Vasanthakumar Thiagarajan [Fri, 18 Jan 2013 05:48:45 +0000 (11:18 +0530)]
cfg80211/nl80211: add API for MAC address ACLs
Add API to enable drivers to implement MAC address based
access control in AP/P2P GO mode. Capable drivers advertise
this capability by setting the maximum number of MAC
addresses in such a list in wiphy->max_acl_mac_addrs.
An initial ACL may be given to the NL80211_CMD_START_AP
command and/or changed later with NL80211_CMD_SET_MAC_ACL.
Black- and whitelists are supported, but not simultaneously.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
[rewrite commit log, many cleanups]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Vasanthakumar Thiagarajan [Fri, 18 Jan 2013 05:48:44 +0000 (11:18 +0530)]
cfg80211: Move the definition of struct mac_address up
struct mac_address will be used by ACL related configuration ops.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Arnd Bergmann [Fri, 25 Jan 2013 14:14:33 +0000 (14:14 +0000)]
mac80211: avoid a build warning
gcc cannot prove that the value of sdata->vif.type does not
change between the switch() statement and the second
comparison to NL80211_IFTYPE_AP, causing a harmless
warning.
Slightly reordering the code makes the warning go away
with no functional change.
Without this patch, building ARM at91sam9g45_defconfig with
gcc-4.6 results in:
net/mac80211/tx.c: In function 'ieee80211_subif_start_xmit':
net/mac80211/tx.c:1797:22: warning: 'chanctx_conf' may be used uninitialized in this function [-Wuninitialized]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: "John W. Linville" <linville@tuxdriver.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Fri, 18 Jan 2013 20:21:31 +0000 (21:21 +0100)]
mac80211: remove redundant check
There's no need to have two checks for "associated"
in ieee80211_sta_restart(), make the first one locked
to not race (unlikely at this point during resume)
and remove the second check.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Simon Wunderlich [Wed, 23 Jan 2013 14:15:57 +0000 (15:15 +0100)]
cfg80211: fix channel check in cfg80211_can_use_iftype_chan
In commit "cfg80211: check radar interface combinations" a regression
was introduced which might lead to NULL dereference if the argument
chan = NULL, which might happen in IBSS/wext case (and probably
others).
Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Thomas Pedersen [Wed, 23 Jan 2013 20:18:13 +0000 (12:18 -0800)]
mac80211: support mesh rate updates
An existing mesh station entry may change its rate
capabilities, so call rate_control_rate_update() to notify
the rate control.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
[fix compilation]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Thomas Pedersen [Wed, 23 Jan 2013 20:18:12 +0000 (12:18 -0800)]
mac80211: clean up mesh sta allocation warning
This refactoring fixes a "scheduling while atomic" warning
when allocating a mesh station entry while holding the RCU
read lock. Fix this by creating a new function
mesh_sta_info_get(), which correctly handles the locking
and returns under RCU.
Also move some unnecessarily #ifdefed mesh station init
code from sta_info_alloc() to __mesh_sta_info_alloc().
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
[change code flow to make sparse happy]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Bing Zhao [Thu, 24 Jan 2013 04:33:58 +0000 (20:33 -0800)]
ieee80211: define AKM suite selectors type 5, 6 and 7
Reference: IEEE 802.11-2012 8.4.2.27.3 "AKM suites"
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Fri, 18 Jan 2013 22:47:05 +0000 (23:47 +0100)]
mac80211: fix aggregation state with current drivers
For drivers that don't actually flush their queues when
aggregation stop with the IEEE80211_AMPDU_TX_STOP_FLUSH
or IEEE80211_AMPDU_TX_STOP_FLUSH_CONT reasons is done,
like iwlwifi or iwlegacy, mac80211 can then transmit on
a TID that the driver still considers busy. This happens
in the following way:
- IEEE80211_AMPDU_TX_STOP_FLUSH requested
- driver marks TID as emptying
- mac80211 removes tid_tx data, this can copy packets
to the TX pending queues and also let new packets
through to the driver
- driver gets unexpected TX as it wasn't completely
converted to the new API
In iwlwifi, this lead to the following warning:
WARNING: at drivers/net/wireless/iwlwifi/dvm/tx.c:442 iwlagn_tx_skb+0xc47/0xce0
Tx while agg.state = 4
Modules linked in: [...]
Pid: 0, comm: kworker/0:0 Tainted: G W 3.1.0 #1
Call Trace:
[<
c1046e42>] warn_slowpath_common+0x72/0xa0
[<
c1046f13>] warn_slowpath_fmt+0x33/0x40
[<
fddffa17>] iwlagn_tx_skb+0xc47/0xce0 [iwldvm]
[<
fddfcaa3>] iwlagn_mac_tx+0x23/0x40 [iwldvm]
[<
fd8c98b6>] __ieee80211_tx+0xf6/0x3c0 [mac80211]
[<
fd8cbe00>] ieee80211_tx+0xd0/0x100 [mac80211]
[<
fd8cc176>] ieee80211_xmit+0x96/0xe0 [mac80211]
[<
fd8cc578>] ieee80211_subif_start_xmit+0x348/0xc80 [mac80211]
[<
c1445207>] dev_hard_start_xmit+0x337/0x6d0
[<
c145eee9>] sch_direct_xmit+0xa9/0x210
[<
c14462c0>] dev_queue_xmit+0x1b0/0x8e0
Fortunately, solving this problem is easy as the station
is being destroyed, so such transmit packets can only
happen due to races. Instead of trying to close the race
just let the race not reach the drivers by making two
changes:
1) remove the explicit aggregation session teardown in
the managed mode code, the same thing will be done
when the station is removed, in __sta_info_destroy.
2) When aggregation stop with AGG_STOP_DESTROY_STA is
requested, leave the tid_tx data around as stopped.
It will be cleared and freed in cleanup_single_sta
later, but until then any racy packets will be put
onto the tid_tx pending queue instead of transmitted
which is fine since the station is being removed.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Emmanuel Grumbach [Sun, 20 Jan 2013 15:32:41 +0000 (17:32 +0200)]
mac80211: provide the vif in rssi_callback
Since drivers can support several BSS / P2P Client
interfaces, the rssi callback needs to inform the driver
about the interface teh rssi event relates to.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 14 Jan 2013 14:14:34 +0000 (15:14 +0100)]
mac80211: allow drivers to access IPv6 information
To be able to implement NS response offloading (in
regular operation or while in WoWLAN) drivers need
to know the IPv6 addresses assigned to interfaces.
Implement an IPv6 notifier in mac80211 to call the
driver when addresses change.
Unlike for IPv4, implement it as a callback rather
than as a list in the BSS configuration, that is
more flexible.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Wed, 16 Jan 2013 09:39:44 +0000 (10:39 +0100)]
mac80211: improve aggregation debug messages
A lot of the aggregation messages don't indicate the
station so they're hard to understand if there are
multiple sessions in progress. Make that easier by
adding the MAC address to most messages. Also add
the TID if it wasn't already there.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 14 Jan 2013 15:39:07 +0000 (16:39 +0100)]
mac80211: remove ARP filter enable/disable logic
Depending on the driver, having ARP filtering for
some addresses may be possible. Remove the logic
that tracks whether ARP filter is enabled or not
and give the driver the total number of addresses
instead of the length of the list so it can make
its own decision.
Reviewed-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Yoni Divinsky [Wed, 30 May 2012 08:36:39 +0000 (11:36 +0300)]
mac80211: add op to configure default key id
There are hardwares which support offload of data packets
for example when auto ARP is enabled the hw will send
the ARP response. In such cases if WEP encryption is
configured the hw must know the default WEP key in order
to encrypt the packets correctly.
When hw_accel is enabled and encryption type is set to WEP,
the driver should get the default key index from mac80211.
Signed-off-by: Yoni Divinsky <yoni.divinsky@ti.com>
[cleanups, fixes, documentation]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Fri, 21 Dec 2012 11:36:33 +0000 (12:36 +0100)]
mac80211: split out chandef tracing macros
Some new APIs will require tracing a chandef without
it being part of a channel context, so separate out
the tracing macros for that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Simon Wunderlich [Tue, 8 Jan 2013 13:04:07 +0000 (14:04 +0100)]
cfg80211: check radar interface combinations
To ease further DFS development regarding interface combinations, use
the interface combinations structure to test for radar capabilities.
Drivers can specify which channel widths they support, and in which
modes. Right now only a single AP interface is allowed, but as the
DFS code evolves other combinations can be enabled.
Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Jouni Malinen [Tue, 15 Jan 2013 15:15:57 +0000 (17:15 +0200)]
cfg80211: Allow use_mfp to be specified with the connect command
The NL80211_ATTR_USE_MFP attribute was originally added for
NL80211_CMD_ASSOCIATE, but it is actually as useful (if not even more
useful) with NL80211_CMD_CONNECT, so process that attribute with the
connect command, too.
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Arend van Spriel [Tue, 8 Jan 2013 09:17:27 +0000 (10:17 +0100)]
nl80211: allow user-space to set address for P2P_DEVICE
As per email discussion Jouni Malinen pointed out that:
"P2P message exchanges can be executed on the current operating channel
of any operation (both P2P and non-P2P station). These can be on 5 GHz
and even on 60 GHz (so yes, you _can_ do GO Negotiation on 60 GHz).
As an example, it would be possible to receive a GO Negotiation Request
frame on a 5 GHz only radio and then to complete GO Negotiation on that
band. This can happen both when connected to a P2P group (through client
discoverability mechanism) and when connected to a legacy AP (assuming
the station receive Probe Request frame from full scan in the beginning
of P2P device discovery)."
This means that P2P messages can be sent over different radio devices.
However, these should use the same P2P device address so it should be
able to provision this from user-space. This patch adds a parameter for
this to struct vif_params which should only be used during creation of
the P2P device interface.
Cc: Jouni Malinen <j@w1.fi>
Cc: Greg Goldman <ggoldman@broadcom.com>
Cc: Jithu Jance <jithu@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
[add error checking]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Marco Porsch [Mon, 7 Jan 2013 15:04:52 +0000 (16:04 +0100)]
{cfg,nl}80211: mesh power mode primitives and userspace access
Add the nl80211_mesh_power_mode enumeration which holds possible
values for the mesh power mode. These modes are unknown, active,
light sleep and deep sleep.
Add power_mode entry to the mesh config structure to hold the
user-configured default mesh power mode. This value will be used
for new peer links.
Add the dot11MeshAwakeWindowDuration value to the mesh config.
The awake window is a duration in TU describing how long the STA
will stay awake after transmitting its beacon in PS mode.
Add access routines to:
- get/set local link-specific power mode (STA)
- get remote STA's link-specific power mode (STA)
- get remote STA's non-peer power mode (STA)
- get/set default mesh power mode (mesh config)
- get/set mesh awake window duration (mesh config)
All config changes may be done at mesh runtime and take effect
immediately.
Signed-off-by: Marco Porsch <marco@cozybit.com>
Signed-off-by: Ivan Bezyazychnyy <ivan.bezyazychnyy@gmail.com>
Signed-off-by: Mike Krinkin <krinkin.m.u@gmail.com>
[fix commit message line length, error handling in set station]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Marco Porsch [Mon, 7 Jan 2013 15:04:51 +0000 (16:04 +0100)]
{cfg,nl,mac}80211: set beacon interval and DTIM period on mesh join
Move the default mesh beacon interval and DTIM period to cfg80211
and make them accessible to nl80211. This enables setting both
values when joining an MBSS.
Previously the DTIM parameter was not set by mac80211 so the
driver's default value was used.
Signed-off-by: Marco Porsch <marco@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Marco Porsch [Mon, 7 Jan 2013 15:04:50 +0000 (16:04 +0100)]
mac80211: move add_tim to subfunction
This functions will be used for mesh beacons, too.
Signed-off-by: Marco Porsch <marco@cozybit.com>
[some formatting fixes]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Marco Porsch [Mon, 7 Jan 2013 15:04:49 +0000 (16:04 +0100)]
mac80211: update mesh peer link counter during userspace peering
The established peer link count is indicated in mesh beacons and
used for other internal tasks. Previously it was not updated when
authenticated peering is performed in userspace.
Signed-off-by: Marco Porsch <marco@cozybit.com>
Acked-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Marco Porsch [Mon, 7 Jan 2013 15:04:48 +0000 (16:04 +0100)]
nl80211: add range checks to mesh parameters
Ranges are taken from IEEE 802.11-2012, common sense or current
implementation requirements.
Signed-off-by: Marco Porsch <marco@cozybit.com>
Acked-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Chun-Yeow Yeoh [Thu, 10 Jan 2013 15:31:54 +0000 (23:31 +0800)]
mac80211: allow disable power save in mesh
Allow mesh interface to disable the power save which is by default
turn on in certain chipset. Testing with 2 units of ZCN-1523H-5-16
featuring AR9280 chipset which have power save enabled by default.
Constant reset if the average signal of the peer mesh STA is below
-80 dBm and power save is enabled.
Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 10 Jan 2013 23:28:01 +0000 (00:28 +0100)]
mac80211: call restart complete at wowlan resume time
When the driver's resume function can't completely
restore the configuration in the device, it returns
1 from the callback which will be treated like a HW
restart request, but done directly.
In this case, also call the driver's restart_complete()
function so it can finish the reconfiguration there.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 10 Jan 2013 22:55:33 +0000 (23:55 +0100)]
mac80211: fix resume from WoWLAN
My commit
529ba6e9313dbe60dab7e72c6fdf647a012e9f5b
("mac80211: clean up association better in suspend")
introduced a bug when resuming from WoWLAN when a
device reset is desired. This case must not use the
suspend_bss_conf as it hasn't been stored.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Yacine Belkadi [Sat, 12 Jan 2013 12:54:14 +0000 (13:54 +0100)]
{cfg,mac}80211.h: fix some kernel-doc warnings
When building the 80211 DocBook, scripts/kernel-doc reports
the following type of warnings:
Warning(include/net/cfg80211.h:334): No description found for return value of 'cfg80211_get_chandef_type'
These warnings are only reported when scripts/kernel-doc
runs in verbose mode.
To fix these use "Return:" to describe function return values.
Signed-off-by: Yacine Belkadi <yacine.belkadi.1@gmail.com>
[adjust for freq_reg_info() change]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Luis R. Rodriguez [Fri, 11 Jan 2013 18:39:36 +0000 (18:39 +0000)]
wireless: make the reg_notifier() void
The reg_notifier()'s return value need not be checked
as it is only supposed to do post regulatory work and
that should never fail. Any behaviour to regulatory
that needs to be considered before cfg80211 does work
to a driver should be specified by using the already
existing flags, the reg_notifier() just does post
processing should it find it needs to.
Also make lbs_reg_notifier static.
Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
[move lbs_reg_notifier to not break compile]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Felix Fietkau [Fri, 11 Jan 2013 13:22:58 +0000 (14:22 +0100)]
wireless: fix regulatory HT40 allowed check
commit
1a9193185f462a51815fe48491f8a6fb6b942551 "regulatory: code cleanup"
changed is_ht40_allowed without considering that IEEE80211_CHAN_NO_HT40 is
not just one flag, but two.
This is causing HT40- to be blocked completely.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Fri, 11 Jan 2013 11:32:37 +0000 (12:32 +0100)]
mac80211: fix HT40 connections
My commit
4bf88530be971bf95a7830ca61b4120980bf4347
("mac80211: convert to channel definition struct")
accidentally broke HT40 connections due to swapped
channel flag checks -- fix that.
Reported-by: Sujith Manoharan <sujith@msujith.org>
Tested-by: Sujith Manoharan <sujith@msujith.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Wed, 9 Jan 2013 11:01:38 +0000 (12:01 +0100)]
regulatory: fix restore_regulatory_settings
My commit
379b82f4c9dc6e67bf61aa61b096c06a2f320f60
("regulatory: pass new regdomain to reset function")
broke the restore_regulatory_settings() function due
to a logic change. Consider this change:
- reset_regdomains(true);
- cfg80211_regdomain = cfg80211_world_regdom;
+ reset_regdomains(true, cfg80211_world_regdom);
This looks innocent enough, until you realise that the
called function (reset_regdomains) also resets the
cfg80211_world_regdom pointer, so that the old version
of the code would use the new object it pointed to and
the new version of the code uses the old object. This
lead to a double-free of this object.
Since reset_regdomains() sets it to &world_regdom, use
that directly.
Reported-by: Sujith Manoharan <sujith@msujith.org>
Tested-by: Sujith Manoharan <sujith@msujith.org>
Reported-by: Bob Copeland <me@bobcopeland.com>
Reported-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Wed, 9 Jan 2013 09:22:07 +0000 (10:22 +0100)]
regulatory: fix uevent
The uevent callback doesn't protect its access to
last_request, which now causes a warning since
the conversion to get_last_request(). Fix this by
allowing to use RCU protection for last_request.
Reported-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Thomas Pedersen [Wed, 2 Jan 2013 22:55:18 +0000 (14:55 -0800)]
mac80211_hwsim: fix beacon timing
A beacon period starts at TSF time 0. Spoof this by
rounding the starting beacon time to a multiple of the
beacon interval, and keep TBTT aligned on TSF adjustment.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Thomas Pedersen [Wed, 2 Jan 2013 22:55:17 +0000 (14:55 -0800)]
mac80211_hwsim: hrtimer beacon
For testing various timing-sensitive protocols (power
save, MBCA, etc.), a beacon accuracy of jiffies is not
sufficient. A tasklet_hrtimer is used for the beacon since
it runs the callback in soft-IRQ context with hrtimer
resolution.
Also handle BSS_CHANGED_BEACON_ENABLED for hwsim.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
[simplify timer container_of]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Thomas Pedersen [Wed, 2 Jan 2013 22:55:16 +0000 (14:55 -0800)]
mac80211_hwsim: fix tsf adjustment
Make hwsim TSF offset adjustments cumulative and relative
to the fake PHY TSF. Now adding 1000us, then adding -1000us
doesn't result in a tsf_offset of -1000. Also the beacon
timestamp can now correctly be expressed as (tsf +
data->tsf_offset), which will be done in a later patch.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Bob Copeland [Thu, 3 Jan 2013 05:09:46 +0000 (00:09 -0500)]
mac80211: fix mesh_hwmp kerneldoc
One of the function names was wrong and some parameters were
missing.
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 27 Dec 2012 16:32:09 +0000 (17:32 +0100)]
cfg80211: disallow more station changes
The following changes are invalid and should be
disallowed when a station already exists:
* supported rates changes, except for TDLS peers
* listen interval changes
* HT capability changes
Disallow them and also update a mac80211 comment
explaining how they would be racy.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Fri, 28 Dec 2012 14:01:57 +0000 (15:01 +0100)]
mac80211: unset peer's HT 40 MHz support if not usable
When an interface is configured to a 20 MHz channel
and the device as well as the peer are 40 MHz capable
the HT capabilities of the peer are not restricted to
20 MHz, even though they're supposed to be restricted
to the currently possible capabilities.
Unset the 40 MHz HT capability bits in this case.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Fri, 28 Dec 2012 11:22:02 +0000 (12:22 +0100)]
wireless: use __aligned
Use __aligned(...) instead of __attribute__((aligned(...)))
in mac80211 and cfg80211.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Fri, 28 Dec 2012 11:12:10 +0000 (12:12 +0100)]
mac80211: support HT notify channel width action
Support the HT notify channel width action frame
to update the rate scaling about the bandwidth
the peer can receive in.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Fri, 28 Dec 2012 11:00:40 +0000 (12:00 +0100)]
wireless: use __packed in ieee80211.h
Use __packed instead of __attribute__((packed)).
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Wed, 18 Jul 2012 11:51:25 +0000 (13:51 +0200)]
mac80211: split TX aggregation stop action
When TX aggregation is stopped, there are a few
different cases:
- connection with the peer was dropped
- session stop was requested locally
- session stop was requested by the peer
- connection was dropped while a session is stopping
The behaviour in these cases should be different, if
the connection is dropped then the driver should drop
all frames, otherwise the frames may continue to be
transmitted, aggregated in the case of a locally
requested session stop or unaggregated in the case of
the peer requesting session stop.
Split these different cases so that the driver can
act accordingly; however, treat local and remote stop
the same way and ask the driver to not send frames as
aggregated packets any more.
In the case of connection drop, the stop callback the
driver is otherwise supposed to call is no longer
required.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Fri, 28 Dec 2012 08:43:03 +0000 (09:43 +0100)]
mac80211: move ieee80211_remove_tid_tx function
To call it from ___ieee80211_stop_tx_ba_session,
move the function and dependencies up.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Wed, 18 Jul 2012 12:12:44 +0000 (14:12 +0200)]
mac80211: split out aggregation TX removal
Create the function ieee80211_remove_tid_tx to call
it from ___ieee80211_stop_tx_ba_session later.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Wed, 18 Jul 2012 11:31:31 +0000 (13:31 +0200)]
mac80211: split aggregation stop by reason
The initiator/tx doesn't really identify why an
aggregation session is stopped, give a reason
for stopping that more clearly identifies what's
going on. This will help tell the driver clearly
what is expected of it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Fri, 26 Oct 2012 15:53:44 +0000 (17:53 +0200)]
nl80211/mac80211: support full station state in AP mode
Today, stations are added already associated. That is
inefficient if, for example, the driver has no room
for stations any more because then the station will
go through the entire auth/assoc handshake, only to
be kicked out afterwards.
To address this a bit better, at least with drivers
using the new station state callback, allow hostapd
to add stations in unauthenticated mode, just after
receiving the AUTH frame, before even replying. Thus
if there's no more space at that point, it can send
a negative auth frame back. It still needs to handle
later state transition errors though, of course.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 20 Dec 2012 17:23:01 +0000 (18:23 +0100)]
cfg80211: move some AP code to right file
Some AP code ended up in mlme.c as ap.c didn't
exist when it was written, move it now.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Fri, 7 Dec 2012 12:06:48 +0000 (13:06 +0100)]
mac80211: restrict assoc request VHT capabilities
In interoperability testing some APs showed bad behaviour
if some of the VHT capabilities of the station are better
than their own. Restrict the assoc request parameters
- beamformee capabable,
- RX STBC and
- RX MCS set
to the subset that the AP can support.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Luis R. Rodriguez [Wed, 19 Dec 2012 18:53:04 +0000 (10:53 -0800)]
cfg80211: move world roaming check for beacon hints
We should not add new beacon hints even if the wiphy
is not world roaming. Without this we were always adding
a beacon hint if not world roaming for every non world
roaming wiphy interface.
Tested-by: Ben Greear <greearb@candelatech.com>
Reported-by: Ben Greear <greearb@candelatech.com>
Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
[fix locking]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Luis R. Rodriguez [Wed, 19 Dec 2012 18:53:03 +0000 (10:53 -0800)]
cfg80211: move reg_is_world_roaming()
This will be used later by other code. This has no
functional change.
Tested-by: Ben Greear <greearb@candelatech.com>
Reported-by: Ben Greear <greearb@candelatech.com>
Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Luis R. Rodriguez [Wed, 19 Dec 2012 18:53:02 +0000 (10:53 -0800)]
cfg80211: do not process beacon hints if one is already queued
Regulatory beacon hints are used to help with world roaming
and as it is right now we learn from a beacon hint processed
on one wiphy to all other wiphys. The processing of beacon
hints however is scheduled and if we have a lot of interfaces
we may hit the case that we'll queue a the same beacon hint
many times until its processed.
To avoid this do a lookup on the queued up beacon hints prior
to adding a new beacon hint. If the beacon hint is removed
from the pending reg beacon hint list then it would be processed
and we'd ensure all wiphys would have learned from it, if its
on the pending reg beacon list we'd now find it prior to it
being processed.
Tested-by: Ben Greear <greearb@candelatech.com>
Reported-by: Ben Greear <greearb@candelatech.com>
Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Fri, 14 Dec 2012 13:34:25 +0000 (14:34 +0100)]
mac80211: assign bss_conf.bssid only once
Instead of checking every time bss_info_changed is called,
assign the pointer once depending on the interface type
and then leave it untouched until the interface type is
changed. This makes the ieee80211_bss_info_change_notify()
now a simple wrapper to call the driver only.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Fri, 14 Dec 2012 13:22:10 +0000 (14:22 +0100)]
mac80211: further simplify ieee80211_bss_info_change_notify
The special case in the function isn't really needed,
instead make the suspend code a bit better and also
easier to understand and move the warning into the
driver op wrapper inline.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Fri, 14 Dec 2012 13:17:26 +0000 (14:17 +0100)]
mac80211: reconfig bss_info_changed only if beaconing
For AP/IBSS/mesh interfaces, call the driver to reconfigure
bss_info_changed only if the interface was beaconing before
suspend, otherwise we call the driver and it might interpret
the change as going from enabled to disabled.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Fri, 14 Dec 2012 13:06:28 +0000 (14:06 +0100)]
mac80211: track enable_beacon explicitly
Instead of calculating in ieee80211_bss_info_change_notify()
whether beaconing should be enabled or not, set it in the
correct places in the callers. This simplifies the logic in
this function at the expense of offchannel, but is also more
robust.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 13 Dec 2012 16:42:30 +0000 (17:42 +0100)]
mac80211: fix channel context iteration
During suspend/resume channel contexts might be
iterated even if they haven't been re-added to
the driver, keep track of this and skip them in
iteration. Also use the new status for sanity
checks.
Also clarify the fact that during HW restart all
contexts are iterated over (thanks Eliad.)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 13 Dec 2012 16:16:45 +0000 (17:16 +0100)]
mac80211: clean up association better in suspend
When suspending, bss_info_changed() is called to
disable beacons, but managed mode interfaces are
simply removed (bss_info_changed() is called with
"no change" only). This can lead to problems.
To fix this and copy the BSS configuration, clear
it during suspend and restore it on resume.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 13 Dec 2012 15:47:42 +0000 (16:47 +0100)]
mac80211: clean up ieee80211_quiesce
It's a bit odd that there's a return value that only
depends on the iftype, move that logic out of the
function into the only caller that needs it.
Also, since the quiescing could stop timers that
trigger the sdata work, move the sdata work cancel
into the function and after the actual quiesce.
Finally, there's no need to call it on interfaces
that are down, so don't.
Change-Id: I1632d46d21ba3558ea713d035184f1939905f2f1
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Emmanuel Grumbach [Mon, 10 Dec 2012 14:19:13 +0000 (16:19 +0200)]
mac82011: use frame control to differentiate probe resp/beacon
The probe response/beacon management frame RX code passes a
bool parameter to differentiate beacons and probe responses.
This is useless since we have the frame and can thus use its
frame control field. Moreover it is buggy since there is one
call to ieee80211_rx_bss_info with a beacon frame that is
indicated as a probe response, which is also fixed by using
the frame control field, so do that.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Fri, 7 Dec 2012 11:45:06 +0000 (12:45 +0100)]
mac80211: fix ieee80211_ie_build_vht_cap indentation
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 13 Dec 2012 23:19:08 +0000 (00:19 +0100)]
cfg80211: adjacent 80+80 MHz channel segments are invalid
In that case, it's really a 160 MHz channel, so disallow
this configuration.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Fri, 14 Dec 2012 13:56:03 +0000 (14:56 +0100)]
mac80211: optimise AP stop RCU handling
If there are VLANs, stopping an AP is inefficient as it
calls rcu_barrier() once for each interface (the VLANs
and the AP itself). Optimise this by moving rcu_barrier()
out of the station cleanups and calling it only once for
all interfaces combined.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 6 Dec 2012 14:57:14 +0000 (15:57 +0100)]
regulatory: use IS_ERR macro family for freq_reg_info
Instead of returning an error and filling a pointer
return the pointer and an ERR_PTR value in error cases.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 6 Dec 2012 15:29:25 +0000 (16:29 +0100)]
regulatory: use RCU to protect last_request
This will allow making freq_reg_info() lock-free.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 6 Dec 2012 14:47:38 +0000 (15:47 +0100)]
regulatory: use RCU to protect global and wiphy regdomains
To simplify the locking and not require cfg80211_mutex
(which nl80211 uses to access the global regdomain) and
also to make it possible for drivers to access their
wiphy->regd safely, use RCU to protect these pointers.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 6 Dec 2012 14:44:07 +0000 (15:44 +0100)]
regulatory: pass new regdomain to reset function
Instead of assigning after calling the function do
it inside the function. This will later avoid a
period of time where the pointer is NULL.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Tue, 4 Dec 2012 14:07:34 +0000 (15:07 +0100)]
regulatory: remove handling of channel bandwidth
The channel bandwidth handling isn't really quite right,
it assumes that a 40 MHz channel is really two 20 MHz
channels, which isn't strictly true. This is the way the
regulatory database handling is defined right now though
so remove the logic to handle other channel widths.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 3 Dec 2012 23:48:59 +0000 (00:48 +0100)]
regulatory: fix reg_is_valid_request handling
There's a bug with the world regulatory domain, it
can be updated any time which is different from all
other regdomains that can only be updated once after
a request for them. Fix this by adding a check for
"processed" to the reg_is_valid_request() function
and clear that when doing a request.
While looking at this I also found another locking
bug, last_request is protected by the reg_mutex not
the cfg80211_mutex so the code in nl80211 is racy.
Remove that code as it only tries to prevent an
allocation in an error case, which isn't necessary.
Then the function can also become static and locking
in nl80211 can have a smaller scope.
Also change __set_regdom() to do the checks earlier
and not different for world/other regdomains.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 3 Dec 2012 23:19:24 +0000 (00:19 +0100)]
regulatory: remove locking from wiphy_apply_custom_regulatory
wiphy_apply_custom_regulatory() doesn't have to hold
the regulatory mutex as it only modifies the given
wiphy with the given regulatory domain, it doesn't
access any global regulatory data.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 3 Dec 2012 22:00:08 +0000 (23:00 +0100)]
regulatory: clarify locking rules and assertions
Many places that currently check that cfg80211_mutex
is held don't actually use any data protected by it.
The functions that need to hold the cfg80211_mutex
are the ones using the cfg80211_regdomain variable,
so add the lock assertion to those and clarify this
in the comments.
The reason for this is that nl80211 uses the regdom
without being able to hold reg_mutex.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 3 Dec 2012 23:14:17 +0000 (00:14 +0100)]
regulatory: simplify freq_reg_info_regd
The function itself has dual-purpose: it can
retrieve from a given regdomain or from the
globally installed one. Change it to have a
single purpose only: to look up from a given
regdomain. Pass the correct regdomain in the
freq_reg_info() function instead.
This also changes the locking rules for it,
no locking is required any more.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 3 Dec 2012 18:12:02 +0000 (19:12 +0100)]
regulatory: remove useless warning
Even if it never happens and is hidden behind the
debug config option, it's completely useless: the
calltrace will only show module loading.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 3 Dec 2012 17:59:58 +0000 (18:59 +0100)]
regulatory: remove redundant isalpha() check
toupper() only modifies lower-case letters, so
the isalpha() check is redundant; remove it.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 3 Dec 2012 17:56:41 +0000 (18:56 +0100)]
regulatory: simplify restore_regulatory_settings
Use list_splice_tail_init() and also simplify the locking.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 3 Dec 2012 17:36:09 +0000 (18:36 +0100)]
regulatory: remove BUG_ON
This code is a bit too BUG_ON happy, remove all
instances and while doing so make some code a bit
smarter by passing the right pointer instead of
indices into arrays.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 3 Dec 2012 17:23:37 +0000 (18:23 +0100)]
cfg80211: remove wiphy_idx_valid
This is pretty much useless since get_wiphy_idx()
always returns true since it's always called with
a valid wiphy pointer.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 3 Dec 2012 16:54:55 +0000 (17:54 +0100)]
regulatory: use proper enum for return values
Instead of treating special error codes specially,
like -EALREADY, introduce a real enum for all the
needed possibilities and use it.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 3 Dec 2012 16:59:24 +0000 (17:59 +0100)]
regulatory: remove useless locking on exit
It would be a major problem if anything were to run
concurrently while the module is being unloaded so
remove the locking that doesn't help anything.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 3 Dec 2012 16:21:11 +0000 (17:21 +0100)]
regulatory: code cleanup
Clean up various things like indentation, extra
parentheses, too many/few line breaks, etc.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 3 Dec 2012 16:21:26 +0000 (17:21 +0100)]
regulatory: simplify regulatory_hint_11d
There's no need to unlock before calling
queue_regulatory_request(), so simplify
the function.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 3 Dec 2012 16:32:01 +0000 (17:32 +0100)]
regulatory: don't test list before iterating
There's no need to test whether a list is
empty or not before iterating.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 3 Dec 2012 15:59:46 +0000 (16:59 +0100)]
regulatory: clean up reg_copy_regd()
Use ERR_PTR/IS_ERR to return the result or errors,
also do some code cleanups.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 6 Dec 2012 16:26:17 +0000 (17:26 +0100)]
regulatory: clean up regdom_intersect
As the dummy_rule (also renamed from irule) is only
used for output by the reg_rules_intersect() function
there's no need to clear it at all, remove that.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Tue, 4 Dec 2012 11:49:16 +0000 (12:49 +0100)]
regulatory: don't allocate too much memory
There's no need to allocate one reg rule more
than will be used, reduce the allocations. The
allocation in nl80211 already doesn't allocate
too much space.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 6 Dec 2012 16:03:17 +0000 (17:03 +0100)]
regulatory: don't write past array when intersecting rules
When intersecting rules, we count first to know how many
rules need to be allocated, and then do the intersection
into the allocated array. However, the code doing this
writes past the end of the array because it attempts to
do all intersections. Make it stop when the right number
of rules has been reached.
Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Sat, 15 Dec 2012 08:45:50 +0000 (09:45 +0100)]
mac80211: remove a bit of dead mesh code
In a file that's only built when CONFIG_MAC80211_MESH
is defined, having an #ifdef on the same is entirely
pointless, so remove it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 13 Dec 2012 22:49:02 +0000 (23:49 +0100)]
mac80211: optimise roaming time again
The last fixes re-added the RCU synchronize penalty
on roaming to fix the races. Split up sta_info_flush()
now to get rid of that again, and let managed mode
(and only it) delay the actual destruction.
Tested-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 13 Dec 2012 22:26:57 +0000 (23:26 +0100)]
mac80211: warn if unexpectedly removing stations
When an interface is brought down it must have been
disconnected (or similar) in all modes other than WDS,
so warn if any stations were removed in other modes.
Tested-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 13 Dec 2012 22:07:46 +0000 (23:07 +0100)]
mac80211: remove final sta_info_flush()
When all interfaces have been removed, there can't
be any stations left over, so there's no need to
flush again. Remove this, and all code associated
with it, which also simplifies the function.
Tested-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Vladimir Kondratiev [Tue, 18 Dec 2012 07:55:33 +0000 (09:55 +0200)]
wireless: more 'capability info' bits
define bits for 'capability info', as in recent spec edition
IEEE802.11-2012
Also, add mask for 2-bit field 'bss type', as it is in 802.11ad
Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 10 Dec 2012 10:57:42 +0000 (11:57 +0100)]
mac80211_hwsim: allow testing paged RX
Paged RX, i.e. SKBs with (some of) the data in pages instead
of the SKB header data (skb->data) can behave differently in
the stack and cause other bugs. To make debugging easier add
an option to hwsim to test with such SKBs.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Chun-Yeow Yeoh [Thu, 13 Dec 2012 10:59:57 +0000 (18:59 +0800)]
mac80211: use short slot time in mesh for 5GHz
Use short slot time in 5GHz for mesh. The performance is
increased from 16.4Mbps to 23.4Mbps for two directly
connected mesh STAs operating in legacy rate using iperf
measurement. Almost similar to the results claimed in IBSS
mode.
Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
[call ieee80211_get_sdata_band() only once]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Ben Greear [Thu, 13 Dec 2012 00:56:20 +0000 (16:56 -0800)]
mac80211: Allow disabling SGI-20
This allows user-space (wpa_supplicant) to disable
short guard interval (SGI) for 20Mhz. The SGI-40
disable option is already handled.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 3 Jan 2013 12:01:11 +0000 (13:01 +0100)]
Merge remote-tracking branch 'mac80211/master' into HEAD
Chaitanya [Fri, 21 Dec 2012 11:45:17 +0000 (17:15 +0530)]
mac80211: fix maximum MTU
The maximum MTU shouldn't take the headers into account,
the maximum MSDU size is exactly the maximum MTU.
Signed-off-by: T Krishna Chaitanya <chaitanyatk@posedge.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Mon, 10 Dec 2012 14:38:14 +0000 (16:38 +0200)]
mac80211: fix dtim_period in hidden SSID AP association
When AP's SSID is hidden the BSS can appear several times in
cfg80211's BSS list: once with a zero-length SSID that comes
from the beacon, and once for each SSID from probe reponses.
Since the mac80211 stores its data in ieee80211_bss which
is embedded into cfg80211_bss, mac80211's data will be
duplicated too.
This becomes a problem when a driver needs the dtim_period
since this data exists only in the beacon's instance in
cfg80211 bss table which isn't the instance that is used
when associating.
Remove the DTIM period from the BSS table and track it
explicitly to avoid this problem.
Cc: stable@vger.kernel.org
Tested-by: Efi Tubul <efi.tubul@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 13 Dec 2012 22:08:52 +0000 (23:08 +0100)]
mac80211: use del_timer_sync for final sta cleanup timer deletion
This is a very old bug, but there's nothing that prevents the
timer from running while the module is being removed when we
only do del_timer() instead of del_timer_sync().
The timer should normally not be running at this point, but
it's not clearly impossible (or we could just remove this.)
Cc: stable@vger.kernel.org
Tested-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Thu, 13 Dec 2012 21:54:58 +0000 (22:54 +0100)]
mac80211: fix station destruction in AP/mesh modes
Unfortunately, commit
b22cfcfcae5b, intended to speed up roaming
by avoiding the synchronize_rcu() broke AP/mesh modes as it moved
some code into that work item that will still call into the driver
at a time where it's no longer expected to handle this: after the
AP or mesh has been stopped.
To fix this problem remove the per-station work struct, maintain a
station cleanup list instead and flush this list when stations are
flushed. To keep this patch smaller for stable, do this when the
stations are flushed (sta_info_flush()). This unfortunately brings
back the original roaming delay; I'll fix that again in a separate
patch.
Also, Ben reported that the original commit could sometimes (with
many interfaces) cause long delays when an interface is set down,
due to blocking on flush_workqueue(). Since we now maintain the
cleanup list, this particular change of the original patch can be
reverted.
Cc: stable@vger.kernel.org [3.7]
Reported-by: Ben Greear <greearb@candelatech.com>
Tested-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Thomas Pedersen [Tue, 18 Dec 2012 02:41:57 +0000 (18:41 -0800)]
mac80211: RMC buckets are just list heads
The array of rmc_entrys is redundant since only the
list_head is used. Make this an array of list_heads
instead and save ~6k per vif at runtime :D
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Johannes Berg [Tue, 11 Dec 2012 19:38:41 +0000 (20:38 +0100)]
mac80211: assign VLAN channel contexts
Make AP_VLAN type interfaces track the AP master channel
context so they have one assigned for the various lookups.
Don't give them their own refcount etc. since they're just
slaves to the AP master.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>