We want to ensure everything holds the wiphy lock,
so also extend that to the MAC change callback.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We want to extend the wiphy locking to the interface list,
so move that into the section locked with the wiphy lock.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We want to replace the locking in mac80211 by just the wiphy
mutex, so hold the lock here around concurrency checks for
the future where the chanctx_mtx used inside goes away.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We should hold the wiphy mutex here since we're going
to call the driver and want to remove the sta_mtx.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Check that we hold the wiphy mutex in the ops when
calling the driver, since we're now on our way to
always hold it, and simplify the locking.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Again this should be per link and will get cancellation
issues, move it to a wiphy work.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This work should be made per link as well, and then
will have cancellation issues. Moving it to a wiphy
work already fixes those beforehand.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This again is intended for future cleanups that are
possible when mac80211 and drivers can assume the
wiphy is locked.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
One more work that will now execute with the wiphy
locked, for future cleanups.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This way we hold the wiphy mutex there, as a step towards
removing some of the additional locks we have.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Again, to have the wiphy locked for it.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This also has the wiphy locked here then. We need to use
the _locked version of cfg80211_sched_scan_stopped() now,
which also fixes an old deadlock there.
Fixes: a05829a722 ("cfg80211: avoid holding the RTNL when calling the driver")
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Along with everything else, move the dynamic PS work
to be a wiphy work, to simplify locking later.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Lock the wiphy in the IP address notifier as another
place that should have it locked before calling into
the driver. This needs a bit of attention since the
notifier can be called while the wiphy is already
locked, when we remove an interface. Handle this by
not running the notifier in this case, and instead
calling out to the driver directly.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Again this serves to simplify the locking in mac80211
in the future, since this is a relatively complex work.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Move the scan work to wiphy work, which also simplifies
the way we handle the work vs. the scan configuration.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Move the radar detect work to wiphy work in order
to lock the wiphy for it without doing it manually.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Move the DFS CAC work over to hold the wiphy lock
there without worry about work cancellation.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add more might_sleep() checks and check sdata-in-driver
for one additional place.
type=feature
ticket=jira:WIFI-314309
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Convert the A-MPDU work to wiphy work so it holds the
wiphy mutex and we can later guarantee that to drivers.
It might seem that we could run these concurrently for
different stations, but they're all on the ordered
mac80211 workqueue, so this shouldn't matter for that.
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Before converting more works to wiphy work, add
flushing in mac80211 where we also flush the
mac80211 workqueue. Not needed in suspend since
cfg80211 will have taken care of it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
It's no longer really needed to ensure that the debugfs
file isn't going away, debugfs handles that. So there's
no point in holding dev_base_lock or RTNL here, but we
should instead hold the wiphy lock since drivers will
be allowed to depend on that. Do that, which requires
splitting the sdata and link macros a bit.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since we no longer really use the RTNL, there's no point
in locking it here. Most drivers don't really need to
have any locks here anyway, and the rest are probably
completely broken, but it's a debugfs-only callback so
it really doesn't matter much.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The current SMPS status handling isn't per link, so we only
ever change the deflink, which is obviously wrong, it's not
even used for multi-link connections, but the request API
actually includes the link ID.
Use the new status_data changes to move the handling to the
right link, this also saves parsing the frame again on the
status report, instead we can now check only if it was an
SMPS frame.
Of course, move the worker to be a wiphy work so that we're
able to cancel it safely for the link.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When the connection is a MLO connection, a SMPS request should be
sent on a specific link, as SMPS is BSS specific, and the DA and BSSID
used for the action frame transmission should be the AP MLD address, as
the underlying driver is expected to perform the address translation
(based on the link ID).
Fix the SMPS request handling to use the AP MLD address and provide the
link ID for the request processing during Tx.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Take one more free bit to indicate it's IDR vs. internal
usage, to be able to carve out some bits here for other
internal usage, other than IDR handling with a full ACK
SKB, that is.
Reviewed-by: Benjamin Berg <benjamin.berg@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The second pull request for v6.6, this time with both stack and driver
changes. Unusually we have only one major new feature but lots of
small cleanup all over, I guess this is due to people have been on
vacation the last month.
Major changes:
rtw89
* Introduce Time Averaged SAR (TAS) support
-----BEGIN PGP SIGNATURE-----
iQFFBAABCgAvFiEEiBjanGPFTz4PRfLobhckVSbrbZsFAmToqosRHGt2YWxvQGtl
cm5lbC5vcmcACgkQbhckVSbrbZv9XQf9HDq9smbuWLvwzNjbbS31hHFLmnfhN8Zp
+Zzn47gpMCle9ahGLQyw8lcfNPWCMyqOu4sGQ6hyyuH+YXoxZryuq9QDwWo9L/b1
5Cpm4IaBYBMm0ZoOkWw2lQSzGyNrXgvCEKRVC+pYQMvr5V2aEWxT/kT4guiou9D5
OXPRFN2iqZP0Q3TKcfKWRnWn3S0Ok3kZCFuXcWkL0sgwjqP/wbAPO1XNI1IImKNM
xUd0zT4vK/layYq7i20y8blglI5kcp/aKCFEwYpQC2WPeZ3Wtl1G9PQ8eze5Gc2Q
NTw3xfr6tENIcAmYoLdBdKbUq6e6pwLwXlojlZ2beR6s7LHM30AinQ==
=2Hja
-----END PGP SIGNATURE-----
Merge tag 'wireless-next-2023-08-25' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
Kalle Valo says:
====================
wireless-next patches for v6.6
The second pull request for v6.6, this time with both stack and driver
changes. Unusually we have only one major new feature but lots of
small cleanup all over, I guess this is due to people have been on
vacation the last month.
Major changes:
rtw89
- Introduce Time Averaged SAR (TAS) support
* tag 'wireless-next-2023-08-25' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (114 commits)
wifi: rtlwifi: rtl8723: Remove unused function rtl8723_cmd_send_packet()
wifi: rtw88: usb: kill and free rx urbs on probe failure
wifi: rtw89: Fix clang -Wimplicit-fallthrough in rtw89_query_sar()
wifi: rtw89: phy: modify register setting of ENV_MNTR, PHYSTS and DIG
wifi: rtw89: phy: add phy_gen_def::cr_base to support WiFi 7 chips
wifi: rtw89: mac: define register address of rx_filter to generalize code
wifi: rtw89: mac: define internal memory address for WiFi 7 chip
wifi: rtw89: mac: generalize code to indirectly access WiFi internal memory
wifi: rtw89: mac: add mac_gen_def::band1_offset to map MAC band1 register address
wifi: wlcore: sdio: Use module_sdio_driver macro to simplify the code
wifi: rtw89: initialize multi-channel handling
wifi: rtw89: provide functions to configure NoA for beacon update
wifi: rtw89: call rtw89_chan_get() by vif chanctx if aware of vif
wifi: rtw89: sar: let caller decide the center frequency to query
wifi: rtw89: refine rtw89_correct_cck_chan() by rtw89_hw_to_nl80211_band()
wifi: rtw89: add function prototype for coex request duration
Fix nomenclature for USB and PCI wireless devices
wifi: ath: Use is_multicast_ether_addr() to check multicast Ether address
wifi: ath12k: Remove unused declarations
wifi: ath12k: add check max message length while scanning with extraie
...
====================
Link: https://lore.kernel.org/r/20230825132230.A0833C433C8@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The header file crypto/algapi.h is for internal use only. Use the
header file crypto/utils.h instead.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Link: https://lore.kernel.org/r/E1qYlA0-006vFr-Ts@formenos.hmeau.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Commit ccf80ddfe4 ("mac80211: mesh function and data structures
definitions") introducted this but never implemented it.
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20230731140712.1204-1-yuehaibing@huawei.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Code inspection reveals that we switch the puncturing bitmap
before the real channel switch, since that happens only in
the second round of the worker after the channel context is
switched by ieee80211_link_use_reserved_context().
Fixes: 2cc25e4b2a ("wifi: mac80211: configure puncturing bitmap")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When probing a client, first check if we have it, and then
check for the channel context, otherwise you can trigger
the warning there easily by probing when the AP isn't even
started yet. Since a client existing means the AP is also
operating, we can then keep the warning.
Also simplify the moved code a bit.
Reported-by: syzbot+999fac712d84878a7379@syzkaller.appspotmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The commit 06470f7468 ("mac80211: add API to allow filtering frames in BA sessions")
added reorder_buf_filtered to mark frames filtered by firmware, and it
can only work correctly if hw.max_rx_aggregation_subframes <= 64 since
it stores the bitmap in a u64 variable.
However, new HE or EHT devices can support BlockAck number up to 256 or
1024, and then using a higher subframe index leads UBSAN warning:
UBSAN: shift-out-of-bounds in net/mac80211/rx.c:1129:39
shift exponent 215 is too large for 64-bit type 'long long unsigned int'
Call Trace:
<IRQ>
dump_stack_lvl+0x48/0x70
dump_stack+0x10/0x20
__ubsan_handle_shift_out_of_bounds+0x1ac/0x360
ieee80211_release_reorder_frame.constprop.0.cold+0x64/0x69 [mac80211]
ieee80211_sta_reorder_release+0x9c/0x400 [mac80211]
ieee80211_prepare_and_rx_handle+0x1234/0x1420 [mac80211]
ieee80211_rx_list+0xaef/0xf60 [mac80211]
ieee80211_rx_napi+0x53/0xd0 [mac80211]
Since only old hardware that supports <=64 BlockAck uses
ieee80211_mark_rx_ba_filtered_frames(), limit the use as it is, so add a
WARN_ONCE() and comment to note to avoid using this function if hardware
capability is not suitable.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://lore.kernel.org/r/20230818014004.16177-1-pkshih@realtek.com
[edit commit message]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
- Add support for Intel Cherry Trail Whiskey Cove PMIC LEDs
- Add support for Awinic AW20036/AW20054/AW20072 LEDs
- New Device Support
- Add support for PMI632 LPG to QCom LPG
- Add support for PMI8998 to QCom Flash
- Add support for MT6331, WLEDs and MT6332 to Mediatek MT6323 PMIC
- New Functionality
- Implement the LP55xx Charge Pump
- Add support for suspend / resume to Intel Cherry Trail Whiskey Cove PMIC
- Add support for breathing mode to Intel Cherry Trail Whiskey Cove PMIC
- Enable per-pin resolution Pinctrl in LEDs GPIO
- Fix-ups
- Allow thread to sleep by switching from spinlock to mutex
- Add lots of Device Tree bindings / support
- Adapt relationships / dependencies driven by Kconfig
- Switch I2C drivers from .probe_new() to .probe()
- Remove superfluous / duplicate code
- Replace strlcpy() with strscpy() for efficiency and overflow prevention
- Staticify various functions
- Trivial: Fixing coding style
- Simplify / reduce code
- Bug Fixes
- Prevent NETDEV_LED_MODE_LINKUP from being cleared on rename
- Repair race between led_set_brightness(LED_{OFF,FULL})
- Fix Oops relating to sleeping in critical sections
- Clear LED_INIT_DEFAULT_TRIGGER flag when clearing the current trigger
- Do not leak resources in error handling paths
- Fix unsigned comparison which can never be negative
- Provide missing NULL terminating entries in tables
- Fix misnaming issues
-----BEGIN PGP SIGNATURE-----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=9kd5
-----END PGP SIGNATURE-----
Merge tag 'leds-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds
Pull LED updates from Lee Jones:
"New Drivers:
- Add support for Intel Cherry Trail Whiskey Cove PMIC LEDs
- Add support for Awinic AW20036/AW20054/AW20072 LEDs
New Device Support:
- Add support for PMI632 LPG to QCom LPG
- Add support for PMI8998 to QCom Flash
- Add support for MT6331, WLEDs and MT6332 to Mediatek MT6323 PMIC
New Functionality:
- Implement the LP55xx Charge Pump
- Add support for suspend / resume to Intel Cherry Trail Whiskey Cove PMIC
- Add support for breathing mode to Intel Cherry Trail Whiskey Cove PMIC
- Enable per-pin resolution Pinctrl in LEDs GPIO
Fix-ups:
- Allow thread to sleep by switching from spinlock to mutex
- Add lots of Device Tree bindings / support
- Adapt relationships / dependencies driven by Kconfig
- Switch I2C drivers from .probe_new() to .probe()
- Remove superfluous / duplicate code
- Replace strlcpy() with strscpy() for efficiency and overflow prevention
- Staticify various functions
- Trivial: Fixing coding style
- Simplify / reduce code
Bug Fixes:
- Prevent NETDEV_LED_MODE_LINKUP from being cleared on rename
- Repair race between led_set_brightness(LED_{OFF,FULL})
- Fix Oops relating to sleeping in critical sections
- Clear LED_INIT_DEFAULT_TRIGGER flag when clearing the current trigger
- Do not leak resources in error handling paths
- Fix unsigned comparison which can never be negative
- Provide missing NULL terminating entries in tables
- Fix misnaming issues"
* tag 'leds-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/leds: (53 commits)
leds: leds-mt6323: Adjust return/parameter types in wled get/set callbacks
leds: sgm3140: Add richtek,rt5033-led compatible
dt-bindings: leds: sgm3140: Document richtek,rt5033 compatible
dt-bindings: backlight: kinetic,ktz8866: Add missing type for "current-num-sinks"
dt-bindings: leds: Drop unneeded quotes
leds: Fix config reference for AW200xx driver
leds: leds-mt6323: Add support for WLEDs and MT6332
leds: leds-mt6323: Add support for MT6331 leds
leds: leds-mt6323: Open code and drop MT6323_CAL_HW_DUTY macro
leds: leds-mt6323: Drop MT6323_ prefix from macros and defines
leds: leds-mt6323: Specify registers and specs in platform data
dt-bindings: leds: leds-mt6323: Document mt6332 compatible
dt-bindings: leds: leds-mt6323: Document mt6331 compatible
leds: simatic-ipc-leds-gpio: Introduce more Kconfig switches
leds: simatic-ipc-leds-gpio: Split up into multiple drivers
leds: simatic-ipc-leds-gpio: Move two extra gpio pins into another table
leds: simatic-ipc-leds-gpio: Add terminating entries to gpio tables
leds: flash: leds-qcom-flash: Fix an unsigned comparison which can never be negative
leds: cht-wcove: Remove unneeded semicolon
leds: cht-wcove: Fix an unsigned comparison which can never be negative
...
MAINTAINERS
* add missing driver git trees
ath11k
* factory test mode support
iwlwifi
* config rework to drop test devices and
split the different families
* major update for new firmware and MLO
stack
* initial multi-link reconfiguration suppor
* multi-BSSID and MLO improvements
other
* fix the last few W=1 warnings from GCC 13
* merged wireless tree to avoid conflicts
-----BEGIN PGP SIGNATURE-----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=KSBu
-----END PGP SIGNATURE-----
Merge tag 'wireless-next-2023-06-22' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
Johannes Berg says:
====================
Notable changes this time around:
MAINTAINERS
- add missing driver git trees
ath11k
- factory test mode support
iwlwifi
- config rework to drop test devices and
split the different families
- major update for new firmware and MLO
stack
- initial multi-link reconfiguration suppor
- multi-BSSID and MLO improvements
other
- fix the last few W=1 warnings from GCC 13
- merged wireless tree to avoid conflicts
* tag 'wireless-next-2023-06-22' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (245 commits)
wifi: ieee80211: fix erroneous NSTR bitmap size checks
wifi: rtlwifi: cleanup USB interface
wifi: rtlwifi: simplify LED management
wifi: ath10k: improve structure padding
wifi: ath9k: convert msecs to jiffies where needed
wifi: iwlwifi: mvm: Add support for IGTK in D3 resume flow
wifi: iwlwifi: mvm: update two most recent GTKs on D3 resume flow
wifi: iwlwifi: mvm: Refactor security key update after D3
wifi: mac80211: mark keys as uploaded when added by the driver
wifi: iwlwifi: remove support of A0 version of FM RF
wifi: iwlwifi: cfg: clean up Bz module firmware lines
wifi: iwlwifi: pcie: add device id 51F1 for killer 1675
wifi: iwlwifi: bump FW API to 83 for AX/BZ/SC devices
wifi: iwlwifi: cfg: remove trailing dash from FW_PRE constants
wifi: iwlwifi: also unify Ma device configurations
wifi: iwlwifi: also unify Sc device configurations
wifi: iwlwifi: unify Bz/Gl device configurations
wifi: iwlwifi: pcie: also drop jacket from info macro
wifi: iwlwifi: remove support for *nJ devices
wifi: iwlwifi: don't load old firmware for 22000
...
====================
Link: https://lore.kernel.org/r/20230622185602.147650-2-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Properly check for RX_DROP_UNUSABLE now that the new drop reason
infrastructure is used. Without this change, the comparison will always
be false as a more specific reason is given in the lower bits of result.
Fixes: baa951a1c1 ("mac80211: use the new drop reasons infrastructure")
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20230621120543.412920-2-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When the driver has some form of GTK rekeying offload, e.g. during
WoWLAN, mac80211 can assume that keys that the driver adds for
that are already present in the hardware acceleration. Mark them
accordingly.
Signed-off-by: Yedidya Benshimol <yedidya.ben.shimol@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230621144414.bc78c7ff2a3d.I5e313d69e2b6a7a4766ef82d0faa122dd4c1c46d@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
For extended elements, we currently only calculate the CRC
for some of them, but really we should do it also for the
rest that we care about, such as EHT operation and multi-
link.
Also, while at it, it seems we should do it even if they
aren't well-formed, so we notice if that changes.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230619161906.93235d5c8651.I6615cb3c1244bc9618066baa2bdad7982e9abd1f@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
struct sta_info may be removed without holding sta_mtx if it has not
yet been inserted. To support this, only assert that the lock is held
for links other than the deflink.
This fixes lockdep issues that may be triggered in error cases.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230619161906.cdd81377dea0.If5a6734b4b85608a2275a09b4f99b5564d82997f@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Due to all the multi-link handling, we now expose the fact that
the sdata/vif is locked to drivers, e.g. when the driver uses
ieee80211_set_monitor_channel(). This was true when a chanctx
is added to or removed from a link, _except_ in monitor mode
with the virtual sdata/vif. Change that, so that drivers can
make that assumption.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230619161906.a5cf7534beda.I5b51664231abee27e02f222083df7ccf88722929@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When receiving a multi-link association response, make sure to
track the BSS parameter change count for each link, including
the assoc link.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230619161906.1799c164e7e9.I8e2c1f5eec6eec3fab525ae2dead9f6f099a2427@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We should not receive/handle unicast protected dual
or public action frames that aren't protected, so
drop them - in the latter case of course only if MFP
is used.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230619161906.eb4461108129.I3c2223cf29d8a3586dfc74b2dda3f6fa2a4eea7c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When MFP is used, drop unprotected robust management frames also
before the 4-way handshake has been completed, i.e. no key has
been installed yet.
Signed-off-by: Alon Giladi <alon.giladi@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230619183718.cfbefddccd0c.Ife369dbb61c87e311ce15739d5b2b4763bfdfbae@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There were crashes reported in this code, and the timer_shutdown()
warning in one of the previous patches indicates that the timeout
timer for the AP response (addba_resp_timer) is still armed while
we're stopping the aggregation session.
After a very long deliberation of the code, so far the only way I
could find that might cause this would be the following sequence:
- session start requested
- session start indicated to driver, but driver returns
IEEE80211_AMPDU_TX_START_DELAY_ADDBA
- session stop requested, sets HT_AGG_STATE_WANT_STOP
- session stop worker runs ___ieee80211_stop_tx_ba_session(),
sets HT_AGG_STATE_STOPPING
From here on, the order doesn't matter exactly, but:
1. driver calls ieee80211_start_tx_ba_cb_irqsafe(),
setting HT_AGG_STATE_START_CB
2. driver calls ieee80211_stop_tx_ba_cb_irqsafe(),
setting HT_AGG_STATE_STOP_CB
3. the worker will run ieee80211_start_tx_ba_cb() for
HT_AGG_STATE_START_CB
4. the worker will run ieee80211_stop_tx_ba_cb() for
HT_AGG_STATE_STOP_CB
(the order could also be 1./3./2./4.)
This will cause ieee80211_start_tx_ba_cb() to send out the AddBA
request frame to the AP and arm the timer, but we're already in
the middle of stopping and so the ieee80211_stop_tx_ba_cb() will
no longer assume it needs to stop anything.
Prevent this by checking for WANT_STOP/STOPPING in the start CB,
and warn if we're sending a frame on a stopping session.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230618214436.e5b52777462a.I0b2ed6658e81804279f5d7c9c1918cb1f6626bf2@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This is all true today, but difficult to understand since
the callers are in other files etc. Add two new lockdep
assertions to make things easier to read.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230618214436.7f03dec6a90b.I762c11e95da005b80fa0184cb1173b99ec362acf@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There are cases where keeping sdata locked for an operation. Add a
variant that does not take sdata lock to permit these usecases.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There are cases where keeping sdata locked for an operation. Add a
variant that does not take sdata lock to permit these usecases.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The helper functions to retrieve the EML capabilities and medium
synchronization delay both assume that the type is correct. Instead of
assuming the length is correct and still checking the type, add a new
helper to check both and don't do any verification.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230618214435.1b50e7a3b3cf.I9385514d8eb6d6d3c82479a6fa732ef65313e554@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Include the Multi-Link elements found in beacon frames
in the CRC calculation, as these elements are intended
to reflect changes in the AP MLD state.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230618214435.ae8246b93d85.Ia64b45198de90ff7f70abcc997841157f148ea40@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
As a preparation to support Reconfiguration Multi Link
element, rename 'multi_link' and 'multi_link_len' fields
in 'struct ieee802_11_elems' to 'ml_basic' and 'ml_basic_len'.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230616094949.b11370d3066a.I34280ae3728597056a6a2f313063962206c0d581@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Doing this simplifies the code somewhat, as iteration over the
nontransmitted BSSs is not required anymore. Also, mac80211 should
not be iterating over the nontrans_list as it should only be accessed
while the bss_lock is held.
It also simplifies parsing of the IEs somewhat, as cfg80211 already
extracts the IEs and passes them to the callback.
Note that the only user left requiring parsing a specific BSS is the
association code if a beacon is required by the hardware.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230616094949.39ebfe2f9e59.Ia012b08e0feed8ec431b666888b459f6366f7bd1@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add NULL check for compat variable to avoid crash in
cfg80211_chandef_compatible() if it got called with
some mixed up channel context where not all the users
compatible with each other, which shouldn't happen.
Signed-off-by: Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230616094948.ae0f10dfd36b.Iea98c74aeb87bf6ef49f6d0c8687bba0dbea2abd@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In both of these cases (config_link, prep_channel) it is not needed
to parse the MBSSID data for a nontransmitted BSS. In the config_link
case the frame does not contain any MBSSID element and inheritance
rules are only needed for the ML STA profile. While in the
prep_channel case the IEs have already been processed by cfg80211 and
are already exploded.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230616094948.66d2605ff0ad.I7cdd1d390e7b0735c46204231a9e636d45b7f1e4@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If the device is associated with an AP MLD, then TDLS data frames
should have
- A1 = peer address,
- A2 = own MLD address (since the peer may now know about MLO), and
- A3 = BSSID.
Change the code to do that.
Signed-off-by: Abhishek Naik <abhishek.naik@intel.com>
Signed-off-by: Mukesh Sisodiya <mukesh.sisodiya@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230616094948.4bf648b63dfd.I98ef1dabd14b74a92120750f7746a7a512011701@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Userspace can now select the link to use for TDLS management
frames (indicating e.g. which BSSID should be used), use the
link_id received from cfg80211 to build the frames.
Signed-off-by: Mukesh Sisodiya <mukesh.sisodiya@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230616094948.ce1fc230b505.Ie773c5679805001f5a52680d68d9ce0232c57648@changeid
[Benjamin fixed some locking]
Co-developed-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
[fix sta mutex locking too]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
For multi-link operation(MLO) TDLS management
frames need to be transmitted on a specific link.
The TDLS setup request will add BSSID along with
peer address and userspace will pass the link-id
based on BSSID value to the driver(or mac80211).
Signed-off-by: Mukesh Sisodiya <mukesh.sisodiya@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230616094948.cb3d87c22812.Ia3d15ac4a9a182145bf2d418bcb3ddf4539cd0a7@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In mesh mode, ieee80211_chandef_he_6ghz_oper() is called by
mesh_matches_local() for every received mesh beacon.
On a 6 GHz mesh of a HE-only phy, this spams that the hardware does not
have EHT capabilities, even if the received mesh beacon does not have an
EHT element.
Unlike HE, not supporting EHT in the 6 GHz band is not an error so do
not print anything in this case.
Fixes: 5dca295dd7 ("mac80211: Add initial support for EHT and 320 MHz channels")
Signed-off-by: Nicolas Cavallari <nicolas.cavallari@green-communications.fr>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230614132648.28995-1-nicolas.cavallari@green-communications.fr
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There are some locking changes that will later otherwise
cause conflicts, so merge wireless into wireless-next to
avoid those.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
strlcpy() reads the entire source buffer first.
This read may exceed the destination size limit.
This is both inefficient and can lead to linear read
overflows if a source string is not NUL-terminated [1].
In an effort to remove strlcpy() completely [2], replace
strlcpy() here with strscpy().
Direct replacement is safe here since LOCAL_ASSIGN is only used by
TRACE macros and the return values are ignored.
[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
[2] https://github.com/KSPP/linux/issues/89
Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20230613003404.3538524-1-azeemshaikh38@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
As a preparation to support disabled/dormant links, add the
following function:
- ieee80211_vif_usable_links(): returns the bitmap of the links
that can be activated. Use this function in all the places that
the bitmap of the usable links is needed.
- ieee80211_vif_is_mld(): returns true iff the vif is an MLD.
Use this function in all the places where an indication that the
connection is a MLD is needed.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230608163202.86e3351da1fc.If6fe3a339fda2019f13f57ff768ecffb711b710a@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There are cases in which we don't want the user to override the
smps mode, e.g. when SMPS should be disabled due to EMLSR. Add
a driver flag to disable SMPS overriding and don't override if
it is set.
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230608163202.ef129e80556c.I74a298fdc86b87074c95228d3916739de1400597@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If we get an NDP (null data packet), there's reason to
believe the peer is just sending it to probe, and that
would happen at a low rate. Don't track this packet for
purposes of last RX rate reporting.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230608163202.8af46c4ac094.I13d9d5019addeaa4aff3c8a05f56c9f5a86b1ebd@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The channel switch parsing code would simply return if a scan is
in-progress. Supposedly, this was because channel switch announcements
from other APs should be ignored.
For the beacon case, the function is already only called if we are
associated with the sender. For the action frame cases, add the
appropriate check whether the frame is coming from the AP we are
associated with. Finally, drop the scanning check from
ieee80211_sta_process_chanswitch.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230608163202.3366e9302468.I6c7e0b58c33b7fb4c675374cfe8c3a5cddcec416@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In suspend flow "sdata" is NULL, destroy all roc's which are started.
pass "roc->sdata" to drv_cancel_remain_on_channel() to avoid NULL
dereference and destroy that roc
Signed-off-by: Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230608163202.c678187a308c.Ic11578778655e273931efc5355d570a16465d1be@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There's quite a bit of code accessing sband iftype data
(HE, HE 6 GHz, EHT) and we always need to remember to use
the ieee80211_vif_type_p2p() helper. Add new helpers to
directly get it from the sband/vif rather than having to
call ieee80211_vif_type_p2p().
Convert most code with the following spatch:
@@
expression vif, sband;
@@
-ieee80211_get_he_iftype_cap(sband, ieee80211_vif_type_p2p(vif))
+ieee80211_get_he_iftype_cap_vif(sband, vif)
@@
expression vif, sband;
@@
-ieee80211_get_eht_iftype_cap(sband, ieee80211_vif_type_p2p(vif))
+ieee80211_get_eht_iftype_cap_vif(sband, vif)
@@
expression vif, sband;
@@
-ieee80211_get_he_6ghz_capa(sband, ieee80211_vif_type_p2p(vif))
+ieee80211_get_he_6ghz_capa_vif(sband, vif)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230604120651.db099f49e764.Ie892966c49e22c7b7ee1073bc684f142debfdc84@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When fragmenting the ML per STA profile, the element ID should be
IEEE80211_MLE_SUBELEM_PER_STA_PROFILE rather than WLAN_EID_FRAGMENT.
Change the helper function to take the to be used element ID and pass
the appropriate value for each of the fragmentation levels.
Fixes: 81151ce462 ("wifi: mac80211: support MLO authentication/association with one link")
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230611121219.9b5c793d904b.I7dad952bea8e555e2f3139fbd415d0cd2b3a08c3@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Move declarations into include/net/gso.h and code into net/core/gso.c
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Stanislav Fomichev <sdf@google.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20230608191738.3947077-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
ieee80211_vif_set_links requires the sdata->local->mtx lock to be held.
Add the appropriate locking around the calls in both the link add and
remove handlers.
This causes a warning when e.g. ieee80211_link_release_channel is called
via ieee80211_link_stop from ieee80211_vif_update_links.
Fixes: 0d8c4a3c86 ("wifi: mac80211: implement add/del interface link callbacks")
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230608163202.fa0c6597fdad.I83dd70359f6cda30f86df8418d929c2064cf4995@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In the normal MLME code we always call
ieee80211_mgd_set_link_qos_params() before
ieee80211_link_info_change_notify() and some drivers,
notably iwlwifi, rely on that as they don't do anything
(but store the data) in their conf_tx.
Fix the order here to be the same as in the normal code
paths, so this isn't broken.
Fixes: 3d90110292 ("wifi: mac80211: implement link switching")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230608163202.a2a86bba2f80.Iac97e04827966d22161e63bb6e201b4061e9651b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Move the beacon loss work that might cause a disconnect
and the CSA disconnect work to be wiphy work, so we hold
the wiphy lock for them.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Channel switch obviously must be handled per link, and we
have a (potential) deadlock when canceling that work. Use
the new delayed wiphy work to handle this instead and get
rid of the explicit timer that way too.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
SMPS requests are per link, and currently there's a potential
deadlock with canceling. Use the new wiphy work to handle SMPS
instead, so that the cancel cannot deadlock.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since we want to have wiphy_lock() for the unregistration
in the future, unregister also netdevs via cfg80211 now
to be able to hold the wiphy_lock() for it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We'll need this later to convert other works that might
be cancelled from here, so convert this one first.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There are a number of upcoming things in both the stack and
drivers that would otherwise conflict, so merge wireless to
wireless-next to be able to avoid those conflicts.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If we have a reconfig failure in the driver, then we need
to shut down the network interface(s) at the network stack
level through cfg80211, which can result in a lot of those
"Failed check-sdata-in-driver check, ..." warnings, since
interfaces are considered to not be in the driver when the
reconfiguration fails, but we still need to go through all
the shutdown flow.
Avoid many of these warnings by storing the fact that the
stack experienced a reconfiguration failure and not doing
the warning in that case.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230604120651.3750c4ae6e76.I9e80d6026f59263c008a1a68f6cd6891ca0b93b0@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When we flush stations, we first take them off the list
and then destroy them one by one. If we do the different
mode recalculations while destroying them, we cause the
following scenario:
- STA 1 has 80 MHz - min chanctx width is now 80 MHz
- STA 2 has 80 MHz
- empty STA list
- destroy STA 2
- recalc min chanctx width -> results in 20 MHz as
the STA list is already empty
This is broken, since as far as the driver is concerned
STA 1 still exists at this point, and this causes issues
at least with iwlwifi.
Fix - and also optimize - this by doing the recalc of
min chanctx width (and also P2P PS) only after all the
stations were removed.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230604120651.48d262b6b42d.Ia15532657c17535c28ec0c5df263b65f0f80663c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When adding a new link to a station, this needs to cause a
recalculation of the minimum chandef since otherwise we can
have a higher bandwidth station connected on that link than
the link is operating at. Do the appropriate recalc.
Fixes: cb71f1d136 ("wifi: mac80211: add sta link addition/removal")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230604120651.377adf3c789a.I91bf28f399e16e6ac1f83bacd1029a698b4e6685@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The size of enum ieee80211_bss_change is bigger that 32,
so we need u64 to be used in a flag. Also pass u64
instead of u32 to ieee80211_reconfig_ap_links() for the same
reason.
Signed-off-by: Mukesh Sisodiya <mukesh.sisodiya@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230604120651.d53b7018a4eb.I1adaa041de51d50d84a11226573e81ceac0fe90d@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Previously, I didn't implement restarting here at all if the
interface is an MLD, so it only worked for non-MLO. Add the
needed code to restart an AP MLD correctly.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230504134511.828474-12-gregory.greenman@intel.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We need to teach the low level driver about the EML capability which
includes information for EMLSR / EMLMR operation.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230504134511.828474-11-gregory.greenman@intel.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Skip the EHT BSS membership selector for getting rates.
While at it, add the definitions for GLK and EPS, and
sort the list.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230504134511.828474-9-gregory.greenman@intel.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Implement proper reconfiguration for interfaces that are
doing MLO, in order to be able to recover from HW restart
correctly.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230504134511.828474-6-gregory.greenman@intel.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Currently, whenever an EMA beacon is formed, due to is_template
argument being false from the caller, the switch count is always
decremented once which is wrong.
Also if switch count is equal to profile periodicity, this makes
the switch count to reach till zero which triggers a WARN_ON_ONCE.
[ 261.593915] CPU: 1 PID: 800 Comm: kworker/u8:3 Not tainted 5.4.213 #0
[ 261.616143] Hardware name: Qualcomm Technologies, Inc. IPQ9574
[ 261.622666] Workqueue: phy0 ath12k_get_link_bss_conf [ath12k]
[ 261.629771] pstate: 60400005 (nZCv daif +PAN -UAO)
[ 261.635595] pc : ieee80211_next_txq+0x1ac/0x1b8 [mac80211]
[ 261.640282] lr : ieee80211_beacon_update_cntdwn+0x64/0xb4 [mac80211]
[...]
[ 261.729683] Call trace:
[ 261.734986] ieee80211_next_txq+0x1ac/0x1b8 [mac80211]
[ 261.737156] ieee80211_beacon_cntdwn_is_complete+0xa28/0x1194 [mac80211]
[ 261.742365] ieee80211_beacon_cntdwn_is_complete+0xef4/0x1194 [mac80211]
[ 261.749224] ieee80211_beacon_get_template_ema_list+0x38/0x5c [mac80211]
[ 261.755908] ath12k_get_link_bss_conf+0xf8/0x33b4 [ath12k]
[ 261.762590] ath12k_get_link_bss_conf+0x390/0x33b4 [ath12k]
[ 261.767881] process_one_work+0x194/0x270
[ 261.773346] worker_thread+0x200/0x314
[ 261.777514] kthread+0x140/0x150
[ 261.781158] ret_from_fork+0x10/0x18
Fix this issue by making the is_template argument as true when fetching
the EMA beacons.
Fixes: bd54f3c290 ("wifi: mac80211: generate EMA beacons in AP mode")
Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Link: https://lore.kernel.org/r/20230531062012.4537-1-quic_adisi@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Don't do link address translation for beacons and probe responses,
this leads to reporting multiple scan list entries for the same AP
(one with the MLD address) which just breaks things.
We might need to extend this in the future for some other (action)
frames that aren't MLD addressed.
Fixes: 42fb9148c0 ("wifi: mac80211: do link->MLD address translation on RX")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230604120651.62adead1b43a.Ifc25eed26ebf3b269f60b1ec10060156d0e7ec0d@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There were two bugs when creating the non-inheritence
element:
1) 'at_extension' needs to be declared outside the loop,
otherwise the value resets every iteration and we
can never really switch properly
2) 'added' never got set to true, so we always cut off
the extension element again at the end of the function
This shows another issue that we might add a list but no
extension list, but we need to make the extension list a
zero-length one in that case.
Fix all these issues. While at it, add a comment explaining
the trim.
Fixes: 81151ce462 ("wifi: mac80211: support MLO authentication/association with one link")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230604120651.3addaa5c4782.If3a78f9305997ad7ef4ba7ffc17a8234c956f613@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We already check that the right iftype capa exists,
but then don't use it. Assign it to a variable so we
can actually use it, and then do that.
Fixes: bac2fd3d75 ("mac80211: remove use of ieee80211_get_he_sta_cap()")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230604120651.0e908e5c5fdd.Iac142549a6144ac949ebd116b921a59ae5282735@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
led_blink_set[_oneshot]()'s delay_on and delay_off function parameters
are pass by reference, so that hw-blink implementations can report
back the actual achieved delays when the values have been rounded
to something the hw supports.
This is really only interesting for the sysfs API / the timer trigger.
Other triggers don't really care about this and none of the callers of
led_trigger_blink[_oneshot]() do anything with the returned delay values.
Change the led_trigger_blink[_oneshot]() delay parameters to pass-by-value,
there are 2 reasons for this:
1. led_cdev->blink_set() may sleep, while led_trigger_blink() may not.
So on hw where led_cdev->blink_set() sleeps the call needs to be deferred
to a workqueue, in which case the actual achieved delays are unknown
(this is a preparation patch for the deferring).
2. Since the callers don't care about the actual achieved delays, allowing
callers to directly pass a value leads to simpler code for most callers.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Tested-by: Yauhen Kharuzhy <jekhor@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Acked-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20230510162234.291439-2-hdegoede@redhat.com
Signed-off-by: Lee Jones <lee@kernel.org>
When we allocate a new channel context, or find an existing one
that is compatible, we currently assign it to a link before its
mindef is updated. This leads to strange situations, especially
in link switching where you switch to an 80 MHz link and expect
it to be active immediately, but the mindef is still configured
to 20 MHz while assigning. Also, it's strange that the chandef
passed to the assign method's argument is wider than the one in
the context.
Fix this by calculating the mindef with the new link considered
before calling the driver.
In particular, this fixes an iwlwifi problem during link switch
where the firmware would assert because the (link) station that
was added for the AP is configured to transmit at a bandwidth
that's wider than the channel context that it's configured on.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230504134511.828474-5-gregory.greenman@intel.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When a chanctx is reserved for a new vif and we recalculate
the minimal definition for it, we need to consider the new
interface it's being reserved for before we assign it, so it
can be used directly with the correct min channel width.
Fix the code to - optionally - consider that, and use that
option just before doing the reassignment.
Also, when considering channel context reservations, we
should only consider the one link we're currently working with.
Change the boolean argument to a link pointer to do that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230504134511.828474-4-gregory.greenman@intel.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There's no need to call ieee80211_recalc_chanctx_min_def()
since it cannot and won't call the driver anyway; just use
_ieee80211_recalc_chanctx_min_def() instead.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230504134511.828474-3-gregory.greenman@intel.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When stopping the AP, there might be a color change in progress. It
should be deactivated here, or the driver might later finalize a color
change on a stopped AP.
Fixes: 5f9404abdf (mac80211: add support for BSS color change)
Signed-off-by: Michael Lee <michael-cy.lee@mediatek.com>
Link: https://lore.kernel.org/r/20230504080441.22958-1-michael-cy.lee@mediatek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We need to set the correct trace variable, otherwise we're
overwriting something else instead and the right one that
we print later is not initialized.
Fixes: b6011960f3 ("mac80211: handle channel frequency offset")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230504134511.828474-2-gregory.greenman@intel.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
'changed' can be OR'ed with BSS_CHANGED_EHT_PUNCTURING which is larger than
an u32.
So, turn 'changed' into an u64 and update ieee80211_set_after_csa_beacon()
accordingly.
In the commit in Fixes, only ieee80211_start_ap() was updated.
Fixes: 2cc25e4b2a ("wifi: mac80211: configure puncturing bitmap")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/e84a3f80fe536787f7a2c7180507efc36cd14f95.1682358088.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Most likely the last -next pull request for v6.4. We have changes all
over. rtw88 now supports SDIO bus and iwlwifi continues to work on
Wi-Fi 7 support. Not much stack changes this time.
Major changes:
cfg80211/mac80211
* fix some Fine Time Measurement (FTM) frames not being bufferable
* flush frames before key removal to avoid potential unencrypted
transmission depending on the hardware design
iwlwifi
* preparation for Wi-Fi 7 EHT and multi-link support
rtw88
* SDIO bus support
* RTL8822BS, RTL8822CS and RTL8821CS SDIO chipset support
rtw89
* framework firmware backwards compatibility
brcmfmac
* Cypress 43439 SDIO support
mt76
* mt7921 P2P support
* mt7996 mesh A-MSDU support
* mt7996 EHT support
* mt7996 coredump support
wcn36xx
* support for pronto v3 hardware
ath11k
* PCIe DeviceTree bindings
* WCN6750: enable SAR support
ath10k
* convert DeviceTree bindings to YAML
-----BEGIN PGP SIGNATURE-----
iQFFBAABCgAvFiEEiBjanGPFTz4PRfLobhckVSbrbZsFAmRCaTURHGt2YWxvQGtl
cm5lbC5vcmcACgkQbhckVSbrbZvcRwf+NcLS4HbmqGZhBxl2LZVZ6AFCBM4ijDlO
pxdMiC4UxT+UApY1/9YXo0VS97M7paDJH+R/g1HcTvvKURHCmsdhYHm+R1MH+/uD
r8RfvJg4VtNnlUpsJh9jxt+e697KP15M7DF0sFlQzdIoTUl13Hp7YhI76zunAbAN
u1FBcVVJiCcJWbLolMzqAeBMUWUEG+GtHF6Zn5kChVU/p1nmwJMPUG3Qvb61a7Yc
BM1pQX8jQ8PBj+VrGPGvqX0BOdbxq0evauYScq2oTOhQ1fzTNWOsI1yI7AwApptR
itwQ2t1UK/C/EWpvWIBSd0nit1uwSx0Zsu/nSZlbKbrvIFwd5XnfwQ==
=Irrd
-----END PGP SIGNATURE-----
Merge tag 'wireless-next-2023-04-21' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
Kalle Valo says:
====================
wireless-next patches for v6.4
Most likely the last -next pull request for v6.4. We have changes all
over. rtw88 now supports SDIO bus and iwlwifi continues to work on
Wi-Fi 7 support. Not much stack changes this time.
Major changes:
cfg80211/mac80211
- fix some Fine Time Measurement (FTM) frames not being bufferable
- flush frames before key removal to avoid potential unencrypted
transmission depending on the hardware design
iwlwifi
- preparation for Wi-Fi 7 EHT and multi-link support
rtw88
- SDIO bus support
- RTL8822BS, RTL8822CS and RTL8821CS SDIO chipset support
rtw89
- framework firmware backwards compatibility
brcmfmac
- Cypress 43439 SDIO support
mt76
- mt7921 P2P support
- mt7996 mesh A-MSDU support
- mt7996 EHT support
- mt7996 coredump support
wcn36xx
- support for pronto v3 hardware
ath11k
- PCIe DeviceTree bindings
- WCN6750: enable SAR support
ath10k
- convert DeviceTree bindings to YAML
* tag 'wireless-next-2023-04-21' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (261 commits)
wifi: rtw88: Update spelling in main.h
wifi: airo: remove ISA_DMA_API dependency
wifi: rtl8xxxu: Simplify setting the initial gain
wifi: rtl8xxxu: Add rtl8xxxu_write{8,16,32}_{set,clear}
wifi: rtl8xxxu: Don't print the vendor/product/serial
wifi: rtw88: Fix memory leak in rtw88_usb
wifi: rtw88: call rtw8821c_switch_rf_set() according to chip variant
wifi: rtw88: set pkg_type correctly for specific rtw8821c variants
wifi: rtw88: rtw8821c: Fix rfe_option field width
wifi: rtw88: usb: fix priority queue to endpoint mapping
wifi: rtw88: 8822c: add iface combination
wifi: rtw88: handle station mode concurrent scan with AP mode
wifi: rtw88: prevent scan abort with other VIFs
wifi: rtw88: refine reserved page flow for AP mode
wifi: rtw88: disallow PS during AP mode
wifi: rtw88: 8822c: extend reserved page number
wifi: rtw88: add port switch for AP mode
wifi: rtw88: add bitmap for dynamic port settings
wifi: rtw89: mac: use regular int as return type of DLE buffer request
wifi: mac80211: remove return value check of debugfs_create_dir()
...
====================
Link: https://lore.kernel.org/r/20230421104726.800BCC433D2@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
It can be really hard to analyse or debug why packets are
going missing in mac80211, so add the needed infrastructure
to use use the new per-subsystem drop reasons.
We actually use two drop reason subsystems here because of
the different handling of frames that are dropped but still
go to monitor for old versions of hostapd, and those that
are just completely unusable (e.g. crypto failed.)
Annotate a few reasons here just to illustrate this, we'll
need to go through and annotate more of them later.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Smatch complains that:
debugfs_hw_add() warn: 'statsd' is an error pointer or valid
Debugfs checks are generally not supposed to be checked for errors
and it is not necessary here.
Just delete the dead code.
Signed-off-by: Yingsha Xu <ysxu@hust.edu.cn>
Reviewed-by: Dongliang Mu <dzm91@hust.edu.cn>
Link: https://lore.kernel.org/r/20230419104548.30124-1-ysxu@hust.edu.cn
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
It is unused and should not be used. In order to avoid limitations in
4-address mode, the driver should always use ieee80211_tx_status_ext for
802.3 frames with a valid sta pointer.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230417133751.79160-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Some drivers like iwlwifi might have per-STA queues, so we
may want to flush/drop just those queues rather than all
when removing a station. Add a separate method for that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When we remove a station, we first make it unreachable,
then we (must) remove its keys, and then remove the
station itself. Depending on the hardware design, if
we have hardware crypto at all, frames still sitting
on hardware queues may then be transmitted without a
valid key, possibly unencrypted or with a fixed key.
Fix this by flushing the queues when removing stations
so this cannot happen.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The checks of whether or not a frame is bufferable were not
taking into account that some action frames aren't, such as
FTM. Check this, which requires some changes to the function
ieee80211_is_bufferable_mmpdu() since we need the whole skb
for the checks now.
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Similar to AP beacon, this enables the basic mesh EHT mode, including
EHT operation IE and the fixed field of EHT operation information IE.
As for the optional part (i.e. preamble puncturing bitmap) will be
added in future patch.
Tested-by: Lian Chen <lian.chen@mediatek.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Link: https://lore.kernel.org/r/1e0ddb9001312451c3e99c4eed2072caf8075f61.1679935259.git.ryder.lee@mediatek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There are a few merge conflicts due to overlapping
fixes and changes, merge wireless/main to fix them.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
clang with W=1 reports
net/mac80211/rc80211_minstrel_ht.c:1711:6: error: variable
'n_supported' set but not used [-Werror,-Wunused-but-set-variable]
int n_supported = 0;
^
This variable is not used so remove it.
Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230325132610.1334820-1-trix@redhat.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Avoid potential data corruption issues caused by uninitialized driver
private data structures.
Reported-by: Brian Coverstone <brian@mainsequence.net>
Fixes: 6a9d1b91f3 ("mac80211: add pre-RCU-sync sta removal driver operation")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230324120924.38412-3-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Adjust the network header to point at the correct payload offset
Fixes: 986e43b19a ("wifi: mac80211: fix receiving A-MSDU frames on mesh interfaces")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230324120924.38412-2-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When forwarding is set to 0, frames are typically sent with ttl=1.
Move the ttl decrement check below the check for local receive in order to
fix packet drops.
Reported-by: Thomas Hühn <thomas.huehn@hs-nordhausen.de>
Reported-by: Nick Hainke <vincent@systemli.org>
Fixes: 986e43b19a ("wifi: mac80211: fix receiving A-MSDU frames on mesh interfaces")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230326151709.17743-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
rx->sta->amsdu_mesh_control is being passed to ieee80211_amsdu_to_8023s
without checking rx->sta. Since it doesn't make sense to accept A-MSDU
packets without a sta, simply add a check earlier.
Fixes: 6e4c0d0460 ("wifi: mac80211: add a workaround for receiving non-standard mesh A-MSDU")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230330090001.60750-2-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Generate EMA beacons, each including MBSSID and RNR elements at a given
index. If number of stored RNR elements is more than the number of
MBSSID elements then add those in every EMA beacon.
Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
Link: https://lore.kernel.org/r/20230323113801.6903-3-quic_alokad@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Commit fe4a6d2db3 ("wifi: mac80211: implement support for yet
another mesh A-MSDU format") expands amsdu_mesh_control list to
multi-line list. However, the expansion triggers Sphinx warning:
Documentation/driver-api/80211/mac80211-advanced:214: ./net/mac80211/sta_info.h:628: WARNING: Unexpected indentation.
Use bullet list instead to fix the warning.
Link: https://lore.kernel.org/linux-next/20230323141548.659479ef@canb.auug.org.au/
Fixes: fe4a6d2db3 ("wifi: mac80211: implement support for yet another mesh A-MSDU format")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add APIs to generate an array of beacons for an EMA AP (enhanced
multiple BSSID advertisements), each including a single MBSSID element.
EMA profile periodicity equals the count of elements.
- ieee80211_beacon_get_template_ema_list() - Generate and return all
EMA beacon templates. Drivers must call ieee80211_beacon_free_ema_list()
to free the memory. No change in the prototype for the existing API,
ieee80211_beacon_get_template(), which should be used for non-EMA AP.
- ieee80211_beacon_get_template_ema_index() - Generate a beacon which
includes the multiple BSSID element at the given index. Drivers can use
this function in a loop until NULL is returned which indicates end of
available MBSSID elements.
- ieee80211_beacon_free_ema_list() - free the memory allocated for the
list of EMA beacon templates.
Modify existing functions ieee80211_beacon_get_ap(),
ieee80211_get_mbssid_beacon_len() and ieee80211_beacon_add_mbssid()
to accept a new parameter for EMA index.
Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
Co-developed-by: John Crispin <john@phrozen.org>
Signed-off-by: John Crispin <john@phrozen.org>
Link: https://lore.kernel.org/r/20221206005040.3177-2-quic_alokad@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If a packet has reached its intended destination, it was bumped to the code
that accepts it, without first checking if a mesh_path needs to be created
based on the discovered source.
Fix this by moving the destination address check further down.
Cc: stable@vger.kernel.org
Fixes: 986e43b19a ("wifi: mac80211: fix receiving A-MSDU frames on mesh interfaces")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230314095956.62085-3-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When ieee80211_select_queue is called for mesh, the sta pointer is usually
NULL, since the nexthop is looked up much later in the tx path.
Explicitly check for unicast address in that case in order to make qos work
again.
Cc: stable@vger.kernel.org
Fixes: 50e2ab3929 ("wifi: mac80211: fix queue selection for mesh/OCB interfaces")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230314095956.62085-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
MT7996 hardware supports mesh A-MSDU subframes in hardware, but uses a
big-endian length field
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Link: https://lore.kernel.org/r/20230314095956.62085-7-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This helps bring down rx CPU usage by avoiding calls to the rx handlers in
the slow path. Supports forwarding and local rx, including A-MSDU.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Link: https://lore.kernel.org/r/20230314095956.62085-6-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Significantly reduces mesh forwarding path CPU usage and enables the
direct use of iTXQ.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Link: https://lore.kernel.org/r/20230314095956.62085-5-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Previously, fast xmit only worked on interface types where initially a
sta lookup is performed, and a cached header can be attached to the sta,
requiring only some fields to be updated at runtime.
This technique is not directly applicable for a mesh device type due
to the dynamic nature of the topology and protocol. There are more
addresses that need to be filled, and there is an extra header with a
dynamic length based on the addressing mode.
Change the code to cache entries contain a copy of the mesh subframe header +
bridge tunnel header, as well as an embedded struct ieee80211_fast_tx, which
contains the information for building the 802.11 header.
Add a mesh specific early fast xmit call, which looks up a cached entry and
adds only the mesh subframe header, before passing it over to the generic
fast xmit code.
To ensure the changes in network are reflected in these cached headers,
flush affected cached entries on path changes, as well as other conditions
that currently trigger a fast xmit check in other modes (key changes etc.)
This code is loosely based on a previous implementation by:
Sriram R <quic_srirrama@quicinc.com>
Cc: Sriram R <quic_srirrama@quicinc.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230314095956.62085-4-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since the sequence number is shared across different tx queues, it needs
to be atomic in order to avoid accidental duplicate assignment
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230314095956.62085-2-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
On newer MediaTek SoCs (e.g. MT7986), WLAN->WLAN or WLAN->Ethernet flows can
be offloaded by the SoC. In order to support that, the .ndo_setup_tc op is
needed.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230321091248.30947-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
ieee80211_handle_wake_tx_queue must not run concurrent multiple times.
It calls ieee80211_txq_schedule_start() and the drivers migrated to iTXQ
do not expect overlapping drv_tx() calls.
This fixes 'c850e31f79f0 ("wifi: mac80211: add internal handler for
wake_tx_queue")', which introduced ieee80211_handle_wake_tx_queue.
Drivers started to use it with 'a790cc3a4fad ("wifi: mac80211: add
wake_tx_queue callback to drivers")'.
But only after fixing an independent bug with
'4444bc2116ae ("wifi: mac80211: Proper mark iTXQs for resumption")'
problematic concurrent calls really happened and exposed the initial
issue.
Fixes: c850e31f79 ("wifi: mac80211: add internal handler for wake_tx_queue")
Reported-by: Thomas Mann <rauchwolke@gmx.net>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217119
Link: https://lore.kernel.org/r/b8efebc6-4399-d0b8-b2a0-66843314616b@leemhuis.info/
Link: https://lore.kernel.org/r/b7445607128a6b9ed7c17fcdcf3679bfaf4aaea.camel@sipsolutions.net>
CC: <stable@vger.kernel.org>
Signed-off-by: Alexander Wetzel <alexander@wetzel-home.de>
Link: https://lore.kernel.org/r/20230314211122.111688-1-alexander@wetzel-home.de
[add missing spin_lock_init() noticed by Felix]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When userspace sets basic rates, it might send us some rates
list that's empty or consists of invalid values only. We're
currently ignoring invalid values and then may end up with a
rates bitmap that's empty, which later results in a warning.
Reject the call if there were no valid rates.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This allows low level drivers to refresh the tx agg session timer, based on
querying stats from the firmware usually. Especially for some mt76 devices
support .net_fill_forward_path would bypass mac80211, which leads to tx BA
session timeout clients that set a timeout in their AddBA response to our
request, even if our request is without a timeout.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Link: https://lore.kernel.org/r/7c3f72eac1c34921cd84a462e60d71e125862152.1676616450.git.ryder.lee@mediatek.com
[slightly clarify commit message, add note about RCU]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The new TLV format enables adding TLVs after the fixed
fields in radiotap, as part of the radiotap header.
Support this and move vendor data to the TLV format,
allowing a reuse of the RX_FLAG_RADIOTAP_VENDOR_DATA as
the new RX_FLAG_RADIOTAP_TLV_AT_END flag.
Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230301115906.b18fd5da8477.I576400ec40a7b35ef97a3b09a99b3a49e9174786@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The return type here should be u64 for the flags, even
if it doesn't matter right now because it doesn't return
any flags that don't fit into u32.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230301115906.d67ccae57d60.Ia4768e547ba8b1deb2b84ce3bbfbe216d5bfff6a@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Given the code in cfg80211, EHT capa cannot be non-NULL when
HE capa is NULL, but it's easier to reason about it if both
are checked and the compiler will likely integrate the check
with the previous one for HE capa anyway.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230301115906.7413d50d23bc.I6fef7484721be9bd5364f64921fc5e9168495f62@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This adds the infrastructure to have netdev specific per-link data both
for mac80211 and the driver in debugfs. For the driver, a new callback
is added which is only used if MLO is supported.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230301115906.fb4c947e4df8.I69b3516ddf4c8a7501b395f652d6063444ecad63@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
While often not needed, this considerably simplifies going from a link
specific bss_config to the vif. This helps with e.g. creating link
specific debugfs entries inside drivers.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230301115906.46f701a10ed5.I20390b2a8165ff222d66585915689206ea93222b@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We should perhaps support this API for MLO, but it's not
clear that it makes sense, in any case then we'd have to
update it to probe the correct BSS.
For now, if it happens, warn only once so that we don't
get flooded with messages if the driver misbehaves and
calls this.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230301115906.1c8499b6fbe6.I1a76a2be3b42ff93904870ac069f0319507adc23@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In case of beacon protection, check if the key was offloaded
to the hardware and in that case set control.hw_key so that
the encryption function will see it and only do the needed
steps that aren't done in hardware.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230301115906.b2becd9a22fb.I6c0b9c50c6a481128ba912a11cb7afc92c4b6da7@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since we remove radiotap from skb data, clear all RX_FLAG_X related
info that indicate info on the skb data.
Also we need to do it only once so remove the clear from cooked_monitor.
Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230301115906.74d3efe19eae.Ie17a35864d2e120f9858516a2e3d3047d83cf805@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Instead of the comment about holding RTNL, which is now wrong,
add a proper lockdep assertion for the wiphy mutex.
Fixes: a05829a722 ("cfg80211: avoid holding the RTNL when calling the driver")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230301115906.84352e46f342.Id90fef8c581cebe19cb30274340cf43885d55c74@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This documentation wasn't added in the original patch,
add it now.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: 6e4c0d0460 ("wifi: mac80211: add a workaround for receiving non-standard mesh A-MSDU")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When we have multiple interfaces receiving the same frame,
such as a multicast frame, one interface might have a sta
and the other not. In this case, link_sta would be set but
not cleared again.
Always set link_sta, so we keep an invariant that link_sta
and sta are either both set or both not set.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There's at least one case in ieee80211_rx_for_interface()
where we might pass &((struct sta_info *)NULL)->sta to it
only to then do container_of(), and then checking the
result for NULL, but checking the result of container_of()
for NULL looks really odd.
Fix this by just passing the struct sta_info * instead.
Fixes: e66b7920aa ("wifi: mac80211: fix initialization of rx->link and rx->link_sta")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The convention for find_first_bit() is 0-based, while ffs()
is 1-based, so this is now off-by-one. I cannot reproduce the
gcc-9 problem, but since the -1 is now removed, I'm hoping it
will still avoid the original issue.
Reported-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Fixes: 1d8d4af434 ("wifi: mac80211: avoid u32_encode_bits() warning")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The ieee80211_accept_frame() function performs a number of early checks
to decide whether or not further processing needs to be done on a frame.
One of those checks is the ieee80211_is_robust_mgmt_frame() function.
It requires to peek into the frame payload, but because defragmentation
does not occur until later on in the receive path, this peek is invalid
for any fragment other than the first one. Also, in this scenario there
is no STA and so the fragmented frame will be dropped later on in the
process and will not reach the upper stack. This can happen with large
action frames at low rates, for example, we see issues with DPP on S1G.
This change will only check if the frame is robust if it's the first
fragment. Invalid fragmented packets will be discarded later after
defragmentation is completed.
Signed-off-by: Gilad Itzkovitch <gilad.itzkovitch@morsemicro.com>
Link: https://lore.kernel.org/r/20221124005336.1618411-1-gilad.itzkovitch@morsemicro.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
gcc-9 triggers a false-postive warning in ieee80211_mlo_multicast_tx()
for u32_encode_bits(ffs(links) - 1, ...), since ffs() can return zero
on an empty bitmask, and the negative argument to u32_encode_bits()
is then out of range:
In file included from include/linux/ieee80211.h:21,
from include/net/cfg80211.h:23,
from net/mac80211/tx.c:23:
In function 'u32_encode_bits',
inlined from 'ieee80211_mlo_multicast_tx' at net/mac80211/tx.c:4437:17,
inlined from 'ieee80211_subif_start_xmit' at net/mac80211/tx.c:4485:3:
include/linux/bitfield.h:177:3: error: call to '__field_overflow' declared with attribute error: value doesn't fit into mask
177 | __field_overflow(); \
| ^~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:197:2: note: in expansion of macro '____MAKE_OP'
197 | ____MAKE_OP(u##size,u##size,,)
| ^~~~~~~~~~~
include/linux/bitfield.h:200:1: note: in expansion of macro '__MAKE_OP'
200 | __MAKE_OP(32)
| ^~~~~~~~~
Newer compiler versions do not cause problems with the zero argument
because they do not consider this a __builtin_constant_p().
It's also harmless since the hweight16() check already guarantees
that this cannot be 0.
Replace the ffs() with an equivalent find_first_bit() check that
matches the later for_each_set_bit() style and avoids the warning.
Fixes: 963d0e8d08 ("wifi: mac80211: optionally implement MLO multicast TX")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20230214132025.1532147-1-arnd@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
MLD address translation should be done only for individually addressed
frames. Otherwise, AAD calculation would be wrong and the decryption
would fail.
Fixes: e66b7920aa ("wifi: mac80211: fix initialization of rx->link and rx->link_sta")
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Link: https://lore.kernel.org/r/20230214101048.792414-1-andrei.otcheretianski@intel.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Non-MLO station frames are dropped in Rx path due to the condition
check in ieee80211_rx_is_valid_sta_link_id(). In multi-link AP scenario,
non-MLO stations try to connect in any of the valid links in the ML AP,
where the station valid_links and link_id params are valid in the
ieee80211_sta object. But ieee80211_rx_is_valid_sta_link_id() always
return false for the non-MLO stations by the assumption taken is
valid_links and link_id are not valid in non-MLO stations object
(ieee80211_sta), this assumption is wrong. Due to this assumption,
non-MLO station frames are dropped which leads to failure in association.
Fix it by removing the condition check and allow the link validation
check for the non-MLO stations.
Fixes: e66b7920aa ("wifi: mac80211: fix initialization of rx->link and rx->link_sta")
Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Link: https://lore.kernel.org/r/20230206160330.1613-1-quic_periyasa@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Stations can update bandwidth/NSS change in
VHT action frame with action type Operating Mode Notification.
(IEEE Std 802.11-2020 - 9.4.1.53 Operating Mode field)
For Operating Mode Notification, an RX NSS change to a value
greater than AP's maximum NSS should not be allowed.
During fuzz testing, by forcefully sending VHT Op. mode notif.
frames from STA with random rx_nss values, it is found that AP
accepts rx_nss values greater that APs maximum NSS instead of
discarding such NSS change.
Hence allow NSS change only up to maximum NSS that is negotiated
and capped to AP's capability during association.
Signed-off-by: Rameshkumar Sundaram <quic_ramess@quicinc.com>
Link: https://lore.kernel.org/r/20230207114146.10567-1-quic_ramess@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
At least ath10k and ath11k supported hardware (maybe more) does not implement
mesh A-MSDU aggregation in a standard compliant way.
802.11-2020 9.3.2.2.2 declares that the Mesh Control field is part of the
A-MSDU header (and little-endian).
As such, its length must not be included in the subframe length field.
Hardware affected by this bug treats the mesh control field as part of the
MSDU data and sets the length accordingly.
In order to avoid packet loss, keep track of which stations are affected
by this and take it into account when converting A-MSDU to 802.3 + mesh control
packets.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230213100855.34315-5-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The current mac80211 mesh A-MSDU receive path fails to parse A-MSDU packets
on mesh interfaces, because it assumes that the Mesh Control field is always
directly after the 802.11 header.
802.11-2020 9.3.2.2.2 Figure 9-70 shows that the Mesh Control field is
actually part of the A-MSDU subframe header.
This makes more sense, since it allows packets for multiple different
destinations to be included in the same A-MSDU, as long as RA and TID are
still the same.
Another issue is the fact that the A-MSDU subframe length field was apparently
accidentally defined as little-endian in the standard.
In order to fix this, the mesh forwarding path needs happen at a different
point in the receive path.
ieee80211_data_to_8023_exthdr is changed to ignore the mesh control field
and leave it in after the ethernet header. This also affects the source/dest
MAC address fields, which now in the case of mesh point to the mesh SA/DA.
ieee80211_amsdu_to_8023s is changed to deal with the endian difference and
to add the Mesh Control length to the subframe length, since it's not covered
by the MSDU length field.
With these changes, the mac80211 will get the same packet structure for
converted regular data packets and unpacked A-MSDU subframes.
The mesh forwarding checks are now only performed after the A-MSDU decap.
For locally received packets, the Mesh Control header is stripped away.
For forwarded packets, a new 802.11 header gets added.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230213100855.34315-4-nbd@nbd.name
[fix fortify build error]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Now that all drivers use iTXQ, it does not make sense to check to drop
tx forwarding packets when the driver has stopped the queues.
fq_codel will take care of dropping packets when the queues fill up
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230213100855.34315-3-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The value of last_rate in ieee80211_sta_rx_stats is degraded from u32 to
u16 after being assigned to rate variable, which causes information loss
in STA_STATS_FIELD_TYPE and later bitfields.
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Link: https://lore.kernel.org/r/20230209110659.25447-1-shayne.chen@mediatek.com
Fixes: 41cbb0f5a2 ("mac80211: add support for HE")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
- Configure the bitmap in link_conf and notify the driver.
- Modify 'change' in ieee80211_start_ap() from u32 to u64 to support
BSS_CHANGED_EHT_PUNCTURING.
- Propagate the bitmap in channel switch events to userspace.
Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
Signed-off-by: Muna Sinada <quic_msinada@quicinc.com>
Link: https://lore.kernel.org/r/20230131001227.25014-5-quic_alokad@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
- Move ieee80211_valid_disable_subchannel_bitmap() from mlme.c to
chan.c, rename it as cfg80211_valid_disable_subchannel_bitmap()
and export it.
- Modify the prototype to include struct cfg80211_chan_def instead
of only bandwidth to support a check which returns false if the
primary channel is punctured.
Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
Link: https://lore.kernel.org/r/20230131001227.25014-2-quic_alokad@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Handle the Puncturing info received from the AP in the
EHT Operation element in beacons.
If the info is invalid:
- during association: disable EHT connection for the AP
- after association: disconnect
This commit includes many (internal) bugfixes and spec
updates various people.
Co-developed-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://lore.kernel.org/r/20230127123930.4fbc74582331.I3547481d49f958389f59dfeba3fcc75e72b0aa6e@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Move color collision report in a dedicated delayed work and do not run
it in interrupt context in order to rate-limit the number of events
reported to userspace. Moreover grab wdev mutex in
ieee80211_color_collision_detection_work routine since it is required
by cfg80211_obss_color_collision_notify().
Tested-by: Nicolas Cavallari <nicolas.cavallari@green-communications.fr>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Fixes: 5f9404abdf ("mac80211: add support for BSS color change")
Link: https://lore.kernel.org/r/3f6cf60c892ad40c1cca4a55d62b1224ef1c6ce9.1674644379.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Somehow an extra 'e' slipped in there without anyone noticing,
drop that from ieeee80211_obss_color_collision_notify().
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add minimal support for RX EHT rate reporting, not yet
adding (modifying) any radiotap headers, just statistics
for cfg80211.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Adding flags for SU Beamformer, SU Beamformee, MU Beamformer and Full
Bandwidth UL MU-MIMO for HE. This is utilized to pass MU-MIMO
configurations from user space to driver in AP mode.
Signed-off-by: Muna Sinada <quic_msinada@quicinc.com>
Link: https://lore.kernel.org/r/1665006886-23874-2-git-send-email-quic_msinada@quicinc.com
[fixed indentation, removed redundant !!]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Adding flags for SU Beamformer, SU Beamformee, MU Beamformer and
MU Beamformee for VHT. This is utilized to pass MU-MIMO
configurations from user space to driver in AP mode.
Signed-off-by: Muna Sinada <quic_msinada@quicinc.com>
Link: https://lore.kernel.org/r/1665006886-23874-1-git-send-email-quic_msinada@quicinc.com
[fixed indentation, removed redundant !!]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Due to the two cherry picked commits from wireless to wireless-next we have
several conflicts in mt76. To avoid any bugs with conflicts merge wireless into
wireless-next.
96f134dc19 wifi: mt76: handle possible mt76_rx_token_consume failures
fe13dad899 wifi: mt76: dma: do not increment queue head if mt76_dma_add_buf fails
This reverts commit acb99b9b2a ("mac80211: Add stations iterator
where the iterator function may sleep"). A different approach was found
for the rtw88 driver where most of the problematic locks were converted
to a driver-local mutex. Drop ieee80211_iterate_stations() because there
are no users of that function.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20221226191609.2934234-1-martin.blumenstingl@googlemail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Instead of preventing adding AP_VLAN to MLO enabled APs, this check was
preventing adding more than one 4-addr AP_VLAN regardless of the MLO status.
Fix this by adding missing extra checks.
Fixes: ae960ee90b ("wifi: mac80211: prevent VLANs on MLDs")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20221214130326.37756-1-nbd@nbd.name
Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When multiple interfaces are present in the local interface
list, new skb copy is taken before rx processing except for
the first interface. The address translation happens each
time only on the original skb since the hdr pointer is not
updated properly to the newly created skb.
As a result frames start to drop in userspace when address
based checks or search fails.
Signed-off-by: Sriram R <quic_srirrama@quicinc.com>
Link: https://lore.kernel.org/r/20221208040050.25922-1-quic_srirrama@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reset multiple BSSID options when all AP related configurations are
reset in ieee80211_stop_ap().
Stale values result in HWSIM test failures (e.g. p2p_group_cli_invalid),
if run after 'he_ap_ema'.
Reported-by: Jouni Malinen <j@w1.fi>
Signed-off-by: Aloka Dixit <quic_alokad@quicinc.com>
Link: https://lore.kernel.org/r/20221221185616.11514-1-quic_alokad@quicinc.com
Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When a running wake_tx_queue() call is aborted due to a hw queue stop
the corresponding iTXQ is not always correctly marked for resumption:
wake_tx_push_queue() can stops the queue run without setting
@IEEE80211_TXQ_STOP_NETIF_TX.
Without the @IEEE80211_TXQ_STOP_NETIF_TX flag __ieee80211_wake_txqs()
will not schedule a new queue run and remaining frames in the queue get
stuck till another frame is queued to it.
Fix the issue for all drivers - also the ones with custom wake_tx_queue
callbacks - by moving the logic into ieee80211_tx_dequeue() and drop the
redundant @txqs_stopped.
@IEEE80211_TXQ_STOP_NETIF_TX is also renamed to @IEEE80211_TXQ_DIRTY to
better describe the flag.
Fixes: c850e31f79 ("wifi: mac80211: add internal handler for wake_tx_queue")
Signed-off-by: Alexander Wetzel <alexander@wetzel-home.de>
Link: https://lore.kernel.org/r/20221230121850.218810-1-alexander@wetzel-home.de
Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Due to several bugs caused by timers being re-armed after they are
shutdown and just before they are freed, a new state of timers was added
called "shutdown". After a timer is set to this state, then it can no
longer be re-armed.
The following script was run to find all the trivial locations where
del_timer() or del_timer_sync() is called in the same function that the
object holding the timer is freed. It also ignores any locations where
the timer->function is modified between the del_timer*() and the free(),
as that is not considered a "trivial" case.
This was created by using a coccinelle script and the following
commands:
$ cat timer.cocci
@@
expression ptr, slab;
identifier timer, rfield;
@@
(
- del_timer(&ptr->timer);
+ timer_shutdown(&ptr->timer);
|
- del_timer_sync(&ptr->timer);
+ timer_shutdown_sync(&ptr->timer);
)
... when strict
when != ptr->timer
(
kfree_rcu(ptr, rfield);
|
kmem_cache_free(slab, ptr);
|
kfree(ptr);
)
$ spatch timer.cocci . > /tmp/t.patch
$ patch -p1 < /tmp/t.patch
Link: https://lore.kernel.org/lkml/20221123201306.823305113@linutronix.de/
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Acked-by: Pavel Machek <pavel@ucw.cz> [ LED ]
Acked-by: Kalle Valo <kvalo@kernel.org> [ wireless ]
Acked-by: Paolo Abeni <pabeni@redhat.com> [ networking ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Third set of patches for v6.2. mt76 has a new driver for mt7996 Wi-Fi 7
devices and iwlwifi also got initial Wi-Fi 7 support. Otherwise
smaller features and fixes.
Major changes:
ath10k
* store WLAN firmware version in SMEM image table
mt76
* mt7996: new driver for MediaTek Wi-Fi 7 (802.11be) devices
* mt7986, mt7915: enable Wireless Ethernet Dispatch (WED) offload support
* mt7915: add ack signal support
* mt7915: enable coredump support
* mt7921: remain_on_channel support
* mt7921: channel context support
iwlwifi
* enable Wi-Fi 7 Extremely High Throughput (EHT) PHY capabilities
* 320 MHz channels support
-----BEGIN PGP SIGNATURE-----
iQFFBAABCgAvFiEEiBjanGPFTz4PRfLobhckVSbrbZsFAmOKcMARHGt2YWxvQGtl
cm5lbC5vcmcACgkQbhckVSbrbZv3cgf+KjlbxtCZvEIfK+jsd2/VK635ucUdC1d5
QZB5SCHyVCqTMEsBBw0WCmFdfnqQRQUE9Qe5s0hlwhyrjLP4FQ6/jGTarFvRV43E
xO8jJd7e4mnVVoQySeKIRfvtYPFKT5GpaDVs4ytfdSs+KYoCE7akMBcvHVO8Fr2M
MepdqyoJakhRybFUJZMts8W8IsBikv9hdnb2Mr/E32JFLeP6ggs9tKCZKBbpxyXk
BzfYkDMXffFl95prlmy4rXP223FjvgUuRNWaatseR7S6A/Ik9Xk3B1qv3mtocPZF
LiTlFtmn3qkgyX5bfm6NRe/2FqgRUYfIrN0XtVw6Sy8WUe1GCf3opA==
=pkqE
-----END PGP SIGNATURE-----
Merge tag 'wireless-next-2022-12-02' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
Kalle Valo says:
====================
wireless-next patches for v6.2
Third set of patches for v6.2. mt76 has a new driver for mt7996 Wi-Fi 7
devices and iwlwifi also got initial Wi-Fi 7 support. Otherwise
smaller features and fixes.
Major changes:
ath10k
- store WLAN firmware version in SMEM image table
mt76
- mt7996: new driver for MediaTek Wi-Fi 7 (802.11be) devices
- mt7986, mt7915: enable Wireless Ethernet Dispatch (WED) offload support
- mt7915: add ack signal support
- mt7915: enable coredump support
- mt7921: remain_on_channel support
- mt7921: channel context support
iwlwifi
- enable Wi-Fi 7 Extremely High Throughput (EHT) PHY capabilities
- 320 MHz channels support
* tag 'wireless-next-2022-12-02' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (144 commits)
wifi: ath10k: fix QCOM_SMEM dependency
wifi: mt76: mt7921e: add pci .shutdown() support
wifi: mt76: mt7915: mmio: fix naming convention
wifi: mt76: mt7996: add support to configure spatial reuse parameter set
wifi: mt76: mt7996: enable ack signal support
wifi: mt76: mt7996: enable use_cts_prot support
wifi: mt76: mt7915: rely on band_idx of mt76_phy
wifi: mt76: mt7915: enable per bandwidth power limit support
wifi: mt76: mt7915: introduce mt7915_get_power_bound()
mt76: mt7915: Fix PCI device refcount leak in mt7915_pci_init_hif2()
wifi: mt76: do not send firmware FW_FEATURE_NON_DL region
wifi: mt76: mt7921: Add missing __packed annotation of struct mt7921_clc
wifi: mt76: fix coverity overrun-call in mt76_get_txpower()
wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices
wifi: mt76: mt76x0: remove dead code in mt76x0_phy_get_target_power
wifi: mt76: mt7915: fix band_idx usage
wifi: mt76: mt7915: enable .sta_set_txpwr support
wifi: mt76: mt7915: add basedband Txpower info into debugfs
wifi: mt76: mt7915: add support to configure spatial reuse parameter set
wifi: mt76: mt7915: add missing MODULE_PARM_DESC
...
====================
Link: https://lore.kernel.org/r/20221202214254.D0D3DC433C1@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
ieee80211_drop_unencrypted is called from ieee80211_rx_h_mesh_fwding and
ieee80211_frame_allowed.
Since ieee80211_rx_h_mesh_fwding can forward packets for other mesh nodes
and is called earlier, it needs to check the decryptions status and if the
packet is using the control protocol on its own, instead of deferring to
the later call from ieee80211_frame_allowed.
Because of that, ieee80211_drop_unencrypted has a mesh specific check
that skips over the mesh header in order to check the payload protocol.
This code is invalid when called from ieee80211_frame_allowed, since that
happens after the 802.11->802.3 conversion.
Fix this by moving the mesh specific check directly into
ieee80211_rx_h_mesh_fwding.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20221201135730.19723-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This can be used to selectively disable feature flags for checksum offload,
scatter/gather or GSO by changing vif->netdev_features.
Removing features from vif->netdev_features does not affect the netdev
features themselves, but instead fixes up skbs in the tx path so that the
offloads are not needed in the driver.
Aside from making it easier to deal with vif type based hardware limitations,
this also makes it possible to optimize performance on hardware without native
GSO support by declaring GSO support in hw->netdev_features and removing it
from vif->netdev_features. This allows mac80211 to handle GSO segmentation
after the sta lookup, but before itxq enqueue, thus reducing the number of
unnecessary sta lookups, as well as some other per-packet processing.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20221010094338.78070-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Updates to the TIM information element to match changes made in the
IEEE Std 802.11ah-2020.
Signed-off-by: Kieran Frewen <kieran.frewen@morsemicro.com>
Co-developed-by: Gilad Itzkovitch <gilad.itzkovitch@morsemicro.com>
Signed-off-by: Gilad Itzkovitch <gilad.itzkovitch@morsemicro.com>
Link: https://lore.kernel.org/r/20221106221602.25714-1-gilad.itzkovitch@morsemicro.com
[use skb_put_data/skb_put_u8]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
It's not valid to have the multiple BSSID element in the
association response (per 802.11 REVme D1.0), so don't
try to parse it there, but only in the fallback beacon
elements if needed.
The other case that was parsing association requests was
already changed in a previous commit.
Change-Id: I659d2ef1253e079cc71c46a017044e116e31c024
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The call to ieee80211_do_stop() right after will also do
synchronize_rcu() to ensure the SDATA_STATE_RUNNING bit
is cleared, so we don't need to synchronize_net() here.
Change-Id: Id9f9ffcf195002013e5d9fde288877d219780864
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
ieee80211_get_txq() can only be called with vif != NULL.
Remove not needed NULL test in function.
Signed-off-by: Alexander Wetzel <alexander@wetzel-home.de>
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Link: https://lore.kernel.org/r/20221107161328.2883-1-alexander@wetzel-home.de
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In ieee80211_lookup_key, the variable named `local` is unused if
compiled without lockdep, getting this warning:
net/mac80211/cfg.c: In function ‘ieee80211_lookup_key’:
net/mac80211/cfg.c:542:26: error: unused variable ‘local’ [-Werror=unused-variable]
struct ieee80211_local *local = sdata->local;
^~~~~
Fix it with __maybe_unused.
Fixes: 8cbf0c2ab6 ("wifi: mac80211: refactor some key code")
Signed-off-by: Íñigo Huguet <ihuguet@redhat.com>
Link: https://lore.kernel.org/r/20221111153622.29016-1-ihuguet@redhat.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The TWT Information Frame Disabled bit of control field of TWT Setup
frame shall be set to 1 since handling TWT Information frame is not
supported by current mac80211 implementation.
Fixes: f5a4c24e68 ("mac80211: introduce individual TWT support in AP mode")
Signed-off-by: Howard Hsu <howard-yh.hsu@mediatek.com>
Link: https://lore.kernel.org/r/20221027015653.1448-1-howard-yh.hsu@mediatek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When trying to transmit an data frame with tx_status to a destination
that have no route in the mesh, then it is dropped without recrediting
the ack_status_frames idr.
Once it is exhausted, wpa_supplicant starts failing to do SAE with
NL80211_CMD_FRAME and logs "nl80211: Frame command failed".
Use ieee80211_free_txskb() instead of kfree_skb() to fix it.
Signed-off-by: Nicolas Cavallari <nicolas.cavallari@green-communications.fr>
Link: https://lore.kernel.org/r/20221027140133.1504-1-nicolas.cavallari@green-communications.fr
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When device is running and the interface status is changed, the gpf issue
is triggered. The problem triggering process is as follows:
Thread A: Thread B
ieee80211_runtime_change_iftype() process_one_work()
... ...
ieee80211_do_stop() ...
... ...
sdata->bss = NULL ...
... ieee80211_subif_start_xmit()
ieee80211_multicast_to_unicast
//!sdata->bss->multicast_to_unicast
cause gpf issue
When the interface status is changed, the sending queue continues to send
packets. After the bss is set to NULL, the bss is accessed. As a result,
this causes a general-protection-fault issue.
The following is the stack information:
general protection fault, probably for non-canonical address
0xdffffc000000002f: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000178-0x000000000000017f]
Workqueue: mld mld_ifc_work
RIP: 0010:ieee80211_subif_start_xmit+0x25b/0x1310
Call Trace:
<TASK>
dev_hard_start_xmit+0x1be/0x990
__dev_queue_xmit+0x2c9a/0x3b60
ip6_finish_output2+0xf92/0x1520
ip6_finish_output+0x6af/0x11e0
ip6_output+0x1ed/0x540
mld_sendpack+0xa09/0xe70
mld_ifc_work+0x71c/0xdb0
process_one_work+0x9bf/0x1710
worker_thread+0x665/0x1080
kthread+0x2e4/0x3a0
ret_from_fork+0x1f/0x30
</TASK>
Fixes: f856373e2f ("wifi: mac80211: do not wake queues on a vif that is being stopped")
Reported-by: syzbot+c6e8fca81c294fd5620a@syzkaller.appspotmail.com
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Link: https://lore.kernel.org/r/20221026063959.177813-1-shaozhengchao@huawei.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Now that the 32bit UP oddity is gone and 32bit uses always a sequence
count, there is no need for the fetch_irq() variants anymore.
Convert to the regular interface.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
First set of patches v6.2. mac80211 refactoring continues for Wi-Fi 7.
All mac80211 driver are now converted to use internal TX queues, this
might cause some regressions so we wanted to do this early in the
cycle.
Note: wireless tree was merged[1] to wireless-next to avoid some
conflicts with mac80211 patches between the trees. Unfortunately there
are still two smaller conflicts in net/mac80211/util.c which Stephen
also reported[2]. In the first conflict initialise scratch_len to
"params->scratch_len ?: 3 * params->len" (note number 3, not 2!) and
in the second conflict take the version which uses elems->scratch_pos.
Git diff output should like this:
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@@ -1506,7 -1648,7 +1650,7 @@@ ieee802_11_parse_elems_full(struct ieee
const struct element *non_inherit = NULL;
u8 *nontransmitted_profile;
int nontransmitted_profile_len = 0;
- size_t scratch_len = params->len;
- size_t scratch_len = params->scratch_len ?: 2 * params->len;
++ size_t scratch_len = params->scratch_len ?: 3 * params->len;
elems = kzalloc(sizeof(*elems) + scratch_len, GFP_ATOMIC);
if (!elems)
[1] https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next.git/commit/?id=dfd2d876b3fda1790bc0239ba4c6967e25d16e91
[2] https://lore.kernel.org/all/20221020032340.5cf101c0@canb.auug.org.au/
Major changes:
mac80211
* preparation for Wi-Fi 7 Multi-Link Operation (MLO) continues
* add API to show the link STAs in debugfs
* all mac80211 drivers are now using mac80211 internal TX queues (iTXQs)
rtw89
* support 8852BE
rtl8xxxu
* support RTL8188FU
brmfmac
* support two station interfaces concurrently
bcma
* support SPROM rev 11
-----BEGIN PGP SIGNATURE-----
iQFFBAABCgAvFiEEiBjanGPFTz4PRfLobhckVSbrbZsFAmNb2KwRHGt2YWxvQGtl
cm5lbC5vcmcACgkQbhckVSbrbZs6hggAqrmgHaiRbPYlLVE0hFVaGeVXslfpK9nj
ZGr3bwG5FpioxjAsI7NfwEwpq+FoxTUigG/SShw1Rr8lw43Nt7E57+5McK3qWdKC
5/WndfChPppjtJUpc6PN+UcmCuhcm4TAyMAojbTe5lJ9cJ4yyOWZChDwah3BVZQk
/tHK4qKq8gpppwgkiJ88VdTVoVv5anIvXHH3lAIteljxk0zkaEM7lIQhIFst/zpX
cu/cWvKz2Rh6vnYjkzl8BcrbW8e0/VwnzWggtWs4/kIuRVnHRrrGwlnsULShOscM
fmK+RI2CbJIMucttUOHOXjCg4wwppSit1rH4xOkcwlvrFa7AvDbdHg==
=Zils
-----END PGP SIGNATURE-----
Kalle Valo says:
====================
pull-request: wireless-next-2022-10-28
First set of patches v6.2. mac80211 refactoring continues for Wi-Fi 7.
All mac80211 driver are now converted to use internal TX queues, this
might cause some regressions so we wanted to do this early in the
cycle.
Note: wireless tree was merged[1] to wireless-next to avoid some
conflicts with mac80211 patches between the trees. Unfortunately there
are still two smaller conflicts in net/mac80211/util.c which Stephen
also reported[2]. In the first conflict initialise scratch_len to
"params->scratch_len ?: 3 * params->len" (note number 3, not 2!) and
in the second conflict take the version which uses elems->scratch_pos.
[1] https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next.git/commit/?id=dfd2d876b3fda1790bc0239ba4c6967e25d16e91
[2] https://lore.kernel.org/all/20221020032340.5cf101c0@canb.auug.org.au/
mac80211
- preparation for Wi-Fi 7 Multi-Link Operation (MLO) continues
- add API to show the link STAs in debugfs
- all mac80211 drivers are now using mac80211 internal TX queues (iTXQs)
rtw89
- support 8852BE
rtl8xxxu
- support RTL8188FU
brmfmac
- support two station interfaces concurrently
bcma
- support SPROM rev 11
====================
Link: https://lore.kernel.org/r/20221028132943.304ECC433B5@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
ieee80211_register_hw free the allocated cipher suites when
registering wiphy fail, and ieee80211_free_hw will re-free it.
set wiphy_ciphers_allocated to false after freeing allocated
cipher suites.
Signed-off-by: taozhang <taozhang@bestechnic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
-----BEGIN PGP SIGNATURE-----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=M+mV
-----END PGP SIGNATURE-----
Merge tag 'random-6.1-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random
Pull more random number generator updates from Jason Donenfeld:
"This time with some large scale treewide cleanups.
The intent of this pull is to clean up the way callers fetch random
integers. The current rules for doing this right are:
- If you want a secure or an insecure random u64, use get_random_u64()
- If you want a secure or an insecure random u32, use get_random_u32()
The old function prandom_u32() has been deprecated for a while
now and is just a wrapper around get_random_u32(). Same for
get_random_int().
- If you want a secure or an insecure random u16, use get_random_u16()
- If you want a secure or an insecure random u8, use get_random_u8()
- If you want secure or insecure random bytes, use get_random_bytes().
The old function prandom_bytes() has been deprecated for a while
now and has long been a wrapper around get_random_bytes()
- If you want a non-uniform random u32, u16, or u8 bounded by a
certain open interval maximum, use prandom_u32_max()
I say "non-uniform", because it doesn't do any rejection sampling
or divisions. Hence, it stays within the prandom_*() namespace, not
the get_random_*() namespace.
I'm currently investigating a "uniform" function for 6.2. We'll see
what comes of that.
By applying these rules uniformly, we get several benefits:
- By using prandom_u32_max() with an upper-bound that the compiler
can prove at compile-time is ≤65536 or ≤256, internally
get_random_u16() or get_random_u8() is used, which wastes fewer
batched random bytes, and hence has higher throughput.
- By using prandom_u32_max() instead of %, when the upper-bound is
not a constant, division is still avoided, because
prandom_u32_max() uses a faster multiplication-based trick instead.
- By using get_random_u16() or get_random_u8() in cases where the
return value is intended to indeed be a u16 or a u8, we waste fewer
batched random bytes, and hence have higher throughput.
This series was originally done by hand while I was on an airplane
without Internet. Later, Kees and I worked on retroactively figuring
out what could be done with Coccinelle and what had to be done
manually, and then we split things up based on that.
So while this touches a lot of files, the actual amount of code that's
hand fiddled is comfortably small"
* tag 'random-6.1-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random:
prandom: remove unused functions
treewide: use get_random_bytes() when possible
treewide: use get_random_u32() when possible
treewide: use get_random_{u8,u16}() when possible, part 2
treewide: use get_random_{u8,u16}() when possible, part 1
treewide: use prandom_u32_max() when possible, part 2
treewide: use prandom_u32_max() when possible, part 1
The prandom_bytes() function has been a deprecated inline wrapper around
get_random_bytes() for several releases now, and compiles down to the
exact same code. Replace the deprecated wrapper with a direct call to
the real function. This was done as a basic find and replace.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Yury Norov <yury.norov@gmail.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu> # powerpc
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
All drivers are now using mac80211 internal queues (iTXQs).
Drop mac80211 internal support for the old push path.
Signed-off-by: Alexander Wetzel <alexander@wetzel-home.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Start to align the TX handling to only use internal TX queues (iTXQs):
Provide a handler for drivers not having a custom wake_tx_queue
callback and update the documentation.
Signed-off-by: Alexander Wetzel <alexander@wetzel-home.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If beacon protection is active but the beacon cannot be
decrypted or is otherwise malformed, we call the cfg80211
API to report this to userspace, but that uses a netdev
pointer, which isn't present for P2P-Device. Fix this to
call it only conditionally to ensure cfg80211 won't crash
in the case of P2P-Device.
This fixes CVE-2022-42722.
Reported-by: Sönke Huster <shuster@seemoo.tu-darmstadt.de>
Fixes: 9eaf183af7 ("mac80211: Report beacon protection failures to user space")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When we parse a multi-BSSID element, we might point some
element pointers into the allocated nontransmitted_profile.
However, we free this before returning, causing UAF when the
relevant pointers in the parsed elements are accessed.
Fix this by not allocating the scratch buffer separately but
as part of the returned structure instead, that way, there
are no lifetime issues with it.
The scratch buffer introduction as part of the returned data
here is taken from MLO feature work done by Ilan.
This fixes CVE-2022-42719.
Fixes: 5023b14cf4 ("mac80211: support profile split between elements")
Co-developed-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Per spec, the maximum value for the MaxBSSID ('n') indicator is 8,
and the minimum is 1 since a multiple BSSID set with just one BSSID
doesn't make sense (the # of BSSIDs is limited by 2^n).
Limit this in the parsing in both cfg80211 and mac80211, rejecting
any elements with an invalid value.
This fixes potentially bad shifts in the processing of these inside
the cfg80211_gen_new_bssid() function later.
I found this during the investigation of CVE-2022-41674 fixed by the
previous patch.
Fixes: 0b8fb8235b ("cfg80211: Parsing of Multiple BSSID information in scanning")
Fixes: 78ac51f815 ("mac80211: support multi-bssid")
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Remove unused has_mrr (has multi-rate retry capabilities) member
from struct minstrel_priv (only set once in minstrel_ht_alloc, never
used again).
Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This should of course be CONFIG_, not CPTCFG_, which is an
artifact from working with backports.
Fixes: 9dd1953846 ("wifi: nl80211/mac80211: clarify link ID in control port TX")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
HE added support for dynamic fragmentation inside aggregation
sessions, but no existing driver ever advertises it. Thus,
remove the code for now, it cannot work as-is in MLO. For it
to properly work in MLO, we'd need to validate that the frag
level is identical across all the link bands/iftypes, which
is a good amount of complex code that's just not worth it as
long as no driver has support for it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If the deflink of the station is on 6 GHz, then it won't have HT.
If at the same time we're using MLO, then vif.bss_conf isn't used,
and thus vif.bss_conf.chandef.chan is NULL, causing the code to
crash.
Fix this by just checking for both HT and HE, and refusing the
aggregation session if both are not present. This might be a bit
wrong since it would accept an aggregation session from a peer
that has HE but no HT on 2.4 or 5 GHz, but such a peer shouldn't
exist in the first place, and it probably supports aggregation if
it has HE support.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This won't work right at least with the code as it is, so
at least for now just assume it's never set for MLO. It may
very well never change, almost no drivers support it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Fix the code that sets the DTIM period to always propagate it
into link->conf->dtim_period and not overwrite it, while still
preferring to set it from the beacon data if available.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If the station has no HT, we deny the aggregation session
but the error message talks about QoS; change it to say HT
instead.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Ensure that the link ID matches in auth/assoc continuation,
otherwise we need to reset all the data.
Fixes: 81151ce462 ("wifi: mac80211: support MLO authentication/association with one link")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If association to an AP without a link 0 fails, then we crash in
tracing because it assumes that either ap_mld_addr or link 0 BSS
is valid, since we clear sdata->vif.valid_links and then don't
add the ap_mld_addr to the struct.
Since we clear also sdata->vif.cfg.ap_addr, keep a local copy of
it and assign it earlier, before clearing valid_links, to fix
this.
Fixes: 81151ce462 ("wifi: mac80211: support MLO authentication/association with one link")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since this frame is addressed from/to an MLD, it should be
built with the correct AP MLD address (in station mode) to
be encrypted properly.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If any driver relies entirely on the scan request BSSID,
then that would be wrong for internal scans. Initialize
it to the broadcast address since we don't otherwise use
the field.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Currently, we rely only on the AP capability. If the AP supports
TWT responder we will advertise TWT requester even if the driver
or HW doesn't support it. Fix this by checking the HW capability.
Signed-off-by: Haim Dreyfuss <haim.dreyfuss@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We should set the parameters here per link, except
unfortunately ap_isolate, but we can't really change
that anymore so it'll remain a quirk in the API in
that you need to change it on one of the valid links
and it'll apply to all.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This management frame is intended for the MLD so we
treat it in mac80211 as MLD addressed as well, and
should therefore use the MLD address of the AP for
the BSSID field in the frame, address translation
applies.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We use this to look up the destination station, so it
needs to be the MLD address of the AP for an MLO; use
ap_addr instead of the BSSID.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In case the AP returned a non success status for one of the links,
do not activate the link.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When processing an association response frame for a Multi-Link
connection, extract the per station profile for each additional
link, and use it for parsing the link elements.
As the Multi-Link element might be fragmented, add support for
reassembling a fragmented element. To simplify memory management
logic, extend 'struct ieee802_11_elems' to hold a scratch buffer,
which is used for the defragmentation. Once an element is
reconstructed in the scratch area, point the corresponding element
pointer to it. Currently only defragmentation of Multi-Link element
and the contained per-STA profile subelement is supported.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
During link switching, the active links change, so we need to
recalculate the aggregate data in the stations.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add the link address to the per-link information, but only if we are
using MLO.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Create debugfs data per-link. For drivers, there is a new operation
link_sta_add_debugfs which will always be called.
For non-MLO, the station directory will be used directly rather than
creating a corresponding subdirectory. As such, non-MLO drivers can
simply continue to create the data from sta_debugfs_add.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
[add missing inlines if !CONFIG_MAC80211_DEBUGFS]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
While often not needed, this considerably simplifies going from a link
to the STA. This helps in cases such as debugfs where a single pointer
should allow accessing a specific link and the STA.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Properly handle TX stop for internal queues (iTXQs) within mac80211.
mac80211 must not stop netdev queues when using mac80211 iTXQs.
For these drivers the netdev interface is created with IFF_NO_QUEUE.
While netdev still drops frames for IFF_NO_QUEUE interfaces when we stop
the netdev queues, it also prints a warning when this happens:
Assuming the mac80211 interface is called wlan0 we would get
"Virtual device wlan0 asks to queue packet!" when netdev has to drop a
frame.
This patch is keeping the harmless netdev queue starts for iTXQ drivers.
Signed-off-by: Alexander Wetzel <alexander@wetzel-home.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since AP_VLAN interfaces are not passed to the driver, check offload_flags
on the bss vif instead.
Reported-by: Howard Hsu <howard-yh.hsu@mediatek.com>
Fixes: 80a915ec44 ("mac80211: add rx decapsulation offload support")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Unlock before returning -EOPNOTSUPP.
Fixes: 3c06e91b40 ("wifi: mac80211: Support POWERED_ADDR_CHANGE feature")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
At some point a few kernel debug prints started appearing which
indicated something was sending invalid IEs:
"bad VHT capabilities, disabling VHT"
"Invalid HE elem, Disable HE"
Turns out these were being printed because the local hardware
supported HE/VHT but the peer/AP did not. Bad/invalid indicates,
to me at least, that the IE is in some way malformed, not missing.
For the HE print (ieee80211_verify_peer_he_mcs_support) it will
now silently fail if the HE capability element is missing (still
prints if the element size is wrong).
For the VHT print, it has been removed completely and will silently
set the DISABLE_VHT flag which is consistent with how DISABLE_HT
is set.
Signed-off-by: James Prestwood <prestwoj@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When building the probe request IEs HE support is checked for
the 6GHz band (wiphy->bands[NL80211_BAND_6GHZ]). If supported
the HE capability IE should be included according to the spec.
The problem is the 16-bit capability is obtained from the
band object (sband) that was passed in, not the 6GHz band
object (sband6). If the sband object doesn't support HE it will
result in a warning.
Fixes: 7d29bc50b3 ("mac80211: always include HE 6GHz capability in probe request")
Signed-off-by: James Prestwood <prestwoj@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since STP TCN frames are only 7 bytes, the pskb_may_pull call returns an error.
Instead of dropping those packets, bump them back to the slow path for proper
processing.
Fixes: 49ddf8e6e2 ("mac80211: add fast-rx path")
Reported-by: Chad Monroe <chad.monroe@smartrg.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Few stack changes and lots of driver changes in this round. brcmfmac
has more activity as usual and it gets new hardware support. ath11k
improves WCN6750 support and also other smaller features. And of
course changes all over.
Note: in early September wireless tree was merged to wireless-next to
avoid some conflicts with mac80211 patches, this shouldn't cause any
problems but wanted to mention anyway.
Major changes:
mac80211
* refactoring and preparation for Wi-Fi 7 Multi-Link Operation (MLO)
feature continues
brcmfmac
* support CYW43439 SDIO chipset
* support BCM4378 on Apple platforms
* support CYW89459 PCIe chipset
rtw89
* more work to get rtw8852c supported
* P2P support
* support for enabling and disabling MSDU aggregation via nl80211
mt76
* tx status reporting improvements
ath11k
* cold boot calibration support on WCN6750
* Target Wake Time (TWT) debugfs support for STA interface
* support to connect to a non-transmit MBSSID AP profile
* enable remain-on-channel support on WCN6750
* implement SRAM dump debugfs interface
* enable threaded NAPI on all hardware
* WoW support for WCN6750
* support to provide transmit power from firmware via nl80211
* support to get power save duration for each client
* spectral scan support for 160 MHz
wcn36xx
* add SNR from a received frame as a source of system entropy
-----BEGIN PGP SIGNATURE-----
iQFFBAABCgAvFiEEiBjanGPFTz4PRfLobhckVSbrbZsFAmM3BGYRHGt2YWxvQGtl
cm5lbC5vcmcACgkQbhckVSbrbZuR3Af/XiuMlnDB6flq+M/kQHLWWvHybLw5aCJ7
l3yXhNFWxpBl2hQXtj17JSjVCYQmxbfrgRqhbNhyACO25bpymCb5QctB9X+Y7TwL
250JmuKvQfFx5oJNRfJ67dKTf3raloQYbdEMJNqySgebL+eSfrDskc9vaCLVDmCK
I994fl0Q1wUbJ6fbuIFd07ti8ay6UlSS/iakv4+nEeimabtZWJWlXBWYRpKpikdP
h9z2kPtss6yz6seaQuw6ny+qysYLi11Tp+Cued9XR3dWOOhB2X1tLHH0H02xPw76
9OJZEJHycP2juxjMfAaktHY+VX36GPLsMLUTVusH0h/Fdy3VG8YSAw==
=emmG
-----END PGP SIGNATURE-----
Merge tag 'wireless-next-2022-09-30' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
Kalle Valo says:
====================
wireless-next patches for v6.1
Few stack changes and lots of driver changes in this round. brcmfmac
has more activity as usual and it gets new hardware support. ath11k
improves WCN6750 support and also other smaller features. And of
course changes all over.
Note: in early September wireless tree was merged to wireless-next to
avoid some conflicts with mac80211 patches, this shouldn't cause any
problems but wanted to mention anyway.
Major changes:
mac80211
- refactoring and preparation for Wi-Fi 7 Multi-Link Operation (MLO)
feature continues
brcmfmac
- support CYW43439 SDIO chipset
- support BCM4378 on Apple platforms
- support CYW89459 PCIe chipset
rtw89
- more work to get rtw8852c supported
- P2P support
- support for enabling and disabling MSDU aggregation via nl80211
mt76
- tx status reporting improvements
ath11k
- cold boot calibration support on WCN6750
- Target Wake Time (TWT) debugfs support for STA interface
- support to connect to a non-transmit MBSSID AP profile
- enable remain-on-channel support on WCN6750
- implement SRAM dump debugfs interface
- enable threaded NAPI on all hardware
- WoW support for WCN6750
- support to provide transmit power from firmware via nl80211
- support to get power save duration for each client
- spectral scan support for 160 MHz
wcn36xx
- add SNR from a received frame as a source of system entropy
* tag 'wireless-next-2022-09-30' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (231 commits)
wifi: rtl8xxxu: Improve rtl8xxxu_queue_select
wifi: rtl8xxxu: Fix AIFS written to REG_EDCA_*_PARAM
wifi: rtl8xxxu: gen2: Enable 40 MHz channel width
wifi: rtw89: 8852b: configure DLE mem
wifi: rtw89: check DLE FIFO size with reserved size
wifi: rtw89: mac: correct register of report IMR
wifi: rtw89: pci: set power cut closed for 8852be
wifi: rtw89: pci: add to do PCI auto calibration
wifi: rtw89: 8852b: implement chip_ops::{enable,disable}_bb_rf
wifi: rtw89: add DMA busy checking bits to chip info
wifi: rtw89: mac: define DMA channel mask to avoid unsupported channels
wifi: rtw89: pci: mask out unsupported TX channels
iwlegacy: Replace zero-length arrays with DECLARE_FLEX_ARRAY() helper
ipw2x00: Replace zero-length array with DECLARE_FLEX_ARRAY() helper
wifi: iwlwifi: Track scan_cmd allocation size explicitly
brcmfmac: Remove the call to "dtim_assoc" IOVAR
brcmfmac: increase dcmd maximum buffer size
brcmfmac: Support 89459 pcie
brcmfmac: increase default max WOWL patterns to 16
cw1200: fix incorrect check to determine if no element is found in list
...
====================
Link: https://lore.kernel.org/r/20220930150413.A7984C433D6@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
pskb_may_pull already contains all of the checks performed by
pskb_pull.
Use pskb_may_pull for validation in pskb_pull, eliminating the
duplication and making __pskb_pull obsolete.
Replace __pskb_pull with pskb_pull where applicable.
Signed-off-by: Richard Gobert <richardbgobert@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 6911458dc4 ("wifi: mac80211: mlme: refactor assoc success
handling") moved the per-link setup out of ieee80211_assoc_success() into a
new function ieee80211_assoc_config_link() but missed to remove the unlock
of 'sta_mtx' in case of HE capability/operation missing on HE AP, which
leads to a double unlock:
ieee80211_assoc_success() {
...
ieee80211_assoc_config_link() {
...
if (!(link->u.mgd.conn_flags & IEEE80211_CONN_DISABLE_HE) &&
(!elems->he_cap || !elems->he_operation)) {
mutex_unlock(&sdata->local->sta_mtx);
...
}
...
}
...
mutex_unlock(&sdata->local->sta_mtx);
...
}
Fixes: 6911458dc4 ("wifi: mac80211: mlme: refactor assoc success handling")
Signed-off-by: Rafael Mendonca <rafaelmendsr@gmail.com>
Link: https://lore.kernel.org/r/20220925143420.784975-1-rafaelmendsr@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Commit 98b0b46746 ("wifi: mac80211: mlme: use correct link_sta")
switched to link station instead of deflink and added some checks to do
that, which are done with the 'sta_mtx' mutex held. However, the error
path of these checks does not unlock 'sta_mtx' before returning.
Fixes: 98b0b46746 ("wifi: mac80211: mlme: use correct link_sta")
Signed-off-by: Rafael Mendonca <rafaelmendsr@gmail.com>
Link: https://lore.kernel.org/r/20220924184042.778676-1-rafaelmendsr@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
During our testing of WFM200 module over SDIO on i.MX6Q-based platform,
we discovered a memory corruption on the system, tracing back to the wfx
driver. Using kfence, it was possible to trace it back to the root
cause, which is hw->max_rates set to 8 in wfx_init_common,
while the maximum defined by IEEE80211_TX_TABLE_SIZE is 4.
This causes array out-of-bounds writes during updates of the rate table,
as seen below:
BUG: KFENCE: memory corruption in kfree_rcu_work+0x320/0x36c
Corrupted memory at 0xe0a4ffe0 [ 0x03 0x03 0x03 0x03 0x01 0x00 0x00
0x02 0x02 0x02 0x09 0x00 0x21 0xbb 0xbb 0xbb ] (in kfence-#81):
kfree_rcu_work+0x320/0x36c
process_one_work+0x3ec/0x920
worker_thread+0x60/0x7a4
kthread+0x174/0x1b4
ret_from_fork+0x14/0x2c
0x0
kfence-#81: 0xe0a4ffc0-0xe0a4ffdf, size=32, cache=kmalloc-64
allocated by task 297 on cpu 0 at 631.039555s:
minstrel_ht_update_rates+0x38/0x2b0 [mac80211]
rate_control_tx_status+0xb4/0x148 [mac80211]
ieee80211_tx_status_ext+0x364/0x1030 [mac80211]
ieee80211_tx_status+0xe0/0x118 [mac80211]
ieee80211_tasklet_handler+0xb0/0xe0 [mac80211]
tasklet_action_common.constprop.0+0x11c/0x148
__do_softirq+0x1a4/0x61c
irq_exit+0xcc/0x104
call_with_stack+0x18/0x20
__irq_svc+0x80/0xb0
wq_worker_sleeping+0x10/0x100
wq_worker_sleeping+0x10/0x100
schedule+0x50/0xe0
schedule_timeout+0x2e0/0x474
wait_for_completion+0xdc/0x1ec
mmc_wait_for_req_done+0xc4/0xf8
mmc_io_rw_extended+0x3b4/0x4ec
sdio_io_rw_ext_helper+0x290/0x384
sdio_memcpy_toio+0x30/0x38
wfx_sdio_copy_to_io+0x88/0x108 [wfx]
wfx_data_write+0x88/0x1f0 [wfx]
bh_work+0x1c8/0xcc0 [wfx]
process_one_work+0x3ec/0x920
worker_thread+0x60/0x7a4
kthread+0x174/0x1b4
ret_from_fork+0x14/0x2c 0x0
After discussion on the wireless mailing list it was clarified
that the issue has been introduced by:
commit ee0e16ab75 ("mac80211: minstrel_ht: fill all requested rates")
and fix shall be in minstrel_ht_update_rates in rc80211_minstrel_ht.c.
Fixes: ee0e16ab75 ("mac80211: minstrel_ht: fill all requested rates")
Link: https://lore.kernel.org/all/12e5adcd-8aed-f0f7-70cc-4fb7b656b829@camlingroup.com/
Link: https://lore.kernel.org/linux-wireless/20220915131445.30600-1-lech.perczak@camlingroup.com/
Cc: Jérôme Pouiller <jerome.pouiller@silabs.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Peter Seiderer <ps.report@gmx.net>
Cc: Kalle Valo <kvalo@kernel.org>
Cc: Krzysztof Drobiński <krzysztof.drobinski@camlingroup.com>,
Signed-off-by: Paweł Lenkow <pawel.lenkow@camlingroup.com>
Signed-off-by: Lech Perczak <lech.perczak@camlingroup.com>
Reviewed-by: Peter Seiderer <ps.report@gmx.net>
Reviewed-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Acked-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Commit 10cb8e6175 ("mac80211: enable QoS support for nl80211 ctrl port")
changed ieee80211_tx_control_port() to aways call
__ieee80211_select_queue() without checking local->hw.queues.
__ieee80211_select_queue() returns a queue-id between 0 and 3, which means
that now ieee80211_tx_control_port() may end up setting the queue-mapping
for a skb to a value higher then local->hw.queues if local->hw.queues
is less then 4.
Specifically this is a problem for ralink rt2500-pci cards where
local->hw.queues is 2. There this causes rt2x00queue_get_tx_queue() to
return NULL and the following error to be logged: "ieee80211 phy0:
rt2x00mac_tx: Error - Attempt to send packet over invalid queue 2",
after which association with the AP fails.
Other callers of __ieee80211_select_queue() skip calling it when
local->hw.queues < IEEE80211_NUM_ACS, add the same check to
ieee80211_tx_control_port(). This fixes ralink rt2500-pci and
similar cards when less then 4 tx-queues no longer working.
Fixes: 10cb8e6175 ("mac80211: enable QoS support for nl80211 ctrl port")
Cc: Markus Theil <markus.theil@tu-ilmenau.de>
Suggested-by: Stanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220918192052.443529-1-hdegoede@redhat.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Make sure local->queue_stop_reasons and vif.txqs_stopped stay in sync.
When a new vif is created the queues may end up in an inconsistent state
and be inoperable:
Communication not using iTXQ will work, allowing to e.g. complete the
association. But the 4-way handshake will time out. The sta will not
send out any skbs queued in iTXQs.
All normal attempts to start the queues will fail when reaching this
state.
local->queue_stop_reasons will have marked all queues as operational but
vif.txqs_stopped will still be set, creating an inconsistent internal
state.
In reality this seems to be race between the mac80211 function
ieee80211_do_open() setting SDATA_STATE_RUNNING and the wake_txqs_tasklet:
Depending on the driver and the timing the queues may end up to be
operational or not.
Cc: stable@vger.kernel.org
Fixes: f856373e2f ("wifi: mac80211: do not wake queues on a vif that is being stopped")
Signed-off-by: Alexander Wetzel <alexander@wetzel-home.de>
Acked-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20220915130946.302803-1-alexander@wetzel-home.de
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
ieee80211_txq_purge() calls fq_tin_reset() and
ieee80211_purge_tx_queue(); Both are then calling
ieee80211_free_txskb(). Which can decide to TX the skb again.
There are at least two ways to get a deadlock:
1) When we have a TDLS teardown packet queued in either tin or frags
ieee80211_tdls_td_tx_handle() will call ieee80211_subif_start_xmit()
while we still hold fq->lock. ieee80211_txq_enqueue() will thus
deadlock.
2) A variant of the above happens if aggregation is up and running:
In that case ieee80211_iface_work() will deadlock with the original
task: The original tasks already holds fq->lock and tries to get
sta->lock after kicking off ieee80211_iface_work(). But the worker
can get sta->lock prior to the original task and will then spin for
fq->lock.
Avoid these deadlocks by not sending out any skbs when called via
ieee80211_free_txskb().
Signed-off-by: Alexander Wetzel <alexander@wetzel-home.de>
Link: https://lore.kernel.org/r/20220915124120.301918-1-alexander@wetzel-home.de
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
drivers/net/ethernet/freescale/fec.h
7d650df99d ("net: fec: add pm_qos support on imx6q platform")
40c79ce13b ("net: fec: add stop mode support for imx8 platform")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Implement an API function and debugfs file to switch
active links.
Also provide an async version of the API so drivers
can call it in arbitrary contexts, e.g. while in the
authorized callback.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The A-MSDU data needs to be stored per-link and aggregated into a single
value for the station. Add a new struct ieee_80211_sta_aggregates in
order to store this data and a new function
ieee80211_sta_recalc_aggregates to update the current data for the STA.
Note that in the non MLO case the pointer in ieee80211_sta will directly
reference the data in deflink.agg, which means that recalculation may be
skipped in that case.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add macros (and an exported function) to allow checking some
link RCU protected accesses that are happening in callbacks
from mac80211 and are thus under the correct lock.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add a link_id parameter to ieee80211_nullfunc_get() to be
able to obtain a correctly addressed frame.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add a new API function ieee80211_find_sta_by_link_addrs()
that looks up the STA and link ID based on interface and
station link addresses.
We're going to use it for mac80211-hwsim to track on the
AP side which links are active.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In order to let the driver select active links and properly
make multi-link connections, as a first step isolate the
driver from inactive links, and set the active links to be
only the association link for client-side interfaces. For
AP side nothing changes since APs always have to have all
their links active.
To simplify things, update the for_each_sta_active_link()
API to include the appropriate vif pointer.
This also implies not allocating a chanctx for an inactive
link, which requires a few more changes.
Since we now no longer try to program multiple links to the
driver, remove the check in the MLME code.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The SMPS power save mode needs to be per-link rather than being shared
for all links. As such, move it into struct ieee80211_link_sta.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Use rx->link_sta everywhere instead of accessing the default link.
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Now that we have a link_sta pointer in the rx struct
we also need to fill it in all the cases. It didn't
matter so much until now as we weren't using it, but
the code should really be able to assume that if the
rx.sta is set, so is rx.link_sta.
Fixes: ccdde7c74f ("wifi: mac80211: properly implement MLO key handling")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
- rtw89: large update across the map, e.g. coex, pci(e), etc.
- ath9k: uninit memory read fix
- ath10k: small peer map fix and a WCN3990 device fix
- wfx: underflow
stack
- the "change MAC address while IFF_UP" change from James
we discussed
- more MLO work, including a set of fixes for the previous
code, now that we have more code we can exercise it more
- prevent some features with MLO that aren't ready yet
(AP_VLAN and 4-address connections)
-----BEGIN PGP SIGNATURE-----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=7imA
-----END PGP SIGNATURE-----
Merge tag 'wireless-next-2022-09-03' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
Johannes Berg says:
====================
drivers
- rtw89: large update across the map, e.g. coex, pci(e), etc.
- ath9k: uninit memory read fix
- ath10k: small peer map fix and a WCN3990 device fix
- wfx: underflow
stack
- the "change MAC address while IFF_UP" change from James
we discussed
- more MLO work, including a set of fixes for the previous
code, now that we have more code we can exercise it more
- prevent some features with MLO that aren't ready yet
(AP_VLAN and 4-address connections)
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
- fix DMA from stack in wilc1000 driver
- fix crash on chip reset failure in mt7921e
- fix for the reported warning on aggregation timer expiry
- check packet lengths in hwsim virtio paths
- fix compiler warnings/errors with AAD construction by
using struct_group
- fix Intel 4965 driver rate scale operation
- release channel contexts correctly in mac80211 mlme code
-----BEGIN PGP SIGNATURE-----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=GyC3
-----END PGP SIGNATURE-----
Merge tag 'wireless-2022-09-03' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless
Johannes berg says:
====================
We have a handful of fixes:
- fix DMA from stack in wilc1000 driver
- fix crash on chip reset failure in mt7921e
- fix for the reported warning on aggregation timer expiry
- check packet lengths in hwsim virtio paths
- fix compiler warnings/errors with AAD construction by
using struct_group
- fix Intel 4965 driver rate scale operation
- release channel contexts correctly in mac80211 mlme code
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Currently, other paths calling drv_sta_state() hold the mutex
and therefore drivers can assume that, and look at links with
that protection. Fix that for the reconfig path as well; to
do it more easily use ieee80211_reconfig_stations() for the
AP/AP_VLAN station reconfig as well.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When we stop a not-yet-started scan, we erroneously call
into the driver, causing a sequence of sw_scan_start()
followed by sw_scan_complete() twice. This will cause a
warning in hwsim with next in line commit that validates
the address passed to wmediumd/virtio. Fix this by doing
the calls only if we were actually scanning.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Right now, we assign the link address only after we add
the link to the driver, which is quite obviously wrong.
It happens to work in many cases because it gets updated
immediately, and then link_conf updates may update it,
but it's clearly not really right.
Set the link address during ieee80211_mgd_setup_link()
so it's set before telling the driver about the link.
Fixes: 81151ce462 ("wifi: mac80211: support MLO authentication/association with one link")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We probably should've done that originally, we already have
about 300 lines of code there, and will add more. Move all
the link code we wrote to a new file.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We don't need the sdata argument, and it doesn't make any
sense for a direct conversion from one value to another,
so just remove the argument
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Adds support in mac80211 for NL80211_EXT_FEATURE_POWERED_ADDR_CHANGE.
The motivation behind this functionality is to fix limitations of
address randomization on frequencies which are disallowed in world
roaming.
The way things work now, if a client wants to randomize their address
per-connection it must power down the device, change the MAC, and
power back up. Here lies a problem since powering down the device
may result in frequencies being disabled (until the regdom is set).
If the desired BSS is on one such frequency the client is unable to
connect once the phy is powered again.
For mac80211 based devices changing the MAC while powered is possible
but currently disallowed (-EBUSY). This patch adds some logic to
allow a MAC change while powered by removing the interface, changing
the MAC, and adding it again. mac80211 will advertise support for
this feature so userspace can determine the best course of action e.g.
disallow address randomization on certain frequencies if not
supported.
There are certain limitations put on this which simplify the logic:
- No active connection
- No offchannel work, including scanning.
Signed-off-by: James Prestwood <prestwoj@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We sometimes copy all the addresses from the 802.11 header
for the AAD, which may cause complaints from fortify checks.
Use struct_group() to avoid the compiler warnings/errors.
Change-Id: Ic3ea389105e7813b22095b295079eecdabde5045
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If we hit an authentication or association timeout, we only
release the chanctx for the deflink, and the other link(s)
are released later by ieee80211_vif_set_links(), but we're
not locking this correctly.
Fix the locking here while releasing the channels and links.
Change-Id: I9e08c1a5434592bdc75253c1abfa6c788f9f39b1
Fixes: 81151ce462 ("wifi: mac80211: support MLO authentication/association with one link")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In the prep_channel error case we didn't release the deflink
channel leaving it to be left around. Fix that.
Change-Id: If0dfd748125ec46a31fc6045a480dc28e03723d2
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The rx data link pointer isn't set from the RX aggregation timer,
resulting in a later warning. Fix that by setting it to the first
valid link for now, with a FIXME to worry about statistics later,
it's not very important since it's just the timeout case.
Reported-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/498d714c-76be-9d04-26db-a1206878de5e@redhat.com
Fixes: 56057da456 ("wifi: mac80211: rx: track link in RX data")
Signed-off-by: Mukesh Sisodiya <mukesh.sisodiya@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
On 32bit-UP u64_stats_fetch_begin() disables only preemption. If the
reader is in preemptible context and the writer side
(u64_stats_update_begin*()) runs in an interrupt context (IRQ or
softirq) then the writer can update the stats during the read operation.
This update remains undetected.
Use u64_stats_fetch_begin_irq() to ensure the stats fetch on 32bit-UP
are not interrupted by a writer. 32bit-SMP remains unaffected by this
change.
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Catherine Sullivan <csully@google.com>
Cc: David Awogbemila <awogbemila@google.com>
Cc: Dimitris Michailidis <dmichail@fungible.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Jeroen de Borst <jeroendb@google.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Simon Horman <simon.horman@corigine.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: oss-drivers@corigine.com
Cc: stable@vger.kernel.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
* rtw88: operation, locking, warning, and code style fixes
* rtw89: small updates
* cfg80211/mac80211: more EHT/MLO (802.11be, WiFi 7) work
* brcmfmac: a couple of fixes
* misc cleanups etc.
-----BEGIN PGP SIGNATURE-----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=J5Fc
-----END PGP SIGNATURE-----
Merge tag 'wireless-next-2022-08-26-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
Johannes berg says:
====================
Various updates:
* rtw88: operation, locking, warning, and code style fixes
* rtw89: small updates
* cfg80211/mac80211: more EHT/MLO (802.11be, WiFi 7) work
* brcmfmac: a couple of fixes
* misc cleanups etc.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Follow the advice of the below link and prefer 'strscpy' in this
subsystem. Conversion is 1:1 because the return value is not used.
Generated by a coccinelle script.
Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If we add 6 GHz capability in MLO, we cannot use the SMPS
mode from the deflink. Pass it separately instead since on
a second link we don't even have a link data struct yet.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
From 'IEEE Std 802.11-2020 section 11.8.8.4.1':
The mesh channel switch may be triggered by the need to avoid
interference to a detected radar signal, or to reassign mesh STA
channels to ensure the MBSS connectivity.
A 20/40 MHz MBSS may be changed to a 20 MHz MBSS and a 20 MHz
MBSS may be changed to a 20/40 MHz MBSS.
Since the standard allows the change of bandwidth during
the channel switch in mesh, remove the bandwidth check present in
ieee80211_set_csa_beacon.
Fixes: c6da674aff ("{nl,cfg,mac}80211: enable the triggering of CSA frame in mesh")
Signed-off-by: Hari Chandrakanthan <quic_haric@quicinc.com>
Link: https://lore.kernel.org/r/1658903549-21218-1-git-send-email-quic_haric@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Commit 177577dbd2 ("wifi: mac80211: sta_info: fix link_sta insertion")
makes ieee80211_sta_activate_link() return 0 in the 'hash' label case.
Hence, setting ret in the !test_sta_flag(...) branch to zero is not needed
anymore and can be dropped.
Remove a needless assignment.
No functional change. No change in object code.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Link: https://lore.kernel.org/r/20220812103126.25308-1-lukas.bulwahn@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In ieee80211_tx_dequeue() we currently allow a control port
frame to be transmitted on a non-authorized port only if the
A2 matches the local interface address, but if that's an MLD
and the peer is a legacy peer, we need to allow link address
here. Fix that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
For an AP interface, when userspace specifieds the link ID to
transmit the control port frame on (in particular for the
initial 4-way-HS), due to the logic in ieee80211_build_hdr()
for a frame transmitted from/to an MLD, we currently build a
header with
A1 = DA = MLD address of the peer MLD
A2 = local link address (!)
A3 = SA = local MLD address
This clearly makes no sense, and leads to two problems:
- if the frame were encrypted (not true for the initial
4-way-HS) the AAD would be calculated incorrectly
- if iTXQs are used, the frame is dropped by logic in
ieee80211_tx_dequeue()
Fix the addressing, which fixes the first bullet, and the
second bullet for peer MLDs, I'll fix the second one for
non-MLD peers separately.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This is simple here, and might save drivers some work if
they have common code for TX between beacons and other
frames.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
To helper drivers if they e.g. have a lookup of the link_sta
pointer, add the link ID to the link_sta structure.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
For AP/non-AP the EHT MCS/NSS subfield size differs, the
4-octet subfield is only used for 20 MHz-only non-AP STA.
Pass an argument around everywhere to be able to parse it
properly.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Draft P802.11be_D2.1, section 35.3.17 states that the EML Capabilities
Field shouldn't be included in case the device doesn't have support for
EMLSR or EMLMR.
Fixes: 81151ce462 ("wifi: mac80211: support MLO authentication/association with one link")
Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When queuing frames to an interface store the link ID we
determined (which possibly came from the driver in the
RX status in the first place) in the RX status, and use
it in the MLME code to send probe responses, beacons and
CSA frames to the right link.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
With link_id reported in rx_status for MLO connection, do the
stats update on the appropriate link instead of always deflink.
Signed-off-by: Vasanthakumar Thiagarajan <quic_vthiagar@quicinc.com>
Link: https://lore.kernel.org/r/20220817104213.2531-3-quic_vthiagar@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In MLO, when the address translation from link to MLD is done
in fw/hw, it is necessary to be able to have some information
on the link on which the frame has been received. Extend the
rx API to include link_id and a valid flag in ieee80211_rx_status.
Also make chanes to mac80211 rx APIs to make use of the reported
link_id after sanity checks.
Signed-off-by: Vasanthakumar Thiagarajan <quic_vthiagar@quicinc.com>
Link: https://lore.kernel.org/r/20220817104213.2531-2-quic_vthiagar@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Implement key installation and lookup (on TX and RX)
for MLO, so we can use multiple GTKs/IGTKs/BIGTKs.
Co-authored-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add support for various key operations on MLD by adding new parameter
link_id. Pass the link_id received from userspace to driver for add_key,
get_key, del_key, set_default_key, set_default_mgmt_key and
set_default_beacon_key to support configuring keys specific to each MLO
link. Userspace must not specify link ID for MLO pairwise key since it
is common for all the MLO links.
Signed-off-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Link: https://lore.kernel.org/r/20220730052643.1959111-4-quic_vjakkam@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We've already freed the assoc_data at this point, so need
to use another copy of the AP (MLD) address instead.
Fixes: 81151ce462 ("wifi: mac80211: support MLO authentication/association with one link")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Configure the correct link per the passed parameters.
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
For an AP interface, set the link BSSID when the link
is initialized.
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In ieee80211_sta_remove_link, valid_links is set to
the new_links before calling drv_change_sta_links, but
is used for the old_links.
Fixes: cb71f1d136 ("wifi: mac80211: add sta link addition/removal")
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If there's no link ID, then check that there are no changes to
the link, and if so accept them, unless a new link is created.
While at it, reject creating a new link without an address.
This fixes authorizing an MLD (peer) that has no link 0.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The ieee80211_lookup_ra_sta() function will sometimes set "sta" to NULL
so add this NULL check to prevent an Oops.
Fixes: 9dd1953846 ("wifi: nl80211/mac80211: clarify link ID in control port TX")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YuKcTAyO94YOy0Bu@kili
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add missing dev_kfree_skb() in an error path in
ieee80211_tx_control_port() to avoid a memory leak.
Fixes: dd820ed633 ("wifi: mac80211: return error from control port TX for drops")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220818043349.4168835-1-yangyingliang@huawei.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
ieee80211_scan_rx() tries to access scan_req->flags after a
null check, but a UAF is observed when the scan is completed
and __ieee80211_scan_completed() executes, which then calls
cfg80211_scan_done() leading to the freeing of scan_req.
Since scan_req is rcu_dereference()'d, prevent the racing in
__ieee80211_scan_completed() by ensuring that from mac80211's
POV it is no longer accessed from an RCU read critical section
before we call cfg80211_scan_done().
Cc: stable@vger.kernel.org
Link: https://syzkaller.appspot.com/bug?extid=f9acff9bf08a845f225d
Reported-by: syzbot+f9acff9bf08a845f225d@syzkaller.appspotmail.com
Suggested-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Siddh Raman Pant <code@siddh.me>
Link: https://lore.kernel.org/r/20220819200340.34826-1-code@siddh.me
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
- Runtime verification infrastructure
This is the biggest change for this pull request. It introduces the
runtime verification that is necessary for running Linux on safety
critical systems. It allows for deterministic automata models to be
inserted into the kernel that will attach to tracepoints, where the
information on these tracepoints will move the model from state to state.
If a state is encountered that does not belong to the model, it will then
activate a given reactor, that could just inform the user or even panic
the kernel (for which safety critical systems will detect and can recover
from).
- Two monitor models are also added: Wakeup In Preemptive (WIP - not to be
confused with "work in progress"), and Wakeup While Not Running (WWNR).
- Added __vstring() helper to the TRACE_EVENT() macro to replace several
vsnprintf() usages that were all doing it wrong.
- eprobes now can have their event autogenerated when the event name is left
off.
- The rest is various cleanups and fixes.
-----BEGIN PGP SIGNATURE-----
iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCYu0yzRQccm9zdGVkdEBn
b29kbWlzLm9yZwAKCRAp5XQQmuv6qj4HAP4tQtV55rjj4DQ5XIXmtI3/64PmyRSJ
+y4DEXi1UvEUCQD/QAuQfWoT/7gh35ltkfeS4t3ockzy14rrkP5drZigiQA=
=kEtM
-----END PGP SIGNATURE-----
Merge tag 'trace-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt:
- Runtime verification infrastructure
This is the biggest change here. It introduces the runtime
verification that is necessary for running Linux on safety critical
systems.
It allows for deterministic automata models to be inserted into the
kernel that will attach to tracepoints, where the information on
these tracepoints will move the model from state to state.
If a state is encountered that does not belong to the model, it will
then activate a given reactor, that could just inform the user or
even panic the kernel (for which safety critical systems will detect
and can recover from).
- Two monitor models are also added: Wakeup In Preemptive (WIP - not to
be confused with "work in progress"), and Wakeup While Not Running
(WWNR).
- Added __vstring() helper to the TRACE_EVENT() macro to replace
several vsnprintf() usages that were all doing it wrong.
- eprobes now can have their event autogenerated when the event name is
left off.
- The rest is various cleanups and fixes.
* tag 'trace-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (50 commits)
rv: Unlock on error path in rv_unregister_reactor()
tracing: Use alignof__(struct {type b;}) instead of offsetof()
tracing/eprobe: Show syntax error logs in error_log file
scripts/tracing: Fix typo 'the the' in comment
tracepoints: It is CONFIG_TRACEPOINTS not CONFIG_TRACEPOINT
tracing: Use free_trace_buffer() in allocate_trace_buffers()
tracing: Use a struct alignof to determine trace event field alignment
rv/reactor: Add the panic reactor
rv/reactor: Add the printk reactor
rv/monitor: Add the wwnr monitor
rv/monitor: Add the wip monitor
rv/monitor: Add the wip monitor skeleton created by dot2k
Documentation/rv: Add deterministic automata instrumentation documentation
Documentation/rv: Add deterministic automata monitor synthesis documentation
tools/rv: Add dot2k
Documentation/rv: Add deterministic automaton documentation
tools/rv: Add dot2c
Documentation/rv: Add a basic documentation
rv/include: Add instrumentation helper functions
rv/include: Add deterministic automata monitor definition via C macros
...
Instead of open coding a __dynamic_array() with a fixed length (which
defeats the purpose of the dynamic array in the first place). Use the new
__vstring() helper that will use a va_list and only write enough of the
string into the ring buffer that is needed.
Link: https://lkml.kernel.org/r/20220705224751.271015450@goodmis.org
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
During the code reshuffling, I accidentally set this to
NULL before using it, fix that to fix the link data leak.
Fixes: d3e2439b0f ("wifi: mac80211: fix link manipulation")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In MLO we shouldn't call ieee80211_bss_info_change_notify(),
call that only (for backward compatibility) without MLO, and
otherwise ieee80211_vif_cfg_change_notify().
Similarly, ieee80211_reset_erp_info() only applies to the
current link, and in MLO we assume the driver doesn't really
need that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In sta_apply_parameters(), we really no longer need to
check that the link or sband exists, in fact, that's
harmful if link 0 doesn't exist, since then this will
fail.
Just remove this check, it was added for validation of
the sband where used, but it's not used here, it's now
only used in sta_link_apply_parameters() which has an
own lookup and check.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
To transmit the association frame to the right station and
with address translation, use the correct addresses there
and set up the AP address in the configuration earlier so
it's applied during the transmit of auth/assoc frames.
Fixes: 81151ce462 ("wifi: mac80211: support MLO authentication/association with one link")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We'll need the link e.g. for decrypt, and shouldn't be
looking it up all the time later, so track it in the RX
data.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
For drivers using software encryption for multicast TX, such
as mac80211_hwsim, mac80211 needs to duplicate the multicast
frames on each link, if MLO is enabled. Do this, but don't
just make it dependent on the key but provide a separate flag
for drivers to opt out of this.
This is not very efficient, I expect that drivers will do it
in firmware/hardware or at least with DMA engine assistence,
so this is mostly for hwsim.
To make this work, also implement the SNS11 sequence number
space that an AP MLD shall have, and modify the API to the
__ieee80211_subif_start_xmit() function to always require the
link ID bits to be set.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There are a couple of new things that should be possible
with MLO:
* selecting the link to transmit to a station by link ID,
which a previous patch added to the nl80211 API
* selecting the link by frequency, similarly
* allowing transmittion to an MLD without specifying any
channel or link ID, with MLD addresses
Enable these use cases. Also fix the address comparison
in client mode to use the AP (MLD) address.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When the low level driver reports hardware timestamps for frame
TX status or frame RX, pass the timestamps to cfg80211.
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When inserting a link STA, make sure it doesn't exist first
and add lockdep assertions that we cannot modify the hash
table without holding the sta_mtx, so this check is really
correct.
Also return without hashing if the driver failed, and warn
if the hashing fails, which shouldn't happen due to the
check described above.
Fixes: cb71f1d136 ("wifi: mac80211: add sta link addition/removal")
Fixes: ba6ddab94f ("wifi: mac80211: maintain link-sta hash table")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We need to copy the address to both the private and public
portion of the link_sta (the private one is needed for the
hash table). Fix this.
Fixes: bbe90107e1 ("wifi: mac80211: mlme: refactor link station setup")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Clarify the link ID behaviour in control port TX, we need it
to select the link to transmit on for both MLD and non-MLD
receivers, but select the link address as the SA only if the
receiver is not an MLD.
Fixes: 67207bab93 ("wifi: cfg80211/mac80211: Support control port TX from specific link")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If the frame is going to be dropped anyway because
ieee80211_lookup_ra_sta() returned an error (and
even though it's a bit racy, it will likely continue
to do so), return the error out instead of just
silently dropping the frame.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add more sanity checks to the API handling, we shouldn't
be able to create a station without links, nor should we
be able to add a link to a station that wasn't created as
an MLD with links in the first place.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There are two issues here: we unhash the link stations only
directly before freeing the station they belong to, and we
also don't unhash all the links correctly in all cases. Fix
these issues.
Fixes: ba6ddab94f ("wifi: mac80211: maintain link-sta hash table")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When modifying a link station, validate that the link address
doesn't change, except the first time the link is created.
Fixes: b95eb7f0ee ("wifi: cfg80211/mac80211: separate link params from station params")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
At this point, we've already changed link_id to be zero for
a non-MLO connection, so use the 'mlo' variable rather than
link ID to determine the MLO status of the station.
Fixes: bd363ee533 ("wifi: mac80211: mlme: set sta.mlo correctly")
Fixes: 81151ce462 ("wifi: mac80211: support MLO authentication/association with one link")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If there's a non-MLO client, the A2 must be set to the BSSID
of the link since no translation will happen in lower layers
and it's needed that way for encryption.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We should only translate addr3 here if it's the BSSID.
Fixes: 42fb9148c0 ("wifi: mac80211: do link->MLD address translation on RX")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If we have a non-MLD STA on an AP MLD, we crash while
adding the station. Fix that, in this case we need to
use the STA's address also on the link data structure.
Fixes: f36fe0a2df ("wifi: mac80211: fix up link station creation/insertion")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In my previous changes here, I neglected to take the old
conn_flags into account that might still be present from
the authentication, and thus ieee80211_setup_assoc_link()
can misbehave, as well as the override calculation being
wrong. Fix that by ORing in the old flags.
Fixes: 1845c1d4a4 ("wifi: mac80211: mlme: refactor assoc link setup")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In a few places we need to use the AP (MLD) address, not the
deflink BSSID, the link address translation will happen later.
To make that work properly for fast-xmit, set up the ap_addr
in the vif.cfg earlier.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
lockdep complains use of uninitialized spinlock at ieee80211_do_stop() [1],
for commit f856373e2f ("wifi: mac80211: do not wake queues on a vif
that is being stopped") guards clear_bit() using fq.lock even before
fq_init() from ieee80211_txq_setup_flows() initializes this spinlock.
According to discussion [2], Toke was not happy with expanding usage of
fq.lock. Since __ieee80211_wake_txqs() is called under RCU read lock, we
can instead use synchronize_rcu() for flushing ieee80211_wake_txqs().
Link: https://syzkaller.appspot.com/bug?extid=eceab52db7c4b961e9d6 [1]
Link: https://lkml.kernel.org/r/874k0zowh2.fsf@toke.dk [2]
Reported-by: syzbot <syzbot+eceab52db7c4b961e9d6@syzkaller.appspotmail.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Fixes: f856373e2f ("wifi: mac80211: do not wake queues on a vif that is being stopped")
Tested-by: syzbot <syzbot+eceab52db7c4b961e9d6@syzkaller.appspotmail.com>
Acked-by: Toke Høiland-Jørgensen <toke@kernel.org>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/9cc9b81d-75a3-3925-b612-9d0ad3cab82b@I-love.SAKURA.ne.jp
Due to some changes and rebasing between different patches
this fell through the cracks; we need to set sta.mlo if the
connection is using MLO.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
It might seem a bit pointless to do a multi-link operation
connection with just a single link, but this is already a
big change, so for now, limit MLO connections to a single
link.
Extending that to multiple links will require
* work on parsing the multi-link element with STA profile
properly, including element fragmentation;
* checking the per-link status in the multi-link element
* implementing logic to have active/inactive links to let
drivers decide which links should be active;
* implementing multicast RX deduplication;
* and likely more.
For now this is still useful since it lets us do multi-link
connections for the purposes of testing APIs and the higher
layers such as wpa_supplicant.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add the necessary API to parse the multi-link element in
the future. For now, link only to the element when found
so we can use it in the client-side code later.
Later, we'll need to fill this in to deal with element
fragmentation, parse the STA profile, etc.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In some cases, e.g. with Qualcomm devices and management
frames, or in hwsim, frames may be reported from the driver
with link addresses, but for decryption and matching needs
we really want to have them with MLD addresses. Support the
translation on RX.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When an MLO AP is transmitting to a non-MLO station, addr2 should be set
to a link address. This should be done before the frame is encrypted as
otherwise aad verification would fail. In case of software encryption
this can't be left for the device to handle, and should be done by
mac80211 when building the frame hdr.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When we create a station with a non-default link, then
we should have a link address, and we definitely need
to insert it into the link hash table on insertion.
Split the API into with and without link creation and
if it has a link, insert the link into the link hash
table on sta_info_insert().
Fixes: ba6ddab94f ("wifi: mac80211: maintain link-sta hash table")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In AP/mesh where the stations are added by userspace, we
limit the number of A-MSDU subframes according to the
extended capabilities.
Refactor the code and extend that also to client-side.
Fixes: 506bcfa8ab ("mac80211: limit the A-MSDU Tx based on peer's capabilities")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Split out much of the code in ieee80211_set_associated()
into a new ieee80211_link_set_associated() which can be
called per link later for MLO.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If NEED_DTIM_BEFORE_ASSOC isn't set, then we don't need
to enter an RCU critical section and look up the beacon
elements.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Factor out the code to set up the assoc link into a
new function ieee80211_setup_assoc_link().
While at it, also modify the 'override' handling to
just take into account whether or not the conn_flags
were changed, which is what we need to setup again
the channel later.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There's no need to pass the address, we can look at the auth_data
inside the function rather than outside.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Refactor the per-link setup out of ieee80211_assoc_success()
into a new function ieee80211_assoc_config_link().
It looks useless for now to parse the elements again inside
ieee80211_assoc_config_link(), but that will be done with
the link ID in the future.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Refactor ieee80211_prep_channel() to make the link argument
optional and add a conn_flags pointer argument instead, so
that we can later use this for links that don't exist yet
to build the right information for MLO.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
For MLO, we will need to build these elements per link, so
factor out the code that does this, returning the capability,
to simplify building the multi-link element in the future.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
With MLO, when we'll disconnect from an AP MLD, we'll just
destroy all the links. Therefore, the only thing we (may)
need to reset is the deflink data, so switch back to that
and adjust the comments accordingly.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
For MLO we'll need to read flags not directly from the link as
it may not even exist yet if we're just setting up flags for
a secondary link before sending the association request, so
pass the incoming conn_flags separately. Also, while at it,
pass the sdata/link separately as for non-tracking now the
link may be NULL.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We'll need ieee80211_prep_channel() in other code for MLO
later, so move the code up - unchanged for now - to avoid
forward declarations in the future.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Refactor the code here since we need to have it also for each
link station after association in MLO later.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The flag here is currently per interface, but the way we
set and clear it means it should be per link, so change
it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When sending an authentication frame from an MLD, include
the multi-link element with the MLD address and use the
link address for transmission.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Clean up the code building the supported channels element
a little bit by using a local variable instead of the long
line.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
For now, prohibit DEAUTH_NEED_MGD_TX_PREP since we can't
really transmit this on a specific link yet as we don't
know which links are active.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since struct ieee80211_bss_conf already contains link_id,
passing link_id is not necessary.
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since mac80211 already has a protected pointer to link_conf,
pass it to the driver to avoid additional RCU locking.
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Recalculate min channel context for the given or all interface
links, depending on the caller. For a station state change, we
need to recalculate all of them since we don't know which link
(or multiple) it might be on.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We check here that we don't enable TX (netif_carrier_ok())
before we actually start using some channel context, but to
our knowledge this check has never triggered, and with MLO
it's just wrong since links can be added and removed much
more dynamically than before.
Simply remove the checks, there's no really good way to do
anything that would replace them.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Allow link source address on TX.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Allow transmitting EAPOL frames not only from the interface
address (which is the MLD address) but also any link addresses,
in order to support non-MLO stations on AP interfaces.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In case of authentication with a legacy station, link addressed EAPOL
frames should be sent. Support it.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The way this works is that you add all the element data,
keeping a pointer to the length field of the element.
Then call this helper function, which will fragment the
element if there was more than 255 bytes in the element,
memmove()ing the data back if needed.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
For now, skip rate statistics here to avoid warnings in
the called code, we'll need to adjust this to have all
the statistics for link stations.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When we add non-deflink pointers, we need to remove the
link[0] pointer to deflink in case link[0] is not valid
afterwards. Also, we need to add that back when there
are no more valid links. Reorg the code to fix that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When we remove a link that doesn't have a channel context,
we don't really need the local->mtx locking. Tighten the
check here.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We need to consider the (maximum) size of the EHT element
we'll add for the association request, otherwise we may run
out of space.
Fixes: 820acc810f ("mac80211: Add EHT capabilities to association/probe request")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The functions currently take a link and check data
from it, but this needs to change for MLO. Simplify
the prototypes by passing only the needed arguments.
Remove the regulatory checks, the warnings shouldn't
trigger, and haven't as far as I know.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Rework the sorting of custom elements into the association
request by moving the elements before HT/VHT/HE to each
their own function. While at it, fix the placement of the
ones that should be between VHT and HE.
This doesn't fix the placement of elements that should be
between HE and EHT yet, a similar change might be needed
in the future.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There's some awkward code that really only exists
because we want to optimize the allocation size,
but that's not really all that necessary.
Refactor the code that adds rates to the association
request frame to have a separate function, removing
the goto.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Here, ext_capa is checked and can only be non-NULL if
assoc_data->ie_len was set before, so the check here
is redundant.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We need to handle the link addresses for station differently,
they will be determined by the association code, stored, and
then applied when the links are actually created on success,
cfg80211 will fill in the right addresses per the data we're
sending back to it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When parsing a frame containing a multi-BSSID element, we
need to know both the transmitted and non-transmitted BSSID
so we can parse it correctly.
Unfortunately, in quite a number of cases, we got this wrong
and were passing the wrong BSSID or useless information:
* the mgmt->bssid from a frame is only the transmitted
BSSID if the frame is a beacon
* passing just one of the parameters as non-NULL isn't
useful and ignored
In those case where we need to parse for a specific BSS we
always have a BSS structure pointer, representing the BSS
we need, whether transmitted or not. Thus, pass that pointer
to the parsing function instead of the two BSSIDs.
Also fix two bugs:
* we need to re-parse all the elements for the other BSS
when iterating the non-transmitted BSSes in scan
* we need to parse for the correct BSS when setting up
the channel data in client code
Fixes: 78ac51f815 ("mac80211: support multi-bssid")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We're already passing the elems pointer, and have parsed
them from the same frame with exactly the same parameters,
so don't need to do that again.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When calling start/stop_ap(), mac80211 already has a protected
link_conf pointer. Pass it to the driver, so it shouldn't
handle RCU protection.
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Refactor the element parsing into a version that has
a parameter struct so we can add more parameters more
easily in the future.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Extend the cfg80211_rx_assoc_resp() to cover multiple
BSSes, the AP MLD address and local link addresses
for MLO.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
For MLO we'll need a lot more arguments, including all the
BSS pointers and link addresses, so move the data to a struct
to be able to extend it more easily later.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We only report the BSSID to userspace, so change the
argument from BSS struct pointer to AP address, which
we'll use to carry either the BSSID or AP MLD address.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There are a few cases where we send an event to cfg80211
manually, but ieee80211_destroy_assoc_data() also handles
the case of abandoning; some cases don't need an event
and success is handled yet differently.
Unify this by providing a single status argument to the
ieee80211_destroy_assoc_data() function and then handling
all the different cases of events (or no events) there.
This will help simplify the code when MLO support is
added.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
For MLO, we need the ability to report back multiple BSS
structures to release, as well as the AP MLD address (if
attempting to make an MLO connection).
Unify cfg80211_assoc_timeout() and cfg80211_abandon_assoc()
into a new cfg80211_assoc_failure() that gets a structure
parameter with the necessary data.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The race described by the comment in mac80211 hasn't existed
since the locking rework to use the same lock and for MLO we
need to pass the AP MLD address, so just pass the BSSID or
AP MLD address instead of the BSS struct pointer, and adjust
all the code accordingly.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
For station capabilities, e.g. TWT, we need to use the correct
link station instead of deflink. Switch the code to do that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The argument is unused except for NULL checking, but we already
do that anyway, so it's not needed. Remove the argument.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This requires a few more changes.
While at it, also add a warning to ieee80211_get_sband()
to avoid it being used when there are multiple links.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If we decide to stop tracking QoS/WMM parameters, then
this should be a per-link decision. Move the flag to
the link instead.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Do the first adjustments in the client-side code to pass
the link pointer (instead of sdata) to most places etc.
This is just preparation, so the real MLO patches become
smaller.
Note that this isn't complete, notably there are still
quite a few references to sta->deflink and sta->sta.deflink.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Remove the IEEE80211_STA_RESET_SIGNAL_AVE flag and use
a bool instead, but invert the polarity (now calling it
tracking_signal_avg) so we don't have to initialize it,
and put that into the link instead.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
To prepare a bit more for MLO in the client code,
track the AP's address (for now only the BSSID, but
will track the AP MLD's address later) separately
from the per-link BSSID.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In MLO, expect the driver fully handles powersave handling,
including tracking whether or not a beacon was received,
the DTIM period, etc.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This really shouldn't be in a per-link config, we don't want
to let anyone control it that way (if anything, link powersave
could be forced through APIs to activate/deactivate a link),
and we don't support powersave in software with devices that
can do MLO.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
It might be useful to drivers to be able to pass only the
link_conf pointer, rather than both the pointer and the
link_id; add the link_id to the link_conf to facility that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In station/client mode, the link data needs a bit more
initialization and destruction than just zero-init and
kfree() respectively, implement that.
This required some shuffling of the link data handling
in general, as we should set it up in setup and do the
teardown in teardown, otherwise we're asymmetric in
case of interface type changes.
Also stop using kfree_rcu(), we cannot guarantee that
nothing is scheduling things that live within the link
(e.g. the u.mgd.request_smps_work) until we're sure it
cannot be referenced anymore, therefore synchronize
instead. This isn't very efficient, but we can always
optimize it later.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
With the split into keys[]/deflink.gtk[] arrays, WEP keys are
still installed into the keys[] array, but we didn't look them
up there. This meant they weren't deleted correctly.
Fix this by looking up the key there even if it's not pairwise
so we can be sure we don't have it.
Fixes: bfd8403add ("wifi: mac80211: reorg some iface data structs for MLD")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Separate out the connection downgrade flags from the ifmgd->flags
and put them into the link information instead. While at it, make
them a separate sparse type so we don't get confused about where
they belong and have static checking on correct handling.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Align the mac80211 implementation with P802.11be_D1.5.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There are a few places that check ps_sdata and/or the dynamic
PS timeout, but they're erroneous in case SUPPORTS_DYNAMIC_PS
is set by the driver.
Skip the entire recalculation in this case so we cannot get
into those paths elsewhere, and so we simplify this for the
purpose of implementing MLO.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If we don't really have multiple links, omit the link ID from
link debug prints, otherwise we change the format for all of
the existing drivers (most of which might never support MLO),
and also have extra noise in the logs.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since links can be added and removed dynamically, we need to
somehow protect the sdata->link[] and vif->link_conf[] array
pointers from disappearing when accessing them without locks.
RCU-ify the pointers to achieve this, which requires quite a
bit of rework.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Put the link_station_parameters structure in the station_parameters
structure (and remove the station_parameters fields already existing
in link_station_parameters).
Now, for an MLD station, the default link is added together with
the station.
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Similar to ieee80211_get_sband but get the sband of the link_conf.
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
AP SMPS was removed and not needed anymore. Remove the leftovers.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Check all the MLO links to decide whether offchannel TX is needed.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When checking whether or not to accept a frame in RX,
take into account the configured link addresses. Also
look up the link station correctly.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
ieee80211s_update_metric function uses sta_set_rate_info_tx
function to get struct rate_info data from ieee80211_tx_rate
struct, present in ieee80211_sta->deflink.tx_stats. However,
drivers can skip tx rate calculation by setting rate idx as
-1. Such drivers provides rate_info directly and hence
ieee80211s metric is updated incorrectly since ieee80211_tx_rate
has inconsistent data.
Add fix to use rate_info directly if present instead of
sta_set_rate_info_tx for updating ieee80211s metric.
Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Link: https://lore.kernel.org/r/20220701133611.544-1-quic_adisi@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
WDS needs 4addr packets to trigger AP for wlan0.sta creation.
However, the 4addr null frame is sent at a high rate so that
sometimes the AP can't receive it. Switch to using min rate.
Signed-off-by: Lian Chen <lian.chen@mediatek.com>
Link: https://lore.kernel.org/r/20220714091636.59107-1-lian.chen@mediatek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In AP mode, multicast traffic is handled very differently from normal traffic,
especially if at least one client is in powersave mode.
This means that multicast packets can be buffered a lot longer than normal
unicast packets, and can eat up the AQL budget very quickly because of the low
data rate.
Along with the recent change to maintain a global PHY AQL limit, this can lead
to significant latency spikes for unicast traffic.
Since queueing multicast to hardware is currently not constrained by AQL limits
anyway, let's just exclude it from the AQL pending airtime calculation entirely.
Fixes: 8e4bac0671 ("wifi: mac80211: add a per-PHY AQL limit to improve fairness")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20220713083444.86129-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When using iTXQ, the code assumes that there is only one vif queue for
broadcast packets, using the BE queue. Allowing non-BE queue marking
violates that assumption and txq->ac == skb_queue_mapping is no longer
guaranteed. This can cause issues with queue handling in the driver and
also causes issues with the recent ATF change, resulting in an AQL
underflow warning.
Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20220702145227.39356-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When mac80211 downgrades working bandwidth, the
center_freq and center_freq1 need to be recalculated.
There is a typo in the case of downgrading bandwidth from
320MHz to 160MHz which would cause a wrong frequency value.
Reviewed-by: Money Wang <Money.Wang@mediatek.com>
Signed-off-by: MeiChia Chiu <MeiChia.Chiu@mediatek.com>
Link: https://lore.kernel.org/r/20220708095823.12959-1-MeiChia.Chiu@mediatek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If the interface isn't (yet) added to the driver, skip the
link info update. This was previously done for the BSS info
changes, but I forgot to copy the same check here.
Fixes: 7b7090b4c6 ("wifi: mac80211: split bss_info_changed method")
Reported-by: syzbot+bce2ca140cc00578ed07@syzkaller.appspotmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When a client does not generate any local tx activity, accumulating airtime
deficit for the round-robin scheduler can be harmful. If this goes on for too
long, the deficit could grow quite large, which might cause unreasonable
initial latency once the client becomes active
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Link: https://lore.kernel.org/r/20220625212411.36675-7-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Now that the global pending airtime is more relevant for airtime fairness,
it makes sense to make it accessible via debugfs for debugging
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Link: https://lore.kernel.org/r/20220625212411.36675-6-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In order to maintain fairness, the amount of queueing needs to be limited
beyond the simple per-station AQL budget, otherwise the driver can simply
repeatedly do scheduling rounds until all queues that have not used their
AQL budget become eligble.
To be conservative, use the high AQL limit for the first txq and add half
of the low AQL for each subsequent queue.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Link: https://lore.kernel.org/r/20220625212411.36675-5-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This allows proper deficit accounting to ensure that they don't carry their
deficit until the next time they become active
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Link: https://lore.kernel.org/r/20220625212411.36675-4-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When queueing packets for a station, deficit only gets added once the packets
have been transmitted, which could be much later. During that time, a lot of
temporary unfairness could happen, which could lead to bursty behavior.
Fix this by subtracting the aql_tx_pending when checking the deficit in tx
scheduling.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Link: https://lore.kernel.org/r/20220625212411.36675-3-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
32 bit is more than enough range for the airtime deficit
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Link: https://lore.kernel.org/r/20220625212411.36675-2-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This reverts commits 6a789ba679 and
2433647bc8.
The virtual time scheduler code has a number of issues:
- queues slowed down by hardware/firmware powersave handling were not properly
handled.
- on ath10k in push-pull mode, tx queues that the driver tries to pull from
were starved, causing excessive latency
- delay between tx enqueue and reported airtime use were causing excessively
bursty tx behavior
The bursty behavior may also be present on the round-robin scheduler, but there
it is much easier to fix without introducing additional regressions
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Link: https://lore.kernel.org/r/20220625212411.36675-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
struct link_sta_info has now a cur_max_bandwidth data:
net/mac80211/sta_info.h:569: warning: Function parameter or member 'cur_max_bandwidth' not described in 'link_sta_info'
Copy the meaning from struct sta_info, documenting it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Link: https://lore.kernel.org/r/37d898634bb30776442a33833c48cbb21c90ecc6.1656409369.git.mchehab@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When a vif is being removed and sdata->bss is cleared, __ieee80211_wake_txqs
can still be called on it, which crashes as soon as sdata->bss is being
dereferenced.
To fix this properly, check for SDATA_STATE_RUNNING before waking queues,
and take the fq lock when setting it (to ensure that __ieee80211_wake_txqs
observes the change when running on a different CPU)
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Toke Høiland-Jørgensen <toke@kernel.org>
Link: https://lore.kernel.org/r/20220531190824.60019-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Introduce the capability to specify gfp_t parameter to
ieeee80211_obss_color_collision_notify routine since it runs in
interrupt context in ieee80211_rx_check_bss_color_collision().
Fixes: 6d945a33f2 ("mac80211: introduce BSS color collision detection")
Co-developed-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/02c990fb3fbd929c8548a656477d20d6c0427a13.1655419135.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We should set the STA deflink addresses in case no
link is really added.
Fixes: 046d2e7c50 ("mac80211: prepare sta handling for MLO support")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Maintain a hash table of link-sta addresses so we can find
them for management frames etc. where addresses haven't
been replaced by the drivers to the MLD address yet.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We need to be able to access these in a race-free way under
traffic while adding/removing them, so RCU-ify the pointers.
This requires passing a link_sta to a lot of functions so
we don't have to do the RCU handling everywhere.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Hardcoding link[0] is more confusing than using deflink,
so use deflink for now, which requires making the macro
a bit safer.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Pass the link id through to the get_beacon and return
the beacon for a specific link id.
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In start_ap and stop_ap mac80211 callbacks pass the link_id
to the drivers.
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Use link and link_conf according to the link_id
provided by cfg in start_ap/stop_ap and change_beacon.
Also use them in the functions called by them.
Note that for a non MLD device, the link_id is 0,
and link[0] and link_conf[0] equal to deflink and
bss_conf respectively (what was there before).
Also, call vif_info_change for BSS related changes (SSID), and
link_info_change for LINK related changes (instead of the
legacy bss_info_change).
Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When a link is added or removed via nl80211, these are
called. Implement them so we don't have to check in all
the different per-link commands whether we've already
created the necessary datastructures.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add the necessary infrastructure, including a new driver
method, to add/remove links to/from a station. To do this,
refactor the link alloc/free a bit, splitting that so we
can do it without linking them, to handle failures better.
Note that a station entry must be created representing an
MLD or a non-MLD STA, it cannot change between the two.
When representing an MLD, the 'deflink' is used for the
first link, which might be removed later, in which case
the memory isn't reused.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Take a few bits out of the control.flags to add the link ID
to TX frame metadata, so drivers don't need to look it up
by the address themselves. Implement that lookup where it's
needed, for internal frame TX, and set it to "unspecified"
for data transmissions.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If the interface is an MLD, then we don't know which band
the frame will be transmitted on, and we don't know how to
look up the band. Set the band information to zero in that
case, the driver cannot rely on it anyway.
No longer inline ieee80211_tx_skb_tid() since it's even
bigger now.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add the necessary infrastructure, including a new driver
method, to add/remove links to/from an interface.
Also add the missing link address to bss_conf (which we
use as link_conf too), and fill it, in station mode for
now just randomly, in AP mode we get the address from
cfg80211 since the link must be created with an address
first.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When channel contexts are used, IEEE80211_CONF_CHANGE_SMPS
doesn't make sense and doesn't apply (which is documented).
Mask it in this case.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In ieee80211_build_hdr() we do the same thing for all
interface types except for AP_VLAN, but we can simplify
the code by pulling the common thing in front of the
switch and overriding it for AP_VLAN. This will also
simplify the code for MLD here later.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
For MLD, we might eventually not really know the band on status,
but some code assumes it's there. Move the sband lookup deep to
the code that actually needs it, to make it clear where exactly
it's needed and for what purposes.
For rate control, at least initially we won't support it in MLO,
so that won't be an issue.
For TX monitoring, we may have to elide the rate and/or rely on
ieee80211_tx_status_ext() for rate information.
This also simplifies the function prototypes.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This used to be sorted by driver methods, APIs and internal
functions, but got added to in the wrong sections. Fix that
by ordering the file properly again.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Start making some SMPS related code MLD-aware. This isn't
really done yet, but again cuts down our 'deflink' reliance.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We don't need to setup lists and work structs every time
we switch the interface type, factor that out into a new
ieee80211_link_init() function and use it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If MLO is enabled by the driver then validate a set of
capabilities that mac80211 will initially not support
in MLO. This might change if features are implemented.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Remove MAX_STA_LINKS and use IEEE80211_MLD_MAX_NUM_LINKS
instead to unify between the station and other data structures.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Refactor the code a bit to initialize a link belonging
to a station, and (later) free all allocated links.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The function is unused since commit 52b4810bed ("mac80211: Remove
support for changing AP SMPS mode") so we can just remove it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Make the channel context code MLO aware, along with some
functions that it uses, so that the chan.c file is now
MLD-clean and no longer uses deflink/bss_conf/etc.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In a few cases we already have the link ID in the APIs,
pass it already even if it cannot be non-zero yet.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add pointers so we can start using link_id throughout the
code, even if for now only link ID 0 is valid, pointing
to the "built-in" bss_conf, which is used by drivers that
are not aware of MLD.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Split the bss_info_changed method to vif_cfg_changed and
link_info_changed, with the latter getting a link ID.
Also change the 'changed' parameter to u64 already, we
know we need that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Start reorganizing interface related data structures toward
MLD. The most complex part here is for the keys, since we
have to split the various kinds of GTKs off to the link but
still need to use (for WEP) the other keys as a fallback
even for multicast frames.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We'll use bss_conf for per-link configuration later, so
move out all the non-link-specific data out into a new
struct ieee80211_vif_cfg used in the vif.
Some adjustments were done with the following spatch:
@@
expression sdata;
struct ieee80211_vif *vifp;
identifier var = { assoc, ibss_joined, aid, arp_addr_list, arp_addr_cnt, ssid, ssid_len, s1g, ibss_creator };
@@
(
-sdata->vif.bss_conf.var
+sdata->vif.cfg.var
|
-vifp->bss_conf.var
+vifp->cfg.var
)
@bss_conf@
struct ieee80211_bss_conf *bss_conf;
identifier var = { assoc, ibss_joined, aid, arp_addr_list, arp_addr_cnt, ssid, ssid_len, s1g, ibss_creator };
@@
-bss_conf->var
+vif_cfg->var
(though more manual fixups were needed, e.g. replacing
"vif_cfg->" by "vif->cfg." in many files.)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
To add MLD, reuse the bss_conf structure later for per-link
information, so move some things into it that are per link.
Most transformations were done with the following spatch:
@@
expression sdata;
identifier var = { chanctx_conf, mu_mimo_owner, csa_active, color_change_active, color_change_color };
@@
-sdata->vif.var
+sdata->vif.bss_conf.var
@@
struct ieee80211_vif *vif;
identifier var = { chanctx_conf, mu_mimo_owner, csa_active, color_change_active, color_change_color };
@@
-vif->var
+vif->bss_conf.var
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In order to support multi-link operation with multiple links,
start adding some APIs. The notable addition here is to have
the link ID in a new nl80211 attribute, that will be used to
differentiate the links in many nl80211 operations.
So far, this patch adds the netlink NL80211_ATTR_MLO_LINK_ID
attribute (as well as the NL80211_ATTR_MLO_LINKS attribute)
and plugs it through the system in some places, checking the
validity etc. along with other infrastructure needed for it.
For now, I've decided to include only the over-the-air link
ID in the API. I know we discussed that we eventually need to
have to have other ways of identifying a link, but for local
AP mode and auth/assoc commands as well as set_key etc. we'll
use the OTA ID.
Also included in this patch is some refactoring of the data
structures in struct wireless_dev, splitting for the first
time the data into type dependent pieces, to make reasoning
about these things easier.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We don't really care too much right now since our data
structures are set up to not have a problem with this,
but clearly it's wrong to accept WEP and pairwise keys
with key ID > 3.
However, with MLD we need to split into per-link (GTK,
IGTK, BIGTK) and per interface/MLD (including WEP) keys
so make sure this is not a problem.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Here's a first set of patches for v5.20. This is just a
queue flush, before we get things back from net-next that
are causing conflicts, and then can start merging a lot
of MLO (multi-link operation, part of 802.11be) code.
Lots of cleanups all over.
The only notable change is perhaps wilc1000 being the
first driver to disable WEP (while enabling WPA3).
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEH1e1rEeCd0AIMq6MB8qZga/fl8QFAmKjUdAACgkQB8qZga/f
l8RE0xAAhVNBB3r0n8bcZXNxmb/zswjyQcRV3BrSxRwfOGppB4iqHuTEx7U7iBOK
9hMacse+myVlFNncWzGnOiZ9XIIElepPATfHXYPlVOrUO5AzqvtuuZG/6cBShO+G
A1YrdVPYd87WiowTovY2x7tknZYMoQYeVeGmIMIEViM0RjULkXPC9AhpKbiHoV4I
Ayn97E0j2+6R/gCtlhYTm0ASvzbVVoIB9cHMwvopzEXtsIjcE5Tglgrhygtw0FI3
w2EZi5091c6IA2lc+kEmN2saAX72f6G3cewYID84/l8U2+VuwzdDUnXsyXYgGFF8
UM47qizFSrwAn7eSiUNpLK0b8um/C2+ryBBUDrhbCvlR6/8shwvV1YMSX5eo00Av
rPtC7/7wXF0ox8Os+FTTqAptyWDFQMI4dYkbQjZ4KsR7/jXssReIsYLLPlYGRgU5
zemdd1onofZN4N9QXMtMxR7xwoKvPBRGqZa0YgnbSGF7dSjL+fleVlRwuhLZsWvb
KJQyut9/InC9C2kKjsdK+bcv8lLmJE65PdFM5CZBLnEZvf7stOkeg2WcuqNSzjca
VO7UIv8yQeJV2cpSBgmC4XchAU21r2rEzViz7PDLTFB9ZfYgcBIad9G10Mx5u11L
2GHmDX5r2X1QD91nsTqOBCn0xO67jpcgxMpiGC31VReV7BTKvSc=
=E0Dx
-----END PGP SIGNATURE-----
Merge tag 'wireless-next-2022-06-10' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
Johannes Berg says:
====================
wireless-next patches for v5.20
Here's a first set of patches for v5.20. This is just a
queue flush, before we get things back from net-next that
are causing conflicts, and then can start merging a lot
of MLO (multi-link operation, part of 802.11be) code.
Lots of cleanups all over.
The only notable change is perhaps wilc1000 being the
first driver to disable WEP (while enabling WPA3).
* tag 'wireless-next-2022-06-10' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (29 commits)
wifi: mac80211_hwsim: Directly use ida_alloc()/free()
wifi: mac80211: refactor some key code
wifi: mac80211: remove cipher scheme support
wifi: nl80211: fix typo in comment
wifi: virt_wifi: fix typo in comment
rtw89: add new state to CFO state machine for UL-OFDMA
rtw89: 8852c: add trigger frame counter
ieee80211: add trigger frame definition
wifi: wfx: Remove redundant NULL check before release_firmware() call
wifi: rtw89: support MULTI_BSSID and correct BSSID mask of H2C
wifi: ray_cs: Drop useless status variable in parse_addr()
wifi: ray_cs: Utilize strnlen() in parse_addr()
wifi: rtw88: use %*ph to print small buffer
wifi: wilc1000: add IGTK support
wifi: wilc1000: add WPA3 SAE support
wifi: wilc1000: remove WEP security support
wifi: wilc1000: use correct sequence of RESET for chip Power-UP/Down
wifi: rtlwifi: fix error codes in rtl_debugfs_set_write_h2c()
wifi: rtw88: Fix Sparse warning for rtw8821c_hw_spec
wifi: rtw88: Fix Sparse warning for rtw8723d_hw_spec
...
====================
Link: https://lore.kernel.org/r/20220610142838.330862-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
There's some pretty close code here, with the exception
of RCU dereference vs. protected dereference. Refactor
this to just return a pointer and then do the deref in
the caller later.
Change-Id: Ide5315e2792da6ac66eaf852293306a3ac71ced9
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The only driver using this was iwlwifi, where we just removed
the support because it was never really used. Remove the code
from mac80211 as well.
Change-Id: I1667417a5932315ee9d81f5c233c56a354923f09
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In ieee80211_vif_use_reserved_context(), when we have an
old context and the new context's replace_state is set to
IEEE80211_CHANCTX_REPLACE_NONE, we free the old context
in ieee80211_vif_use_reserved_reassign(). Therefore, we
cannot check the old_ctx anymore, so we should set it to
NULL after this point.
However, since the new_ctx replace state is clearly not
IEEE80211_CHANCTX_REPLACES_OTHER, we're not going to do
anything else in this function and can just return to
avoid accessing the freed old_ctx.
Cc: stable@vger.kernel.org
Fixes: 5bcae31d9c ("mac80211: implement multi-vif in-place reservations")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220601091926.df419d91b165.I17a9b3894ff0b8323ce2afdb153b101124c821e5@changeid
Second set of patches for v5.19 and most likely the last one. rtw89
got support for 8852ce devices and mt76 now supports Wireless Ethernet
Dispatch.
Major changes:
cfg80211/mac80211
* support disabling EHT mode
rtw89
* add support for Realtek 8852ce devices
mt76
* Wireless Ethernet Dispatch support for flow offload
* non-standard VHT MCS10-11 support
* mt7921 AP mode support
* mt7921 ipv6 NS offload support
ath11k
* enable keepalive during WoWLAN suspend
* implement remain-on-channel support
-----BEGIN PGP SIGNATURE-----
iQFFBAABCgAvFiEEiBjanGPFTz4PRfLobhckVSbrbZsFAmKGYt4RHGt2YWxvQGtl
cm5lbC5vcmcACgkQbhckVSbrbZuK2gf/ZswLtwE2CIwrEhz/Q0MDtxUvw8ulRhKl
d+1PC+bCd/VArMESjpu7le+WNAZ1OPBWdh1pgkDm8QpCQZYe7/hRED82DB/Jw3Cl
KmOx2nr6Xb4uEN+yjqZrSXzA+Hrysy24bCQRG2CJKjdToe/fwTuRiz8WIcPKtxio
b/d/Kz0LpSoHTlU1PzqIsXulN8QUKJA4kRw70rJHAlMJVYiTBuAD+AmXfbhHD8uX
t2CJDH2fykDd1CAWFQwcmI++2tS+xclYL81vDg3aEinQJ9aNcDz06qSE5qr2H+K5
lUYy42yc+ONkIIh8LlxrLgZie7oSmkrb7aA0Zc+F0SWp/B6ZO/k8FA==
=aILH
-----END PGP SIGNATURE-----
Merge tag 'wireless-next-2022-05-19' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
Kalle Valo says:
====================
wireless-next patches for v5.19
Second set of patches for v5.19 and most likely the last one. rtw89
got support for 8852ce devices and mt76 now supports Wireless Ethernet
Dispatch.
Major changes:
cfg80211/mac80211
- support disabling EHT mode
rtw89
- add support for Realtek 8852ce devices
mt76
- Wireless Ethernet Dispatch support for flow offload
- non-standard VHT MCS10-11 support
- mt7921 AP mode support
- mt7921 ipv6 NS offload support
ath11k
- enable keepalive during WoWLAN suspend
- implement remain-on-channel support
* tag 'wireless-next-2022-05-19' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (135 commits)
iwlwifi: mei: fix potential NULL-ptr deref
iwlwifi: mei: clear the sap data header before sending
iwlwifi: mvm: remove vif_count
iwlwifi: mvm: always tell the firmware to accept MCAST frames in BSS
iwlwifi: mvm: add OTP info in case of init failure
iwlwifi: mvm: fix assert 1F04 upon reconfig
iwlwifi: fw: init SAR GEO table only if data is present
iwlwifi: mvm: clean up authorized condition
iwlwifi: mvm: use NULL instead of ERR_PTR when parsing wowlan status
iwlwifi: pcie: simplify MSI-X cause mapping
rtw89: pci: only mask out INT indicator register for disable interrupt v1
rtw89: convert rtw89_band to nl80211_band precisely
rtw89: 8852c: update txpwr tables to HALRF_027_00_052
rtw89: cfo: check mac_id to avoid out-of-bounds
rtw89: 8852c: set TX antenna path
rtw89: add ieee80211::sta_rc_update ops
wireless: Fix Makefile to be in alphabetical order
mac80211: refactor freeing the next_beacon
cfg80211: fix kernel-doc for cfg80211_beacon_data
mac80211: minstrel_ht: support ieee80211_rate_status
...
====================
Link: https://lore.kernel.org/r/20220519153334.8D051C385AA@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This patch adds support for the new struct ieee80211_rate_status and its
annotation in struct ieee80211_tx_status in minstrel_ht.
In minstrel_ht_tx_status, a check for the presence of instances of the
new struct in ieee80211_tx_status is added. Based on this, minstrel_ht
then gets and updates internal rate stats with either struct
ieee80211_rate_status or ieee80211_tx_info->status.rates.
Adjusted variants of minstrel_ht_txstat_valid, minstrel_ht_get_stats,
minstrel_{ht/vht}_get_group_idx are added which use struct
ieee80211_rate_status and struct rate_info instead of the legacy structs.
struct rate_info from cfg80211.h does not provide whether short preamble
was used for the transmission. So we retrieve this information from VIF
and STA configuration and cache it in a new flag in struct minstrel_ht_sta
per rate control instance.
Compile-Tested: current wireless-next tree with all flags on
Tested-on: Xiaomi 4A Gigabit (MediaTek MT7603E, MT7612E) with OpenWrt
Linux 5.10.113
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Link: https://lore.kernel.org/r/20220509173958.1398201-3-jelonek.jonas@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This patch adds the new struct ieee80211_rate_status and replaces
'struct rate_info *rate' in ieee80211_tx_status with pointer and length
annotation.
The struct ieee80211_rate_status allows to:
(1) receive tx power status feedback for transmit power control (TPC)
per packet or packet retry
(2) dynamic mapping of wifi chip specific multi-rate retry (mrr)
chains with different lengths
(3) increase the limit of annotatable rate indices to support
IEEE802.11ac rate sets and beyond
ieee80211_tx_info, control and status buffer, and ieee80211_tx_rate
cannot be used to achieve these goals due to fixed size limitations.
Our new struct contains a struct rate_info to annotate the rate that was
used, retry count of the rate and tx power. It is intended for all
information related to RC and TPC that needs to be passed from driver to
mac80211 and its RC/TPC algorithms like Minstrel_HT. It corresponds to
one stage in an mrr. Multiple subsequent instances of this struct can be
included in struct ieee80211_tx_status via a pointer and a length variable.
Those instances can be allocated on-stack. The former reference to a single
instance of struct rate_info is replaced with our new annotation.
An extension is introduced to struct ieee80211_hw. There are two new
members called 'tx_power_levels' and 'max_txpwr_levels_idx' acting as a
tx power level table. When a wifi device is registered, the driver shall
supply all supported power levels in this list. This allows to support
several quirks like differing power steps in power level ranges or
alike. TPC can use this for algorithm and thus be designed more abstract
instead of handling all possible step widths individually.
Further mandatory changes in status.c, mt76 and ath11k drivers due to the
removal of 'struct rate_info *rate' are also included.
status.c already uses the information in ieee80211_tx_status->rate in
radiotap, this is now changed to use ieee80211_rate_status->rate_idx.
mt76 driver already uses struct rate_info to pass the tx rate to status
path. The new members of the ieee80211_tx_status are set to NULL and 0
because the previously passed rate is not relevant to rate control and
accurate information is passed via tx_info->status.rates.
For ath11k, the txrate can be passed via this struct because ath11k uses
firmware RC and thus the information does not interfere with software RC.
Compile-Tested: current wireless-next tree with all flags on
Tested-on: Xiaomi 4A Gigabit (MediaTek MT7603E, MT7612E) with OpenWrt
Linux 5.10.113
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
Link: https://lore.kernel.org/r/20220509173958.1398201-2-jelonek.jonas@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Fill all requested rates (in case of ath9k 4 rate slots are
available, so fill all 4 instead of only 3), improves throughput in
noisy environment.
Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Link: https://lore.kernel.org/r/20220402153014.31332-2-ps.report@gmx.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
AP may run out of BSS color after color collision
detection event from driver.
Disable BSS color collision detection if no free colors are
available based on bss color disabled bit sent as a part of
NL80211_ATTR_HE_BSS_COLOR attribute sent in
NL80211_CMD_SET_BEACON.
It can be reenabled once new color is available.
Signed-off-by: Lavanya Suresh <lavaks@codeaurora.org>
Signed-off-by: Rameshkumar Sundaram <quic_ramess@quicinc.com>
Link: https://lore.kernel.org/r/1649867295-7204-3-git-send-email-quic_ramess@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
NL80211_ATTR_HE_BSS_COLOR attribute can be included in both
NL80211_CMD_START_AP and NL80211_CMD_SET_BEACON commands.
Move he_bss_color from cfg80211_ap_settings to cfg80211_beacon_data
and parse NL80211_ATTR_HE_BSS_COLOR as a part of nl80211_parse_beacon()
to have bss color settings parsed for both start ap and set beacon
commands.
Add a new flag he_bss_color_valid to indicate whether
NL80211_ATTR_HE_BSS_COLOR attribute is included.
Signed-off-by: Rameshkumar Sundaram <quic_ramess@quicinc.com>
Link: https://lore.kernel.org/r/1649867295-7204-2-git-send-email-quic_ramess@quicinc.com
[fix build ...]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We currently track whether we're associated and which the
BSS is in the same variable (ifmgd->associated), but for
MLD we'll need to move the BSS pointer to be per link,
while the question whether we're associated or not is for
the whole interface.
Add ifmgd->assoc_bss that stores the pointer and change
ifmgd->associated to be just a bool, so the question of
whether we're associated can continue working after MLD
rework, without requiring changes, while the BSS pointer
will have to be changed/used checked per link.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We don't need to copy this locally, we now only use the
variable to print before doing other things.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We never use the bssid argument to ieee80211_sta_connection_lost()
so we might as well just remove it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There's no need to look it up from the ifmgd->associated
BSS configuration, we already maintain a local copy since
commit b0140fda62 ("mac80211: mlme: save ssid info to
ieee80211_bss_conf while assoc").
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since we always track the BSSID there when we get associated,
these are equivalent, but ifmgd->bssid saves a dereference and
thus makes the code a bit smaller, and more readable.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This code is tightly coupled to the sdata->u.mgd data
structure, so there's no reason for it to be in utils.
Move it to mlme.c.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Ping-Ke's previous patch adjusted the CCMP AAD construction
to properly take the order bit into account, but failed to
update the (identical) GCMP AAD construction as well.
Unify the AAD construction between the two cases.
Reported-by: Jouni Malinen <j@w1.fi>
Link: https://lore.kernel.org/r/20220506105150.51d66e2a6f3c.I65f12be82c112365169e8a9f48c7a71300e814b9@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In client mode, we can't connect to hidden SSID APs or SSIDs not advertised
in beacons on DFS channels, since we're forced to passive scan. Fix this by
sending out a probe request immediately after the first beacon, if active
scan was requested by the user.
Cc: stable@vger.kernel.org
Reported-by: Catrinel Catrinescu <cc@80211.de>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20220420104907.36275-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If statement is meaningless because the code will goto out regardless of
whether fast_tx is NULL or not.
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Link: https://lore.kernel.org/r/20220413091902.27438-1-hbh25y@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Follow IEEE 802.11-21 that HTC subfield masked to 0 for all data frames
containing a QoS Control field. It also defines the AAD length depends on
QC and A4 fields, so change logic to determine length accordingly.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://lore.kernel.org/r/20220324004816.6202-1-pkshih@realtek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Currently MBSSID parameters in struct ieee80211_bss_conf
are not reset upon connection. This could be problematic
with some drivers in a scenario where the device first
connects to a non-transmit BSS and then connects to a
transmit BSS of a Multi BSS AP. The MBSSID parameters
which are set after connecting to a non-transmit BSS will
not be reset and the same parameters will be passed on to
the driver during the subsequent connection to a transmit
BSS of a Multi BSS AP.
For example, firmware running on the ath11k device uses the
Multi BSS data for tracking the beacon of a non-transmit BSS
and reports the driver when there is a beacon miss. If we do
not reset the MBSSID parameters during the subsequent
connection to a transmit BSS, then the driver would have
wrong MBSSID data and FW would be looking for an incorrect
BSSID in the MBSSID beacon of a Multi BSS AP and reports
beacon loss leading to an unstable connection.
Reset the MBSSID parameters upon every connection to solve this
problem.
Fixes: 78ac51f815 ("mac80211: support multi-bssid")
Signed-off-by: Manikanta Pubbisetty <quic_mpubbise@quicinc.com>
Link: https://lore.kernel.org/r/20220428052744.27040-1-quic_mpubbise@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When the QoS ack policy was set to non explicit / psmp ack, frames are treated
as not being part of a BA session, which causes extra latency on reordering.
Fix this by only bypassing reordering for packets with no-ack policy
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20220420105038.36443-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
First set of patches for v5.19 and this is a big one. We have two new
drivers, a change in mac80211 STA API affecting most drivers and
ath11k getting support for WCN6750. And as usual lots of fixes and
cleanups all over.
Major changes:
new drivers
* wfx: silicon labs devices
* plfxlc: pureLiFi X, XL, XC devices
mac80211
* host based BSS color collision detection
* prepare sta handling for IEEE 802.11be Multi-Link Operation (MLO) support
rtw88
* support TP-Link T2E devices
rtw89
* support firmware crash simulation
* preparation for 8852ce hardware support
ath11k
* Wake-on-WLAN support for QCA6390 and WCN6855
* device recovery (firmware restart) support for QCA6390 and WCN6855
* support setting Specific Absorption Rate (SAR) for WCN6855
* read country code from SMBIOS for WCN6855/QCA6390
* support for WCN6750
wcn36xx
* support for transmit rate reporting to user space
-----BEGIN PGP SIGNATURE-----
iQFFBAABCgAvFiEEiBjanGPFTz4PRfLobhckVSbrbZsFAmJxS2sRHGt2YWxvQGtl
cm5lbC5vcmcACgkQbhckVSbrbZuNgwf9H2oxMKLKrlFoX1qHtNBwZuHS6IERhOkM
NI9DjS4MCyiUSbA5r3sWlpqXQeKIbG/05gUZ6Y0ircGFwnAGjZ6isPwo8pKFgbh5
QljXQjUTHbkshrXW8K+VGJxw4F1oiPlOGUDVdXPy2FLx5ZvBlaUV2rWQUzsWX9I0
EnrM6ygHBVejVYDe+JSkb1gzb/07xuZN410IJPuZTPKJfYiE0oGU3zpTbExFitaz
ObjfFUWqHrVue525WFAJ9Dbk8kYEKyMThr7rkkWekYJjujJLJo0qhEiZVZu0eEsk
Vq4PdKmQAqlgbShQ/3Mv8BRsSH2wy62+zKjPWL+8t4Gmm9DbLu+++A==
=T7Ii
-----END PGP SIGNATURE-----
Merge tag 'wireless-next-2022-05-03' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
Kalle Valo says:
====================
wireless-next patches for v5.19
First set of patches for v5.19 and this is a big one. We have two new
drivers, a change in mac80211 STA API affecting most drivers and
ath11k getting support for WCN6750. And as usual lots of fixes and
cleanups all over.
Major changes:
new drivers
- wfx: silicon labs devices
- plfxlc: pureLiFi X, XL, XC devices
mac80211
- host based BSS color collision detection
- prepare sta handling for IEEE 802.11be Multi-Link Operation (MLO) support
rtw88
- support TP-Link T2E devices
rtw89
- support firmware crash simulation
- preparation for 8852ce hardware support
ath11k
- Wake-on-WLAN support for QCA6390 and WCN6855
- device recovery (firmware restart) support for QCA6390 and WCN6855
- support setting Specific Absorption Rate (SAR) for WCN6855
- read country code from SMBIOS for WCN6855/QCA6390
- support for WCN6750
wcn36xx
- support for transmit rate reporting to user space
* tag 'wireless-next-2022-05-03' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (228 commits)
rtw89: 8852c: rfk: add DPK
rtw89: 8852c: rfk: add IQK
rtw89: 8852c: rfk: add RX DCK
rtw89: 8852c: rfk: add RCK
rtw89: 8852c: rfk: add TSSI
rtw89: 8852c: rfk: add LCK
rtw89: 8852c: rfk: add DACK
rtw89: 8852c: rfk: add RFK tables
plfxlc: fix le16_to_cpu warning for beacon_interval
rtw88: remove a copy of the NAPI_POLL_WEIGHT define
carl9170: tx: fix an incorrect use of list iterator
wil6210: use NAPI_POLL_WEIGHT for napi budget
ath10k: remove a copy of the NAPI_POLL_WEIGHT define
ath11k: Add support for WCN6750 device
ath11k: Datapath changes to support WCN6750
ath11k: HAL changes to support WCN6750
ath11k: Add QMI changes for WCN6750
ath11k: Fetch device information via QMI for WCN6750
ath11k: Add register access logic for WCN6750
ath11k: Add HW params for WCN6750
...
====================
Link: https://lore.kernel.org/r/20220503153622.C1671C385A4@smtp.kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Currently in mac80211 each STA object is represented
using sta_info datastructure with the associated
STA specific information and drivers access ieee80211_sta
part of it.
With MLO (Multi Link Operation) support being added
in 802.11be standard, though the association is logically
with a single Multi Link capable STA, at the physical level
communication can happen via different advertised
links (uniquely identified by Channel, operating class,
BSSID) and hence the need to handle multiple link
STA parameters within a composite sta_info object
called the MLD STA. The different link STA part of
MLD STA are identified using the link address which can
be same or different as the MLD STA address and unique
link id based on the link vif.
To support extension of such a model, the sta_info
datastructure is modified to hold multiple link STA
objects with link specific params currently within
sta_info moved to this new structure. Similarly this is
done for ieee80211_sta as well which will be accessed
within mac80211 as well as by drivers, hence trivial
driver changes are expected to support this.
For current non MLO supported drivers, only one link STA
is present and link information is accessed via 'deflink'
member.
For MLO drivers, we still need to define the APIs etc. to
get the correct link ID and access the correct part of
the station info.
Currently in mac80211, all link STA info are accessed directly
via deflink. These will be updated to access via link pointers
indexed by link id with MLO support patches, with link id
being 0 for non MLO supported cases.
Except for couple of macro related changes, below spatch takes
care of updating mac80211 and driver code to access to the
link STA info via deflink.
@ieee80211_sta@
struct ieee80211_sta *s;
struct sta_info *si;
identifier var = {supp_rates, ht_cap, vht_cap, he_cap, he_6ghz_capa, eht_cap, rx_nss, bandwidth, txpwr};
@@
(
s->
- var
+ deflink.var
|
si->sta.
- var
+ deflink.var
)
@sta_info@
struct sta_info *si;
identifier var = {gtk, pcpu_rx_stats, rx_stats, rx_stats_avg, status_stats, tx_stats, cur_max_bandwidth};
@@
(
si->
- var
+ deflink.var
)
Signed-off-by: Sriram R <quic_srirrama@quicinc.com>
Link: https://lore.kernel.org/r/1649086883-13246-1-git-send-email-quic_srirrama@quicinc.com
[remove MLO-drivers notes from commit message, not clear yet; run spatch]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add ieee80211_rx_check_bss_color_collision routine in order to introduce
BSS color collision detection in mac80211 if it is not supported in HW/FW
(e.g. for mt7915 chipset).
Add IEEE80211_HW_DETECTS_COLOR_COLLISION flag to let the driver notify
BSS color collision detection is supported in HW/FW. Set this for ath11k
which apparently didn't need this code.
Tested-by: Peter Chiu <Chui-Hao.Chiu@mediatek.com>
Co-developed-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/a05eeeb1841a84560dc5aaec77894fcb69a54f27.1648204871.git.lorenzo@kernel.org
[clarify commit message a bit, move flag to mac80211]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Even if it is not a real issue since ieee80211_set_after_csa_beacon()
or ieee80211_set_after_color_change_beacon() are run only when csa or bcc
is active, move next_beacon check before running ieee80211_assign_beacon
routine.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/041764ed7e9781bcee66c33b41f1365aa4205932.1649327683.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Don't use sizeof(pointer) when calculating scnprintf offset.
Fixes: 01f84f0ed3 ("mac80211: reduce stack usage in debugfs")
Signed-off-by: Ben Greear <greearb@candelatech.com>
Link: https://lore.kernel.org/r/20220406175659.20611-1-greearb@candelatech.com
[correct the Fixes tag]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Trigger ieee80211_csa_finish() on the non-transmitting interfaces
when channel switch concludes on the transmitting interface.
Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Co-developed-by: Aloka Dixit <alokad@codeaurora.org>
Signed-off-by: Aloka Dixit <alokad@codeaurora.org>
Signed-off-by: John Crispin <john@phrozen.org>
Link: https://lore.kernel.org/r/6fde4d7f9fa387494f46a7aa4a584478dcda06f1.1645702516.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add new fields in struct beacon_data to store all MBSSID elements.
Generate a beacon template which includes all MBSSID elements.
Move CSA offset to reflect the MBSSID element length.
Co-developed-by: Aloka Dixit <alokad@codeaurora.org>
Signed-off-by: Aloka Dixit <alokad@codeaurora.org>
Co-developed-by: John Crispin <john@phrozen.org>
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Tested-by: Money Wang <money.wang@mediatek.com>
Link: https://lore.kernel.org/r/5322db3c303f431adaf191ab31c45e151dde5465.1645702516.git.lorenzo@kernel.org
[small cleanups]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* add BCM43454/6 support
rtw89
* add support for 160 MHz channels and 6 GHz band
* hardware scan support
iwlwifi
* support UHB TAS enablement via BIOS
* remove a bunch of W=1 warnings
* add support for channel switch offload
* support 32 Rx AMPDU sessions in newer devices
* add support for a couple of new devices
* add support for band disablement via BIOS
mt76
* mt7915 thermal management improvements
* SAR support for more mt76 drivers
* mt7986 wmac support on mt7915
ath11k
* debugfs interface to configure firmware debug log level
* debugfs interface to test Target Wake Time (TWT)
* provide 802.11ax High Efficiency (HE) data via radiotap
ath9k
* use hw_random API instead of directly dumping into random.c
wcn36xx
* fix wcn3660 to work on 5 GHz band
ath6kl
* add device ID for WLU5150-D81
cfg80211/mac80211
* initial EHT (from 802.11be) support
(EHT rates, 320 MHz, larger block-ack)
* support disconnect on HW restart
-----BEGIN PGP SIGNATURE-----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=ccps
-----END PGP SIGNATURE-----
Merge tag 'wireless-next-2022-03-11' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
Johannes Berg says:
====================
brcmfmac
* add BCM43454/6 support
rtw89
* add support for 160 MHz channels and 6 GHz band
* hardware scan support
iwlwifi
* support UHB TAS enablement via BIOS
* remove a bunch of W=1 warnings
* add support for channel switch offload
* support 32 Rx AMPDU sessions in newer devices
* add support for a couple of new devices
* add support for band disablement via BIOS
mt76
* mt7915 thermal management improvements
* SAR support for more mt76 drivers
* mt7986 wmac support on mt7915
ath11k
* debugfs interface to configure firmware debug log level
* debugfs interface to test Target Wake Time (TWT)
* provide 802.11ax High Efficiency (HE) data via radiotap
ath9k
* use hw_random API instead of directly dumping into random.c
wcn36xx
* fix wcn3660 to work on 5 GHz band
ath6kl
* add device ID for WLU5150-D81
cfg80211/mac80211
* initial EHT (from 802.11be) support
(EHT rates, 320 MHz, larger block-ack)
* support disconnect on HW restart
* tag 'wireless-next-2022-03-11' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (247 commits)
mac80211: Add support to trigger sta disconnect on hardware restart
mac80211: fix potential double free on mesh join
mac80211: correct legacy rates check in ieee80211_calc_rx_airtime
nl80211: fix typo of NL80211_IF_TYPE_OCB in documentation
mac80211: Use GFP_KERNEL instead of GFP_ATOMIC when possible
mac80211: replace DEFINE_SIMPLE_ATTRIBUTE with DEFINE_DEBUGFS_ATTRIBUTE
rtw89: 8852c: process logic efuse map
rtw89: 8852c: process efuse of phycap
rtw89: support DAV efuse reading operation
rtw89: 8852c: add chip::dle_mem
rtw89: add page_regs to handle v1 chips
rtw89: add chip_info::{h2c,c2h}_reg to support more chips
rtw89: add hci_func_en_addr to support variant generation
rtw89: add power_{on/off}_func
rtw89: read chip version depends on chip ID
rtw89: pci: use a struct to describe all registers address related to DMA channel
rtw89: pci: add V1 of PCI channel address
rtw89: pci: add struct rtw89_pci_info
rtw89: 8852c: add 8852c empty files
MAINTAINERS: add devicetree bindings entry for mt76
...
====================
Link: https://lore.kernel.org/r/20220311124029.213470-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Currently in case of target hardware restart, we just reconfig and
re-enable the security keys and enable the network queues to start
data traffic back from where it was interrupted.
Many ath10k wifi chipsets have sequence numbers for the data
packets assigned by firmware and the mac sequence number will
restart from zero after target hardware restart leading to mismatch
in the sequence number expected by the remote peer vs the sequence
number of the frame sent by the target firmware.
This mismatch in sequence number will cause out-of-order packets
on the remote peer and all the frames sent by the device are dropped
until we reach the sequence number which was sent before we restarted
the target hardware
In order to fix this, we trigger a sta disconnect, in case of target
hw restart. After this there will be a fresh connection and thereby
avoiding the dropping of frames by remote peer.
The right fix would be to pull the entire data path into the host
which is not feasible or would need lots of complex changes and
will still be inefficient.
Tested on ath10k using WCN3990, QCA6174
Signed-off-by: Youghandhar Chintala <youghand@codeaurora.org>
Link: https://lore.kernel.org/r/20220308115325.5246-2-youghand@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
While commit 6a01afcf84 ("mac80211: mesh: Free ie data when leaving
mesh") fixed a memory leak on mesh leave / teardown it introduced a
potential memory corruption caused by a double free when rejoining the
mesh:
ieee80211_leave_mesh()
-> kfree(sdata->u.mesh.ie);
...
ieee80211_join_mesh()
-> copy_mesh_setup()
-> old_ie = ifmsh->ie;
-> kfree(old_ie);
This double free / kernel panics can be reproduced by using wpa_supplicant
with an encrypted mesh (if set up without encryption via "iw" then
ifmsh->ie is always NULL, which avoids this issue). And then calling:
$ iw dev mesh0 mesh leave
$ iw dev mesh0 mesh join my-mesh
Note that typically these commands are not used / working when using
wpa_supplicant. And it seems that wpa_supplicant or wpa_cli are going
through a NETDEV_DOWN/NETDEV_UP cycle between a mesh leave and mesh join
where the NETDEV_UP resets the mesh.ie to NULL via a memcpy of
default_mesh_setup in cfg80211_netdev_notifier_call, which then avoids
the memory corruption, too.
The issue was first observed in an application which was not using
wpa_supplicant but "Senf" instead, which implements its own calls to
nl80211.
Fixing the issue by removing the kfree()'ing of the mesh IE in the mesh
join function and leaving it solely up to the mesh leave to free the
mesh IE.
Cc: stable@vger.kernel.org
Fixes: 6a01afcf84 ("mac80211: mesh: Free ie data when leaving mesh")
Reported-by: Matthias Kretschmer <mathias.kretschmer@fit.fraunhofer.de>
Signed-off-by: Linus Lüssing <ll@simonwunderlich.de>
Tested-by: Mathias Kretschmer <mathias.kretschmer@fit.fraunhofer.de>
Link: https://lore.kernel.org/r/20220310183513.28589-1-linus.luessing@c0d3.blue
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There are no legacy rates on 60GHz or sub-1GHz band, so modify the check.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: MeiChia Chiu <MeiChia.Chiu@mediatek.com>
Link: https://lore.kernel.org/r/20220308021645.16272-1-MeiChia.Chiu@mediatek.com
[Ghz -> GHz]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Previous memory allocations in this function already use GFP_KERNEL, so
use __dev_alloc_skb() and an explicit GFP_KERNEL instead of an implicit
GFP_ATOMIC.
This gives more opportunities of successful allocation.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/194a0e2ff00c3fae88cc9fba47431747360c8242.1645345378.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When we get anti-clogging token required (added by the commit
mentioned below), or the other status codes added by the later
commit 4e56cde15f ("mac80211: Handle special status codes in
SAE commit") we currently just pretend (towards the internal
state machine of authentication) that we didn't receive anything.
This has the undesirable consequence of retransmitting the prior
frame, which is not expected, because the timer is still armed.
If we just disarm the timer at that point, it would result in
the undesirable side effect of being in this state indefinitely
if userspace crashes, or so.
So to fix this, reset the timer and set a new auth_data->waiting
in order to have no more retransmissions, but to have the data
destroyed when the timer actually fires, which will only happen
if userspace didn't continue (i.e. crashed or abandoned it.)
Fixes: a4055e74a2 ("mac80211: Don't destroy auth data in case of anti-clogging")
Reported-by: Jouni Malinen <j@w1.fi>
Link: https://lore.kernel.org/r/20220224103932.75964e1d7932.Ia487f91556f29daae734bf61f8181404642e1eec@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In EHT requesting aggregation with 1K needs the use of extended
the AddBA element for the buffer size, so add the logic to parse
it and make sure it's in limits of the EHT aggregation size.
Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Link: https://lore.kernel.org/r/20220214173004.8209cae9d9e4.I434f5588602f83b4e658c660120040913b3a2e3d@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We add the fields for parsing extended ADDBA request/respond,
and new max 1K aggregation for limit ADDBA request/respond.
Adjust drivers to use the proper macro, IEEE80211_MAX_AMPDU_BUF ->
IEEE80211_MAX_AMPDU_BUF_HE.
Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Link: https://lore.kernel.org/r/20220214173004.b8b447ce95b7.I0ee2554c94e89abc7a752b0f7cc7fd79c273efea@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There are two problems with the current code that have been highlighted
with the AQL feature that is now enbaled by default.
First problem is in ieee80211_rx_h_mesh_fwding(),
ieee80211_select_queue_80211() is used on received packets to choose
the sending AC queue of the forwarding packet although this function
should only be called on TX packet (it uses ieee80211_tx_info).
This ends with forwarded mesh packets been sent on unrelated random AC
queue. To fix that, AC queue can directly be infered from skb->priority
which has been extracted from QOS info (see ieee80211_parse_qos()).
Second problem is the value of queue_mapping set on forwarded mesh
frames via skb_set_queue_mapping() is not the AC of the packet but a
hardware queue index. This may or may not work depending on AC to HW
queue mapping which is driver specific.
Both of these issues lead to improper AC selection while forwarding
mesh packets but more importantly due to improper airtime accounting
(which is done on a per STA, per AC basis) caused traffic stall with
the introduction of AQL.
Fixes: cf44012810 ("mac80211: fix unnecessary frame drops in mesh fwding")
Fixes: d3c1597b8d ("mac80211: fix forwarded mesh frame queue mapping")
Co-developed-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Nicolas Escande <nico.escande@gmail.com>
Link: https://lore.kernel.org/r/20220214173214.368862-1-nico.escande@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If an MFP station isn't authorized, the receiver will (or
at least should) drop the action frame since it's a robust
management frame, but if we're not authorized we haven't
installed keys yet. Refuse attempts to start a session as
they'd just time out.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20220203201528.ff4d5679dce9.I34bb1f2bc341e161af2d6faf74f91b332ba11285@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
mac80211 set capability NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211
to upper layer by default. That means we should pass EAPoL packets through
nl80211 path only, and should not send the EAPoL skb to netdevice diretly.
At the meanwhile, wpa_supplicant would not register sock to listen EAPoL
skb on the netdevice.
However, there is no control_port_protocol handler in mac80211 for 802.3 RX
packets, mac80211 driver would pass up the EAPoL rekey frame to netdevice
and wpa_supplicant would be never interactive with this kind of packets,
if SUPPORTS_RX_DECAP_OFFLOAD is enabled. This causes STA always rekey fail
if EAPoL frame go through 802.3 path.
To avoid this problem, align the same process as 802.11 type to handle
this frame before put it into network stack.
This also addresses a potential security issue in 802.3 RX mode that was
previously fixed in commit a8c4d76a8d ("mac80211: do not accept/forward
invalid EAPOL frames").
Cc: stable@vger.kernel.org # 5.12+
Fixes: 80a915ec44 ("mac80211: add rx decapsulation offload support")
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Link: https://lore.kernel.org/r/6889c9fced5859ebb088564035f84fd0fa792a49.1644680751.git.deren.wu@mediatek.com
[fix typos, update comment and add note about security issue]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Fix the following coccicheck warnings:
net/mac80211/util.c:3265:3: warning: Value stored to 'channel_type' is
never read [clang-analyzer-deadcode.DeadStores].
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/20220113161557.129427-1-jiapeng.chong@linux.alibaba.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We check ieee80211_vif_is_mesh() at the top if() block,
there's no need to check for it again.
Signed-off-by: Baligh Gasmi <gasmibal@gmail.com>
Link: https://lore.kernel.org/r/20220203153035.198697-1-gasmibal@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The size of the status_driver_data field was not adjusted when
the is_valid_ack_signal field was added.
Since the size of struct ieee80211_tx_info is limited, replace
the is_valid_ack_signal field with a flags field, and adjust the
struct size accordingly.
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220202104617.0ff363d4fa56.I45792c0187034a6d0e1c99a7db741996ef7caba3@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We validate that AP has mandatory rates set in HE capabilities.
Also we make sure AP is consistent with itself on rates set in HE basic
rates required joining the BSS and rates set in HE capabilities.
Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220202104617.7023450fdf16.I194df59252097ba25a0a543456d4350f1607a538@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
IEEE80211_VHT_MCS_NOT_SUPPORTED and IEEE80211_HE_MCS_NOT_SUPPORTED
have the same value so no real bug, but for code integrity use the
HE macros for parsing HE capabilities.
Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220202104617.e974b7b3b217.I732cc7f770c7fa06e4840adb5d45d7ee99ac8eb5@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There's currently only one driver that reports CHECKSUM_COMPLETE,
that is iwlwifi. The current hardware there calculates checksum
after the SNAP header, but only RFC 1042 (and some other cases,
but replicating the exact hardware logic for corner cases in the
driver seemed awkward.)
Newer generations of hardware will checksum _including_ the SNAP,
which makes things easier.
To handle that, simply always assume the checksum _includes_ the
SNAP header, which this patch does, requiring to first add it
for older iwlwifi hardware, and then remove it again later on
conversion.
Alternatively, we could have:
1) Always assumed the checksum starts _after_ the SNAP header;
the problem with this is that we'd have to replace the exact
"what is the SNAP" check in iwlwifi that cfg80211 has.
2) Made it configurable with some flag, but that seemed like too
much complexity.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220202104617.230736e19e0e.I3e6745873585ad943c152fab9e23b5221f17a95f@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In UHB connection we don't have any HT/VHT elemens so in order to
calculate the max RX-NSS we need also to look at HE capa element, this
causes to limit us to max rx nss in UHB to 1.
Also anyway we need to look at HE max rx NSS and not only at HT/VHT
capa to determine the max rx nss over the connection.
Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220202104617.3713e0dea5dd.I3b9a15b4c53465c3f86f35459e9dc15ae4ea2abd@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
If we're limiting bandwidth for some reason such as regulatory
restrictions, then advertise that limitation just like we do
for VHT today, so the AP is aware we cannot use the higher BW
it might be using.
Fixes: 41cbb0f5a2 ("mac80211: add support for HE")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220202104617.70c8e3e7ee76.If317630de69ff1146bec7d47f5b83038695eb71d@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
As the possible failure of the alloc, the ifmgd->assoc_req_ies might be
NULL pointer returned from kmemdup().
Therefore it might be better to free the skb and return error in order
to fail the association, like ieee80211_assoc_success().
Also, the caller, ieee80211_do_assoc(), needs to deal with the return
value from ieee80211_send_assoc().
Fixes: 4d9ec73d2b ("cfg80211: Report Association Request frame IEs in association events")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20220105081559.2387083-1-jiasheng@iscas.ac.cn
[fix some paths to be errors, not success]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
ieee80211_iterate_active_interfaces() and
ieee80211_iterate_active_interfaces_atomic() already exist, where the
former allows the iterator function to sleep. Add
ieee80211_iterate_stations() which is similar to
ieee80211_iterate_stations_atomic() but allows the iterator to sleep.
This is needed for adding SDIO support to the rtw88 driver. Some
interators there are reading or writing registers. With the SDIO ops
(sdio_readb, sdio_writeb and friends) this means that the iterator
function may sleep.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20211228211501.468981-2-martin.blumenstingl@googlemail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Some AP can possibly try non-standard VHT rate and mac80211 warns and drops
packets, and leads low TCP throughput.
Rate marked as a VHT rate but data is invalid: MCS: 10, NSS: 2
WARNING: CPU: 1 PID: 7817 at net/mac80211/rx.c:4856 ieee80211_rx_list+0x223/0x2f0 [mac8021
Since commit c27aa56a72 ("cfg80211: add VHT rate entries for MCS-10 and MCS-11")
has added, mac80211 adds this support as well.
After this patch, throughput is good and iw can get the bitrate:
rx bitrate: 975.1 MBit/s VHT-MCS 10 80MHz short GI VHT-NSS 2
or
rx bitrate: 1083.3 MBit/s VHT-MCS 11 80MHz short GI VHT-NSS 2
Buglink: https://bugzilla.suse.com/show_bug.cgi?id=1192891
Reported-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://lore.kernel.org/r/20220103013623.17052-1-pkshih@realtek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Syzbot hit NULL deref in rhashtable_free_and_destroy(). The problem was
in mesh_paths and mpp_paths being NULL.
mesh_pathtbl_init() could fail in case of memory allocation failure, but
nobody cared, since ieee80211_mesh_init_sdata() returns void. It led to
leaving 2 pointers as NULL. Syzbot has found null deref on exit path,
but it could happen anywhere else, because code assumes these pointers are
valid.
Since all ieee80211_*_setup_sdata functions are void and do not fail,
let's embedd mesh_paths and mpp_paths into parent struct to avoid
adding error handling on higher levels and follow the pattern of others
setup_sdata functions
Fixes: 60854fd945 ("mac80211: mesh: convert path table to rhashtable")
Reported-and-tested-by: syzbot+860268315ba86ea6b96b@syzkaller.appspotmail.com
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Link: https://lore.kernel.org/r/20211230195547.23977-1-paskripkin@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Clang static analysis reports this warnings
mlme.c:5332:7: warning: Branch condition evaluates to a
garbage value
have_higher_than_11mbit)
^~~~~~~~~~~~~~~~~~~~~~~
have_higher_than_11mbit is only set to true some of the time in
ieee80211_get_rates() but is checked all of the time. So
have_higher_than_11mbit needs to be initialized to false.
Fixes: 5d6a1b069b ("mac80211: set basic rates earlier")
Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/r/20211223162848.3243702-1-trix@redhat.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* ndo_fill_forward_path support in mac80211, to let
drivers use it
* association comeback notification for userspace,
to be able to react more sensibly to long delays
* support for background radar detection hardware
in some chipsets
* SA Query Procedures offload on the AP side
* more logging if we find problems with HT/VHT/HE
* various cleanups and minor fixes
-----BEGIN PGP SIGNATURE-----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=u1jf
-----END PGP SIGNATURE-----
Merge tag 'mac80211-next-for-net-next-2021-12-21' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
This time we have:
* ndo_fill_forward_path support in mac80211, to let drivers use it
* association comeback notification for userspace, to be able
to react more sensibly to long delays
* support for background radar detection hardware in some chipsets
* SA Query Procedures offload on the AP side
* more logging if we find problems with HT/VHT/HE
* various cleanups and minor fixes
Conflicts:
net/wireless/reg.c:
e08ebd6d7b ("cfg80211: Acquire wiphy mutex on regulatory work")
701fdfe348 ("cfg80211: Enable regulatory enforcement checks for drivers supporting mesh iface")
https://lore.kernel.org/r/20211221111950.57ecc6a7@canb.auug.org.au
drivers/net/wireless/ath/ath10k/wmi.c:
7f599aeccb ("cfg80211: Use the HE operation IE to determine a 6GHz BSS channel")
3bf2537ec2 ("ath10k: drop beacon and probe response which leak from other channel")
https://lore.kernel.org/r/20211221115004.1cd6b262@canb.auug.org.au
* tag 'mac80211-next-for-net-next-2021-12-21' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next: (32 commits)
cfg80211: Enable regulatory enforcement checks for drivers supporting mesh iface
rfkill: allow to get the software rfkill state
cfg80211: refactor cfg80211_get_ies_channel_number()
nl82011: clarify interface combinations wrt. channels
nl80211: Add support to offload SA Query procedures for AP SME device
nl80211: Add support to set AP settings flags with single attribute
mac80211: add more HT/VHT/HE state logging
cfg80211: Use the HE operation IE to determine a 6GHz BSS channel
cfg80211: rename offchannel_chain structs to background_chain to avoid confusion with ETSI standard
mac80211: Notify cfg80211 about association comeback
cfg80211: Add support for notifying association comeback
mac80211: introduce channel switch disconnect function
cfg80211: Fix order of enum nl80211_band_iftype_attr documentation
cfg80211: simplify cfg80211_chandef_valid()
mac80211: Remove a couple of obsolete TODO
mac80211: fix FEC flag in radio tap header
mac80211: use coarse boottime for airtime fairness code
ieee80211: change HE nominal packet padding value defines
cfg80211: use ieee80211_bss_get_elem() instead of _get_ie()
mac80211: Use memset_after() to clear tx status
...
====================
Link: https://lore.kernel.org/r/20211221112532.28708-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
ETSI standard defines "Offchannel CAC" as:
"Off-Channel CAC is performed by a number of non-continuous checks
spread over a period in time. This period, which is required to
determine the presence of radar signals, is defined as the Off-Channel
CAC Time..
Minimum Off-Channel CAC Time 6 minutes and Maximum Off-Channel CAC Time
4 hours..".
mac80211 implementation refers to a dedicated hw chain used for continuous
radar monitoring. Rename offchannel_* references to background_* in
order to avoid confusion with ETSI standard.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/4204cc1d648d76b44557981713231e030a3bd991.1638190762.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Introduce a disconnect function that can be used when a
channel switch error occurs. The channel switch can request to
block the tx, and so, we need to make sure we do not send a deauth
frame in this case.
Signed-off-by: Nathan Errera <nathan.errera@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211129152938.cd2a615a0702.I9edb14785586344af17644b610ab5be109dcef00@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In mac80211, while building radiotap header
IEEE80211_RADIOTAP_MCS_HAVE_FEC flag is missing when LDPC enabled
from driver, hence LDPC is not updated properly in radiotap header.
Fix that by adding HAVE_FEC flag while building radiotap header.
Signed-off-by: P Praneesh <quic_ppranees@quicinc.com>
Link: https://lore.kernel.org/r/1638294648-844-2-git-send-email-quic_ppranees@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The time values used by the airtime fairness code only need to be accurate
enough to cover station activity detection.
Using ktime_get_coarse_boottime_ns instead of ktime_get_boottime_ns will
drop the accuracy down to jiffies intervals, but at the same time saves
a lot of CPU cycles in a hot path
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/r/20211217114258.14619-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When we reconfigure, the driver might do some things to complete
the reconfiguration. It's strange and could be broken in some
cases because we restart other works (e.g. remain-on-channel and
TX) before this happens, yet only start queues later.
Change this to do the reconfig complete when reconfiguration is
actually complete, not when we've already started doing other
things again.
For iwlwifi, this should fix a race where the reconfig can race
with TX, for ath10k and ath11k that also use this it won't make
a difference because they just start queues there, and mac80211
also stopped the queues and will restart them later as before.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211129152938.cab99f22fe19.Iefe494687f15fd85f77c1b989d1149c8efdfdc36@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Mark TXQs as having seen transmit while they were stopped if
we bail out of drv_wake_tx_queue() due to reconfig, so that
the queue wake after this will make them catch up. This is
particularly necessary for when TXQs are used for management
packets since those TXQs won't see a lot of traffic that'd
make them catch up later.
Cc: stable@vger.kernel.org
Fixes: 4856bfd230 ("mac80211: do not call driver wake_tx_queue op during reconfig")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211129152938.4573a221c0e1.I0d1d5daea3089be3fc0dccc92991b0f8c5677f0c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Currently channel context is updated only after station got an update about
new assoc state, this results in station using the old channel context.
Fix this by moving the update channel context before updating station,
enabling the driver to immediately use the updated channel context in
the new assoc state.
Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211129152938.1c80c17ffd8a.I94ae31378b363c1182cfdca46c4b7e7165cff984@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We should be doing the HE capabilities lookup based on the full
interface type so if P2P doesn't have HE but client has it doesn't
get confused. Fix that.
Fixes: 2ab4587675 ("mac80211: add support for the ADDBA extension element")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211129152938.010fc1d61137.If3a468145f29d670cb00a693bed559d8290ba693@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When we call ieee80211_agg_start_txq(), that will in turn call
schedule_and_wake_txq(). Called from ieee80211_stop_tx_ba_cb()
this is done under sta->lock, which leads to certain circular
lock dependencies, as reported by Chris Murphy:
https://lore.kernel.org/r/CAJCQCtSXJ5qA4bqSPY=oLRMbv-irihVvP7A2uGutEbXQVkoNaw@mail.gmail.com
In general, ieee80211_agg_start_txq() is usually not called
with sta->lock held, only in this one place. But it's always
called with sta->ampdu_mlme.mtx held, and that's therefore
clearly sufficient.
Change ieee80211_stop_tx_ba_cb() to also call it without the
sta->lock held, by factoring it out of ieee80211_remove_tid_tx()
(which is only called in this one place).
This breaks the locking chain and makes it less likely that
we'll have similar locking chain problems in the future.
Fixes: ba8c3d6f16 ("mac80211: add an intermediate software queue implementation")
Reported-by: Chris Murphy <lists@colorremedies.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211202152554.f519884c8784.I555fef8e67d93fff3d9a304886c4a9f8b322e591@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Sending them out on a different queue can cause a race condition where a
number of packets in the queue may be discarded by the receiver, because
the ADDBA request is sent too early.
This affects any driver with software A-MPDU setup which does not allocate
packet seqno in hardware on tx, regardless of whether iTXQ is used or not.
The only driver I've seen that explicitly deals with this issue internally
is mwl8k.
Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20211202124533.80388-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
It's easier to use and understand, and to extend for EHT later,
if we use the values here instead of the shifted values.
Unfortunately, we need to add _POS so that we can use it in
places like iwlwifi/mvm where constants are needed.
While at it, fix the typo ("NOMIMAL") which also helps catch any
conflicts.
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://lore.kernel.org/r/20211126104817.7c29a05b8eb5.I2ca9faf06e177e3035bec91e2ae53c2f91d41774@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When color change is triggered in multiple bssid case, allow
only for transmitting BSS, and when it changes its bss color,
notify the non transmitting BSSs also of the new bss color.
Signed-off-by: John Crispin <john@phrozen.org>
Co-developed-by: Lavanya Suresh <lavaks@codeaurora.org>
Signed-off-by: Lavanya Suresh <lavaks@codeaurora.org>
Co-developed-by: Rameshkumar Sundaram <quic_ramess@quicinc.com>
Signed-off-by: Rameshkumar Sundaram <quic_ramess@quicinc.com>
Link: https://lore.kernel.org/r/1637146647-16282-1-git-send-email-quic_ramess@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This allows drivers to provide a destination device + info for flow offload
Only supported in combination with 802.3 encap offload
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Tested-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/20211112112223.1209-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The assignment of these three local variables in the file will not
be used in the corresponding functions, so they should be deleted.
The clang_analyzer complains as follows:
net/mac80211/wpa.c:689:2 warning:
net/mac80211/wpa.c:883:2 warning:
net/mac80211/wpa.c:452:2 warning:
Value stored to 'hdr' is never read
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: luo penghao <luo.penghao@zte.com.cn>
Link: https://lore.kernel.org/r/20211104061411.1744-1-luo.penghao@zte.com.cn
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The following is from a system that went OOM due to a memory leak:
wlan0: Allocated STA 74:83:c2:64:0b:87
wlan0: Allocated STA 74:83:c2:64:0b:87
wlan0: IBSS finish 74:83:c2:64:0b:87 (---from ieee80211_ibss_add_sta)
wlan0: Adding new IBSS station 74:83:c2:64:0b:87
wlan0: moving STA 74:83:c2:64:0b:87 to state 2
wlan0: moving STA 74:83:c2:64:0b:87 to state 3
wlan0: Inserted STA 74:83:c2:64:0b:87
wlan0: IBSS finish 74:83:c2:64:0b:87 (---from ieee80211_ibss_work)
wlan0: Adding new IBSS station 74:83:c2:64:0b:87
wlan0: moving STA 74:83:c2:64:0b:87 to state 2
wlan0: moving STA 74:83:c2:64:0b:87 to state 3
.
.
wlan0: expiring inactive not authorized STA 74:83:c2:64:0b:87
wlan0: moving STA 74:83:c2:64:0b:87 to state 2
wlan0: moving STA 74:83:c2:64:0b:87 to state 1
wlan0: Removed STA 74:83:c2:64:0b:87
wlan0: Destroyed STA 74:83:c2:64:0b:87
The ieee80211_ibss_finish_sta() is called twice on the same STA from 2
different locations. On the second attempt, the allocated STA is not
destroyed creating a kernel memory leak.
This is happening because sta_info_insert_finish() does not call
sta_info_free() the second time when the STA already exists (returns
-EEXIST). Note that the caller sta_info_insert_rcu() assumes STA is
destroyed upon errors.
Same fix is applied to -ENOMEM.
Signed-off-by: Ahmed Zaki <anzaki@gmail.com>
Link: https://lore.kernel.org/r/20211002145329.3125293-1-anzaki@gmail.com
[change the error path label to use the existing code]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Some drivers that do their own sequence number allocation (e.g. ath9k) rely
on being able to modify params->ssn on starting tx ampdu sessions.
This was broken by a change that modified it to use sta->tid_seq[tid] instead.
Cc: stable@vger.kernel.org
Fixes: 31d8bb4e07 ("mac80211: agg-tx: refactor sending addba")
Reported-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20211124094024.43222-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since retransmission clears info->control, rate control needs to be called
again, otherwise the driver might crash due to invalid rates.
Cc: stable@vger.kernel.org # 5.14+
Reported-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Reported-by: Robert W <rwbugreport@lost-in-the-void.net>
Fixes: 03c3911d2d ("mac80211: call ieee80211_tx_h_rate_ctrl() when dequeue")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Link: https://lore.kernel.org/r/20211122204323.9787-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add two new parameters kernel_ringparam and extack for
.get_ringparam and .set_ringparam to extend more ring params
through netlink.
Signed-off-by: Hao Chen <chenhao288@hisilicon.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Similar to cfg80211, introduce set_radar_offchan callback in mac80211_ops
in order to configure a dedicated offchannel chain available on some hw
(e.g. mt7915) to perform offchannel CAC detection and avoid tx/rx downtime.
Tested-by: Evelyn Tsai <evelyn.tsai@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/201110606d4f3a7dfdf31440e351f2e2c375d4f0.1634979655.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The codepaths for rx with decap offload and tx with itxq were not updating
the counters for the throughput led trigger.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20211113063415.55147-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since commit a05829a722 ("cfg80211: avoid holding the RTNL when
calling the driver") we've not only been protecting the pointer
to monitor_sdata with the RTNL, but also with the wiphy->mtx. This
is relevant in a number of lockdep assertions, e.g. the one we hit
in ieee80211_set_monitor_channel(). However, we're now protecting
all the assignments/dereferences, even the one in interface iter,
with the wiphy->mtx, so switch over the lockdep assertions to that
lock.
Fixes: a05829a722 ("cfg80211: avoid holding the RTNL when calling the driver")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20211112135143.cb8e8ceffef3.Iaa210f16f6904c8a7a24954fb3396da0ef86ec08@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When __ieee80211_select_queue is called, skb->cb has not been cleared yet,
which means that info->control.flags can contain garbage.
In some cases this leads to IEEE80211_TX_CTRL_DONT_REORDER being set, causing
packets marked for other queues to randomly end up in BE instead.
This flag only needs to be checked in ieee80211_select_queue_80211, since
the radiotap parser is the only piece of code that sets it
Fixes: 66d06c8473 ("mac80211: adhere to Tx control flag that prevents frame reordering")
Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20211110212201.35452-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In commit 8c89f7b3d3 ("mac80211: Use flex-array for radiotap header
bitmap") we accidentally pointed the position to the wrong place, so
we overwrite a present bitmap, and thus cause all kinds of trouble.
To see the issue, note that the previous code read:
pos = (void *)(it_present + 1);
The requirement now is that we need to calculate pos via it_optional,
to not trigger the compiler hardening checks, as:
pos = (void *)&rthdr->it_optional[...];
Rewriting the original expression, we get (obviously, since that just
adds "+ x - x" terms):
pos = (void *)(it_present + 1 + rthdr->it_optional - rthdr->it_optional)
and moving the "+ rthdr->it_optional" outside to be used as an array:
pos = (void *)&rthdr->it_optional[it_present + 1 - rthdr->it_optional];
The original is off by one, fix it.
Cc: stable@vger.kernel.org
Fixes: 8c89f7b3d3 ("mac80211: Use flex-array for radiotap header bitmap")
Reported-by: Sid Hayn <sidhayn@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Tested-by: Sid Hayn <sidhayn@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20211109100203.c61007433ed6.I1dade57aba7de9c4f48d68249adbae62636fd98c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
ieee80211_get_keyid() will return false value if IV has been stripped,
such as return 0 for IP/ARP frames due to LLC header, and return -EINVAL
for disassociation frames due to its length... etc. Don't try to access
it if it's not present.
Signed-off-by: Xing Song <xing.song@mediatek.com>
Link: https://lore.kernel.org/r/20211101024657.143026-1-xing.song@mediatek.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* the applicable eth_hw_addr_set() and const hw_addr changes
* various code cleanups/refactorings
* stack usage reductions across the wireless stack
* some unstructured find_ie() -> structured find_element()
changes
* a few more pieces of multi-BSSID support
* some 6 GHz regulatory support
* 6 GHz support in hwsim, for testing userspace code
* Light Communications (LC, 802.11bb) early band definitions
to be able to add a first driver soon
-----BEGIN PGP SIGNATURE-----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=ZXrI
-----END PGP SIGNATURE-----
Merge tag 'mac80211-next-for-net-next-2021-10-21' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
Quite a few changes:
* the applicable eth_hw_addr_set() and const hw_addr changes
* various code cleanups/refactorings
* stack usage reductions across the wireless stack
* some unstructured find_ie() -> structured find_element()
changes
* a few more pieces of multi-BSSID support
* some 6 GHz regulatory support
* 6 GHz support in hwsim, for testing userspace code
* Light Communications (LC, 802.11bb) early band definitions
to be able to add a first driver soon
* tag 'mac80211-next-for-net-next-2021-10-21' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next: (35 commits)
cfg80211: fix kernel-doc for MBSSID EMA
mac80211: Prevent AP probing during suspend
nl80211: Add LC placeholder band definition to nl80211_band
...
====================
Link: https://lore.kernel.org/r/20211021154953.134849-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Submitting AP probe/null during suspend can cause unexpected
disconnect on resume because of timeout waiting for ack status:
wlan0: Failed to send nullfunc to AP 11:22:33:44:55:66 after 500ms, disconnecting
This is especially the case when we enter suspend when a scan is
ongoing, indeed, scan is cancelled from __ieee80211_suspend, leading
to a corresponding (aborted) scan complete event, which in turn causes
the submission of an immediate monitor null frame (restart_sta_timer).
The corresponding packet or ack will not be processed before resuming,
causing a timeout & disconnect on resume.
Delay the AP probing when suspending/suspended.
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Link: https://lore.kernel.org/r/1634805927-1113-1-git-send-email-loic.poulain@linaro.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Define LC band which is a draft under IEEE 802.11bb.
Current NL80211_BAND_LC is a placeholder band and
will be more defined IEEE 802.11bb progresses.
Signed-off-by: Srinivasan Raju <srini.raju@purelifi.com>
Link: https://lore.kernel.org/r/20211018100143.7565-2-srini.raju@purelifi.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Split __ieee80211_beacon_get() into a separate function for AP mode
ieee80211_beacon_get_ap().
Also, move the code common to all modes (AP, adhoc and mesh) to
a separate function ieee80211_beacon_get_finish().
Signed-off-by: Aloka Dixit <alokad@codeaurora.org>
Link: https://lore.kernel.org/r/20211006040938.9531-2-alokad@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Commit 406f42fa0d ("net-next: When a bond have a massive amount
of VLANs...") introduced a rbtree for faster Ethernet address look
up. To maintain netdev->dev_addr in this tree we need to make all
the writes to it got through appropriate helpers.
Convert mac80211 from memcpy(... ETH_ADDR) to eth_hw_addr_set():
@@
expression dev, np;
@@
- memcpy(dev->dev_addr, np, ETH_ALEN)
+ eth_hw_addr_set(dev, np)
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/20211019162816.1384077-1-kuba@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In breaking patch buf memory moved from stack to heap and sizeof(buf)
change from size of actual memory to size of the pointer to the heap.
Fix this by holding a separated variable for allocate size.
Fixes: 01f84f0ed3 ("mac80211: reduce stack usage in debugfs")
Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Link: https://lore.kernel.org/r/20211021163035.b9ae48c06e27.I6a6ed197110eae28cf4f6e38ce36828a7c136337@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Commit e72aeb9ee0 ("fq_codel: implement L4S style ce_threshold_ect1
marking") expanded the ce_threshold feature of FQ-CoDel so it can
be applied to a subset of the traffic, using the ECT(1) bit of the ECN
field as the classifier. However, hard-coding ECT(1) as the only
classifier for this feature seems limiting, so let's expand it to be more
general.
To this end, change the parameter from a ce_threshold_ect1 boolean, to a
one-byte selector/mask pair (ce_threshold_{selector,mask}) which is applied
to the whole diffserv/ECN field in the IP header. This makes it possible to
classify packets by any value in either the ECN field or the diffserv
field. In particular, setting a selector of INET_ECN_ECT_1 and a mask of
INET_ECN_MASK corresponds to the functionality before this patch, and a
mask of ~INET_ECN_MASK allows using the selector as a straight-forward
match against a diffserv code point:
# apply ce_threshold to ECT(1) traffic
tc qdisc replace dev eth0 root fq_codel ce_threshold 1ms ce_threshold_selector 0x1/0x3
# apply ce_threshold to ECN-capable traffic marked as diffserv AF22
tc qdisc replace dev eth0 root fq_codel ce_threshold 1ms ce_threshold_selector 0x50/0xfc
Regardless of the selector chosen, the normal rules for ECN-marking of
packets still apply, i.e., the flow must still declare itself ECN-capable
by setting one of the bits in the ECN field to get marked at all.
v2:
- Add tc usage examples to patch description
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20211019174709.69081-1-toke@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add TCA_FQ_CODEL_CE_THRESHOLD_ECT1 boolean option to select Low Latency,
Low Loss, Scalable Throughput (L4S) style marking, along with ce_threshold.
If enabled, only packets with ECT(1) can be transformed to CE
if their sojourn time is above the ce_threshold.
Note that this new option does not change rules for codel law.
In particular, if TCA_FQ_CODEL_ECN is left enabled (this is
the default when fq_codel qdisc is created), ECT(0) packets can
still get CE if codel law (as governed by limit/target) decides so.
Section 4.3.b of current draft [1] states:
b. A scheduler with per-flow queues such as FQ-CoDel or FQ-PIE can
be used for L4S. For instance within each queue of an FQ-CoDel
system, as well as a CoDel AQM, there is typically also ECN
marking at an immediate (unsmoothed) shallow threshold to support
use in data centres (see Sec.5.2.7 of [RFC8290]). This can be
modified so that the shallow threshold is solely applied to
ECT(1) packets. Then if there is a flow of non-ECN or ECT(0)
packets in the per-flow-queue, the Classic AQM (e.g. CoDel) is
applied; while if there is a flow of ECT(1) packets in the queue,
the shallower (typically sub-millisecond) threshold is applied.
Tested:
tc qd replace dev eth1 root fq_codel ce_threshold_ect1 50usec
netperf ... -t TCP_STREAM -- K dctcp
tc -s -d qd sh dev eth1
qdisc fq_codel 8022: root refcnt 32 limit 10240p flows 1024 quantum 9212 target 5ms ce_threshold_ect1 49us interval 100ms memory_limit 32Mb ecn drop_batch 64
Sent 14388596616 bytes 9543449 pkt (dropped 0, overlimits 0 requeues 152013)
backlog 0b 0p requeues 152013
maxpacket 68130 drop_overlimit 0 new_flow_count 95678 ecn_mark 0 ce_mark 7639
new_flows_len 0 old_flows_len 0
[1] L4S current draft:
https://datatracker.ietf.org/doc/html/draft-ietf-tsvwg-l4s-arch
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Ingemar Johansson S <ingemar.s.johansson@ericsson.com>
Cc: Tom Henderson <tomh@tomh.org>
Cc: Bob Briscoe <in@bobbriscoe.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Configure multiple BSSID and enhanced multi-BSSID advertisement (EMA)
parameters in mac80211 for AP mode.
For each interface, 'mbssid_tx_vif' points to the transmitting interface of
the MBSSID set. The pointer is set to NULL if MBSSID is disabled.
Function ieee80211_stop() is modified to always bring down all the
non-transmitting interfaces first and the transmitting interface last.
Signed-off-by: John Crispin <john@phrozen.org>
Co-developed-by: Aloka Dixit <alokad@codeaurora.org>
Signed-off-by: Aloka Dixit <alokad@codeaurora.org>
Link: https://lore.kernel.org/r/20210916025437.29138-3-alokad@codeaurora.org
[slightly change logic to be more obvious]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This is to save the transmit power envelope element and power
constraint in struct ieee80211_bss_conf for 6 GHz. Lower driver
will use this info to calculate the power limit.
Signed-off-by: Wen Gong <wgong@codeaurora.org>
Link: https://lore.kernel.org/r/20210924100052.32029-7-wgong@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This patch is to convert the regulatory info subfield in HE operation
element to power type and save in struct cfg80211_chan_def.
Signed-off-by: Wen Gong <wgong@codeaurora.org>
Link: https://lore.kernel.org/r/20210924100052.32029-3-wgong@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since we're pointing into a frame, the pointer to the
twt_agrt->req_type struct member is potentially not
aligned properly. Open-code le16p_replace_bits() to
avoid passing an unaligned pointer.
Reported-by: kernel test robot <lkp@intel.com>
Fixes: f5a4c24e68 ("mac80211: introduce individual TWT support in AP mode")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20210927115124.e1208694f37b.Ie3de9bcc5dde5a79e3ac81f3185beafe4d214e57@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When rhashtable_init() fails, it returns -EINVAL.
However, since error return value of rhashtable_init is not checked,
it can cause use of uninitialized pointers.
So, fix unhandled errors of rhashtable_init.
Signed-off-by: MichelleJin <shjy180909@gmail.com>
Link: https://lore.kernel.org/r/20210927033457.1020967-4-shjy180909@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
When PN checking is done in mac80211, for fragmentation we need
to copy the PN to the RX struct so we can later use it to do a
comparison, since commit bf30ca922a ("mac80211: check defrag
PN against current frame").
Unfortunately, in that commit I used the 'hdr' variable without
it being necessarily valid, so use-after-free could occur if it
was necessary to reallocate (parts of) the frame.
Fix this by reloading the variable after the code that results
in the reallocations, if any.
This fixes https://bugzilla.kernel.org/show_bug.cgi?id=214401.
Cc: stable@vger.kernel.org
Fixes: bf30ca922a ("mac80211: check defrag PN against current frame")
Link: https://lore.kernel.org/r/20210927115838.12b9ac6bb233.I1d066acd5408a662c3b6e828122cd314fcb28cdb@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In function ieee80211_prep_channel(), it has some ieee80211_bss_get_ie()
and cfg80211_find_ext_ie() to get the IE, this is to use another
function ieee802_11_parse_elems() to get all the IEs in one time.
Signed-off-by: Wen Gong <wgong@codeaurora.org>
Link: https://lore.kernel.org/r/20210924100052.32029-6-wgong@codeaurora.org
[remove now unnecessary size validation, use -ENOMEM, free elems earlier
for less error handling code]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
As the 802.11 spec evolves, we need to parse more and more
elements. This is causing the struct to grow, and we can no
longer get away with putting it on the stack.
Change the API to always dynamically allocate and return an
allocated pointer that must be kfree()d later.
As an alternative, I contemplated a scheme whereby we'd say
in the code which elements we needed, e.g.
DECLARE_ELEMENT_PARSER(elems,
SUPPORTED_CHANNELS,
CHANNEL_SWITCH,
EXT(KEY_DELIVERY));
ieee802_11_parse_elems(..., &elems, ...);
and while I think this is possible and will save us a lot
since most individual places only care about a small subset
of the elements, it ended up being a bit more work since a
lot of places do the parsing and then pass the struct to
other functions, sometimes with multiple levels.
Link: https://lore.kernel.org/r/20210920154009.26caff6b5998.I05ae58768e990e611aee8eca8abefd9d7bc15e05@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
We currently pass the entire elements to the rx_bcn_presp()
method, but only need mesh_config. Additionally, we use the
length of the elements to calculate back the entire frame's
length, but that's confusing - just pass the length of the
frame instead.
Link: https://lore.kernel.org/r/20210920154009.a18ed3d2da6c.I1824b773a0fbae4453e1433c184678ca14e8df45@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
WARNING: CPU: 1 PID: 9 at net/mac80211/sta_info.c:554
sta_info_insert_rcu+0x121/0x12a0
Modules linked in:
CPU: 1 PID: 9 Comm: kworker/u8:1 Not tainted 5.14.0-rc7+ #253
Workqueue: phy3 ieee80211_iface_work
RIP: 0010:sta_info_insert_rcu+0x121/0x12a0
...
Call Trace:
ieee80211_ibss_finish_sta+0xbc/0x170
ieee80211_ibss_work+0x13f/0x7d0
ieee80211_iface_work+0x37a/0x500
process_one_work+0x357/0x850
worker_thread+0x41/0x4d0
If an Ad-Hoc node receives packets with invalid source MAC address,
it hits a WARN_ON in sta_info_insert_check(), this can spam the log.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20210827144230.39944-1-yuehaibing@huawei.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In ieee80211_amsdu_aggregate() set a pointer frag_tail point to the
end of skb_shinfo(head)->frag_list, and use it to bind other skb in
the end of this function. But when execute ieee80211_amsdu_aggregate()
->ieee80211_amsdu_realloc_pad()->pskb_expand_head(), the address of
skb_shinfo(head)->frag_list will be changed. However, the
ieee80211_amsdu_aggregate() not update frag_tail after call
pskb_expand_head(). That will cause the second skb can't bind to the
head skb appropriately.So we update the address of frag_tail to fix it.
Fixes: 6e0456b545 ("mac80211: add A-MSDU tx support")
Signed-off-by: Chih-Kang Chang <gary.chang@realtek.com>
Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://lore.kernel.org/r/20210830073240.12736-1-pkshih@realtek.com
[reword comment]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This reverts commit d333322361 ("mac80211: do not use low data rates for
data frames with no ack flag").
Returning false early in rate_control_send_low breaks sending broadcast
packets, since rate control will not select a rate for it.
Before re-introducing a fixed version of this patch, we should probably also
make some changes to rate control to be more conservative in selecting rates
for no-ack packets and also prevent using probing rates on them, since we won't
get any feedback.
Fixes: d333322361 ("mac80211: do not use low data rates for data frames with no ack flag")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20210906083559.9109-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Introduce TWT action frames parsing support to mac80211.
Currently just individual TWT agreement are support in AP mode.
Whenever the AP receives a TWT action frame from an associated client,
after performing sanity checks, it will notify the underlay driver with
requested parameters in order to check if they are supported and if there
is enough room for a new agreement. The driver is expected to set the
agreement result and report it to mac80211.
Drivers supporting this have two new callbacks:
- add_twt_setup (mandatory)
- twt_teardown_request (optional)
mac80211 will send an action frame reply according to the result
reported by the driver.
Tested-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/257512f2e22ba42b9f2624942a128dd8f141de4b.1629741512.git.lorenzo@kernel.org
[use le16p_replace_bits(), minor cleanups, use (void *) casts,
fix to use ieee80211_get_he_iftype_cap() correctly]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
* BSS coloring support
* MEI commands for Intel platforms
* various fixes/cleanups
-----BEGIN PGP SIGNATURE-----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=q8bL
-----END PGP SIGNATURE-----
Merge tag 'mac80211-next-for-net-next-2021-08-20' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
Minor updates:
* BSS coloring support
* MEI commands for Intel platforms
* various fixes/cleanups
* tag 'mac80211-next-for-net-next-2021-08-20' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next:
cfg80211: fix BSS color notify trace enum confusion
mac80211: Fix insufficient headroom issue for AMSDU
mac80211: add support for BSS color change
nl80211: add support for BSS coloring
mac80211: Use flex-array for radiotap header bitmap
mac80211: radiotap: Use BIT() instead of shifts
mac80211: Remove unnecessary variable and label
mac80211: include <linux/rbtree.h>
mac80211: Fix monitor MTU limit so that A-MSDUs get through
mac80211: remove unnecessary NULL check in ieee80211_register_hw()
mac80211: Reject zero MAC address in sta_info_insert_check()
nl80211: vendor-cmd: add Intel vendor commands for iwlmei usage
====================
Link: https://lore.kernel.org/r/20210820105329.48674-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The color change announcement is very similar to how CSA works where
we have an IE that includes a counter. When the counter hits 0, the new
color is applied via an updated beacon.
This patch makes the CSA counter functionality reusable, rather than
implementing it again. This also allows for future reuse incase support
for other counter IEs gets added.
Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: John Crispin <john@phrozen.org>
Link: https://lore.kernel.org/r/057c1e67b82bee561ea44ce6a45a8462d3da6995.1625247619.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In preparation for FORTIFY_SOURCE performing compile-time and run-time
field bounds checking for memcpy(), memmove(), and memset(), avoid
intentionally writing across neighboring fields.
The it_present member of struct ieee80211_radiotap_header is treated as a
flexible array (multiple u32s can be conditionally present). In order for
memcpy() to reason (or really, not reason) about the size of operations
against this struct, use of bytes beyond it_present need to be treated
as part of the flexible array. Add a trailing flexible array and
initialize its initial index via pointer arithmetic.
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210806215305.2875621-1-keescook@chromium.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The variable ret and label just used as return, so we delete it and
use the return statement instead of the goto statement.
Signed-off-by: dingsenjie <dingsenjie@yulong.com>
Link: https://lore.kernel.org/r/20210805064349.202148-1-dingsenjie@163.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The maximum MTU was set to 2304, which is the maximum MSDU size. While
this is valid for normal WLAN interfaces, it is too low for monitor
interfaces. A monitor interface may receive and inject MPDU frames, and
the maximum MPDU frame size is larger than 2304. The MPDU may also
contain an A-MSDU frame, in which case the size may be much larger than
the MTU limit. Since the maximum size of an A-MSDU depends on the PHY
mode of the transmitting STA, it is not possible to set an exact MTU
limit for a monitor interface. Now the maximum MTU for a monitor
interface is unrestricted.
Signed-off-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Link: https://lore.kernel.org/r/20210628123246.2070558-1-johan.almbladh@anyfinetworks.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The address "&sband->iftype_data[i]" points to an array at the end of
struct. It can't be NULL and so the check can be removed.
Fixes: bac2fd3d75 ("mac80211: remove use of ieee80211_get_he_sta_cap()")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YNmgHi7Rh3SISdog@mwanda
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
