA1 Message Date
Kalle Valo
47d272f0f9 One more pull-request intended for 4.12. These are the changes:
* The firmware for 7265D and 3168 NICs is frozen at version 29;
  * Sari continues working heavily on support for A000 series;
  * A bunch of fixes;
  * Some cleanups here and there;
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Merge tag 'iwlwifi-next-for-kalle-2017-04-26' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next

One more pull-request intended for 4.12.  These are the changes:

 * The firmware for 7265D and 3168 NICs is frozen at version 29;
 * Sari continues working heavily on support for A000 series;
 * A bunch of fixes;
 * Some cleanups here and there;
2017-04-26 14:21:00 +03:00
Sara Sharon
a1a5787730 iwlwifi: rename wait_for_tx_queues_empty
Rename current wait_tx_queue_empty to wait_tx_queues_empty since
it waits for multiple queues (up to 32).
Next patch will add a wait for single TX queue which is needed for
gen2 to be scalable for 512.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2017-04-25 23:04:29 +03:00
Sara Sharon
ced19f2696 iwlwifi: mvm: support station type API
Support change to ADD_STA API to support station types.
Each station is assigned its type.
This simplifies FW handling of the broadcast and multicast
stations:
* broadcast station is identified by its type and not the mac
  address.
* multicast queue is no longer treated differently. The opening
  and closing of it is done by referring to its station.
  There is no need to specify it in the MAC command.
* When disabling TX to all station driver can disable the traffic
  on multicast station, so FW doesn't have to do it.
Change is backward compatible.
Change the order of adding and removing the stations according to
FW requirements.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2017-04-25 23:04:28 +03:00
Sara Sharon
6862fcee2f iwlwifi: mvm: move internally to use bigger INVALID_TXQ
We can't use IEEE80211_INVAL_HW_QUEUE to mark a queue as
invalid since 255 will be a valid value for a TVQM queue
index.
Use IWL_MVM_INVALID_QUEUE instead for accessing txq_id.
reserved_queue can stay a u8 since reserved_queue is not
used when TVQM is enabled.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2017-04-25 22:45:50 +03:00
David S. Miller
ac2291ce1f wireless-drivers-next patches for 4.12
Quite a lot of patches for rtlwifi and iwlwifi this time, but changes
 also for other active wireless drivers.
 
 Major changes:
 
 ath9k
 
 * add support for Dell Wireless 1601 PCI device
 
 * add debugfs file to manually override noise floor
 
 ath10k
 
 * bump up FW API to 6 for a new QCA6174 firmware branch
 
 wil6210
 
 * support 8 kB RX buffers
 
 iwlwifi
 
 * work to support A000 devices continues
 
 * add support for FW API 30
 
 * add Geographical and Dynamic Specific Absorption Rate (SAR) support
 
 * support a few new PCI device IDs
 
 rtlwifi
 
 * work on adding Bluetooth coexistance support, not finished yet
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Merge tag 'wireless-drivers-next-for-davem-2017-04-21' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next

Kalle Valo says:

====================
wireless-drivers-next patches for 4.12

Quite a lot of patches for rtlwifi and iwlwifi this time, but changes
also for other active wireless drivers.

Major changes:

ath9k

* add support for Dell Wireless 1601 PCI device

* add debugfs file to manually override noise floor

ath10k

* bump up FW API to 6 for a new QCA6174 firmware branch

wil6210

* support 8 kB RX buffers

iwlwifi

* work to support A000 devices continues

* add support for FW API 30

* add Geographical and Dynamic Specific Absorption Rate (SAR) support

* support a few new PCI device IDs

rtlwifi

* work on adding Bluetooth coexistance support, not finished yet
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-24 12:25:01 -04:00
Sara Sharon
bc02946964 iwlwifi: mvm: disable RX queue notification for a000 devices
For a000 devices, we don't really have multi RX queue for now,
until we have the RX queue configuration API.
Disable RX queue notification for now.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2017-04-19 22:21:48 +03:00
Sara Sharon
0ae988125d iwlwifi: mvm: prepare for station count change
In a000 devices we will support up to 32 stations.
The max station define is used also for invalid station marking
which makes finding usages of actual maximum station pretty hard
to sort through - change it to be a different define in order
to make future changes easier.
Use also ARRAY_SIZE intead of define when possible.
Do not move yet to 32 stations until firmware do it though.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2017-04-19 22:20:51 +03:00
Kalle Valo
d074e0b84a Patches intended for v4.12:
* Some small fixes here and there;
   * The usual cleanups and small improvements;
   * Work to support A000 devices continues;
   * New FW API version;
   * Some debugging improvements;
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Merge tag 'iwlwifi-next-for-kalle-2017-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next

Patches intended for v4.12:

  * Some small fixes here and there;
  * The usual cleanups and small improvements;
  * Work to support A000 devices continues;
  * New FW API version;
  * Some debugging improvements;
2017-04-18 09:41:45 +03:00
Johannes Berg
fceb6435e8 netlink: pass extended ACK struct to parsing functions
Pass the new extended ACK reporting struct to all of the generic
netlink parsing functions. For now, pass NULL in almost all callers
(except for some in the core.)

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-13 13:58:22 -04:00
Sara Sharon
26d6c16bed iwlwifi: mvm: add multicast station
Currently multicast queue is associated with the broadcast
station.

This raises quite a few issues:

The multicast queue has a special treatment:
- It is sent in the MAC context command
- It is excluded from tfd_queue_mask

In DQA mode we end up enabling two queues - the probe response
queue and the multicast queue - with the same station (broadcast)
and TID while in DQA mode it should be unique RA-TID.
Firmware will enforce it for a000 devices, so this allocation
will fail.

In addition, in a000 devices the FW will set the FIFO and not
the driver. So there is a need for FW to know when we enable
the queue that it is multicast queue so it will be bound to
the multicast FIFO. There is no such way in current design.

In order to simplify driver and firmware handling of this queue
create a multicast station.
This solves the unique RA-TID issue in the short term and serves
as preparation for the long term.

In the long term we will also add a flag marking this station for
the FW as the multicast station.
Once we will do that the FW will know this is the multicast queue
immediately when it is added and bind it to the correct FIFO.
It will also enable removing the special treatment of the
queue in the MAC context command.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2017-04-11 14:54:35 +03:00
Sara Sharon
1c17627bf5 iwlwifi: mvm: cleanup pending frames in DQA mode
When a station is asleep, the fw will set it as "asleep".
All queues that are used only by one station will be stopped by
the fw.

In pre-DQA mode this was relevant for aggregation queues. However,
in DQA mode a queue is owned by one station only, so all queues
will be stopped.
As a result, we don't expect to get filtered frames back to
mac80211 and don't have to maintain the entire pending_frames
state logic, the same way as we do in aggregations.

The correct behavior is to align DQA behavior with the aggregation
queue behaviour pre-DQA:
- Don't count pending frames.
- Let mac80211 know we have frames in these queues so that it can
properly handle trigger frames.

When a trigger frame is received, mac80211 tells the driver to send
frames from the queues using release_buffered_frames.
The driver will tell the fw to let frames out even if the station
is asleep. This is done by iwl_mvm_sta_modify_sleep_tx_count.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2017-04-11 14:54:33 +03:00
Sara Sharon
a956002941 iwlwifi: mvm: fix accessing fw_id_to_mac_id
Access should be by rcu_dereference. Issue was found by sparse.

Fixes: 65e254821cee ("iwlwifi: mvm: use firmware station PM notification for AP_LINK_PS")
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2017-03-24 16:59:46 +02:00
Sara Sharon
9a3fcf912e iwlwifi: mvm: cleanup pending frames in DQA mode
When a station is asleep, the fw will set it as "asleep".
All queues that are used only by one station will be stopped by
the fw.

In pre-DQA mode this was relevant for aggregation queues. However,
in DQA mode a queue is owned by one station only, so all queues
will be stopped.
As a result, we don't expect to get filtered frames back to
mac80211 and don't have to maintain the entire pending_frames
state logic, the same way as we do in aggregations.

The correct behavior is to align DQA behavior with the aggregation
queue behaviour pre-DQA:
- Don't count pending frames.
- Let mac80211 know we have frames in these queues so that it can
properly handle trigger frames.

When a trigger frame is received, mac80211 tells the driver to send
frames from the queues using release_buffered_frames.
The driver will tell the fw to let frames out even if the station
is asleep. This is done by iwl_mvm_sta_modify_sleep_tx_count.

Reported-and-tested-by: Jens Axboe <axboe@kernel.dk>
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2017-03-16 09:53:39 +02:00
Goodstein, Mordechay
735a0045f9 iwlwifi: mvm: avoid race condition in ADD_STA.
The race happens when we send ADD_STA(auth->assoc) -> LQ_CMD
between the commands the FW sometimes loses the medium for AUX, and
sends a ndp to the AP and the flow becomes, ADD_STA -> send ndp -> LQ_CMD
the problem is that there's no rates yet defined for sending the ndp and
FW generates an assert.

The fix: change the order of the commands to LQ_CMD -> ADD_STA

Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2017-02-08 17:54:22 +02:00
Avraham Stern
b45242c99f iwlwifi: mvm: Fix CSA received immediately after association
The session protection set for association is only removed when
BSS_CHANGED_BEACON_INFO is set and BSS_CHANGED_ASSOC is not set.

However, mac80211 may set both on association (in case a beacon was
already received). In this case, mac80211 will not set
BSS_CHANGED_BEACON_INFO on the next beacons because it has already
notified the beacon change, so the session protection is never removed
(until the session protection ends).

When a CSA is received within this time, the station will fail to
folllow the channel switch because it cannot schedule the time event.

Fix this by removing the session protection when
BSS_CHANGED_BEACON_INFO and BSS_CHANGED_ASSOC are both set.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2017-02-08 17:54:22 +02:00
Liad Kaufman
df88c08d5c iwlwifi: mvm: release static queues on bcast release
A few of the static queues are enabled along with the bcast
STA. Make sure they are removed along with it, rather than
waiting for the mac ctxt release.

This is needed because we sometimes have a STA being removed
and then added again (either with the same sta_id or a
different one). If we wait for the mac ctxt release we will
try to allocate the queues again (as this is currently done
in the STA allocation and not in the MAC init) although
they weren't freed, and even if the sta_id of the STA has
changed.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2017-02-06 19:19:23 +02:00
Johannes Berg
6ea29ce574 iwlwifi: mvm: set AID to firmware only for associated stations
The firmware will soon actually look at the AID field, and
when it does that it'll try to ensure that the AID is never
changing. Due to the way the station is added, it may start
with an invalid AID before it's associated, so to ensure a
constant AID (once it becomes non-zero), track the station
state and set the AID only when the station is associated
and when it disassociates.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2017-02-03 16:26:43 +02:00
Sara Sharon
1f37065083 iwlwifi: mvm: support unification of INIT and RT images
For a000 devices the INIT and RT images are unified to one
image.
The changes in the flow are the following:
* Driver load only RT firmware - meaning that the nvm access
  command will be done in the RT image load flow.
* A new command (NVM_ACCESS_COMPLETE) now signals to the FW that
  the driver is done accessing the NVM and FW can proceed with phy
  calibrations.
* Phy DB is no longer sent from INIT FW to be restored by driver
  for the RT FW - all the phy DB is now internal to the FW.
  INIT complete will now follow the NVM access command, without
  phy DB calls before.
* Paging command is sent earlier in the flow before NVM access
  to enable a complete load of FW.
* caution must be care when restart is called since we may have
  not completed init flow even though we are in RT firmware.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2017-02-03 16:26:38 +02:00
Sara Sharon
eef187a7b8 iwlwifi: enlarge number of ucode sections
The maximum number of firmware sections is now 32 instead of 16 for
a000 devices. Set the appropriate define.  Avoid out of bounds access
in case there are more sections than the maximum set by driver.

Make the driver extensible to FW size changes by allocating the
section memory dynamically.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2017-01-26 09:38:57 +02:00
Johannes Berg
371a17ed41 iwlwifi: mvm: expose device timestamp in radiotap
Set the relevant fields to export the 32-bit device timestamp to
radiotap using the new mac80211 infrastructure. This will be useful
to allow synchronising monitor captures taken on different hardware
simultaneously.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2017-01-23 23:36:38 +02:00
David S. Miller
33f8a0458b wireless-drivers-next patches for 4.10
Major changes:
 
 iwlwifi
 
 * finalize and enable dynamic queue allocation
 * use dev_coredumpmsg() to prevent locking the driver
 * small fix to pass the AID to the FW
 * use FW PS decisions with multi-queue
 
 ath9k
 
 * add device tree bindings
 * switch to use mac80211 intermediate software queues to reduce
   latency and fix bufferbloat
 
 wl18xx
 
 * allow scanning in AP mode
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Merge tag 'wireless-drivers-next-for-davem-2016-11-25' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next

Kalle Valo says:

====================
wireless-drivers-next patches for 4.10

Major changes:

iwlwifi

* finalize and enable dynamic queue allocation
* use dev_coredumpmsg() to prevent locking the driver
* small fix to pass the AID to the FW
* use FW PS decisions with multi-queue

ath9k

* add device tree bindings
* switch to use mac80211 intermediate software queues to reduce
  latency and fix bufferbloat

wl18xx

* allow scanning in AP mode
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-27 20:26:59 -05:00
Sara Sharon
8236f7db27 iwlwifi: mvm: assign cab queue to the correct station
Currently when configuring the cab queue the scheduler is configured
without station id - which results in station id 0.
In DQA mode this causes firmware to assert later on when the actual
station 0 is added with an empty tfd_queue_mask.
Fix that by configuring the queue to the broadcast station.
This is a bit trickier since the queue should not be included in the
tfd_queue_mask of the ADD_STA since it is a multicast queue, and the
tfd_queue_mask is only unicast queue. As a result the queue should be
enabled only after the broadcast station is added.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-10-19 12:46:35 +03:00
Johannes Berg
65e254821c iwlwifi: mvm: use firmware station PM notification for AP_LINK_PS
When using RSS on 9000 series devices, we can't rely on processing the
received frames for station powersave handling, since they could be
processed on different CPUs and out of order.

In order to still manage the powersave of stations, the firmware sends
a notification on sleep->wake, wake->sleep and - for U-APSD - frames
received with PM while already sleeping (with the TID.)

With this, the driver can set AP_LINK_PS, which is required for real
parallel RX. In addition, this requires checking for PS-Poll frames
and calling ieee80211_sta_pspoll() appropriately.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-10-19 12:46:32 +03:00
Sara Sharon
3a732c65de iwlwifi: mvm: wake the wait queue when the RX sync counter is zero
When we sync the RX queues the driver waits to receive echo
notification on all the RX queues.
The wait queue is set with timeout until all queues have received
the notification.
However, iwl_mvm_rx_queue_notif() never woke up the wait queue,
with the result of the counter value being checked only when the
timeout expired.
This may cause a latency of up to 1 second.

Fixes: 0636b938214c ("iwlwifi: mvm: implement driver RX queues sync command")
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-10-19 08:50:52 +03:00
Luca Coelho
4b87e5af63 iwlwifi: remove support for fw older than -17 and -22
FW versions older than -17 for 3160 and 7260 and older than -22 for
newer NICs are not supported anymore.  Don't load these versions
and remove code that handles them.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-09-26 23:15:14 +03:00
Avrahams Stern
aacf8f189b iwlwifi: mvm: Add support for RRM by scan
Implement support for RRM by adding an option to configure the scan
dwell time and reporting scan start time and BSS detection time, and
Advertise support for these features.

Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-09-19 10:09:35 +03:00
Aviya Erenfeld
91b08c2da4 iwlwifi: mvm: add support for MU-MIMO air sniffer
enable MU-MIMO air sniffer if it's supported by the NIC

Signed-off-by: Aviya Erenfeld <aviya.erenfeld@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-09-19 09:16:44 +03:00
David S. Miller
e812bd905a wireless-drivers-next patches for 4.9
Major changes:
 
 iwlwifi
 
 * preparation for new a000 HW continues
 * some DQA improvements
 * add support for GMAC
 * add support for 9460, 9270 and 9170 series
 
 mwifiex
 
 * support random MAC address for scanning
 * add HT aggregation support for adhoc mode
 * add custom regulatory domain support
 * add manufacturing mode support via nl80211 testmode interface
 
 bcma
 
 * support BCM53573 series of wireless SoCs
 
 bitfield.h
 
 * add FIELD_PREP() and FIELD_GET() macros
 
 mt7601u
 
 * convert to use the new bitfield.h macros
 
 brcmfmac
 
 * add support for bcm4339 chip with modalias sdio:c00v02D0d4339
 
 ath10k
 
 * add nl80211 testmode support for 10.4 firmware
 * hide kernel addresses from logs using %pK format specifier
 * implement NAPI support
 * enable peer stats by default
 
 ath9k
 
 * use ieee80211_tx_status_noskb where possible
 
 wil6210
 
 * extract firmware capabilities from the firmware file
 
 ath6kl
 
 * enable firmware crash dumps on the AR6004
 
 ath-current is also merged to fix a conflict in ath10k.
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Merge tag 'wireless-drivers-next-for-davem-2016-09-15' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next

Kalle Valo says:

====================
wireless-drivers-next patches for 4.9

Major changes:

iwlwifi

* preparation for new a000 HW continues
* some DQA improvements
* add support for GMAC
* add support for 9460, 9270 and 9170 series

mwifiex

* support random MAC address for scanning
* add HT aggregation support for adhoc mode
* add custom regulatory domain support
* add manufacturing mode support via nl80211 testmode interface

bcma

* support BCM53573 series of wireless SoCs

bitfield.h

* add FIELD_PREP() and FIELD_GET() macros

mt7601u

* convert to use the new bitfield.h macros

brcmfmac

* add support for bcm4339 chip with modalias sdio:c00v02D0d4339

ath10k

* add nl80211 testmode support for 10.4 firmware
* hide kernel addresses from logs using %pK format specifier
* implement NAPI support
* enable peer stats by default

ath9k

* use ieee80211_tx_status_noskb where possible

wil6210

* extract firmware capabilities from the firmware file

ath6kl

* enable firmware crash dumps on the AR6004

ath-current is also merged to fix a conflict in ath10k.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-17 09:53:29 -04:00
Ayala Beker
8e160ab83a iwlwifi: mvm: support GMAC protocol
Add support for installing and removing GMAC key
for newer FW versions that support GCM and MFP.
GMAC provides authentication and integrity for multicast management
frames.

Firmware API was changed, update the driver accordingly.

Signed-off-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-08-29 23:35:06 +03:00
Peer, Ilan
a904a08b5f iwlwifi: mvm: Advertise support for AP channel width change
The iwlmvm driver supports channel width change in AP mode.  Add the
proper flag.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-08-29 22:29:06 +03:00
Kalle Valo
8a185006bc Merge git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers.git
This is to fix some conflicts in iwlwifi.

Conflicts:
	drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
	drivers/net/wireless/intel/iwlwifi/mvm/scan.c
2016-07-10 21:07:29 +03:00
Luca Coelho
55bfa4b9d4 iwlwifi: mvm: support v4 of the TX power command
Add support for the v4 version of the TX power command.  Just add a
new version and do the same sizing tricks that were done when support
for v3 was introduced.

This patch doesn't support the new functionality introduced, but makes
the driver work with the new size of the command.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-07-06 10:30:06 +03:00
Johannes Berg
24ddddf367 iwlwifi: store cipher scheme independent of mac80211
In order to reduce reliance on mac80211 structs in the core
iwlwifi code, store the cipher schemes in the format given
by the firmware and convert it later, rather than storing it
in the mac80211 format.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-07-06 10:08:25 +03:00
Emmanuel Grumbach
3aa4359fe1 iwlwifi: mvm: cleanup the coex code
We removed support for old API for coexistence, but we
forgot to remove defines and variable that are not needed
anymore.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-07-06 02:19:21 +03:00
Sara Sharon
988b59684d iwlwifi: mvm: support new statistics notification
For 9000 family we will get extended statistics notification
with averaged data for RSSI, TCM and rogue AP detection.
Support it. Future patches will added the required algorithms.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-07-06 02:08:57 +03:00
Ayala Beker
2a53d166c4 iwlwifi: mvm: add support for GCMP encryption
Newer hardware supports GCMP and GCMP 256-bit ciphers.
Add support for adding/setting GCMP key for TX mode.

In the TX command handling GCMP-256 is handled in a different
way as the key size should be up to 128-bits:
Set the key value to the key index in the key table,
and specify that this key should be taken form the key table
instead of from the TX command.

While at it - convert security control flags to an enum.

Signed-off-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-07-06 02:07:49 +03:00
Luca Coelho
69e046423a iwlwifi: mvm: change scan timeout to a delayed work
Some transports may sleep when writing to registers, which is done
when calling iwl_force_nmi().  So we can't call iwl_force_nmi() in a
timer context.  To solve that, convert the scan timeout timer to a
delayed work.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-07-06 00:33:07 +03:00
Andrei Otcheretianski
d3a108a48d iwlwifi: mvm: Support CSA countdown offloading
Add support CSA countdown offloading. When CSA starts, the driver
specifies the offsets to the eCSA and CSA IEs in the beacon template
command and the fw performs the countdown.
The fw notifies the driver when the channel switch flow
should be performed.
Beacon sent notifications are not used anymore.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-07-01 18:09:45 +03:00
Avraham Stern
c5241b0c8c iwlwifi: rename CAPA_P2P_STANDALONE_UAPSD to CAPA_P2P_SCM_UAPSD
Ucode capability bit 26 indicates support for UAPSD on P2P interface
even with a simultaneous BSS station interface, as long as both
interfaces are in the same binding. Change the name of the
capability bit to reflect that.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-07-01 18:09:23 +03:00
Johannes Berg
280a3efa82 iwlwifi: mvm: fix a few firmware capability checks
My cleanup in "iwlwifi: prepare for higher API/CAPA bits" accidentally
inverted a few tests - fix them.

Fixes: 859d914c8f5c ("iwlwifi: prepare for higher API/CAPA bits")
Reported-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-06-10 14:20:08 +03:00
Liad Kaufman
cf961e1662 iwlwifi: mvm: support dqa-mode agg on non-shared queue
In non-shared queues, DQA requires re-configuring existing
queues to become aggregated rather than allocating a new
one. It also requires "un-aggregating" an existing queue
when aggregations are turned off.

Support this requirement for non-shared queues.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-05-10 22:34:09 +03:00
Sara Sharon
16c45822a8 iwlwifi: mvm: don't allow negative reference count
Currently code allows mvm reference to become negative and
only warns in case mvm reference is released while reference
counting is 0.
However, we better prevent this from happening at all since
iwl_mvm_unref() may race against iwl_mvm_unref_all_except()
which is called on restart.
As a result we might get the same reference unreferenced twice
ending with a negative value:
An example for an easily reproduced log:
    [ 2689.909166] iwl_mvm_ref Take mvm reference - type 8
    [ 2690.732716] iwl_mvm_unref_all_except Cleanup: remove mvm ref type 8 (1)
    [ 2690.849708] iwl_mvm_unref Leave mvm reference - type 8
    [ 2690.849721] WARNING: ... iwl_mvm_unref+0xb0/0xc0 [iwlmvm]()

If there will be yet another another restart iwl_mvm_unref_all_except
will run from 0 up to ref count, and since it is unsigned, we will throw
the transport ref count completely out of balance:
    iwl_mvm_unref_all_except[I] -- Cleanup: remove mvm ref type 8 (255)
    iwl_trans_slv_unref[I] -- rpm counter: 0
    iwl_trans_slv_unref[I] -- rpm counter: -1
    iwl_trans_slv_unref[I] -- rpm counter: -2
 ...
    iwl_trans_slv_unref[I] -- rpm counter: -253
    iwl_trans_slv_unref[I] -- rpm counter: -254

As there is no valid scenario where we can get to a negative
reference count - prevent it from happening.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-05-10 22:14:52 +03:00
Johannes Berg
80938abc79 iwlwifi: mvm: advertise RSS queue usage
In order for mac80211 to use per-CPU statistics for RSS RX, the
driver needs to advertise that it uses RSS. Do this when using
more than a single queue.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-05-10 22:14:45 +03:00
Sara Sharon
b915c10174 iwlwifi: mvm: add reorder buffer per queue
Next hardware will direct packets to core based on the TCP/UDP
streams.
This logic can create holes in reorder buffer since packets that
belong to other stream were directed to a different core.
However, those are valid holes and the packets can be indicated
in L3 order.

The hardware will utilize a mechanism of informing the driver of
the normalized ssn and the driver shall release all packets that
SN is lower than the nssn.
This enables managing the reorder across the queues without sharing
any data between them.

The reorder buffer is allocated and released directly in the RX path
in order to avoid various races between control path and rx path.
The code utilizes the internal messaging to notify rx queues of when
to delete the reorder buffer.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-05-10 22:14:42 +03:00
Sara Sharon
10b2b2019d iwlwifi: mvm: add infrastructure for tracking BA session in driver
According to the spec when a BA session is started there
is a timeout set for the session in the ADDBA request.
If there is not activity on the TA/TID then the session
expires and a DELBA is sent.
In order to check for the timeout, data must be shared
among the rx queues.
Add a timer that runs as long as BA session is active
for the station and stops aggregation session if needed.
This patch also lays the infrastructure for the reordering
buffer which will be enabled in the next patches.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-05-10 22:14:40 +03:00
Sara Sharon
d0ff5d2297 iwlwifi: mvm: change RX sync notification to be an attribute and not a type
Currently the sync notification is a type of notification. However, it
is better fitted as an attribute of a notification, since there might
be another message in the payload (delba for instance) that should be
sent while control path is waiting for all queues to process.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-05-10 22:14:40 +03:00
Sara Sharon
0636b93821 iwlwifi: mvm: implement driver RX queues sync command
mac80211 will call the driver whenever there is a race between
RSS queues and control path that requires a processing of all
pending frames in RSS queues.
Implement that by utilizing the internal notification mechanism:
queue a message to all queues. When the message is received on
a queue it decrements the atomic counter. This guarantees that
all pending frames in the RX queue were processed since the message
is in order inside the queue.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-05-10 22:14:39 +03:00
Luca Coelho
a525d0eab1 * fix P2P rates (and possibly other issues)
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Merge tag 'iwlwifi-for-kalle-2016-05-04' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-fixes

* fix P2P rates (and possibly other issues)

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2016-05-10 11:56:24 +03:00
Johannes Berg
57fbcce37b cfg80211: remove enum ieee80211_band
This enum is already perfectly aliased to enum nl80211_band, and
the only reason for it is that we get IEEE80211_NUM_BANDS out of
it. There's no really good reason to not declare the number of
bands in nl80211 though, so do that and remove the cfg80211 one.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-12 15:56:15 +02:00
Sara Sharon
5e6a98dc48 iwlwifi: mvm: enable TCP/UDP checksum support for 9000 family
Declare and enable support of RX and TX checksum for 9000 family.
Configure offload_assist in the TX cmd accordingly to support
TX csum.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
2016-03-30 16:24:49 +03:00