Граф коммитов

175 Коммитов

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Ingo Molnar b2d0910310 sched/headers: Prepare to use <linux/rcuupdate.h> instead of <linux/rculist.h> in <linux/sched.h>
We don't actually need the full rculist.h header in sched.h anymore,
we will be able to include the smaller rcupdate.h header instead.

But first update code that relied on the implicit header inclusion.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-03-02 08:42:38 +01:00
Masashi Honma 11197d006b mac80211: Suppress NEW_PEER_CANDIDATE event if no room
Previously, kernel sends NEW_PEER_CANDIDATE event to user land even if
the found peer does not have any room to accept other peer. This causes
continuous connection trials.

Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-12-13 16:05:11 +01:00
Bob Copeland efc401f49a mac80211: use common cleanup for user/!user_mpm
We've accumulated a couple of different fixes now to mesh_sta_cleanup()
due to the different paths that user_mpm and !user_mpm cases take -- one
fix to flush nexthop paths and one to fix the counting.

The only caller of mesh_plink_deactivate() is mesh_sta_cleanup(), so we
can push the user_mpm checks down into there in order to share more
code.

In doing so, we can remove an extra call to mesh_path_flush_by_nexthop()
and the (unnecessary) call to mesh_accept_plinks_update().  This will
also ensure the powersaving state code gets called in the user_mpm case.

The only cleanup tasks we need to avoid when MPM is in user-space
are sending the peering frames and stopping the plink timer, so wrap
those in the appropriate check.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2016-06-30 12:06:41 +02:00
Johannes Berg 57fbcce37b cfg80211: remove enum ieee80211_band
This enum is already perfectly aliased to enum nl80211_band, and
the only reason for it is that we get IEEE80211_NUM_BANDS out of
it. There's no really good reason to not declare the number of
bands in nl80211 though, so do that and remove the cfg80211 one.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-12 15:56:15 +02:00
Johannes Berg 0be6ed1338 mac80211: move averaged values out of rx_stats
Move the averaged values out of rx_stats and into rx_stats_avg,
to cleanly split them out. The averaged ones cannot be supported
for parallel RX in a per-CPU fashion, while the other values can
be collected per CPU and then combined/selected when needed.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-06 13:18:15 +02:00
Bob Copeland e596af8279 mac80211: mesh: flush paths outside of plink lock
Lockdep warned of a lock dependency between the mesh_plink lock
and the internal lock for the rhashtable.  The problem is that
the rhashtable code uses a spin lock with softirqs enabled, while
mesh_plink_timer executes a walk (to flush paths on a state change)
inside a softirq with the plink lock held.

This leads to the following deadlock if the timer fires while rht
lock is held on this CPU, and plink lock is held on another CPU:

   CPU0                         CPU1
   ----                         ----
   lock(&(&ht->lock)->rlock);
                                local_irq_disable();
                                lock(&(&sta->mesh->plink_lock)->rlock);
                                lock(&(&ht->lock)->rlock);
   <Interrupt>
   lock(&(&sta->mesh->plink_lock)->rlock);
   *** DEADLOCK ***

Fix by waiting until we drop the plink lock to flush paths.

Fixes: d48a1b7cd439 ("mac80211: mesh: convert path table to rhashtable")
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 21:34:54 +02:00
Sunil Shahu b8631c0033 mac80211: mesh_plink: remove redundant sta_info check
Remove unnecessory "if" statement and club it with previos "if" block.

Signed-off-by: Sunil Shahu <shshahu@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:04:25 +01:00
Matthias Schiffer 520c75dcae mac80211: fix crash on mesh local link ID generation with VIFs
llid_in_use needs to be limited to stations of the same VIF, otherwise it
will cause a NULL deref as the sta_info of non-mesh-VIFs don't have
sta->mesh set.

Steps to reproduce:

   modprobe mac80211_hwsim channels=2
   iw phy phy0 interface add ibss0 type ibss
   iw phy phy0 interface add mesh0 type mp
   iw phy phy1 interface add ibss1 type ibss
   iw phy phy1 interface add mesh1 type mp
   ip link set ibss0 up
   ip link set mesh0 up
   ip link set ibss1 up
   ip link set mesh1 up
   iw dev ibss0 ibss join foo 2412
   iw dev ibss1 ibss join foo 2412
   # Ensure that ibss0 and ibss1 are actually associated; I often need to
   # leave and join the cell on ibss1 a second time.
   iw dev mesh0 mesh join bar
   iw dev mesh1 mesh join bar # crash

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-11-03 10:43:40 +01:00
Johannes Berg e5a9f8d046 mac80211: move station statistics into sub-structs
Group station statistics by where they're (mostly) updated
(TX, RX and TX-status) and group them into sub-structs of
the struct sta_info.

Also rename the variables since the grouping now makes it
obvious where they belong.

This makes it easier to identify where the statistics are
updated in the code, and thus easier to think about them.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-10-21 10:08:22 +02:00
Bob Copeland c85fb53c4f mac80211: implement VHT support for mesh
Implement the basics required for supporting very high throughput
with mesh: include VHT information elements in beacons, probe
responses, and peering action frames, and check for compatible VHT
configurations when peering.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-09-22 15:21:25 +02:00
Johannes Berg 40d9a38ad3 mac80211: use DECLARE_EWMA
Instead of using the out-of-line average calculation, use the new
DECLARE_EWMA() macro to declare a signal EWMA, and use that.

This actually *reduces* the code size slightly (on x86-64) while
also reducing the station info size by 80 bytes.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-08-14 17:49:53 +02:00
Bob Copeland 0e0060fcfb mac80211: select an AID when creating new mesh STAs
Instead of using peer link id for AID, generate a new
AID when creating mesh STAs in the kernel peering manager.
This enables smaller TIM elements and more closely follows
the standard, and it also enables mesh to work on drivers
that require a valid AID when the STA is inserted (ath10k
firmware has this requirement, for example).

In the case of userspace-managed stations, we use the AID
from NL80211_CMD_NEW_STATION.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-07-17 15:47:58 +02:00
Bob Copeland a69bd8e60b mac80211: mesh: separate plid and aid concepts
According to 802.11-2012 13.3.1, a mesh STA should assign an AID
upon receipt of a mesh peering open frame rather than using the link
id of the peer.  Using the peer link id has two potential issues:
it may not be unique among the peers, and by its nature it is random,
so the TIM may not compress well.

In preparation for allocating it properly, use sta->sta.aid, but keep
the existing behavior of using the plid in the aid we send.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-07-17 15:47:11 +02:00
Bob Copeland fa87a6566c mac80211: reorder mesh_plink to remove forward decl
Move mesh_plink_frame_tx() above the first caller to remove
the forward declaration.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-07-17 15:47:02 +02:00
Johannes Berg 72bbe3d1c2 Merge branch 'mac80211' into mac80211-next
This is necessary to merge the new TDLS and mesh patches,
as they depend on some fixes.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-07-17 15:39:41 +02:00
Johannes Berg 433f5bc1c0 mac80211: move mesh related station fields to own struct
There are now a fairly large number of mesh fields that really
aren't needed in any other modes; move those into their own
structure and allocate them separately.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-07-17 15:38:06 +02:00
Bob Copeland b3e7de873d mac80211: add missing length check for confirm frames
Although mesh_rx_plink_frame() already checks that frames have enough
bytes for the action code plus another two bytes for capability/reason
code, it doesn't take into account that confirm frames also have an
additional two-byte aid.  As a result, a corrupt frame could cause a
subsequent subtraction to wrap around to ill effect.  Add another
check for this case.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-07-17 14:39:42 +02:00
Bob Copeland 2ea752cd2c mac80211: correct aid location in peering frames
According to 802.11-2012 8.5.16.3.2 AID comes directly after the
capability bytes in mesh peering confirm frames.  The existing
code, however, was adding a 2 byte offset to this location,
resulting in garbage data going out over the air.  Remove the
offset to fix it.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-07-17 14:38:10 +02:00
Alexis Green e060e7adc2 mac80211: Always check rates and capabilities in mesh mode
In mesh mode there is a race between establishing links and processing
rates and capabilities in beacons. This is very noticeable with slow
beacons (e.g. beacon intervals of 1s) and manifested for us as stations
using minstrel when minstrel_ht should be used. Fixed by changing
mesh_sta_info_init so that it always checks rates and such if it has not
already done so.

Signed-off-by: Alexis Green <agreen@cococorp.com>
CC: Jesse Jones <jjones@cococorp.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-06-09 22:05:06 +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
Bob Copeland 48bf6beddf mac80211: introduce plink lock for plink fields
The mesh plink code uses sta->lock to serialize access to the
plink state fields between the peer link state machine and the
peer link timer.  Some paths (e.g. those involving
mps_qos_null_tx()) unfortunately hold this spinlock across
frame tx, which is soon to be disallowed.  Add a new spinlock
just for plink access.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-20 13:05:29 +02:00
Janusz.Dziedzic@tieto.com abcff6ef01 mac80211: add VHT support for IBSS
Add VHT support for IBSS. Drivers could activate
this feature by setting NL80211_EXT_FEATURE_VHT_IBSS
flag.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-30 10:48:26 +02:00
Nicholas Mc Guire 0df2f6c118 mesh_plink: fixup type of timeout to match usage
timeout was being passed as int but assigned from u32/u16 values and used
as unsigned type. This is really only for better readability.

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-04 10:34:14 +01:00
Nicholas Mc Guire cc57ac536a mesh_plink: use msecs_to_jiffies for proper time conversion
This is primarily an API consolidation and should make things more readable
it replaces var * HZ / 1000 by msecs_to_jiffies(var) which also handles
corner cases correctly.

There is a change of behavior as e.g. for HZ 100, t * HZ / 1000 will
return 0 for t < 10 but msecs_to_jiffies will return at least 1 always.

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-04 10:34:13 +01:00
Bob Copeland 985e88b13a Revert "mac80211: keep sending peer candidate events while in listen state"
This reverts commit 2ae70efcea.

The new peer events that are generated by the change are causing problems
with wpa_supplicant in userspace: wpa_s tries to restart SAE authentication
with the peer when receiving the event, even though authentication may be in
progress already, and it gets very confused.

Revert back to the original operating mode, which is to only get events when
there is no corresponding station entry.

Cc: Nishikawa, Kenzoh <Kenzoh.Nishikawa@jp.sony.com>
Cc: Masashi Honma <masashi.honma@gmail.com>
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-01-23 10:57:19 +01:00
Nishikawa, Kenzoh 2ae70efcea mac80211: keep sending peer candidate events while in listen state
Instead of sending peer candidate events just once, send them as long
as the peer remains in the LISTEN state in the peering state machine,
when userspace is implementing the peering manager.
Userspace may silence the events from a peer by progressing the state
machine or by setting the link state to BLOCKED.

Fixes the problem that a mesh peering process won't be fired again after
the previous first peering trial fails due to like air propagation error
if the peering is managed by user space such as wpa_supplicant.

This patch works with another patch for wpa_supplicant described here
which fires a peering process again triggered by the notice from kernel.
http://lists.shmoo.com/pipermail/hostap/2014-November/031235.html

Signed-off-by: Kenzoh Nishikawa <Kenzoh.Nishikawa@jp.sony.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-12-17 11:49:24 +01:00
John W. Linville 61a3d4f9d5 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless 2014-09-08 11:14:56 -04:00
Bob Copeland f8134fed83 mac80211: mesh_plink: use get_unaligned_le16 instead of memcpy
Use get_unaligned_le16 to access llid/plid.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-08-26 11:15:34 +02:00
Bob Copeland 6c6fa49649 mac80211: mesh_plink: handle confirm frames with new plid
The 802.11 standard says when processing a plink confirm
frame:

"If the peerLinkID in the mesh peering instance has not been
set, the Local Link ID field of the Mesh Peering Confirm
request shall be copied into the peerLinkID in the mesh
peering instance."

We were only doing this when receiving an open peering frame,
but it could happen that the open frame gets lost and so we
should handle this case rather than rejecting the confirm and
failing the whole peering process.

Reported-by: Yu Niiro <yu.niiro@gmail.com>
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-08-26 11:12:55 +02:00
Johannes Berg a74a8c846f mac80211: don't duplicate station QoS capability data
We currently track the QoS capability twice: for all peer stations
in the WLAN_STA_WME flag, and for any clients associated to an AP
interface separately for drivers in the sta->sta.wme field.

Remove the WLAN_STA_WME flag and track the capability only in the
driver-visible field, getting rid of the limitation that the field
is only valid in AP mode.

Reviewed-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-08-15 14:38:08 +02:00
Bob Copeland 2b470c39e8 mac80211: remove ignore_plink_timer flag
The mesh_plink code is doing some interesting things with the
ignore_plink_timer flag.  It seems the original intent was to
handle this race:

cpu 0                           cpu 1
-----                           -----
                                start timer handler for state X
acquire sta_lock
change state from X to Y
mod_timer() / del_timer()
release sta_lock
                                acquire sta_lock
                                execute state Y timer too soon

However, using the mod_timer()/del_timer() return values to
detect these cases is broken.  As a result, timers get ignored
unnecessarily, and stations can get stuck in the peering state
machine.

Instead, we can detect the case by looking at the timer expiration.
In the case of del_timer, just ignore the timers in the following
(LISTEN/ESTAB) states since they won't have timers anyway.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-06-23 11:05:27 +02:00
Chun-Yeow Yeoh 6b5895d93d mac80211: enable WME for peer mesh STA
Enable the WME for peer mesh STA so that the driver,
such as wcn36xx, will pick this up and enabling it in HW.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-01-06 17:43:06 +01:00
Chun-Yeow Yeoh 6f101ef04b mac80211: use put_unaligned_le16 in mesh_plink_frame_tx
Use put_unaligned_le16 in mesh_plink_frame_tx.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 20:51:53 +01:00
Thomas Pedersen 204d130426 mac80211: clean up mesh local link ID generation
802.11-2012 13.3.1 implicitly limits the mesh local link
ID range to that of AID, since for mesh PS the local link
ID must be indicated in the TIM IE, which only holds
IEEE80211_MAX_AID bits.

Also the code was allowing a local link ID of 0, but this
is not correct since that TIM bit is used for indicating
buffered mcast frames.

Generate a random, unique, link ID from 1 - 2007, and drop
a modulo conversion for the local link ID, but keep it for
the peer link ID in case he chose something > MAX_AID.

Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 20:50:29 +01:00
Thomas Pedersen c99a89edb1 mac80211: factor out plink event gathering
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 20:50:26 +01:00
Thomas Pedersen c7e678115a mac80211: factor out peering FSM
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
[fix some indentation, squash llid assignment]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 20:50:23 +01:00
Thomas Pedersen 5bbdd6c646 mac80211: assign sta plid early
If we store the peer link ID right after initializing a
new neighbor, there is no need to do it later in the
peering FSM.

Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 20:50:20 +01:00
Thomas Pedersen fc10302ef1 mac80211: consolidate rcu unlocks in plink frame rx
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 20:50:18 +01:00
Thomas Pedersen 05a23ae927 mac80211: factor peering frame processing into own function
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 20:50:15 +01:00
Bob Copeland 87d84c452a mac80211: return -ENOMEM in mesh_plink_frame_tx
All other paths return an error code, do the same here.

Signed-off-by: Bob Copeland <bob@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 20:50:10 +01:00
Bob Copeland 272a9e2614 mac80211: mesh_plink: don't ignore holding timer
The ignore_plink_timer flag is set when doing mod_timer() if
the timer was not previously active.  This is to avoid executing
the timeout if del_timer() was subsequently called.  However,
del_timer() only happens if we are moving to ESTAB state or
get a close frame while in HOLDING.

We cannot leave HOLDING and re-enter ESTAB unless we receive a
close frame (in which case ignore_plink_timer is already set) or
if the timeout expires, so there actually isn't a case where
this is needed on mod_timer().

Signed-off-by: Bob Copeland <bob@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 20:50:07 +01:00
Bob Copeland 58506eba78 mac80211: mesh_plink: collapse the two switch statements together
The matches_local check can just be done when looking at the
individual action types.

Signed-off-by: Bob Copeland <bob@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 20:50:05 +01:00
Bob Copeland 36c9bb29bf mac80211: mesh: rewrite rssi_threshold_check in C
Use C instead of cpp for type checking.  Also swap the arguments
into the usual sdata -> sta order.

Signed-off-by: Bob Copeland <bob@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 20:50:01 +01:00
Bob Copeland 32cb05bfe8 mac80211: mesh_plink: group basic fitness checks
The initial frame checks differ depending on whether this is
a new peer or not, but they were all intermixed with sta checks
as necessary.  Group them together so the two cases are clearer.

Signed-off-by: Bob Copeland <bob@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 20:49:58 +01:00
Bob Copeland e76d67f035 mac80211: mesh: factor out common plink close/estab code
Reject and accepted close events always put the host in the
holding state and compute a reason code based only on the
current state.  Likewise on establish we always do the same
setup.  Put these in functions to save some duplicated code.

Signed-off-by: Bob Copeland <bob@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 20:49:55 +01:00
Bob Copeland 0f5ffd24fb mac80211: hold sta->lock across plink switch statements
Rather than unlock at the end of each case, do it once after
all is said and done.

Signed-off-by: Bob Copeland <bob@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 20:49:52 +01:00
Thomas Pedersen 4efec45134 mac80211: consolidate calls to plink_frame_tx
Do all frame transfers in one place at the end of the
big switch statements.  sta->plid and sta->reason can
be passed in any case, since they are only used for
the frames that need them.  Remove assignments to locals
for values already stored in the sta structure.

Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 20:49:50 +01:00
Bob Copeland 3cde38e7f3 mac80211: fix off-by-one in llid check.
According to IEEE 802.11-2012 (8.4.2.104), no peering
management element exists with length 7. This code is checking
to see if llid is present to ignore close frames with different
llid, which would be IEs with length 8.

Signed-off-by: Bob Copeland <bob@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-11-25 20:49:48 +01:00
Marco Porsch 446075d76b mac80211: fixes for mesh powersave logic
This patch fixes errors in the mesh powersave logic which
cause that remote peers do not get peer power mode change
notifications and mesh peer service periods (MPSPs) got
stuck.

When closing a peer link, set the (now invalid) peer-specific
power mode to 'unknown'.

Avoid overhead when local power mode is unchanged.

Reliably clear MPSP flags on peering status update.

Avoid MPSP flags getting stuck by not requesting a further
MPSP ownership if we already are an MPSP owner.

Signed-off-by: Marco Porsch <marco@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-10-28 15:05:26 +01:00
Simon Wunderlich 2103dec147 mac80211: select and adjust bitrates according to channel mode
The various components accessing the bitrates table must use consider
the used channel bandwidth to select only available rates or calculate
the bitrate correctly.

There are some rates in reduced bandwidth modes which can't be
represented as multiples of 500kbps, like 2.25 MBit/s in 5 MHz mode. The
standard suggests to round up to the next multiple of 500kbps, just do
that in mac80211 as well.

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Mathias Kretschmer <mathias.kretschmer@fokus.fraunhofer.de>
[make rate unsigned in ieee80211_add_tx_radiotap_header(), squash fix]
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2013-07-16 09:58:06 +03:00