Commit Graph

1938 Commits

Author SHA1 Message Date
vamsi krishna 088e8df82f cfg80211: Add support to update connection parameters
Add functionality to update the connection parameters when in connected
state, so that driver/firmware uses the updated parameters for
subsequent roaming. This is for drivers that support internal BSS
selection and roaming. The new command does not change the current
association state, i.e., it can be used to update IE contents for future
(re)associations without causing an immediate disassociation or
reassociation with the current BSS.

This commit implements the required functionality for updating IEs for
(Re)Association Request frame only. Other parameters can be added in
future when required.

Signed-off-by: vamsi krishna <vamsin@qti.qualcomm.com>
Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-27 16:03:28 +02:00
Johannes Berg 8ac6344865 cfg80211: handle fragmented IEs in splitting
The IEs "output" can sometimes combine IEs coming from userspace
with IEs generated in the kernel - in particular mac80211 does
this for association frames.

Add support in this code for the 802.11 IE fragmentation.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-27 16:03:27 +02:00
Michael Braun ce0ce13a1c cfg80211: configure multicast to unicast for AP interfaces
Add the ability to configure if an AP (and associated VLANs) will
do multicast-to-unicast conversion for ARP, IPv4 and IPv6 frames
(possibly within 802.1Q). If enabled, such frames are to be sent
to each station separately, with the DA replaced by their own MAC
address rather than the group address.

Note that this may break certain expectations of the receiver,
such as the ability to drop unicast IP packets received within
multicast L2 frames, or the ability to not send ICMP destination
unreachable messages for packets received in L2 multicast (which
is required, but the receiver can't tell the difference if this
new option is enabled.)

This also doesn't implement the 802.11 DMS (directed multicast
service).

Signed-off-by: Michael Braun <michael-dev@fami-braun.de>
[fix disabling, add better documentation & commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-27 16:03:27 +02:00
Jouni Malinen 348bd45669 cfg80211: Add KEK/nonces for FILS association frames
The new nl80211 attributes can be used to provide KEK and nonces to
allow the driver to encrypt and decrypt FILS (Re)Association
Request/Response frames in station mode.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-27 16:03:24 +02:00
Jouni Malinen 631810603a cfg80211: Add Fast Initial Link Setup (FILS) auth algs
This defines authentication algorithms for FILS (IEEE 802.11ai).

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-27 16:03:23 +02:00
Jouni Malinen 11b6b5a4ce cfg80211: Rename SAE_DATA to more generic AUTH_DATA
This adds defines and nl80211 extensions to allow FILS Authentication to
be implemented similarly to SAE. FILS does not need the special rules
for the Authentication transaction number and Status code fields, but it
does need to add non-IE fields. The previously used
NL80211_ATTR_SAE_DATA can be reused for this to avoid having to
duplicate that implementation. Rename that attribute to more generic
NL80211_ATTR_AUTH_DATA (with backwards compatibility define for
NL80211_SAE_DATA).

Also document the special rules related to the Authentication
transaction number and Status code fiels.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-27 16:03:20 +02:00
Johannes Berg bfe2c7b1cc nl80211: use nla_parse_nested() instead of nla_parse()
It's just an inline doing the same thing, but the code
is nicer with it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-27 16:03:20 +02:00
Johannes Berg 1794899e8b nl80211: move unsplit command advertising to a separate function
When we split the wiphy dump because it got too large, I added a
comment and asked that all new command advertising be done only
for userspace clients capable of receiving split data, in order
to not break older ones (which can't use the new commands anyway)

This mostly worked, and we haven't added many new commands, but
I occasionally get patches that modify the wrong place.

Make this easier to detect and understand by splitting out the
old commands to a separate function that makes it more clear it
should never be modified again.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-27 16:03:19 +02:00
Johannes Berg 4c8dea638c cfg80211: validate beacon int as part of iface combinations
Remove the pointless checking against interface combinations in
the initial basic beacon interval validation, that currently isn't
taking into account radar detection or channels properly. Instead,
just validate the basic range there, and then delay real checking
to the interface combination validation that drivers must do.

This means that drivers wanting to use the beacon_int_min_gcd will
now have to pass the new_beacon_int when validating the AP/mesh
start.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-27 09:18:07 +02:00
Johannes Berg 56271da29c cfg80211: disallow beacon_int_min_gcd with IBSS
This can't really be supported right now, because the IBSS
interface may change its beacon interval at any time due to
joining another network; thus, there's already "support"
for different beacon intervals here, implicitly.

Until we figure out how we should handle this case (continue
to allow it to arbitrarily join? Join only if compatible?)
disallow advertising that different beacon intervals are
supported if IBSS is allowed.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-27 09:08:45 +02:00
Johannes Berg 275fcf62c2 cfg80211: mesh: track (and thus validate) beacon interval
This is needed for beacon interval validation; if we don't
store it, then new interfaces added won't validate that the
beacon interval is the same as existing ones. Fix this.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-27 09:08:45 +02:00
Johannes Berg 0507a3ac6e cfg80211: fix beacon interval in interface combination iteration
We shouldn't abort the iteration with an error when one of the
potential combinations can't accomodate the beacon interval
request, we should just skip that particular combination. Fix
the code to do so.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-27 09:08:44 +02:00
Arend Van Spriel 73c7da3dae cfg80211: add generic helper to check interface is running
Add a helper using wdev to check if interface is running. This
deals with both non-netdev and netdev interfaces. In struct
wireless_dev replace 'p2p_started' and 'nan_started' by
'is_running' as those are mutually exclusive anyway, and unify
all the code to use wdev_running().

Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-27 09:08:44 +02:00
Johannes Berg 8f20542386 wireless: deprecate WDS and disable by default
The old WDS 4-addr frame support is very limited, e.g.
 * no encryption is possible on such links
 * it cannot support rate/HT/VHT negotiation
 * management APIs are very restricted

These make the WDS legacy mode useless in practice.

All of these are resolved by the 4-addr AP/client support,
so there's also no reason to improve WDS in the future.

Therefore, add a Kconfig option to disable legacy WDS.
This gives people an "emergency valve" while they migrate
to the better-supported 4-addr AP/client option; we plan
to remove it (and the associated cfg80211/mac80211 code,
which is the ultimate goal) in the future.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-27 09:08:43 +02:00
Johannes Berg e1957dba5b cfg80211: process events caused by suspend before suspending
When suspending without WoWLAN, cfg80211 will ask drivers to
disconnect. Even when the driver does this synchronously, and
immediately returns with a notification, cfg80211 schedules
the handling thereof to a workqueue, and may then call back
into the driver when the driver was already suspended/ing.

Fix this by processing all events caused by cfg80211_leave_all()
directly after that function returns. The driver still needs to
do the right thing here and wait for the firmware response, but
that is - at least - true for mwifiex where this occurred.

Reported-by: Amitkumar Karwar <akarwar@marvell.com>
Tested-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-26 07:59:52 +02:00
Andrei Otcheretianski 0ea2a2ee8d cfg80211: allow vendor commands to be sent to nan interface
Allow vendor commands that require WIPHY_VENDOR_CMD_NEED_RUNNING flag
to be sent to NAN interface.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-19 12:16:02 +02:00
Ilan Peer 0711d63878 cfg80211: allow aborting in-progress connection atttempts
On a disconnect request from userspace, cfg80211 currently calls
called rdev_disconnect() only in case that 'current_bss' was set,
i.e. connection had been established.

Change this to allow the userspace call to succeed and call the
driver's disconnect() method also while the connection attempt is
in progress, to be able to abort attempts.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
[change commit subject/message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-19 12:15:38 +02:00
Wei Yongjun 320c975f18 cfg80211: fix possible memory leak in cfg80211_iter_combinations()
'limits' is malloced in cfg80211_iter_combinations() and should be freed
before leaving from the error handling cases, otherwise it will cause
memory leak.

Fixes: 0c317a02ca ("cfg80211: support virtual interfaces with different beacon intervals")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-18 08:52:00 +02:00
Johannes Berg f83ace3b1e nl80211: ifdef WoWLAN related policies
To avoid unused variable warnings when CONFIG_PM isn't set,
add the appropriate ifdef to the policies that are only used
for WoWLAN, which can only be invoked when CONFIG_PM is set.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-17 08:04:07 +02:00
Johannes Berg 1609d18de6 nl80211: correctly use nl80211_nan_srf_policy
This was clearly intended to be used in the attribute parsing,
so do that instead of leaving the attribute policy unused.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-17 08:02:48 +02:00
Purushottam Kushwaha 0c317a02ca cfg80211: support virtual interfaces with different beacon intervals
This commit provides a mechanism for the host drivers to advertise the
support for different beacon intervals among the respective interface
combinations in a group, through NL80211_IFACE_COMB_BI_MIN_GCD (u32).

This value will be compared against GCD of all beaconing interfaces of
matching combinations.

If the driver doesn't advertise this value, the old behaviour where
all beacon intervals must be identical is retained.

If it is specified, then any beacon interval for an interface in the
interface combination as well as the GCD of all active beacon intervals
in the combination must be greater or equal to this value.

Signed-off-by: Purushottam Kushwaha <pkushwah@qti.qualcomm.com>
[change commit message, some variable names, small other things]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-13 14:28:29 +02:00
Purushottam Kushwaha e227300c83 cfg80211: pass struct to interface combination check/iter
Move the growing parameter list to a structure for the interface
combination check and iteration functions in cfg80211 and mac80211
to make the code easier to understand.

Signed-off-by: Purushottam Kushwaha <pkushwah@qti.qualcomm.com>
[edit commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-13 13:39:49 +02:00
Johannes Berg 8b935ee2ea cfg80211: add ability to check DA/SA in A-MSDU decapsulation
We should not accept arbitrary DA/SA inside A-MSDUs, it could be used
to circumvent protections, like allowing a station to send frames and
make them seem to come from somewhere else.

Add the necessary infrastructure in cfg80211 to allow such checks, in
further patches we'll start using them.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-12 09:19:10 +02:00
Johannes Berg 7f6990c830 cfg80211: let ieee80211_amsdu_to_8023s() take only header-less SKB
There's only a single case where has_80211_header is passed as true,
which is in mac80211. Given that there's only simple code that needs
to be done before calling it, export that function from cfg80211
instead and let mac80211 call it itself.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-12 09:19:10 +02:00
Johannes Berg 1e1430d528 Merge remote-tracking branch 'net-next/master' into mac80211-next
Resolve the merge conflict between Felix's/my and Toke's patches
coming into the tree through net and mac80211-next respectively.
Most of Felix's changes go away due to Toke's new infrastructure
work, my patch changes to "goto begin" (the label wasn't there
before) instead of returning NULL so flow control towards drivers
is preserved better.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-10-04 09:46:44 +02:00
Ayala Beker 368e5a7b4e cfg80211: Provide an API to report NAN function termination
Provide a function that reports NAN DE function termination. The function
may be terminated due to one of the following reasons: user request,
ttl expiration or failure.
If the NAN instance is tied to the owner, the notification will be
sent to the socket that started the NAN interface only

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-30 13:21:37 +02:00
Ayala Beker 50bcd31d99 cfg80211: provide a function to report a match for NAN
Provide a function the driver can call to report a match.
This will send the event to the user space.
If the NAN instance is tied to the owner, the notifications will be
sent to the socket that started the NAN interface only.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-30 13:21:32 +02:00
Ayala Beker a5a9dcf291 cfg80211: allow the user space to change current NAN configuration
Some NAN configuration paramaters may change during the operation of
the NAN device. For example, a user may want to update master preference
value when the device gets plugged/unplugged to the power.
Add API that allows to do so.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-30 13:21:28 +02:00
Ayala Beker a442b761b2 cfg80211: add add_nan_func / del_nan_func
A NAN function can be either publish, subscribe or follow
up. Make all the necessary verifications and just pass the
request to the driver.
Allow the user space application that starts NAN to
forbid any other socket to add or remove functions.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-30 13:21:23 +02:00
Ayala Beker cb3b7d8765 cfg80211: add start / stop NAN commands
This allows user space to start/stop NAN interface.
A NAN interface is like P2P device in a few aspects: it
doesn't have a netdev associated to it.
Add the new interface type and prevent operations that
can't be executed on NAN interface like scan.

Define several attributes that may be configured by user space
when starting NAN functionality (master preference and dual
band operation)

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-30 13:21:14 +02:00
David Spinadel b8676221f0 cfg80211: Add support for static WEP in the driver
Add support for drivers that implement static WEP internally, i.e.
expose connection keys to the driver in connect flow and don't
upload the keys after the connection.

Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-30 13:19:10 +02:00
Johannes Berg 8f7d99ba85 cfg80211: wext: really don't store non-WEP keys
Jouni reported that during (repeated) wext_pmf test runs (from the
wpa_supplicant hwsim test suite) the kernel crashes. The reason is
that after the key is set, the wext code still unnecessarily stores
it into the key cache. Despite smatch pointing out an overflow, I
failed to identify the possibility for this in the code and missed
it during development of the earlier patch series.

In order to fix this, simply check that we never store anything but
WEP keys into the cache, adding a comment as to why that's enough.

Also, since the cache is still allocated early even if it won't be
used in many cases, add a comment explaining why - otherwise we'd
have to roll back key settings to the driver in case of allocation
failures, which is far more difficult.

Fixes: 89b706fb28 ("cfg80211: reduce connect key caching struct size")
Reported-by: Jouni Malinen <j@w1.fi>
Bisected-by: Jouni Malinen <j@w1.fi>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-28 23:55:23 +02:00
Johannes Berg 8564e38206 cfg80211: add checks for beacon rate, extend to mesh
The previous commit added support for specifying the beacon rate
for AP mode. Add features checks to this, and extend it to also
support the rate configuration for mesh networks. For IBSS it's
not as simple due to joining etc., so that's not yet supported.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-26 10:23:48 +02:00
Purushottam Kushwaha a7c7fbff6a cfg80211: Add support to configure a beacon data rate
This allows an option to configure a single beacon tx rate for an AP.

Signed-off-by: Purushottam Kushwaha <pkushwah@qti.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-26 10:23:48 +02:00
David S. Miller d6989d4bbe Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-09-23 06:46:57 -04:00
David S. Miller c13ed534b8 This time we have various things - all across the board:
* MU-MIMO sniffer support in mac80211
  * a create_singlethread_workqueue() cleanup
  * interface dump filtering that was documented but not implemented
  * support for the new radiotap timestamp field
  * send delBA in two unexpected conditions (as required by the spec)
  * connect keys cleanups - allow only WEP with index 0-3
  * per-station aggregation limit to work around broken APs
  * debugfs improvement for the integrated codel algorithm
 and various other small improvements and cleanups.
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Merge tag 'mac80211-next-for-davem-2016-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg says:

====================
This time we have various things - all across the board:
 * MU-MIMO sniffer support in mac80211
 * a create_singlethread_workqueue() cleanup
 * interface dump filtering that was documented but not implemented
 * support for the new radiotap timestamp field
 * send delBA in two unexpected conditions (as required by the spec)
 * connect keys cleanups - allow only WEP with index 0-3
 * per-station aggregation limit to work around broken APs
 * debugfs improvement for the integrated codel algorithm
and various other small improvements and cleanups.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-18 22:29:08 -04:00
Luca Coelho fbd05e4a6e cfg80211: add helper to find an IE that matches a byte-array
There are a few places where an IE that matches not only the EID, but
also other bytes inside the element, needs to be found.  To simplify
that and reduce the amount of similar code, implement a new helper
function to match the EID and an extra array of bytes.

Additionally, simplify cfg80211_find_vendor_ie() by using the new
match function.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-16 14:49:52 +02:00
Johannes Berg ec53c832ee cfg80211: remove unnecessary pointer-of
For an array, there's no need to use &array, so just use the
plain wiphy->addresses[i].addr here to silence smatch.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-15 16:46:20 +02:00
Johannes Berg 53b18980fd nl80211: always check nla_put* return values
A few instances were found where we didn't check them, add the
missing checks even though they'll probably never trigger as
the message should be large enough here.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-15 16:46:17 +02:00
Johannes Berg 76e1fb4b55 nl80211: always check nla_nest_start() return value
If the message got full during nla_nest_start(), it can return
NULL. None of the cases here seem like that can really happen,
but check the return value nonetheless.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-15 16:46:17 +02:00
Johannes Berg f1c1f17ac5 cfg80211: allow connect keys only with default (TX) key
There's no point in allowing connect keys when one of them
isn't also configured as the TX key, it would just confuse
drivers and probably cause them to pick something for TX.
Disallow this confusing and erroneous configuration.

As wpa_supplicant will always send NL80211_ATTR_KEYS, even
when there are no keys inside, allow that and treat it as
though the attribute isn't present at all.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-15 16:45:41 +02:00
Johannes Berg 89b706fb28 cfg80211: reduce connect key caching struct size
After the previous patches, connect keys can only (correctly)
be used for storing static WEP keys. Therefore, remove all the
data for dealing with key index 4/5 and reduce the size of the
key material to the maximum for WEP keys.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-13 20:20:54 +02:00
Johannes Berg e9c8f8d3a4 cfg80211: validate key index better
Don't accept it if a key_idx < 0 snuck through, reject WEP keys with
key index 4 and 5 (which are used for IGTKs) and don't allow IGTKs
with key indices other than 4 and 5. This makes the key data match
expectations better.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-13 20:20:53 +02:00
Johannes Berg 9381e267b6 cfg80211: wext: only allow WEP keys to be configured before connected
When not connected, anything but WEP keys shouldn't be allowed to be
configured for later - only static WEP keys make sense at this point.
Change wext to reject anything else just like nl80211 does.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-13 20:20:52 +02:00
Johannes Berg 386b1f2738 nl80211: only allow WEP keys during connect command
This was already documented that way in nl80211.h, but the
parsing code still accepted other key types. Change it to
really only accept WEP keys as documented.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-13 20:20:52 +02:00
Johannes Berg 42ee231cd1 nl80211: fix connect keys range check
Only key index 0-3 should be accepted, 4/5 are for IGTKs and
cannot be used as connect keys. Fix the range checking to not
allow such erroneous configurations.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-13 20:20:51 +02:00
Johannes Berg b6b5555bc8 cfg80211: disallow shared key authentication with key index 4
Key index 4 can only be used for an IGTK, so the range checks
for shared key authentication should treat 4 as an error, fix
that in the code.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-13 20:20:51 +02:00
Johannes Berg ad5987b47e nl80211: validate number of probe response CSA counters
Due to an apparent copy/paste bug, the number of counters for the
beacon configuration were checked twice, instead of checking the
number of probe response counters. Fix this to check the number of
probe response counters before parsing those.

Cc: stable@vger.kernel.org
Fixes: 9a774c78e2 ("cfg80211: Support multiple CSA counters")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-13 20:19:27 +02:00
David S. Miller b20b378d49 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
	drivers/net/ethernet/mediatek/mtk_eth_soc.c
	drivers/net/ethernet/qlogic/qed/qed_dcbx.c
	drivers/net/phy/Kconfig

All conflicts were cases of overlapping commits.

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-12 15:52:44 -07:00
Bhaktipriya Shridhar e481901384 cfg80211: Remove deprecated create_singlethread_workqueue
The workqueue "cfg80211_wq" is involved in cleanup, scan and event related
works. It queues multiple work items &rdev->event_work,
&rdev->dfs_update_channels_wk,
&wiphy_to_rdev(request->wiphy)->scan_done_wk,
&wiphy_to_rdev(wiphy)->sched_scan_results_wk, which require strict
execution ordering.
Hence, an ordered dedicated workqueue has been used.

Since it's a wireless driver, WQ_MEM_RECLAIM has been set to ensure
forward progress under memory pressure.

Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-12 11:24:48 +02:00
Denis Kenzior b7fb44daca nl80211: Allow GET_INTERFACE dumps to be filtered
This patch allows GET_INTERFACE dumps to be filtered based on
NL80211_ATTR_WIPHY or NL80211_ATTR_WDEV.  The documentation for
GET_INTERFACE mentions that this is possible:
"Request an interface's configuration; either a dump request on
a %NL80211_ATTR_WIPHY or ..."

However, this behavior has not been implemented until now.

Johannes: rewrite most of the patch:
 * use nl80211_dump_wiphy_parse() to also allow passing an interface
   to be able to dump its siblings
 * fix locking (must hold rtnl around using nl80211_fam.attrbuf)
 * make init self-contained instead of relying on other cb->args

Signed-off-by: Denis Kenzior <denkenz@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-09-12 11:24:46 +02:00
David S. Miller 15543692a0 Three little fixes:
* revert a recent wext patch, which Ben Hutchings noticed was
    wrong, and it turns out not to be necessary for any driver
 
  * fix an infinite loop that can occur under certain conditions
    in mac80211's TDLS code (depending on regulatory information)
 
  * add a cfg80211_get_station() static inline when cfg80211 isn't
    built, to allow other modules to not have to depend on it for it
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Merge tag 'mac80211-for-davem-2016-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
Three little fixes:
 * revert a recent wext patch, which Ben Hutchings noticed was
   wrong, and it turns out not to be necessary for any driver

 * fix an infinite loop that can occur under certain conditions
   in mac80211's TDLS code (depending on regulatory information)

 * add a cfg80211_get_station() static inline when cfg80211 isn't
   built, to allow other modules to not have to depend on it for it
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-30 21:34:48 -07:00
David S. Miller 60747ef4d1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Minor overlapping changes for both merge conflicts.

Resolution work done by Stephen Rothwell was used
as a reference.

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-18 01:17:32 -04:00
Linus Torvalds 184ca82348 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Buffers powersave frame test is reversed in cfg80211, fix from Felix
    Fietkau.

 2) Remove bogus WARN_ON in openvswitch, from Jarno Rajahalme.

 3) Fix some tg3 ethtool logic bugs, and one that would cause no
    interrupts to be generated when rx-coalescing is set to 0.  From
    Satish Baddipadige and Siva Reddy Kallam.

 4) QLCNIC mailbox corruption and napi budget handling fix from Manish
    Chopra.

 5) Fix fib_trie logic when walking the trie during /proc/net/route
    output than can access a stale node pointer.  From David Forster.

 6) Several sctp_diag fixes from Phil Sutter.

 7) PAUSE frame handling fixes in mlxsw driver from Ido Schimmel.

 8) Checksum fixup fixes in bpf from Daniel Borkmann.

 9) Memork leaks in nfnetlink, from Liping Zhang.

10) Use after free in rxrpc, from David Howells.

11) Use after free in new skb_array code of macvtap driver, from Jason
    Wang.

12) Calipso resource leak, from Colin Ian King.

13) mediatek bug fixes (missing stats sync init, etc.) from Sean Wang.

14) Fix bpf non-linear packet write helpers, from Daniel Borkmann.

15) Fix lockdep splats in macsec, from Sabrina Dubroca.

16) hv_netvsc bug fixes from Vitaly Kuznetsov, mostly to do with VF
    handling.

17) Various tc-action bug fixes, from CONG Wang.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (116 commits)
  net_sched: allow flushing tc police actions
  net_sched: unify the init logic for act_police
  net_sched: convert tcf_exts from list to pointer array
  net_sched: move tc offload macros to pkt_cls.h
  net_sched: fix a typo in tc_for_each_action()
  net_sched: remove an unnecessary list_del()
  net_sched: remove the leftover cleanup_a()
  mlxsw: spectrum: Allow packets to be trapped from any PG
  mlxsw: spectrum: Unmap 802.1Q FID before destroying it
  mlxsw: spectrum: Add missing rollbacks in error path
  mlxsw: reg: Fix missing op field fill-up
  mlxsw: spectrum: Trap loop-backed packets
  mlxsw: spectrum: Add missing packet traps
  mlxsw: spectrum: Mark port as active before registering it
  mlxsw: spectrum: Create PVID vPort before registering netdevice
  mlxsw: spectrum: Remove redundant errors from the code
  mlxsw: spectrum: Don't return upon error in removal path
  i40e: check for and deal with non-contiguous TCs
  ixgbe: Re-enable ability to toggle VLAN filtering
  ixgbe: Force VLNCTRL.VFE to be set in all VMDq paths
  ...
2016-08-17 17:26:58 -07:00
Johannes Berg ff9a71afc9 nl80211: explicitly check enum nl80211_mesh_power_mode
Different gcc versions appear to be treating enum with different
signedness, causing warnings with the out parameter one way or
the other.

Just use the correct type to avoid all that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-08-11 20:00:37 +02:00
Purushottam Kushwaha 12d20fc918 cfg80211: identically validate beacon interval for AP/MESH/IBSS
Beacon interval interface combinations validation was missing
for MESH/IBSS join, add those.

Johannes: also move the beacon interval check disallowing really
tiny and really big intervals into the common function, which
adds it for AP mode.

Signed-off-by: Purushottam Kushwaha <pkushwah@qti.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-08-11 20:00:36 +02:00
Denis Kenzior 7f8ed01ea5 cfg80211: always notify userspace when wireless netdev is removed
This change alters the semantics of NL80211_CMD_DEL_INTERFACE events
by always sending this event whenever a net_device object associated
with a wdev is destroyed.  Prior to this change, this event was only
emitted as a result of NL80211_CMD_DEL_INTERFACE command sent from
userspace.  This allows userspace to reliably detect when wireless
interfaces have been removed, e.g. due to USB removal events, etc.

For wireless device objects without an associated net_device (e.g.
NL80211_IFTYPE_P2P_DEVICE), the NL80211_CMD_DEL_INTERFACE event is
now generated inside cfg80211_unregister_wdev.

Signed-off-by: Denis Kenzior <denkenz@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-08-11 16:51:42 +02:00
Denis Kenzior 896ff0635a cfg80211: always notify userspace of new wireless netdevs
This change alters the semantics of NL80211_CMD_NEW_INTERFACE events
by always sending this event whenever a new net_device object
associated with a wdev is registered.  Prior to this change, this event
was only sent as a result of NL80211_CMD_NEW_INTERFACE command sent
from userspace.  This allows userspace to reliably detect new wireless
interfaces (e.g. due to hardware hot-plug events, etc).

For wdevs created without an associated net_device object (e.g.
NL80211_IFTYPE_P2P_DEVICE), the NL80211_CMD_NEW_INTERFACE event is
still generated inside the relevant nl80211 command handler.

Signed-off-by: Denis Kenzior <denkenz@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-08-11 16:51:41 +02:00
Johannes Berg 4d0bd46a4d Revert "wext: Fix 32 bit iwpriv compatibility issue with 64 bit Kernel"
This reverts commit 3d5fdff46c.

Ben Hutchings pointed out that the commit isn't safe since it assumes
that the structure used by the driver is iw_point, when in fact there's
no way to know about that.

Fortunately, the only driver in the tree that ever runs this code path
is the wilc1000 staging driver, so it doesn't really matter.

Clearly I should have investigated this better before applying, sorry.

Reported-by: Ben Hutchings <ben@decadent.org.uk>
Cc: stable@vger.kernel.org [though I guess it doesn't matter much]
Fixes: 3d5fdff46c ("wext: Fix 32 bit iwpriv compatibility issue with 64 bit Kernel")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-08-08 08:49:50 +02:00
Masashi Honma 9757235f45 nl80211: correct checks for NL80211_MESHCONF_HT_OPMODE value
Previously, NL80211_MESHCONF_HT_OPMODE validation rejected correct
flag combinations, e.g. IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED |
IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT.

Doing just a range-check allows setting flags that don't exist (0x8)
and invalid flag combinations.

Implements some checks based on IEEE 802.11 2012 8.4.2.59 "HT
Operation element".

Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
[reword commit message, simplify a bit]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-08-05 14:14:54 +02:00
Masahiro Yamada 97f2645f35 tree-wide: replace config_enabled() with IS_ENABLED()
The use of config_enabled() against config options is ambiguous.  In
practical terms, config_enabled() is equivalent to IS_BUILTIN(), but the
author might have used it for the meaning of IS_ENABLED().  Using
IS_ENABLED(), IS_BUILTIN(), IS_MODULE() etc.  makes the intention
clearer.

This commit replaces config_enabled() with IS_ENABLED() where possible.
This commit is only touching bool config options.

I noticed two cases where config_enabled() is used against a tristate
option:

 - config_enabled(CONFIG_HWMON)
  [ drivers/net/wireless/ath/ath10k/thermal.c ]

 - config_enabled(CONFIG_BACKLIGHT_CLASS_DEVICE)
  [ drivers/gpu/drm/gma500/opregion.c ]

I did not touch them because they should be converted to IS_BUILTIN()
in order to keep the logic, but I was not sure it was the authors'
intention.

Link: http://lkml.kernel.org/r/1465215656-20569-1-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Stas Sergeev <stsp@list.ru>
Cc: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: Joshua Kinard <kumba@gentoo.org>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: "Dmitry V. Levin" <ldv@altlinux.org>
Cc: yu-cheng yu <yu-cheng.yu@intel.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Will Drewry <wad@chromium.org>
Cc: Nikolay Martynov <mar.kolya@gmail.com>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Cc: Rafal Milecki <zajec5@gmail.com>
Cc: James Cowgill <James.Cowgill@imgtec.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Alex Smith <alex.smith@imgtec.com>
Cc: Adam Buchbinder <adam.buchbinder@gmail.com>
Cc: Qais Yousef <qais.yousef@imgtec.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Cc: "Luis R. Rodriguez" <mcgrof@do-not-panic.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Roland McGrath <roland@hack.frob.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: Kalle Valo <kvalo@qca.qualcomm.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Tony Wu <tung7970@gmail.com>
Cc: Huaitong Han <huaitong.han@intel.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Juergen Gross <jgross@suse.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andrea Gelmini <andrea.gelmini@gelma.net>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Rabin Vincent <rabin@rab.in>
Cc: "Maciej W. Rozycki" <macro@imgtec.com>
Cc: David Daney <david.daney@cavium.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-04 08:50:07 -04:00
Colin Ian King 680682d4d5 cfg80211: fix missing break in NL8211_CHAN_WIDTH_80P80 case
The switch on chandef->width is missing a break on the
NL8211_CHAN_WIDTH_80P80 case; currently we get a WARN_ON when
center_freq2 is non-zero because of the missing break.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-08-02 09:50:25 +02:00
David S. Miller de0ba9a0d8 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Just several instances of overlapping changes.

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-07-24 00:53:32 -04:00
Masashi Honma 7d27a0ba7a cfg80211: Add mesh peer AID setting API
Previously, mesh power management functionality works only with kernel
MPM. Because user space MPM did not report mesh peer AID to kernel,
the kernel could not identify the bit in TIM element. So this patch
adds mesh peer AID setting API.

Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-07-06 15:04:52 +02:00
Avraham Stern 1d76250bd3 nl80211: support beacon report scanning
Beacon report radio measurement requires reporting observed BSSs
on the channels specified in the beacon request. If the measurement
mode is set to passive or active, it requires actually performing a
scan (passive or active, accordingly), and reporting the time that
the scan was started and the time each beacon/probe was received
(both in terms of TSF of the BSS of the requesting AP). If the
request mode is table, this information is optional.
In addition, the radio measurement request specifies the channel
dwell time for the measurement.

In order to use scan for beacon report when the mode is active or
passive, add a parameter to scan request that specifies the
channel dwell time, and add scan start time and beacon received time
to scan results information.

Supporting beacon report is required for Multi Band Operation (MBO).

Signed-off-by: Assaf Krauss <assaf.krauss@intel.com>
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-07-06 14:51:31 +02:00
Aviya Erenfeld c6e6a0c8be nl80211: Add API to support VHT MU-MIMO air sniffer
add API to support VHT MU-MIMO air sniffer.
in MU-MIMO there are parallel frames on the air while the HW
has only one RX.
add the capability to sniff one of the MU-MIMO parallel frames by
giving the sniffer additional information so it'll know which
of the parallel frames it shall follow.

Add attribute - NL80211_ATTR_MU_MIMO_GROUP_DATA - for getting
a MU-MIMO groupID in order to monitor packets from that group
using VHT MU-MIMO.
And add attribute -NL80211_ATTR_MU_MIMO_FOLLOW_ADDR - for passing
MAC address to monitor mode.
that option will be used by VHT MU-MIMO air sniffer to follow a
station according to it's MAC address using VHT MU-MIMO.

Signed-off-by: Aviya Erenfeld <aviya.erenfeld@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-07-06 14:46:04 +02:00
Gregory Greenman 16a910a672 cfg80211: handle failed skb allocation
Handle the case when dev_alloc_skb returns NULL.

Cc: stable@vger.kernel.org
Fixes: 2b67f944f8 ("cfg80211: reuse existing page fragments in A-MSDU rx")
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2016-07-06 13:52:18 +02:00
Purushottam Kushwaha 6e8ef84222 nl80211: Move ACL parsing later to avoid a possible memory leak
No support for pbss results in a memory leak for the acl_data
(if parse_acl_data succeeds). Fix this by moving the ACL parsing later.

Cc: stable@vger.kernel.org
Fixes: 34d505193b ("cfg80211: basic support for PBSS network type")
Signed-off-by: Purushottam Kushwaha <pkushwah@qti.qualcomm.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2016-07-06 13:09:02 +02:00
Arnd Bergmann f151d9db4c nl80211: improve nl80211_parse_mesh_config type checking
When building a kernel with W=1, the nl80211.c file causes a number of
warnings, all about the same problem:

net/wireless/nl80211.c: In function 'nl80211_parse_mesh_config':
net/wireless/nl80211.c:5287:103: error: comparison is always false due to limited range of data type [-Werror=type-limits]
net/wireless/nl80211.c:5290:96: error: comparison is always false due to limited range of data type [-Werror=type-limits]
net/wireless/nl80211.c:5293:124: error: comparison is always false due to limited range of data type [-Werror=type-limits]
net/wireless/nl80211.c:5295:148: error: comparison is always false due to limited range of data type [-Werror=type-limits]
net/wireless/nl80211.c:5298:106: error: comparison is always false due to limited range of data type [-Werror=type-limits]
net/wireless/nl80211.c:5305:116: error: comparison is always false due to limited range of data type [-Werror=type-limits]

The problem is that gcc does not notice that the check is generate
by a macro, so it complains about comparing an unsigned type against 0.

I've tried to come up with a way to rephrase that code in a way that
avoids the warnings and otherwise improves the code as well.

This uses a set of new helper functions that perform the range checking,
and should provide slightly better type safety than the older patch,
at the expense of adding 44 lines to the code. Binary code size is
basically unchanged though (20 bytes added to 126561 bytes .text).

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2016-06-30 12:06:18 +02:00
David S. Miller ee58b57100 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Several cases of overlapping changes, except the packet scheduler
conflicts which deal with the addition of the free list parameter
to qdisc_enqueue().

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-30 05:03:36 -04:00
Felix Fietkau c041778c96 cfg80211: fix proto in ieee80211_data_to_8023 for frames without LLC header
The PDU length of incoming LLC frames is set to the total skb payload size
in __ieee80211_data_to_8023() of net/wireless/util.c which incorrectly
includes the length of the IEEE 802.11 header.

The resulting LLC frame header has a too large PDU length, causing the
llc_fixup_skb() function of net/llc/llc_input.c to reject the incoming
skb, effectively breaking STP.

Solve the problem by properly substracting the IEEE 802.11 frame header size
from the PDU length, allowing the LLC processor to pick up the incoming
control messages.

Special thanks to Gerry Rozema for tracking down the regression and proposing
a suitable patch.

Fixes: 2d1c304cb2 ("cfg80211: add function for 802.3 conversion with separate output buffer")
Cc: stable@vger.kernel.org
Reported-by: Gerry Rozema <gerryr@rozeware.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
2016-06-29 11:50:33 +02:00
David S. Miller d6cf3a85b4 For the next cycle, we have the following:
* the biggest change is Michał's work on integrating FQ/codel
    with the mac80211 internal software queues
  * cfg80211 connect result gets clarified for the
    "no connection at all" case
  * advertisement of per-interface type capabilities, in case
    they differ (which makes a lot of sense for some capabilities)
  * most of the nl80211 & hwsim unprivileged namespace operation
    changes
  * human-readable VHT capabilities in debugfs
  * some other cleanups, like spelling
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Merge tag 'mac80211-next-for-davem-2016-06-09' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg says:

====================
For the next cycle, we have the following:
 * the biggest change is Michał's work on integrating FQ/codel
   with the mac80211 internal software queues
 * cfg80211 connect result gets clarified for the
   "no connection at all" case
 * advertisement of per-interface type capabilities, in case
   they differ (which makes a lot of sense for some capabilities)
 * most of the nl80211 & hwsim unprivileged namespace operation
   changes
 * human-readable VHT capabilities in debugfs
 * some other cleanups, like spelling
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-06-10 23:13:32 -07:00
Johannes Berg 0662799023 nl80211: clarify nl80211_set_reg() success path
Setting rd to NULL to avoid freeing it, just to be able to return
from the function in a single place, doesn't make much sense.

Return the set_regdom() return value directly.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-06-09 10:41:19 +02:00
Kirtika Ruchandani 7a087e7484 nl80211: Fix checkpatch warnings about blank lines
This patch fixes the following checkpatch.pl issues -
- Please don't use multiple blank lines
- Blank lines aren't necessary before a close brace
- Missing a blank line after declarations

Reviewed-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: Kirtika Ruchandani <kirtika.ruchandani@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-06-09 10:07:00 +02:00
Kirtika Ruchandani 56ab364f17 nl80211: Fix spelling
Fix 'implementation' spelling, reported by checkpatch.pl

Signed-off-by: Kirtika Ruchandani <kirtika.ruchandani@gmail.com>
Reviewed-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-06-09 10:06:29 +02:00
Prasun Maiti 3d5fdff46c wext: Fix 32 bit iwpriv compatibility issue with 64 bit Kernel
iwpriv app uses iw_point structure to send data to Kernel. The iw_point
structure holds a pointer. For compatibility Kernel converts the pointer
as required for WEXT IOCTLs (SIOCIWFIRST to SIOCIWLAST). Some drivers
may use iw_handler_def.private_args to populate iwpriv commands instead
of iw_handler_def.private. For those case, the IOCTLs from
SIOCIWFIRSTPRIV to SIOCIWLASTPRIV will follow the path ndo_do_ioctl().
Accordingly when the filled up iw_point structure comes from 32 bit
iwpriv to 64 bit Kernel, Kernel will not convert the pointer and sends
it to driver. So, the driver may get the invalid data.

The pointer conversion for the IOCTLs (SIOCIWFIRSTPRIV to
SIOCIWLASTPRIV), which follow the path ndo_do_ioctl(), is mandatory.
This patch adds pointer conversion from 32 bit to 64 bit and vice versa,
if the ioctl comes from 32 bit iwpriv to 64 bit Kernel.

Cc: stable@vger.kernel.org
Signed-off-by: Prasun Maiti <prasunmaiti87@gmail.com>
Signed-off-by: Ujjal Roy <royujjal@gmail.com>
Tested-by: Dibyajyoti Ghosh <dibyajyotig@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-06-09 09:56:11 +02:00
Johannes Berg 6cbf6236d5 cfg80211: remove get/set antenna and tx power warnings
Since set_tx_power and set_antenna are frequently implemented
without the matching get_tx_power/get_antenna, we shouldn't
have added warnings for those. Remove them.

The remaining ones are correct and need to be implemented
symmetrically for correct operation.

Cc: stable@vger.kernel.org
Fixes: de3bb771f4 ("cfg80211: add more warnings for inconsistent ops")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-06-09 09:44:56 +02:00
Kanchanapally, Vidyullatha 019ae3a918 cfg80211: Advertise extended capabilities per interface type to userspace
The driver extended capabilities may differ for different
interface types which the userspace needs to know (for
example the fine timing measurement initiator and responder
bits might differ for a station and AP). Add a new nl80211
attribute to provide extended capabilities per interface type
to userspace.

Signed-off-by: Vidyullatha Kanchanapally <vkanchan@qti.qualcomm.com>
Reviewed-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-05-31 15:23:13 +02:00
Jouni Malinen bf1ecd2105 cfg80211: Allow cfg80211_connect_result() errors to be distinguished
Previously, the status parameter to cfg80211_connect_result() was
documented as using WLAN_STATUS_UNSPECIFIED_FAILURE (1) when the real
status code for the failure is not known. This value can be used by an
AP (and often is) and as such, user space cannot distinguish between
explicitly rejected authentication/association and not being able to
even try to associate or not receiving a response from the AP.

Add a new inline function, cfg80211_connect_timeout(), to be used when
the driver knows that the connection attempt failed due to a reason
where connection could not be attempt or no response was received from
the AP. The internal functions now allow a negative status value (-1) to
be used as an indication of this special case. This results in the
NL80211_ATTR_TIMED_OUT to be added to the NL80211_CMD_CONNECT event to
allow user space to determine this case was hit. For backwards
compatibility, NL80211_STATUS_CODE with the value
WLAN_STATUS_UNSPECIFIED_FAILURE is still indicated in the event in such
a case.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
[johannes: fix cfg80211_connect_bss() prototype to use int for status,
 add cfg80211_connect_timeout() to docbook, fix docbook]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-05-31 15:22:15 +02:00
Martin Willi 5617c6cd6f nl80211: Allow privileged operations from user namespaces
While a wiphy can be transferred to network namespaces, a process having
CAP_NET_ADMIN in a non-initial user namespace can not administrate such
devices due to the genetlink GENL_ADMIN_PERM restrictions.

For openvswitch having the same issue, a new GENL_UNS_ADMIN_PERM flag has
been introduced, commit 4a92602aa1 ("openvswitch: allow management from
inside user namespaces"). This patch changes all privileged operations
operating on a wiphy, dev or wdev to allow their administration using the
same mechanism. All operations use either NEED_WIPHY, NEED_WDEV or
NEED_NETDEV, which implies a namespace aware lookup of the device. The only
exception is NL80211_CMD_SET_WIPHY, which explicitly uses a namespace aware
phy lookup.

Signed-off-by: Martin Willi <martin@strongswan.org>
[also allow cancel scan, for completeness]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-05-31 11:36:34 +02:00
Joonsoo Kim 6d061f9f61 mm/page_ref: use page_ref helper instead of direct modification of _count
page_reference manipulation functions are introduced to track down
reference count change of the page.  Use it instead of direct
modification of _count.

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Sunil Goutham <sgoutham@cavium.com>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-05-19 19:12:14 -07:00
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 8b9b2f0699 cfg80211: remove erroneous comment
The devlist_mtx mutex was removed about two years ago, in favour of just
using RTNL/RCU protection. Remove the comment still referencing it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-05-12 11:16:24 +02:00
Emmanuel Grumbach 9e9ea43905 cfg80211: allow finding vendor with OUI without specifying the OUI type
This allows finding vendor IE from a specific vendor.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-05-12 11:15:42 +02:00
Johannes Berg 866daf6eaa wext: remove a/b/g/n from SIOCGIWNAME
Since a/b/g/n no longer exist as spec amendements and VHT (ex 802.11ac)
wasn't handled at all, it's better to just remove the amendment strings
to avoid confusion.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-05-02 22:48:09 +02:00
Johannes Berg d686b920ab nl80211: use nla_put_u64_64bit() for the remaining u64 attributes
Nicolas converted most users, but didn't realize some were generated
by macros. Convert those over as well.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-27 11:01:13 +02:00
Kanchanapally, Vidyullatha e705498945 cfg80211: Add option to report the bss entry in connect result
Since cfg80211 maintains separate BSS table entries for APs if the same
BSSID, SSID pair is seen on multiple channels, it is possible that it
can map the current_bss to a BSS entry on the wrong channel. This
current_bss will not get flushed unless disconnected and cfg80211
reports a wrong channel as the associated channel.

Fix this by introducing a new cfg80211_connect_bss() function which is
similar to cfg80211_connect_result(), but it includes an additional
parameter: the bss the STA is connected to. This allows drivers to
provide the exact bss entry that matches the BSS to which the connection
was completed.

Reviewed-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Vidyullatha Kanchanapally <vkanchan@qti.qualcomm.com>
Signed-off-by: Sunil Dutt <usdutt@qti.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-26 09:40:12 +02:00
Mohammed Shafi Shajakhan 739960f128 cfg80211/nl80211: Add support for NL80211_STA_INFO_RX_DURATION
Add support for the a station statistics netlink attribute:
NL80211_STA_INFO_RX_DURATION.

If present, this attribute contains the aggregate PPDU duration (in
microseconds) for all the frames from the peer. This is useful to
help understand the total time spent transmitting to us by all of
the connected peers.

Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qti.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-26 09:40:11 +02:00
Nicolas Dichtel 2dad624e6d wireless: use nla_put_u64_64bit()
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-25 15:09:11 -04:00
David S. Miller 1602f49b58 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts were two cases of simple overlapping changes,
nothing serious.

In the UDP case, we need to add a hlist_add_tail_rcu()
to linux/rculist.h, because we've moved UDP socket handling
away from using nulls lists.

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-23 18:51:33 -04:00
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
Dmitry Ivanov 8f815cdde3 nl80211: check netlink protocol in socket release notification
A non-privileged user can create a netlink socket with the same port_id as
used by an existing open nl80211 netlink socket (e.g. as used by a hostapd
process) with a different protocol number.

Closing this socket will then lead to the notification going to nl80211's
socket release notification handler, and possibly cause an action such as
removing a virtual interface.

Fix this issue by checking that the netlink protocol is NETLINK_GENERIC.
Since generic netlink has no notifier chain of its own, we can't fix the
problem more generically.

Fixes: 026331c4d9 ("cfg80211/mac80211: allow registering for and sending action frames")
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Ivanov <dima@ubnt.com>
[rewrite commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-12 15:39:06 +02:00
Jouni Malinen 4ce2bd9c4c cfg80211: Allow reassociation to be requested with internal SME
If the user space issues a NL80211_CMD_CONNECT with
NL80211_ATTR_PREV_BSSID when there is already a connection, allow this
to proceed as a reassociation instead of rejecting the new connect
command with EALREADY.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
[validate prev_bssid]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-06 15:09:28 +02:00
Jouni Malinen ba6fbacf9c cfg80211: Add option to specify previous BSSID for Connect command
This extends NL80211_CMD_CONNECT to allow the NL80211_ATTR_PREV_BSSID
attribute to be used similarly to way this was already allowed with
NL80211_CMD_ASSOCIATE. This allows user space to request reassociation
(instead of association) when already connected to an AP. This provides
an option to reassociate within an ESS without having to disconnect and
associate with the AP.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-06 13:18:21 +02:00
Ayala Beker 17b9424786 cfg80211: allow userspace to specify client P2P PS support
Legacy clients don't support P2P power save mechanisms, and thus
if a P2P GO has a legacy client connected to it, it has to make
some changes in the PS behavior.

To handle this, add an attribute to specify whether a station supports
P2P PS or not. If the attribute was not specified cfg80211 will assume
that station supports it for P2P GO interface, and does NOT support it
for AP interface, matching the current assumptions in the code.

Signed-off-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 21:34:47 +02:00
Arend van Spriel 38de03d2a2 nl80211: add feature for BSS selection support
Introducing a new feature that the driver can use to
indicate the driver/firmware supports configuration of BSS
selection criteria upon CONNECT command. This can be useful
when multiple BSS-es are found belonging to the same ESS,
ie. Infra-BSS with same SSID. The criteria can then be used to
offload selection of a preferred BSS.

Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Lei Zhang <leizh@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
[move wiphy support check into parse_bss_select()]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:56:34 +02:00
Jouni Malinen 818965d391 cfg80211: Allow a scan request for a specific BSSID
This allows scans for a specific BSSID to be optimized by the user space
application by requesting the driver to set the Probe Request frame
BSSID field (Address 3) to the specified BSSID instead of the wildcard
BSSID. This prevents other APs from replying which reduces airtime need
and latency in getting the response from the target AP through.

This is an optimization and as such, it is acceptable for some of the
drivers not to support the mechanism. If not supported, the wildcard
BSSID will be used and more responses may be received.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:56:28 +02:00
Johannes Berg 98bd147d79 wext: unregister_pernet_subsys() on notifier registration failure
If register_netdevice_notifier() fails (which in practice it can't
right now), we should call unregister_pernet_subsys(). Do that.

Reported-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-04-05 10:48:44 +02:00
Linus Torvalds 1200b6809d Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
 "Highlights:

   1) Support more Realtek wireless chips, from Jes Sorenson.

   2) New BPF types for per-cpu hash and arrap maps, from Alexei
      Starovoitov.

   3) Make several TCP sysctls per-namespace, from Nikolay Borisov.

   4) Allow the use of SO_REUSEPORT in order to do per-thread processing
   of incoming TCP/UDP connections.  The muxing can be done using a
   BPF program which hashes the incoming packet.  From Craig Gallek.

   5) Add a multiplexer for TCP streams, to provide a messaged based
      interface.  BPF programs can be used to determine the message
      boundaries.  From Tom Herbert.

   6) Add 802.1AE MACSEC support, from Sabrina Dubroca.

   7) Avoid factorial complexity when taking down an inetdev interface
      with lots of configured addresses.  We were doing things like
      traversing the entire address less for each address removed, and
      flushing the entire netfilter conntrack table for every address as
      well.

   8) Add and use SKB bulk free infrastructure, from Jesper Brouer.

   9) Allow offloading u32 classifiers to hardware, and implement for
      ixgbe, from John Fastabend.

  10) Allow configuring IRQ coalescing parameters on a per-queue basis,
      from Kan Liang.

  11) Extend ethtool so that larger link mode masks can be supported.
      From David Decotigny.

  12) Introduce devlink, which can be used to configure port link types
      (ethernet vs Infiniband, etc.), port splitting, and switch device
      level attributes as a whole.  From Jiri Pirko.

  13) Hardware offload support for flower classifiers, from Amir Vadai.

  14) Add "Local Checksum Offload".  Basically, for a tunneled packet
      the checksum of the outer header is 'constant' (because with the
      checksum field filled into the inner protocol header, the payload
      of the outer frame checksums to 'zero'), and we can take advantage
      of that in various ways.  From Edward Cree"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1548 commits)
  bonding: fix bond_get_stats()
  net: bcmgenet: fix dma api length mismatch
  net/mlx4_core: Fix backward compatibility on VFs
  phy: mdio-thunder: Fix some Kconfig typos
  lan78xx: add ndo_get_stats64
  lan78xx: handle statistics counter rollover
  RDS: TCP: Remove unused constant
  RDS: TCP: Add sysctl tunables for sndbuf/rcvbuf on rds-tcp socket
  net: smc911x: convert pxa dma to dmaengine
  team: remove duplicate set of flag IFF_MULTICAST
  bonding: remove duplicate set of flag IFF_MULTICAST
  net: fix a comment typo
  ethernet: micrel: fix some error codes
  ip_tunnels, bpf: define IP_TUNNEL_OPTS_MAX and use it
  bpf, dst: add and use dst_tclassid helper
  bpf: make skb->tc_classid also readable
  net: mvneta: bm: clarify dependencies
  cls_bpf: reset class and reuse major in da
  ldmvsw: Checkpatch sunvnet.c and sunvnet_common.c
  ldmvsw: Add ldmvsw.c driver code
  ...
2016-03-19 10:05:34 -07:00
Linus Torvalds 70477371dc Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto update from Herbert Xu:
 "Here is the crypto update for 4.6:

  API:
   - Convert remaining crypto_hash users to shash or ahash, also convert
     blkcipher/ablkcipher users to skcipher.
   - Remove crypto_hash interface.
   - Remove crypto_pcomp interface.
   - Add crypto engine for async cipher drivers.
   - Add akcipher documentation.
   - Add skcipher documentation.

  Algorithms:
   - Rename crypto/crc32 to avoid name clash with lib/crc32.
   - Fix bug in keywrap where we zero the wrong pointer.

  Drivers:
   - Support T5/M5, T7/M7 SPARC CPUs in n2 hwrng driver.
   - Add PIC32 hwrng driver.
   - Support BCM6368 in bcm63xx hwrng driver.
   - Pack structs for 32-bit compat users in qat.
   - Use crypto engine in omap-aes.
   - Add support for sama5d2x SoCs in atmel-sha.
   - Make atmel-sha available again.
   - Make sahara hashing available again.
   - Make ccp hashing available again.
   - Make sha1-mb available again.
   - Add support for multiple devices in ccp.
   - Improve DMA performance in caam.
   - Add hashing support to rockchip"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (116 commits)
  crypto: qat - remove redundant arbiter configuration
  crypto: ux500 - fix checks of error code returned by devm_ioremap_resource()
  crypto: atmel - fix checks of error code returned by devm_ioremap_resource()
  crypto: qat - Change the definition of icp_qat_uof_regtype
  hwrng: exynos - use __maybe_unused to hide pm functions
  crypto: ccp - Add abstraction for device-specific calls
  crypto: ccp - CCP versioning support
  crypto: ccp - Support for multiple CCPs
  crypto: ccp - Remove check for x86 family and model
  crypto: ccp - memset request context to zero during import
  lib/mpi: use "static inline" instead of "extern inline"
  lib/mpi: avoid assembler warning
  hwrng: bcm63xx - fix non device tree compatibility
  crypto: testmgr - allow rfc3686 aes-ctr variants in fips mode.
  crypto: qat - The AE id should be less than the maximal AE number
  lib/mpi: Endianness fix
  crypto: rockchip - add hash support for crypto engine in rk3288
  crypto: xts - fix compile errors
  crypto: doc - add skcipher API documentation
  crypto: doc - update AEAD AD handling
  ...
2016-03-17 11:22:54 -07:00
David S. Miller 810813c47a Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Several cases of overlapping changes, as well as one instance
(vxlan) of a bug fix in 'net' overlapping with code movement
in 'net-next'.

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-08 12:34:12 -05:00
Zhang Shengju 3ef523aeee wireless: use reset to set mac header
Since offset is zero, it's not necessary to use set function. Reset
function is straightforward, and will remove the unnecessary add
operation in set function.

Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-04 22:45:13 -05:00
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
Lorenzo Bianconi 7837a77782 cfg80211: add radiotap VHT info to rtap_namespace_sizes
Add IEEE80211_RADIOTAP_VHT entry to rtap_namespace_sizes array in order to
define alignment and size of VHT info in tx radiotap

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:04:41 +01:00
Beni Lev 0c9ca11b1a cfg80211: Add global RRM capability
Today, the supplicant will add the RRM capabilities
Information Element in the association request only if
Quiet period is supported (NL80211_FEATURE_QUIET).

Quiet is one of many RRM features, and there are other RRM
features that are not related to Quiet (e.g. neighbor
report). Therefore, requiring Quiet to enable RRM is too
restrictive.
Some of the features, like neighbor report, can be
supported by user space without any help from the kernel.
Hence adding the RRM capabilities IE to association request
should be the sole user space's decision.
Removing the RRM dependency on Quiet in the driver solves
this problem, but using an old driver with a user space
tool that would not require Quiet feature would be
problematic: the user space would add NL80211_ATTR_USE_RRM
in the association request even if the kernel doesn't
advertize NL80211_FEATURE_QUIET and the association would
be denied by the kernel.

This solution adds a global RRM capability, that tells user
space that it can request RRM capabilities IE publishment
without any specific feature support in the kernel.

Signed-off-by: Beni Lev <beni.lev@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:04:41 +01:00
Felix Fietkau 2b67f944f8 cfg80211: reuse existing page fragments in A-MSDU rx
This massively reduces data copying and thus improves rx performance

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:04:37 +01:00
Felix Fietkau 2bf0ccc709 cfg80211: fix faulty variable initialization in ieee80211_amsdu_to_8023s
reuse_skb is set to true if the code decides to use the last segment.
Fixes a memory leak

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:04:37 +01:00
Lior David 34d505193b cfg80211: basic support for PBSS network type
PBSS (Personal Basic Service Set) is a new BSS type for DMG
networks. It is similar to infrastructure BSS, having an AP-like
entity called PCP (PBSS Control Point), but it has few differences.
PBSS support is mandatory for 11ad devices.

Add support for PBSS by introducing a new PBSS flag attribute.
The PBSS flag is used in the START_AP command to request starting
a PCP instead of an AP, and in the CONNECT command to request
connecting to a PCP instead of an AP.

Signed-off-by: Lior David <liord@codeaurora.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:04:34 +01:00
Felix Fietkau 230fd28a91 cfg80211: add support for non-linear skbs in ieee80211_amsdu_to_8023s
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:04:34 +01:00
Felix Fietkau 2d1c304cb2 cfg80211: add function for 802.3 conversion with separate output buffer
Use skb_copy_bits in preparation for allowing fragmented skbs

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:04:33 +01:00
Felix Fietkau 88665f5a79 mac80211: move A-MSDU skb_linearize call to ieee80211_amsdu_to_8023s
Prepararation for zero-copy A-MSDU support with page fragment SKBs

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:04:33 +01:00
Ola Olsson 573a2b51ac cfg80211: Fix some linguistics in Kconfig
Signed-off-by: Ola Olsson <ola.olsson@sonymobile.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:04:23 +01:00
Ola Olsson de3bb771f4 cfg80211: add more warnings for inconsistent ops
Print a warning whenever an expected callback function
lacks implementation.

Signed-off-by: Ola Olsson <ola.olsson@sonymobile.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-24 09:04:20 +01:00
Arend van Spriel b86071528f cfg80211: stop critical protocol session upon disconnect event
When user-space has started a critical protocol session and a disconnect
event occurs, the rdev::crit_prot_nlportid remains set. This caused a
subsequent NL80211_CMD_CRIT_PROTO_START to fail (-EBUSY). Fix this by
clearing the rdev attribute and call .crit_proto_stop() callback upon
disconnect event.

Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-23 10:41:24 +01:00
Ola Olsson 5e950a78bf nl80211: Zero out the connection keys memory when freeing them.
The connection keys are zeroed out in all other cases except this
one. Let's fix the last one as well.

Signed-off-by: Ola Olsson <ola.olsson@sonymobile.com>
Reviewed-by: Julian Calaby <julian.calaby@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-02-23 10:40:36 +01:00
Johannes Berg cb150b9d23 cfg80211/wext: fix message ordering
Since cfg80211 frequently takes actions from its netdev notifier
call, wireless extensions messages could still be ordered badly
since the wext netdev notifier, since wext is built into the
kernel, runs before the cfg80211 netdev notifier. For example,
the following can happen:

5: wlan1: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group default
    link/ether 02:00:00:00:01:00 brd ff:ff:ff:ff:ff:ff
5: wlan1: <BROADCAST,MULTICAST,UP>
    link/ether

when setting the interface down causes the wext message.

To also fix this, export the wireless_nlevent_flush() function
and also call it from the cfg80211 notifier.

Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-01-29 17:13:43 +01:00
Johannes Berg 8bf862739a wext: fix message delay/ordering
Beniamino reported that he was getting an RTM_NEWLINK message for a
given interface, after the RTM_DELLINK for it. It turns out that the
message is a wireless extensions message, which was sent because the
interface had been connected and disconnection while it was deleted
caused a wext message.

For its netlink messages, wext uses RTM_NEWLINK, but the message is
without all the regular rtnetlink attributes, so "ip monitor link"
prints just rudimentary information:

5: wlan1: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group default
    link/ether 02:00:00:00:01:00 brd ff:ff:ff:ff:ff:ff
Deleted 5: wlan1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default
    link/ether 02:00:00:00:01:00 brd ff:ff:ff:ff:ff:ff
5: wlan1: <BROADCAST,MULTICAST,UP>
    link/ether
(from my hwsim reproduction)

This can cause userspace to get confused since it doesn't expect an
RTM_NEWLINK message after RTM_DELLINK.

The reason for this is that wext schedules a worker to send out the
messages, and the scheduling delay can cause the messages to get out
to userspace in different order.

To fix this, have wext register a netdevice notifier and flush out
any pending messages when netdevice state changes. This fixes any
ordering whenever the original message wasn't sent by a notifier
itself.

Cc: stable@vger.kernel.org
Reported-by: Beniamino Galvani <bgalvani@redhat.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-01-29 17:13:39 +01:00
Herbert Xu 608fb34cff lib80211: Use skcipher and ahash
This patch replaces uses of blkcipher with skcipher and the long
obsolete hash interface with ahash.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-01-27 20:36:03 +08:00
Geliang Tang a85a7e28f4 cfg80211/mac80211: use to_delayed_work
Use to_delayed_work() instead of open-coding it.

Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-01-14 11:13:15 +01:00
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 707554b4d1 nl80211: Fix potential memory leak in nl80211_connect
Free cached keys if the last early return path is taken.

Signed-off-by: Ola Olsson <ola.olsson@sonymobile.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-15 13:11:26 +01:00
Ola Olsson e5dbe0701a nl80211: Fix potential memory leak in nl80211_set_wowlan
Compared to cfg80211_rdev_free_wowlan in core.h,
the error goto label lacks the freeing of nd_config.
Fix that.

Signed-off-by: Ola Olsson <ola.olsson@sonymobile.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-15 13:10:05 +01:00
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
Johannes Berg bda95eb1d1 cfg80211: handle add_station auth/assoc flag quirks
When a new station is added to AP/GO interfaces the default behaviour
is for it to be added authenticated and associated, due to backwards
compatibility. To prevent that, the driver must be able to do that
(setting the NL80211_FEATURE_FULL_AP_CLIENT_STATE feature flag) and
userspace must set the flag mask to auth|assoc and clear the set.

Handle this quirk in the API entirely in nl80211, and always push the
full flags to the drivers. NL80211_FEATURE_FULL_AP_CLIENT_STATE is
still required for userspace to be allowed to set the mask including
those bits, but after checking that add both flags to the mask and
set in case userspace didn't set them otherwise.

This obsoletes the mac80211 code handling this difference, no other
driver is currently using these flags.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-04 14:43:32 +01:00
Ayala Beker a9bc31e418 cfg80211: use NL80211_ATTR_STA_AID in nl82011_set_station
Fix nl80211_set_station() to use the value of NL80211_ATTR_STA_AID
attribute instead of NL80211_ATTR_PEER_AID attribute.

Signed-off-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-04 14:43:32 +01:00
Vidyullatha Kanchanapally 91d3ab4673 cfg80211: Add support for aborting an ongoing scan
Implement new functionality for aborting an ongoing scan.

Add NL80211_CMD_ABORT_SCAN to the nl80211 interface. After
aborting the scan, driver shall provide the scan status by
calling cfg80211_scan_done().

Reviewed-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Vidyullatha Kanchanapally <vkanchan@qti.qualcomm.com>
Signed-off-by: Sunil Dutt <usdutt@qti.qualcomm.com>
[change command to take wdev instead of netdev so that it
 can be used on p2p-device scans]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-04 14:43:32 +01:00
Michal Sojka c781944b71 cfg80211: Remove unused cfg80211_can_use_iftype_chan()
Last caller of this function was removed in 3.17 in commit
97dc94f1d9.

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
Ola Olsson 1b9df2d20e cfg80211: ocb: Fix null pointer deref if join_ocb is unimplemented
Signed-off-by: Ola Olsson <ola.olsson@sonymobile.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-04 14:43:32 +01:00
Johannes Berg 996bf99c71 lib80211: ratelimit key index mismatch
This indicates a driver key selection issue, but even then there's
no point in printing it all the time, so ratelimit it. Also remove
the priv pointer from it -- people debugging will only have a single
device anyway and it's useless as anything but a cookie.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-04 14:43:32 +01:00
Johannes Berg 0483eeac59 cfg80211: replace ieee80211_ie_split() with an inline
The function is a very simple wrapper around another one,
just adds a few default parameters, so replace it with a
static inline instead of using EXPORT_SYMBOL, reducing
the module size slightly.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-04 14:43:32 +01:00
Johannes Berg 6e045905d1 cfg80211: add complete data to station add/change tracing
Complete the tracepoint with the missing data - it's not printed
by default (a lot of it is dynamic arrays) but will be recorded
and be available during post-processing.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-04 14:43:32 +01:00
Ilan Peer a1056b1baa cfg80211: Add missing tracing to cfg80211
Add missing tracing for:

1. start_radar_detection()
2. set_mcast_rates()
3. set_coalesce()

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-12-04 14:43:32 +01:00
Ayala Beker e420842724 cfg80211: allow AID/listen interval changes for unassociated station
Currently, cfg80211 rejects updates of AID and listen interval parameters
for existing entries. This information is known only at association stage
and as a result it's impossible to update entries that were added
unassociated.
Fix this by allowing updates of these properies for stations that the
driver (or mac80211) assigned unassociated state.

This then fixes mac80211's use of NL80211_FEATURE_FULL_AP_CLIENT_STATE.

Signed-off-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-11-03 11:20:29 +01:00
Ola Olsson 4baf6bea37 nl80211: Fix potential memory leak from parse_acl_data
If parse_acl_data succeeds but the subsequent parsing of smps
attributes fails, there will be a memory leak due to early returns.
Fix that by moving the ACL parsing later.

Cc: stable@vger.kernel.org
Fixes: 18998c381b ("cfg80211: allow requesting SMPS mode on ap start")
Signed-off-by: Ola Olsson <ola.olsson@sonymobile.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2015-11-03 10:40:58 +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