Commit Graph

694 Commits

Author SHA1 Message Date
Janusz.Dziedzic@tieto.com b115b97299 mac80211: add new IEEE80211_VIF_GET_NOA_UPDATE flag
Add new VIF flag, that will allow get NOA update
notification when driver will request this, even
this is not pure P2P vif (eg. STA vif).

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-04 14:43:32 +01:00
Eliad Peller ef044763a3 mac80211: add atomic uploaded keys iterator
add ieee80211_iter_keys_rcu() to iterate over uploaded
keys in atomic context (when rcu is locked)

The station removal code removes the keys only after
calling synchronize_net(), so it's not safe to iterate
the keys at this point (and postponing the actual key
deletion with call_rcu() might result in some
badly-ordered ops calls).

Add a flag to indicate a station is being removed,
and skip the configured keys if it's set.

Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-04 14:43:32 +01:00
Emmanuel Grumbach 0ead2510f8 mac80211: allow the driver to send EOSP when needed
This can happen when the driver needs to send less frames
than expected and then needs to close the SP.
Mac80211 still needs to set the more_data properly based
on its buffer state (ps_tx_buffer and buffered frames on
other TIDs).
To that end, refactor the code that delivers frames upon
uAPSD trigger frames to be able to get only the more_data
bit without actually delivering those frames in case the
driver is just asking to set a NDP with EOSP and MORE_DATA
bit properly set.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-04 14:43:32 +01:00
Johannes Berg 3110489117 mac80211: allow driver to prevent two stations w/ same address
Some devices or drivers cannot deal with having the same station
address for different virtual interfaces, say as a client to two
virtual AP interfaces. Rather than requiring each driver with a
limitation like that to enforce it, add a hardware flag for it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-04 14:43:32 +01:00
Gregory Greenman ac0621971a mac80211: always set the buf_size in AddBA req to 64
Advertising reordering window in ADDBA less than 64 can crash some APs,
an example is LinkSys WRT120N (with FW v1.0.07 build 002 Jun 18 2012).
On the other hand, a driver may need to limit Tx A-MPDU size for its own
reasons, like specific HW limitations.

Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-11-20 11:39:40 +01:00
Chaitanya T K dcae9e0203 mac80211: document sleep requirements for channel context ops
Channel context driver operations can sleep, so add might_sleep()
and document this.

Signed-off-by: Chaitanya T K <chaitanya.mgit@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-11-03 11:15:48 +01:00
Johannes Berg e86abc689c cfg80211/mac80211: clarify RSSI CQM reporting requirements
The previous patch changed mac80211 to always report an event
after a CQM RSSI reconfiguration. Document that as expected
behaviour in both the cfg80211 and mac80211 API.

Currently, iwlmvm already implements that behaviour; the other
drivers implementing CQM RSSI events may have to be changed.

This behaviour lets userspace know what the current state is
without relying on querying the data which is racy.

Reviewed-by: Sharon, Sara <sara.sharon@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-11-03 10:54:58 +01:00
Johannes Berg 4a733ef1be mac80211: remove PM-QoS listener
As this API has never really seen any use and most drivers don't
ever use the value derived from it, remove it.

Change the only driver using it (rt2x00) to simply use the DTIM
period instead of the "max sleep" time.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-10-14 18:04:08 +02:00
Tamizh chelvam 93f0490e5d Revert "mac80211: remove exposing 'mfp' to drivers"
This reverts commit 5c48f12017.

Some device drivers (ath10k) offload part of aggregation including AddBA/DelBA
negotiations to firmware. In such scenario, the PMF configuration of
the station needs to be provided to driver to enable encryption of
AddBA/DelBA action frames.

Signed-off-by: Tamizh chelvam <c_traja@qti.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-10-13 10:29:11 +02:00
David S. Miller 2579c98f0d For the current cycle, we have the following right now:
* many internal fixes, API improvements, cleanups, etc.
  * full AP client state tracking in cfg80211/mac80211 from Ayala
  * VHT support (in mac80211) for mesh
  * some A-MSDU in A-MPDU support from Emmanuel
  * show current TX power to userspace (from Rafał)
  * support for netlink dump in vendor commands (myself)
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Merge tag 'mac80211-next-for-davem-2015-10-05' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg says:

====================
For the current cycle, we have the following right now:
 * many internal fixes, API improvements, cleanups, etc.
 * full AP client state tracking in cfg80211/mac80211 from Ayala
 * VHT support (in mac80211) for mesh
 * some A-MSDU in A-MPDU support from Emmanuel
 * show current TX power to userspace (from Rafał)
 * support for netlink dump in vendor commands (myself)
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-07 04:29:18 -07:00
Helmut Schaa 35afa58862 mac80211: Copy tx'ed beacons to monitor mode
When debugging wireless powersave issues on the AP side it's quite helpful
to see our own beacons that are transmitted by the hardware/driver. However,
this is not that easy since beacons don't pass through the regular TX queues.

Preferably drivers would call ieee80211_tx_status also for tx'ed beacons
but that's not always possible. Hence, just send a copy of each beacon
generated by ieee80211_beacon_get_tim to monitor devices when they are
getting fetched by the driver.

Also add a HW flag IEEE80211_HW_BEACON_TX_STATUS that can be used by
drivers to indicate that they report TX status for beacons.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
(with a fix from Christian Lamparted rolled in)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-09-29 15:56:33 +02:00
Johannes Berg 5359d112dc Revert "mac80211: add pointer for driver use to key"
This reverts commit f9a060f4b2.

No driver has turned up needing this functionality, and I've just
implemented the functionality I wanted this for in a different
way. Thus, remove it again, until somebody shows up with a need
for having it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-09-22 15:21:28 +02:00
Emmanuel Grumbach 99e7ca44bb mac80211: allow the driver to advertise A-MSDU within A-MPDU Rx support
Drivers may be interested in receiving A-MSDU within A-MDPU.
Not all the devices may be able to do so, make it configurable.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-09-22 15:21:24 +02:00
Emmanuel Grumbach e3abc8ff0f mac80211: allow to transmit A-MSDU within A-MPDU
Advertise the capability to send A-MSDU within A-MPDU
in the AddBA request sent by mac80211. Let the driver
know about the peer's capabilities.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-09-22 15:21:23 +02:00
Andrei Otcheretianski 1b09b5568e mac80211: introduce per vif frame registration API
Currently the cfg80211's frame registration api receives wdev, however
mac80211 assumes per device filter configuration and ignores wdev.
Per device filtering is too wasteful, especially for multi-channel
devices.
Introduce new per vif frame registration API and use it for probe
request registrations in ieee80211_mgmt_frame_register()
Also call directly to ieee80211_configure_filter instead of using a work
since it is now allowed to sleep in ieee80211_mgmt_frame_register.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-09-22 15:21:22 +02:00
Avri Altman 22f66895e6 mac80211: protect non-HT BSS when HT TDLS traffic exists
HT TDLS traffic should be protected in a non-HT BSS to avoid
collisions. Therefore, when TDLS peers join/leave, check if
protection is (now) needed and set the ht_operation_mode of
the virtual interface according to the HT capabilities of the
TDLS peer(s).

This works because a non-HT BSS connection never sets (or
otherwise uses) the ht_operation_mode; it just means that
drivers must be aware that this field applies to all HT
traffic for this virtual interface, not just the traffic
within the BSS. Document that.

Signed-off-by: Avri Altman <avri.altman@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-09-04 14:25:46 +02:00
Johannes Berg 4b58c37bb9 mac80211: remove ieee80211_aes_cmac_calculate_k1_k2()
The iwlwifi driver was the only driver that used this, but as
it turns out it never needed it, so we can remove it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-08-13 11:31:45 +02:00
Johannes Berg f9a060f4b2 mac80211: add pointer for driver use to key
Some drivers may need to store data per key, for example for PN
validation. Allow this by adding a pointer to the struct that
the driver can assign.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-07-17 15:38:22 +02:00
Arik Nemtsov b98fb44ffc mac80211: define TDLS wider BW support bits
Allow a device to specify support for the TDLS wider-bandwidth feature.
Indicate this support during TDLS setup in the ext-capab IE and set an
appropriate station flag when our TDLS peer supports it.
This feature gives TDLS peers the ability to use a wider channel than
the base width of the BSS. For instance VHT capable TDLS peers connected
on a 20MHz channel can extend the channel to 80MHz, if regulatory
considerations allow it.

Do not cap the bandwidth of such stations by the current BSS channel width
in mac80211.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-07-17 15:38:11 +02:00
Johannes Berg 981d94a801 mac80211: support device/driver PN check for CCMP/GCMP
When there are multiple RX queues, the PN checks in mac80211 cannot be
used since packets might be processed out of order on different CPUs.

Allow the driver to report that the PN has been checked, drivers that
will use multi-queue RX will have to set this flag.

For now, the flag is only valid when the frame has been decrypted, in
theory that restriction doesn't have to be there, but in practice the
hardware will have decrypted the frame already.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-07-17 15:38:02 +02:00
Johannes Berg 0c028b5fd1 mac80211: remove zero-length A-MPDU subframe reporting
As there's no driver using this capability and reporting zero-length
A-MPDU subframes for radiotap monitoring, remove the capability to
free up two RX flags.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-07-17 15:38:00 +02:00
Johannes Berg af9f9b22be mac80211: don't store napi struct
When introducing multiple RX queues, a single NAPI struct will not
be sufficient. Instead of trying to store multiple, simply change
the API to have the NAPI struct passed to the RX function. This of
course means that drivers using rx_irqsafe() cannot use NAPI, but
that seems a reasonable trade-off, particularly since only two of
all drivers are currently using it at all.

While at it, we can now remove the IEEE80211_RX_REORDER_TIMER flag
again since this code path cannot have a napi struct anyway.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-07-17 15:37:59 +02:00
Johannes Berg 5c48f12017 mac80211: remove exposing 'mfp' to drivers
There's no driver using this, so remove it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-07-17 15:37:52 +02:00
Johannes Berg 30686bf7f5 mac80211: convert HW flags to unsigned long bitmap
As we're running out of hardware capability flags pretty quickly,
convert them to use the regular test_bit() style unsigned long
bitmaps.

This introduces a number of helper functions/macros to set and to
test the bits, along with new debugfs code.

The occurrences of an explicit __clear_bit() are intentional, the
drivers were never supposed to change their supported bits on the
fly. We should investigate changing this to be a per-frame flag.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-10 16:05:36 +02:00
Jakub Kicinski c2d3955ba3 mac80211: remove obsolete sentence from documentation
FIF_PROMISC_IN_BSS was removed in commit df1404650c
("mac80211: remove support for IFF_PROMISC").

Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-09 21:48:20 +02:00
Johannes Berg c526a46767 mac80211: rename single hw-scan flag to follow naming convention
The naming convention is to always have the flags prefixed with
IEEE80211_HW_ so they're 'namespaced', make this flag follow it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-02 20:32:00 +02:00
Johannes Berg ea1b2b45f5 mac80211: remove short slot/short preamble incapable flags
There are no drivers setting IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE
or IEEE80211_HW_2GHZ_SHORT_PREAMBLE_INCAPABLE, so any code using the
two flags is dead; it's also exceedingly unlikely that any new driver
could ever need to set these flags.

The wcn36xx code is almost certainly broken, but this preserves the
previous behaviour.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-02 20:28:58 +02:00
Johannes Berg 3b79af973c mac80211: stop using pointers as userspace cookies
Even if the pointers are really only accessible to root and used
pretty much only by wpa_supplicant, this is still not great; even
for debugging it'd be easier to have something that's easier to
read and guaranteed to never get reused.

With the recent change to make mac80211 create an ack_skb for the
mgmt-tx path this becomes possible, only the client probe method
needs to also allocate an ack_skb, and we can store the cookie in
that skb.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-02 13:07:59 +02:00
Johannes Berg db388a567f mac80211: move TX PN to public part of key struct
For drivers supporting TSO or similar features, but that still have
PN assignment in software, there's a need to have some memory to
store the current PN value. As mac80211 already stores this and it's
somewhat complicated to add a per-driver area to the key struct (due
to the dynamic sizing thereof) it makes sense to just move the TX PN
to the keyconf, i.e. the public part of the key struct.

As TKIP is more complicated and we won't able to offload it in this
way right now (fast-xmit is skipped for TKIP unless the HW does it
all, and our hardware needs MMIC calculation in software) I've not
moved that for now - it's possible but requires exposing a lot of
the internal TKIP state.

As an bonus side effect, we can remove a lot of code by assuming the
keyseq struct has a certain layout - with BUILD_BUG_ON to verify it.

This might also improve performance, since now TX and RX no longer
share a cacheline.

Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-02 11:16:35 +02:00
Johannes Berg f8bdbb5847 mac80211: add missing drv_priv description for TXQ struct
The kernel-doc description for the drv_priv member of
struct ieee80211_txq was missing, leading to errors.
Add a suitable description to fix that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-05-20 15:04:53 +02:00
Johannes Berg a31cf1c69e mac80211: extend get_key() to return PN for all ciphers
For ciphers not supported by mac80211, the function currently
doesn't return any PN data. Fix this by extending the driver's
get_key_seq() a little more to allow moving arbitrary PN data.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-05-06 13:30:00 +02:00
Johannes Berg 9352c19f63 mac80211: extend get_tkip_seq to all keys
Extend the function to read the TKIP IV32/IV16 to read the IV/PN for
all ciphers in order to allow drivers with full hardware crypto to
properly support this.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-05-06 13:29:59 +02:00
Johannes Berg f5c4ae0799 mac80211: make LED trigger names const
This is just a code cleanup, make the LED trigger names const
as they're not expected to be modified by drivers.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-05-05 14:21:55 +02:00
Emmanuel Grumbach b497de63ad mac80211: notify the driver on reordering buffer timeout
When frames time out in the reordering buffer, it is a
good indication that something went wrong and the driver
may want to know about that to take action or trigger
debug flows.
It is pointless to notify the driver about each frame that
is released. Notify each time the timer fires.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-24 12:25:01 +02:00
Emmanuel Grumbach 6382246e89 mac80211: notify the driver upon BAR Rx
When we receive a BAR, this typically means that our peer
doesn't hear our Block-Acks or that we can't hear its
frames. Either way, it is a good indication that the link
is in a bad condition. This is why it can serve as a probe
to the driver.
Use the event_callback callback for this.
Since more events with the same data will be added in the
feature, the structure that describes the data attached to
the event is called in a generic name: ieee80211_ba_event.

This also means that from now on, the event_callback can't
sleep.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-24 12:25:00 +02:00
Johannes Berg df1404650c mac80211: remove support for IFF_PROMISC
This support is essentially useless as typically networks are encrypted,
frames will be filtered by hardware, and rate scaling will be done with
the intended recipient in mind. For real monitoring of the network, the
monitor mode support should be used instead.

Removing it removes a lot of corner cases.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-24 11:14:13 +02:00
Johannes Berg 680a0daba7 mac80211: allow drivers to support S/G
If drivers want to support S/G (really just gather DMA on TX) then
we can now easily support this on the fast-xmit path since it just
needs to write to the ethernet header (and already has a check for
that being possible.)

However, disallow this on the regular TX path (which has to handle
fragmentation, software crypto, etc.) by calling skb_linearize().

Also allow the related HIGHDMA since that's not interesting to the
code in mac80211 at all anyway.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-22 11:25:30 +02:00
Johannes Berg 17c18bf880 mac80211: add TX fastpath
In order to speed up mac80211's TX path, add the "fast-xmit" cache
that will cache the data frame 802.11 header and other data to be
able to build the frame more quickly. This cache is rebuilt when
external triggers imply changes, but a lot of the checks done per
packet today are simplified away to the check for the cache.

There's also a more detailed description in the code.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-22 10:02:25 +02:00
Jonathan Corbet a839e463e8 mac80211: Fix mac80211.h docbook comments
A couple of enums in mac80211.h became structures recently, but the
comments didn't follow suit, leading to errors like:

  Error(.//include/net/mac80211.h:367): Cannot parse enum!
  Documentation/DocBook/Makefile:93: recipe for target 'Documentation/DocBook/80211.xml' failed
  make[1]: *** [Documentation/DocBook/80211.xml] Error 1
  Makefile:1361: recipe for target 'mandocs' failed
  make: *** [mandocs] Error 2

Fix the comments comments accordingly.  Added a couple of other small
comment fixes while I was there to silence other recently-added docbook
warnings.

Reported-by: Jim Davis <jim.epost@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-20 13:05:30 +02:00
Johannes Berg 29464ccc78 cfg80211: move IE split utilities here from mac80211
As the next patch will require the IE splitting utility functions
in cfg80211, move them there from mac80211.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-07 13:56:41 +02:00
Felix Fietkau ba8c3d6f16 mac80211: add an intermediate software queue implementation
This allows drivers to request per-vif and per-sta-tid queues from which
they can pull frames. This makes it easier to keep the hardware queues
short, and to improve fairness between clients and vifs.

The task of scheduling packet transmission is left up to the driver -
queueing is controlled by mac80211. Drivers can only dequeue packets by
calling ieee80211_tx_dequeue. This makes it possible to add active queue
management later without changing drivers using this code.

This can also be used as a starting point to implement A-MSDU
aggregation in a way that does not add artificially induced latency.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
[resolved minor context conflict, minor changes, endian annotations]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-01 20:44:34 +02:00
Johannes Berg 527871d720 mac80211: make sta.wme indicate whether QoS is used
Indicating just the peer's capability is fairly pointless
if the local device doesn't support it. Make the variable
track both combined, and remove the 'local support' check
in the TX path.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-30 10:47:16 +02:00
Emmanuel Grumbach a90faa9d64 mac80211: notify the driver about deauth
This can allow the driver to take action based on the reason
of the deauth.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-30 10:17:12 +02:00
Emmanuel Grumbach d0d1a12f9c mac80211: notify the driver about association status
This can allow the driver to take action based on the
success / failure of the association.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-30 10:17:11 +02:00
Emmanuel Grumbach a9409093d2 mac80211: notify the driver about authentication status
This can allow the driver to take action based on the
success / failure of the authentication.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-30 10:17:10 +02:00
Emmanuel Grumbach a818292952 mac80211: convert rssi_callback() to event_callback()
We will be able to add more events, such as MLME events and
others. The low level driver may be interested in knowing
about these events to dump firmware data upon failures, or
to change parameters in case connection attempts fail etc...

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-30 10:17:09 +02:00
Emmanuel Grumbach dc5a1ad7bd mac80211: allow to get wireless_dev structure from ieee80211_vif
This will allow mac80211 drivers to call cfg80211 APIs with
the right handle.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-16 09:30:30 +01:00
SenthilKumar Jegadeesan 64a8cef41a mac80211: provide station PMF configuration to driver
Some device drivers offload part of aggregation including AddBA/DelBA
negotiations to firmware. In such scenario, the PMF configuration of
the station needs to be provided to driver to enable encryption of
AddBA/DelBA action frames.

Signed-off-by: SenthilKumar Jegadeesan <sjegadee@qti.qualcomm.com>
[fix commit log, documentation]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-04 10:34:12 +01:00
Arik Nemtsov 3384d757d4 mac80211: allow iterating inactive interfaces
Sometimes the driver might want to modify private data in interfaces
that are down. One possible use-case is cleaning up interface state
after HW recovery. Some interfaces that were up before the recovery took
place might be down now, but they might still be "dirty".

Introduce a new iterate_interfaces() API and a new ACTIVE iterator flag.
This way the internal implementation of the both active and inactive
APIs remains the same.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-04 10:34:12 +01:00
Alexander Bondar 2ecc3905e6 mac80211: Update beacon's timing and DTIM count on every beacon
Beacon's timestamp, device system time associated with this beacon and
DTIM count parameters are not updated in the associated vif context
if the latest beacon's content is identical to the previously received.
It make sense to update these changing parameters on every beacon so the
driver can get most updated values. This may be necessary, for example,
to avoid either beacons' drift effect or device time stamp overrun.
IMPORTANT: Three sync_* parameters - sync_ts, sync_device_ts and
sync_dtim_count would possibly be out of sync by the time the driver will
use them. The synchronized view is currently guaranteed only in certain
callbacks.

Signed-off-by: Alexander Bondar <alexander.bondar@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-03 15:56:06 +01:00