There's no need to declare the function in the
header file since it's only used in a single
place, so make it static.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

The channel switch IE has a fixed size, so we can
discard it in parsing if it's not the right size
and use the right struct pointer.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

The time until the channel switch is in TU,
not in milliseconds, so use TU_TO_EXP_TIME()
to correctly program the timer.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Clean up the CSA handling code by moving some
of it out of the if and using a C99 initializer
for the struct passed to the driver method.

While at it, also add a comment that we should
wait for a beacon after switching the channel.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

There's no need to copy the BSSID just to print
it, remove the unnecessary variable.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Support getting A-MPDU status information from the
drivers and reporting it to userspace via radiotap
in the standard fields.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Define the A-MPDU status field in radiotap, also
update the radiotap parser for it and the MCS field
that was apparently missed last time.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

In IBSS it is possible that the supported rates set for a station changes over
time (e.g. it gets first initialised as an empty set because of no available
information about rates and updated later). In this case the driver has to be
notified about the change in order to update its internal table accordingly (if
needed).

This behaviour is needed by all those drivers that handle rc internally but
leave stations management to mac80211
Reported-by: NGui Iribarren <gui@altermundi.net>
Signed-off-by: NAntonio Quartulli <ordex@autistici.org>
[Johannes - add docs, validate IBSS mode only, fix compilation]
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Use skb_queue_walk_safe instead, and fix a few issues:

	- didn't free old skbs on moving
	- didn't react to failed skb alloc
	- needlessly held a local pointer to the destination frame queue
	- didn't check destination queue length before adding skb
Signed-off-by: NThomas Pedersen <thomas@cozybit.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Since all we really want is just to iterate over all skbs, do just that
and avoid (de)queueing to a clusmy tmpq.
Signed-off-by: NThomas Pedersen <thomas@cozybit.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

This could take a while (100ms+) and may delay sending assoc resp
in AP mode with WPS or P2P GO (as setting the probe resp takes place
there). We've encountered situations where the delay was big enough
to cause connection problems with devices like Galaxy Nexus.
Switch to using call_rcu with a free handler.

[Arik - rework to use plain buffer and instead of skb]
Signed-off-by: NEyal Shapira <eyal@wizery.com>
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Although adding an IE is almost guaranteed to succeed since we already
accounted for its length while allocating the skb, we should still free
the skb in case of failure.
Signed-off-by: NThomas Pedersen <thomas@cozybit.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

It doesn't make a lot of sense to wait for an ack in response to a
peering close frame since either peer in this exchange could be going
down.
Signed-off-by: NThomas Pedersen <thomas@cozybit.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

This function was only used by mesh, and not really needed since any
interface-specific cleanup already happens in the netdev handlers.
Signed-off-by: NThomas Pedersen <thomas@cozybit.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

It is not necessary to stop the mesh beacon in the mac80211 ndo_stop
handler, since cfg80211 has already left the mesh on NETDEV_GOING_DOWN
notification.

Also some improvements to ieee80211_stop_mesh():

 - flush mpath entries.
 - flush sta entries per-sdata so we don't remove entries belonging to
   other vifs on the same hw.
Signed-off-by: NThomas Pedersen <thomas@cozybit.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

When associating anew, the old station MLME flags should
be cleared. The only exception is the 40 MHz disable
flag as it might have been set while the channel was set
in a previous authentication attempt so it needs to be
kept intact.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Instead of memset().
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Enable the carrier on WDS type interfaces only
after having added the station entry for the
WDS peer so outgoing frames will find it.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Instead of assuming the carrier is on all
the time in mesh manage it with joining
and leaving the mesh.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Since we only need the band, remove the channel
pointer from struct ieee80211_tx_data and also
assign it properly, depending on context, to the
correct operating or current channel.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

When sending probe requests, e.g. during software scanning,
these will go out on the *current* channel, so their IEs
need to be built from the current channel. At other times,
e.g. for beacons or probe request templates, the IEs will
be used on the *operating* channel and using the current
channel instead might result in errors.

Add the appropriate parameters to respect the difference.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Using hw.conf.channel is wrong as it could be the
temporary channel if any function like the beacon
get function is called while scanning or during
other temporary out-of-channel activities.

Use oper_channel instead.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Using hw.conf.channel is wrong as it could be the
temporary channel if any function like the beacon
get function is called while scanning or during
other temporary out-of-channel activities.

Use oper_channel instead.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Using hw.conf.channel is wrong as it could be the
temporary channel if any function like the beacon
get function is called while scanning or during
other temporary out-of-channel activities.

Use oper_channel instead.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Using hw.conf.channel is wrong as it could be the
temporary channel if any function like the beacon
get function is called while scanning or during
other temporary out-of-channel activities.

Use oper_channel instead.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

There's no need to set up the channel during auth
and again during assoc, just do it once. Currently
this doesn't result in any changes since calling
hw_config() with an unchanged channel will return
early, but with the channel context work this has
an impact on channel context assignment.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

In ieee80211_prep_connection(), the station (if not NULL)
is the new station (representing the AP) that needs to be
added. Rename the variable to "new_sta" to clarify this.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

If HT/VHT isn't supported by us we shouldn't print
a message that we disabled it, do that only if the
AP didn't support WMM and we therefore disable it.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Remove the control.sta pointer from ieee80211_tx_info to free up
sufficient space in the TX skb control buffer for the upcoming
Transmit Power Control (TPC).
Instead, the pointer is now on the stack in a new control struct
that is passed as a function parameter to the drivers' tx method.
Signed-off-by: NThomas Huehn <thomas@net.t-labs.tu-berlin.de>
Signed-off-by: NAlina Friedrichsen <x-alina@gmx.net>
Signed-off-by: NFelix Fietkau <nbd@openwrt.org>
[reworded commit message]
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Currently, ps mode is indicated per device (rather than
per interface), which doesn't make a lot of sense.

Moreover, there are subtle bugs caused by the inability
to indicate ps change along with other changes
(e.g. when the AP deauth us, we'd like to indicate
CHANGED_PS | CHANGED_ASSOC, as changing PS before
notifying about disassociation will result in null-packets
being sent (if IEEE80211_HW_SUPPORTS_DYNAMIC_PS) while
the sta is already disconnected.)

Keep the current per-device notifications, and add
parallel per-vif notifications.

In order to keep it simple, the per-device ps and
the per-vif ps are orthogonal - the per-vif ps
configuration is determined only by the user
configuration (enable/disable) and the connection
state, and is not affected by other vifs state and
(temporary) dynamic_ps/offchannel operations
(unlike per-device ps).
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

avoid using the skb CB for getting the appropriate sta.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Acked-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

There was a bug hiding here since the hlid was sometimes inferred from
the sta, which might be invalid at this point.

Instead, propagate the hlid from the skb-queue where we got the skb
in the first place.
Signed-off-by: NArik Nemtsov <arik@wizery.com>
Acked-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Remove ah-hoc IE search code found in the ieee80211_bss_get_ie()
and use cfg80211_find_ie() instead.
Signed-off-by: NVladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

This doesn't make any sense since we are expected to be on
the medium or at least to Tx only when we are on the right
channel and the AP/GO can hear us.

Move the call to mgd_prepare_tx() for deauth to be only
done in case we're sending a deauth while not associated.
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

If the HW is monitoring connection loss (as advertised
by IEEE80211_HW_CONNECTION_MONITOR) but not filtering
beacons (IEEE80211_VIF_BEACON_FILTER) then mac80211 will
still start the beacon loss timer and if a few beacons
are lost, e.g. due to scanning, drop the connection.

If the hardware doesn't advertise connection monitoring,
then it won't drop the connection right away but probe
the AP, which is intended, but due to the logic in the
timer when connection monitoring is done it assumes the
connection was actually lost.

Fix this problem by not starting the timer when the HW
does connection monitoring.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Insert VHT IEs into association frames to allow
mac80211 to connect as a VHT client.
Signed-off-by: NMahesh Palivela <maheshp@posedge.com>
[clarify commit message]
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Rate control is re-initialized whenever a beacon from a mesh
peer received, breaking the algorithms and resulting in low
performance. Return early from mesh_peer_init if we already
established a link with this peer to avoid this.
Signed-off-by: NChun-Yeow Yeoh <yeohchunyeow@gmail.com>
[clarify commit message]
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Pull ext4 updates from Ted Ts'o:
 "The usual collection of bug fixes and optimizations.  Perhaps of
  greatest note is a speed up for parallel, non-allocating DIO writes,
  since we no longer take the i_mutex lock in that case.

  For bug fixes, we fix an incorrect overhead calculation which caused
  slightly incorrect results for df(1) and statfs(2).  We also fixed
  bugs in the metadata checksum feature."

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (23 commits)
  ext4: undo ext4_calc_metadata_amount if we fail to claim space
  ext4: don't let i_reserved_meta_blocks go negative
  ext4: fix hole punch failure when depth is greater than 0
  ext4: remove unnecessary argument from __ext4_handle_dirty_metadata()
  ext4: weed out ext4_write_super
  ext4: remove unnecessary superblock dirtying
  ext4: convert last user of ext4_mark_super_dirty() to ext4_handle_dirty_super()
  ext4: remove useless marking of superblock dirty
  ext4: fix ext4 mismerge back in January
  ext4: remove dynamic array size in ext4_chksum()
  ext4: remove unused variable in ext4_update_super()
  ext4: make quota as first class supported feature
  ext4: don't take the i_mutex lock when doing DIO overwrites
  ext4: add a new nolock flag in ext4_map_blocks
  ext4: split ext4_file_write into buffered IO and direct IO
  ext4: remove an unused statement in ext4_mb_get_buddy_page_lock()
  ext4: fix out-of-date comments in extents.c
  ext4: use s_csum_seed instead of i_csum_seed for xattr block
  ext4: use proper csum calculation in ext4_rename
  ext4: fix overhead calculation used by ext4_statfs()
  ...

Pull ARM updates from Russell King:
 "First ARM push of this merge window, post me coming back from holiday.
  This is what has been in linux-next for the last few weeks.  Not much
  to say which isn't described by the commit summaries."

* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (32 commits)
  ARM: 7463/1: topology: Update cpu_power according to DT information
  ARM: 7462/1: topology: factorize the update of sibling masks
  ARM: 7461/1: topology: Add arch_scale_freq_power function
  ARM: 7456/1: ptrace: provide separate functions for tracing syscall {entry,exit}
  ARM: 7455/1: audit: move syscall auditing until after ptrace SIGTRAP handling
  ARM: 7454/1: entry: don't bother with syscall tracing on ret_from_fork path
  ARM: 7453/1: audit: only allow syscall auditing for pure EABI userspace
  ARM: 7452/1: delay: allow timer-based delay implementation to be selected
  ARM: 7451/1: arch timer: implement read_current_timer and get_cycles
  ARM: 7450/1: dcache: select DCACHE_WORD_ACCESS for little-endian ARMv6+ CPUs
  ARM: 7449/1: use generic strnlen_user and strncpy_from_user functions
  ARM: 7448/1: perf: remove arm_perf_pmu_ids global enumeration
  ARM: 7447/1: rwlocks: remove unused branch labels from trylock routines
  ARM: 7446/1: spinlock: use ticket algorithm for ARMv6+ locking implementation
  ARM: 7445/1: mm: update CONTEXTIDR register to contain PID of current process
  ARM: 7444/1: kernel: add arch-timer C3STOP feature
  ARM: 7460/1: remove asm/locks.h
  ARM: 7439/1: head.S: simplify initial page table mapping
  ARM: 7437/1: zImage: Allow DTB command line concatenation with ATAG_CMDLINE
  ARM: 7436/1: Do not map the vectors page as write-through on UP systems
  ...