ath9k: Add a HW capability for WLAN/BT RX diversity

Make use of this capability to restrict the usage of the
debugfs file and modparam using which this feature can
be enabled.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Cleanup WLAN/BT RX diversity

For single-chain WLAN+BT cards, the BT antenna can be used for
WLAN RX when the BT interface is disabled. Rename the modparam
"antenna_diversity" to "bt_ant_diversity" to clarify this.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Fix antenna diversity for CUS198

CUS198/CUS230 need a few tweaks in the antenna diversity
algorithm to accomodate RSSI variation. Add a couple
of knobs to control low RSSI threshold and fast antenna
diversity bias values.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Print LNA combining mode during init

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Add information about antenna diversity

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Merge tag 'for-linville-20130730' of git://github.com/kvalo/ath6kl

Merge branch 'for-john' of git://git./linux/kernel/git/iwlwifi/iwlwifi-next

ath9k: Add statistics for antenna diversity

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Use a subroutine to calculate ALT ratio

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Simplify checks in quick_scan

There is a function to do a ratio comparison for ALT,
so make use of it.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Use a helper function for checking LNA options

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Use a subroutine to try LNA switch

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Add ALT check for cards with GROUP-3 config

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Use a subroutine to check for short scan

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Do a quick scan only when scan_not_start is true

Right now, it is being done for all cases.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Add a debugfs file for antenna diversity

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwl4965: better skb management in rx path

4965 version of Eric patch "iwl3945: better skb management in rx path".
It fixes several problems :

1) skb->truesize is underestimated.
   We really consume PAGE_SIZE bytes for a fragment,
   not the frame length.
2) 128 bytes of initial headroom is a bit low and forces reallocations.
3) We can avoid consuming a full page for small enough frames.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ssb: drop BROKEN from SSB_SFLASH

With recent patches ssb can fetch info about serial flash and register
it as a platform device. No more reasons to mark it BROKEN.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rtlwifi: rtl8192cu: fix function declaration header

Move rtl92cu_update_hal_rate_tbl declaration to hw.h to correspond with function
definition in hw.c.
Fixes sparse warning in hw.c warning: symbol 'rtl92cu_update_hal_rate_tbl' was
not declared.

Signed-off-by: Mark Schulte <schultetwin@gmail.com>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: populate rates in probe request using cfg80211_scan_request

Whenever available, use cfg80211_scan_request to populates rates
in outgoing probe request. This will help to advertise band specific
rates and fix an issue where 11b rates were advertised in probe
request going out on 11a band.

This will also ensure that we do not advertise 11b rates while P2P
scan is going on.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: fix adapter pointer dereference issue

It has introduced by recent commit 6b41f941d7cd: "mwifiex:
handle driver initialization error paths" which adds error
path handling for mwifiex_fw_dpc().

release_firmware(adapter->*) is called for success as well
as failure paths. In failure paths, adapter is already freed
at this point.

The issue is fixed by moving mwifiex_free_adapter() call.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Merge branch 'for-john' of git://git./linux/kernel/git/jberg/mac80211-next

iwlwifi: mvm: advertise support for DYNAMIC / STATIC SMPS

This feature is fully supported by iwlwmvm, so advertise
it.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

iwlwifi: mvm: add high temperature SKU thermal throttling parameters

When the NIC is expected to operate in high temperature,
it is advisable to put more aggresive thermal throttling
parameters, in order to prevent CT-kill.

Signed-off-by: eytan lifshitz <eytan.lifshitz@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

iwlwifi: list Emmanuel in maintainers file

Wey-Yi has moved on a while ago, but we forgot to update the
maintainers file. Since Emmanuel is de facto maintaining the
driver along with myself now, list him instead.

Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

iwlwifi: mvm: Change beacon abort escape time value

Set beacon abort escape timer values - 6 beacons in D0 state,
9 beacons in D3 and D0i3.

Signed-off-by: Alexander Bondar <alexander.bondar@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

iwlwifi: remove duplicate rate scale init code

The rate scale windows are cleared twice as part of the init.
Cleanup this duplication in both mvm and dvm.

Signed-off-by: Eyal Shapira <eyal@wizery.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

iwlwifi: mvm: remove obsolete flag in TX command API

This API isn't valid any more. It wasn't used anyway.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

iwlwifi: mvm: report per-chain signal to mac80211

Instead of reporting the maximum signal strength and the
antenna bitmap in the antenna field (which is really just
for radiotap and defined differently), report the signal
strength values per chain and set the chain bitmap.

Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

iwlwifi: mvm: fix debugfs restart if fw_restart is disabled

If fw_restart is disabled, using the fw_restart debugfs
file will enable fw_restart and then send the failing
command, but this still frequently fails restart because
it resets fw_restart afterwards and is thus racy.

Fix this by tracking fw_restart separately and allowing
"always restart", "never restart" and "restart N times".

Signed-off-by: Eran Harary <eran.harary@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

iwlwifi: mvm: Change beacon filtering command

Change beacon filtering command due to a change in the API.

In case the FW supports the old API, we do not send the
BF HCMD and assume that since the corresponding struct in
the FW is zeroed by default then we don't need to disable
it in the FW actively.

Signed-off-by: Hila Gonen <hila.gonen@intel.com>
Signed-off-by: Dor Shaish <dor.shaish@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

iwlwifi: mvm: register vif debugfs for AP mode too

The current registered the per-vif debugfs handler for
STA mode only.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>

iwlwifi: mvm: split constants into separate file

To make maintaining some constant default values in the
driver easier, declare them in a separate file.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

iwlwifi: mvm: assign quota per virtual interface

Instead of assigning quota per used binding (channel) assign
the same amount of quota for each virtual interface so that
when there are more than two interfaces using more than one
channel, we'll stay on the channels proportionally to the
number of virtual interfaces using the channels.

Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

iwlwifi: mvm: Return on inconsistency in add interface

Return in case that HW restart is in progress but the added
interface is not found during the iteration over all the interfaces.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

iwlwifi: mvm: Change AM->PSM timeout for EAPOL frames

Currently after sending EAPOL frame FW transition to power saving mode
within 10 or 100 msec (as specified by power table command). According
to new requirement this timeout for a specific EAPOL frame must be
controlled by the driver by setting tx_pm_timeout field of TX_CMD to 2
(PM_FRAME_ENUM_MGMT). This value corresponds to 32 msec timeout.

Signed-off-by: Alexander Bondar <alexander.bondar@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

iwlwifi: mvm: support six IPv6 addresses in D3

Newer firmware supports offloading more IPv6 addresses for NDP,
adjust the code to send the correct command depending on the
firmware capability.

Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

iwlwifi: mvm: Enable user set TX power

Support Tx power limitations. These limitations can come from
mac80211 for various reasons.

Signed-off-by: Matti Gottlieb <matti.gottlieb@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

iwlwifi: mvm: reprobe device on firmware error during restart

If we get a firmware error during restart, we currently abandon any
hope and simply fail, getting stuck until the driver is reloaded.
Unfortunately, there isn't really much else we can do since restart
will likely continue to fail, and asking mac80211 for disconnection
just causes more error.

To allow the user to at least set up the device again completely
from scratch, reprobe the device and in doing so completely destroy
any mac80211/driver state.

Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

iwlwifi: mvm: remove the default calibration values for 7000

The fw is now able to run TX_IQ_SKEW and RX_IQ_SKEW by
itself. No need for default values any more.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Reviewed-by: Dor Shaish <dor.shaish@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

iwlwifi: mvm: new api to get signal strength

A new API that replaces the rx signal strength calculation via agc & rssi.
The energy is now calculated outside the driver and transferred by the fw.

Signed-off-by: Avri Altman <avri.altman@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

ath10k: fix rts/fragmentation threshold setup

If RTS and fragmentation threshold values are
0xFFFFFFFF they should be considered disabled and
no min/max limits must be applied.

This fixes some issues with throughput issues,
especially with VHT.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: fix memleak in mac setup

In some cases channel arrays were never freed.

The patch also unifies error handling in the mac
setup function.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: don't reset HTC endpoints unnecessarily

Endpoints are re-initialized upon HTC start anyway
so there's no need to do that twice in case of
restarting HTC (i.e. in case of hardware
recovery).

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: prevent HTC from being used after stopping

It was possible to submit new HTC commands
after/while HTC stopped. This led to memory
corruption in some rare cases.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: create debugfs interface to trigger fw crash

This can be useful for testing. To perform a
forced firmware crash write 'crash' to
'simulate_fw_crash' debugfs file. E.g.

  echo crash > /sys/kernel/debug/ieee80211/phy1/ath10k/simulate_fw_crash

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: fix NULL dereference for injected packets

Tx processing functions dereference vif and caused
NULL to be dereferenced for injected frames.

Don't call these functions at all for injected
frames. It doesn't make much sense to do so
anyway.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: implement fw crash simulation command

This can be useful to test FW crash handling.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: implement device recovery

Restart the hardware if FW crashes.

If FW crashes during recovery we leave the
hardware in a "wedged" state to avoid recursive
recoveries.

When in "wedged" state userspace may bring
interfaces down (to issue stop()) and then bring
one interface (to issue start()) to reload
hardware manually.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: skip fw stats debugfs interface if device is down

If the device is not running then there may be no
FW at all to send the query to. If the FW is
already there it might still trigger a crash if
the command is sent before the device is fully
initialized.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: store firmware files in memory

Different FW versions may provide different
functions thus mean different hw capabilities
advertised to mac80211.

It is safe to swap firmware files on disk during
driver/device runtime without worries.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: defer hw setup to start/stop mac80211 hooks

This fixes suspend-to-disk. The hardware is now
re-initialized upon freeze/thaw properly.

This also makes suspend/resume re-initialize the
hardware as WoWLAN support is not done yet.

With some little work it should be possible to
support hw reconfiguration for hw/fw recovery.

HW must be initialized once before registering to
mac80211 because FW determinates what hw
capabilities can be advertised.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: make sure all resources are freed upon ath10k_stop()

This is necessary for proper hw reconfiguration
and to avoid memory leaks.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: move free_vdev_map initialization

This is necessary for hw reconfiguration to work.
Since mac80211 is not calling remove_interface()
is such case we must reset free_vdev_map.

Also use a define instead of a hardcoded value for
vdev map initialization.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: decouple suspend code

Split up fw-related and hw-related suspension code.

Although we don't advertise WoW support to
mac80211 yet it's useful to keep the code in
suspend/resume hooks.

At this point there's no need to keep pci pm ops.
In case of WoW mac80211 calls ath10k_suspend()
which should take care of entering low-power mode.
In case WoW is not available mac80211 will go
through regular interface teradown and use start/stop.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: reset BMI state upon init

This is necessary if we want to be able to restart
hw on-the-fly.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: allow deferred regd update

Regulatory domain notification hook can be called
regardless of the hw state (i.e. before start
mac80211 callback).

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: decouple core start/stop logic

Enables code reuse for proper hw reconfiguration
that is in turn required for proper
suspend/hibernation/wowlan support.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: decouple pci start/stop logic

Split logic that prepares the device for BMI
phase/cleans up related resources.

This is necessary for ath10k to be able to restart
hw on the fly without reloading the module.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: add missing debug prints

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: abort scan properly if wmi_scan_stop fails

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: improve locking

Add more lockdep asserts and a few conf_mutex
locks. It's better to be on the safe side.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: embed HTT struct inside ath10k

This reduces number of allocations and simplifies
memory managemnt.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: embed HTC struct inside ath10k

This reduces number of allocations and simplifies
memory managemnt.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: rename hif callback

The `set_callbacks` is a more appopriate name for
the function. Let's leave `init` for something
else.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: change function to take struct ath10k as arg

This aligns it to the argument list of other
similar functions.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: provide errno if bmi read/write fails

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: lower print level for a message

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: silent warning in IBSS mode

There is no TIM IE generated in IBSS beacons by
mac80211.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: fix typo in define name

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: remove ath10k_bus

It serves no purpose.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: do not setup rts/frag thresholds for suspended interfaces

mac80211 calls for rts/frag threshold hooks before
any interface is brought back up again when
resuming.

We would set vdev parameters before given vdev is
created lading to a FW crash.

rts/frag thresholds will be re-set accordingly in
add_interface() hook anyway.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: setup rts/frag thresholds upon vdev creation

mac80211 configures rts/frag thresholds per-hw not
per-vif. ath10k FW expects those values to be set
per-vdev (i.e. per-vif).

ath10k should now respect rts/frag thresholds set
before a given interface was brought up.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: fix possible deadlock

It was possible to have a deadlock due to inverted
locking of local->iflist_mtx and
ath10k->conf_mutex.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

ath10k: fix teardown ordering

This should fix memory corruption if HIF is tried
to be restarted.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

mwifiex: code rearrangement in sdio.c

Some function definitions are moved to appropriate place
to avoid forward declarations.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: handle driver initialization error paths

mwifiex_fw_dpc() asynchronously takes care of firmware download
and initialization. Currently the error paths in mwifiex_fw_dpc()
are not handled. So if wrong firmware is downloaded, required
cleanup work is not performed. memory is leaked and workqueue
remains unterminated in this case.

mwifiex_terminate_workqueue() is moved to avoid forward
declaration.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Merge branch 'master' of git://git./linux/kernel/git/linville/wireless

iwlwifi: mvm: enable pre-scan passive to active

Enable passive to active scan feature, on channels that was
active in the past hour.

Signed-off-by: David Spinadel <david.spinadel@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

iwlwifi: dvm: remove P2P support

We're not planning to support P2P on older devices, so
remove the Kconfig option and associated code for it.

Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

bgmac: make bgmac depend on bcm47xx

bgmac uses bcm47xx_nvram.h which is only available when BCM47XX was
selected. Earlier BCMA_HOST_SOC depended on BCM47XX so this was not
build on any other archs, but that changed. We should modify this
driver to get access to the nvram or the variables through platform
data.

This fixes a build problem in linux-next reported by Stephen Rothwell:

drivers/net/ethernet/broadcom/bgmac.c:19:27: fatal error: bcm47xx_nvram.h: No such file or directory
 #include <bcm47xx_nvram.h>
                           ^

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wireless: rt2x00: rt2800usb: add RT3573 devices

taken from Ralink linux and windows drivers:

0x1b75, 0x7733 AirLive 450Mbps Wireless-N Dual Band USB Adapter
0x0b05, 0x17bc ASUS USB-N66 450Mbps Dual Band USB Adapter
0x0b05, 0x17ad ASUS USB-N66 Dual Band N Network Adapter
0x050d, 0x1103 Belkin Wireless Adapter
0x148f, 0xf301 Cameo Ralink3573 3x3 single band USB dongle
0x7392, 0x7733 Edimax
0x0e66, 0x0020 Hawking HD45U Dual Band USB Wireless-N Adapter
0x0e66, 0x0021 Hawking HD45U Dual Band Wls-450N Adapter
0x04bb, 0x094e I-O DATA WN-AG450U Wireless LAN Adapter
0x0789, 0x016b Logitec LAN-W450AN/U2
0x0846, 0x9012 NETGEAR WNDA4100 N900 Wireless Dual Band USB Adapter
0x0846, 0x9019 NETGEAR WNDA4200D Wireless Dual Band USB Adapter
0x2019, 0xed19 Planex GW-USDual450
0x148f, 0x3573 Ralink 802.11n USB Wireless LAN Card
0x0df6, 0x0067 Sitecom Wireless Dualband Network Adapter N750 X6
0x0df6, 0x006a Sitecom Wireless Dualband Network Adapter N900 X7
0x0586, 0x3421 ZyXEL Dual-Band Wireless N450 USB Adapter

Cc: Ivo van Doorn <IvDoorn@gmail.com>
Cc: Gertjan van Wingerde <gwingerde@gmail.com>
Cc: Helmut Schaa <helmut.schaa@googlemail.com>
Cc: John W. Linville <linville@tuxdriver.com>
Cc: users@rt2x00.serialmonkey.com
Cc: linux-wireless@vger.kernel.org
Signed-off-by: Xose Vazquez Perez <xose.vazquez@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Fix diversity combining for AR9285

When antenna diversity combining is enabled in the EEPROM,
the initial values for the MAIN/ALT config have to be
programmed correctly. This patch adds it for AR9285.

Since the diversity combining macros are common to all chip
families, remove the redundant AR9285 macros and move the
definitions to phy.h.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: modify mwifiex_ap_sta_limits to advertise support for P2P

We support maximum simultaneous 2 non-AP station interfaces and
they can assume role of Station/P2P client/P2P GO.
Advertise this support to cfg80211 so that concurrent P2P/STA
operation is possible.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: remove duplicate structure host_cmd_tlv

We already have 'struct mwifiex_ie_types_header' with same
definition. Hence host_cmd_tlv is removed in this patch.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: correction in mwifiex_check_fw_status() return status

For PCIe cards, when wrong firmware is downloaded, firmware is
failed to be ready in 10 seconds. We should return an error at
this point. But currently we are sending first command to firmware.
As expected firmware doesn't respond to this command and command
timeout occurs.

This patch fixes the problem by removing unnecessary 'ret'
variable modifications in "if (ret) {" block.
The block is just supposed to update "adapter->winner" flag.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: replace mdelay with msleep

It is observed that when wrong firmware is downloaded for
PCIe card, system hangs for 10 seconds. The reason is mdelay()
is used when firmware status is polled.

Replace mdelay with msleep(non-blocking API) to fix the issue.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: reduce firmware poll retries

After downloading the firmware, firmware status is checked by
reading a register. Polling interval is 100 msecs. Therefore 100
retries means the status is checked for 10 secs which is more than
sufficient for firmware to get ready.

This patch removes 1000 retries macro usage, because 100secs
time is not practical.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: add unregister_dev handler for usb interface

Clear the data pointer stored in USB interface structure in
this handler. This helps to return from mwifiex_usb_disconnect()
if driver deinitialization is already performed while handling
an error path for mwifiex_usb_probe().

USB8797 card gets enumerated twice. First enumeration is for
firmware download and second enumeration expects firmware
initialization. mwifiex_usb_probe() always takes care of
deinitialization for first enumeration after firmware download.

Also, this change matches our handling for SDIO and PCIe
interfaces.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: move if_ops.cleanup_if() call

As if_ops.init_if() is called in mwifiex_register(),
corresponding cleanup routine should be called in
mwifiex_unregister().

Currently it's there in mwifiex_adapter_cleanup(), hence
interface specific cleanup is not performed if driver
initialization is failed.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: remove unnecessary del_timer(cmd_timer)

It is already there in mwifiex_unregister(). So unnecessary
call in mwifiex_adapter_cleanup() is removed in this patch.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: move del_timer_sync(scan_delay_timer) call to fix memleak

Currently it is in mwifiex_adapter_cleanup() which doesn't get
called if driver initialization is failed causing memory leak.

scan_delay_timer is initialized in mwifiex_register(), so it
should be deleted in mwifiex_unregister(). Hence it has been
moved to appropriate place.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: add PCIe shutdown handler to avoid system hang on reboot

If reboot command is issued when device is in connected state,
system hangs while booting. This issue is fixed by doing cleanup
in shutdown handler.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: correct max IE length check for WPS IE

This patch is bug fix for an invalid boundry check for WPS IE.
We should check max IE length against defined macro; instead we were
checking it against size of pointer. Fix it.
Also move IE length check before allocation of memory.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: support to send deauth for P2P client

During P2P handshake, P2P client needs to send deauth after EAPOL
FAILURE to GO. We need add bss mode for P2P client when handle deauth
request.

Without this change, deauth can not be sent out from P2P client side.

Signed-off-by: Stone Piao <piaoyun@marvell.com>
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: skip registering mgmt frame that has already registered

Before sending command to firmware, we need to check the frame type.
We skip registering the mgmt frame that has already been registered.

Signed-off-by: Stone Piao <piaoyun@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: discard deauth and disassoc event during WPS session

Some GO will send deauth or disassoc packet at the end of WPS
handshake, which causes P2P connecion failure due to the race
condition between event path and data path.

Signed-off-by: Stone Piao <piaoyun@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: add tx info to skb when forming mgmt frame

In function 'mwifiex_write_data_complete' it need tx info to find
the mwifiex_private to updates statistics and wake up tx queues.
Or we may trigger tx queues timeout when transmitting lots of mgmt
frames.

Signed-off-by: Huawei Yang <harvey.huawei.yang@gmail.com>
Signed-off-by: Stone Piao <piaoyun@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: delete AP TX queues when bridged packets reach threshold

Delete packets from TX queues for this mwifiex_private structure
when bridged packet count reaches maximum threshold. Bridged packets
from each RA List are deleted till they fall to low threshold of 128.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: maintain outstanding packet count for RA list instead of packet size

Maintain total outstanding packet count for RA list instead of total
outstanding size as packet count metric seems more reasonable for
checking threshold etc.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>