Its logic can be implemented with
iwl_mvm_power_mac_update_mode.
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

If the driver detects old firmware, we disable support for
power management.
This greatly simplifies the code.
Reviewed-by: NAlexander Bondar <alexander.bondar@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Remove the enum abuse (using an enum to store a set of values),
the unneeded ret variable and unnecessary if nesting.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Some older versions of wpa_supplicant don't necessarily stop
scheduled scan before starting a regular scan, and there's
nothing in the API that requires it either. As a consequence
our driver's behaviour of not allowing scan while scheduled
scan was in progress broke userspace.

However, it is valid to unilaterally stop scheduled scan at
any point in time, so when a regular scan request comes just
abort the scheduled scan and run the regular scan.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Reviewed-by: NAlexander Bondar <alexander.bondar@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Schedule work to query the wakeup reasons, and
disconnect in some cases (e.g. beacon loss).
Signed-off-by: NEliad Peller <eliadx.peller@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

We don't want to go into D0i3, when P2P_CLI, AP (including
GO) or IBSS interfaces are running, so take appropriate
references.
Signed-off-by: NEliad Peller <eliadx.peller@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Take a reference when starting to scan and release it on completion.
Note that if the scan is cancelled/aborted, a completion will still be
sent up.
Signed-off-by: NArik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: NEliad Peller <eliadx.peller@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Hold a bitmap of taken references, according to the
reference reason (e.g. down, scan).

This will allow us validate our state and add some debugfs
entries later on.

Unref the transport when the FW is fully initialized,
allowing it to go into a low power mode.

Disallow the transition to low-power while recovery is in
progress.
Signed-off-by: NArik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: NEliad Peller <eliadx.peller@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Configure skip-over-dtim and beacon filtering on D0i3
enter/exit.

Since the D0i3 entry/exit commands require different
command flags (e.g. CMD_HIGH_PRIORITY), add a new parameter
to the functions being called, and make the current users
pass CMD_SYNC.
Signed-off-by: NEliad Peller <eliadx.peller@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Reviewed-by: NAlexander Bondar <alexander.bondar@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Allow reading and setting bcast filtering configuration
through debugfs.

By default, mvm->bcast_filters is used for setting
the bcast filtering configuration (these filters
will be configured for each associated station).

For testing purposes, allow overriding this configuration,
and setting the bcast filtering configuration manually.
The following debugfs keys can be used:
* bcast_filtering/override - use debugfs values instead
	of default configuration
* bcast_filtering/filters - set filters (+ attributes)
* bcast_filtering/macs - per-mac bcast filtering
	configuration (policy + attached filters)
Signed-off-by: NEliad Peller <eliadx.peller@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Add our ip as a new attribute to the bcast filtering
configuration (i.e. check the dest ip field of the
arp request).

Add bcast filter to pass incoming dhcp offer
broadcast frames as well (for sta vifs).

In order to support such dynamic configuration,
use the reserved1 field as a bitmap for driver internal
flags (which will indicate we want to configure the ip
in this attribute), and reconfigure the bcast
filtering on BSS_CHANGED_ARP_FILTER indication.
Signed-off-by: NEliad Peller <eliadx.peller@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Configure arp request broadcast filter if this
option is enabled, in order to allow only arp
request broadcasts to pass-in.

(A following patch will make this filter even narrower
by limiting the arp request to our own ip)
Signed-off-by: NEliad Peller <eliadx.peller@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Broadcast filtering allows dropping broadcast
frames that don't match the configured patterns.

Use predefined filters, and configure them for
each associated station vif.

There is no need to optimize and attach the same
filter to multiple vifs, as a following patch
will configure each filter to have per-vif unique
values.

Configure the bcast filtering on assoc changes.

Add a new IWLWIFI_BCAST_FILTERING Kconfig option
in order to enable broadcast filtering.
Signed-off-by: NEliad Peller <eliadx.peller@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Newer firmware will support uAPSD clients in AP/GO mode, so complete
the driver support for it. The way it works is described in comments
in the code, but basically the driver just has to pass down all the
mac80211 requests and do accounting on agg/non-agg queues properly.

For older firmware, this doesn't change anything as it ignores the
fields used by the new firmware, and we only advertise uAPSD support
when the firmware does.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

The request of SMPS issued by the Thermal Throttling code
was not reset when we disassociated - fix that.
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

It's a bit strange to treat an array as a pointer, so use proper
array indexing instead.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

The power settings need to be updated after a binding flow is done
and before quota calculations. This was missing in the start_ap_ibss()
flow. Fix it.
Signed-off-by: NIlan Peer <ilan.peer@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

The state variable was not set to false in case of a failure to
complete the start_ap_ibss() flow.
Signed-off-by: NIlan Peer <ilan.peer@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Happy new year!
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Currently, the MAC context tsf_id assignment and the master/slave
relations are determined only when a new vif is added, as part
of the MAC context resource allocation. However, at this stage, the
beacon interval is not known, and thus could not be taken into account
in the master-slave algorithm.

To fix this, recalculate the MAC context tsf_id assignment,
just before the MAC context is activated, i.e., just before
a station VMAC is configured to associated and before an AP
VMAC is started.
Signed-off-by: NIlan Peer <ilan.peer@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

If the channel min-width changes, we can update the PHY ctx, even if
it has multiple references.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Reviewed-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Don't check if mvm->fw->cs is NULL since it can't be.
cs is an array member of iwl_fw, it can't be NULL.

Use memset(ptr, 0, sizeof(*ptr)); instead of
memset(ptr, 0, sizeof(struct ptr_type));
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Fix a regression introduced in "iwlwifi: mvm: fix ht protection flags"
where an AP/IBSS MAC context could have been updated even before the
context was added to the FW. This fix avoids the following warning:

WARNING: ... at .../drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c:1132
    iwl_mvm_mac_ctxt_changed+0x75/0x90 [iwlmvm]()
Changing inactive MAC 0c:8b:fd:01:1a:30/3
Modules linked in: [...]
Call Trace:
[<c16041fd>] dump_stack+0x41/0x52
[<c1041074>] warn_slowpath_common+0x84/0xa0
[<f80d8f45>] ? iwl_mvm_mac_ctxt_changed+0x75/0x90 [iwlmvm]
[<f80d8f45>] ? iwl_mvm_mac_ctxt_changed+0x75/0x90 [iwlmvm]
[<c1041133>] warn_slowpath_fmt+0x33/0x40
[<f80d8f45>] iwl_mvm_mac_ctxt_changed+0x75/0x90 [iwlmvm]
[<f80d517a>] iwl_mvm_bss_info_changed+0x22a/0x4b0 [iwlmvm]
[<c160831d>] ? mutex_unlock+0xd/0x10
[<f80d4678>] ? iwl_mvm_configure_filter+0x58/0x70 [iwlmvm]
[<f80d4f50>] ? iwl_mvm_mac_tx+0xc0/0xc0 [iwlmvm]
[<f8132d83>] ieee80211_bss_info_change_notify+0xa3/0x1d0 [mac80211]
[<f8149247>] ? ieee80211_del_virtual_monitor+0x127/0x1f0 [mac80211]
[<f8149cac>] ieee80211_do_open+0x12c/0xeb0 [mac80211]
[<c106c6de>] ? __raw_notifier_call_chain+0x1e/0x30
[<c106c70f>] ? raw_notifier_call_chain+0x1f/0x30
[<f814aa8d>] ieee80211_open+0x5d/0x60 [mac80211]
[<c1500c7b>] __dev_open+0xab/0x140
[<c160b39a>] ? _raw_spin_unlock_bh+0x2a/0x30
[<c1500f41>] __dev_change_flags+0x81/0x160
[<c10ab6fc>] ? __lock_is_held+0x3c/0x60
[<c15010d1>] dev_change_flags+0x21/0x60
Signed-off-by: NIlan Peer <ilan.peer@intel.com>
Reported-by: NJohannes Berg <johannes.berg@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

The stop_hw trans callback is not well defined. It is missing in many
cleanup flows and the division of labor between stop_device/stop_hw
is cumbersome. Remove stop_hw and use stop_device to perform both.
Implement this for all current transports.

PCIE needs some extra configuration the op-mode is leaving to configure
RF kill. Expose this explicitly as a new op_mode_leave trans callback.
Take the call to stop_device outside iwl_run_mvm_init_ucode, this
makes more sense and WARN when we want to run the INIT firmware while
it has run already.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Configure the phy context to the minimum required
bandwidth, given by ctx->min_def.

Tuning to a narrower bandwidth should reduce the
noise level and consume less power.
Signed-off-by: NEliad Peller <eliad@wizery.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Configure the fw to filter multicast according to
the addresses given by mac80211.

Note that bssid should be given even if we want
to pass all the multicast frames.
Signed-off-by: NEliad Peller <eliad@wizery.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

This is more related to phy contexts than to mac context.
Move this function to there.
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Enable power save on P2P client interface only if it is the
only bound interface.
Avoid using uAPSD if P2P client is associated to GO that uses
opportunistic power save. This is due to current FW limitation.
Signed-off-by: NAlexander Bondar <alexander.bondar@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

When monitor interface is activated device power save needs
to be disabled.
Re-consider power management status on other active
interfaces when monitor interface is bound or unbound.
Signed-off-by: NAlexander Bondar <alexander.bondar@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

FW still does not support power management on multiple MAC interfaces.
Currently the driver enforce this limitation by disabling PM if second
interface is added. Change this behavior to allow PM on a single interface
even if other interfaces exist but not bound to any specific PHY.
PM will be enabled if only one single interface is bound.
Signed-off-by: NAlexander Bondar <alexander.bondar@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

FW implements protective algorithm to identify AP's improper uAPSD
behavior. FW sends misbehaving AP notification in this case.
Add this notification handling. Avoid using uAPSD in next association
to the exactly same AP. Refactor iwl_mvm_power_build_cmd() to move
uAPSD related code to a separate function.
Signed-off-by: NAlexander Bondar <alexander.bondar@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

This patch adds a cipher scheme support to extend a set of
the supported ciphers. The driver reads a cipher scheme list TLV
from FW image and passes it to mac80211 on hw registration.
After the cipher schemes are registered the driver handles key
installation and Tx/Rx calls related to the new ciphers.
Signed-off-by: NMax Stepanov <Max.Stepanov@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Send firmware a Smart FIFO Configuration host command to allow
interrupt coalescing. The smart FIFO is enabled when there is
only one bound interface (other than  p2p devices which are
ignored) and it is of type station, and activated while the
station is associated.

Smart Fifo allows aggragations of DMA transactions and by that
causes processor and memory controller to stay for a longer time
on lower c-states, thus saving platform power.
Firmware relies on driver to activate and disable it.
Signed-off-by: NLilach Edelstein <lilach.edelstein@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

iwlmvm relies on the current mac80211 behaviour of allowing
station pointers to be valid for an RCU grace period after
returning from the sta_state() callback. To optimise these
cases, this behaviour is going away, so make the driver use
the new sta_pre_rcu_remove() method to clear the pointer in
the fw_id_to_mac_id[] array.

Since this may happen while the station is still present in
the firmware, don't set the pointer to NULL but to -ENOENT
to mark this particular case. In client mode, the station
is kept even longer (until marking the MAC as unassociated)
so the drain flow must take this new behavior into account.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Advertise driver's support for low priority scan.
Notice that this overwrites current setting by mac80211 which depends
only on hw scan support.
This scan priority  can be configured by user space application
and it affects scan continuity, low priority scan
will be more fragmented scan.
Signed-off-by: NHaim Dreyfuss <haim.dreyfuss@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

This is just a helper function to go from the mac80211
station struct to our internal one, to later allow us
to avoid temporary 'mvmsta' variables.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

The HT protection flags have been a mess for a long time,
this patch fixes all this.

The proper source of information for this is the
protection in the HT operation mode IE which is
propagated to bss_conf by mac80211.

1) No need to set the HT protection flags when the link
   doesn't support HT.
2) We need to set the TGG protection when ERP is active.
Signed-off-by: NAvri Altman <avri.altman@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

Re-initialize rs when we get a rate_update hook called which
happens when remote STA changes bandwidth or sends a VHT opmode
notification.
Signed-off-by: NEyal Shapira <eyal@wizery.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>

We'll expand this later, this will make it easier to
classify and review what things are related to regulatory
or not.

Coccinelle only missed 4 hits, which I had to do manually,
supplying the SmPL in case of merge conflicts.

@@
struct wiphy *wiphy;
@@
-wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY
+wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG
@@
expression e;
@@
-e->flags |= WIPHY_FLAG_CUSTOM_REGULATORY
+e->regulatory_flags |= REGULATORY_CUSTOM_REG
@@
struct wiphy *wiphy;
@@
-wiphy->flags &= ~WIPHY_FLAG_CUSTOM_REGULATORY
+wiphy->regulatory_flags &= ~REGULATORY_CUSTOM_REG
@@
struct wiphy *wiphy;
@@
-wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY
+wiphy->regulatory_flags & REGULATORY_CUSTOM_REG

@@
struct wiphy *wiphy;
@@
-wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY
+wiphy->regulatory_flags |= REGULATORY_STRICT_REG
@@
expression e;
@@
-e->flags |= WIPHY_FLAG_STRICT_REGULATORY
+e->regulatory_flags |= REGULATORY_STRICT_REG
@@
struct wiphy *wiphy;
@@
-wiphy->flags &= ~WIPHY_FLAG_STRICT_REGULATORY
+wiphy->regulatory_flags &= ~REGULATORY_STRICT_REG
@@
struct wiphy *wiphy;
@@
-wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY
+wiphy->regulatory_flags & REGULATORY_STRICT_REG

@@
struct wiphy *wiphy;
@@
-wiphy->flags |= WIPHY_FLAG_DISABLE_BEACON_HINTS
+wiphy->regulatory_flags |= REGULATORY_DISABLE_BEACON_HINTS
@@
expression e;
@@
-e->flags |= WIPHY_FLAG_DISABLE_BEACON_HINTS
+e->regulatory_flags |= REGULATORY_DISABLE_BEACON_HINTS
@@
struct wiphy *wiphy;
@@
-wiphy->flags &= ~WIPHY_FLAG_DISABLE_BEACON_HINTS
+wiphy->regulatory_flags &= ~REGULATORY_DISABLE_BEACON_HINTS
@@
struct wiphy *wiphy;
@@
-wiphy->flags & WIPHY_FLAG_DISABLE_BEACON_HINTS
+wiphy->regulatory_flags & REGULATORY_DISABLE_BEACON_HINTS

Generated-by: Coccinelle SmPL
Cc: Julia Lawall <julia.lawall@lip6.fr>
Cc: Peter Senna Tschudin <peter.senna@gmail.com>
Cc: Mihir Shete <smihir@qti.qualcomm.com>
Cc: Henri Bahini <hbahini@qca.qualcomm.com>
Cc: Tushnim Bhattacharyya <tushnimb@qca.qualcomm.com>
Signed-off-by: NLuis R. Rodriguez <mcgrof@do-not-panic.com>
[fix up whitespace damage, overly long lines]
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>