cascardo/linux.git
8 years agoiwlwifi: mvm: don't try to offload AES-CMAC in AP/IBSS modes
Johannes Berg [Wed, 9 Mar 2016 13:58:47 +0000 (14:58 +0100)]
iwlwifi: mvm: don't try to offload AES-CMAC in AP/IBSS modes

The firmware/hardware only supports checking AES-CMAC on RX, not
using it on TX. For station mode this is fine, since it's the only
thing it will ever do. For AP mode, it never receives such frames,
but must be able to transmit them. This is currently broken since
we try to enable them for hardware crypto (for RX only) and then
treat them as TX_CMD_SEC_EXT, leading to FIFO underruns during TX
so the frames never go out to the air.

To fix this, simply use software on TX in AP (and IBSS) mode.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: adapt the firmware assert log to new firmware
Emmanuel Grumbach [Mon, 7 Mar 2016 08:16:38 +0000 (10:16 +0200)]
iwlwifi: mvm: adapt the firmware assert log to new firmware

Newer firmware versions put different data in the memory
which is read by the driver upon firmware crash. Just
change the variable names in the code and the name of the
data in the log that we print withouth any functional
change.
On older firmware, there will be a mismatch between the
names that are printed and the content itself, but that's
harmless.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: pcie: avoid restocks inside rx loop if not emergency
Gregory Greenman [Mon, 29 Feb 2016 13:34:25 +0000 (15:34 +0200)]
iwlwifi: pcie: avoid restocks inside rx loop if not emergency

When trying to reach high Rx throughput of more than 500Mbps on
a device with a relatively weak CPU (Atom x5-Z8500), CPU utilization
may become a bottleneck. Analysis showed that we are looping in
iwl_pcie_rx_handle for very long periods which led to starvation
of other threads (iwl_pcie_rx_handle runs with _bh disabled).
We were handling Rx and allocating new buffers and the new buffers
were ready quickly enough to be available before we had finished
handling all the buffers available in the hardware. As a
consequence, we called iwl_pcie_rxq_restock to refill the hardware
with the new buffers, and start again handling new buffers without
exiting the function. Since we read the hardware pointer again when
we goto restart, new buffers were handled immediately instead of
exiting the function.

This patch avoids refilling RBs inside rx handling loop, unless an
emergency situation is reached. It also doesn't read the hardware
pointer again unless we are in an emergency (unlikely) case.
This significantly reduce the maximal time we spend in
iwl_pcie_rx_handle with _bh disabled.

Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: return the cooling state index instead of the budget
Chaya Rachel Ivgi [Sun, 14 Feb 2016 12:03:10 +0000 (14:03 +0200)]
iwlwifi: mvm: return the cooling state index instead of the budget

iwl_mvm_tcool_get_cur_state is the function that returns the
cooling state index to the sysfs handler. This function returns
mvm->cooling_dev.cur_state but that variable was set to the
budget and not the cooling state index. Fix that.
Add a missing blank line while at it.

Signed-off-by: Chaya Rachel Ivgi <chaya.rachel.ivgi@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: remove RRM advertisement
Emmanuel Grumbach [Tue, 8 Mar 2016 11:53:05 +0000 (13:53 +0200)]
iwlwifi: mvm: remove RRM advertisement

mac80211 advertises this feature for all its drivers.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: don't let NDPs mess the packet tracking
Emmanuel Grumbach [Mon, 7 Mar 2016 20:23:52 +0000 (22:23 +0200)]
iwlwifi: mvm: don't let NDPs mess the packet tracking

We need to track the next packet that we will reclaim in
order to know when the Tx queues are empty. This is useful
when we open or tear down an A-MPDU session which requires
to switch queue.
The next packet being reclaimed is identified by its WiFi
sequence number and this is relevant only when we use QoS.
QoS NDPs do have a TID but have a meaningless sequence
number. The spec mandates the receiver to ignore the
sequence number in this case, allowing the transmitter to
put any sequence number. Our implementation leaves it 0.
When we reclaim a QoS NDP, we can't update the next_relcaim
counter since the sequence number of the QoS NDP itself is
invalid.
We used to update the next_reclaim based on the sequence
number of the QoS NDP which reset it to 1 (0 + 1) and
because of this, we never knew when the queue got empty.
This had to sad consequence to stuck the A-MPDU state
machine in a transient state.
To fix this, don't update next_reclaim when we reclaim
a QoS NDP.

Alesya saw this bug when testing u-APSD. Because the
A-MPDU state machine was stuck in EMPTYING_DELBA, we
updated mac80211 that we still have frames for that
station when it got back to sleep. mac80211 then wrongly
set the TIM bit in the beacon and requested to release
non-existent frames from the A-MPDU queue. This led to
a situation where the client was trying to poll frames
but we had no frames to send.

Reported-by: Alesya Shapira <alesya.shapira@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: add support for getting HW address from CSR
Sara Sharon [Mon, 7 Mar 2016 12:18:29 +0000 (14:18 +0200)]
iwlwifi: add support for getting HW address from CSR

From 9000 family on, we need to get HW address from host
CSR registers.
OEM can override it by fusing the override registers - read
those first, and if those are 0 - read the OTP registers instead.

In addition - bail out if no valid mac address is present. Make
it shared for all NICs.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: pcie: fine tune number of rxbs
Sara Sharon [Mon, 1 Feb 2016 11:46:06 +0000 (13:46 +0200)]
iwlwifi: pcie: fine tune number of rxbs

We kick the allocator when we have 2 RBDs that don't have
attached RBs, and the allocator allocates 8 RBs meaning
that it needs another 6 RBDs to attach the RBs to.
The design is that allocator should always have enough RBDs
to fulfill requests, so we give in advance 6 RBDs to the
allocator so that when it is kicked, it gets additional 2 RBDs
and has enough RBDs.
These RBDs were taken from the Rx queue itself, meaning
that each Rx queue didn't have the maximal number of
RBDs, but MAX - 6.
Change initial number of RBDs in the system to include both
queue size and allocator reserves.
Note the multi-queue is always 511 instead of 512 to avoid a
full queue since we cannot detect this state easily enough in
the 9000 arch.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: add support for async rx handler without hold the mutex
Chaya Rachel Ivgi [Thu, 3 Mar 2016 13:35:34 +0000 (15:35 +0200)]
iwlwifi: mvm: add support for async rx handler without hold the mutex

When running async rx handler the framework holds the mvm->mutex
before starting the async handler, that might cause a deadlock in case
the handler calls to ops that lock the mutex as well.
Add support for running async rx handler without hold the mutex before
activating the handler.

Signed-off-by: Chaya Rachel Ivgi <chaya.rachel.ivgi@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: ROC: cleanup time event info on FW failure
Matti Gottlieb [Wed, 9 Mar 2016 12:46:28 +0000 (14:46 +0200)]
iwlwifi: mvm: ROC: cleanup time event info on FW failure

Currently when the FW sends start/stop aux roc time event
notification with an error status, the driver returns an
error value, but does not remove the time event, and does
not notify the stack above that the time event is over.

This causes problems that the stack above assumes we are still
in the middle of a time event, and therefore can block different
events, such as scanning.

On FW failure notification, cleanup the time event parameters and
notify the stack above that the time event is over.

Signed-off-by: Matti Gottlieb <matti.gottlieb@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: turn off AMSDU bit in QoS control for de-aggregated AMSDUs
Sara Sharon [Sun, 6 Mar 2016 07:51:29 +0000 (09:51 +0200)]
iwlwifi: mvm: turn off AMSDU bit in QoS control for de-aggregated AMSDUs

Our hardware de-aggregates AMSDUs but copies the mac header
as it to the de-aggregated MPDUs. We need to turn off the AMSDU
bit in the QoS control ourselves.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: add ctdp operations to debugfs
Chaya Rachel Ivgi [Wed, 24 Feb 2016 10:19:22 +0000 (12:19 +0200)]
iwlwifi: mvm: add ctdp operations to debugfs

Add debugfs entries to get the ctdp budget average
and to stop ctdp.

Signed-off-by: Chaya Rachel Ivgi <chaya.rachel.ivgi@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: extend time event duration
Sara Sharon [Tue, 2 Feb 2016 09:55:53 +0000 (11:55 +0200)]
iwlwifi: mvm: extend time event duration

Before authentication, we start a time event during
which we wait for a beacon in order to sync our timers.
If we didn't hear the beacon during this time - we abandon
the connection. However, in congested environment, it was
observed we might not hear beacons in that time slot.
Extend the time event to give the connection a better chance.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: set the correct amsdu enum values
Sara Sharon [Thu, 3 Mar 2016 14:49:05 +0000 (16:49 +0200)]
iwlwifi: mvm: set the correct amsdu enum values

The amsdu enum values are off by 1 bit. Fix it.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: fix unregistration of thermal in some error flows
Chaya Rachel Ivgi [Thu, 3 Mar 2016 11:31:39 +0000 (13:31 +0200)]
iwlwifi: mvm: fix unregistration of thermal in some error flows

The call to iwl_mvm_thermal_initialize() was too early in the
function.
Unregister will be performed when goto out_unregister is called,
but as the code was - out_free may be called and leave without
unregistering from thermal.

Signed-off-by: Chaya Rachel Ivgi <chaya.rachel.ivgi@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: refactor the code that reads the MAC address from the NVM
Sara Sharon [Tue, 1 Mar 2016 10:18:22 +0000 (12:18 +0200)]
iwlwifi: refactor the code that reads the MAC address from the NVM

It makes it slightly easier to follow. Pass the pointer to
the transport which allows to read WFMP_MAC_ADDR_X register
only when needed and to use IWL_ERR instead of the less
commonly used IWL_ERR_DEV logger macro.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: avoid panics with thermal device usage
Emmanuel Grumbach [Sun, 28 Feb 2016 08:15:08 +0000 (10:15 +0200)]
iwlwifi: mvm: avoid panics with thermal device usage

Thermal zone device registration can fail, and in this case
we don't want to remove WiFi functionality. This is why the
thermal zone registration function is void, and the flows
continue even if the thermal zone device registration failed.
Same applies for the cooling device.

This means that we at least need to remember that the thermal
zone device didn't register properly and take the minimal
precautions to avoid panic'ing when we access it.

This was missing.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: pcie: set RB chunk size back to 64
Sara Sharon [Wed, 2 Mar 2016 13:17:28 +0000 (15:17 +0200)]
iwlwifi: pcie: set RB chunk size back to 64

128 byte chunk size is supported only on PCIe and not
on IOSF. For now, change it back to 64 byte.

Reported-by: Oren Givon <oren.givon@intel.com>
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: pcie: refactor RXBs reclaiming code
Sara Sharon [Mon, 15 Feb 2016 17:30:49 +0000 (19:30 +0200)]
iwlwifi: pcie: refactor RXBs reclaiming code

Change the code to move rxbs directly from the allocator's
list to the queue's free list. This makes the code more
readable, saves the interim array and the double loop over
the free RBs.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: pcie: forbid RTPM on device removal
Luca Coelho [Mon, 8 Feb 2016 09:18:46 +0000 (11:18 +0200)]
iwlwifi: pcie: forbid RTPM on device removal

The pci driver keeps any unbound device in active state and forbids
runtime PM.  When our driver gets probed, we take control of the
state.  When the device is released (i.e. during unbind or module
removal), we should return the state to what it was before.  To do so,
we need to forbid RTPM in the driver remove op.

Additionally, remove an unnecessary pm_runtime_disable() call, move
the initial ref_count setting to a better place and add some comments
explaining what is going on.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoMerge branch 'fixes' into next
Emmanuel Grumbach [Wed, 2 Mar 2016 07:35:38 +0000 (09:35 +0200)]
Merge branch 'fixes' into next

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: support sw queue start/stop from mvm
Liad Kaufman [Wed, 3 Feb 2016 09:05:41 +0000 (11:05 +0200)]
iwlwifi: mvm: support sw queue start/stop from mvm

Add a wrapper function to allow stopping SW queues from MVM
as well.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: take the transport ref back when leaving
Luca Coelho [Tue, 1 Mar 2016 08:30:48 +0000 (10:30 +0200)]
iwlwifi: mvm: take the transport ref back when leaving

If d0i3 is supported, we have released the initial transport reference
in iwl_op_mode_mvm_start(), so we should take it back in
iwl_op_mode_mvm_stop() to keep it balanced.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: add disable_11ac module param
Andrei Otcheretianski [Mon, 29 Feb 2016 11:25:48 +0000 (13:25 +0200)]
iwlwifi: add disable_11ac module param

Add module parameter that disables VHT capabilities.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: only release the trans ref if d0i3 is supported in fw
Luca Coelho [Mon, 22 Feb 2016 13:44:13 +0000 (15:44 +0200)]
iwlwifi: mvm: only release the trans ref if d0i3 is supported in fw

If d0i3 is not supported by the firmware (or if it's disabled via
module parameters) we shouldn't release the initial transport
reference, so that we won't enter runtime suspend.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: disable DQA support
Liad Kaufman [Tue, 23 Feb 2016 14:23:38 +0000 (16:23 +0200)]
iwlwifi: mvm: disable DQA support

Do not allow entrance into DQA flows until feature is
completely ready and merged.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: pcie: detect and workaround invalid write ptr behavior
Sara Sharon [Wed, 24 Feb 2016 12:56:21 +0000 (14:56 +0200)]
iwlwifi: pcie: detect and workaround invalid write ptr behavior

In 9000 series A0 step the closed_rb_num is not wrapping around
properly. The queue is wrapping around as it should, so we can
W/A it by wrapping the closed_rb_num in the driver.
While at it, extend RX logging and add error handling of other
cases HW values may cause us to access invalid memory locations.
Add also a proper masking of vid value read from HW - this should
not have actual affect, but better to be on the safe side.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: update ucode status before stopping device
Chaya Rachel Ivgi [Mon, 22 Feb 2016 08:21:41 +0000 (10:21 +0200)]
iwlwifi: mvm: update ucode status before stopping device

Leaving ucode_loaded to true after stop_device() has been called
is a recipe for problems. Flows that are not sync'ed with the
driver life cycle (like debugfs hooks and thermal hooks) must
check that the firmware is loaded before they interact with it.
Therefore we need to keep this variable updated with the real
status of the firmware.

Signed-off-by: Chaya Rachel Ivgi <chaya.rachel.ivgi@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: support ucode with d0 unified image - regular and usniffer
Golan Ben-Ami [Tue, 23 Feb 2016 08:34:48 +0000 (10:34 +0200)]
iwlwifi: support ucode with d0 unified image - regular and usniffer

Till today, the ucode consisted of two d0 images - regular,
in which the usniffer wasn't enabled, and usniffer, in which the
usniffer logs were enabled.
Lately, the two images were unified, so there is only one d0 image,
in which the usniffer logs are enabled.

Add new TLV capability for supporting the consolidated images
(set 2, bit 13).

Signed-off-by: Golan Ben-Ami <golan.ben.ami@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: Disable beacon storing in D3 when WOWLAN configured
Matti Gottlieb [Thu, 25 Feb 2016 08:18:34 +0000 (10:18 +0200)]
iwlwifi: mvm: Disable beacon storing in  D3 when WOWLAN configured

Currently when entering D3 with WOWLAN configured, we enable in the
configuration flags beacon storing, and do not disable beacon
filtering, and do not wake up from a magic packet.

Having both enabled is wrong (should not have both enabled),
and causes problems in the RX queues in the FW, causing
the FW not to recognize the magic packet when it comes.

Disable beacon storing in wowlan configuration.

Signed-off-by: Matti Gottlieb <matti.gottlieb@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: kill iwl_mvm_enable_agg_txq
Emmanuel Grumbach [Sun, 21 Feb 2016 14:29:17 +0000 (16:29 +0200)]
iwlwifi: mvm: kill iwl_mvm_enable_agg_txq

iwl_mvm_enable_agg_txq has only one user. Kill it and
adapt the call site.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: take care of padded packets
Sara Sharon [Thu, 28 Jan 2016 12:25:33 +0000 (14:25 +0200)]
iwlwifi: mvm: take care of padded packets

To ensure that the SNAP/TCP/IP headers are DW aligned, the firmware
may add 2-byte pad at the end of the mac header - after the IV, before
the SNAP.
In that case the mpdu descriptor pad bit will be turned on.
Driver should take it into consideration, and remove the padding before
passing the packet to mac80211. Do that.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: Send power command on BSS_CHANGED_BEACON_INFO if needed
Avri Altman [Sun, 24 Jan 2016 20:16:08 +0000 (22:16 +0200)]
iwlwifi: mvm: Send power command on BSS_CHANGED_BEACON_INFO if needed

Beacon abort (ba) is set while sending power command, but only
after at least one beacon_filter command was successfully sent.

If we heard a beacon before starting association, this order
is maintained and ba is properly set.

However, if the first beacon is received after association,
we send the power command upon association, configure the
beacon filtering when the first beacon arrives, and in that case,
beacon abort is not set.

So identify this, and send a power command post the beacon_filter
command if needed.

Signed-off-by: Avri Altman <avri.altman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: forbid U-APSD for P2P Client if the firmware doesn't support it
Avri Altman [Wed, 3 Feb 2016 14:28:25 +0000 (16:28 +0200)]
iwlwifi: mvm: forbid U-APSD for P2P Client if the firmware doesn't support it

Older versions of the firmware don't support U-APSD for
P2P Client. Forbid U-APSD for P2P Client when an old
firmware is being used.

Signed-off-by: Avri Altman <avri.altman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: Set global RRM capability
Beni Lev [Wed, 23 Dec 2015 14:39:57 +0000 (17:39 +0300)]
iwlwifi: mvm: Set global RRM capability

Allow to publish RRM capabilities without the need to support a minimal
capability set. Since some RRM features(e.g. neighbor report) are fw
independent, set this capability unconditionally.

Signed-off-by: Beni Lev <beni.lev@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: various trivial cleanups
Emmanuel Grumbach [Thu, 25 Feb 2016 08:19:59 +0000 (10:19 +0200)]
iwlwifi: mvm: various trivial cleanups

* Remove uneeded includes:
iwl-csr.h and devcoredump aren't used in mac80211.c.
* Remove uneeded empty line

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: support VHT MU-MIMO notification
Sara Sharon [Wed, 3 Feb 2016 13:04:49 +0000 (15:04 +0200)]
iwlwifi: mvm: support VHT MU-MIMO notification

When the device is in d0i3/d3 we will not receive the VHT
MU-MIMO group id management frame. Instead, firmware will
notify us upon exit on the current status and we can in turn
update mac80211. Support this notification.
While at it, also check as a precaution that the vif is indeed
the VHT MU-MIMO owner before updating the firmware.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: remove unused field in iwl_mvm_tid_data
Emmanuel Grumbach [Thu, 25 Feb 2016 08:12:36 +0000 (10:12 +0200)]
iwlwifi: mvm: remove unused field in iwl_mvm_tid_data

Commit 69c7fda40921c125eeeef6a827f6270ac6aa1baa removed the
users of iwl_mvm_tid_data.reduced_tpc. Due to a conflict,
I forgot to commit the hunk that removed the field itself.
Do this know.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: add RSS queues notification infrastructure
Sara Sharon [Wed, 16 Dec 2015 16:48:28 +0000 (18:48 +0200)]
iwlwifi: mvm: add RSS queues notification infrastructure

In multi rx queue HW, without execessive locking, there is no sync
between the ctrl path (default queue) and the rest of the rx queues.
This might cause issues on certain situations. For example, in case
a delBA was processed on a default queue but out of order packets
still wait for processing on the other queue.

The solution is to introduce internal messaging between the CTRL path
and the other rx queues.
The driver will send a message to the firmware, which will echo it to
all the requested queues. The message will be in order inside the queue.
This way we can avoid CTRL path and RSS queues races.

Add support for this messaging mechanism. As the firmware is agnostic to
the data sent, add internal representation of the data as well.
Although currently only delBA flow will use it, the internal representation
will enable generic use of this infrastructure for future uses.
Next patch will utilize this messaging mechanism for the reorder buffer
delBA flow.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: add duplicate packet detection per rx queue
Sara Sharon [Mon, 7 Dec 2015 10:50:58 +0000 (12:50 +0200)]
iwlwifi: mvm: add duplicate packet detection per rx queue

Next hardware will direct TCP/UDP streams to different cores.
Packets belonging to the same stream will be directed to the same
core.
The result is that duplicates will be always directed to the same
rx queue were the first packet was received.
This enabled parallelizing the duplicate packet detection across
the different cores, without sharing data between the rx queues.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: pcie: prevent skbs shadowing in iwl_trans_pcie_reclaim
Emmanuel Grumbach [Tue, 23 Feb 2016 09:34:17 +0000 (11:34 +0200)]
iwlwifi: pcie: prevent skbs shadowing in iwl_trans_pcie_reclaim

The patch below introduced a variable shadowing. Fix that.

Fixes: 3955525d5d17 ("iwlwifi: pcie: buffer packets to avoid overflowing Tx queues")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: pcie: add pm_prepare and pm_complete ops
Luca Coelho [Tue, 1 Dec 2015 18:39:57 +0000 (20:39 +0200)]
iwlwifi: pcie: add pm_prepare and pm_complete ops

With these ops, we can know when we are about to enter system suspend.
This allows us to exit D0i3 state before entering suspend.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: pcie: configure more RFH settings
Sara Sharon [Mon, 15 Feb 2016 15:26:48 +0000 (17:26 +0200)]
iwlwifi: pcie: configure more RFH settings

Fine tune RFH registers further:
* Set default queue explicitly
* Set RFH to drop frames exceeding RB size
* Set the maximum rx transfer size to DRAM to 128 instead of 64

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: support filtered frames notification
Sara Sharon [Wed, 22 Jul 2015 08:38:40 +0000 (11:38 +0300)]
iwlwifi: mvm: support filtered frames notification

During d0i3 frames might be filtered by the FW and this may
cause reordering buffer a delay - as the frames will not be
received and reorder will time out.

Introduce an API function to receive notification of filtered
frames and pass the information to the mac80211.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: update rx_status with mactime flag
Sara Sharon [Sun, 10 Jan 2016 12:23:25 +0000 (14:23 +0200)]
iwlwifi: mvm: update rx_status with mactime flag

When forming IBSS, mac80211 scans in order to find an already
existing cell to join.
In case the scan does not find any existing cell a new IBSS
cell is formed.
When receiving the beacons of another IBSS cell we should
merge if the other IBSS cell's TSF is higher than ours.
However, currently iwlmvm does not set any timestamp flag in
rx_status so there is no valid rx timestamp to compare the
beacon's TSF to.
The reason for that is that TSF as indicated by the firmware
is at INA time, but up till now mac80211 expected the TSF at
the beginning or end of the MPDU.
Set the flag to the newly added RX_FLAG_MACTIME_PLCP_START flag.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: support tracing wide commands
Sara Sharon [Mon, 28 Dec 2015 20:37:08 +0000 (22:37 +0200)]
iwlwifi: support tracing wide commands

Current iwlwifi_trace_dev_rx prints only the cmd without the
group, which might be misleading. Change it to print the wide
id. While at it add the DATA_PATH group and sub commands to the
trace of the command names, sine it is missing due to patches
submitted in parallel.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: don't send an A-MSDU that is larger than the TXF
Emmanuel Grumbach [Wed, 11 Nov 2015 09:37:02 +0000 (11:37 +0200)]
iwlwifi: mvm: don't send an A-MSDU that is larger than the TXF

The A-MSDU must be smaller than the Transmit FIFO in the
device. Since the size of the TXF can change depending
on the device / firmware compilation mode, take the size
of the FIFO dynamically from the what the firmware tells us.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: don't enable A-MSDU when the rates are too low
Emmanuel Grumbach [Wed, 28 Oct 2015 07:47:41 +0000 (09:47 +0200)]
iwlwifi: mvm: don't enable A-MSDU when the rates are too low

Allow A-MSDU only when we are not downscaling and the
initial MCS is at least 5.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: allow to limit the A-MSDU from debugfs
Emmanuel Grumbach [Mon, 26 Oct 2015 14:14:06 +0000 (16:14 +0200)]
iwlwifi: mvm: allow to limit the A-MSDU from debugfs

in order to be able to tune the size of the desired A-MSDU
based on link condition, add a knob to modify the length
of the A-MSDU.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: add Tx A-MSDU inside A-MPDU
Emmanuel Grumbach [Mon, 26 Oct 2015 14:00:29 +0000 (16:00 +0200)]
iwlwifi: mvm: add Tx A-MSDU inside A-MPDU

If the peer allows, we can have A-MSDU inside A-MDPU.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: send large SKBs to the transport
Emmanuel Grumbach [Wed, 14 Oct 2015 13:28:52 +0000 (16:28 +0300)]
iwlwifi: mvm: send large SKBs to the transport

Now that PCIe knows how to create A-MSDUs, use this
capability and prepare SKBs that are large enough to
build an A-MSDU.
Advertise TSO support towards the network stack and
segment the packet with gso_size set to be the maximal
A-MSDU length (after having taken the headers to be added
into account) to make sure that the skb that is passed
down to the transport are not longer than the maximal
A-MSDU allowed.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: update firmware of VHT MU-MIMO groups status on restart
Sara Sharon [Sun, 15 Nov 2015 09:11:59 +0000 (11:11 +0200)]
iwlwifi: mvm: update firmware of VHT MU-MIMO groups status on restart

The firmware handles the VHT MU-MIMO group data on its own.
However, on HW restart (and future sniffer mode) the driver
shall update the firmware on the VHT MU-MIMO group membership
status.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: enable VHT MU-MIMO for supported hardware
Sara Sharon [Wed, 27 Jan 2016 16:59:48 +0000 (18:59 +0200)]
iwlwifi: mvm: enable VHT MU-MIMO for supported hardware

Incoming hardware will support VHT MU-MIMO. Declare this
capability for relevant hardware.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: pcie: fix identation in trans.c
Emmanuel Grumbach [Sun, 7 Feb 2016 08:28:13 +0000 (10:28 +0200)]
iwlwifi: pcie: fix identation in trans.c

A curly brace was misplaced, fix this.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: pcie: Add new configuration to enable MSIX
Haim Dreyfuss [Thu, 17 Dec 2015 10:17:58 +0000 (12:17 +0200)]
iwlwifi: pcie: Add new configuration to enable MSIX

Working with MSIX requires prior configuration.
This includes requesting interrupt vectors from the OS,
registering the vectors and mapping the optional causes to the
relevant interrupt. In addition add new interrupt handler
to handle MSIX interrupt.

Signed-off-by: Haim Dreyfuss <haim.dreyfuss@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: pcie: aggregate Flow Handler configuration writes
Emmanuel Grumbach [Sun, 31 Jan 2016 07:29:39 +0000 (09:29 +0200)]
iwlwifi: pcie: aggregate Flow Handler configuration writes

Instead of waking up the device each time we write a
register, wake it up once, and writes the registers
at once.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: bump firmware API to 21
Emmanuel Grumbach [Tue, 23 Feb 2016 19:53:12 +0000 (21:53 +0200)]
iwlwifi: mvm: bump firmware API to 21

The driver is now ready to handle this firmware.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: rs: fix a theoretical access to uninitialized array elements
Eyal Shapira [Mon, 1 Feb 2016 07:07:05 +0000 (09:07 +0200)]
iwlwifi: mvm: rs: fix a theoretical access to uninitialized array elements

Klocwork is unhappy as ht_vht_rates might be accessed with
rate->index being set to values between 0 and 3 which will
lead to accessing uninitialized array elements. Effectively this
doesn't happen as in HT/VHT we're not using these rate indices.
Still fix this.

Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: handle pass all scan reporting
Luca Coelho [Tue, 2 Feb 2016 20:58:46 +0000 (22:58 +0200)]
iwlwifi: mvm: handle pass all scan reporting

The firmware doesn't send match found notifications when no matchsets
are passed.  This makes sense because if there are no matchsets,
nothing can be matched.  But the nl80211 API should report when there
are results available, even if no matchsets were passed.

To handle this, we can use the firmware's ITERATION_COMPLETE
reporting, which will send us notifications every time it completed a
scheduled scan iteration.  Then we can set a flag when we received
beacons and use that to report that results are available.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoMerge tag 'iwlwifi-for-kalle-2016-02-15' into HEAD
Emmanuel Grumbach [Thu, 25 Feb 2016 08:59:41 +0000 (10:59 +0200)]
Merge tag 'iwlwifi-for-kalle-2016-02-15' into HEAD

These are a few fixes for the current cycle.
3 out of the 5 patches fix a bugzilla.

* fix a race that users reported when we try to load the firmware
  and the hardware rfkill interrupt triggers at the same time.
* Luca fixes a very visible bug in scheduled scan: our firmware
  doesn't support scheduled scan with no profile configured and
  the supplicant sometimes requests such scheduled scans.
* build system fix
* firmware name update for 8265
* typo fix in return value

8 years agoiwlwifi: mvm: fix RSS key sizing
Sara Sharon [Sun, 7 Feb 2016 10:50:35 +0000 (12:50 +0200)]
iwlwifi: mvm: fix RSS key sizing

The initialization and copying of the RSS secret key
should not use ARRAY_SIZE as we need to initialize a
dword array, and not a byte array.
Fix also the hook maximum write size to allow writing
a longer table - up to full indirection table size.

Fixes: 43413a975d06("iwlwifi: mvm: support rss queues configuration command")
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: set the correct descriptor size for tracing
Sara Sharon [Sun, 7 Feb 2016 11:09:59 +0000 (13:09 +0200)]
iwlwifi: mvm: set the correct descriptor size for tracing

The 9000 series uses a diffrent sized descriptor. Update the
relevant tracing field.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: add registration to cooling device
Chaya Rachel Ivgi [Tue, 5 Jan 2016 08:34:47 +0000 (10:34 +0200)]
iwlwifi: mvm: add registration to cooling device

Register cooling device in order to have the Thermal
Manager handle the device's power budget according to the sent
notifications.
The interface adds a new thermal cooling device to
/sys/class/thermal/ folder.

Signed-off-by: Chaya Rachel Ivgi <chaya.rachel.ivgi@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: add registration to thermal zone
Chaya Rachel Ivgi [Tue, 29 Dec 2015 07:54:49 +0000 (09:54 +0200)]
iwlwifi: mvm: add registration to thermal zone

Register to thermal_zone interface and implement the
thermal ops.
The thermal handles the device throttling, and sets the
the temperature thresholds the Thermal Manager would be
notified of crossing.
The thermal interface adds a new thermal zone device sensor
under /sys/class/thermal/ folder.

Signed-off-by: Chaya Rachel Ivgi <chaya.rachel.ivgi@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoiwlwifi: mvm: add CT-KILL notification
Chaya Rachel Ivgi [Wed, 16 Dec 2015 14:34:55 +0000 (16:34 +0200)]
iwlwifi: mvm: add CT-KILL notification

Up to today the driver was notified of the temperature from the FW
and decided whether to enter CT-kill or not.
From now on, the FW will decide when to enter CT-kill and will notify
the driver.
Add support for this notification.

Signed-off-by: Chaya Rachel Ivgi <chaya.rachel.ivgi@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
8 years agoMerge tag 'mac80211-next-for-davem-2016-02-26' into next2
Emmanuel Grumbach [Sat, 27 Feb 2016 19:59:03 +0000 (21:59 +0200)]
Merge tag 'mac80211-next-for-davem-2016-02-26' into next2

Here's another round of updates for -next:
 * big A-MSDU RX performance improvement (avoid linearize of paged RX)
 * rfkill changes: cleanups, documentation, platform properties
 * basic PBSS support in cfg80211
 * MU-MIMO action frame processing support
 * BlockAck reordering & duplicate detection offload support
 * various cleanups & little fixes

8 years agorfkill: Add documentation about LED triggers
João Paulo Rechi Vita [Mon, 22 Feb 2016 16:36:37 +0000 (11:36 -0500)]
rfkill: Add documentation about LED triggers

Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agorfkill: Factor rfkill_global_states[].cur assignments
João Paulo Rechi Vita [Mon, 22 Feb 2016 16:36:36 +0000 (11:36 -0500)]
rfkill: Factor rfkill_global_states[].cur assignments

Factor all assignments to rfkill_global_states[].cur into a single
function rfkill_update_global_state().

Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agorfkill: Move "state" sysfs file back to stable
João Paulo Rechi Vita [Mon, 22 Feb 2016 16:36:35 +0000 (11:36 -0500)]
rfkill: Move "state" sysfs file back to stable

There is still quite a bit of code using this interface, so we can't
just remove it. Hopefully it will be possible in the future, but since
its scheduled removal date is past 2 years already, we are better having
the documentation reflecting the current state of things.

Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agorfkill: Point to the correct deprecated doc location
João Paulo Rechi Vita [Mon, 22 Feb 2016 16:36:34 +0000 (11:36 -0500)]
rfkill: Point to the correct deprecated doc location

The "claim" sysfs interface has been removed, so its documentation now
lives in the "removed" folder.

Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agorfkill: Remove extra blank line
João Paulo Rechi Vita [Mon, 22 Feb 2016 16:36:33 +0000 (11:36 -0500)]
rfkill: Remove extra blank line

Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agorfkill: Improve documentation language
João Paulo Rechi Vita [Mon, 22 Feb 2016 16:36:32 +0000 (11:36 -0500)]
rfkill: Improve documentation language

Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agonet: rfkill: gpio: remove rfkill_gpio_platform_data
Heikki Krogerus [Mon, 25 Jan 2016 09:03:49 +0000 (12:03 +0300)]
net: rfkill: gpio: remove rfkill_gpio_platform_data

No more users for it.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agoARM: tegra: use build-in device properties with rfkill_gpio
Heikki Krogerus [Mon, 25 Jan 2016 09:03:48 +0000 (12:03 +0300)]
ARM: tegra: use build-in device properties with rfkill_gpio

Pass the rfkill name and type to the device with properties
instead of driver specific platform data.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
CC: Alexandre Courbot <gnurou@gmail.com>
CC: Thierry Reding <thierry.reding@gmail.com>
CC: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Thierry Reding <treding@nvidia.com>
Tested-by: Marc Dietrich <marvin24@gmx.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agonet: rfkill: gpio: get the name and type from device property
Heikki Krogerus [Mon, 25 Jan 2016 09:03:47 +0000 (12:03 +0300)]
net: rfkill: gpio: get the name and type from device property

This prepares the driver for removal of platform data.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agonet: rfkill: add rfkill_find_type function
Heikki Krogerus [Mon, 25 Jan 2016 09:03:46 +0000 (12:03 +0300)]
net: rfkill: add rfkill_find_type function

Helper for finding the type based on name. Useful if the
type needs to be determined based on device property.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
[modify rfkill_types array and BUILD_BUG_ON to not cause errors]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agocfg80211: add radiotap VHT info to rtap_namespace_sizes
Lorenzo Bianconi [Fri, 19 Feb 2016 10:43:04 +0000 (11:43 +0100)]
cfg80211: add radiotap VHT info to rtap_namespace_sizes

Add IEEE80211_RADIOTAP_VHT entry to rtap_namespace_sizes array in order to
define alignment and size of VHT info in tx radiotap

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agocfg80211: Add global RRM capability
Beni Lev [Wed, 17 Feb 2016 18:30:00 +0000 (20:30 +0200)]
cfg80211: Add global RRM capability

Today, the supplicant will add the RRM capabilities
Information Element in the association request only if
Quiet period is supported (NL80211_FEATURE_QUIET).

Quiet is one of many RRM features, and there are other RRM
features that are not related to Quiet (e.g. neighbor
report). Therefore, requiring Quiet to enable RRM is too
restrictive.
Some of the features, like neighbor report, can be
supported by user space without any help from the kernel.
Hence adding the RRM capabilities IE to association request
should be the sole user space's decision.
Removing the RRM dependency on Quiet in the driver solves
this problem, but using an old driver with a user space
tool that would not require Quiet feature would be
problematic: the user space would add NL80211_ATTR_USE_RRM
in the association request even if the kernel doesn't
advertize NL80211_FEATURE_QUIET and the association would
be denied by the kernel.

This solution adds a global RRM capability, that tells user
space that it can request RRM capabilities IE publishment
without any specific feature support in the kernel.

Signed-off-by: Beni Lev <beni.lev@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agomac80211: move MU_MIMO_OWNER flag to ieee80211_vif
Sara Sharon [Tue, 16 Feb 2016 10:48:18 +0000 (12:48 +0200)]
mac80211: move MU_MIMO_OWNER flag to ieee80211_vif

Drivers may need to track which vif is using VHT MU-MIMO.
Move the flag indicationg the ownership of MU_MIMO to
ieee80211_vif.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agomac80211: provide interface to driver to set VHT MU-MIMO data
Sara Sharon [Tue, 16 Feb 2016 10:48:17 +0000 (12:48 +0200)]
mac80211: provide interface to driver to set VHT MU-MIMO data

Provide an interface to the lower level driver to set the VHT
MU-MIMO data. This is needed for example when there is an update
of the group data during low power state, where the management
frame will not be passed to the host at all.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agomac80211: remove ieee80211_get_key_tx_seq/ieee80211_set_key_tx_seq
Eliad Peller [Mon, 15 Feb 2016 10:34:10 +0000 (12:34 +0200)]
mac80211: remove ieee80211_get_key_tx_seq/ieee80211_set_key_tx_seq

Since the PNs of all the tx keys are now tracked in the public
part of the key struct (with atomic counter), we no longer
need these functions.

dvm and vt665{5,6} are currently the only users of these functions,
so update them accordingly.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agoiwlwifi: mvm: move TX PN assignment for TKIP to the driver
Eliad Peller [Sun, 14 Feb 2016 11:56:36 +0000 (13:56 +0200)]
iwlwifi: mvm: move TX PN assignment for TKIP to the driver

If protocol offloading is configured, the fw might generate some
frames (e.g. arp response) on its own during d3/d0i3.

On d3/d0i3 exit the driver queries the updated PN (if relevant),
and updates its keys (for the d0i3 case, this is done by
iwl_mvm_d0i3_exit_work(), which is scheduled on d0i3 exit)

While in d0i3, iwlmvm defers tx frames until d0i3 exit, and
then continues their processing.

This is problematic with TKIP, since the frame's PN has already
been set at this stage (in contrast to CCMP, where the PN is
being set only later on), so both the frame's PN and the upcoming
PN update (from d0i3 exit work) might be wrong.

Fix it by moving the TX PN assignment (for TKIP) to the driver,
similarly to CCMP.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agomac80211: move TKIP TX IVs to public part of key struct
Eliad Peller [Sun, 14 Feb 2016 11:56:35 +0000 (13:56 +0200)]
mac80211: move TKIP TX IVs to public part of key struct

Some drivers/devices might want to set the IVs by
themselves (and still let mac80211 generate MMIC).

Specifically, this is needed when the device does
offloading at certain times, and the driver has
to make sure that the IVs of new tx frames (from
the host) are synchronized with IVs that were
potentially used during the offloading.

Similarly to CCMP, move the TX IVs of TKIP keys to the
public part of the key struct, and export a function
to add the IV right into the crypto header.

The public tx_pn field is defined as atomic64, so define
TKIP_PN_TO_IV16/32 helper macros to convert it to iv16/32
when needed.

Since the iv32 used for the p1k cache is taken
directly from the frame, we can safely remove
iv16/32 from being protected by tkip.txlock.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agomac80211: fix wiphy supported_band access
Lorenzo Bianconi [Fri, 19 Feb 2016 11:18:01 +0000 (12:18 +0100)]
mac80211: fix wiphy supported_band access

Fix wiphy supported_band access in tx radiotap parsing introduced
in commit 5ec3aed9ba4c ("mac80211: Parse legacy and HT rate in
injected frames"). In particular, info->band is always set to 0
(IEEE80211_BAND_2GHZ) since it has not assigned yet.
This cause a kernel crash on 5GHz only devices.
Move ieee80211_parse_tx_radiotap() after info->band assignment

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agocfg80211: reuse existing page fragments in A-MSDU rx
Felix Fietkau [Mon, 8 Feb 2016 13:34:42 +0000 (14:34 +0100)]
cfg80211: reuse existing page fragments in A-MSDU rx

This massively reduces data copying and thus improves rx performance

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agocfg80211: fix faulty variable initialization in ieee80211_amsdu_to_8023s
Felix Fietkau [Mon, 8 Feb 2016 13:25:26 +0000 (14:25 +0100)]
cfg80211: fix faulty variable initialization in ieee80211_amsdu_to_8023s

reuse_skb is set to true if the code decides to use the last segment.
Fixes a memory leak

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agomac80211: fix VHT MU-MIMO frame processing
Sara Sharon [Wed, 3 Feb 2016 19:52:23 +0000 (21:52 +0200)]
mac80211: fix VHT MU-MIMO frame processing

The source and destintation addresses in the memcpy arguments
are flipped. Fix that.

Fixes: 23a1f8d44c0b("mac80211: process and save VHT MU-MIMO group frame")
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agomac80211: Unify mesh and mpp path removal function
Henning Rogge [Wed, 3 Feb 2016 12:58:38 +0000 (13:58 +0100)]
mac80211: Unify mesh and mpp path removal function

mpp_path_del() and mesh_path_del() are mostly the same function.
Move common code into a new static function.

Acked-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agomac80211: let unused MPP table entries timeout
Henning Rogge [Wed, 3 Feb 2016 12:58:37 +0000 (13:58 +0100)]
mac80211: let unused MPP table entries timeout

Remember the last time when a mpp table entry is used for
rx or tx and remove them after MESH_PATH_EXPIRE time.

Acked-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agomac80211: Remove MPP table entries with MPath
Henning Rogge [Wed, 3 Feb 2016 12:58:36 +0000 (13:58 +0100)]
mac80211: Remove MPP table entries with MPath

Make the mesh_path_del() function remove all mpp table entries
that are proxied by the removed mesh path.

Acked-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Henning Rogge <henning.rogge@fkie.fraunhofer.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agocfg80211: basic support for PBSS network type
Lior David [Thu, 28 Jan 2016 08:58:25 +0000 (10:58 +0200)]
cfg80211: basic support for PBSS network type

PBSS (Personal Basic Service Set) is a new BSS type for DMG
networks. It is similar to infrastructure BSS, having an AP-like
entity called PCP (PBSS Control Point), but it has few differences.
PBSS support is mandatory for 11ad devices.

Add support for PBSS by introducing a new PBSS flag attribute.
The PBSS flag is used in the START_AP command to request starting
a PCP instead of an AP, and in the CONNECT command to request
connecting to a PCP instead of an AP.

Signed-off-by: Lior David <liord@codeaurora.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agocfg80211: add support for non-linear skbs in ieee80211_amsdu_to_8023s
Felix Fietkau [Tue, 2 Feb 2016 13:39:10 +0000 (14:39 +0100)]
cfg80211: add support for non-linear skbs in ieee80211_amsdu_to_8023s

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agocfg80211: add function for 802.3 conversion with separate output buffer
Felix Fietkau [Tue, 2 Feb 2016 13:39:09 +0000 (14:39 +0100)]
cfg80211: add function for 802.3 conversion with separate output buffer

Use skb_copy_bits in preparation for allowing fragmented skbs

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agomac80211: move A-MSDU skb_linearize call to ieee80211_amsdu_to_8023s
Felix Fietkau [Tue, 2 Feb 2016 13:39:08 +0000 (14:39 +0100)]
mac80211: move A-MSDU skb_linearize call to ieee80211_amsdu_to_8023s

Prepararation for zero-copy A-MSDU support with page fragment SKBs

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agomac80211: fix memory leak
Sudip Mukherjee [Tue, 2 Feb 2016 07:51:14 +0000 (13:21 +0530)]
mac80211: fix memory leak

On error we jumped to the error label and returned the error code but we
missed releasing sinfo.

Fixes: 5fe74014172d ("mac80211: avoid excessive stack usage in sta_info")
Reviewed-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agomac80211: Interoperability workaround for 80+80 and 160 MHz channels
Jouni Malinen [Mon, 1 Feb 2016 09:40:55 +0000 (11:40 +0200)]
mac80211: Interoperability workaround for 80+80 and 160 MHz channels

Number of deployed 80 MHz capable VHT stations that do not support 80+80
and 160 MHz bandwidths seem to misbehave when trying to connect to an AP
that advertises 80+80 or 160 MHz channel bandwidth in the VHT Operation
element. To avoid such issues with deployed devices, modify the design
based on recently accepted IEEE 802.11 standard changes (*).

This allows poorly implemented VHT 80 MHz stations to connect with the
AP in 80 MHz mode. 80+80 and 160 MHz capable stations need to support
the new workaround mechanism to allow full bandwidth to be used.
However, there are more or less no impacted station with 80+80/160
capability deployed.

The rebased version of this patch is based on the updated version from
Johannes Berg to take the HT/VHT chandef refactoring into account.

(*) Changes in
https://mentor.ieee.org/802.11/dcn/15/11-15-1530-04-000m-vht160-operation-signaling-through-non-zero-ccfs1.docx
were accepted during the IEEE 802.11 January 2016 meeting.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agomac80211: add API to allow filtering frames in BA sessions
Sara Sharon [Thu, 28 Jan 2016 14:19:25 +0000 (16:19 +0200)]
mac80211: add API to allow filtering frames in BA sessions

If any frames are dropped that are part of a BA session, the reorder
buffer will "indefinitely" (until the timeout) wait for them to come
in (or a BAR moving the window) and won't release frames after them.
This means it isn't possible to filter frames within a BA session in
firmware.

Introduce an API function that allows such filtering. Calling this
function will move the BA window forward to the new SSN, and allows
marking frames after the SSN as having been filtered, so any future
reordering activity will release frames while skipping the holes.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agomac80211: change ieee80211_rx_reorder_ready() arguments
Johannes Berg [Thu, 28 Jan 2016 14:19:24 +0000 (16:19 +0200)]
mac80211: change ieee80211_rx_reorder_ready() arguments

Clean up ieee80211_rx_reorder_ready() callers by passing the RX
TID struct and the index, instead of the frames list. This will
make it more extensible as well.

While at it, move the inline to rx.c as it's only used there.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agomac80211: expose txq queue depth and size to drivers
Michal Kazior [Wed, 27 Jan 2016 14:26:12 +0000 (15:26 +0100)]
mac80211: expose txq queue depth and size to drivers

This will allow drivers to make more educated
decisions whether to defer transmission or not.

Relying on wake_tx_queue() call count implicitly
was not possible because it could be called
without queued frame count actually changing on
software tx aggregation start/stop code paths.

It was also not possible to know how long
byte-wise queue was without dequeueing.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
8 years agomac80211: Parse legacy and HT rate in injected frames
Sven Eckelmann [Tue, 26 Jan 2016 16:11:13 +0000 (17:11 +0100)]
mac80211: Parse legacy and HT rate in injected frames

Drivers/devices without their own rate control algorithm can get the
information what rates they should use from either the radiotap header of
injected frames or from the rate control algorithm. But the parsing of the
legacy rate information from the radiotap header was removed in commit
e6a9854b05c1 ("mac80211/drivers: rewrite the rate control API").

The removal of this feature heavily reduced the usefulness of frame
injection when wanting to simulate specific transmission behavior. Having
rate parsing together with MCS rates and retry support allows a fine
grained selection of the tx behavior of injected frames for these kind of
tests.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Cc: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>