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

mwifiex: retrieve correct max_power information in reg_notifier handler

As we don't provide custom regulatory rules to cfg80211,
"chan->max_power" remains uninitialized (0dbm) and
"chan->max_reg_power" will contain maximum power for a channel
extracted from regulatory rules provided by CRDA; hence use
"chan->max_reg_power" in reg_notifier handler instead of
"chan->max_power" to set max_power in firmware.

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: do not advertise custom regulatory domain capability

Since we don't support custom regulatory domains,
WIPHY_FLAG_CUSTOM_REGULATORY should not be enabled during wiphy
registration.

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: use correct firmware command to get power limits

"priv->max_tx_power_level" and "priv->min_tx_power_level" variables
are initialized to maximum and minimum power levels supported by
hardware by sending correct firmware command.

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: wakeup main thread to handle command queued

We miss to wakeup main thread after adding command to cmd pending
queue at follwing places. These commands are handled later when
main thread is woken up for handling an interrupt for sleep event
from firmware. This adds worst case delay of 50msec.

1) We don't wakeup main thread when asynchronous command is added
to cmd pending queue. Move queue_work() call from
mwifiex_wait_queue_complete() to mwifiex_send_cmd_async() to wakeup
main thread for sync as well as async commands.

2) Scan operation is triggered due to following reasons
   a) request from user (ex. "iw scan" command)
   b) Scan performed by driver internally.
   In first case main thread is woken up when first scan command is
queued in cmd pending queue (we don't need to wakeup main thread for
subsequent scan commands, because they are queued in scan command
response handler), but it is not done for second case. queue_work()
is moved inside mwifiex_scan_networks() to handle both the cases.

Signed-off-by: Amitkumar Karwar <akarwar@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>

ath9k: de-duplicate initvals

The initvals tool from https://github.com/mcgrof/qca-swiss-army-knife has
been modified to detect identical initval tables and replace them with
macros. This patch contains the generated changes.

On MIPS this reduces the binary size by 24 KB with no runtime changes.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: update AR934x initvals to latest version

Generated using the initvals tool from the qca-swiss-army-knife repository
from https://github.com/mcgrof/qca-swiss-army-knife

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: Fix signedness in a MCI debug message

seems i got a message like this
ath: phy0: BT_Status_Update: is_link=0, linkId=2,
state=1, SEQ=-2085766476 initially.

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_hw: make use of the wrapper to check for MCI init

ath9k_hw_mci_is_enabled wrapper also takes care of
ATH9K_HW_CAP_MCI being set for the AR9462 under test.

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: fix ANI operation in AP mode

ath9k_ani_reset (which is called at reset time) uses a state variable
ani->update_ani to prevent the ANI noise immunity state on the operating
channel from being overwritten by background scans. Unfortunately this
is also being set for AP mode, since it's mixed with code that is only
supposed to change the default settings after a reset.

In AP mode this has the side effect of having ANI run, but being unable to
change its runtime noise immunity level, making it effectively useless.

Fix this by getting rid of ani->update_ani and passing a parameter to
ath9k_hw_set_ofdm_nil and ath9k_hw_set_cck_nil instead.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Cc: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

iwlegacy: print how long queue was actually stuck

Every now and then, after resuming from suspend, the iwlegacy driver
prints
    iwl4965 0000:03:00.0: Queue 2 stuck for 2000 ms.
    iwl4965 0000:03:00.0: On demand firmware reload

I have no idea what causes these errors. But the code currently uses
wd_timeout in the first error. wd_timeout will generally be set at
IL_DEF_WD_TIMEOUT (ie, 2000). Perhaps printing for how long the queue
was actually stuck can clarify the cause of these errors.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: fix memory leak associated with IE manamgement

Free ap_custom_ie before return from function.

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>

ath9k: Fix compilation breakage

Wrap the MCI-work canceling with CONFIG_ATH9K_BTCOEX_SUPPORT.

Reported-by: Emmanuel Benisty <benisty.e@gmail.com>
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

brcmfmac: fix sparse warning introduced with checkdied patch

The commit "brcmfmac: introduce checkdied debugfs functionality"
also introduced a sparse warning:

..../brcmfmac/dhd_sdio.c:3147:45: sparse: cast to restricted __le32

This patch fixes this sparse warning.

Reported-by: Fengguang Wu <wfg@linux.intel.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

brcmfmac: add BCM4334 support

BCM4334 is a dualband a/b/g/n WiFi chip support 20MHz/40MHz
channels. This patch adds support for its SDIO interface.

Reviewed-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

brcmfmac: reduce allocations needed during nvram data download

The nvram data is preprocessed before being sent to the device
and just before sending an additional allocation was done that
assured word alignment of the data. This has moved to the
preprocessing step to reduce allocations and subsequent copying
of the nvram data.

Reviewed-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

brcmfmac: use firmware data buffer directly for nvram

The nvram file could be parsed directly in the data buffer in the
firmware structure passed by request_firmware function. This patch
gets rid of the redundant memcpy.

Reviewed-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

brcmfmac: move glom alignment setting to SDIO bus layer

txglomming alignment is a SDIO bus specific feature. It is more
appropriate to place it in SDIO bus layer instead of common layer.

Reviewed-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

brcmfmac: restrict dongle txglom disable to old SDIO core

txglomming is a firmware feature for sdio bus interface. For SDIO
device cores newer than revision 11, the default setting of
firmware should be used instead of disabling it from the host side.

Reviewed-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

brcmfmac: add support for bus specific data command

brcmfmac need to support data command setting for dongle's bus
core. A list must be placed at brcmf_bus structure before calling
brcmf_bus_start in order to be sent by brcmf_c_preinit_dcmds.

Reviewed-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

bcma: define some additional cores IDs

Some of them are BCM4706 specific AFAWK. Most of them was confirmed on
Netgear WNDR450.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: fix panic caused by returning a descriptor we have queued for reuse

Commit 3a2923e83c introduced a bug when a corrupt descriptor
is encountered - although the following descriptor is discarded
and returned to the queue for reuse the associated frame is
also returned for processing. This leads to a panic:

BUG: unable to handle kernel NULL pointer dereference at 000000000000003a
IP: [<ffffffffa02599a5>] ath_rx_tasklet+0x165/0x1b00 [ath9k]
Call Trace:
<IRQ>
[<ffffffff812d7fa0>] ? map_single+0x60/0x60
[<ffffffffa028f044>] ? ath9k_ioread32+0x34/0x90 [ath9k]
[<ffffffffa0292eec>] athk9k_tasklet+0xdc/0x160 [ath9k]
[<ffffffff8105e133>] tasklet_action+0x63/0xd0
[<ffffffff8105dbc0>] __do_softirq+0xc0/0x1e0
[<ffffffff8101a873>] ? native_sched_clock+0x13/0x80
[<ffffffff815f9d5c>] call_softirq+0x1c/0x30
[<ffffffff810151f5>] do_softirq+0x75/0xb0
[<ffffffff8105df95>] irq_exit+0xb5/0xc0
[<ffffffff815fa5b3>] do_IRQ+0x63/0xe0
[<ffffffff815f0cea>] common_interrupt+0x6a/0x6a
<EOI>
[<ffffffff8131840a>] ? intel_idle+0xea/0x150
[<ffffffff813183eb>] ? intel_idle+0xcb/0x150
[<ffffffff814a1db9>] cpuidle_enter+0x19/0x20
[<ffffffff814a23d9>] cpuidle_idle_call+0xa9/0x240
[<ffffffff8101c4bf>] cpu_idle+0xaf/0x120
[<ffffffff815cda8e>] rest_init+0x72/0x74
[<ffffffff81cf4c1a>] start_kernel+0x3b7/0x3c4
[<ffffffff81cf4662>] ? repair_env_string+0x5e/0x5e
[<ffffffff81cf4346>] x86_64_start_reservations+0x131/0x135
[<ffffffff81cf444a>] x86_64_start_kernel+0x100/0x10f

Making sure bf is cleared to NULL in this case restores the
old behaviour.

Signed-off-by: Tom Hughes <tom@compton.nu>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mac80211: correct behaviour on unrecognised action frames

When receiving an "individually addressed" action frame, the
receiver is required to return it to the sender. mac80211
gets this wrong as it also returns group addressed (mcast)
frames to the sender. Fix this and update the reference to
the new 802.11 standards version since things were shuffled
around significantly.

Cc: stable@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: enable serialize_regmode for non-PCIE AR9287

https://bugzilla.kernel.org/show_bug.cgi?id=42903

Based on the work of <fynivx@gmail.com>

Signed-off-by: Panayiotis Karabassis <panayk@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rtlwifi: rtl8192cu: New USB IDs

The latest Realtek driver for the RTL8188CU and RTL8192CU chips adds three
new USB IDs.

Reported-by: Xose Vazquez Perez <xose.vazquez@gmail.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Merge branch 'wl12xx-next' into for-linville

ath9k_htc: Fix IDLE power save

Remove the radio enable/disable stuff and fix the
transition to FULL_SLEEP mode when the device is idle.

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

ath9k_htc: Use atomic operations for op_flags

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

ath9k_htc: Change default listen interval to 1

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

ath9k: Fix lockdep splat

Cancel the MCI work only when MCI is actually enabled.
Fixes this:

[96833.124051] Call Trace:
[96833.124060]  [<ffffffff810afaf8>] __lock_acquire+0x1518/0x1e40
[96833.124065]  [<ffffffff810ad126>] ? mark_held_locks+0x86/0x110
[96833.124069]  [<ffffffff810ad3ad>] ? trace_hardirqs_on+0xd/0x10
[96833.124073]  [<ffffffff814464f0>] ? _raw_spin_unlock_irq+0x30/0x70
[96833.124078]  [<ffffffff81072968>] ? wait_on_cpu_work+0x98/0xc0
[96833.124082]  [<ffffffff810b0a11>] lock_acquire+0xa1/0x150
[96833.124085]  [<ffffffff81072990>] ? wait_on_cpu_work+0xc0/0xc0
[96833.124088]  [<ffffffff81072990>] ? wait_on_cpu_work+0xc0/0xc0
[96833.124092]  [<ffffffff810729e2>] wait_on_work+0x52/0x120
[96833.124095]  [<ffffffff81072990>] ? wait_on_cpu_work+0xc0/0xc0
[96833.124099]  [<ffffffff81063b3f>] ? del_timer+0x7f/0x110
[96833.124102]  [<ffffffff81072c13>] __cancel_work_timer+0x83/0x130
[96833.124106]  [<ffffffff81072cf0>] cancel_work_sync+0x10/0x20
[96833.124113]  [<ffffffffa065b5cd>] __ath_cancel_work+0x4d/0x60 [ath9k]
[96833.124119]  [<ffffffffa065cf28>] ath9k_config+0x458/0x680 [ath9k]
[96833.124125]  [<ffffffffa065dd1e>] ? ath9k_flush+0x6e/0x1d0 [ath9k]
[96833.124129]  [<ffffffff8144394d>] ? __mutex_unlock_slowpath+0x10d/0x190
[96833.124146]  [<ffffffffa056c7b5>] ieee80211_hw_config+0x135/0x2a0 [mac80211]
[96833.124163]  [<ffffffffa057ebbb>] ieee80211_do_open+0x67b/0xc50 [mac80211]
[96833.124178]  [<ffffffffa057f1fd>] ieee80211_open+0x6d/0x80 [mac80211]
[96833.124183]  [<ffffffff8137a44f>] __dev_open+0x9f/0xf0
[96833.124187]  [<ffffffff8137a701>] __dev_change_flags+0xa1/0x180
[96833.124190]  [<ffffffff8137a898>] dev_change_flags+0x28/0x70
[96833.124195]  [<ffffffff813e1179>] devinet_ioctl+0x659/0x780
[96833.124199]  [<ffffffff8137aea0>] ? dev_ioctl+0x210/0x6d0
[96833.124203]  [<ffffffff813e1db5>] inet_ioctl+0x75/0x90
[96833.124208]  [<ffffffff8135e0e0>] sock_do_ioctl+0x30/0x70
[96833.124211]  [<ffffffff8135e3dd>] sock_ioctl+0x7d/0x2c0
[96833.124218]  [<ffffffff81193c39>] do_vfs_ioctl+0x99/0x580
[96833.124222]  [<ffffffff81447415>] ? sysret_check+0x22/0x5d
[96833.124226]  [<ffffffff811941b9>] sys_ioctl+0x99/0xa0
[96833.124230]  [<ffffffff814473e9>] system_call_fastpath+0x16/0x1b

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

ath9k: raise aggregation limit to 64k for HT IBSS

mac80211 adds stations in HT IBSS as soon as a frame comes by,
even if the HT capabilities are not known yet (they are often
received later, e.g. in beacons). So far, ampdu factor/density
are only calculated when the station is initially added.

This patch changes this to update ampdu factor/density settings
when starting a blockack session.

Using this patch, we had performance boosts from 60 to 150 MBit/s
between two 2x2 Atheros devices in 5 GHz HT IBSS mode.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rtlwifi: rtl8192se: Fix double inclusion of header pci.h

The command "make includecheck" yields the following for the rtlwifi tree:

/home/finger/linux-2.6/drivers/net/wireless/rtlwifi/rtl8192se/sw.c: ../pci.h is included more than once.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

rtlwifi: Fix IRQ disabled warning

The PCI-based drivers can generate the following warning:

[ 9497.776350] ------------[ cut here ]------------
[ 9497.776366] WARNING: at kernel/softirq.c:159 local_bh_enable_ip+0x7a/0xa0()
[ 9497.776370] Hardware name: 05794NC
[ 9497.776597] Pid: 6413, comm: hostapd Not tainted 3.3.0-4.fc16.x86_64 #1
[ 9497.776601] Call Trace:
[ 9497.776612]  [<ffffffff81057b1f>] warn_slowpath_common+0x7f/0xc0
[ 9497.776633]  [<ffffffffa034a099>] ? rtl_pci_reset_trx_ring+0x199/0x230
[rtlwifi]
[ 9497.776640]  [<ffffffff81057b7a>] warn_slowpath_null+0x1a/0x20
[ 9497.776646]  [<ffffffff8105f06a>] local_bh_enable_ip+0x7a/0xa0
[ 9497.776654]  [<ffffffff815f3ef6>] _raw_spin_unlock_bh+0x16/0x20
[ 9497.776671]  [<ffffffffa03e50de>] destroy_conntrack+0x9e/0x120
[nf_conntrack]
[ 9497.776681]  [<ffffffff81511847>] nf_conntrack_destroy+0x17/0x20
[ 9497.776689]  [<ffffffff814d9c85>] skb_release_head_state+0xe5/0x120
[ 9497.776695]  [<ffffffff814d98b6>] __kfree_skb+0x16/0xa0
[ 9497.776700]  [<ffffffff814d9a35>] kfree_skb+0x45/0xc0
[ 9497.776717]  [<ffffffffa034a099>] rtl_pci_reset_trx_ring+0x199/0x230
[rtlwifi]
[ 9497.776734]  [<ffffffffa034a155>] rtl_pci_start+0x25/0x1d0 [rtlwifi]
[ 9497.776750]  [<ffffffffa03440b5>] rtl_op_start+0x55/0x90 [rtlwifi]
[ 9497.776785]  [<ffffffffa02c4956>] ieee80211_do_open+0x296/0xa10 [mac80211]
[ 9497.776794]  [<ffffffff815f7ddd>] ? notifier_call_chain+0x4d/0x70
[ 9497.776828]  [<ffffffffa02c513d>] ieee80211_open+0x6d/0x80 [mac80211]
[ 9497.776836]  [<ffffffff814e8b3f>] __dev_open+0x8f/0xe0
[ 9497.776842]  [<ffffffff814e8de1>] __dev_change_flags+0xa1/0x180
[ 9497.776847]  [<ffffffff814e8f78>] dev_change_flags+0x28/0x70
[ 9497.776856]  [<ffffffff8154e99d>] devinet_ioctl+0x61d/0x7b0
[ 9497.776863]  [<ffffffff8154ef55>] inet_ioctl+0x75/0x90
[ 9497.776870]  [<ffffffff814cdd50>] sock_do_ioctl+0x30/0x70
[ 9497.776876]  [<ffffffff814cee09>] sock_ioctl+0x79/0x2f0
[ 9497.776885]  [<ffffffff81193498>] do_vfs_ioctl+0x98/0x550
[ 9497.776891]  [<ffffffff811939e1>] sys_ioctl+0x91/0xa0
[ 9497.776897]  [<ffffffff815fc029>] system_call_fastpath+0x16/0x1b
[ 9497.776902] ---[ end trace 22886c442489082d ]---

The cause is due to calling kfree_skb() with interrupts disabled.

This bug is discussed in https://bugzilla.redhat.com/show_bug.cgi?id=797709.

Reported-and-Tested by: Ivan Ivanovich <iivanich@gmail.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Merge branch 'for-john' of git://git.sipsolutions.net/mac80211-next

Merge branch 'for-wireless' of git://git./linux/kernel/git/sameo/nfc-3.0

wlcore: print stack trace in every recovery

As recovery queuing can now occur from multiple code paths
it's convenient to know what triggered it in all cases
other than an intended recovery which is part of the
switch between single role to multi role.

Signed-off-by: Eyal Shapira <eyal@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: queue recovery in case of bus errors during cmd_remove_peer

Following the addition of propagating errors from the bus ops
there's a need to distinguish between bus errors (including timeout)
and a legitimate timeout occuring in cmd_wait_for_event_or_timeout.
In case of real bus errors we need to queue recovery even in cases
where a timeout on a response from the FW to a command is acceptable.

Reported-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Eyal Shapira <eyal@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: fix broken TX due to wrong queuing of recovery

commit 14bba17b "wl12xx: Propagate errors from wl1271_raw_write32"
breaks down TX in certain scenarios. wl1271_irq_locked() propagates
errors from wl1271_tx_work_locked however it may return -EBUSY
when the FW queues are full which is a legitimate case and not a
a real error. In this case a recovery is triggered by wl1271_irq
and this keeps repeating itself so TX is completely broken.
Fix it by avoiding propagating return values as errors even if they
aren't. Only bus (SDIO or SPI) ops failures would be progagated
as only these should trigger recovery.

Signed-off-by: Eyal Shapira <eyal@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: fix some failure cases in wlcore_probe()

We need to release the IRQ if hw_info() or identify_chip() fails.  And
we need unregister the HW with mac80211 if there are any failures
after it's registered.

Signed-off-by: Luciano Coelho <coelho@ti.com>

wl18xx: deprecate PG1 support

The new PG2 version of the chip has a few differences in terms of FW
API if compared to PG1.  PG1 is just a sample that shouldn't be used
in real life, so to avoid having to handle both separately, mark the
PG1 version as deprecated and bail out during probe.

Signed-off-by: Luciano Coelho <coelho@ti.com>

mac80211: make ieee80211_check_concurrent_iface netdev-independent

ieee80211_check_concurrent_iface() need not use the
netdev. Remove the use of the netdev here to prepare
the function for P2P device addition.

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

mac80211: remove unused function

Remove the unused function is_ieee80211_device().

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

nl80211: specify RSSI threshold in scheduled scan

Support configuring an RSSI threshold in dBm (s32) when requesting
scheduled scan, below which a BSS won't be reported by the cfg80211
driver.

Signed-off-by: Thomas Pedersen <c_tpeder@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

NFC: Return from rawsock_release when sk is NULL

Sasha Levin reported following panic :

[ 2136.383310] BUG: unable to handle kernel NULL pointer dereference at
00000000000003b0
[ 2136.384022] IP: [<ffffffff8114e400>] __lock_acquire+0xc0/0x4b0
[ 2136.384022] PGD 131c4067 PUD 11c0c067 PMD 0
[ 2136.388106] Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
[ 2136.388106] CPU 1
[ 2136.388106] Pid: 24855, comm: trinity-child1 Tainted: G        W
3.5.0-rc2-sasha-00015-g7b268f7 #374
[ 2136.388106] RIP: 0010:[<ffffffff8114e400>]  [<ffffffff8114e400>]
__lock_acquire+0xc0/0x4b0
[ 2136.388106] RSP: 0018:ffff8800130b3ca8  EFLAGS: 00010046
[ 2136.388106] RAX: 0000000000000086 RBX: ffff88001186b000 RCX:
0000000000000000
[ 2136.388106] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000000000000
[ 2136.388106] RBP: ffff8800130b3d08 R08: 0000000000000001 R09:
0000000000000000
[ 2136.388106] R10: 0000000000000000 R11: 0000000000000001 R12:
0000000000000002
[ 2136.388106] R13: 00000000000003b0 R14: 0000000000000000 R15:
0000000000000000
[ 2136.388106] FS:  00007fa5b1bd4700(0000) GS:ffff88001b800000(0000)
knlGS:0000000000000000
[ 2136.388106] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2136.388106] CR2: 00000000000003b0 CR3: 0000000011d1f000 CR4:
00000000000406e0
[ 2136.388106] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 2136.388106] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[ 2136.388106] Process trinity-child1 (pid: 24855, threadinfo
ffff8800130b2000, task ffff88001186b000)
[ 2136.388106] Stack:
[ 2136.388106]  ffff8800130b3cd8 ffffffff81121785 ffffffff81236774
000080d000000001
[ 2136.388106]  ffff88001b9d6c00 00000000001d6c00 ffffffff130b3d08
ffff88001186b000
[ 2136.388106]  0000000000000000 0000000000000002 0000000000000000
0000000000000000
[ 2136.388106] Call Trace:
[ 2136.388106]  [<ffffffff81121785>] ? sched_clock_local+0x25/0x90
[ 2136.388106]  [<ffffffff81236774>] ? get_empty_filp+0x74/0x220
[ 2136.388106]  [<ffffffff8114e97a>] lock_acquire+0x18a/0x1e0
[ 2136.388106]  [<ffffffff836b37df>] ? rawsock_release+0x4f/0xa0
[ 2136.388106]  [<ffffffff837c0ef0>] _raw_write_lock_bh+0x40/0x80
[ 2136.388106]  [<ffffffff836b37df>] ? rawsock_release+0x4f/0xa0
[ 2136.388106]  [<ffffffff836b37df>] rawsock_release+0x4f/0xa0
[ 2136.388106]  [<ffffffff8321cfe8>] sock_release+0x18/0x70
[ 2136.388106]  [<ffffffff8321d069>] sock_close+0x29/0x30
[ 2136.388106]  [<ffffffff81236bca>] __fput+0x11a/0x2c0
[ 2136.388106]  [<ffffffff81236d85>] fput+0x15/0x20
[ 2136.388106]  [<ffffffff8321de34>] sys_accept4+0x1b4/0x200
[ 2136.388106]  [<ffffffff837c165c>] ? _raw_spin_unlock_irq+0x4c/0x80
[ 2136.388106]  [<ffffffff837c1669>] ? _raw_spin_unlock_irq+0x59/0x80
[ 2136.388106]  [<ffffffff837c2565>] ? sysret_check+0x22/0x5d
[ 2136.388106]  [<ffffffff8321de8b>] sys_accept+0xb/0x10
[ 2136.388106]  [<ffffffff837c2539>] system_call_fastpath+0x16/0x1b
[ 2136.388106] Code: ec 04 00 0f 85 ea 03 00 00 be d5 0b 00 00 48 c7 c7
8a c1 40 84 e8 b1 a5 f8 ff 31 c0 e9 d4 03 00 00 66 2e 0f 1f 84 00 00 00
00 00 <49> 81 7d 00 60 73 5e 85 b8 01 00 00 00 44 0f 44 e0 83 fe 01 77
[ 2136.388106] RIP  [<ffffffff8114e400>] __lock_acquire+0xc0/0x4b0
[ 2136.388106]  RSP <ffff8800130b3ca8>
[ 2136.388106] CR2: 00000000000003b0
[ 2136.388106] ---[ end trace 6d450e935ee18982 ]---
[ 2136.388106] Kernel panic - not syncing: Fatal exception in interrupt

rawsock_release() should test if sock->sk is NULL before calling
sock_orphan()/sock_put()

Reported-by: Sasha Levin <levinsasha928@gmail.com>
Tested-by: Sasha Levin <levinsasha928@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

iwlwifi: fix activating inactive stations

When authentication/association timed out, the driver would
complain bitterly, printing the message
ACTIVATE a non DRIVER active station id ... addr ...

The cause turns out to be that when the AP station is added
but we don't associate, the IWL_STA_UCODE_INPROGRESS is set
but never cleared. This then causes iwl_restore_stations()
to attempt to resend it because it uses the flag internally
and uploads even if it didn't set it itself.

To fix this issue and not upload the station again when it
has already been removed by mac80211, clear the flag after
adding it in case we add it only for association.

Cc: stable@vger.kernel.org
Reviewed-by: Meenakshi Venkataraman <meenakshi.venkataraman@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

wlcore: drop INET dependency

Mainline build reports:

warning: (WL12XX) selects WLCORE which has unmet direct dependencies (NETDEVICES && WLAN && WL_TI && GENERIC_HARDIRQS && MAC80211 && INET)

The INET dependency was added in commit
3c6af5b54fe74b6e56efadc22927e4055d00e9fc:
    wl1271_main.c:(.text+0x271052): undefined reference to `unregister_inetaddr_
notifier'
    wl1271_main.c:(.text+0x2714d7): undefined reference to `register_inetaddr_no
tifier'

    Driver is doing some filtering based on IP addresses...

but this driver no longer has that code and it builds fine even when
CONFIG_INET is not enabled, so drop that dependency and eliminate the
kconfig warning message.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Luciano Coelho <luciano.coelho@nokia.com>
Cc: John W. Linville <linville@tuxdriver.com>
Acked-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k: fix dynamic WEP related regression

commit 7a532fe7131216a02c81a6c1b1f8632da1195a58
ath9k_hw: fix interpretation of the rx KeyMiss flag

This commit used the rx key miss indication to detect packets that were
passed from the hardware without being decrypted, however it seems that
this bit is not only undefined in the static WEP case, but also for
dynamically allocated WEP keys. This caused a regression when using
WEP-LEAP.

This patch fixes the regression by keeping track of which key indexes
refer to CCMP keys and only using the key miss indication for those.

Reported-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Cc: stable@vger.kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>

NFC: Prevent multiple buffer overflows in NCI

Fix multiple remotely-exploitable stack-based buffer overflows due to
the NCI code pulling length fields directly from incoming frames and
copying too much data into statically-sized arrays.

Signed-off-by: Dan Rosenberg <dan.j.rosenberg@gmail.com>
Cc: stable@kernel.org
Cc: security@kernel.org
Cc: Lauro Ramos Venancio <lauro.venancio@openbossa.org>
Cc: Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: David S. Miller <davem@davemloft.net>
Acked-by: Ilan Elias <ilane@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

mac80211_hwsim: fix smatch/sparse complaints

The code is fine in both cases as-is, but we can
write it slightly differently to fix smatch/sparse
complaints:
 * compare the skb pointer (which we use as a cookie)
   by casting the skb to unsigned long rather than the
   cookie to a pointer (fixes "different address spaces")
 * when transmitting, data->channel must be assigned,
   don't check it (fixes "dereferenced before check")

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

mac80211: trace debug messages

It can be very useful to have all debug messages
available when debugging, but hard to correlate
between different sources, so add a trace event
for all mac80211 debug messages.

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

mac80211: rename driver-trace file

This file will contain more soon, so
rename it to just trace.

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

mac80211: clean up debugging

There are a few things that make the logging and
debugging in mac80211 less useful than it should
be right now:
 * a lot of messages should be pr_info, not pr_debug
 * wholesale use of pr_debug makes it require *both*
   Kconfig and dynamic configuration
 * there are still a lot of ifdefs
 * the style is very inconsistent, sometimes the
   sdata->name is printed in front

Clean up everything, introducing new macros and
separating out the station MLME debugging into
a new Kconfig symbol.

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

wlcore: prevent recovery in the middle of resume

Take the mutex early in the resume handler and use the locked version of
the IRQ routine. This ensures any recoveries queued will only take place
after resume has fully completed.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: refactor threaded IRQ routine

Separate the threaded IRQ handling routine into two functions.
The outer function takes the mutex and calls recovery on errors. It also
performs a Tx-path optimization to avoid redundant works.

The inner function is simplified - all calls to recovery are removed and
it assumes the lock is taken. The locked variant will be reused elsewhere.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: check Rx-filter functions in the suspend path

Propagate some missing return values for Rx-filter related functions.
This and makes sure we always fail the suspend in case of SDIO errors.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: force recovery on resume if suspended without recovering

If an error is detected after mac80211 is already suspended, the recovery
work will not be queued. This will leave the driver in a bad state on
resume.

Detect this in the resume op and re-queue a recovery.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: don't allow SDIO read/writes after failure

Set a flag and after the first read/write failure is encountered.
This flag will disallow further SDIO read/writes until op_stop() is
executed, which will clear all flags.

This prevents further errors from occurring, since one error usually
indicates that IO operations won't work anymore until the chip is
rebooted.  By blocking more calls, we avoid extra timeouts and having
to wait for them to occur.

[Added second paragraph explaining why the change is needed. -- Luca]

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: cancel suspend when recovery is pending

We wish to postpone suspend if recovery is pending. This will make sure
the FW is in a good state and perform wowlan wakeup.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: access the firmware memory via debugfs

Applications running in the user space needs access to the
memory of the chip. Examples of such access
- read/write global variables
- access to firmware log
- dump memory after firmware panic event

Arbitrary 4-bytes aligned location can be accessed by
read/write file wlcore/mem

[Check return value of wlcore_raw_read/write and wlcore_set_partition
calls as required by the recent IO changes. -- Luca]

Signed-off-by: Arkady Miasnikov <a-miasnikov@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

rtlwifi: Change debug level for deletion of an entry in CAM

When running in AP mode, the driver reports all deletions from CAM in
a cryptic manner that makes users think it is an error. change so that
the condition is only reported at higher-levels of debugging.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

ath9k_hw: fix smatch warning in ar9003_hw_spur_mitigate_mrc_cck

drivers/net/wireless/ath/ath9k/ar9003_phy.c:211
ar9003_hw_spur_mitigate_mrc_cck() error: potential NULL dereference
'spur_fbin_ptr'.

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

ath9k_hw: rename mrcCCKOff to fix smatch warning

Rename mrcCCKOff for better code readability and also fixes
the smatch warning.

drivers/net/wireless/ath/ath9k/ar9003_phy.c:982
ar9003_hw_ani_control() Error invalid range 1 to 0.

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

brcmsmac: fix NULL pointer crash in brcms_c_regd_init()

In the function brcms_c_regd_init() the channels are validated
against the device capabilities. This is done for both 2.4G and
5G band, but there are devices that are 2.4G only, ie. BCM4313.
For that device this leads to a NULL dereference. This patch adds
a check in brcms_c_regd_init() to fix this.

Issue introduced in wireless-next tree by following commit:
cf03c5d brcm80211: smac: inform mac80211 of the X2 regulatory domain

Cc: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

brcmfmac: make inclusion of vmalloc.h explicit fixing linux-next build

This patch fixes problem detected in linux-next build for powerpc
allyesconfig. The error message below is no longer observed:

  CC      drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.o
drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c: In function 'brcmf_sdio_dump_console':
drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c:3085: error: implicit declaration of function 'vzalloc'
drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c:3085: warning: assignment makes pointer from integer without a cast
drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c:3113: error: implicit declaration of function 'vfree'
make[2]: *** [drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.o] Error 1

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

mwifiex: enhance power save for USB and PCIe chipsets

FW will not explicitly notify about host sleep activation to the
host for USB and PCIe chipsets. Hence host should generate Host
Sleep Activated event as soon as Host Sleep parameters are
configured to FW successfully.

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: wake up main thread to handle Tx traffic if scan is delayed/aborted

This is a flaw in recently implemented logic to handle Tx traffic
and scan operation simultaneously. We missed to wakeup main thread
to handle Tx traffic if scan is delayed/aborted.

For some cards (SD8797, for example), firmware will send SLEEP event
if there is no activity for 50msec. While handling the SLEEP event,
main thread will be woken up and Tx packet gets sent hence. In worst
case Tx traffic will be delayed for 50msec.

For other cards, such as USB8797, firmware won't send SLEEP event.
So, Tx traffic gets stuck if no other event triggers the wakeup of
main thread.

This patch fixes above issues.

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: parse WPA IE and support WPA/WPA2 mixed mode for uAP

Add support for parsing WPA IE from beacon parameter of
cfg80211_ap_settings and set it to FW.

WPA/WPA2 mixed mode is supported with this patch.

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

Merge branch 'for-linville' of git://git./linux/kernel/git/luca/wl12xx

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

Merge branch 'for-john' of git://git.sipsolutions.net/mac80211-next

mwifiex: improve error path handling in usb.c

skb allocated during initialisation is reused for receiving
commands/events by USB interface. We miss to reset skb->data in
failure cases. This patch takes care of it.

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

mwifiex: fix bugs in event handling code

This patch ensures uniformity in event skb sent by interface code
(USB/PCIe/SDIO) which automatically fixes following bugs.

1) For USB interface, same buffer is reused for receiving cmd and
events from firmware. While handling events, we perform
skb_pull(skb, 4) to remove event header. Corresponding skb_push()
call is missing while submitting the buffer.
2) For PCIe interface, event skb is passed with event header.
Recently added uAP events EVENT_UAP_STA_ASSOC, EVENT_UAP_STA_DEAUTH
will not work for PCIe, as they assume event skb points to event body.

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

mwifiex: fix WPS eapol handshake failure

After association, STA will go through eapol handshake with WPS
enabled AP. It's observed that WPS handshake fails with some 11n
AP. The reason for the failure is that the eapol packet is sent
via 11n frame aggregation.

The eapol packet should be sent directly without 11n aggregation.

This patch fixes the problem by adding WPS session control while
dequeuing Tx packets for transmission.

Cc: "3.4.y" <stable@vger.kernel.org>
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: fix 11n rx packet drop issue

Currently we check the sequence number of last packet received
against start_win. If a sequence hole is detected, start_win is
updated to next sequence number.

Since the rx sequence number is initialized to 0, a corner case
exists when BA setup happens immediately after association. As
0 is a valid sequence number, start_win gets increased to 1
incorrectly. This causes the first packet with sequence number 0
being dropped.

Initialize rx sequence number as 0xffff and skip adjusting
start_win if the sequence number remains 0xffff. The sequence
number will be updated once the first packet is received.

Cc: "3.0.y, 3.1.y, 3.2.y, 3.3.y, 3.4.y" <stable@vger.kernel.org>
Signed-off-by: Stone Piao <piaoyun@marvell.com>
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Kiran Divekar <dkiran@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

mac80211: pass sdata to some RX functions

For better debugging, we would like to have
the sdata pointer available later, so pass
it into these functions.

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

mac80211: two small verbose debug cleanups

Two instances of CONFIG_MAC80211_VERBOSE_DEBUG
should be different, fix them.

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

mac80211: remove TKIP debug

The TKIP code hasn't been changed in a very long
time, so it seems unlikely that anyone really has
a need for the TKIP debug code. Remove it.

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

wlcore: Force checking of io functions' return values

All io functions' return values should be propagated and handled. Add a
__must_check annotation to verify that the return values are checked and
to avoid future mistakes.

Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: Propagate errors from wl1271_read_hwaddr

Propagate errors from wl1271_read_hwaddr. This function is only used
when reading the FW log (following a recovery), so don't read the FW log
in case of a bus error.

Also rename prefixes of wlcore functions which their prototypes had to
be changed.

Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: Propagate errors from wl1271_raw_write32

Propagate errors from wl1271_raw_write32 and request for recovery when
appropriate.
Also rename prefixes of wlcore functions which their prototypes had to
be changed.

Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: Propagate errors from wl1271_raw_read32

Propagate errors from wl1271_raw_read32. Since the read functions had no
way of returning errors in-band, change their prototypes.
Also rename prefixes of wlcore functions which their prototypes had to
be changed.

Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: Propagate errors from wl1271_write

Propagate errors from wl1271_write and request for recovery when
appropriate.
Also rename prefixes of wlcore functions which their prototypes had to
be changed.

Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: Propagate errors from wl1271_read

Propagate errors from wl1271_read and request for recovery when
appropriate.
Also rename prefixes of wlcore functions which their prototypes had to
be changed.

Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: Propagate errors from wlcore_raw_*_data functions

wlcore_raw_read_data is called when the FW status is read which happens
while handling interrupts and when the FW log is read following a
recovery. Request a recovery in the former case, and don't read the FW
log in case the FW status read failed.

Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: Change raw io functions to return errors

Make wl1271_raw_write and wl1271_raw_read return errors so the driver
could handle these appropriately.
Since the prototype has changed, also rename the prefix of these
functions to wlcore.

Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: Change read/write ops to return errors

While bus operations may fail, either due to HW or FW issues, these are
never propagated to higher layers. As a result, the core driver has no
way of knowing that the operations failed, and will only recover if high
level logic requires it (e.g. no command completion).

Change read/write bus operations to return errors to let higher layer
functionality handle these.

Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: Disable interrupts while recovering

In case a recovery is initiated, the FW can no longer be trusted, and
the driver should not handle any new FW events.

Disable the interrupt handler when a recovery is scheduled and balance
it back in the op_stop callback.

Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: Fix sdio out-of-sync power state

wl12xx_sdio_power_off() manually powers down the card regardless of the
runtime pm state. If wl12xx_sdio_power_on() is called before the card
was suspended by runtime PM, it will not power up the card.

As part of the HW detection, the chip's power is toggled. Since this
happens in the context of probing sdio, the power reference counter will
be higher than zero. As a result, when wl12xx_sdio_power_off() is
called, the chip will be powered down while still having a positive
power reference counter. If the interface is quickly activated, the
driver might try to transfer data to a powered off chip.

Fix this by ensuring that wl12xx_sdio_power_on() explicitly powers on
the chip in case runtime pm claims the chip is already powered on. To
avoid cases in which it is not possible to determine if the chip was
really powered on (card's power reference counter is positive), operate
on the mmc_card instead of the function.

Also verify that the chip is indeed powered on before powering off, to
avoid wrong reference counter values in error cases.

Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

mac80211: clear ifmgd->bssid only after building DELBA

ieee80211_set_disassoc() clears ifmgd->bssid before
building DELBA frames, resulting in frames with invalid
bssid ("00:00:00:00:00:00").

Fix it by clearing ifmgd->bssid only after building
all the needed frames.

After this change, we no longer need to save the
bssid (before clearing it), so remove the local array.

Reported-by: Ido Yariv <ido@wizery.com>
Cc: stable@vger.kernel.org
Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

ieee80211: more OUI type definitions for WLAN_OUI_MICROSOFT

WMM and WPS

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

mac80211: add command to get current rssi

Get current rssi (in dBm) from the driver/FW.

Instead of reporting the signal received in the last
rx packet, which might be inaccurate if rx traffic is
low and beacon filtering is enabled, get the signal
from the driver/FW.

Signed-off-by: Victor Goldenshtein <victorg@ti.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

Merge branch 'wl12xx-next' into for-linville

Conflicts:
drivers/net/wireless/ti/wl18xx/main.c

wl18xx: use %zu for size_t arguments in printk calls

After 934b9d1e (wl18xx: avoid some -Wformat warnings) there was still
a warning with (at least) ARM gcc version 4.4.1:

drivers/net/wireless/ti/wl18xx/main.c: In function 'wl18xx_conf_init':
drivers/net/wireless/ti/wl18xx/main.c:1026: warning: format '%ld' expects type 'long int', but argument 2 has type 'unsigned int'

Fix this by using %zu for the both formats, since the fw->size and the
macro (derived from sizeof()) are size_t.

Signed-off-by: Luciano Coelho <coelho@ti.com>

wl18xx: split siso40 HT cap between 2Ghz and 5Ghz

Remove the cap IEEE80211_HT_CAP_DSSSCCK40 from the 5Ghz variant of
the siso40 HT capabilities. It is meaningless in 5Ghz.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wl18xx: sane defaults for HT capabilities

Introduce a default set of HT capabilities that are set according to the
number of antennas on the board. Move the HT setting code down to allow
the number of antennas to be set (and optionally overridden) before it.

Remove the "mimo" HT option, since the default mode now enables MIMO is
possible.

Use this opportunity to add a helper function for setting HT
capabilities and reduce the volume of the code a bit.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wl18xx: explicitly remove the 5Ghz MIMO HT cap

The 18xx chip does not support MIMO in 5Ghz. Use the siso20 HT cap as
fallback in 5Ghz when "mimo" is requested.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: read FW logs from FW memory on watchdog recovery

FW uses a few memory blocks as a buffer to accumulate FW logs before
transmitting them to the host over SDIO. When FW WatchDog recovery
occurs, the last FW traces are still pending in the buffer. Driver is
to read these FW traces whether log mode is continuous or on demand.

FW memory blocks allocated for the log buffer are handled as a link list:
the first 4 bytes in each memory block contain FW address to the next block.
The end of list condition depends on FW log mode:
- on demand: the list is cyclic, the next address is equal to the first address
- continuous: the address is  equal to 0x2000000

Log data resides inside FW memory block with offset depending on
logger mode:
- on demand:  4 bytes (address of the next memory block)
- continuous: 4 bytes and Rx Descriptor structure size

Described FW logger API is backward compatible with previous FW versions.

Signed-off-by: Igal Chernobelsky <igalc@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wlcore: do not report noise level in get survey op

The get survey op expects the low level driver to report
the noise level for a a given channel.

The noise calculated in wlcore is (rssi-snr/2), but since
the snr reported by the FW is a derivative from the rssi
this calculation is useless, and should not be reported
to the user space.

Reporting incorrect noise, results in the wpa_supplicant
miscalculating the roaming candidate priority, thus causing
a situation where an AP with a lower rssi level would be
chosen over a better AP.

Signed-off-by: Yoni Divinsky <yoni.divinsky@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

wl18xx: set Tx align quirk for PG2

Before patch b5d6d9b (wlcore/wl12xx/wl18xx: don't use TX align quirk
for wl127x), this was automatically set for all platforms. As this
should now be set explicitly, set it for PG2 as well.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>