Commit Graph

380 Commits

Author SHA1 Message Date
Vasanthakumar Thiagarajan cd50ac0f31 cfg80211: Fix dfs state propagation for non-DFS center channel
When part of a bigger bandwidth (160 MHz) channel falls in DFS
channel range it is possible that the  center frequency may not
necessarily be a radar channel. Remove the sanity check on channel
flag for IEEE80211_CHAN_RADAR in regulatory_propagate_dfs_state(),
this should fix the dfs state propagation for non-DFS center freq
which has DFS channels in it's bandwidth, should also fix unnecessary
WARN_ON() spam in regulatory_propagate_dfs_state().

Fixes: 8976672736 ("cfg80211: Share Channel DFS state across wiphys of same DFS domain")
Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qti.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-04-25 21:42:52 +02:00
Vasanthakumar Thiagarajan 8976672736 cfg80211: Share Channel DFS state across wiphys of same DFS domain
Sharing DFS channel state across multiple wiphys (radios) could
be useful with multiple radios on the system. When one radio
completes CAC and markes the channel available another radio
can use this information and start beaconing without really doing
CAC.

Whenever there is a state change in dfs channel associated to
a particular wiphy the the same state change is propagated to
other wiphys having the same DFS reg domain configuration.
Also when a new wiphy is created the dfs channel state of
other existing wiphys of same DFS domain is copied.

Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qti.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-03-06 13:54:20 +01:00
Vasanthakumar Thiagarajan b35a51c7dd cfg80211: Make pre-CAC results valid only for ETSI domain
DFS requirement for ETSI domain (section 4.7.1.4 in
ETSI EN 301 893 V1.8.1) is the only one which explicitly
states that once DFS channel is marked as available afer
the CAC, this channel will remain in available state even
moving to a different operating channel. But the same is
not explicitly stated in FCC DFS requirement. Also, Pre-CAC
requriements are not explicitly mentioned in FCC requirement.
Current implementation in keeping DFS channel in available
state is same as described in ETSI domain.

For non-ETSI DFS domain, this patch gives a grace period of 2 seconds
since the completion of successful CAC before moving the channel's
DFS state to 'usable' from 'available' state. The same grace period
is checked against the channel's dfs_state_entered timestamp while
deciding if a DFS channel is available for operation. There is a new
radar event, NL80211_RADAR_PRE_CAC_EXPIRED, reported when DFS channel
is moved from available to usable state after the grace period. Also
make sure the DFS channel state is reset to usable once the beaconing
operation on that channel is brought down (like stop_ap, leave_ibss
and leave_mesh) in non-ETSI domain.

Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qti.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-03-06 13:54:15 +01:00
Rafał Miłecki 4787cfa084 cfg80211: move function checking range fit to util.c
It is needed for another cfg80211 helper that will be out of reg.c so
move it to common util.c file and make it non-static.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-01-06 13:54:04 +01:00
Johannes Berg 53873f134d cfg80211: make wdev_list accessible to drivers
There's no harm in having drivers read the list, since they can
use RCU protection or RTNL locking; allow this to not require
each and every driver to also implement its own bookkeeping.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-05-12 11:16:40 +02:00
Johannes Berg 57fbcce37b cfg80211: remove enum ieee80211_band
This enum is already perfectly aliased to enum nl80211_band, and
the only reason for it is that we get IEEE80211_NUM_BANDS out of
it. There's no really good reason to not declare the number of
bands in nl80211 though, so do that and remove the cfg80211 one.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-12 15:56:15 +02:00
David S. Miller d67703fced Here's another round of updates for -next:
* big A-MSDU RX performance improvement (avoid linearize of paged RX)
  * rfkill changes: cleanups, documentation, platform properties
  * basic PBSS support in cfg80211
  * MU-MIMO action frame processing support
  * BlockAck reordering & duplicate detection offload support
  * various cleanups & little fixes
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Merge tag 'mac80211-next-for-davem-2016-02-26' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg says:

====================
Here's another round of updates for -next:
 * big A-MSDU RX performance improvement (avoid linearize of paged RX)
 * rfkill changes: cleanups, documentation, platform properties
 * basic PBSS support in cfg80211
 * MU-MIMO action frame processing support
 * BlockAck reordering & duplicate detection offload support
 * various cleanups & little fixes
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-01 17:03:27 -05:00
Johannes Berg c799ba6eab cfg80211: remove CFG80211_REG_DEBUG
Instead of having this Kconfig option, which just *floods* the
kernel log,
 * remove the per-channel prints that are fairly useless anyway
 * convert the conditional printing to pr_debug()

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-01-14 11:13:09 +01:00
Johannes Berg c3826807bb regulatory: fix world regulatory domain data
The rule definitions here aren't really valid, they would
be rejected if it came from userspace due to the bandwidth
specified being bigger than the rule's width.

This is fairly much inconsequential since the other rules
around them do enable the bandwidth, but express that better
using the NL80211_RRF_AUTO_BW flag.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-01-14 11:10:13 +01:00
Dave Young 94c4fd641e wireless: change cfg80211 regulatory domain info as debug messages
cfg80211 module prints a lot of messages like below. Actually printing
once is acceptable but sometimes it will print again and again, it looks
very annoying. It is better to change these detail messages to debugging
only.

cfg80211: World regulatory domain updated:
cfg80211:  DFS Master region: unset
cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
cfg80211:   (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
cfg80211:   (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
cfg80211:   (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)

The changes in this patch is to replace pr_info with pr_debug in function
print_rd_rules and print_regdomain_info

Signed-off-by: Dave Young <dyoung@redhat.com>
[change some pr_err() statements to at least keep the alpha2]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-01-14 11:10:11 +01:00
David S. Miller b3e0d3d7ba Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/geneve.c

Here we had an overlapping change, where in 'net' the extraneous stats
bump was being removed whilst in 'net-next' the final argument to
udp_tunnel6_xmit_skb() was being changed.

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-12-17 22:08:28 -05:00
Ola Olsson 09d118008f nl80211: fix a few memory leaks in reg.c
The first leak occurs when entering the default case
in the switch for the initiator in set_regdom.
The second leaks a platform_device struct if the
platform registration in regulatory_init succeeds but
the sub sequent regulatory hint fails due to no memory.

Signed-off-by: Ola Olsson <ola.olsson@sonymobile.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-15 13:08:02 +01:00
Michal Sojka 1aeb135f84 cfg80211: reg: Refactor calculation of bandwidth flags
The same piece of code appears at two places. Make a function from it.

Signed-off-by: Michal Sojka <sojkam1@fel.cvut.cz>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-04 14:43:32 +01:00
Michal Sojka 491728746b cfg80211: reg: Remove unused function parameter
Signed-off-by: Michal Sojka <sojkam1@fel.cvut.cz>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-04 14:43:32 +01:00
Johannes Berg a515de6607 cfg80211: reg: fix reg_ignore_cell_hint return type
The return type should be enum reg_request_treatment for both
branches of the #ifdef.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-10-16 09:15:45 +02:00
Johannes Berg 81e925747e cfg80211: reg: reduce chan_reg_rule_print_dbg() ifdef
The function is void and static, so just ifdef its contents
instead of duplicating the declaration.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-10-16 09:15:45 +02:00
Johannes Berg 9f50680292 cfg80211: reg: fix antenna gain in chan_reg_rule_print_dbg()
Printing "N/A mBi" is strange - print just "N/A" instead.

Also add a missing opening parenthesis.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-10-16 09:15:44 +02:00
Johannes Berg d34265a3ee cfg80211: reg: centralize freeing ignored requests
Instead of having a lot of places that free ignored requests
and then return REG_REQ_OK, make reg_process_hint() process
REG_REQ_IGNORE by freeing the request, and let functions it
calls return that instead of freeing.

This also fixes a leak when a second (different) country IE
hint was ignored.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-10-16 09:15:44 +02:00
Johannes Berg 480908a7ec cfg80211: reg: clarify 'treatment' handling in reg_process_hint()
This function can only deal with treatment values OK and ALREADY_SET
so make the callees not return anything else and warn if they do.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-10-16 09:15:44 +02:00
Johannes Berg fd453d3c53 cfg80211: reg: rename reg_regdb_query() to reg_query_builtin()
The new name better reflects the functionality.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-10-16 09:15:43 +02:00
Johannes Berg b686303691 cfg80211: reg: make CRDA support optional
If there's a built-in regulatory database, there may be little point
in also calling out to CRDA and failing if the system is configured
that way. Allow removing CRDA support to save ~1K kernel size.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-10-16 09:15:39 +02:00
Johannes Berg 922ec58c70 cfg80211: reg: remove useless reg_timeout scheduling
When the functions reg_set_rd_driver() and reg_set_rd_country_ie()
return with an error, the calling function already restores data
by calling restore_regulatory_settings(), so there's no need to
also schedule a timeout (which would lead to other side effects
such as indicating CRDA failed, which clearly isn't true.) Remove
the scheduling.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-10-15 16:17:09 +02:00
Johannes Berg c7d319e542 cfg80211: reg: search built-in database directly
Instead of searching the built-in database only in the worker,
search it directly and return an error if the entry cannot be
found (or memory cannot be allocated.) This means that builtin
database queries no longer rely on the timeout.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-10-15 16:17:09 +02:00
Johannes Berg cecbb069cc cfg80211: reg: rename reg_call_crda to reg_query_database
The new name is more appropriate since in the case of a built-in
database it may not really rely on CRDA.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-10-15 16:17:08 +02:00
Johannes Berg 25b20dbdc4 cfg80211: reg: fix reg_call_crda() return value bug
The function reg_call_crda() can't actually validly return
REG_REQ_IGNORE as it does now when calling CRDA fails since
that return value isn't handled properly. Fix that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-10-15 16:17:08 +02:00
Johannes Berg 7cf3741823 cfg80211: reg: remove useless non-NULL check
There's no way that the alpha2 pointer can be NULL, so
no point in checking that it isn't.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-10-15 16:17:07 +02:00
Johannes Berg 8047d2616d cfg80211: fix gHz to GHz
There's no "g" prefix, only "G" (1e9) that was clearly intended here.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-10-15 16:17:07 +02:00
David S. Miller 2579c98f0d For the current cycle, we have the following right now:
* many internal fixes, API improvements, cleanups, etc.
  * full AP client state tracking in cfg80211/mac80211 from Ayala
  * VHT support (in mac80211) for mesh
  * some A-MSDU in A-MPDU support from Emmanuel
  * show current TX power to userspace (from Rafał)
  * support for netlink dump in vendor commands (myself)
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Merge tag 'mac80211-next-for-davem-2015-10-05' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg says:

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

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-07 04:29:18 -07:00
Johannes Berg 8de1c63ba1 wireless: make __freq_reg_info static
As pointed out by sparse, this symbol should be static, make it so.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-09-22 15:21:20 +02:00
Maciej S. Szmigiero 549cc1c560 cfg80211: regulatory: restore proper user alpha2
restore_regulatory_settings() should restore alpha2
as computed in restore_alpha2(), not raw user_alpha2 to
behave as described in the comment just above that code.

This fixes endless loop of calling CRDA for "00" and "97"
countries after resume from suspend on my laptop.

Looks like others had the same problem, too:
http://ath9k-devel.ath9k.narkive.com/knY5W6St/ath9k-and-crda-messages-in-logs
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/899335
https://forum.porteus.org/viewtopic.php?t=4975&p=36436
https://forums.opensuse.org/showthread.php/483356-Authentication-Regulatory-Domain-issues-ath5k-12-2

Signed-off-by: Maciej Szmigiero <mail@maciej.szmigiero.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-09-04 14:29:25 +02:00
Matthias May 4edd56981c cfg80211: regulatory: handle 5 and 10 MHz channels properly
The original assumption of 20MHz wide channels hasn't been true since
the addition of support for 5 and 10 MHz channels.
Change the code to no longer disable all channels that don't fit into
the 20MHz grid, but instead set the appropriate flags to disable
operation on specific bandwidths.

Signed-off-by: Matthias May <matthias.may@neratec.com>
[reword commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-08-14 17:48:46 +02:00
Johannes Berg 72bbe3d1c2 Merge branch 'mac80211' into mac80211-next
This is necessary to merge the new TDLS and mesh patches,
as they depend on some fixes.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-07-17 15:39:41 +02:00
John Linville 841b351cf9 wireless: remove superfluous if statement in regulatory code
Commit eeca9fce1d ('cfg80211: Schedule timeout for all CRDA calls')
left behind a superfluous check after it removed some earlier code.

In reg_process_hint, the test of "treatment == REG_REQ_IGNORE ||
treatment == REG_REQ_ALREADY_SET" is superfluous because the code in the
if-then branch is identical to the code after the if statement.

Coverity CID #1295939

I also removed the unnecessary assignment of treatment in this case,
and added a comment reminding any future patch authors to ensure that
treatment is properly assigned before it is used after the switch.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-07-17 15:38:27 +02:00
Arik Nemtsov 923b352f19 cfg80211: use RTNL locked reg_can_beacon for IR-relaxation
The RTNL is required to check for IR-relaxation conditions that allow
more channels to beacon. Export an RTNL locked version of reg_can_beacon
and use it where possible in AP/STA interface type flows, where
IR-relaxation may be applicable.

Fixes: 06f207fc54 ("cfg80211: change GO_CONCURRENT to IR_CONCURRENT for STA")
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-07-17 15:02:02 +02:00
Thomas Petazzoni 042ab5fc7a wireless: regulatory: reduce log level of CRDA related messages
With a basic Linux userspace, the messages "Calling CRDA to update
world regulatory domain" appears 10 times after boot every second or
so, followed by a final "Exceeded CRDA call max attempts. Not calling
CRDA". For those of us not having the corresponding userspace parts,
having those messages repeatedly displayed at boot time is a bit
annoying, so this commit reduces their log level to pr_debug().

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-07-17 14:37:23 +02:00
Arik Nemtsov 06f207fc54 cfg80211: change GO_CONCURRENT to IR_CONCURRENT for STA
The GO_CONCURRENT regulatory definition can be extended to station
interfaces requesting to IR as part of TDLS off-channel operations.
Rename the GO_CONCURRENT flag to IR_CONCURRENT and allow the added
use-case.

Change internal users of GO_CONCURRENT to use the new definition.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-05-06 15:50:02 +02:00
Ilan peer c37722bd19 cfg80211: Stop calling crda if it is not responsive
Patch eeca9fce1d (cfg80211: Schedule
timeout for all CRDA call) introduced a regression, where in case
that crda is not installed (or not configured properly etc.), the
regulatory core will needlessly continue to call it, polluting the
log with the following log:

"cfg80211: Calling CRDA to update world regulatory domain"

Fix this by limiting the number of continuous CRDA request failures.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-04-01 11:22:38 +02:00
David S. Miller 7b6249bba9 Lots of updates for net-next; along with the usual flurry
of small fixes, cleanups and internal features we have:
  * VHT support for TDLS and IBSS (conditional on drivers though)
  * first TX performance improvements (the biggest will come later)
  * many suspend/resume (race) fixes
  * name_assign_type support from Tom Gundersen
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Merge tag 'mac80211-next-for-davem-2015-03-30' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg says:

====================
Lots of updates for net-next; along with the usual flurry
of small fixes, cleanups and internal features we have:
 * VHT support for TDLS and IBSS (conditional on drivers though)
 * first TX performance improvements (the biggest will come later)
 * many suspend/resume (race) fixes
 * name_assign_type support from Tom Gundersen
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-31 16:39:04 -04:00
Ben 2e54a6895e cfg80211: Process all pending regulatory requests/hints
It is possible that there are several regulatory requests
pending, but the processing of the last one does not call
CRDA, and thus the other requests are not handled.

Fix this by rescheduling the work until all requests have
been processed.

Signed-off-by: Ben Rosenfeld <ben.rosenfeld@intel.com>
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-17 11:02:42 +01:00
Ilan peer eeca9fce1d cfg80211: Schedule timeout for all CRDA calls
Timeout was scheduled only in case CRDA was called due to user hints,
but was not scheduled for other cases. This can result in regulatory
hint processing getting stuck in case that there is no CRDA configured.

Change this by scheduling a timeout every time CRDA is called. In
addition, in restore_regulatory_settings() all pending requests are
restored (and not only the user ones).

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Acked-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-06 09:37:59 +01:00
Ilan peer 0505075360 cfg80211: Add API to change the indoor regulatory setting
Previously, the indoor setting configuration assumed that as
long as a station interface is connected, the indoor environment
setting does not change. However, this assumption is problematic
as:

- It is possible that a station interface is connected to a mobile
  AP, e.g., softAP or a P2P GO, where it is possible that both the
  station and the mobile AP move out of the indoor environment making
  the indoor setting invalid. In such a case, user space has no way to
  invalidate the setting.
- A station interface disconnection does not necessarily imply that
  the device is no longer operating in an indoor environment, e.g.,
  it is possible that the station interface is roaming but is still
  stays indoor.

To handle the above, extend the indoor configuration API to allow
user space to indicate a change of indoor settings, and allow it to
indicate weather it controls the indoor setting, such that:

1. If the user space process explicitly indicates that it is going
   to control the indoor setting, do not clear the indoor setting
   internally, unless the socket is released. The user space process
   should use the NL80211_ATTR_SOCKET_OWNER attribute in the command
   to state that it is going to control the indoor setting.
2. Reset the indoor setting when restoring the regulatory settings in
   case it is not owned by a user space process.

Based on the above, a user space tool that continuously monitors the
indoor settings, i.e., tracking power setting, location etc., can
indicate environment changes to the regulatory core.

It should be noted that currently user space is the only provided mechanism
used to hint to the regulatory core over the indoor/outdoor environment --
while the country IEs do have an environment setting this has been completely
ignored by the regulatory core by design for a while now since country IEs
typically can contain bogus data.

Acked-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: ArikX Nemtsov <arik@wizery.com>
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-06 09:37:47 +01:00
Ilan peer 0c4ddcd214 cfg80211: Simplify the handling of regulatory indoor setting
Directly update the indoor setting without wrapping it as
a regulatory request, to simplify the processing.

Acked-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-03-06 09:37:38 +01:00
Jason Abele 28981e5eb4 cfg80211: fix n_reg_rules to match world_regdom
There are currently 8 rules in the world_regdom, but only the first 6
are applied due to an incorrect value for n_reg_rules.  This causes
channels 149-165 and 60GHz to be disabled.

Signed-off-by: Jason Abele <jason@aether.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-02-24 10:58:37 +01:00
David S. Miller 95f873f2ff Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	arch/arm/boot/dts/imx6sx-sdb.dts
	net/sched/cls_bpf.c

Two simple sets of overlapping changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-27 16:59:56 -08:00
Arik Nemtsov ef51fb1d1c cfg80211: avoid reg-hints in self-managed only systems
When a system contains only self-managed regulatory devices all hints
from the regulatory core are ignored. Stop hint processing early in this
case. These systems usually don't have CRDA deployed, which results in
endless (irrelevent) logs of the form:
cfg80211: Calling CRDA to update world regulatory domain

Make sure there's at least one self-managed device before discarding a
hint, in order to prevent initial hints from disappearing on CRDA
managed systems.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-01-14 09:43:44 +01:00
Arik Nemtsov 2c3e861c94 cfg80211: introduce sync regdom set API for self-managed
A self-managed device will sometimes need to set its regdomain synchronously.
Notably it should be set before usermode has a chance to query it. Expose
a new API to accomplish this which requires the RTNL.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-01-14 09:43:44 +01:00
Arik Nemtsov 20658702e0 cfg80211: fix deadlock during reg chan check
If a P2P GO is active, the cfg80211_reg_can_beacon function will take
the wdev lock, in its call to cfg80211_go_permissive_chan. But the wdev lock
is already taken by the parent channel-checking function, causing a
deadlock.
Split the checking code into two parts. The first part will check if the
wdev is active and saves the channel under the wdev lock. The second part
will check actual channel validity according to type.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-01-07 14:53:46 +01:00
Johannes Berg 3a4b0c948d Merge branch 'mac80211' into mac80211-next
Merge mac80211.git to get some changes that would otherwise
cause conflicts with new changes coming here.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-01-07 14:39:16 +01:00
Arik Nemtsov db8dfee57d cfg80211: avoid intersection when applying self-managed reg
The custom-reg handling function can currently only add flags to a given
channel. This results in stale flags being left applied. In some cases
a channel was disabled and even the orig_flags were changed to reflect
this.

Previously the API was designed for a single invocation before wiphy
registration, so this didn't matter. The previous approach doesn't scale
well to self-managed regulatory devices, particularly when a more
permissive regdom is applied after a restrictive one.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-12-17 11:49:55 +01:00
Jonathan Doron b0d7aa5959 cfg80211: allow wiphy specific regdomain management
Add a new regulatory flag that allows a driver to manage regdomain
changes/updates for its own wiphy.
A self-managed wiphys only employs regulatory information obtained from
the FW and driver and does not use other cfg80211 sources like
beacon-hints, country-code IEs and hints from other devices on the same
system. Conversely, a self-managed wiphy does not share its regulatory
hints with other devices in the system. If a system contains several
devices, one or more of which are self-managed, there might be
contradictory regulatory settings between them. Usage of flag is
generally discouraged. Only use it if the FW/driver is incompatible
with non-locally originated hints.

A new API lets the driver send a complete regdomain, to be applied on
its wiphy only.

After a wiphy-specific regdomain change takes place, usermode will get
a new type of change notification. The regulatory core also takes care
enforce regulatory restrictions, in case some interfaces are on
forbidden channels.

Signed-off-by: Jonathan Doron <jonathanx.doron@intel.com>
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-12-17 11:49:55 +01:00