mac80211 calls synchronize_rcu() on sta deletion,
which increase the roaming time significantly.

Convert it into a call_rcu() mechanism, in order
to avoid blocking. Since some of the cleanup
functions might sleep, schedule from the call_rcu
callback a new work that will do the actual cleanup.

In order to make sure the cleanup occurs before
the interface went down, flush local->workqueue
on ieee80211_do_stop().
Signed-off-by: NYoni Divinsky <yoni.divinsky@ti.com>
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Mark keys that might be used to receive management
frames so drivers can fall back on software crypto
for them if they don't support hardware offload.
As the new flag is only set correctly for RX keys
and the existing IEEE80211_KEY_FLAG_SW_MGMT flag
can only affect TX, also rename the latter to
IEEE80211_KEY_FLAG_SW_MGMT_TX.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Whenever a host gets an AUTH frame it first allocates a new
station and then replies with another AUTH frame. However,
if sta allocations fails the host should send a DEAUTH frame
instead to tell the other end that something went wrong.
Signed-off-by: NAntonio Quartulli <ordex@autistici.org>
[reword commit message a bit]
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Move ieee80211_send_deauth_disassoc() to util.c to make it
available for the rest of the mac80211 code.
Signed-off-by: NAntonio Quartulli <ordex@autistici.org>
[reword commit message]
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

removes unnecessary semicolon

Found by Coccinelle: http://coccinelle.lip6.fr/Signed-off-by: NPeter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Split functionality for further reuse.

Will prevent code duplication when channel context
channel_type merging is introduced.
Signed-off-by: NMichal Kazior <michal.kazior@tieto.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

__ieee80211_key_destroy() calls synchronize_rcu() in
order to sync the tx path before destroying the key.

However, synching the tx path can be done with
synchronize_net() as well, which is usually faster
(the timing might be important for roaming scenarios).
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

The power constraint IE is always a single byte
so check the size when parsing instead of later.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

These should be with the functions so move
the module_init/exit statements.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

There are a number of functions that shouldn't really
be used when modern functions that take the band are
available in cfg80211. Remove these, but for now keep
 * ieee80211_freq_to_dsss_chan and
 * ieee80211_dsss_chan_to_freq
as they're used in older drivers.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Disconnect from the AP if channel switching in the
driver failed or if the new channel is unavailable.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

There's no need to keep a copy of the scheduled
scan IEs after the driver has been told, if it
requires a copy it must make one. Therefore, we
can move sched_scan_ies into the function.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Pull in mac80211.git to let the next patch apply
without conflicts, also resolving a hwsim conflict.

Conflicts:
	drivers/net/wireless/mac80211_hwsim.c
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Using list_move() instead of list_del() + list_add().

spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

checkpatch pointed out an issue, fix it.
Signed-off-by: NHila Gonen <hila.gonen@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

The wext code checks is the event data is within size limits.
When this check fails a message is logged with violating size.
This patch adds the event id to put us on the right track for
resolving that violation.
Reviewed-by: NHante Meuleman <meuleman@broadcom.com>
Signed-off-by: NArend van Spriel <arend@broadcom.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Various small fixes for net/mac80211/cfg.c:mpath_set_pinfo():
Initialize *pinfo before filling members in, handle MESH_PATH_RESOLVED
correctly, and remove bogus assignment; result in correct display
of FLAGS values and meaningful EXPTIME for expired paths in iw utility.
Signed-off-by: NYoichi Shinoda <shinoda@jaist.ac.jp>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Doing so creates warnings, but the function is internal and
not part of the 802.11 docbooks, so it from kerneldoc.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Signed-off-by: NRobert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Using list_move_tail() instead of list_del() + list_add_tail().
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

connkeys is malloced in nl80211_parse_connkeys() and should
be freed in the error handling case, otherwise it will cause
memory leak.

spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

ifmgd->bssid wasn't cleared properly in some
auth/assoc failure cases, causing mac80211 and
the low-level driver to go out of sync.

Clear ifmgd->bssid on failure, and notify the driver.

Cc: stable@kernel.org # 3.4+
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

A P2P Device interface does not have a netdev, and is not
expected to be used for transmitting data, so there is no
need to assign hw queues for it.
Signed-off-by: NIlan Peer <ilan.peer@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Commit mac80211: avoid using synchronize_rcu in ieee80211_set_probe_resp
changed the return value when the probe response template is not present.
Revert to the earlier value of 1 - this fixes AP mode for drivers like
ath9k.
Signed-off-by: NSujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

The destination address of unicast frames forwarded through a mesh gate
was being replaced with the broadcast address. Instead leave the
original destination address as the mesh DA. If the nexthop address is
not in the mpath table it will be resolved. If that fails, the frame
will be forwarded to known mesh gates.
Reported-by: NCedric Voncken <cedric.voncken@acksys.fr>
Signed-off-by: NThomas Pedersen <thomas@cozybit.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

Because the hardware reports whenever an frame
was either at the start, in the middle or at
the end of a A-MPDU, we can easily report the
information for radiotap.
Signed-off-by: NChristian Lamparter <chunkeey@googlemail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

In case of changes in the supported rates set for a given station, it is now
possible to use this callback to update the current internal state of the
station in the htc driver.
Reported-by: NGui Iribarren <gui@altermundi.net>
Signed-off-by: NAntonio Quartulli <ordex@autistici.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

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

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

Conflicts:
	drivers/net/wireless/mac80211_hwsim.c

This reverts commit 2e48928d.

Those functions are needed and should not be removed, or
there is no way to set the rfkill led trigger name.
Signed-off-by: NAceLan Kao <acelan.kao@canonical.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

When unregistered with mac80211, we can't call its functionality
for FW restart, so avoid it and prevent automatic FW restart for
the init firmware.
Signed-off-by: NAmit Beka <amit.beka@intel.com>
Reviewed-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

There is no need to check if the ownership has been
relinquished but we should rather try to get it in a
loop.
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

There's no need to carry around a return value
that is always NETDEV_TX_OK anyway.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

In multi-channel scenarios, the channel that we will
transmit a probe request on isn't always the current
channel (which will be NULL anyway) but will instead
be the channel that the AP is on. Pass the channel
to the ieee80211_send_probe_req() function so it can
be used in the different scenarios. The scan code
continues to pass the current channel, of course.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

There's no need to BUG_ON when a driver registers
invalid operations, warn and return an error.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>

The optimisation of scanning only on the current
channel should check the operating channel. Also
modify it to compare channel pointer rather than
the frequency.
Signed-off-by: NJohannes Berg <johannes.berg@intel.com>