platform/kernel/linux-exynos.git
9 years agoiwlwifi: mvm: declare TDLS support
Arik Nemtsov [Sun, 11 May 2014 15:13:04 +0000 (18:13 +0300)]
iwlwifi: mvm: declare TDLS support

The driver/FW combination now support TDLS.
Check the FW support with the TLV bit.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: pull SNAP header into skb->head
Johannes Berg [Thu, 13 Nov 2014 10:06:43 +0000 (11:06 +0100)]
iwlwifi: mvm: pull SNAP header into skb->head

When we pre-populate the skb->head for the stack, we only pull
in the 802.11 header including crypto (assuming the packet isn't
short enough to be in there completely.) This is fine, but in
ieee80211_data_to_8023() we later unconditionally pull 8 more
bytes for the SNAP header and ethertype field (except for mesh
or 4-addr, where it's even more, but we don't care as much about
them).

Avoid the additional later pull by pulling in those 8 bytes here.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: IdoX Yariv <ido@wizery.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: pull crypto header into skb->head
Johannes Berg [Wed, 12 Nov 2014 16:12:05 +0000 (17:12 +0100)]
iwlwifi: mvm: pull crypto header into skb->head

When we pre-populate the skb->head for the stack, we only pull
in the 802.11 header (assuming the packet isn't short enough to
be in there completely.) This is fine, but in many cases we'll
pull in the crypto headers pretty much immediately afterwards,
so to avoid that pull in the crypto header early.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: IdoX Yariv <ido@wizery.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: build mac80211 rx_status in place
Johannes Berg [Wed, 12 Nov 2014 15:45:12 +0000 (16:45 +0100)]
iwlwifi: build mac80211 rx_status in place

Instead of building the rx_status on the stack and then
copying it to the skb, allocate the skb a bit earlier
and then build the rx_status in place.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: IdoX Yariv <ido@wizery.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: add WEP RX hardware offload support
Johannes Berg [Wed, 12 Nov 2014 22:54:48 +0000 (23:54 +0100)]
iwlwifi: mvm: add WEP RX hardware offload support

In the original driver, we decided to not implement WEP RX hardware
offload because of a quirk with the firmware API - it allows setting
global WEP keys that then get used for all virtual interfaces, which
is clearly wrong if more than one exists, and it allows setting per-
station keys but then separates multicast and unicast keys.

In order to implement WEP RX hardware offload, work around these
limitations by uploading each WEP key twice, once as multicast and
once as unicast, but point them both to the same key slot (offset)
and use the same key material so the slot overwrite on the second
upload doesn't actually change anything. Upon removal, also remove
the key twice so the station no longer references it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: refactor key add/remove functions
Johannes Berg [Wed, 12 Nov 2014 22:39:56 +0000 (23:39 +0100)]
iwlwifi: mvm: refactor key add/remove functions

Refactor the key add/remove functions to be able to reuse parts
of them later for RX WEP keys, which need to be uploaded twice.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: add remove flow for AUX ROC time events
Matti Gottlieb [Sun, 16 Nov 2014 08:25:12 +0000 (10:25 +0200)]
iwlwifi: mvm: add remove flow for AUX ROC time events

Add a flow that handles the requests to cancel the roc time event,
that has been triggered via the aux framework.

The roc for bss is different than the roc for p2p devices, and  is done
via the aux framework using the aux queue, thus requires a different flow
to cancel the time event.

Signed-off-by: Matti Gottlieb <matti.gottlieb@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: remove warning on unknown scan complete
David Spinadel [Mon, 10 Nov 2014 09:16:53 +0000 (11:16 +0200)]
iwlwifi: mvm: remove warning on unknown scan complete

Remove warning on scan complete with unknown ID, since this
scan could be already cleared in abort flow.

Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: use unsigned for ssid_bitmap
Johannes Berg [Mon, 17 Nov 2014 14:06:52 +0000 (15:06 +0100)]
iwlwifi: mvm: use unsigned for ssid_bitmap

The ssid_bitmap should be unsigned, though it doesn't matter
much as the high bits aren't used.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: pcie: support 7265-D devices
Johannes Berg [Tue, 18 Nov 2014 14:39:51 +0000 (15:39 +0100)]
iwlwifi: pcie: support 7265-D devices

Identify 7265-D devices using the hardware revision (they have the
same PCI IDs as 7265) and change the configuration for them taking
the differences (currently only the firmware image) into account.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: pcie: support loading FW with extended mem range
Arik Nemtsov [Mon, 17 Nov 2014 13:46:37 +0000 (15:46 +0200)]
iwlwifi: pcie: support loading FW with extended mem range

Toggle the LMPM_CHICK register when writing chunks into the FW's extended
SRAM. This tells the FW to put the chunk into a different memory space.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: disable beacon filtering escape timer
Eliad Peller [Wed, 19 Nov 2014 11:57:52 +0000 (13:57 +0200)]
iwlwifi: mvm: disable beacon filtering escape timer

There is no reason to pass every 50th beacon if
nothing was changed.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: make nd_ies part of the mvm struct
Luciano Coelho [Mon, 10 Nov 2014 21:21:55 +0000 (23:21 +0200)]
iwlwifi: mvm: make nd_ies part of the mvm struct

Instead of allocating nd_ies separately, make it part of the iwl_mvm
structure so it's easier to handle its lifetime.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: pcie: properly reset the device
Emmanuel Grumbach [Fri, 14 Nov 2014 15:29:47 +0000 (07:29 -0800)]
iwlwifi: pcie: properly reset the device

We were toggling the wrong bit when we reset the device,
fix that. Moreover, since the reset can take time, we need
to wait before we set the rfkill interrupt. Not doing so
can be racy since the driver is enabling the rfkill
interrupt while the device is resetting which will clear
all the registers including the CSR_INT_MASK.
This can basically lead to a situation where we don't
enable the rfkill interrupt. If that happens, the user will
not be able to re-enable the device when de-asserting
rfkill.

This scenario happened to the submitter of:
https://bugzilla.kernel.org/show_bug.cgi?id=87191

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: support random MAC address for scanning
Johannes Berg [Tue, 18 Nov 2014 16:21:19 +0000 (17:21 +0100)]
iwlwifi: mvm: support random MAC address for scanning

For background and scheduled scan, using the new unified scan API,
support random MAC address scanning.

Unfortunately, the firmware right now doesn't support randomising
itself, so for now do it on the host - we'll change this once the
firmware supports randomising the address for each scan iteration
using the address/mask.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: go to umac scan even if lmac tlv bit is on
David Spinadel [Mon, 17 Nov 2014 10:30:05 +0000 (12:30 +0200)]
iwlwifi: mvm: go to umac scan even if lmac tlv bit is on

LMAC TLV bit may be on in FWs that support UMAC scan; so check
for UMAC TLV bit first.

Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: rs: consider a missing BA as a single tx failure
Eyal Shapira [Wed, 12 Nov 2014 11:30:20 +0000 (13:30 +0200)]
iwlwifi: mvm: rs: consider a missing BA as a single tx failure

The fw now indicates missing BA with ampdu_ack_len=0.

This will make the whole aggregation being marked
as failed, although it's most likely not the case (and
only the BA itself was failed).

Consider this case as a single tx failure.

Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: BT Coex - add support for TTC / RRC
Emmanuel Grumbach [Mon, 3 Nov 2014 09:43:15 +0000 (11:43 +0200)]
iwlwifi: mvm: BT Coex - add support for TTC / RRC

The TTC and RRC features are supported by the newer
firmwares. It allows to reach better overall WiFi and BT
performance. When the RRC is enabled, we don't need to force
the AP to send SISO frames, but it can keeps sending MIMO
frames.

Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: implement UMAC scan API
David Spinadel [Tue, 20 May 2014 09:46:37 +0000 (12:46 +0300)]
iwlwifi: mvm: implement UMAC scan API

This API uses second CPU scan commands, and can support multiple
simultaneous scans.

Adding the new API, and adding new mechanisms to deal with up to
8 simultaneous scans instead of the old scan status.

New scan API requires scan configuration for default scan parameters,
adding it in _up flow. Also updating scan configuration after updating
valid scan antennas via debugfs.

Signed-off-by: David Spinadel <david.spinadel@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: Fix the keep_alive calculation
Avri Altman [Tue, 11 Nov 2014 05:29:59 +0000 (07:29 +0200)]
iwlwifi: mvm: Fix the keep_alive calculation

The driver must set the keep alive period regardless of power
management state. The keep alive period must be greater or equal to
both the NIC's maximum sleep period, and the listen interval.
However, we were confusing time units (TU) and msec, so fix that.

Signed-off-by: Avri Altman <avri.altman@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: New skip over dtim policy
Avri Altman [Thu, 2 Oct 2014 17:46:16 +0000 (19:46 +0200)]
iwlwifi: mvm: New skip over dtim policy

Our firmware scheduler suffers from false wake-up on 500 time units.
that is if the dtim interval exceeds 500 time units, the fw wakes up,
understands that the next wake-up event is still ahead, and if this event
is more than 10msec in the future - goes back to sleep, otherwise - stay
awake.  For example, say that the beacon interval is 101 and the dtim
period is 5, the dtim interval is 101 x 5 = 505, and we will stay awake
for those extra 5msec.
So on the one hand the dtim interval should be congruent to the beacon
interval times the dtim period, and on the other should minimize
the false wake-ups event.
This change applies only to D0/D3 power modes.

Signed-off-by: Avri Altman <avri.altman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: move deferred d0i3 exit to resume_complete op
Eliad Peller [Mon, 20 Oct 2014 15:42:58 +0000 (18:42 +0300)]
iwlwifi: mvm: move deferred d0i3 exit to resume_complete op

The deferred d0i3 exit is currently implemented in the
resume op, which is called when mac80211 starts its
resume process.

However, mac80211 still doesn't handle frames at this stage,
which results in frames being dropped.

Move the deferred d0i3 handling to the reconfig_complete
callback, in order to make sure mac80211 is fully available
at this point.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: add support for WMM Access Control
Emmanuel Grumbach [Tue, 7 Oct 2014 07:38:53 +0000 (10:38 +0300)]
iwlwifi: mvm: add support for WMM Access Control

After the corresponding mac80211 patch, we can now report the airtime
used for each transmitted packet and mac80211 will be able to implement
WMM-AC with that information.

To support WMM-AC in the driver then, report the airtime and advertise
support.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: change max HT and VHT A-MPDU exponent
Eran Harary [Tue, 30 Sep 2014 04:42:06 +0000 (06:42 +0200)]
iwlwifi: change max HT and VHT A-MPDU exponent

Add two new parameters to iwl_cfg:
max_ht_ampdu_exponent and max_vht_ampdu_exponent.
These parameters, if set, will set new values to the maximum of
HT and VHT A-MPDU exponent for the A-MPDU length exponent.

Signed-off-by: Eran Harary <eran.harary@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoiwlwifi: mvm: Insert DS Parameter Set placeholder in probes
Andrei Otcheretianski [Tue, 2 Sep 2014 14:55:40 +0000 (17:55 +0300)]
iwlwifi: mvm: Insert DS Parameter Set placeholder in probes

Since it's too complicated for the fw to insert a DS Parameter Set
element in the middle of the frame, it was decided that it should be
done by the host. The fw will only parse the frame and update the
current channel field.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoMerge remote-tracking branch 'wireless-next/master' into iwlwifi-next
Emmanuel Grumbach [Sun, 23 Nov 2014 17:56:35 +0000 (19:56 +0200)]
Merge remote-tracking branch 'wireless-next/master' into iwlwifi-next

9 years agomwifiex: Add USB8766 support
Kristian Evensen [Thu, 20 Nov 2014 15:52:58 +0000 (16:52 +0100)]
mwifiex: Add USB8766 support

Adds new VID/PID for the Marvell 88W8766. The kernel currently only supports
the device as PCI, but it is also available using USB. An example of a device
delivered with the 88W8766 as USB is the Globalscale Mirabox.

TX buffer size is set to driver default (2K), as we do not know the firmware
requirement.

Signed-off-by: Kristian Evensen <kristian.evensen@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agonet: brcm80211: Deletion of unnecessary checks before two function calls
Markus Elfring [Thu, 20 Nov 2014 15:42:51 +0000 (16:42 +0100)]
net: brcm80211: Deletion of unnecessary checks before two function calls

The functions brcmu_pkt_buf_free_skb() and release_firmware() test whether
their argument is NULL and then return immediately. Thus the test around
the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoMerge tag 'mac80211-next-for-john-2014-11-20' of git://git.kernel.org/pub/scm/linux...
John W. Linville [Thu, 20 Nov 2014 21:09:30 +0000 (16:09 -0500)]
Merge tag 'mac80211-next-for-john-2014-11-20' of git://git./linux/kernel/git/jberg/mac80211-next

Johannes Berg <johannes@sipsolutions.net> says:

"It has been a while since my last pull request, so we accumulated
another relatively large set of changes:
 * TDLS off-channel support set from Arik/Liad, with some support
   patches I did
 * custom regulatory fixes from Arik
 * minstrel VHT fix (and a small optimisation) from Felix
 * add back radiotap vendor namespace support (myself)
 * random MAC address scanning for cfg80211/mac80211/hwsim (myself)
 * CSA improvements (Luca)
 * WoWLAN Net Detect (wake on network found) support (Luca)
 * and lots of other smaller changes from many people"

Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoath9k_common: make sure DEBUG_FS and RELAY enabled
Oleksij Rempel [Wed, 19 Nov 2014 11:30:28 +0000 (12:30 +0100)]
ath9k_common: make sure DEBUG_FS and RELAY enabled

currently ath9k_common depends on this components.

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoMerge commit '4e6ce4dc7ce71d0886908d55129d5d6482a27ff9' of git://git.kernel.org/pub...
John W. Linville [Wed, 19 Nov 2014 20:38:48 +0000 (15:38 -0500)]
Merge commit '4e6ce4dc7ce71d0886908d55129d5d6482a27ff9' of git://git./linux/kernel/git/linville/wireless

9 years agomac80211: minstrel_ht: add a small optimization to minstrel_aggr_check
Felix Fietkau [Sat, 15 Nov 2014 23:27:55 +0000 (00:27 +0100)]
mac80211: minstrel_ht: add a small optimization to minstrel_aggr_check

Check the queue mapping earlier, skb->queue_mapping is more likely than
skb->data to still be in d-cache.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211: notify drivers on sta rate table changes
Johannes Berg [Tue, 18 Nov 2014 23:10:42 +0000 (00:10 +0100)]
mac80211: notify drivers on sta rate table changes

This allows drivers with a firmware or chip-based rate lookup table to
use the most recent default rate selection without having to get it from
per-packet data or explicit ieee80211_get_tx_rate calls

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agonl80211: Broadcast CMD_NEW_INTERFACE and CMD_DEL_INTERFACE
Tomasz Bursztyka [Wed, 12 Nov 2014 14:26:45 +0000 (16:26 +0200)]
nl80211: Broadcast CMD_NEW_INTERFACE and CMD_DEL_INTERFACE

Let the other listeners being notified when a new or del interface
command has been issued, thus reducing later necessary request to be in
sync with current context.

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211-hwsim: Add HWSIM_CMD_GET_RADIO command
Patrik Flykt [Wed, 12 Nov 2014 14:42:40 +0000 (16:42 +0200)]
mac80211-hwsim: Add HWSIM_CMD_GET_RADIO command

HWSIM_CMD_GET_RADIO returns information about a specific radio id or
all of them in response to a dump. Create the netlink skb or use the
one provided by the dump functionality. Use the existing attribute
appending function to fill in the same attributes when creating a
new hwsim radio.

Save alpha2 and struct ieee80211_regdomain in the hwsim data or else
they will be lost in the depths of regulatory infrastructure.

Signed-off-by: Patrik Flykt <patrik.flykt@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211-hwsim: Factor out netlink attribute appending
Patrik Flykt [Wed, 12 Nov 2014 14:42:39 +0000 (16:42 +0200)]
mac80211-hwsim: Factor out netlink attribute appending

Factor out netlink message attribute appending in order to reuse it
with later code. As a result move netlink skb allocation to the
calling function.

Signed-off-by: Patrik Flykt <patrik.flykt@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agonl80211: Replace interface socket owner attribute with more generic one
Jukka Rissanen [Thu, 13 Nov 2014 15:25:14 +0000 (17:25 +0200)]
nl80211: Replace interface socket owner attribute with more generic one

Replace NL80211_ATTR_IFACE_SOCKET_OWNER attribute with more generic
NL80211_ATTR_SOCKET_OWNER that can be used with other commands
that interface creation.

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211-hwsim: remove unnecessary hwname check
Johannes Berg [Wed, 19 Nov 2014 17:51:55 +0000 (18:51 +0100)]
mac80211-hwsim: remove unnecessary hwname check

The hwname will always be set if idx is negative (as it's
a u32 read into an s64 it can't overflow either) so we can
remove the unnecessary check for hwname being non-NULL.

This was reported by smatch.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211-hwsim: hwname is always known so use the value from wiphy
Jukka Rissanen [Fri, 14 Nov 2014 11:16:34 +0000 (13:16 +0200)]
mac80211-hwsim: hwname is always known so use the value from wiphy

We can always know the hwname of the radio so use the value
from wiphy.

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agocfg80211: protect fools returning NULL in add_virtual_intf
Rafał Miłecki [Fri, 14 Nov 2014 17:43:28 +0000 (18:43 +0100)]
cfg80211: protect fools returning NULL in add_virtual_intf

Callback add_virtual_intf is supposed to return ERR_PTR and trying to
return NULL results in some "Unable to handle kernel paging request",
etc. As it may be complicated to debug & trace, let's catch it (WARN).

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agocfg80211: explicitly initialize some fields in custom reg path
Arik Nemtsov [Sun, 16 Nov 2014 14:37:47 +0000 (16:37 +0200)]
cfg80211: explicitly initialize some fields in custom reg path

Explicitly initialize the DFS state and beacon found state when handling
channels in the custom regulatory path.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Acked-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agocfg80211: update missing fields in custom regulatory path
Arik Nemtsov [Sun, 16 Nov 2014 14:37:46 +0000 (16:37 +0200)]
cfg80211: update missing fields in custom regulatory path

Some channels fields were not being updated in the custom regulatory
path. Update them according to the code in handle_channel().

Signed-off-by: Jonathan Doron <jonathanx.doron@intel.com>
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Acked-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211: skip legacy rate mask handling for VHT rates
Felix Fietkau [Sat, 15 Nov 2014 02:48:54 +0000 (03:48 +0100)]
mac80211: skip legacy rate mask handling for VHT rates

The rate mask code currently assumes that a rate is legacy if
IEEE80211_TX_RC_MCS is not set. This might be the cause of bogus VHT
rates being reported with minstrel_ht.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211: don't allow 40MHz tx rates in case of 20MHz chandef
Eliad Peller [Tue, 11 Nov 2014 16:11:22 +0000 (18:11 +0200)]
mac80211: don't allow 40MHz tx rates in case of 20MHz chandef

When 20MHz chandef is used, 40MHz rates shouldn't be
used (by the rate-control algorithm), even if the sta
ht capabilities indicate support for it.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Singed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211_hwsim: support scanning with random MAC address
Johannes Berg [Thu, 12 Jun 2014 20:41:00 +0000 (22:41 +0200)]
mac80211_hwsim: support scanning with random MAC address

This adds support for scanning with random MAC address for
both software and hardware scan.

Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211: allow drivers to support NL80211_SCAN_FLAG_RANDOM_ADDR
Johannes Berg [Thu, 12 Jun 2014 20:24:31 +0000 (22:24 +0200)]
mac80211: allow drivers to support NL80211_SCAN_FLAG_RANDOM_ADDR

Allow drivers to support NL80211_SCAN_FLAG_RANDOM_ADDR with software
based scanning and generate a random MAC address for them for every
scan request with the flag.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211: rcu-ify scan and scheduled scan request pointers
Johannes Berg [Wed, 19 Nov 2014 10:55:49 +0000 (11:55 +0100)]
mac80211: rcu-ify scan and scheduled scan request pointers

In order to use the scan and scheduled scan request pointers during
RX to check for randomisation, make them accessible using RCU.

Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agocfg80211: allow drivers to support random MAC addresses for scan
Johannes Berg [Thu, 12 Jun 2014 19:39:05 +0000 (21:39 +0200)]
cfg80211: allow drivers to support random MAC addresses for scan

Add the necessary feature flags and a scan flag to support using
random MAC addresses for scan while unassociated.

The configuration for this supports an arbitrary MAC address
value and mask, so that any kind of configuration (e.g. fixed
OUI or full 46-bit random) can be requested. Full 46-bit random
is the default when no other configuration is passed.

Also add a small helper function to use the addr/mask correctly.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211: remove redundant check
Eliad Peller [Wed, 12 Nov 2014 08:08:29 +0000 (10:08 +0200)]
mac80211: remove redundant check

local->scan_req was tested in the previous line, so it
can't be NULL.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agocfg80211: add wowlan net-detect support
Luciano Coelho [Wed, 17 Sep 2014 08:55:28 +0000 (11:55 +0300)]
cfg80211: add wowlan net-detect support

Add a new WoWLAN API to enable net-detect as a wake up trigger.
Net-detect allows the device to scan in the background while the
host is asleep to wake up the host system when a matching network
is found.

Reuse the scheduled scan attributes to specify how the scan is
performed while suspended and the matches that will trigger a
wake event.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agocfg80211: refactor nl80211_start_sched_scan so it can be reused
Luciano Coelho [Mon, 10 Nov 2014 14:13:46 +0000 (16:13 +0200)]
cfg80211: refactor nl80211_start_sched_scan so it can be reused

For net detect, we will need to reuse most of the scheduled scan
parsing function, but not all, so split out the attributes parsing
part out of the main start sched_scan function.

Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211: synchronously reserve TID per station
Liad Kaufman [Wed, 19 Nov 2014 11:47:38 +0000 (13:47 +0200)]
mac80211: synchronously reserve TID per station

In TDLS (e.g., TDLS off-channel) there is a requirement for
some drivers to supply an unused TID between the AP and the
device to the FW, to allow sending PTI requests and to allow
the FW to aggregate on a specific TID for better throughput.

To ensure that the allocated TID is indeed unused, this patch
introduces an API for blocking the driver from TXing on that
TID.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211: add specific-queue flushing support
Liad Kaufman [Sun, 9 Nov 2014 16:50:21 +0000 (18:50 +0200)]
mac80211: add specific-queue flushing support

If the HW supports IEEE80211_HW_QUEUE_CONTROL, allow
flushing only specific queues rather than all of them.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211: add TDLS channel-switch Rx flow
Arik Nemtsov [Sun, 9 Nov 2014 16:50:20 +0000 (18:50 +0200)]
mac80211: add TDLS channel-switch Rx flow

When receiving a TDLS channel switch request or response, parse the frame
and call a new tdls_recv_channel_switch op in the low level driver with
the parsed data.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211: introduce TDLS channel switch ops
Arik Nemtsov [Sun, 9 Nov 2014 16:50:19 +0000 (18:50 +0200)]
mac80211: introduce TDLS channel switch ops

Implement the cfg80211 TDLS channel switch ops and introduce new mac80211
ones for low-level drivers.
Verify low-level driver support for the new ops when using the relevant
wiphy feature bit. Also verify the peer supports channel switching before
passing the command down.

Add a new STA flag to track the off-channel state with the TDLS peer and
make sure to cancel the channel-switch if the peer STA is unexpectedly
removed.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211: add parsing of TDLS specific IEs
Arik Nemtsov [Sun, 9 Nov 2014 16:50:18 +0000 (18:50 +0200)]
mac80211: add parsing of TDLS specific IEs

These are used in TDLS channel switching code.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agocfg80211: introduce TDLS channel switch commands
Arik Nemtsov [Wed, 19 Nov 2014 10:54:26 +0000 (12:54 +0200)]
cfg80211: introduce TDLS channel switch commands

Introduce commands to initiate and cancel TDLS channel-switching. Once
TDLS channel-switching is started, the lower level driver is responsible
for continually initiating channel-switch operations and returning to
the base (AP) channel to listen for beacons from time to time.

Upon cancellation of the channel-switch all communication between the
relevant TDLS peers will continue on the base channel.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211: prepare TDLS mgmt code for channel-switch templates
Arik Nemtsov [Sun, 9 Nov 2014 16:50:16 +0000 (18:50 +0200)]
mac80211: prepare TDLS mgmt code for channel-switch templates

Split the data-generating from the Tx-sending functionality, as we do
not want to send templates to the lower driver. Also add an optional
chandef argument to the data-generating portion. It will be used for
channel-switch templates.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211: track AP and peer STA TDLS chan-switch support
Arik Nemtsov [Sun, 9 Nov 2014 16:50:15 +0000 (18:50 +0200)]
mac80211: track AP and peer STA TDLS chan-switch support

The AP or peer can prohibit TDLS channel switch via a bit in the
extended capabilities IE. Parse the IE and track this bit. Set an
appropriate STA flag if both the AP and peer STA support TDLS
channel-switching.

Add the new STA flag and the missing TDLS_INITIATOR to debugfs.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agocfg/mac80211: define TDLS channel switch feature bit
Arik Nemtsov [Sun, 9 Nov 2014 16:50:14 +0000 (18:50 +0200)]
cfg/mac80211: define TDLS channel switch feature bit

Define some related TDLS protocol constants and advertise channel switch
support in the extended-capabilities IE when the feature bit is defined.

Actually supporting TDLS channel-switching also requires support for
some new nl80211 commands, to be introduced by future patches.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211: add BSS coex IE to TDLS setup frames
Arik Nemtsov [Sun, 9 Nov 2014 16:50:13 +0000 (18:50 +0200)]
mac80211: add BSS coex IE to TDLS setup frames

Add the BSS coex IE in case we support HT40 channels, as mandated by
section 8.5.13 in IEEE802.11 2012.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211: add supported channels IE during TDLS setup
Arik Nemtsov [Sun, 9 Nov 2014 16:50:12 +0000 (18:50 +0200)]
mac80211: add supported channels IE during TDLS setup

This information element is mandatory in case TDLS channel-switching is to
be supported. The channels given are ones supported and allowed to be
active in the current regulatory setting.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211: add function to create data frame template including key
Johannes Berg [Sun, 9 Nov 2014 16:50:11 +0000 (18:50 +0200)]
mac80211: add function to create data frame template including key

For some TDLS channel switch implementations data frames need to be
sent by the firmware based on a template. This template should be
created by mac80211, and thus needs to properly be built from an
802.3 frame into an 802.11 frame. In addition, the device will need
the key information so the select_key handler needs to be run.
However, the driver/device will be responsible for all of the crypto
encapsulation, as the sequence numbers etc. cannot be built by the
host anyway in this case since it's a template to be used multiple
times.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211: factor out 802.11 header building code
Johannes Berg [Sun, 9 Nov 2014 16:50:10 +0000 (18:50 +0200)]
mac80211: factor out 802.11 header building code

Factor out the 802.11 header building code from the xmit function
to be able to use it separately in a later commit.

While at it, fix up some documentation.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211: move skb info band assignment out
Johannes Berg [Sun, 9 Nov 2014 16:50:09 +0000 (18:50 +0200)]
mac80211: move skb info band assignment out

Instead of passing the band as a parameter to ieee80211_xmit()
and ieee80211_tx(), move it outside of the two functions while
making sure info->band is set up before calling them.

This removes the parameter and simplifies the follow commit.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211: retransmit TDLS teardown packet through AP if not ACKed
Liad Kaufman [Sun, 9 Nov 2014 16:50:08 +0000 (18:50 +0200)]
mac80211: retransmit TDLS teardown packet through AP if not ACKed

Since the TDLS peer station might not receive the teardown
packet (e.g., when in PS), this makes sure the packet is
retransmitted - this time through the AP - if the TDLS peer
didn't ACK the packet.

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agomac80211: add option for setting skb flags before xmit
Liad Kaufman [Sun, 9 Nov 2014 16:50:07 +0000 (18:50 +0200)]
mac80211: add option for setting skb flags before xmit

Allows setting of an skb's flags - if needed - when calling
ieee80211_subif_start_xmit().

Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agoMerge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetoot...
John W. Linville [Tue, 18 Nov 2014 20:13:26 +0000 (15:13 -0500)]
Merge branch 'for-upstream' of git://git./linux/kernel/git/bluetooth/bluetooth-next

Johan Hedberg <johan.hedberg@gmail.com> says:

"Here's another bluetooth-next pull request for 3.19. We've got:

 - Various fixes, cleanups and improvements to ieee802154/mac802154
 - Support for a Broadcom BCM20702A1 variant
 - Lots of lockdep fixes
 - Fixed handling of LE CoC errors that should trigger SMP"

Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoMerge remote-tracking branch 'wireless-next/master' into mac80211-next
Johannes Berg [Tue, 18 Nov 2014 08:32:36 +0000 (09:32 +0100)]
Merge remote-tracking branch 'wireless-next/master' into mac80211-next

This brings in some mwifiex changes that further patches will
need to work on top to not cause merge conflicts.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
9 years agoBluetooth: Add support for Broadcom BCM20702A1 variant
Fabio K [Tue, 18 Nov 2014 02:46:28 +0000 (00:46 -0200)]
Bluetooth: Add support for Broadcom BCM20702A1 variant

This variant requires the flag BTUSB_BCM_PATCHRAM to work.

Relevant details from /sys/kernel/debug/usb/devices:

T:  Bus=01 Lev=02 Prnt=02 Port=04 Cnt=01 Dev#=  3 Spd=12   MxCh= 0
D:  Ver= 2.00 Cls=ff(vend.) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=13d3 ProdID=3404 Rev= 1.12
S:  Manufacturer=Broadcom Corp
S:  Product=BCM20702A0
S:  SerialNumber=240A646F1XXX
C:* #Ifs= 4 Cfg#= 1 Atr=e0 MxPwr=  0mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb
E:  Ad=81(I) Atr=03(Int.) MxPS=  16 Ivl=1ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=   0 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=   0 Ivl=1ms
I:  If#= 1 Alt= 1 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=   9 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=   9 Ivl=1ms
I:  If#= 1 Alt= 2 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  17 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  17 Ivl=1ms
I:  If#= 1 Alt= 3 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  25 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  25 Ivl=1ms
I:  If#= 1 Alt= 4 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  33 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  33 Ivl=1ms
I:  If#= 1 Alt= 5 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb
E:  Ad=83(I) Atr=01(Isoc) MxPS=  49 Ivl=1ms
E:  Ad=03(O) Atr=01(Isoc) MxPS=  49 Ivl=1ms
I:* If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
E:  Ad=84(I) Atr=02(Bulk) MxPS=  32 Ivl=0ms
E:  Ad=04(O) Atr=02(Bulk) MxPS=  32 Ivl=0ms
I:* If#= 3 Alt= 0 #EPs= 0 Cls=fe(app. ) Sub=01 Prot=01 Driver=(none)

The firmware was extracted from a Windows 8.1 64-bit installation
and converted from 'hex' to 'hcd' for use in Linux.

Under Windows it also identifies itself as BCM20702A0,
but the firmware is named "BCM20702A1_001.002.014.1315.1356.hex"
and is located in "%SYSTEMROOT%\system32\drivers\"
(md5 67cf6bfdae61c4bb819a66da984f7913)
(sha1 5f74cc6a9a3bf19ee0f8c3d01e4be34c609b188f)

The same firmware file is also available as a download at
http://www.asrock.com/mb/Intel/Z87E-ITX/?cat=Download&os=All
marked as "Bluetooth driver ver:12.0.0.7820"

'hcd' file should be placed at "brcm/BCM20702A0-13d3-3404.hcd"
inside the firmware directory (e.g. "/lib/firmware")

Signed-off-by: Fabio K <healthkit@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
9 years agoBluetooth: Call drain_workqueue() before resetting state
Johan Hedberg [Tue, 18 Nov 2014 07:00:14 +0000 (09:00 +0200)]
Bluetooth: Call drain_workqueue() before resetting state

Doing things like hci_conn_hash_flush() while holding the hdev lock is
risky since its synchronous pending work cancellation could cause the
L2CAP layer to try to reacquire the hdev lock. Right now there doesn't
seem to be any obvious places where this would for certain happen but
it's already enough to cause lockdep to start warning against the hdev
and the work struct locks being taken in the "wrong" order:

[  +0.000373] mgmt-tester/1603 is trying to acquire lock:
[  +0.000292]  ((&conn->pending_rx_work)){+.+.+.}, at: [<c104266d>] flush_work+0x0/0x181
[  +0.000270]
but task is already holding lock:
[  +0.000000]  (&hdev->lock){+.+.+.}, at: [<c13b9a80>] hci_dev_do_close+0x166/0x359
[  +0.000000]
which lock already depends on the new lock.

[  +0.000000]
the existing dependency chain (in reverse order) is:
[  +0.000000]
-> #1 (&hdev->lock){+.+.+.}:
[  +0.000000]        [<c105ea8f>] lock_acquire+0xe3/0x156
[  +0.000000]        [<c140c663>] mutex_lock_nested+0x54/0x375
[  +0.000000]        [<c13d644b>] l2cap_recv_frame+0x293/0x1a9c
[  +0.000000]        [<c13d7ca4>] process_pending_rx+0x50/0x5e
[  +0.000000]        [<c1041a3f>] process_one_work+0x21c/0x436
[  +0.000000]        [<c1041e3d>] worker_thread+0x1be/0x251
[  +0.000000]        [<c1045a22>] kthread+0x94/0x99
[  +0.000000]        [<c140f801>] ret_from_kernel_thread+0x21/0x30
[  +0.000000]
-> #0 ((&conn->pending_rx_work)){+.+.+.}:
[  +0.000000]        [<c105e158>] __lock_acquire+0xa07/0xc89
[  +0.000000]        [<c105ea8f>] lock_acquire+0xe3/0x156
[  +0.000000]        [<c1042696>] flush_work+0x29/0x181
[  +0.000000]        [<c1042864>] __cancel_work_timer+0x76/0x8f
[  +0.000000]        [<c104288c>] cancel_work_sync+0xf/0x11
[  +0.000000]        [<c13d4c18>] l2cap_conn_del+0x72/0x183
[  +0.000000]        [<c13d8953>] l2cap_disconn_cfm+0x49/0x55
[  +0.000000]        [<c13be37a>] hci_conn_hash_flush+0x7a/0xc3
[  +0.000000]        [<c13b9af6>] hci_dev_do_close+0x1dc/0x359
[  +0.012038]        [<c13bbe38>] hci_unregister_dev+0x6e/0x1a3
[  +0.000000]        [<c12d33c1>] vhci_release+0x28/0x47
[  +0.000000]        [<c10dd6a9>] __fput+0xd6/0x154
[  +0.000000]        [<c10dd757>] ____fput+0xd/0xf
[  +0.000000]        [<c1044bb2>] task_work_run+0x6b/0x8d
[  +0.000000]        [<c1001bd2>] do_notify_resume+0x3c/0x3f
[  +0.000000]        [<c140fa70>] work_notifysig+0x29/0x31
[  +0.000000]
other info that might help us debug this:

[  +0.000000]  Possible unsafe locking scenario:

[  +0.000000]        CPU0                    CPU1
[  +0.000000]        ----                    ----
[  +0.000000]   lock(&hdev->lock);
[  +0.000000]                                lock((&conn->pending_rx_work));
[  +0.000000]                                lock(&hdev->lock);
[  +0.000000]   lock((&conn->pending_rx_work));
[  +0.000000]
 *** DEADLOCK ***

Fully fixing this would require some quite heavy refactoring to change
how the hdev lock and hci_conn instances are handled together. A simpler
solution for now which this patch takes is to try ensure that the hdev
workqueue is empty before proceeding with the various cleanup calls,
including hci_conn_hash_flush().

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
9 years agoBluetooth: Use shorter "rand" name for "randomizer"
Johan Hedberg [Mon, 17 Nov 2014 18:52:20 +0000 (20:52 +0200)]
Bluetooth: Use shorter "rand" name for "randomizer"

The common short form of "randomizer" is "rand" in many places
(including the Bluetooth specification). The shorter version also makes
for easier to read code with less forced line breaks. This patch renames
all occurences of "randomizer" to "rand" in the Bluetooth subsystem
code.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
9 years agoBluetooth: Fix BR/EDR-only address checks for remote OOB data
Johan Hedberg [Mon, 17 Nov 2014 18:52:19 +0000 (20:52 +0200)]
Bluetooth: Fix BR/EDR-only address checks for remote OOB data

For now the mgmt commands dealing with remote OOB data are strictly
BR/EDR-only. This patch fixes missing checks for the passed address type
so that any non-BR/EDR value triggers the appropriate error response.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
9 years agoath9k: Move roc completion to the offchannel timer
Sujith Manoharan [Sun, 16 Nov 2014 00:41:10 +0000 (06:11 +0530)]
ath9k: Move roc completion to the offchannel timer

Currently, when a roc period expires, the offchannel
timer calls ieee80211_remain_on_channel_expired(), but
the roc state is cleared only when the queued work
to switch to the operating channel gets a chance to run.

This race is a problem because mac80211 can issue a
new roc request in this window. To avoid this, handle
roc completion in the offchannel timer itself.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoath9k: Adjust tbtt delta properly
Sujith Manoharan [Sun, 16 Nov 2014 00:41:09 +0000 (06:11 +0530)]
ath9k: Adjust tbtt delta properly

In a GO/STA setup, when we switch to the STA context,
the channel context timer is scheduled with a period of
half the beacon interval. If a beacon is received in
this duration, the timer is adjusted to accommodate
TSF sync done by the HW.

But, if the actual channel switch is delayed for some
reason, we end up rearming the timer every time a new
beacon is received. Avoid this by doing the adjustment
only once.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoath9k: Handle failure to send NoA
Sujith Manoharan [Sun, 16 Nov 2014 00:41:08 +0000 (06:11 +0530)]
ath9k: Handle failure to send NoA

If for some reason a beacon with a new NoA is
not sent out, then reset the mgd_prepare_tx flag.
Not doing this will result in a situation where
a GO will send a new NoA when it shouldn't.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoath9k: Cancel pending offchannel operations
Sujith Manoharan [Sun, 16 Nov 2014 00:41:07 +0000 (06:11 +0530)]
ath9k: Cancel pending offchannel operations

This patch makes sure that pending roc/scan
operations are cancelled properly when a new
context is assigned/unassigned.

The flush_work() call to flush out any scheduled
channel context work is removed, instead, sc->mutex
is dropped to allow any pending work to get a chance
to complete by the channel scheduler. Also, increase
the timeout to allow a switch to an active GO.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoath9k: Clear offchannel state properly
Sujith Manoharan [Sun, 16 Nov 2014 00:41:06 +0000 (06:11 +0530)]
ath9k: Clear offchannel state properly

When a pending roc or scan operation is cancelled,
the offchannel operation is cleared, but the offchannel
state in the main scheduler is not cleared. This causes
problems since an active GO will try to process a stale
offchannel request that was deferred earlier. Fix this
by clearing the state when there is no pending offchannel
(roc/scan) operation.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoath9k: Fix thermometer programming
Sujith Manoharan [Sun, 16 Nov 2014 00:41:05 +0000 (06:11 +0530)]
ath9k: Fix thermometer programming

The registers that control the on-chip thermometer
need to be programmed based on the chainmask that
the solution supports, not the chainmask that is
present in the eeprom.

Cc: Miaoqing Pan <miaoqing@qca.qualcomm.com>
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoath9k: Store the chip chainmask in HW capabilities
Sujith Manoharan [Sun, 16 Nov 2014 00:41:04 +0000 (06:11 +0530)]
ath9k: Store the chip chainmask in HW capabilities

Cc: Miaoqing Pan <miaoqing@qca.qualcomm.com>
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoath9k: Enable TSF2 for generic HW timers
Sujith Manoharan [Sun, 16 Nov 2014 00:41:03 +0000 (06:11 +0530)]
ath9k: Enable TSF2 for generic HW timers

The base TSF is used for HW timers 0..7, but chips
in the AR9003 family and above can support more generic
timers. To use them, however, a second HW TSF needs to
be enabled. This patch allows usage of the extra
timers by starting the second TSF properly.

The extra set of HW timers is apparently also present
in AR9287, but we enable it only for the AR9003 family.

Cc: Kobi Cohen-Arazi <kobic@qti.qualcomm.com>
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoath9k: Fix LED configuration
Sujith Manoharan [Sun, 16 Nov 2014 00:41:02 +0000 (06:11 +0530)]
ath9k: Fix LED configuration

On some x86 platforms, the LED gpio is active high
instead of active low. Identify such cards and modify
the GPIO usage to make sure LED works properly.

Cc: Russell Hu <rhu@qca.qualcomm.com>
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoath9k: Use new QCA953x initvals
Miaoqing Pan [Sun, 16 Nov 2014 00:41:01 +0000 (06:11 +0530)]
ath9k: Use new QCA953x initvals

This patch updates the initvals for QCA953x v1.1 and v2.0

Signed-off-by: Miaoqing Pan <miaoqing@qca.qualcomm.com>
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoath9k: Update QCA953x initvals
Sujith Manoharan [Sun, 16 Nov 2014 00:41:00 +0000 (06:11 +0530)]
ath9k: Update QCA953x initvals

* Duplicates have been marked.
* New initvals for 1.1 and 2.0 versions.
* xPA support.
* Fix for low power issue.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoath9k_htc: Enable software crypto for mgmt frame in Tx for USB devices
Chun-Yeow Yeoh [Sat, 15 Nov 2014 19:05:41 +0000 (03:05 +0800)]
ath9k_htc: Enable software crypto for mgmt frame in Tx for USB devices

In secured mesh, the unicast mgmt frame is encrypted using
the same key that used for encrypting the unicast data frame.
This patch "ath9k_htc_firmware: fix the offset of CCMP header
for mesh data frame" applied to open-ath9k-htc-firmware allows
the ath9k_htc to be loaded without "nohwcrypt=1". Unfortunately,
this is not working and we still need CCMP encryption of
transmitted management frames to be done in software.

So this patch allows the software encryption for transmitted
management frame to be done in software but remain the hardware
decryption for received management frame.

This patch is tested with the following hardwares:
- TP-Link TL-WN821N v3 802.11n [Atheros AR7010+AR9287]
- AR9271 802.11n

and managed to work with peer mesh STA equipped with ath9k.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoath9k|ath9k_htc: Seperate the software crypto flag for Tx and Rx
Chun-Yeow Yeoh [Sat, 15 Nov 2014 19:05:40 +0000 (03:05 +0800)]
ath9k|ath9k_htc: Seperate the software crypto flag for Tx and Rx

Use the sw_mgmt_crypto_tx flag to trigger the CCMP encryption
for transmitted management frames to be done in software while
the sw_mgmt_crypto_rx flag is used to trigger the CCMP decryption
for received management frames to be done in software.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agomwifiex: enable auto TDLS support for SD8887
Avinash Patil [Thu, 13 Nov 2014 16:24:18 +0000 (21:54 +0530)]
mwifiex: enable auto TDLS support for SD8887

Auto TDLS support is enabled per device. As of now add this
feature only for SD8887.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agomwifiex: support for parsing TDLS discovery frames
Avinash Patil [Thu, 13 Nov 2014 16:24:17 +0000 (21:54 +0530)]
mwifiex: support for parsing TDLS discovery frames

This patch adds support for parsing TDLS discovery
frames. After parsing, we update peer RSSI information.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agomwifiex: add auto TDLS support
Avinash Patil [Thu, 13 Nov 2014 16:24:16 +0000 (21:54 +0530)]
mwifiex: add auto TDLS support

This patch adds auto TDLS support to mwifiex.

Auto TDLS functionality works as follows:
1. Whenever userspace application has triggered TDLS connection with
any peer, driver would store this peer mac address details in its database.
2. After this driver whenever driver receives packet on direct link,
it would store rssi and timestamp in peer information.
3. Whenever a packet is to be transmitted to non-AP peer in station mode,
driver would check if TDLS link can be established by looking at peer RSSI
information. Driver would initiate TDLS setup in such cases.
4. Periodic timer is used for updating peer information.
5. Auto TDLS peer list & timer are cleared during disconnection or driver unload.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agomwifiex: wmm support for TDLS link
Avinash Patil [Thu, 13 Nov 2014 16:24:15 +0000 (21:54 +0530)]
mwifiex: wmm support for TDLS link

This patch adds WMM support for TDLS link. Patch
add WMM info IE for TDLS setup request/response frames
while WMM parameter for TDLS confirm frame.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agomwifiex: do not explicitly disable TDLS link during teardown
Avinash Patil [Thu, 13 Nov 2014 16:24:14 +0000 (21:54 +0530)]
mwifiex: do not explicitly disable TDLS link during teardown

When Teardown event from FW is indicated to userspace, userspace
would trigger tdls_oper handler to disable TDLS link.
We need not do this explicitly here.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agomwifiex: update rx packet descriptor structure to match FW
Avinash Patil [Thu, 13 Nov 2014 16:24:13 +0000 (21:54 +0530)]
mwifiex: update rx packet descriptor structure to match FW

RX packet descriptor structure has recently changed in FW.
This patch updates rxpd accordingly.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoath9k: fix the assignment of hw queues for mesh interface
Chun-Yeow Yeoh [Wed, 12 Nov 2014 08:40:19 +0000 (16:40 +0800)]
ath9k: fix the assignment of hw queues for mesh interface

We need to assign the hw queues for mesh interface. Otherwise,
we are not able to bring up the mesh interface due to the
IEEE80211_INVAL_HW_QUEUE error.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoath9k: common-spectral: don't depend from ATH9K_DEBUGFS
Oleksij Rempel [Wed, 12 Nov 2014 07:32:08 +0000 (08:32 +0100)]
ath9k: common-spectral: don't depend from ATH9K_DEBUGFS

we can have here two variants. Add
ATH9K_CMN_DEBUGFS y if ATH9K_CMN_DEBUGFS || ATH9K_HTC_DEBUGFS
wich will add more configurations and testcases. Or remove ATH9K_HTC_DEBUGFS
which need more time to be done.

So, make common-spectral ignore ATH9K_DEBUGFS option for now.

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoath9k_htc: ath9k_htc_op_ps_wakeup() can be static
kbuild test robot [Tue, 11 Nov 2014 22:24:17 +0000 (06:24 +0800)]
ath9k_htc: ath9k_htc_op_ps_wakeup() can be static

drivers/net/wireless/ath/ath9k/htc_drv_init.c:56:6: sparse: symbol 'ath9k_htc_op_ps_wakeup' was not declared. Should it be static?
drivers/net/wireless/ath/ath9k/htc_drv_init.c:61:6: sparse: symbol 'ath9k_htc_op_ps_restore' was not declared. Should it be static?
drivers/net/wireless/ath/ath9k/htc_drv_init.c:66:19: sparse: symbol 'ath9k_htc_ps_ops' was not declared. Should it be static?

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoath9k: ath9k_op_ps_wakeup() can be static
kbuild test robot [Tue, 11 Nov 2014 22:19:48 +0000 (06:19 +0800)]
ath9k: ath9k_op_ps_wakeup() can be static

drivers/net/wireless/ath/ath9k/init.c:91:6: sparse: symbol 'ath9k_op_ps_wakeup' was not declared. Should it be static?
drivers/net/wireless/ath/ath9k/init.c:96:6: sparse: symbol 'ath9k_op_ps_restore' was not declared. Should it be static?
drivers/net/wireless/ath/ath9k/init.c:101:19: sparse: symbol 'ath9k_ps_ops' was not declared. Should it be static?

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agomwifiex: module load parameter for interface creation
Avinash Patil [Wed, 5 Nov 2014 14:08:11 +0000 (19:38 +0530)]
mwifiex: module load parameter for interface creation

This patch adds module load parameter driver_mode for mwifiex
which would enable driver to create AP or P2P client interface while loading
module. driver_mode is bitmap of interface modes for station, AP and
P2P client.

Station interface is created by default and is unaffected by driver_mode
parameter.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoath9k: fix misc debugfs when not using chan context
Ben Greear [Tue, 4 Nov 2014 23:22:49 +0000 (15:22 -0800)]
ath9k: fix misc debugfs when not using chan context

When channel-context is not enabled, all vifs belong to
the first context, but it is not configured as 'assigned'.

Fix misc debugfs file to print out info for non-assigned
contexts, and also print whether ctx is assigned or not.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoMerge branch 'for-linville' of git://github.com/kvalo/ath
John W. Linville [Mon, 17 Nov 2014 20:28:39 +0000 (15:28 -0500)]
Merge branch 'for-linville' of git://github.com/kvalo/ath

Kalle Valo <kvalo@qca.qualcomm.com> says:

"One ath6kl patch and rest for ath10k, but nothing really major which
stands out. Most notable:

o fix resume (Bartosz)

o firmware restart is now faster and more reliable (Michal)

o it's now possible to test hardware restart functionality without
  crashing the firmware using hw-restart parameter with
  simulate_fw_crash debugfs file (Michal)"

Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agoath10k: fix mismatched wmi api call
Peter Oh [Mon, 17 Nov 2014 14:44:15 +0000 (16:44 +0200)]
ath10k: fix mismatched wmi api call

Fix to use v10.2 wmi call for firmware v10.2.
It turned out that peer association function was using
v10.1 wmi call for v10.2 firmware during code review.

Signed-off-by: Peter Oh <poh@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>