openwrt/staging/blogic.git
11 years agocfg80211: use enum nl80211_dfs_regions for dfs_region everywhere
Luis R. Rodriguez [Wed, 13 Nov 2013 17:54:02 +0000 (18:54 +0100)]
cfg80211: use enum nl80211_dfs_regions for dfs_region everywhere

u8 was used in some other places, just stick to the enum,
this forces us to express the values that are expected.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: minstrels: spare numerous useless calls to get_random_bytes
Karl Beldan [Wed, 13 Nov 2013 09:54:19 +0000 (10:54 +0100)]
mac80211: minstrels: spare numerous useless calls to get_random_bytes

ATM, only the first array value returned by get_random_bytes is used.
This change moves the call to get_random_bytes from the nested loop it
is in to its parent.
While at it, replace get_random_bytes with prandom_bytes since PRNs are
way enough for the selection process.
After this, minstrel_ht reclaims 80 PR-bytes instead of 640 R-bytes.

minstrels use sample tables to probe different rates in a randomized
manner.
minstrel_ht inits one single sample table upon registration (during
subsys_initcalls) and minstrel uses one per STA addition in minstrel.

Signed-off-by: Karl Beldan <karl.beldan@rivierawaves.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: minstrel_ht: replace some occurences of MCS_GROUP_RATES
Karl Beldan [Mon, 11 Nov 2013 12:12:55 +0000 (13:12 +0100)]
mac80211: minstrel_ht: replace some occurences of MCS_GROUP_RATES

Consecutive MCSes in [8*(NSS-1)->8*NSS[ have the same number NSS of
streams (except for MCS32 which is mishandled ATM).
ATM minstrel_ht uses MCS_GROUP_RATES in place of this 8 modulus.
This change replaces such occurences and by doing so allows for different
values of MCS_GROUP_RATES (e.g to cope with VHT MCS8,9).

Signed-off-by: Karl Beldan <karl.beldan@rivierawaves.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: add min required channel definition field
Eliad Peller [Mon, 11 Nov 2013 18:14:01 +0000 (20:14 +0200)]
mac80211: add min required channel definition field

Add a new field to ieee80211_chanctx_conf to indicate
the min required channel configuration.

Tuning to a narrower channel might help reducing
the noise level and saving some power.

The min required channel definition is the max of
all min required channel definitions of the interfaces
bound to this channel context.

In AP mode, use 20MHz when there are no connected station.
When a new station is added/removed, calculate the new max
bandwidth supported by any of the stations (e.g. 80MHz when
80MHz and 40MHz stations are connected).

In other cases, simply use bss_conf.chandef as the
min required chandef.

Notify drivers about changes to this field by calling
drv_change_chanctx with a new CHANGE_MIN_WIDTH notification.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: enable easier manipulation of VHT beamforming caps
Eyal Shapira [Mon, 11 Nov 2013 18:14:00 +0000 (20:14 +0200)]
mac80211: enable easier manipulation of VHT beamforming caps

Introduce shift and mask defines for beamformee STS cap and number
of sounding dimensions cap as these can take any 3 bit value.
While at it also cleanup an unrequired parenthesis.

Signed-off-by: Eyal Shapira <eyal@wizery.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: move csa_chandef to sdata
Luciano Coelho [Mon, 11 Nov 2013 18:34:54 +0000 (20:34 +0200)]
mac80211: move csa_chandef to sdata

There is no reason why we should have only one channel switch
announcement at a time for a single phy.  When support for channel
switch with multiple contexts and multiple vifs per context is
implemented, we will need the chandef data for each vif.  Move the
csa_chandef structure to sdata to prepare for this.

Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
[Fixed compilation with mesh]
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: use put_unaligned_le in mesh when necessary
Chun-Yeow Yeoh [Wed, 13 Nov 2013 07:39:12 +0000 (15:39 +0800)]
mac80211: use put_unaligned_le in mesh when necessary

Use put_unaligned_le16 and put_unaligned_le32 for
mesh_path_error_tx and mesh_path_sel_frame_tx.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: use put_unaligned_le16 in mesh_plink_frame_tx
Chun-Yeow Yeoh [Wed, 13 Nov 2013 07:43:03 +0000 (15:43 +0800)]
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>
11 years agocfg80211: add an option to disable processing country IEs
Luis R. Rodriguez [Mon, 11 Nov 2013 21:15:31 +0000 (22:15 +0100)]
cfg80211: add an option to disable processing country IEs

Certain vendors may want to disable the processing of
country IEs so that they can continue using the regulatory
domain the driver or user has set.  Currently there is no
way to stop the core from processing country IEs, so add
support to the core to ignore country IE hints.

Cc: Mihir Shete <smihir@qti.qualcomm.com>
Cc: Henri Bahini <hbahini@qca.qualcomm.com>
Cc: Tushnim Bhattacharyya <tushnimb@qca.qualcomm.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: add flags to define country IE processing rules
Luis R. Rodriguez [Mon, 11 Nov 2013 21:15:30 +0000 (22:15 +0100)]
cfg80211: add flags to define country IE processing rules

802.11 cards may have different country IE parsing behavioural
preferences and vendors may want to support these. These preferences
were managed by the REGULATORY_CUSTOM_REG and the REGULATORY_STRICT_REG
flags and their combination. Instead of using this existing notation,
split out the country IE behavioural preferences as a new flag. This
will allow us to add more customizations easily and make the code more
maintainable.

Cc: Mihir Shete <smihir@qti.qualcomm.com>
Cc: Henri Bahini <hbahini@qca.qualcomm.com>
Cc: Tushnim Bhattacharyya <tushnimb@qca.qualcomm.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
[fix up conflicts]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: move regulatory flags to their own variable
Luis R. Rodriguez [Mon, 11 Nov 2013 21:15:29 +0000 (22:15 +0100)]
cfg80211: move regulatory flags to their own variable

We'll expand this later, this will make it easier to
classify and review what things are related to regulatory
or not.

Coccinelle only missed 4 hits, which I had to do manually,
supplying the SmPL in case of merge conflicts.

@@
struct wiphy *wiphy;
@@
-wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY
+wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG
@@
expression e;
@@
-e->flags |= WIPHY_FLAG_CUSTOM_REGULATORY
+e->regulatory_flags |= REGULATORY_CUSTOM_REG
@@
struct wiphy *wiphy;
@@
-wiphy->flags &= ~WIPHY_FLAG_CUSTOM_REGULATORY
+wiphy->regulatory_flags &= ~REGULATORY_CUSTOM_REG
@@
struct wiphy *wiphy;
@@
-wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY
+wiphy->regulatory_flags & REGULATORY_CUSTOM_REG

@@
struct wiphy *wiphy;
@@
-wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY
+wiphy->regulatory_flags |= REGULATORY_STRICT_REG
@@
expression e;
@@
-e->flags |= WIPHY_FLAG_STRICT_REGULATORY
+e->regulatory_flags |= REGULATORY_STRICT_REG
@@
struct wiphy *wiphy;
@@
-wiphy->flags &= ~WIPHY_FLAG_STRICT_REGULATORY
+wiphy->regulatory_flags &= ~REGULATORY_STRICT_REG
@@
struct wiphy *wiphy;
@@
-wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY
+wiphy->regulatory_flags & REGULATORY_STRICT_REG

@@
struct wiphy *wiphy;
@@
-wiphy->flags |= WIPHY_FLAG_DISABLE_BEACON_HINTS
+wiphy->regulatory_flags |= REGULATORY_DISABLE_BEACON_HINTS
@@
expression e;
@@
-e->flags |= WIPHY_FLAG_DISABLE_BEACON_HINTS
+e->regulatory_flags |= REGULATORY_DISABLE_BEACON_HINTS
@@
struct wiphy *wiphy;
@@
-wiphy->flags &= ~WIPHY_FLAG_DISABLE_BEACON_HINTS
+wiphy->regulatory_flags &= ~REGULATORY_DISABLE_BEACON_HINTS
@@
struct wiphy *wiphy;
@@
-wiphy->flags & WIPHY_FLAG_DISABLE_BEACON_HINTS
+wiphy->regulatory_flags & REGULATORY_DISABLE_BEACON_HINTS

Generated-by: Coccinelle SmPL
Cc: Julia Lawall <julia.lawall@lip6.fr>
Cc: Peter Senna Tschudin <peter.senna@gmail.com>
Cc: Mihir Shete <smihir@qti.qualcomm.com>
Cc: Henri Bahini <hbahini@qca.qualcomm.com>
Cc: Tushnim Bhattacharyya <tushnimb@qca.qualcomm.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
[fix up whitespace damage, overly long lines]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: use put_unaligned_le16 for precedence value in mesh
Chun-Yeow Yeoh [Tue, 12 Nov 2013 02:31:48 +0000 (10:31 +0800)]
mac80211: use put_unaligned_le16 for precedence value in mesh

use put_unaligned_le16 for precedence value in mesh
channel switch support

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211_hwsim: claim CCK support for HT clients
Karl Beldan [Mon, 11 Nov 2013 12:29:33 +0000 (13:29 +0100)]
mac80211_hwsim: claim CCK support for HT clients

Signed-off-by: Karl Beldan <karl.beldan@rivierawaves.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: rename __set_regdom() to reg_set_rd_country_ie()
Luis R. Rodriguez [Tue, 5 Nov 2013 17:18:17 +0000 (09:18 -0800)]
cfg80211: rename __set_regdom() to reg_set_rd_country_ie()

This reflects that case is now completely separated.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: set driver regulatory updates on its own
Luis R. Rodriguez [Tue, 5 Nov 2013 17:18:16 +0000 (09:18 -0800)]
cfg80211: set driver regulatory updates on its own

This splits up the driver regulatory update on its
own, this helps simplify the reading the case.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: set user regulatory updates on its own
Luis R. Rodriguez [Tue, 5 Nov 2013 17:18:15 +0000 (09:18 -0800)]
cfg80211: set user regulatory updates on its own

This splits out the user regulatory update on its
own, this helps simplify reading the case.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: set core regulatory updates on its own
Luis R. Rodriguez [Tue, 5 Nov 2013 17:18:14 +0000 (09:18 -0800)]
cfg80211: set core regulatory updates on its own

This splits up the core regulatory update to be
set on its own helper. This should make it easier
to read exactly what type of requests should be
expected there. In this case its clear that
NL80211_REGDOM_SET_BY_CORE is only used by the
core for updating the world regulatory domain.
This is consistant with the nl80211.h documentation.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
[add warning to default switch case to avoid compiler warning]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: pass the last_request to __set_regdom()
Luis R. Rodriguez [Tue, 5 Nov 2013 17:18:13 +0000 (09:18 -0800)]
cfg80211: pass the last_request to __set_regdom()

last_request is RCU protected, since we're getting it
on set_regdom() we might as well pass it to ensure the
same request is being processed, otherwise there is a
small race it could have changed. This makes processing
of the request atomic.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: move core reg_notfier() check to source
Luis R. Rodriguez [Tue, 5 Nov 2013 17:18:12 +0000 (09:18 -0800)]
cfg80211: move core reg_notfier() check to source

Drivers that set the WIPHY_FLAG_CUSTOM_REGULATORY skip
the core world regulatory domain updates, but do want
their reg_notifier() called. Move the check for this
closer to the source of the check that detected skipped
was required and while at it add a helper for the notifier
calling. This has no functional changes. This brings together
the place where we call the reg_notifier() will be called.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: allow only the core to request to update the world regdom
Luis R. Rodriguez [Tue, 5 Nov 2013 17:18:11 +0000 (09:18 -0800)]
cfg80211: allow only the core to request to update the world regdom

It seems some out of tree drivers were using a regulatory_hint("00")
to trigger off the wiphy regulatory notifier, for those cases just
setting the WIPHY_FLAG_CUSTOM_REGULATORY would suffice to call
the reg_notifier() for a world regulatory domain update. If drivers
find other needs for calling the reg_notifier() a proper implemenation
is preferred.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: add helper for calling CRDA
Luis R. Rodriguez [Tue, 5 Nov 2013 17:18:10 +0000 (09:18 -0800)]
cfg80211: add helper for calling CRDA

All the regulatory request process routines use the
same pattern.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: add helper for kfree'ing and assigning last_request
Luis R. Rodriguez [Tue, 5 Nov 2013 17:18:09 +0000 (09:18 -0800)]
cfg80211: add helper for kfree'ing and assigning last_request

This enforces proper RCU APIs accross the code.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: add helper for kfree'ing last_request
Luis R. Rodriguez [Tue, 5 Nov 2013 17:18:08 +0000 (09:18 -0800)]
cfg80211: add helper for kfree'ing last_request

This is common code, this reduces the chance of making
a mistake of how we free it.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: process non country IE conflicting first
Luis R. Rodriguez [Tue, 5 Nov 2013 17:18:07 +0000 (09:18 -0800)]
cfg80211: process non country IE conflicting first

By dealing with non country IE conficts first we can shift
the code that deals with the conflict to the left. This has
no functional changes.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: process country IE regulatory requests on their own
Luis R. Rodriguez [Tue, 5 Nov 2013 17:18:06 +0000 (09:18 -0800)]
cfg80211: process country IE regulatory requests on their own

This is the last split up of the old unified __regultory_hint()
processing set of functionality, it moves the country IE processing
all on its own. This makes it easier to follow and read what exactly
is going on for the case of processing country IEs.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: process driver regulatory requests on its own
Luis R. Rodriguez [Tue, 5 Nov 2013 17:18:05 +0000 (09:18 -0800)]
cfg80211: process driver regulatory requests on its own

This makes the code easier to read and follow.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: process user regulatory requests on its own
Luis R. Rodriguez [Tue, 5 Nov 2013 17:18:04 +0000 (09:18 -0800)]
cfg80211: process user regulatory requests on its own

This makes the code path easier to read and lets us
split out some functionality that is only user specific,
that makes it easier to read the other types of requests.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: processing core regulatory hints on its own
Luis R. Rodriguez [Tue, 5 Nov 2013 17:18:03 +0000 (09:18 -0800)]
cfg80211: processing core regulatory hints on its own

This makes the code path easier to read for the core case.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
[add warning to default case in switch to avoid compile warning]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: check regulatory request alpha2 early
Luis R. Rodriguez [Tue, 5 Nov 2013 17:18:01 +0000 (09:18 -0800)]
cfg80211: check regulatory request alpha2 early

Currently nl80211 allows userspace to send the kernel
a bogus regulatory domain with at most 32 rules set
and it won't reject it until after its allocated
memory. Let's be smart about it and take advantage
that the last_request is now available under RTNL
and check if the alpha2 matches an expected request
and reject any bogus userspace requests prior to
hitting the memory allocator.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: enforce disabling channels by custom or strict settings
Luis R. Rodriguez [Wed, 6 Nov 2013 16:54:44 +0000 (17:54 +0100)]
cfg80211: enforce disabling channels by custom or strict settings

If a custom regulatory domain is passed and if a rule for a
channel indicates it should be disabled that channel should
always remain disabled as per its documentation and design.

Likewise if WIPHY_FLAG_STRICT_REGULATORY flag is set and a
regulatory_hint() is issued if a channel is disabled that
channel should remain disabled.

Without this change only drivers that set the _orig flags
appropriately on their own would ensure disallowed channels
remaind disabled. This helps drivers save code by relying on
the APIS provided to entrust channels that should not be enabled
be respected by only having to use wiphy_apply_custom_regulatory()
or regulatory_hint() with the WIPHY_FLAG_STRICT_REGULATORY set.

If wiphy_apply_custom_regulatory() is used together with
WIPHY_FLAG_STRICT_REGULATORY and a regulatory_hint() issued
later, the incoming regulatory domain can override previously
set _orig parameters from the initial custom regulatory
setting.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: fix parsing when db.txt ends on a rule
Luis R. Rodriguez [Mon, 28 Oct 2013 02:19:46 +0000 (03:19 +0100)]
cfg80211: fix parsing when db.txt ends on a rule

If genregdb.awk assumes the file will end with an
extra empty line or a comment line. This is could
not be true so just address this.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Acked-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: add function helpers to genregdb.awk
Luis R. Rodriguez [Mon, 28 Oct 2013 02:19:45 +0000 (03:19 +0100)]
cfg80211: add function helpers to genregdb.awk

This has no functional change, this just lets us reuse
helpers at a later time.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Acked-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: add generic cipher scheme support
Max Stepanov [Sun, 24 Mar 2013 12:23:27 +0000 (14:23 +0200)]
mac80211: add generic cipher scheme support

This adds generic cipher scheme support to mac80211, such schemes
are fully under control by the driver. On hw registration drivers
may specify additional HW ciphers with a scheme how these ciphers
have to be handled by mac80211 TX/RR. A cipher scheme specifies a
cipher suite value, a size of the security header to be added to
or stripped from frames and how the PN is to be verified on RX.

Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: allow beaconing after DFS CAC
Janusz Dziedzic [Wed, 6 Nov 2013 12:55:53 +0000 (13:55 +0100)]
cfg80211: allow beaconing after DFS CAC

Allow beconing after we pass Channel Availability Check (CAC).
Allow non-DFS and DFS channels mix. All DFS channels have to
be in NL80211_DFS_AVAILABLE state (pass CAC).

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211/mac80211: DFS setup chandef for cac event
Janusz Dziedzic [Wed, 6 Nov 2013 12:55:51 +0000 (13:55 +0100)]
cfg80211/mac80211: DFS setup chandef for cac event

To report channel width correctly we have
to send correct channel parameters from
mac80211 when calling cfg80211_cac_event().

This is required in case of using channel width
higher than 20MHz and we have to set correct
dfs channel state after CAC (NL80211_DFS_AVAILABLE).

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Reviewed-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: verify ieee80211_key_replace() arguments
Johannes Berg [Tue, 29 Oct 2013 09:00:08 +0000 (10:00 +0100)]
mac80211: verify ieee80211_key_replace() arguments

There's no code calling ieee80211_key_replace() with both
arguments NULL and it wouldn't make sense, but in the
interest of maintainability add a warning for it. As a
side effect, this also shuts up a smatch warning.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: don't allow drivers to unset NL80211_FEATURE_SCAN_FLUSH
Johannes Berg [Sat, 26 Oct 2013 15:14:38 +0000 (17:14 +0200)]
cfg80211: don't allow drivers to unset NL80211_FEATURE_SCAN_FLUSH

As the flag is entirely implemented in cfg80211, it should
have been a global feature flag (which I believe didn't
exist at the time). However, there's no reason to allow
drivers to unset the flag, so don't allow it and remove
the validation of NL80211_SCAN_FLAG_FLUSH.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: add missing break in cfg80211_get_chan_state()
Johannes Berg [Fri, 25 Oct 2013 10:46:44 +0000 (12:46 +0200)]
cfg80211: add missing break in cfg80211_get_chan_state()

Improve readability of the function by adding the break,
there's no functional impact but it's confusing to fall
through.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: remove useless tests for array
Johannes Berg [Fri, 25 Oct 2013 09:31:42 +0000 (11:31 +0200)]
mac80211: remove useless tests for array

Coverity points out that checking assoc_data->ie is
completely useless since it's an array in the struct
and can't be NULL - remove the useless checks.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: clean up mesh local link ID generation
Thomas Pedersen [Tue, 5 Nov 2013 19:17:05 +0000 (11:17 -0800)]
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>
11 years agomac80211: factor out plink event gathering
Thomas Pedersen [Tue, 5 Nov 2013 19:17:03 +0000 (11:17 -0800)]
mac80211: factor out plink event gathering

Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: factor out peering FSM
Thomas Pedersen [Tue, 5 Nov 2013 19:17:02 +0000 (11:17 -0800)]
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>
11 years agomac80211: assign sta plid early
Thomas Pedersen [Tue, 5 Nov 2013 19:17:01 +0000 (11:17 -0800)]
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>
11 years agomac80211: consolidate rcu unlocks in plink frame rx
Thomas Pedersen [Tue, 5 Nov 2013 19:17:00 +0000 (11:17 -0800)]
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>
11 years agomac80211: factor peering frame processing into own function
Thomas Pedersen [Tue, 5 Nov 2013 19:16:59 +0000 (11:16 -0800)]
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>
11 years agomac80211: remove unused mesh_mgmt_ies_add() prototype
Bob Copeland [Tue, 5 Nov 2013 19:16:58 +0000 (11:16 -0800)]
mac80211: remove unused mesh_mgmt_ies_add() prototype

Said function was removed some time ago.

Signed-off-by: Bob Copeland <bob@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: return -ENOMEM in mesh_plink_frame_tx
Bob Copeland [Tue, 5 Nov 2013 19:16:57 +0000 (11:16 -0800)]
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>
11 years agomac80211: mesh_plink: don't ignore holding timer
Bob Copeland [Tue, 5 Nov 2013 19:16:56 +0000 (11:16 -0800)]
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>
11 years agomac80211: mesh_plink: collapse the two switch statements together
Bob Copeland [Tue, 5 Nov 2013 19:16:55 +0000 (11:16 -0800)]
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>
11 years agomac80211: mesh: rewrite rssi_threshold_check in C
Bob Copeland [Tue, 5 Nov 2013 19:16:54 +0000 (11:16 -0800)]
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>
11 years agomac80211: mesh_plink: group basic fitness checks
Bob Copeland [Tue, 5 Nov 2013 19:16:53 +0000 (11:16 -0800)]
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>
11 years agomac80211: mesh: factor out common plink close/estab code
Bob Copeland [Tue, 5 Nov 2013 19:16:52 +0000 (11:16 -0800)]
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>
11 years agomac80211: hold sta->lock across plink switch statements
Bob Copeland [Tue, 5 Nov 2013 19:16:51 +0000 (11:16 -0800)]
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>
11 years agomac80211: consolidate calls to plink_frame_tx
Thomas Pedersen [Tue, 5 Nov 2013 19:16:50 +0000 (11:16 -0800)]
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>
11 years agomac80211: fix off-by-one in llid check.
Bob Copeland [Tue, 5 Nov 2013 19:16:49 +0000 (11:16 -0800)]
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>
11 years agocfg80211: remove second argument from reg_process_hint()
Luis R. Rodriguez [Tue, 5 Nov 2013 17:18:02 +0000 (09:18 -0800)]
cfg80211: remove second argument from reg_process_hint()

The iniator is already available to us, so use it.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: force WIPHY_FLAG_CUSTOM_REGULATORY on wiphy_apply_custom_regulatory()
Luis R. Rodriguez [Tue, 5 Nov 2013 17:18:00 +0000 (09:18 -0800)]
cfg80211: force WIPHY_FLAG_CUSTOM_REGULATORY on wiphy_apply_custom_regulatory()

wiphy_apply_custom_regulatory() implies WIPHY_FLAG_CUSTOM_REGULATORY
but we never enforced it, do that now and warn if the driver
didn't set it. All drivers should be following this today already.

Having WIPHY_FLAG_CUSTOM_REGULATORY does not however mean you will
use wiphy_apply_custom_regulatory() though, you may have your own
_orig value set up tools / helpers. The intel drivers are examples
of this type of driver.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: DFS check chandef usable before CAC
Janusz Dziedzic [Tue, 5 Nov 2013 13:48:48 +0000 (14:48 +0100)]
cfg80211: DFS check chandef usable before CAC

Check chandef we get in CAC request is usable for CAC.
All channels have to be DFS channels. Allow DFS_USABLE
and DFS_AVAILABLE channels mix. At least one channel
has to be DFS_USABLE (require CAC).

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Reviewed-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: add helper functions for start/end freq
Janusz Dziedzic [Tue, 5 Nov 2013 13:48:47 +0000 (14:48 +0100)]
cfg80211: add helper functions for start/end freq

Add helper fuctions for start/end freq.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Reviewed-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211_hwsim: VHT add 160MHz width support
Janusz Dziedzic [Tue, 5 Nov 2013 12:03:54 +0000 (13:03 +0100)]
mac80211_hwsim: VHT add 160MHz width support

Add 160MHz width support. This could be
usefull for testing VHT160 DFS functionality.
This could be also usefull in the future when
DFS and non-DFS channels could be mixed.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211_hwsim: Add iface comb for DFS
Janusz Dziedzic [Tue, 5 Nov 2013 12:03:53 +0000 (13:03 +0100)]
mac80211_hwsim: Add iface comb for DFS

Add iface combination that will allow DFS
support. Add also debugfs dfs_simulate_radar
file that can be used to simulate radar event.
This could be useful for mac80211/cfg80211/
regulatory/hostap code testing without real HW.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211_hwsim: use debugfs_remove_recursive
Janusz Dziedzic [Fri, 1 Nov 2013 19:35:58 +0000 (20:35 +0100)]
mac80211_hwsim: use debugfs_remove_recursive

Use debugfs_remove_recursive. That avoids the need
for the new dentry pointers and extra debugfs_remove
calls.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: do not compute offset from ssn in Rx AMPDU reordering buffer
Karl Beldan [Thu, 24 Oct 2013 13:53:32 +0000 (15:53 +0200)]
mac80211: do not compute offset from ssn in Rx AMPDU reordering buffer

Currently, frames that go into the reordering buffer are stored at
index ieee80211_sn_sub(sn, tid_rx->ssn) % tid_rx->buf_size.

The offset calculation to the starting sequence number (SSN) is
useless and just adds overhead so simply use sn % tid_rx->buf_size.

This means the reordering buffer will start to be filled somewhere
in the middle (at SSN % buf_size) and continue to get used from
there, but there's no reason to start from the beginning.

Signed-off-by: Karl Beldan <karl.beldan@rivierawaves.com>
[rewrite commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: consolidate passive-scan and no-ibss flags
Luis R. Rodriguez [Mon, 21 Oct 2013 17:22:25 +0000 (19:22 +0200)]
cfg80211: consolidate passive-scan and no-ibss flags

These two flags are used for the same purpose, just
combine them into a no-ir flag to annotate no initiating
radiation is allowed.

Old userspace sending either flag will have it treated as
the no-ir flag. To be considerate to older userspace we
also send both the no-ir flag and the old no-ibss flags.
Newer userspace will have to be aware of older kernels.

Update all places in the tree using these flags with the
following semantic patch:

@@
@@
-NL80211_RRF_PASSIVE_SCAN
+NL80211_RRF_NO_IR
@@
@@
-NL80211_RRF_NO_IBSS
+NL80211_RRF_NO_IR
@@
@@
-IEEE80211_CHAN_PASSIVE_SCAN
+IEEE80211_CHAN_NO_IR
@@
@@
-IEEE80211_CHAN_NO_IBSS
+IEEE80211_CHAN_NO_IR
@@
@@
-NL80211_RRF_NO_IR | NL80211_RRF_NO_IR
+NL80211_RRF_NO_IR
@@
@@
-IEEE80211_CHAN_NO_IR | IEEE80211_CHAN_NO_IR
+IEEE80211_CHAN_NO_IR
@@
@@
-(NL80211_RRF_NO_IR)
+NL80211_RRF_NO_IR
@@
@@
-(IEEE80211_CHAN_NO_IR)
+IEEE80211_CHAN_NO_IR

Along with some hand-optimisations in documentation, to
remove duplicates and to fix some indentation.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
[do all the driver updates in one go]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agonl80211: better document NL80211_CMD_TDLS_MGMT
Arik Nemtsov [Thu, 31 Oct 2013 12:54:35 +0000 (14:54 +0200)]
nl80211: better document NL80211_CMD_TDLS_MGMT

This command has different semantics depending on the action code sent.
Document this fact and detail the supported action codes.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth...
John W. Linville [Tue, 5 Nov 2013 20:58:21 +0000 (15:58 -0500)]
Merge branch 'master' of git://git./linux/kernel/git/bluetooth/bluetooth

11 years agoMerge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi...
John W. Linville [Tue, 5 Nov 2013 20:53:10 +0000 (15:53 -0500)]
Merge branch 'for-john' of git://git./linux/kernel/git/iwlwifi/iwlwifi-next

11 years agoMerge branch 'for-linville' of git://git.kernel.org/pub/scm/linux/kernel/git/luca...
John W. Linville [Tue, 5 Nov 2013 20:51:34 +0000 (15:51 -0500)]
Merge branch 'for-linville' of git://git./linux/kernel/git/luca/wl12xx

11 years agoMerge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetoot...
John W. Linville [Tue, 5 Nov 2013 20:50:22 +0000 (15:50 -0500)]
Merge branch 'for-upstream' of git://git./linux/kernel/git/bluetooth/bluetooth-next

11 years agoMerge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
John W. Linville [Tue, 5 Nov 2013 20:49:16 +0000 (15:49 -0500)]
Merge branch 'for-john' of git://git./linux/kernel/git/jberg/mac80211

11 years agoMerge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac802...
John W. Linville [Tue, 5 Nov 2013 20:49:02 +0000 (15:49 -0500)]
Merge branch 'for-john' of git://git./linux/kernel/git/jberg/mac80211-next

Conflicts:
net/wireless/reg.c

11 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
John W. Linville [Mon, 4 Nov 2013 19:45:14 +0000 (14:45 -0500)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless

Conflicts:
drivers/net/wireless/iwlwifi/pcie/drv.c

11 years agoiwlwifi: mvm: BT Coex - fix copy paste issue
Emmanuel Grumbach [Tue, 29 Oct 2013 20:50:49 +0000 (22:50 +0200)]
iwlwifi: mvm: BT Coex - fix copy paste issue

Putting the context id of the primary phy context in
the placeholder of the secondary is obviously a bad
idea.
Spotted by smatch.

Fixes: dac94da8dba3 ("iwlwifi: mvm: new BT Coex API")
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
11 years agoiwlwifi: remove duplicate includes
Michael Opdenacker [Sun, 20 Oct 2013 05:01:00 +0000 (07:01 +0200)]
iwlwifi: remove duplicate includes

Reported by "make includecheck"

Tested that the corresponding sources still compile well on x86

Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
11 years agoiwlwifi: warn if firmware image doesn't exist
Johannes Berg [Fri, 25 Oct 2013 10:32:51 +0000 (12:32 +0200)]
iwlwifi: warn if firmware image doesn't exist

If the firmware image that we attempt to load doesn't
actually exist we have a broken firmware file or other
code not checking things correctly, so warn in such a
case. Also avoid assigning cur_ucode/ucode_loaded then.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
11 years agoiwlwifi: mvm: add missing break in debugfs
Johannes Berg [Fri, 25 Oct 2013 11:03:40 +0000 (13:03 +0200)]
iwlwifi: mvm: add missing break in debugfs

When writing the disable_power_off value, the LPRX
enable value also gets written unintentionally, so
fix that by adding the missing break statement.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
11 years agoiwlwifi: mvm: capture the FCS in monitor mode
Johannes Berg [Mon, 21 Oct 2013 10:37:53 +0000 (12:37 +0200)]
iwlwifi: mvm: capture the FCS in monitor mode

This can be useful when using the device as a sniffer.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
11 years agoiwlwifi: pcie: move warning message into warning
Johannes Berg [Mon, 28 Oct 2013 14:50:55 +0000 (15:50 +0100)]
iwlwifi: pcie: move warning message into warning

Having a WARN_ON() followed by a printed message is
less useful than having the message in the warning
so move the message.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
11 years agoiwlwifi: mvm: BT Coex fix NULL pointer dereference
Emmanuel Grumbach [Mon, 21 Oct 2013 08:03:53 +0000 (11:03 +0300)]
iwlwifi: mvm: BT Coex fix NULL pointer dereference

When we disassociate, mac80211 removes the station and
then, it sets the bss it unsets the assoc bool in bss_info.

Since the firwmware wants it the opposite (first set the
MAC context as unassoc, and only then, remove the STA of
the API), we have a small period of time in which the STA
in firmware doesn't have a valid ieee80211_sta pointer.
During that time, iwl_mvm_vif->ap_sta_id, is still set
to the STA in firmware that represent the AP.

This avoids:

[ 4481.476246] BUG: unable to handle kernel NULL pointer dereference at 00000045
[ 4481.479521] IP: [<f8416a6a>] iwl_mvm_bt_coex_reduced_txp+0x7a/0x190 [iwlmvm]
[ 4481.482023] *pde = 00000000
[ 4481.484332] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC
[ 4481.486897] Modules linked in: netconsole configfs autofs4 rfcomm(O) bnep(O) nfsd nfs_acl auth_rpcgss exportfs nfs lockd binfmt_misc sunrpc fscache arc4 iwlmvm(O) mac80211(O) btusb(O) iwlwifi(O) bluetooth(O) cfg80211(O) snd_hda_codec_hdmi coretemp dell_wmi snd_hda_codec_idt compat(O) dell_laptop aesni_intel i915 sparse_keymap dcdbas cryptd psmouse serio_raw aes_i586 microcode snd_hda_intel drm_kms_helper snd_hda_codec drm snd_pcm snd_timer i2c_algo_bit video intel_agp intel_gtt snd soundcore snd_page_alloc crc32c_intel ahci sdhci_pci libahci sdhci mmc_core e1000e xhci_hcd [last unloaded: configfs]
[ 4481.502983]
[ 4481.505599] Pid: 6507, comm: kworker/0:1 Tainted: G           O 3.4.43-dev #1 Dell Inc. Latitude E6430/0CMDYV
[ 4481.508575] EIP: 0060:[<f8416a6a>] EFLAGS: 00010246 CPU: 0
[ 4481.511248] EIP is at iwl_mvm_bt_coex_reduced_txp+0x7a/0x190 [iwlmvm]
[ 4481.513947] EAX: ffffffea EBX: 00000002 ECX: 00000001 EDX: 00000001
[ 4481.516710] ESI: ec6f0f28 EDI: 00000000 EBP: e8175dfc ESP: e8175d9c
[ 4481.519445]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[ 4481.522185] CR0: 8005003b CR2: 00000045 CR3: 01a5e000 CR4: 001407d0
[ 4481.524950] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 4481.527768] DR6: ffff0ff0 DR7: 00000400
[ 4481.530565] Process kworker/0:1 (pid: 6507, ti=e8174000 task=e8032b20 task.ti=e8174000)
[ 4481.533447] Stack:
[ 4481.536379]  e472439f 00003a12 e8032b20 e8033048 00000001 e8175ddc 00000246 e8033040
[ 4481.540132]  00000002 01814990 ec4d1ddc e8175dcc 00000000 00000000 00000000 00000000
[ 4481.543867]  00000000 00000000 00000001 000001c8 009b0002 ec4d1ddc ec6f0f28 00000000
[ 4481.547633] Call Trace:
[ 4481.550578]  [<f8418027>] iwl_mvm_bt_rssi_event+0x197/0x220 [iwlmvm]
[ 4481.553537]  [<f840919c>] iwl_mvm_stat_iterator+0xdc/0x240 [iwlmvm]
[ 4481.556582]  [<f8d129c2>] __iterate_active_interfaces+0xe2/0x1f0 [mac80211]
[ 4481.559544]  [<f84090c0>] ? iwl_mvm_update_smps+0x90/0x90 [iwlmvm]
[ 4481.562519]  [<f84090c0>] ? iwl_mvm_update_smps+0x90/0x90 [iwlmvm]
[ 4481.565498]  [<f8d12b0c>] ieee80211_iterate_active_interfaces+0x3c/0x50 [mac80211]
[ 4481.568421]  [<f8409b43>] iwl_mvm_rx_statistics+0xb3/0x130 [iwlmvm]
[ 4481.571349]  [<f8405431>] iwl_mvm_async_handlers_wk+0xc1/0xf0 [iwlmvm]
[ 4481.574251]  [<c1052915>] ? process_one_work+0x105/0x5c0
[ 4481.577162]  [<c1052991>] process_one_work+0x181/0x5c0
[ 4481.580025]  [<c1052915>] ? process_one_work+0x105/0x5c0
[ 4481.582861]  [<f8405370>] ? iwl_mvm_rx_fw_logs+0x20/0x20 [iwlmvm]
[ 4481.585722]  [<c10530f1>] worker_thread+0x121/0x2c0
[ 4481.588536]  [<c1052fd0>] ? rescuer_thread+0x1d0/0x1d0
[ 4481.591323]  [<c105af0d>] kthread+0x7d/0x90
[ 4481.594059]  [<c105ae90>] ? flush_kthread_worker+0x120/0x120
[ 4481.596868]  [<c15b7cc2>] kernel_thread_helper+0x6/0x10
[ 4481.599605] Code: 9d de c3 c8 85 c0 74 0d 80 3d f8 ae 42 f8 00 0f 84 dc 00 00 00 8b 45 c8 0f b6 d3 31 ff 89 55 c0 8b 84 90 d8 03 00 00 0f b6 55 c7 <38> 50 5b 89 45 bc 0f 84 a8 00 00 00 a1 e4 d2 04 c2 85 c0 0f 84
[ 4481.611782] EIP: [<f8416a6a>] iwl_mvm_bt_coex_reduced_txp+0x7a/0x190 [iwlmvm] SS:ESP 0068:e8175d9c
[ 4481.614985] CR2: 0000000000000045
[ 4481.687441] ---[ end trace b11bc915fbac4412 ]---

Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
11 years agoiwlwifi: transport config n_no_reclaim_cmds should be unsigned
Johannes Berg [Mon, 28 Oct 2013 18:29:38 +0000 (19:29 +0100)]
iwlwifi: transport config n_no_reclaim_cmds should be unsigned

The number of commands can never be negative, so it should
be using an unsigned type. This also shuts up an smatch
warning elsewhere in the code.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
11 years agoiwlwifi: mvm: update UAPSD support TLV bits
Alexander Bondar [Tue, 15 Oct 2013 22:21:34 +0000 (00:21 +0200)]
iwlwifi: mvm: update UAPSD support TLV bits

Change old UAPSD bit to PM_CMD_SUPPORT, and add a new bit to indicate
real UAPSD support.
Don't use UAPSD when the firmware doesn't support it.

Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
11 years agonl80211: fix channel switch parsing
Andrei Otcheretianski [Thu, 17 Oct 2013 08:52:17 +0000 (10:52 +0200)]
nl80211: fix channel switch parsing

The nl80211 attribute NL80211_ATTR_CSA_C_OFF_BEACON should be nested
inside NL80211_ATTR_CSA_IES, but commit ee4bc9e75811d2c0cb5f2a2fc5b5
("nl80211: enable IBSS support for channel switch announcements")
added a check in the outer message attributes.

Fix channel switch calls by removing the erroneus condition.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
[reword commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211_hwsim: Fix tracking of beaconing for multi-vif
Jouni Malinen [Tue, 22 Oct 2013 11:11:17 +0000 (14:11 +0300)]
mac80211_hwsim: Fix tracking of beaconing for multi-vif

mac80211_hwsim canceled beacon_timer on any vif changing from enabled
to disabled beaconing. This breaks cases where there are multiple
beaconing vifs and only one of them is removed. Fix this by tracking
beaconing status per vif and disable beacon_timer only if no active vif
remain with beaconing enabled.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: fix uninitialized variable
Michal Kazior [Fri, 18 Oct 2013 21:57:00 +0000 (14:57 -0700)]
mac80211: fix uninitialized variable

CSA completion could call in a driver
bss_info_changed() with a garbled `changed` flag
leading to all sorts of problems.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: process mesh channel switching using beacon
Chun-Yeow Yeoh [Thu, 17 Oct 2013 22:55:18 +0000 (15:55 -0700)]
mac80211: process mesh channel switching using beacon

Trigger the mesh channel switching procedure if the mesh STA
happens to miss the CSA action frame but able to receive the
beacon containing the CSA and MCSP elements from its peer
mesh STAs.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@cozybit.com>
[fix locking in ieee80211_mesh_process_chnswitch()]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years ago{nl,cfg,mac}80211: implement mesh channel switch userspace API
Chun-Yeow Yeoh [Thu, 17 Oct 2013 22:55:02 +0000 (15:55 -0700)]
{nl,cfg,mac}80211: implement mesh channel switch userspace API

Implement the required procedures for mesh channel switching as defined
in the IEEE Std 802.11-2012 section 10.9.8.4.3 and also handle the CSA
and MCSP elements as followed:
 * Add the function for updating the beacon and probe response frames
   with CSA and MCSP elements during the period of switching to the new
   channel. Both CSA and MCSP elements must be included in beacon and
   probe response frames until the intended channel switch time.
 * The ifmsh->csa_settings is set to NULL and the CSA and MCSP elements
   will then be removed from the beacon or probe response frames once the
   new channel is switched to.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years ago{nl,cfg,mac}80211: enable the triggering of CSA frame in mesh
Chun-Yeow Yeoh [Tue, 15 Oct 2013 02:08:28 +0000 (19:08 -0700)]
{nl,cfg,mac}80211: enable the triggering of CSA frame in mesh

Allow the triggering of CSA frame using mesh interface. The
rules are more or less same with IBSS, such as not allowed to
change between the band and channel width has to be same from
the previous mode. Also, move the ieee80211_send_action_csa
to a common space so that it can be re-used by mesh interface.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: process the CSA frame for mesh accordingly
Chun-Yeow Yeoh [Tue, 15 Oct 2013 02:08:27 +0000 (19:08 -0700)]
mac80211: process the CSA frame for mesh accordingly

Process the CSA frame according to the procedures define in IEEE Std
802.11-2012 section 10.9.8.4.3 as follow:
* The mesh channel switch parameters element (MCSP) must be availabe.
* If the MCSP's TTL is 1, drop the frame but still process the CSA.
* If the MCSP's precedence value is less than or equal to the current
  precedence value, drop the frame and do not process the CSA.
* The CSA frame is forwarded after TTL is decremented by 1 and the
  initiator field is set to 0. Transmit restrict field and others
  are maintained as is.
* No beacon or probe response frame are handled here.

Also, introduce the debug message used for mesh CSA purpose.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: refactor the parsing of chan switch ie
Chun-Yeow Yeoh [Tue, 15 Oct 2013 02:08:29 +0000 (19:08 -0700)]
mac80211: refactor the parsing of chan switch ie

Refactor the channel switch IE parsing to reduce the number
of function parameters.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: add ieee80211_tx_prepare_skb() helper function
Felix Fietkau [Mon, 14 Oct 2013 16:01:00 +0000 (18:01 +0200)]
mac80211: add ieee80211_tx_prepare_skb() helper function

This can be used by a driver to prepare skbs for transmission, which were
obtained via functions such as ieee80211_probereq_get or
ieee80211_nullfunc_get.

This is useful for drivers that want to send those frames directly, but
need rate control information to be prepared first.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: export reg_initiator_name()
Luis R. Rodriguez [Tue, 15 Oct 2013 00:42:06 +0000 (17:42 -0700)]
cfg80211: export reg_initiator_name()

Drivers can now use this to parse the regulatory request and
be more verbose when needed.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: fixes for mesh powersave logic
Marco Porsch [Tue, 15 Oct 2013 10:29:24 +0000 (12:29 +0200)]
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>
11 years agomac80211: Remove check for offchannel state when waking netdev queues
Seth Forshee [Tue, 15 Oct 2013 21:16:21 +0000 (16:16 -0500)]
mac80211: Remove check for offchannel state when waking netdev queues

6c17b77b67587b9f9e3070fb89fe98cef3187131 ensures that a device's
mac80211 queues will remain stopped while offchannel. Since the
vif can no longer be offchannel when the queues wake it's not
necessary to check for this before waking its netdev queues.

Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agonet: rfkill: gpio: add ACPI support
Heikki Krogerus [Wed, 16 Oct 2013 10:53:43 +0000 (13:53 +0300)]
net: rfkill: gpio: add ACPI support

Including ACPI ID for Broadcom GPS receiver BCM4752.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Rhyland Klein <rklein@nvidia.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agonet: rfkill: gpio: prepare for DT and ACPI support
Heikki Krogerus [Wed, 16 Oct 2013 10:53:42 +0000 (13:53 +0300)]
net: rfkill: gpio: prepare for DT and ACPI support

This will add the relevant values like the gpios and the
type in rfkill_gpio_platform_data to the rfkill_gpio_data
structure. It will allow those values to be easily picked
from DT and ACPI tables later.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Rhyland Klein <rklein@nvidia.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agonet: rfkill: gpio: spinlock-safe GPIO access
Heikki Krogerus [Wed, 16 Oct 2013 10:53:41 +0000 (13:53 +0300)]
net: rfkill: gpio: spinlock-safe GPIO access

This sets the direction of the gpio once when it's requested,
and uses the spinlock-safe gpio_set_state() to change the
state.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Rhyland Klein <rklein@nvidia.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agonet: rfkill: gpio: clean up clock handling
Heikki Krogerus [Wed, 16 Oct 2013 10:53:40 +0000 (13:53 +0300)]
net: rfkill: gpio: clean up clock handling

Use a simple flag to see the state of the clock, and make
the clock available even without a name. Also, get rid of
HAVE_CLK dependency.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Rhyland Klein <rklein@nvidia.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agonet: rfkill: gpio: convert to resource managed allocation
Heikki Krogerus [Wed, 16 Oct 2013 10:53:39 +0000 (13:53 +0300)]
net: rfkill: gpio: convert to resource managed allocation

And remove now unneeded resource freeing.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Rhyland Klein <rklein@nvidia.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agocfg80211: fix docbook references
Johannes Berg [Mon, 14 Oct 2013 14:11:52 +0000 (16:11 +0200)]
cfg80211: fix docbook references

Two functions were changed but their references weren't
updated in the docbook template, propagate the change.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
11 years agomac80211: add missing IEEE80211_HW_SUPPORTS_HT_CCK_RATES docs
Johannes Berg [Mon, 14 Oct 2013 08:05:16 +0000 (10:05 +0200)]
mac80211: add missing IEEE80211_HW_SUPPORTS_HT_CCK_RATES docs

Document the IEEE80211_HW_SUPPORTS_HT_CCK_RATES flag.

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>