Commit Graph

3140 Commits

Author SHA1 Message Date
Johannes Berg
a096a8602f wifi: cfg80211: move link reconfig parameters into a struct
Add a new struct cfg80211_ml_reconf_req to collect the link
reconfiguration parameters.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250308225541.0cf299c1fdd0.Id1a3b1092dc52d0d3731a8798522fdf2e052bf0b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-03-11 10:51:58 +01:00
Miri Korenblit
72d520476a wifi: cfg80211: cancel wiphy_work before freeing wiphy
A wiphy_work can be queued from the moment the wiphy is allocated and
initialized (i.e. wiphy_new_nm). When a wiphy_work is queued, the
rdev::wiphy_work is getting queued.

If wiphy_free is called before the rdev::wiphy_work had a chance to run,
the wiphy memory will be freed, and then when it eventally gets to run
it'll use invalid memory.

Fix this by canceling the work before freeing the wiphy.

Fixes: a3ee4dc84c ("wifi: cfg80211: add a work abstraction with special semantics")
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Link: https://patch.msgid.link/20250306123626.efd1d19f6e07.I48229f96f4067ef73f5b87302335e2fd750136c9@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-03-07 09:57:39 +01:00
Johannes Berg
2e85829ac7 wifi: nl80211: fix assoc link handling
The refactoring of the assoc link handling in order to
support multi-link reconfiguration broke the setting
of the assoc link ID, and thus resulted in the wrong
BSS "use_for" value being selected. Fix that for both
association and ML reconfiguration.

Fixes: 720fa448f5 ("wifi: nl80211: Split the links handling of an association request")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250306123626.7b233d769c32.I62fd04a8667dd55cedb9a1c0414cc92dd098da75@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-03-07 09:57:39 +01:00
Jakub Kicinski
2525e16a2b Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.14-rc6).

Conflicts:

net/ethtool/cabletest.c
  2bcf4772e4 ("net: ethtool: try to protect all callback with netdev instance lock")
  637399bf7e ("net: ethtool: netlink: Allow NULL nlattrs when getting a phy_device")

No Adjacent changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-03-06 13:03:35 -08:00
Jakub Kicinski
71f8992e34 First 6.15 material:
* cfg80211/mac80211
    - remove cooked monitor support
    - strict mode for better AP testing
    - basic EPCS support
    - OMI RX bandwidth reduction support
  * rtw88
    - preparation for RTL8814AU support
  * rtw89
    - use wiphy_lock/wiphy_work
    - preparations for MLO
    - BT-Coex improvements
    - regulatory support in firmware files
  * iwlwifi
    - preparations for the new iwlmld sub-driver
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Merge tag 'wireless-next-2025-03-04-v2' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next

Johannes Berg says:

====================
First 6.15 material:
 * cfg80211/mac80211
   - remove cooked monitor support
   - strict mode for better AP testing
   - basic EPCS support
   - OMI RX bandwidth reduction support
 * rtw88
   - preparation for RTL8814AU support
 * rtw89
   - use wiphy_lock/wiphy_work
   - preparations for MLO
   - BT-Coex improvements
   - regulatory support in firmware files
 * iwlwifi
   - preparations for the new iwlmld sub-driver

* tag 'wireless-next-2025-03-04-v2' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (128 commits)
  wifi: iwlwifi: remove mld/roc.c
  wifi: mac80211: refactor populating mesh related fields in sinfo
  wifi: cfg80211: reorg sinfo structure elements for mesh
  wifi: iwlwifi: Fix spelling mistake "Increate" -> "Increase"
  wifi: iwlwifi: add Debug Host Command APIs
  wifi: iwlwifi: add IWL_MAX_NUM_IGTKS macro
  wifi: iwlwifi: add OMI bandwidth reduction APIs
  wifi: iwlwifi: remove mvm prefix from iwl_mvm_d3_end_notif
  wifi: iwlwifi: remember if the UATS table was read successfully
  wifi: iwlwifi: export iwl_get_lari_config_bitmap
  wifi: iwlwifi: add support for external 32 KHz clock
  wifi: iwlwifi: mld: add a debug level for EHT prints
  wifi: iwlwifi: mld: add a debug level for PTP prints
  wifi: iwlwifi: remove mvm prefix from iwl_mvm_esr_mode_notif
  wifi: iwlwifi: use 0xff instead of 0xffffffff for invalid
  wifi: iwlwifi: location api cleanup
  wifi: cfg80211: expose update timestamp to drivers
  wifi: mac80211: add ieee80211_iter_chan_contexts_mtx
  wifi: mac80211: fix integer overflow in hwmp_route_info_get()
  wifi: mac80211: Fix possible integer promotion issue
  ...
====================

Link: https://patch.msgid.link/20250304125605.127914-3-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-03-04 08:50:42 -08:00
Jakub Kicinski
3c6a041b31 bugfixes for 6.14:
* regressions from this cycle:
    - mac80211: fix sparse warning for monitor
    - nl80211: disable multi-link reconfiguration (needs fixing)
  * older issues:
    - cfg80211: reject badly combined cooked monitor,
                fix regulatory hint validity checks
    - mac80211: handle TXQ flush w/o driver per-sta flush,
                fix debugfs for monitor, fix element inheritance
    - iwlwifi: fix rfkill, dead firmware handling, rate API
               version, free A-MSDU handling, avoid large
               allocations, fix string format
    - brcmfmac: fix power handling on some boards
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Merge tag 'wireless-2025-03-04' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless

Johannes Berg says:

====================
bugfixes for 6.14:

 * regressions from this cycle:
   - mac80211: fix sparse warning for monitor
   - nl80211: disable multi-link reconfiguration (needs fixing)
 * older issues:
   - cfg80211: reject badly combined cooked monitor,
               fix regulatory hint validity checks
   - mac80211: handle TXQ flush w/o driver per-sta flush,
               fix debugfs for monitor, fix element inheritance
   - iwlwifi: fix rfkill, dead firmware handling, rate API
              version, free A-MSDU handling, avoid large
              allocations, fix string format
   - brcmfmac: fix power handling on some boards

* tag 'wireless-2025-03-04' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless:
  wifi: nl80211: disable multi-link reconfiguration
  wifi: cfg80211: regulatory: improve invalid hints checking
  wifi: brcmfmac: keep power during suspend if board requires it
  wifi: mac80211: Fix sparse warning for monitor_sdata
  wifi: mac80211: fix vendor-specific inheritance
  wifi: mac80211: fix MLE non-inheritance parsing
  wifi: iwlwifi: Fix A-MSDU TSO preparation
  wifi: iwlwifi: Free pages allocated when failing to build A-MSDU
  wifi: iwlwifi: limit printed string from FW file
  wifi: iwlwifi: mvm: use the right version of the rate API
  wifi: iwlwifi: mvm: don't try to talk to a dead firmware
  wifi: iwlwifi: mvm: don't dump the firmware state upon RFKILL while suspend
  wifi: iwlwifi: mvm: clean up ROC on failure
  wifi: iwlwifi: fw: avoid using an uninitialized variable
  wifi: iwlwifi: fw: allocate chained SG tables for dump
  wifi: mac80211: remove debugfs dir for virtual monitor
  wifi: mac80211: Cleanup sta TXQs on flush
  wifi: nl80211: reject cooked mode if it is set along with other flags
====================

Link: https://patch.msgid.link/20250304124435.126272-3-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-03-04 08:48:34 -08:00
Johannes Berg
1f860eb4cd wifi: nl80211: disable multi-link reconfiguration
Both the APIs in cfg80211 and the implementation in mac80211
aren't really ready yet, we have a large number of fixes. In
addition, it's not possible right now to discover support for
this feature from userspace. Disable it for now, there's no
rush.

Link: https://patch.msgid.link/20250303110538.fbeef42a5687.Iab122c22137e5675ebd99f5c031e30c0e5c7af2e@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-03-04 12:50:25 +01:00
Nicolas Dichtel
0c493da863 net: rename netns_local to netns_immutable
The name 'netns_local' is confusing. A following commit will export it via
netlink, so let's use a more explicit name.

Reported-by: Eric Dumazet <edumazet@google.com>
Suggested-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2025-03-04 12:44:48 +01:00
Nikita Zhandarovich
59b348be75 wifi: cfg80211: regulatory: improve invalid hints checking
Syzbot keeps reporting an issue [1] that occurs when erroneous symbols
sent from userspace get through into user_alpha2[] via
regulatory_hint_user() call. Such invalid regulatory hints should be
rejected.

While a sanity check from commit 47caf685a6 ("cfg80211: regulatory:
reject invalid hints") looks to be enough to deter these very cases,
there is a way to get around it due to 2 reasons.

1) The way isalpha() works, symbols other than latin lower and
upper letters may be used to determine a country/domain.
For instance, greek letters will also be considered upper/lower
letters and for such characters isalpha() will return true as well.
However, ISO-3166-1 alpha2 codes should only hold latin
characters.

2) While processing a user regulatory request, between
reg_process_hint_user() and regulatory_hint_user() there happens to
be a call to queue_regulatory_request() which modifies letters in
request->alpha2[] with toupper(). This works fine for latin symbols,
less so for weird letter characters from the second part of _ctype[].

Syzbot triggers a warning in is_user_regdom_saved() by first sending
over an unexpected non-latin letter that gets malformed by toupper()
into a character that ends up failing isalpha() check.

Prevent this by enhancing is_an_alpha2() to ensure that incoming
symbols are latin letters and nothing else.

[1] Syzbot report:
------------[ cut here ]------------
Unexpected user alpha2: A�
WARNING: CPU: 1 PID: 964 at net/wireless/reg.c:442 is_user_regdom_saved net/wireless/reg.c:440 [inline]
WARNING: CPU: 1 PID: 964 at net/wireless/reg.c:442 restore_alpha2 net/wireless/reg.c:3424 [inline]
WARNING: CPU: 1 PID: 964 at net/wireless/reg.c:442 restore_regulatory_settings+0x3c0/0x1e50 net/wireless/reg.c:3516
Modules linked in:
CPU: 1 UID: 0 PID: 964 Comm: kworker/1:2 Not tainted 6.12.0-rc5-syzkaller-00044-gc1e939a21eb1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_power_efficient crda_timeout_work
RIP: 0010:is_user_regdom_saved net/wireless/reg.c:440 [inline]
RIP: 0010:restore_alpha2 net/wireless/reg.c:3424 [inline]
RIP: 0010:restore_regulatory_settings+0x3c0/0x1e50 net/wireless/reg.c:3516
...
Call Trace:
 <TASK>
 crda_timeout_work+0x27/0x50 net/wireless/reg.c:542
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Reported-by: syzbot+e10709ac3c44f3d4e800@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=e10709ac3c44f3d4e800
Fixes: 09d989d179 ("cfg80211: add regulatory hint disconnect support")
Cc: stable@kernel.org
Signed-off-by: Nikita Zhandarovich <n.zhandarovich@fintech.ru>
Link: https://patch.msgid.link/20250228134659.1577656-1-n.zhandarovich@fintech.ru
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-03-03 09:46:19 +01:00
Sarika Sharma
23ff5f6f23 wifi: cfg80211: reorg sinfo structure elements for mesh
Currently, as multi-link operation(MLO) is not supported for mesh,
reorganize the sinfo structure for mesh-specific fields and embed
mesh related NL attributes together in organized view.
This will allow for the simplified reorganization of sinfo structure
for link level in a subsequent patch to add support for MLO station
statistics.
No functionality changes added.

Pahole summary before the reorg of sinfo structure:
 - size: 256, cachelines: 4, members: 50
 - sum members: 239, holes: 4, sum holes: 17
 - paddings: 2, sum paddings: 2
 - forced alignments: 1, forced holes: 1, sum forced holes: 1

Pahole summary after the reorg of sinfo structure:
 - size: 248, cachelines: 4, members: 50
 - sum members: 239, holes: 4, sum holes: 9
 - paddings: 2, sum paddings: 2
 - forced alignments: 1, last cacheline: 56 bytes

Signed-off-by: Sarika Sharma <quic_sarishar@quicinc.com>
Link: https://patch.msgid.link/20250213171632.1646538-2-quic_sarishar@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-02-28 14:08:59 +01:00
Benjamin Berg
ceaad3c435 wifi: cfg80211: expose update timestamp to drivers
This information is exposed to userspace but not drivers. Make this
field public so that drivers are also able to access it. The information
is for example useful for link selection to determine whether the BSS
corresponding to an MLO link has been seen in a recent scan.

Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250212082137.b682ee7aebc8.I0f7cca9effa2b1cee79f4f2eb8b549c99b4e0571@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-02-26 15:48:54 +01:00
Easwar Hariharan
7d2497ff7e wifi: cfg80211: convert timeouts to secs_to_jiffies()
Commit b35108a51c ("jiffies: Define secs_to_jiffies()") introduced
secs_to_jiffies().  As the value here is a multiple of 1000, use
secs_to_jiffies() instead of msecs_to_jiffies to avoid the multiplication.

This is converted using scripts/coccinelle/misc/secs_to_jiffies.cocci with
the following Coccinelle rules:

@depends on patch@
expression E;
@@

-msecs_to_jiffies(E * 1000)
+secs_to_jiffies(E)

-msecs_to_jiffies(E * MSEC_PER_SEC)
+secs_to_jiffies(E)

Signed-off-by: Easwar Hariharan <eahariha@linux.microsoft.com>
Reviewed-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
Link: https://patch.msgid.link/20250219203240.141272-1-eahariha@linux.microsoft.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-02-26 15:44:37 +01:00
Vitaliy Shevtsov
49f27f2944 wifi: nl80211: reject cooked mode if it is set along with other flags
It is possible to set both MONITOR_FLAG_COOK_FRAMES and MONITOR_FLAG_ACTIVE
flags simultaneously on the same monitor interface from the userspace. This
causes a sub-interface to be created with no IEEE80211_SDATA_IN_DRIVER bit
set because the monitor interface is in the cooked state and it takes
precedence over all other states. When the interface is then being deleted
the kernel calls WARN_ONCE() from check_sdata_in_driver() because of missing
that bit.

Fix this by rejecting MONITOR_FLAG_COOK_FRAMES if it is set along with
other flags.

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Fixes: 66f7ac50ed ("nl80211: Add monitor interface configuration flags")
Cc: stable@vger.kernel.org
Reported-by: syzbot+2e5c1e55b9e5c28a3da7@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=2e5c1e55b9e5c28a3da7
Signed-off-by: Vitaliy Shevtsov <v.shevtsov@mt-integration.ru>
Link: https://patch.msgid.link/20250131152657.5606-1-v.shevtsov@mt-integration.ru
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-02-11 12:39:49 +01:00
Ilan Peer
31320ccb09 wifi: cfg80211: Fix trace print for removed links
Print the mask of removed links in hexadecimal.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250205110958.1dd2831cab5f.Ib9f5e82286f0352cd057b4bf76737223e9de8274@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-02-11 11:59:05 +01:00
Alexander Wetzel
be22179cfb wifi: nl80211/cfg80211: Stop supporting cooked monitor
Unconditionally start to refuse creating cooked monitor interfaces to
phase them out.

There is no feature flag for drivers to opt-in for cooked monitor and
all known users are using/preferring the modern API since the hostapd
release 1.0 in May 2012.

Signed-off-by: Alexander Wetzel <Alexander@wetzel-home.de>
Link: https://patch.msgid.link/20250204111352.7004-1-Alexander@wetzel-home.de
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-02-11 11:58:17 +01:00
Linus Torvalds
2ab002c755 Driver core and debugfs updates
Here is the big set of driver core and debugfs updates for 6.14-rc1.
 It's coming late in the merge cycle as there are a number of merge
 conflicts with your tree now, and I wanted to make sure they were
 working properly.  To resolve them, look in linux-next, and I will send
 the "fixup" patch as a response to the pull request.
 
 Included in here is a bunch of driver core, PCI, OF, and platform rust
 bindings (all acked by the different subsystem maintainers), hence the
 merge conflict with the rust tree, and some driver core api updates to
 mark things as const, which will also require some fixups due to new
 stuff coming in through other trees in this merge window.
 
 There are also a bunch of debugfs updates from Al, and there is at least
 one user that does have a regression with these, but Al is working on
 tracking down the fix for it.  In my use (and everyone else's linux-next
 use), it does not seem like a big issue at the moment.
 
 Here's a short list of the things in here:
   - driver core bindings for PCI, platform, OF, and some i/o functions.
     We are almost at the "write a real driver in rust" stage now,
     depending on what you want to do.
   - misc device rust bindings and a sample driver to show how to use
     them
   - debugfs cleanups in the fs as well as the users of the fs api for
     places where drivers got it wrong or were unnecessarily doing things
     in complex ways.
   - driver core const work, making more of the api take const * for
     different parameters to make the rust bindings easier overall.
   - other small fixes and updates
 
 All of these have been in linux-next with all of the aforementioned
 merge conflicts, and the one debugfs issue, which looks to be resolved
 "soon".
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core and debugfs updates from Greg KH:
 "Here is the big set of driver core and debugfs updates for 6.14-rc1.

  Included in here is a bunch of driver core, PCI, OF, and platform rust
  bindings (all acked by the different subsystem maintainers), hence the
  merge conflict with the rust tree, and some driver core api updates to
  mark things as const, which will also require some fixups due to new
  stuff coming in through other trees in this merge window.

  There are also a bunch of debugfs updates from Al, and there is at
  least one user that does have a regression with these, but Al is
  working on tracking down the fix for it. In my use (and everyone
  else's linux-next use), it does not seem like a big issue at the
  moment.

  Here's a short list of the things in here:

   - driver core rust bindings for PCI, platform, OF, and some i/o
     functions.

     We are almost at the "write a real driver in rust" stage now,
     depending on what you want to do.

   - misc device rust bindings and a sample driver to show how to use
     them

   - debugfs cleanups in the fs as well as the users of the fs api for
     places where drivers got it wrong or were unnecessarily doing
     things in complex ways.

   - driver core const work, making more of the api take const * for
     different parameters to make the rust bindings easier overall.

   - other small fixes and updates

  All of these have been in linux-next with all of the aforementioned
  merge conflicts, and the one debugfs issue, which looks to be resolved
  "soon""

* tag 'driver-core-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (95 commits)
  rust: device: Use as_char_ptr() to avoid explicit cast
  rust: device: Replace CString with CStr in property_present()
  devcoredump: Constify 'struct bin_attribute'
  devcoredump: Define 'struct bin_attribute' through macro
  rust: device: Add property_present()
  saner replacement for debugfs_rename()
  orangefs-debugfs: don't mess with ->d_name
  octeontx2: don't mess with ->d_parent or ->d_parent->d_name
  arm_scmi: don't mess with ->d_parent->d_name
  slub: don't mess with ->d_name
  sof-client-ipc-flood-test: don't mess with ->d_name
  qat: don't mess with ->d_name
  xhci: don't mess with ->d_iname
  mtu3: don't mess wiht ->d_iname
  greybus/camera - stop messing with ->d_iname
  mediatek: stop messing with ->d_iname
  netdevsim: don't embed file_operations into your structs
  b43legacy: make use of debugfs_get_aux()
  b43: stop embedding struct file_operations into their objects
  carl9170: stop embedding file_operations into their objects
  ...
2025-01-28 12:25:12 -08:00
Linus Torvalds
c159dfbdd4 Mainly individually changelogged singleton patches. The patch series in
this pull are:
 
 - "lib min_heap: Improve min_heap safety, testing, and documentation"
   from Kuan-Wei Chiu provides various tightenings to the min_heap library
   code.
 
 - "xarray: extract __xa_cmpxchg_raw" from Tamir Duberstein preforms some
   cleanup and Rust preparation in the xarray library code.
 
 - "Update reference to include/asm-<arch>" from Geert Uytterhoeven fixes
   pathnames in some code comments.
 
 - "Converge on using secs_to_jiffies()" from Easwar Hariharan uses the
   new secs_to_jiffies() in various places where that is appropriate.
 
 - "ocfs2, dlmfs: convert to the new mount API" from Eric Sandeen
   switches two filesystems to the new mount API.
 
 - "Convert ocfs2 to use folios" from Matthew Wilcox does that.
 
 - "Remove get_task_comm() and print task comm directly" from Yafang Shao
   removes now-unneeded calls to get_task_comm() in various places.
 
 - "squashfs: reduce memory usage and update docs" from Phillip Lougher
   implements some memory savings in squashfs and performs some
   maintainability work.
 
 - "lib: clarify comparison function requirements" from Kuan-Wei Chiu
   tightens the sort code's behaviour and adds some maintenance work.
 
 - "nilfs2: protect busy buffer heads from being force-cleared" from
   Ryusuke Konishi fixes an issues in nlifs when the fs is presented with a
   corrupted image.
 
 - "nilfs2: fix kernel-doc comments for function return values" from
   Ryusuke Konishi fixes some nilfs kerneldoc.
 
 - "nilfs2: fix issues with rename operations" from Ryusuke Konishi
   addresses some nilfs BUG_ONs which syzbot was able to trigger.
 
 - "minmax.h: Cleanups and minor optimisations" from David Laight
   does some maintenance work on the min/max library code.
 
 - "Fixes and cleanups to xarray" from Kemeng Shi does maintenance work
   on the xarray library code.
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Merge tag 'mm-nonmm-stable-2025-01-24-23-16' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:
 "Mainly individually changelogged singleton patches. The patch series
  in this pull are:

   - "lib min_heap: Improve min_heap safety, testing, and documentation"
     from Kuan-Wei Chiu provides various tightenings to the min_heap
     library code

   - "xarray: extract __xa_cmpxchg_raw" from Tamir Duberstein preforms
     some cleanup and Rust preparation in the xarray library code

   - "Update reference to include/asm-<arch>" from Geert Uytterhoeven
     fixes pathnames in some code comments

   - "Converge on using secs_to_jiffies()" from Easwar Hariharan uses
     the new secs_to_jiffies() in various places where that is
     appropriate

   - "ocfs2, dlmfs: convert to the new mount API" from Eric Sandeen
     switches two filesystems to the new mount API

   - "Convert ocfs2 to use folios" from Matthew Wilcox does that

   - "Remove get_task_comm() and print task comm directly" from Yafang
     Shao removes now-unneeded calls to get_task_comm() in various
     places

   - "squashfs: reduce memory usage and update docs" from Phillip
     Lougher implements some memory savings in squashfs and performs
     some maintainability work

   - "lib: clarify comparison function requirements" from Kuan-Wei Chiu
     tightens the sort code's behaviour and adds some maintenance work

   - "nilfs2: protect busy buffer heads from being force-cleared" from
     Ryusuke Konishi fixes an issues in nlifs when the fs is presented
     with a corrupted image

   - "nilfs2: fix kernel-doc comments for function return values" from
     Ryusuke Konishi fixes some nilfs kerneldoc

   - "nilfs2: fix issues with rename operations" from Ryusuke Konishi
     addresses some nilfs BUG_ONs which syzbot was able to trigger

   - "minmax.h: Cleanups and minor optimisations" from David Laight does
     some maintenance work on the min/max library code

   - "Fixes and cleanups to xarray" from Kemeng Shi does maintenance
     work on the xarray library code"

* tag 'mm-nonmm-stable-2025-01-24-23-16' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (131 commits)
  ocfs2: use str_yes_no() and str_no_yes() helper functions
  include/linux/lz4.h: add some missing macros
  Xarray: use xa_mark_t in xas_squash_marks() to keep code consistent
  Xarray: remove repeat check in xas_squash_marks()
  Xarray: distinguish large entries correctly in xas_split_alloc()
  Xarray: move forward index correctly in xas_pause()
  Xarray: do not return sibling entries from xas_find_marked()
  ipc/util.c: complete the kernel-doc function descriptions
  gcov: clang: use correct function param names
  latencytop: use correct kernel-doc format for func params
  minmax.h: remove some #defines that are only expanded once
  minmax.h: simplify the variants of clamp()
  minmax.h: move all the clamp() definitions after the min/max() ones
  minmax.h: use BUILD_BUG_ON_MSG() for the lo < hi test in clamp()
  minmax.h: reduce the #define expansion of min(), max() and clamp()
  minmax.h: update some comments
  minmax.h: add whitespace around operators and after commas
  nilfs2: do not update mtime of renamed directory that is not moved
  nilfs2: handle errors that nilfs_prepare_chunk() may return
  CREDITS: fix spelling mistake
  ...
2025-01-26 17:50:53 -08:00
Dmitry Antipov
1a0d24775c wifi: cfg80211: adjust allocation of colocated AP data
In 'cfg80211_scan_6ghz()', an instances of 'struct cfg80211_colocated_ap'
are allocated as if they would have 'ssid' as trailing VLA member. Since
this is not so, extra IEEE80211_MAX_SSID_LEN bytes are not needed.
Briefly tested with KUnit.

Fixes: c8cb5b854b ("nl80211/cfg80211: support 6 GHz scanning")
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Link: https://patch.msgid.link/20250113155417.552587-1-dmantipov@yandex.ru
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-01-15 14:42:14 +01:00
Al Viro
f7862dfef6 saner replacement for debugfs_rename()
Existing primitive has several problems:
	1) calling conventions are clumsy - it returns a dentry reference
that is either identical to its second argument or is an ERR_PTR(-E...);
in both cases no refcount changes happen.  Inconvenient for users and
bug-prone; it would be better to have it return 0 on success and -E... on
failure.
	2) it allows cross-directory moves; however, no such caller have
ever materialized and considering the way debugfs is used, it's unlikely
to happen in the future.  What's more, any such caller would have fun
issues to deal with wrt interplay with recursive removal.  It also makes
the calling conventions clumsier...
	3) tautological rename fails; the callers have no race-free way
to deal with that.
	4) new name must have been formed by the caller; quite a few
callers have it done by sprintf/kasprintf/etc., ending up with considerable
boilerplate.

Proposed replacement: int debugfs_change_name(dentry, fmt, ...).  All callers
convert to that easily, and it's simpler internally.

IMO debugfs_rename() should go; if we ever get a real-world use case for
cross-directory moves in debugfs, we can always look into the right way
to handle that.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Link: https://lore.kernel.org/r/20250112080705.141166-21-viro@zeniv.linux.org.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-01-15 13:14:37 +01:00
Johannes Berg
bb54c93bd3 wifi: nl80211: simplify nested if checks
In the absence of (an) else clause(s), "if (a) if (b)" is
equivalent to "if (a && b)", so simplify the code a bit.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250102161730.c8bf7338aa64.Ie49dcc1ba44b507d91d5a9d8bd538d7ac2e46c54@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-01-13 15:34:09 +01:00
Ilan Peer
904c277342 wifi: cfg80211: Add support for controlling EPCS
Add support for configuring Emergency Preparedness Communication
Services (EPCS) for station mode.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250102161730.ea54ac94445c.I11d750188bc0871e13e86146a3b5cc048d853e69@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-01-13 15:34:09 +01:00
Ilan Peer
65c1c04179 wifi: cfg80211: Add support for dynamic addition/removal of links
Add support for requesting dynamic addition/removal of links to the
current MLO association.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250102161730.cef23352f2a2.I79c849974c494cb1cbf9e1b22a5d2d37395ff5ac@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-01-13 15:34:08 +01:00
Ilan Peer
720fa448f5 wifi: nl80211: Split the links handling of an association request
And move it to a separate function so it could later be reused for
dynamic addition of links.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250102161730.1e9c1873796a.I27a51c8c1d455f0a6d5b59f93f2c9ac49282febb@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-01-13 15:34:08 +01:00
Nicolas Escande
22159143ff wifi: nl80211: fix nl80211_start_radar_detection return value
Since the wiphy_guard changes, rdev_start_radar_detection's return value
in nl80211_start_radar_detection is ignored and we always returned 0.

Fixes: f42d22d3f7 ("wifi: cfg80211: define and use wiphy guard")
Signed-off-by: Nicolas Escande <nico.escande@gmail.com>
Link: https://patch.msgid.link/20250109161040.325742-1-nico.escande@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-01-13 15:34:08 +01:00
Kavita Kavita
9add053591 wifi: cfg80211: skip regulatory for punctured subchannels
The kernel performs several regulatory checks for AP mode in
nl80211/cfg80211. These checks include radar detection,
verification of whether the sub-channel is disabled, and
an examination to determine if the channel is a DFS channel
(both DFS usable and DFS available). These checks are
performed across a frequency range, examining each sub-channel.

However, these checks are also performed on subchannels that
have been punctured which should not be examined as they are
not in use.

This leads to the issue where the AP stops because one of
the 20 MHz sub-channels is disabled or radar detected on
the channel, even when the sub-channel is punctured.

To address this issue, add a condition check wherever
regulatory checks exist for AP mode in nl80211/cfg80211.
This check identifies punctured channels and, upon finding
them, skips the regulatory checks for those channels.

Co-developed-by: Manaswini Paluri <quic_mpaluri@quicinc.com>
Signed-off-by: Manaswini Paluri <quic_mpaluri@quicinc.com>
Signed-off-by: Kavita Kavita <quic_kkavita@quicinc.com>
Link: https://patch.msgid.link/20250109050409.25351-1-quic_kkavita@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-01-13 15:34:07 +01:00
Kees Cook
3a0168626c wifi: cfg80211: Move cfg80211_scan_req_add_chan() n_channels increment earlier
Since adding __counted_by(n_channels) to struct cfg80211_scan_request,
anything adding to the channels array must increment n_channels first.
Move n_channels increment earlier.

Reported-by: John Rowley <lkml@johnrowley.me>
Closes: https://lore.kernel.org/stable/1815535c709ba9d9.156c6a5c9cdf6e59.b249b6b6a5ee4634@localhost.localdomain/
Fixes: aa4ec06c45 ("wifi: cfg80211: use __counted_by where appropriate")
Signed-off-by: Kees Cook <kees@kernel.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://patch.msgid.link/20241230183610.work.680-kees@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-01-13 15:34:06 +01:00
Benjamin Berg
f6d2e5abf1 wifi: nl80211: permit userspace to pass supported selectors
Currently the SAE_H2E selector already exists, which needs to be
implemented by the SME. As new such selectors might be added in the
future, add a feature to permit userspace to report a selector as
supported.

If not given, the kernel should assume that userspace does support
SAE_H2E.

Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250101070249.fe67b871cc39.Ieb98390328927e998e612345a58b6dbc00b0e3a2@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-01-13 15:26:45 +01:00
Johannes Berg
2bf502251b wifi: cfg80211: check extended MLD capa/ops in assoc
Check that additionally extended MLD capa/ops for the MLD is
consistent, i.e. the same value is reported by all affiliated
APs/links.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250101070249.e29f42c7ae21.Ib2cdce608321ad154e4b13103cc315c3e3cb6b2b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-01-13 15:26:44 +01:00
Johannes Berg
993ace39ef wifi: cfg80211: scan: skip duplicate RNR entries
There really shouldn't be duplicate entries when we give
the list to the driver, and since we already have a list
it's easy to avoid.

While at it, remove the unnecessary allocation there.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Reviewed-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250101070249.b0012c70f503.Id6fcad979434c1437340aa283abae2906345cca1@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-01-13 15:26:44 +01:00
Michael-CY Lee
61dcfa8c2a wifi: cfg80211: copy multi-link element from the multi-link probe request's frame body to the generated elements
According to Draft P802.11be_D7.0 clause 35.3.4.2, if a multi-link
request requests an MLD with which an AP corresponding to the
nontransmitted BSSID, the corresponding multi-link probe response
shall carry a basic multi-mink element of that MLD in the frame body
of the multi-link probe response, whose location is outside of the
Multiple BSSID element carried in the frame.

Therefore additional handing is needed for parsing multi-link probe
response and generating the merged elements so that the MLD in the frame
body can be correctly copied to the generated elements. Otherwise, the
nontransmitted BSS looks like non-MLD.

Signed-off-by: Money Wang <money.wang@mediatek.com>
Signed-off-by: Michael-CY Lee <michael-cy.lee@mediatek.com>
Link: https://patch.msgid.link/20241225073725.847062-1-michael-cy.lee@mediatek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2025-01-13 13:53:53 +01:00
Yafang Shao
b619c7ac21 net: remove get_task_comm() and print task comm directly
Since task->comm is guaranteed to be NUL-terminated, we can print it
directly without the need to copy it into a separate buffer.  This
simplifies the code and avoids unnecessary operations.

Link: https://lkml.kernel.org/r/20241219023452.69907-4-laoar.shao@gmail.com
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: "André Almeida" <andrealmeid@igalia.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Borislav Petkov (AMD) <bp@alien8.de>
Cc: Danilo Krummrich <dakr@redhat.com>
Cc: Darren Hart <dvhart@infradead.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Morris <jmorris@namei.org>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Jiri Slaby <jirislaby@kernel.org>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Kalle Valo <kvalo@kernel.org>
Cc: Karol Herbst <kherbst@redhat.com>
Cc: Kees Cook <kees@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Lyude Paul <lyude@redhat.com>
Cc: Oded Gabbay <ogabbay@kernel.org>
Cc: Paul Moore <paul@paul-moore.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: "Serge E. Hallyn" <serge@hallyn.com>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tvrtko Ursulin <tursulin@ursulin.net>
Cc: Vineet Gupta <vgupta@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-01-12 20:21:16 -08:00
Jakub Kicinski
e8f3323805 wireless-next patches for v6.14
Multi-Link Operation implementation continues, both in stack and in
 drivers. Otherwise it has been relatively quiet.
 
 Major changes:
 
 cfg80211/mac80211
 
 * define wiphy guard
 
 * get TX power per link
 
 * EHT 320 MHz channel support for mesh
 
 ath11k
 
 * QCA6698AQ support
 
 ath9k
 
 * RX inactivity detection
 
 rtl8xxxu
 
 * add more USB device IDs
 
 rtw88
 
 * add more USB device IDs
 
 * enable USB RX aggregation and USB 3 to improve performance
 
 rtw89
 
 * PowerSave flow for Multi-Link Operation
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Merge tag 'wireless-next-2024-12-19' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next

Kalle Valo says:

====================
wireless-next patches for v6.14

Multi-Link Operation implementation continues, both in stack and in
drivers. Otherwise it has been relatively quiet.

Major changes:

cfg80211/mac80211
 - define wiphy guard
 - get TX power per link
 - EHT 320 MHz channel support for mesh

ath11k
 - QCA6698AQ support

ath9k
 - RX inactivity detection

rtl8xxxu
 - add more USB device IDs

rtw88
 - add more USB device IDs
 - enable USB RX aggregation and USB 3 to improve performance

rtw89
 - PowerSave flow for Multi-Link Operation

* tag 'wireless-next-2024-12-19' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (121 commits)
  wifi: wlcore: sysfs: constify 'struct bin_attribute'
  wifi: brcmfmac: clarify unmodifiable headroom log message
  wifi: brcmfmac: add missing header include for brcmf_dbg
  wifi: brcmsmac: add gain range check to wlc_phy_iqcal_gainparams_nphy()
  wifi: qtnfmac: fix spelling error in core.h
  wifi: rtw89: phy: add dummy C2H event handler for report of TAS power
  wifi: rtw89: 8851b: rfk: remove unnecessary assignment of return value of _dpk_dgain_read()
  wifi: rtw89: 8852c: rfk: refine target channel calculation in _rx_dck_channel_calc()
  wifi: rtlwifi: pci: wait for firmware loading before releasing memory
  wifi: rtlwifi: fix memory leaks and invalid access at probe error path
  wifi: rtlwifi: destroy workqueue at rtl_deinit_core
  wifi: rtlwifi: remove unused check_buddy_priv
  wifi: rtw89: 8922a: update format of RFK pre-notify H2C command v2
  wifi: rtw89: regd: update regulatory map to R68-R51
  wifi: rtw89: 8852c: disable ER SU when 4x HE-LTF and 0.8 GI capability differ
  wifi: rtw89: disable firmware training HE GI and LTF
  wifi: rtw89: ps: update data for firmware and settings for hardware before/after PS
  wifi: rtw89: ps: refactor channel info to firmware before entering PS
  wifi: rtw89: ps: refactor PS flow to support MLO
  wifi: mwifiex: decrease timeout waiting for host sleep from 10s to 5s
  ...
====================

Link: https://patch.msgid.link/20241219185709.774EDC4CECE@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-19 18:54:07 -08:00
Jakub Kicinski
d02af27fa2 A small set of fixes:
- avoid CSA warnings during link removal
    (by changing link bitmap after remove)
  - fix # of spatial streams initialisation
  - fix queues getting stuck in some CSA cases
    and resume failures
  - fix interface address when switching monitor mode
  - fix MBSS change flags 32-bit stack corruption
  - more UBSAN __counted_by "fixes" ...
  - fix link ID netlink validation
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Merge tag 'wireless-2024-12-10' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless

Johannes Berg says:

====================
A small set of fixes:
 - avoid CSA warnings during link removal
   (by changing link bitmap after remove)
 - fix # of spatial streams initialisation
 - fix queues getting stuck in some CSA cases
   and resume failures
 - fix interface address when switching monitor mode
 - fix MBSS change flags 32-bit stack corruption
 - more UBSAN __counted_by "fixes" ...
 - fix link ID netlink validation

* tag 'wireless-2024-12-10' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless:
  wifi: cfg80211: sme: init n_channels before channels[] access
  wifi: mac80211: fix station NSS capability initialization order
  wifi: mac80211: fix vif addr when switching from monitor to station
  wifi: mac80211: fix a queue stall in certain cases of CSA
  wifi: mac80211: wake the queues in case of failure in resume
  wifi: cfg80211: clear link ID from bitmap during link delete after clean up
  wifi: mac80211: init cnt before accessing elem in ieee80211_copy_mbssid_beacon
  wifi: mac80211: fix mbss changed flags corruption on 32 bit systems
  wifi: nl80211: fix NL80211_ATTR_MLO_LINK_ID off-by-one
====================

Link: https://patch.msgid.link/20241210130145.28618-3-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-12-10 18:44:25 -08:00
Haoyu Li
f1d3334d60 wifi: cfg80211: sme: init n_channels before channels[] access
With the __counted_by annocation in cfg80211_scan_request struct,
the "n_channels" struct member must be set before accessing the
"channels" array. Failing to do so will trigger a runtime warning
when enabling CONFIG_UBSAN_BOUNDS and CONFIG_FORTIFY_SOURCE.

Fixes: e3eac9f32e ("wifi: cfg80211: Annotate struct cfg80211_scan_request with __counted_by")
Signed-off-by: Haoyu Li <lihaoyu499@gmail.com>
Link: https://patch.msgid.link/20241203152049.348806-1-lihaoyu499@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-12-06 10:45:22 +01:00
Rameshkumar Sundaram
7a53af85d3 wifi: cfg80211: send MLO links tx power info in GET_INTERFACE
Currently, TX power is reported on interface/wdev level as
part of NL80211_CMD_GET_INTERFACE. With MLO, Multiple links
can be part of an interface/wdev and hence its necessary to
report the TX power of each link.

Add support to send tx power for all valid links of an MLD as
part of NL80211_CMD_GET_INTERFACE request.

As far as userspace is concerned, there is no behavioral change
for Non-ML Interfaces. For ML interfaces, userspace should fetch
TX power that is nested inside NL80211_ATTR_MLO_LINKS, similar to
how channel info(NL80211_ATTR_WIPHY_FREQ) is fetched.

Co-developed-by: Aaradhana Sahu <quic_aarasahu@quicinc.com>
Signed-off-by: Aaradhana Sahu <quic_aarasahu@quicinc.com>
Signed-off-by: Rameshkumar Sundaram <quic_ramess@quicinc.com>
Link: https://patch.msgid.link/20241125083217.216095-2-quic_ramess@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-12-04 16:14:46 +01:00
Zichen Xie
13c4f7714c wifi: cfg80211: tests: Fix potential NULL dereference in test_cfg80211_parse_colocated_ap()
kunit_kzalloc() may return NULL, dereferencing it without NULL check may
lead to NULL dereference.
Add a NULL check for ies.

Fixes: 45d43937a4 ("wifi: cfg80211: add a kunit test for 6 GHz colocated AP parsing")
Signed-off-by: Zichen Xie <zichenxie0106@gmail.com>
Link: https://patch.msgid.link/20241115063835.5888-1-zichenxie0106@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-12-04 16:11:11 +01:00
Johannes Berg
f42d22d3f7 wifi: cfg80211: define and use wiphy guard
Define a guard for the wiphy mutex, and use it in
most code in cfg80211, though not all due to some
interaction with RTNL and/or indentation.

Suggested-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Reviewed-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://patch.msgid.link/20241122094225.88765cbaab65.I610c9b14f36902e75e1d13f0db29f8bef2298804@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-12-04 16:10:52 +01:00
Aditya Kumar Singh
b5c32ff6a3 wifi: cfg80211: clear link ID from bitmap during link delete after clean up
Currently, during link deletion, the link ID is first removed from the
valid_links bitmap before performing any clean-up operations. However, some
functions require the link ID to remain in the valid_links bitmap. One
such example is cfg80211_cac_event(). The flow is -

nl80211_remove_link()
    cfg80211_remove_link()
        ieee80211_del_intf_link()
            ieee80211_vif_set_links()
                ieee80211_vif_update_links()
                    ieee80211_link_stop()
                        cfg80211_cac_event()

cfg80211_cac_event() requires link ID to be present but it is cleared
already in cfg80211_remove_link(). Ultimately, WARN_ON() is hit.

Therefore, clear the link ID from the bitmap only after completing the link
clean-up.

Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Link: https://patch.msgid.link/20241121-mlo_dfs_fix-v2-1-92c3bf7ab551@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-12-03 11:28:20 +01:00
Lin Ma
2e3dbf9386 wifi: nl80211: fix NL80211_ATTR_MLO_LINK_ID off-by-one
Since the netlink attribute range validation provides inclusive
checking, the *max* of attribute NL80211_ATTR_MLO_LINK_ID should be
IEEE80211_MLD_MAX_NUM_LINKS - 1 otherwise causing an off-by-one.

One crash stack for demonstration:
==================================================================
BUG: KASAN: wild-memory-access in ieee80211_tx_control_port+0x3b6/0xca0 net/mac80211/tx.c:5939
Read of size 6 at addr 001102080000000c by task fuzzer.386/9508

CPU: 1 PID: 9508 Comm: syz.1.386 Not tainted 6.1.70 #2
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x177/0x231 lib/dump_stack.c:106
 print_report+0xe0/0x750 mm/kasan/report.c:398
 kasan_report+0x139/0x170 mm/kasan/report.c:495
 kasan_check_range+0x287/0x290 mm/kasan/generic.c:189
 memcpy+0x25/0x60 mm/kasan/shadow.c:65
 ieee80211_tx_control_port+0x3b6/0xca0 net/mac80211/tx.c:5939
 rdev_tx_control_port net/wireless/rdev-ops.h:761 [inline]
 nl80211_tx_control_port+0x7b3/0xc40 net/wireless/nl80211.c:15453
 genl_family_rcv_msg_doit+0x22e/0x320 net/netlink/genetlink.c:756
 genl_family_rcv_msg net/netlink/genetlink.c:833 [inline]
 genl_rcv_msg+0x539/0x740 net/netlink/genetlink.c:850
 netlink_rcv_skb+0x1de/0x420 net/netlink/af_netlink.c:2508
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:861
 netlink_unicast_kernel net/netlink/af_netlink.c:1326 [inline]
 netlink_unicast+0x74b/0x8c0 net/netlink/af_netlink.c:1352
 netlink_sendmsg+0x882/0xb90 net/netlink/af_netlink.c:1874
 sock_sendmsg_nosec net/socket.c:716 [inline]
 __sock_sendmsg net/socket.c:728 [inline]
 ____sys_sendmsg+0x5cc/0x8f0 net/socket.c:2499
 ___sys_sendmsg+0x21c/0x290 net/socket.c:2553
 __sys_sendmsg net/socket.c:2582 [inline]
 __do_sys_sendmsg net/socket.c:2591 [inline]
 __se_sys_sendmsg+0x19e/0x270 net/socket.c:2589
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x45/0x90 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Update the policy to ensure correct validation.

Fixes: 7b0a0e3c3a ("wifi: cfg80211: do some rework towards MLO link APIs")
Signed-off-by: Lin Ma <linma@zju.edu.cn>
Suggested-by: Cengiz Can <cengiz.can@canonical.com>
Link: https://patch.msgid.link/20241130170526.96698-1-linma@zju.edu.cn
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-12-03 11:25:41 +01:00
Peter Zijlstra
cdd30ebb1b module: Convert symbol namespace to string literal
Clean up the existing export namespace code along the same lines of
commit 33def8498f ("treewide: Convert macro and uses of __section(foo)
to __section("foo")") and for the same reason, it is not desired for the
namespace argument to be a macro expansion itself.

Scripted using

  git grep -l -e MODULE_IMPORT_NS -e EXPORT_SYMBOL_NS | while read file;
  do
    awk -i inplace '
      /^#define EXPORT_SYMBOL_NS/ {
        gsub(/__stringify\(ns\)/, "ns");
        print;
        next;
      }
      /^#define MODULE_IMPORT_NS/ {
        gsub(/__stringify\(ns\)/, "ns");
        print;
        next;
      }
      /MODULE_IMPORT_NS/ {
        $0 = gensub(/MODULE_IMPORT_NS\(([^)]*)\)/, "MODULE_IMPORT_NS(\"\\1\")", "g");
      }
      /EXPORT_SYMBOL_NS/ {
        if ($0 ~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+),/) {
  	if ($0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/ &&
  	    $0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(\)/ &&
  	    $0 !~ /^my/) {
  	  getline line;
  	  gsub(/[[:space:]]*\\$/, "");
  	  gsub(/[[:space:]]/, "", line);
  	  $0 = $0 " " line;
  	}

  	$0 = gensub(/(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/,
  		    "\\1(\\2, \"\\3\")", "g");
        }
      }
      { print }' $file;
  done

Requested-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://mail.google.com/mail/u/2/#inbox/FMfcgzQXKWgMmjdFwwdsfgxzKpVHWPlc
Acked-by: Greg KH <gregkh@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2024-12-02 11:34:44 -08:00
Jakub Kicinski
5c46638540 wireless-next patches for v6.13
Most likely the last -next pull request for v6.13. Most changes are in
 Realtek and Qualcomm drivers, otherwise not really anything
 noteworthy.
 
 Major changes:
 
 mac80211
 
 * EHT 1024 aggregation size for transmissions
 
 ath12k
 
 * switch to using wiphy_lock() and remove ar->conf_mutex
 
 * firmware coredump collection support
 
 * add debugfs support for a multitude of statistics
 
 ath11k
 
 * dt: document WCN6855 hardware inputs
 
 ath9k
 
 * remove include/linux/ath9k_platform.h
 
 ath5k
 
 * Arcadyan ARV45XX AR2417 & Gigaset SX76[23] AR241[34]A support
 
 rtw88:
 
 * 8821au and 8812au USB adapters support
 
 rtw89
 
 * thermal protection
 
 * firmware secure boot for WiFi 6 chip
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Merge tag 'wireless-next-2024-11-13' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next

Kalle Valo says:

====================
wireless-next patches for v6.13

Most likely the last -next pull request for v6.13. Most changes are in
Realtek and Qualcomm drivers, otherwise not really anything
noteworthy.

Major changes:

mac80211
 * EHT 1024 aggregation size for transmissions

ath12k
 * switch to using wiphy_lock() and remove ar->conf_mutex
 * firmware coredump collection support
 * add debugfs support for a multitude of statistics

ath11k
 * dt: document WCN6855 hardware inputs

ath9k
 * remove include/linux/ath9k_platform.h

ath5k
 * Arcadyan ARV45XX AR2417 & Gigaset SX76[23] AR241[34]A support

rtw88:
 * 8821au and 8812au USB adapters support

rtw89
 * thermal protection
 * firmware secure boot for WiFi 6 chip

* tag 'wireless-next-2024-11-13' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (154 commits)
  Revert "wifi: iwlegacy: do not skip frames with bad FCS"
  wifi: mac80211: pass MBSSID config by reference
  wifi: mac80211: Support EHT 1024 aggregation size in TX
  net: rfkill: gpio: Add check for clk_enable()
  wifi: brcmfmac: Fix oops due to NULL pointer dereference in brcmf_sdiod_sglist_rw()
  wifi: Switch back to struct platform_driver::remove()
  wifi: ipw2x00: libipw_rx_any(): fix bad alignment
  wifi: brcmfmac: release 'root' node in all execution paths
  wifi: iwlwifi: mvm: don't call power_update_mac in fast suspend
  wifi: iwlwifi: s/IWL_MVM_INVALID_STA/IWL_INVALID_STA
  wifi: iwlwifi: bump minimum API version in BZ/SC to 92
  wifi: iwlwifi: move IWL_LMAC_*_INDEX to fw/api/context.h
  wifi: iwlwifi: be less noisy if the NIC is dead in S3
  wifi: iwlwifi: mvm: tell iwlmei when we finished suspending
  wifi: iwlwifi: allow fast resume on ax200
  wifi: iwlwifi: mvm: support new initiator and responder command version
  wifi: iwlwifi: mvm: use wiphy locked debugfs for low-latency
  wifi: iwlwifi: mvm: MLO scan upon channel condition degradation
  wifi: iwlwifi: mvm: support new versions of the wowlan APIs
  wifi: iwlwifi: mvm: allow always calling iwl_mvm_get_bss_vif()
  ...
====================

Link: https://patch.msgid.link/20241113172918.A8A11C4CEC3@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-13 18:35:19 -08:00
Johannes Berg
a885a6b2d3 net: convert to nla_get_*_default()
Most of the original conversion is from the spatch below,
but I edited some and left out other instances that were
either buggy after conversion (where default values don't
fit into the type) or just looked strange.

    @@
    expression attr, def;
    expression val;
    identifier fn =~ "^nla_get_.*";
    fresh identifier dfn = fn ## "_default";
    @@
    (
    -if (attr)
    -  val = fn(attr);
    -else
    -  val = def;
    +val = dfn(attr, def);
    |
    -if (!attr)
    -  val = def;
    -else
    -  val = fn(attr);
    +val = dfn(attr, def);
    |
    -if (!attr)
    -  return def;
    -return fn(attr);
    +return dfn(attr, def);
    |
    -attr ? fn(attr) : def
    +dfn(attr, def)
    |
    -!attr ? def : fn(attr)
    +dfn(attr, def)
    )

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Toke Høiland-Jørgensen <toke@kernel.org>
Link: https://patch.msgid.link/20241108114145.0580b8684e7f.I740beeaa2f70ebfc19bfca1045a24d6151992790@changeid
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11 10:32:06 -08:00
Christophe JAILLET
bb9df91cfe wifi: cfg80211: Fix an error handling path in nl80211_start_ap()
All error handling paths go to "out", except this one. Before the
commit in Fixes, error in the previous code would also end to "out",
freeing the memory.

Move the code up to avoid the leak.

Fixes: 62262dd00c ("wifi: cfg80211: disallow SMPS in AP mode")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://patch.msgid.link/eae54ce066d541914f272b10cab7b263c08eced3.1729956868.git.christophe.jaillet@wanadoo.fr
[move code, update commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-11-07 14:40:44 +01:00
Aleksei Vetrov
9c46a3a5b3 wifi: nl80211: fix bounds checker error in nl80211_parse_sched_scan
The channels array in the cfg80211_scan_request has a __counted_by
attribute attached to it, which points to the n_channels variable. This
attribute is used in bounds checking, and if it is not set before the
array is filled, then the bounds sanitizer will issue a warning or a
kernel panic if CONFIG_UBSAN_TRAP is set.

This patch sets the size of allocated memory as the initial value for
n_channels. It is updated with the actual number of added elements after
the array is filled.

Fixes: aa4ec06c45 ("wifi: cfg80211: use __counted_by where appropriate")
Cc: stable@vger.kernel.org
Signed-off-by: Aleksei Vetrov <vvvvvv@google.com>
Reviewed-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://patch.msgid.link/20241029-nl80211_parse_sched_scan-bounds-checker-fix-v2-1-c804b787341f@google.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-11-07 14:38:33 +01:00
Lingbo Kong
b4ebb58cb9 wifi: cfg80211: Remove the Medium Synchronization Delay validity check
Currently, when the driver attempts to connect to an AP MLD with multiple
APs, the cfg80211_mlme_check_mlo_compat() function requires the Medium
Synchronization Delay values from different APs of the same AP MLD to be
equal, which may result in connection failures.

This is because when the driver receives a multi-link probe response from
an AP MLD with multiple APs, cfg80211 updates the Elements for each AP
based on the multi-link probe response. If the Medium Synchronization Delay
is set in the multi-link probe response, the Elements for each AP belonging
to the same AP MLD will have the Medium Synchronization Delay set
simultaneously. If non-multi-link probe responses are received from
different APs of the same MLD AP, cfg80211 will still update the Elements
based on the non-multi-link probe response. Since the non-multi-link probe
response does not set the Medium Synchronization Delay
(IEEE 802.11be-2024-35.3.4.4), if the Elements from a non-multi-link probe
response overwrite those from a multi-link probe response that has set the
Medium Synchronization Delay, the Medium Synchronization Delay values for
APs belonging to the same AP MLD will not be equal. This discrepancy causes
the cfg80211_mlme_check_mlo_compat() function to fail, leading to
connection failures. Commit ccb964b4ab
("wifi: cfg80211: validate MLO connections better") did not take this into
account.

To address this issue, remove this validity check.

Fixes: ccb964b4ab ("wifi: cfg80211: validate MLO connections better")
Signed-off-by: Lingbo Kong <quic_lingbok@quicinc.com>
Link: https://patch.msgid.link/20241031134223.970-1-quic_lingbok@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-11-07 14:38:18 +01:00
Jakub Kicinski
5b1c965956 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.12-rc6).

Conflicts:

drivers/net/wireless/intel/iwlwifi/mvm/mld-mac80211.c
  cbe84e9ad5 ("wifi: iwlwifi: mvm: really send iwl_txpower_constraints_cmd")
  188a1bf894 ("wifi: mac80211: re-order assigning channel in activate links")
https://lore.kernel.org/all/20241028123621.7bbb131b@canb.auug.org.au/

net/mac80211/cfg.c
  c4382d5ca1 ("wifi: mac80211: update the right link for tx power")
  8dd0498983 ("wifi: mac80211: Fix setting txpower with emulate_chanctx")

drivers/net/ethernet/intel/ice/ice_ptp_hw.h
  6e58c33106 ("ice: fix crash on probe for DPLL enabled E810 LOM")
  e4291b64e1 ("ice: Align E810T GPIO to other products")
  ebb2693f8f ("ice: Read SDP section from NVM for pin definitions")
  ac532f4f42 ("ice: Cleanup unused declarations")
https://lore.kernel.org/all/20241030120524.1ee1af18@canb.auug.org.au/

No adjacent changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-10-31 18:10:07 -07:00
Jakub Kicinski
71e0ad3451 wireless-next patches for v6.13
The first -next "new features" pull request for v6.13. This is a big
 one as we have not been able to send one earlier. We have also some
 patches affecting other subsystems: in staging we deleted the rtl8192e
 driver and in debugfs added a new interface to save struct
 file_operations memory; both were acked by GregKH.
 
 Because of the lib80211/libipw move there were quite a lot of
 conflicts and to solve those we decided to merge net-next into
 wireless-next.
 
 Currently there's one conflict in
 Documentation/networking/net_cachelines/net_device.rst. To fix that
 just remove the iw_public_data line:
 
 https://lore.kernel.org/all/20241011121014.674661a0@canb.auug.org.au/
 
 And when net is merged to net-next there will be another simple
 conflict in in net/mac80211/cfg.c:
 
 https://lore.kernel.org/all/20241024115523.4cd35dde@canb.auug.org.au/
 
 Major changes:
 
 cfg80211/mac80211
 
 * stop exporting wext symbols
 
 * new mac80211 op to indicate that a new interface is to be added
 
 * support radio separation of multi-band devices
 
 Wireless Extensions
 
 * move wext spy implementation to libiw
 
 * remove iw_public_data from struct net_device
 
 brcmfmac
 
 * optional LPO clock support
 
 ipw2x00
 
 * move remaining lib80211 code into libiw
 
 wilc1000
 
 * WILC3000 support
 
 rtw89
 
 * RTL8852BE and RTL8852BE-VT BT-coexistence improvements
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Merge tag 'wireless-next-2024-10-25' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next

Kalle Valo says:

====================
wireless-next patches for v6.13

The first -next "new features" pull request for v6.13. This is a big
one as we have not been able to send one earlier. We have also some
patches affecting other subsystems: in staging we deleted the rtl8192e
driver and in debugfs added a new interface to save struct
file_operations memory; both were acked by GregKH.

Because of the lib80211/libipw move there were quite a lot of
conflicts and to solve those we decided to merge net-next into
wireless-next.

Major changes:

cfg80211/mac80211
 * stop exporting wext symbols
 * new mac80211 op to indicate that a new interface is to be added
 * support radio separation of multi-band devices

Wireless Extensions
 * move wext spy implementation to libiw
 * remove iw_public_data from struct net_device

brcmfmac
 * optional LPO clock support

ipw2x00
 * move remaining lib80211 code into libiw

wilc1000
 * WILC3000 support

rtw89
 * RTL8852BE and RTL8852BE-VT BT-coexistence improvements

* tag 'wireless-next-2024-10-25' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (126 commits)
  mac80211: Remove NOP call to ieee80211_hw_config
  wifi: iwlwifi: work around -Wenum-compare-conditional warning
  wifi: mac80211: re-order assigning channel in activate links
  wifi: mac80211: convert debugfs files to short fops
  debugfs: add small file operations for most files
  wifi: mac80211: remove misleading j_0 construction parts
  wifi: mac80211_hwsim: use hrtimer_active()
  wifi: mac80211: refactor BW limitation check for CSA parsing
  wifi: mac80211: filter on monitor interfaces based on configured channel
  wifi: mac80211: refactor ieee80211_rx_monitor
  wifi: mac80211: add support for the monitor SKIP_TX flag
  wifi: cfg80211: add monitor SKIP_TX flag
  wifi: mac80211: add flag to opt out of virtual monitor support
  wifi: cfg80211: pass net_device to .set_monitor_channel
  wifi: mac80211: remove status->ampdu_delimiter_crc
  wifi: cfg80211: report per wiphy radio antenna mask
  wifi: mac80211: use vif radio mask to limit creating chanctx
  wifi: mac80211: use vif radio mask to limit ibss scan frequencies
  wifi: cfg80211: add option for vif allowed radios
  wifi: iwlwifi: allow IWL_FW_CHECK() with just a string
  ...

====================

Link: https://patch.msgid.link/20241025170705.5F6B2C4CEC3@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-10-29 18:50:58 -07:00
Johannes Berg
d5fee261df wifi: cfg80211: clear wdev->cqm_config pointer on free
When we free wdev->cqm_config when unregistering, we also
need to clear out the pointer since the same wdev/netdev
may get re-registered in another network namespace, then
destroyed later, running this code again, which results in
a double-free.

Reported-by: syzbot+36218cddfd84b5cc263e@syzkaller.appspotmail.com
Fixes: 37c20b2eff ("wifi: cfg80211: fix cqm_config access race")
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20241022161742.7c34b2037726.I121b9cdb7eb180802eafc90b493522950d57ee18@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-10-25 17:53:40 +02:00
David S. Miller
e31a8219fb wireless fixes for v6.12-rc5
The first set of wireless fixes for v6.12. We have been busy and have
 not been able to send this earlier, so there are more fixes than
 usual. The fixes are all over, both in stack and in drivers, but
 nothing special really standing out.
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Merge tag 'wireless-2024-10-21' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless

wireless fixes for v6.12-rc5

The first set of wireless fixes for v6.12. We have been busy and have
not been able to send this earlier, so there are more fixes than
usual. The fixes are all over, both in stack and in drivers, but
nothing special really standing out.
2024-10-25 10:44:41 +01:00
Felix Fietkau
a77e527b47 wifi: cfg80211: add monitor SKIP_TX flag
This can be used to indicate that the user is not interested in receiving
locally sent packets on the monitor interface.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://patch.msgid.link/f0c20f832eadd36c71fba9a2a16ba57d78389b6c.1728462320.git-series.nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-10-23 16:46:06 +02:00
Felix Fietkau
9c4f830927 wifi: cfg80211: pass net_device to .set_monitor_channel
Preparation for allowing multiple monitor interfaces with different channels
on a multi-radio wiphy.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://patch.msgid.link/35fa652dbfebf93343f8b9a08fdef0467a2a02dc.1728462320.git-series.nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-10-23 16:45:35 +02:00
Felix Fietkau
ebda716ea4 wifi: cfg80211: report per wiphy radio antenna mask
With multi-radio devices, each radio typically gets a fixed set of antennas.
In order to be able to disable specific antennas for some radios, user space
needs to know which antenna mask bits are assigned to which radio.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://patch.msgid.link/e0a26afa2c88eaa188ec96ec6d17ecac4e827641.1728462320.git-series.nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-10-23 16:45:03 +02:00
Felix Fietkau
3607798ad9 wifi: cfg80211: add option for vif allowed radios
This allows users to prevent a vif from affecting radios other than the
configured ones. This can be useful in cases where e.g. an AP is running
on one radio, and triggering a scan on another radio should not disturb it.

Changing the allowed radios list for a vif is supported, but only while
it is down.

While it is possible to achieve the same by always explicitly specifying
a frequency list for scan requests and ensuring that the wrong channel/band
is never accidentally set on an unrelated interface, this change makes
multi-radio wiphy setups a lot easier to deal with for CLI users.

By itself, this patch only enforces the radio mask for scanning requests
and remain-on-channel. Follow-up changes build on this to limit configured
frequencies.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://patch.msgid.link/eefcb218780f71a1549875d149f1196486762756.1728462320.git-series.nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-10-23 16:44:10 +02:00
Johannes Berg
62262dd00c wifi: cfg80211: disallow SMPS in AP mode
In practice, userspace hasn't been able to set this for many
years, and mac80211 has already rejected it (which is now no
longer needed), so reject SMPS mode (other than "OFF" to be
a bit more compatible) in AP mode. Also remove the parameter
from the AP settings struct.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20241007144851.fe1fc46484cf.I8676fb52b818a4bedeb9c25b901e1396277ffc0b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-10-23 16:43:03 +02:00
Eric Dumazet
56440d7ec2 genetlink: hold RCU in genlmsg_mcast()
While running net selftests with CONFIG_PROVE_RCU_LIST=y I saw
one lockdep splat [1].

genlmsg_mcast() uses for_each_net_rcu(), and must therefore hold RCU.

Instead of letting all callers guard genlmsg_multicast_allns()
with a rcu_read_lock()/rcu_read_unlock() pair, do it in genlmsg_mcast().

This also means the @flags parameter is useless, we need to always use
GFP_ATOMIC.

[1]
[10882.424136] =============================
[10882.424166] WARNING: suspicious RCU usage
[10882.424309] 6.12.0-rc2-virtme #1156 Not tainted
[10882.424400] -----------------------------
[10882.424423] net/netlink/genetlink.c:1940 RCU-list traversed in non-reader section!!
[10882.424469]
other info that might help us debug this:

[10882.424500]
rcu_scheduler_active = 2, debug_locks = 1
[10882.424744] 2 locks held by ip/15677:
[10882.424791] #0: ffffffffb6b491b0 (cb_lock){++++}-{3:3}, at: genl_rcv (net/netlink/genetlink.c:1219)
[10882.426334] #1: ffffffffb6b49248 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg (net/netlink/genetlink.c:61 net/netlink/genetlink.c:57 net/netlink/genetlink.c:1209)
[10882.426465]
stack backtrace:
[10882.426805] CPU: 14 UID: 0 PID: 15677 Comm: ip Not tainted 6.12.0-rc2-virtme #1156
[10882.426919] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[10882.427046] Call Trace:
[10882.427131]  <TASK>
[10882.427244] dump_stack_lvl (lib/dump_stack.c:123)
[10882.427335] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822)
[10882.427387] genlmsg_multicast_allns (net/netlink/genetlink.c:1940 (discriminator 7) net/netlink/genetlink.c:1977 (discriminator 7))
[10882.427436] l2tp_tunnel_notify.constprop.0 (net/l2tp/l2tp_netlink.c:119) l2tp_netlink
[10882.427683] l2tp_nl_cmd_tunnel_create (net/l2tp/l2tp_netlink.c:253) l2tp_netlink
[10882.427748] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115)
[10882.427834] genl_rcv_msg (net/netlink/genetlink.c:1195 net/netlink/genetlink.c:1210)
[10882.427877] ? __pfx_l2tp_nl_cmd_tunnel_create (net/l2tp/l2tp_netlink.c:186) l2tp_netlink
[10882.427927] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201)
[10882.427959] netlink_rcv_skb (net/netlink/af_netlink.c:2551)
[10882.428069] genl_rcv (net/netlink/genetlink.c:1220)
[10882.428095] netlink_unicast (net/netlink/af_netlink.c:1332 net/netlink/af_netlink.c:1357)
[10882.428140] netlink_sendmsg (net/netlink/af_netlink.c:1901)
[10882.428210] ____sys_sendmsg (net/socket.c:729 (discriminator 1) net/socket.c:744 (discriminator 1) net/socket.c:2607 (discriminator 1))

Fixes: 33f72e6f0c ("l2tp : multicast notification to the registered listeners")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: James Chapman <jchapman@katalix.com>
Cc: Tom Parkin <tparkin@katalix.com>
Cc: Johannes Berg <johannes.berg@intel.com>
Link: https://patch.msgid.link/20241011171217.3166614-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-10-15 17:52:58 -07:00
Johannes Berg
a0efa2f362 Merge net-next/main to resolve conflicts
The wireless-next tree was based on something older, and there
are now conflicts between -rc2 and work here. Merge net-next,
which has enough of -rc2 for the conflicts to happen, resolving
them in the process.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-10-09 08:59:22 +02:00
Johannes Berg
db03488897 Revert "wifi: cfg80211: unexport wireless_nlevent_flush()"
Revert this, I neglected to take into account the fact that
cfg80211 itself can be a module, but wext is always builtin.

Fixes: aee809aaa2 ("wifi: cfg80211: unexport wireless_nlevent_flush()")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-10-09 08:53:01 +02:00
Johannes Berg
aee809aaa2 wifi: cfg80211: unexport wireless_nlevent_flush()
This no longer needs to be exported, so don't export it.

Link: https://patch.msgid.link/20241007214715.3dd736dc3ac0.I1388536e99c37f28a007dd753c473ad21513d9a9@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-10-08 21:53:55 +02:00
Johannes Berg
49e3307da0 wifi: cfg80211: stop exporting wext symbols
CFG80211_WEXT_EXPORT is no longer needed, if we only make
ipw2200 return the static name for SIOCGIWNAME itself.

Link: https://patch.msgid.link/20241007211431.8d4a7242ce92.I66ceb885ddfa52c368feeea1ea884bf988c525f2@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-10-08 21:53:31 +02:00
Johannes Berg
3a1d429ebd wifi: wext/libipw: move spy implementation to libipw
There's no driver left using this other than ipw2200,
so move the data bookkeeping and code into libipw.

Link: https://patch.msgid.link/20241007210254.037d864cda7d.Ib2197cb056ff05746d3521a5fba637062acb7314@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-10-08 21:53:18 +02:00
Johannes Berg
02f220b526 wifi: ipw2x00/lib80211: move remaining lib80211 into libipw
There's already much code in libipw that used to be shared
with more drivers, but now with the prior cleanups, those old
Intel ipw2x00 drivers are also the only ones using whatever is
now left of lib80211. Move lib80211 entirely into libipw.

Link: https://patch.msgid.link/20241007202707.915ef7b9e7c7.Ib9876d2fe3c90f11d6df458b16d0b7d4bf551a8d@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-10-08 21:52:26 +02:00
Dmitry Kandybka
484bd64bdc wifi: nl80211: remove redundant null pointer check in coalescing
In 'cfg80211_free_coalesce', '&coalesce->rules[i]' is a pointer
to VLA member of 'struct cfg80211_coalesce' and should never be NULL,
so redundant check may be dropped.

I think this is correct, but I haven't tested it seriously.
Compile tested only.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Dmitry Kandybka <d.kandybka@gmail.com>
Link: https://patch.msgid.link/20241003095912.218465-1-d.kandybka@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-10-08 21:52:15 +02:00
Karthikeyan Periyasamy
bd9813d13b wifi: cfg80211: check radio iface combination for multi radio per wiphy
Currently, wiphy_verify_combinations() fails for the multi-radio per wiphy
due to the condition check on new global interface combination that DFS
only works on one channel. In a multi-radio scenario, new global interface
combination encompasses the capabilities of all radio combinations, so it
supports more than one channel with DFS. For multi-radio per wiphy,
interface combination verification needs to be performed for radio specific
interface combinations. This is necessary as the new global interface
combination combines the capabilities of all radio combinations.

Fixes: a01b1e9f99 ("wifi: mac80211: add support for DFS with multiple radios")
Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Link: https://patch.msgid.link/20240917140239.886083-1-quic_periyasa@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-10-08 21:52:11 +02:00
Dmitry Antipov
4b482281ee wifi: mac80211, cfg80211: miscellaneous spelling fixes
Correct spelling here and there as suggested by codespell.

Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Link: https://patch.msgid.link/20240913084919.118862-1-dmantipov@yandex.ru
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-10-08 21:52:09 +02:00
Remi Pommarel
68d0021fe7 wifi: cfg80211: Add wiphy_delayed_work_pending()
Add wiphy_delayed_work_pending() to check if any delayed work timer is
pending, that can be used to be sure that wiphy_delayed_work_queue()
won't postpone an already pending delayed work.

Signed-off-by: Remi Pommarel <repk@triplefau.lt>
Link: https://patch.msgid.link/20240924192805.13859-2-repk@triplefau.lt
[fix return value kernel-doc]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-10-08 21:24:00 +02:00
Chenming Huang
e1a9ae3a73 wifi: cfg80211: Do not create BSS entries for unsupported channels
Currently, in cfg80211_parse_ml_elem_sta_data(), when RNR element
indicates a BSS that operates in a channel that current regulatory
domain doesn't support, a NULL value is returned by
ieee80211_get_channel_khz() and assigned to this BSS entry's channel
field. Later in cfg80211_inform_single_bss_data(), the reported
BSS entry's channel will be wrongly overridden by transmitted BSS's.
This could result in connection failure that when wpa_supplicant
tries to select this reported BSS entry while it actually resides in
an unsupported channel.

Since this channel is not supported, it is reasonable to skip such
entries instead of reporting wrong information.

Signed-off-by: Chenming Huang <quic_chenhuan@quicinc.com>
Link: https://patch.msgid.link/20240923021644.12885-1-quic_chenhuan@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-10-08 21:15:51 +02:00
Al Viro
5f60d5f6bb move asm/unaligned.h to linux/unaligned.h
asm/unaligned.h is always an include of asm-generic/unaligned.h;
might as well move that thing to linux/unaligned.h and include
that - there's nothing arch-specific in that header.

auto-generated by the following:

for i in `git grep -l -w asm/unaligned.h`; do
	sed -i -e "s/asm\/unaligned.h/linux\/unaligned.h/" $i
done
for i in `git grep -l -w asm-generic/unaligned.h`; do
	sed -i -e "s/asm-generic\/unaligned.h/linux\/unaligned.h/" $i
done
git mv include/asm-generic/unaligned.h include/linux/unaligned.h
git mv tools/include/asm-generic/unaligned.h tools/include/linux/unaligned.h
sed -i -e "/unaligned.h/d" include/asm-generic/Kbuild
sed -i -e "s/__ASM_GENERIC/__LINUX/" include/linux/unaligned.h tools/include/linux/unaligned.h
2024-10-02 17:23:23 -04:00
Dmitry Antipov
15ea13b1b1 wifi: cfg80211: fix two more possible UBSAN-detected off-by-one errors
Although not reproduced in practice, these two cases may be
considered by UBSAN as off-by-one errors. So fix them in the
same way as in commit a26a5107bc ("wifi: cfg80211: fix UBSAN
noise in cfg80211_wext_siwscan()").

Fixes: 807f8a8c30 ("cfg80211/nl80211: add support for scheduled scans")
Fixes: 5ba63533bb ("cfg80211: fix alignment problem in scan request")
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Link: https://patch.msgid.link/20240909090806.1091956-1-dmantipov@yandex.ru
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-09-09 11:43:21 +02:00
Aditya Kumar Singh
0b7798232e wifi: cfg80211/mac80211: use proper link ID for DFS
Now that all APIs have support to handle DFS per link, use proper link ID
instead of 0.

Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Link: https://patch.msgid.link/20240906064426.2101315-8-quic_adisi@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-09-06 13:01:05 +02:00
Aditya Kumar Singh
81f67d60eb wifi: cfg80211: handle DFS per link
Currently, during starting a radar detection, no link id information is
parsed and passed down. In order to support starting radar detection
during Multi Link Operation, it is required to pass link id as well.

Add changes to first parse and then pass link id in the start radar
detection path.

Additionally, update notification APIs to allow drivers/mac80211 to
pass the link ID.

However, everything is handled at link 0 only until all API's are ready to
handle it per link.

Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Link: https://patch.msgid.link/20240906064426.2101315-6-quic_adisi@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-09-06 13:01:05 +02:00
Aditya Kumar Singh
62c16f219a wifi: cfg80211: move DFS related members to links[] in wireless_dev
A few members related to DFS handling are currently under per wireless
device data structure. However, in order to support DFS with MLO, there is
a need to have them on a per-link manner.

Hence, as a preliminary step, move members cac_started, cac_start_time
and cac_time_ms to be on a per-link basis.

Since currently, link ID is not known at all places, use default value of
0 for now.

Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Link: https://patch.msgid.link/20240906064426.2101315-5-quic_adisi@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-09-06 13:01:05 +02:00
Aditya Kumar Singh
f4bb650cfa wifi: trace: unlink rdev_end_cac trace event from wiphy_netdev_evt class
rdev_end_cac trace event is linked with wiphy_netdev_evt event class.
There is no option to pass link ID currently to wiphy_netdev_evt class.
A subsequent change would pass link ID to rdev_end_cac event and hence
it can no longer derive the event class from wiphy_netdev_evt.

Therefore, unlink rdev_end_cac event from wiphy_netdev_evt and define it's
own independent trace event. Link ID would be passed in subsequent change.

Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Link: https://patch.msgid.link/20240906064426.2101315-4-quic_adisi@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-09-06 13:01:04 +02:00
Veerendranath Jakkam
450732abad wifi: cfg80211: avoid overriding direct/MBSSID BSS with per-STA profile BSS
Avoid overriding BSS information generated from MBSSID or direct source
with BSS information generated from per-STA profile source to avoid
losing actual signal strength and information elements such as RNR and
Basic ML elements.

Signed-off-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Link: https://patch.msgid.link/20240904030917.3602369-4-quic_vjakkam@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-09-06 12:56:33 +02:00
Veerendranath Jakkam
bff93c89ab wifi: cfg80211: skip indicating signal for per-STA profile BSSs
Currently signal of the BSS entry generated from the per-STA profile
indicated as zero, but userspace may consider it as high signal
strength since 0 dBm is a valid RSSI value.

To avoid this don't report the signal to userspace when the BSS entry
created from a per-STA profile.

Signed-off-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Link: https://patch.msgid.link/20240904030917.3602369-3-quic_vjakkam@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-09-06 12:56:33 +02:00
Veerendranath Jakkam
0fdcc994a4 wifi: cfg80211: make BSS source types public
Define public enum with BSS source types in core.h. Upcoming patches
need this to store BSS source type in struct cfg80211_internal_bss.

Signed-off-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Link: https://patch.msgid.link/20240904030917.3602369-2-quic_vjakkam@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-09-06 12:56:33 +02:00
Veerendranath Jakkam
f54a1baee0 wifi: cfg80211: Avoid RCU debug splat in __cfg80211_bss_update error paths
Replace rcu_dereference() with rcu_access_pointer() since we already
hold the lock and own the 'tmp' at this point. This is needed to avoid
suspicious rcu_dereference_check warnings in__cfg80211_bss_update error
paths.

Signed-off-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Link: https://patch.msgid.link/20240904142021.3887360-1-quic_vjakkam@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-09-06 12:55:43 +02:00
Dmitry Antipov
a26a5107bc wifi: cfg80211: fix UBSAN noise in cfg80211_wext_siwscan()
Looking at https://syzkaller.appspot.com/bug?extid=1a3986bbd3169c307819
and running reproducer with CONFIG_UBSAN_BOUNDS, I've noticed the
following:

[ T4985] UBSAN: array-index-out-of-bounds in net/wireless/scan.c:3479:25
[ T4985] index 164 is out of range for type 'struct ieee80211_channel *[]'
<...skipped...>
[ T4985] Call Trace:
[ T4985]  <TASK>
[ T4985]  dump_stack_lvl+0x1c2/0x2a0
[ T4985]  ? __pfx_dump_stack_lvl+0x10/0x10
[ T4985]  ? __pfx__printk+0x10/0x10
[ T4985]  __ubsan_handle_out_of_bounds+0x127/0x150
[ T4985]  cfg80211_wext_siwscan+0x11a4/0x1260
<...the rest is not too useful...>

Even if we do 'creq->n_channels = n_channels' before 'creq->ssids =
(void *)&creq->channels[n_channels]', UBSAN treats the latter as
off-by-one error. Fix this by using pointer arithmetic rather than
an expression with explicit array indexing and use convenient
'struct_size()' to simplify the math here and in 'kzalloc()' above.

Fixes: 5ba63533bb ("cfg80211: fix alignment problem in scan request")
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Reviewed-by: Kees Cook <kees@kernel.org>
Link: https://patch.msgid.link/20240905150400.126386-1-dmantipov@yandex.ru
[fix coding style for multi-line calculation]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-09-06 12:54:57 +02:00
Jakub Kicinski
43b7724487 wireless-next patches for v6.12
mwifiex has recently started to see active development which is good
 news. rtw89 is also under active development and got several new
 features. Otherwise not really anything out of ordinary.
 
 We have one conflict in ath12k but that's easy to fix:
 
 https://lore.kernel.org/all/20240808104348.6846e064@canb.auug.org.au/
 
 Major changes:
 
 mwifiex
 
 * support for up to ten Authentication and Key Management (AKM) suites
 
 * host MAC Sublayer Management Entity (MLME) client and AP mode support
 
 * WPA-PSK-SHA256 AKM suite support
 
 rtw88
 
 * improve USB performance by aggregation
 
 rtw89
 
 * Wi-Fi 6 chip RTL8852BE-VT support
 
 * WoWLAN net-detect support
 
 * hardware encryption in unicast management frames support
 
 * hardware rfkill support
 
 ath12k
 
 * DebugFS support for transmit DE stats
 
 * Make ASPM support hardware-dependent
 
 iwlwifi
 
 * channel puncturing for US/CAN from UEFI
 
 * bump FW API to 93 for BZ/SC devices
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Merge tag 'wireless-next-2024-09-04' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next

Kalle Valo says:

====================
pull-request: wireless-next-2024-09-04

here's a pull request to net-next tree, more info below. Please let me know if
there are any problems.
====================

Conflicts:

drivers/net/wireless/ath/ath12k/hw.c
  38055789d1 ("wifi: ath12k: use 128 bytes aligned iova in transmit path for WCN7850")
  8be12629b4 ("wifi: ath12k: restore ASPM for supported hardwares only")
https://lore.kernel.org/87msldyj97.fsf@kernel.org

Link: https://patch.msgid.link/20240904153205.64C11C4CEC2@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-09-04 17:20:14 -07:00
Alexander Lobakin
05c1280a2b netdev_features: convert NETIF_F_NETNS_LOCAL to dev->netns_local
"Interface can't change network namespaces" is rather an attribute,
not a feature, and it can't be changed via Ethtool.
Make it a "cold" private flag instead of a netdev_feature and free
one more bit.

Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-09-03 11:36:43 +02:00
Issam Hamdi
2036171288 wifi: cfg80211: Set correct chandef when starting CAC
When starting CAC in a mode other than AP mode, it return a
"WARNING: CPU: 0 PID: 63 at cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]"
caused by the chandef.chan being null at the end of CAC.

Solution: Ensure the channel definition is set for the different modes
when starting CAC to avoid getting a NULL 'chan' at the end of CAC.

 Call Trace:
  ? show_regs.part.0+0x14/0x16
  ? __warn+0x67/0xc0
  ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]
  ? report_bug+0xa7/0x130
  ? exc_overflow+0x30/0x30
  ? handle_bug+0x27/0x50
  ? exc_invalid_op+0x18/0x60
  ? handle_exception+0xf6/0xf6
  ? exc_overflow+0x30/0x30
  ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]
  ? exc_overflow+0x30/0x30
  ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]
  ? regulatory_propagate_dfs_state.cold+0x1b/0x4c [cfg80211]
  ? cfg80211_propagate_cac_done_wk+0x1a/0x30 [cfg80211]
  ? process_one_work+0x165/0x280
  ? worker_thread+0x120/0x3f0
  ? kthread+0xc2/0xf0
  ? process_one_work+0x280/0x280
  ? kthread_complete_and_exit+0x20/0x20
  ? ret_from_fork+0x19/0x24

Reported-by: Kretschmer Mathias <mathias.kretschmer@fit.fraunhofer.de>
Signed-off-by: Issam Hamdi <ih@simonwunderlich.de>
Link: https://patch.msgid.link/20240816142418.3381951-1-ih@simonwunderlich.de
[shorten subject, remove OCB, reorder cases to match previous list]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-08-28 12:53:24 +02:00
Yu Jiaoliang
32bf7729d2 wifi: cfg80211: Use kmemdup_array instead of kmemdup for multiple allocation
Let the kememdup_array() take care about multiplication and possible
overflows.

Signed-off-by: Yu Jiaoliang <yujiaoliang@vivo.com>
Reviewed-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://patch.msgid.link/20240822074743.1366561-1-yujiaoliang@vivo.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-08-27 10:28:56 +02:00
hhorace
a68b22e290 wifi: cfg80211: fix bug of mapping AF3x to incorrect User Priority
According to RFC8325 4.3, Multimedia Streaming: AF31(011010, 26),
AF32(011100, 28), AF33(011110, 30) maps to User Priority = 4
and AC_VI (Video).

However, the original code remain the default three Most Significant
Bits (MSBs) of the DSCP, which makes AF3x map to User Priority = 3
and AC_BE (Best Effort).

Fixes: 6fdb8b8781 ("wifi: cfg80211: Update the default DSCP-to-UP mapping")
Signed-off-by: hhorace <hhoracehsu@gmail.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20240807082205.1369-1-hhoracehsu@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-08-27 10:28:54 +02:00
Christophe JAILLET
1842442007 wifi: lib80211: Constify struct lib80211_crypto_ops
Now that functions in lib80211 handle "const struct lib80211_crypto_ops",
some structure can be constified as well.

Constifying these structures moves some data to a read-only section, so
increase overall security.

Before:
   text	   data	    bss	    dec	    hex	filename
   7273	    604	     16	   7893	   1ed5	net/wireless/lib80211.o

After:
   text	   data	    bss	    dec	    hex	filename
   7429	    444	     16	   7889	   1ed1	net/wireless/lib80211.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/0cc3741c15f2c502cc85bddda9d6582b5977c8f9.1722839425.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-08-27 10:28:51 +02:00
Christophe JAILLET
3a3d1afd25 wifi: lib80211: Handle const struct lib80211_crypto_ops in lib80211
lib80211_register_crypto_ops() and lib80211_unregister_crypto_ops() don't
modify their "struct lib80211_crypto_ops *ops" argument. So, it can be
declared as const.

Doing so, some adjustments are needed to also constify some date in
"struct lib80211_crypt_data", "struct lib80211_crypto_alg" and the
return value of lib80211_get_crypto_ops().

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/c74085e02f33a11327582b19c9f51c3236e85ae2.1722839425.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-08-27 10:28:49 +02:00
Johannes Berg
6873cc4416 wifi: cfg80211: correct S1G beacon length calculation
The minimum header length calculation (equivalent to the start
of the elements) for the S1G long beacon erroneously required
only up to the start of u.s1g_beacon rather than the start of
u.s1g_beacon.variable. Fix that, and also shuffle the branches
around a bit to not assign useless values that are overwritten
later.

Reported-by: syzbot+0f3afa93b91202f21939@syzkaller.appspotmail.com
Fixes: 9eaffe5078 ("cfg80211: convert S1G beacon to scan results")
Link: https://patch.msgid.link/20240724132912.9662972db7c1.I8779675b5bbda4994cc66f876b6b87a2361c3c0b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-07-26 12:32:47 +02:00
Veerendranath Jakkam
baeaabf970 wifi: cfg80211: fix reporting failed MLO links status with cfg80211_connect_done
Individual MLO links connection status is not copied to
EVENT_CONNECT_RESULT data while processing the connect response
information in cfg80211_connect_done(). Due to this failed links
are wrongly indicated with success status in EVENT_CONNECT_RESULT.

To fix this, copy the individual MLO links status to the
EVENT_CONNECT_RESULT data.

Fixes: 53ad07e982 ("wifi: cfg80211: support reporting failed links")
Signed-off-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Reviewed-by: Carlos Llamas <cmllamas@google.com>
Link: https://patch.msgid.link/20240724125327.3495874-1-quic_vjakkam@quicinc.com
[commit message editorial changes]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-07-26 12:31:45 +02:00
Felix Fietkau
510dba80ed wifi: cfg80211: add helper for checking if a chandef is valid on a radio
Check if the full channel width is in the radio's frequency range.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://patch.msgid.link/7c8ea146feb6f37cee62e5ba6be5370403695797.1720514221.git-series.nbd@nbd.name
[add missing Return: documentation]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-07-09 11:36:00 +02:00
Felix Fietkau
abb4cfe366 wifi: cfg80211: extend interface combination check for multi-radio
Add a field in struct iface_combination_params to check per-radio
interface combinations instead of per-wiphy ones.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://patch.msgid.link/32b28da89c2d759b0324deeefe2be4cee91de18e.1720514221.git-series.nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-07-09 11:29:59 +02:00
Felix Fietkau
e6c06ca8f2 wifi: cfg80211: add support for advertising multiple radios belonging to a wiphy
The prerequisite for MLO support in cfg80211/mac80211 is that all the links
participating in MLO must be from the same wiphy/ieee80211_hw. To meet this
expectation, some drivers may need to group multiple discrete hardware each
acting as a link in MLO under single wiphy.

With this change, supported frequencies and interface combinations of each
individual radio are reported to user space. This allows user space to figure
out the limitations of what combination of channels can be used concurrently.

Even for non-MLO devices, this improves support for devices capable of
running on multiple channels at the same time.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://patch.msgid.link/18a88f9ce82b1c9f7c12f1672430eaf2bb0be295.1720514221.git-series.nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-07-09 11:29:59 +02:00
Felix Fietkau
34ce9c8b8a wifi: nl80211: split helper function from nl80211_put_iface_combinations
Create a helper function that puts the data from struct
ieee80211_iface_combination to a nl80211 message.
This will be used for adding per-radio interface combination data.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://patch.msgid.link/22a0eee19dbcf98627239328bc66decd3395122c.1719919832.git-series.nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-07-08 17:27:04 +02:00
Johannes Berg
a7e5793035 wifi: nl80211: don't give key data to userspace
When a key is requested by userspace, there's really no need
to include the key data, the sequence counter is really what
userspace needs in this case. The fact that it's included is
just a historic quirk.

Remove the key data.

Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20240627104411.b6a4f097e4ea.I7e6cc976cb9e8a80ef25a3351330f313373b4578@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-06-28 09:56:18 +02:00
Jakub Kicinski
56bf02c26a Highlights this time are:
- cfg80211/nl80211:
     * improvements for 6 GHz regulatory flexibility
 
  - mac80211:
     * use generic netdev stats
     * multi-link improvements/fixes
 
  - brcmfmac:
     * MFP support (to enable WPA3)
 
  - wilc1000:
     * suspend/resume improvements
 
  - iwlwifi:
     * remove support for older FW for new devices
     * fast resume (keeping the device configured)
 
  - wl18xx:
     * support newer firmware versions
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Merge tag 'wireless-next-2024-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next

Johannes Berg says:

====================
Highlights this time are:

 - cfg80211/nl80211:
    * improvements for 6 GHz regulatory flexibility

 - mac80211:
    * use generic netdev stats
    * multi-link improvements/fixes

 - brcmfmac:
    * MFP support (to enable WPA3)

 - wilc1000:
    * suspend/resume improvements

 - iwlwifi:
    * remove support for older FW for new devices
    * fast resume (keeping the device configured)

 - wl18xx:
    * support newer firmware versions

* tag 'wireless-next-2024-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (100 commits)
  wifi: brcmfmac: of: Support interrupts-extended
  wifi: brcmsmac: advertise MFP_CAPABLE to enable WPA3
  net: rfkill: Correct return value in invalid parameter case
  wifi: mac80211: fix NULL dereference at band check in starting tx ba session
  wifi: iwlwifi: mvm: fix rs.h kernel-doc
  wifi: iwlwifi: fw: api: datapath: fix kernel-doc
  wifi: iwlwifi: fix remaining mistagged kernel-doc comments
  wifi: iwlwifi: fix prototype mismatch kernel-doc warnings
  wifi: iwlwifi: fix kernel-doc in iwl-fh.h
  wifi: iwlwifi: fix kernel-doc in iwl-trans.h
  wifi: iwlwifi: pcie: fix kernel-doc
  wifi: iwlwifi: dvm: fix kernel-doc warnings
  wifi: iwlwifi: mvm: don't log error for failed UATS table read
  wifi: iwlwifi: trans: make bad state warnings
  wifi: iwlwifi: fw: api: fix some kernel-doc
  wifi: iwlwifi: mvm: remove init_dbg module parameter
  wifi: iwlwifi: update the BA notification API
  wifi: iwlwifi: mvm: always unblock EMLSR on ROC end
  wifi: iwlwifi: mvm: use IWL_FW_CHECK for link ID check
  wifi: iwlwifi: mvm: don't flush BSSes on restart with MLD API
  ...
====================

Link: https://patch.msgid.link/20240627114135.28507-3-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-06-27 13:53:43 -07:00
Jakub Kicinski
193b9b2002 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.

No conflicts.

Adjacent changes:
  e3f02f32a0 ("ionic: fix kernel panic due to multi-buffer handling")
  d9c0420999 ("ionic: Mark error paths in the data path as unlikely")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-06-27 12:14:11 -07:00
Eric Dumazet
d1cba2ea81 wifi: cfg80211: restrict NL80211_ATTR_TXQ_QUANTUM values
syzbot is able to trigger softlockups, setting NL80211_ATTR_TXQ_QUANTUM
to 2^31.

We had a similar issue in sch_fq, fixed with commit
d9e15a2733 ("pkt_sched: fq: do not accept silly TCA_FQ_QUANTUM")

watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [kworker/1:0:24]
Modules linked in:
irq event stamp: 131135
 hardirqs last  enabled at (131134): [<ffff80008ae8778c>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:85 [inline]
 hardirqs last  enabled at (131134): [<ffff80008ae8778c>] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:95
 hardirqs last disabled at (131135): [<ffff80008ae85378>] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline]
 hardirqs last disabled at (131135): [<ffff80008ae85378>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:551
 softirqs last  enabled at (125892): [<ffff80008907e82c>] neigh_hh_init net/core/neighbour.c:1538 [inline]
 softirqs last  enabled at (125892): [<ffff80008907e82c>] neigh_resolve_output+0x268/0x658 net/core/neighbour.c:1553
 softirqs last disabled at (125896): [<ffff80008904166c>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
CPU: 1 PID: 24 Comm: kworker/1:0 Not tainted 6.9.0-rc7-syzkaller-gfda5695d692c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: mld mld_ifc_work
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
 pc : __list_del include/linux/list.h:195 [inline]
 pc : __list_del_entry include/linux/list.h:218 [inline]
 pc : list_move_tail include/linux/list.h:310 [inline]
 pc : fq_tin_dequeue include/net/fq_impl.h:112 [inline]
 pc : ieee80211_tx_dequeue+0x6b8/0x3b4c net/mac80211/tx.c:3854
 lr : __list_del_entry include/linux/list.h:218 [inline]
 lr : list_move_tail include/linux/list.h:310 [inline]
 lr : fq_tin_dequeue include/net/fq_impl.h:112 [inline]
 lr : ieee80211_tx_dequeue+0x67c/0x3b4c net/mac80211/tx.c:3854
sp : ffff800093d36700
x29: ffff800093d36a60 x28: ffff800093d36960 x27: dfff800000000000
x26: ffff0000d800ad50 x25: ffff0000d800abe0 x24: ffff0000d800abf0
x23: ffff0000e0032468 x22: ffff0000e00324d4 x21: ffff0000d800abf0
x20: ffff0000d800abf8 x19: ffff0000d800abf0 x18: ffff800093d363c0
x17: 000000000000d476 x16: ffff8000805519dc x15: ffff7000127a6cc8
x14: 1ffff000127a6cc8 x13: 0000000000000004 x12: ffffffffffffffff
x11: ffff7000127a6cc8 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffff80009287aa08 x4 : 0000000000000008 x3 : ffff80008034c7fc
x2 : ffff0000e0032468 x1 : 00000000da0e46b8 x0 : ffff0000e0032470
Call trace:
  __list_del include/linux/list.h:195 [inline]
  __list_del_entry include/linux/list.h:218 [inline]
  list_move_tail include/linux/list.h:310 [inline]
  fq_tin_dequeue include/net/fq_impl.h:112 [inline]
  ieee80211_tx_dequeue+0x6b8/0x3b4c net/mac80211/tx.c:3854
  wake_tx_push_queue net/mac80211/util.c:294 [inline]
  ieee80211_handle_wake_tx_queue+0x118/0x274 net/mac80211/util.c:315
  drv_wake_tx_queue net/mac80211/driver-ops.h:1350 [inline]
  schedule_and_wake_txq net/mac80211/driver-ops.h:1357 [inline]
  ieee80211_queue_skb+0x18e8/0x2244 net/mac80211/tx.c:1664
  ieee80211_tx+0x260/0x400 net/mac80211/tx.c:1966
  ieee80211_xmit+0x278/0x354 net/mac80211/tx.c:2062
  __ieee80211_subif_start_xmit+0xab8/0x122c net/mac80211/tx.c:4338
  ieee80211_subif_start_xmit+0xe0/0x438 net/mac80211/tx.c:4532
  __netdev_start_xmit include/linux/netdevice.h:4903 [inline]
  netdev_start_xmit include/linux/netdevice.h:4917 [inline]
  xmit_one net/core/dev.c:3531 [inline]
  dev_hard_start_xmit+0x27c/0x938 net/core/dev.c:3547
  __dev_queue_xmit+0x1678/0x33fc net/core/dev.c:4341
  dev_queue_xmit include/linux/netdevice.h:3091 [inline]
  neigh_resolve_output+0x558/0x658 net/core/neighbour.c:1563
  neigh_output include/net/neighbour.h:542 [inline]
  ip6_finish_output2+0x104c/0x1ee8 net/ipv6/ip6_output.c:137
  ip6_finish_output+0x428/0x7a0 net/ipv6/ip6_output.c:222
  NF_HOOK_COND include/linux/netfilter.h:303 [inline]
  ip6_output+0x270/0x594 net/ipv6/ip6_output.c:243
  dst_output include/net/dst.h:450 [inline]
  NF_HOOK+0x160/0x4f0 include/linux/netfilter.h:314
  mld_sendpack+0x7b4/0x10f4 net/ipv6/mcast.c:1818
  mld_send_cr net/ipv6/mcast.c:2119 [inline]
  mld_ifc_work+0x840/0xd0c net/ipv6/mcast.c:2650
  process_one_work+0x7b8/0x15d4 kernel/workqueue.c:3267
  process_scheduled_works kernel/workqueue.c:3348 [inline]
  worker_thread+0x938/0xef4 kernel/workqueue.c:3429
  kthread+0x288/0x310 kernel/kthread.c:388
  ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860

Fixes: 52539ca89f ("cfg80211: Expose TXQ stats and parameters to userspace")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20240615160800.250667-1-edumazet@google.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-06-26 10:23:30 +02:00
Ilan Peer
5036eaffed wifi: cfg80211: Always call tracing
Call the tracing function even if the cfg80211 callbacks
are not set. This would allow better understanding of
user space actions.

Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Link: https://patch.msgid.link/20240614093541.018cb816e176.I28f68740a6b42144346f5c175c7874b0a669a364@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-06-26 10:22:12 +02:00
Jakub Kicinski
a6ec08beec Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.

Conflicts:

drivers/net/ethernet/broadcom/bnxt/bnxt.c
  1e7962114c ("bnxt_en: Restore PTP tx_avail count in case of skb_pad() error")
  165f87691a ("bnxt_en: add timestamping statistics support")

No adjacent changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-06-20 13:49:59 -07:00
Emmanuel Grumbach
671b6b1b1e wifi: cfg80211: honor WIPHY_FLAG_SPLIT_SCAN_6GHZ in cfg80211_conn_scan
If a user uses iw to connect to a network and we don't have any
information about the existing networks, cfg80211 will trigger a scan
internally even if the user didn't ask for a scan. This scan is
implemented by cfg80211_conn_scan(). This function called rdev_scan()
directly without honoring the WIPHY_FLAG_SPLIT_SCAN_6GHZ flag.
Use cfg80211_scan instead, this will split the scan if the low level
driver asked to.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240605135233.33f03661476a.I7b5be20a55aafe012cd9ddb3b4ba2d46b256ace4@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-06-12 13:04:26 +02:00
Avraham Stern
f737b70434 wifi: nl80211: remove the FTMs per burst limit for NDP ranging
In NDP ranging, the number of NDP exchanges is not negotiated
and thus is not limited by the protocol. Remove the limit on
FTMs per burst for trigger based and non trigger based ranging.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240605135233.916e228537d9.I5fe4c1cefa1c1328726e7615dd5a0d861c694381@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-06-12 13:04:25 +02:00
Benjamin Berg
91b193d546 wifi: cfg80211: reject non-conformant 6 GHz center frequencies
On 6 GHz (and also 5 GHz to some degree), only a specific set of center
frequencies should be used depending on the channel bandwidth. Verify
this is the case on 6 GHz. For 5 GHz, we are more accepting as there are
APs that got it wrong historically.

Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240602102200.876b10a2beda.I0d3d0daea4014e99654437ff6691378dbe452652@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-06-12 13:04:25 +02:00
Johannes Berg
c1d8bd8d77 wifi: cfg80211: add regulatory flag to allow VLP AP operation
Add a regulatory flag to allow VLP AP operation even on
channels otherwise marked NO_IR, which may be possible
in some regulatory domains/countries.

Note that this requires checking also when the beacon is
changed, since that may change the regulatory power type.

Reviewed-by: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://msgid.link/20240523120945.63792ce19790.Ie2a02750d283b78fbf3c686b10565fb0388889e2@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-06-12 13:04:25 +02:00