Commit Graph

1251428 Commits

Author SHA1 Message Date
Ilan Peer
4cdb86487e wifi: iwlwifi: mvm: Fix the listener MAC filter flags
One of the flags was from the wrong API.

Fixes: 9be162a7b6 ("wifi: iwlwifi: mvm: add support for the new MAC CTXT command")
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240208185302.a338c30ec4e9.Ic2813cdeba4443c692d462fc4859392f069d7e33@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-12 21:24:51 +01:00
Ilan Peer
59214747f2 wifi: iwlwifi: mvm: Extend support for P2P service discovery
New additions to the P2P specification use action frames to
extend the P2P device discovery and service discovery. Thus,
configure the P2P Device link to accept all management frames.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240208185302.7ae41234de7b.Ie0b08d4b965409ef6df5505396927567fb899d52@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-12 21:24:51 +01:00
Johannes Berg
07da4a1b2a wifi: iwlwifi: mvm: work around A-MSDU size problem
The firmware will now start with 1500 byte A-MSDU size
rather than 3500 as before, and that seems to cause some
really hard to debug problems. Keep A-MSDU disabled if
the size is less than 2000 to disable this for now.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240208185302.3dcd0a1767d0.I450d35f3085b3b04a96dd1e1e7d8c27bda9ce8f5@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-12 21:24:51 +01:00
Mukesh Sisodiya
0d2fc8821a wifi: iwlwifi: nvm: parse the VLP/AFC bit from regulatory
6 GHz STA supports different power types as LPI, SP, VLP.
and this information is provided by regulatory info.

Add support in driver to parse the power type capability in
regulatory info from FW and set it to the channel flags.

Signed-off-by: Mukesh Sisodiya <mukesh.sisodiya@intel.com>
Reviewed-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240208185302.9c6a4acabdb3.I501de5c0d86b9702bf61158a2e91c954a1da9a2a@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-12 21:24:51 +01:00
Shaul Triebitz
24e5252c59 wifi: iwlwifi: iwlmvm: handle unprotected deauth/disassoc in d3
In MFP, do not disconnect if an unprotected deauth
or disassoc was received during D3.
For that, need to configure wowlan with MFP (IS_11W_ASSOC).

Now, in case of an unprotected deauth/disassoc, the wakeup
reason returned by the firmware will be:
IWL_WAKEUP_BY_11W_UNPROTECTED_DEAUTH_OR_DISASSOC
(and not IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH
which will cause a disconnection).
Also, report this reason to cfg80211.

In another patch, the driver will send an SA query.

Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240206175739.fde438a22e3f.I3c8497520aaa95a22febff727b0ad08146965d47@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-12 21:24:01 +01:00
Shaul Triebitz
a64be8296e wifi: cfg80211: report unprotected deauth/disassoc in wowlan
Add to cfg80211_wowlan_wakeup another wakeup reason -
unprot_deauth_disassoc.
To be set to true if the woke up was due to an
unprotected deauth or disassoc frame in MFP.
In that case report WOWLAN_TRIG_UNPROTECTED_DEAUTH_DISASSOC.

Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240206164849.a3d739850d03.I8f52a21c4f36d1af1f8068bed79e2f9cbf8289ef@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-12 21:22:48 +01:00
Shaul Triebitz
93d9f26db5 wifi: nl80211: allow reporting wakeup for unprot deauth/disassoc
Add a report reason for waking up due to an unprotected
deauth/disassoc when MFP is used.

If setting wowlan to wake on disconnection, and an unprotected
deatuh/disassoc arrived (in MFP), some drivers might want to
report wakeup due to unprotected deauth/disassoc, rather than
dissassociation. Add support for that.

Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240206164849.8dc9ad531a17.I7f8e926adf927f762e11aaa3458f6354665c7fc5@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-12 21:22:48 +01:00
Johannes Berg
49c17da387 wifi: mac80211: drop injection on disabled-chan monitor
If the driver uses the new IEEE80211_CHAN_CAN_MONITOR, we
may monitor on channels that are, e.g. via regulatory,
otherwise considered disabled. However, we really shouldn't
transmit on them, so prevent that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240206164849.9c03dcf67dbe.Ib86a851c274c440908c663f6dd774b79bfc3965d@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-12 21:22:48 +01:00
Johannes Berg
a110a3b791 wifi: cfg80211: optionally support monitor on disabled channels
If the hardware supports a disabled channel, it may in
some cases be possible to use monitor mode (without any
transmit) on it when it's otherwise disabled. Add a new
channel flag IEEE80211_CHAN_CAN_MONITOR that makes it
possible for a driver to indicate such a thing.

Make it per channel so drivers could have a choice with
it, perhaps it's only possible on some channels, perhaps
some channels are not supported at all, but still there
and marked disabled.

In _nl80211_parse_chandef() simplify the code and check
only for an unknown channel, _cfg80211_chandef_usable()
will later check for IEEE80211_CHAN_DISABLED anyway.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240206164849.87fad3a21a09.I9116b2fdc2e2c9fd59a9273a64db7fcb41fc0328@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-12 21:22:48 +01:00
Johannes Berg
7b5e25b8ba wifi: cfg80211: rename UHB to 6 GHz
UHB stands for "Ultra High Band", but this term doesn't really
exist in the spec. Rename all occurrences to "6 GHz", but keep
a few defines for userspace API compatibility.

Link: https://msgid.link/20240206164849.c9cfb9400839.I153db3b951934a1d84409c17fbe1f1d1782543fa@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-12 21:22:46 +01:00
Andrei Otcheretianski
675516f55d wifi: mac80211_hwsim: Add 160MHz bw range to regdom_custom_04
This allows testing 160MHz channels with DFS concurrent.
While at it, remove the TODO for adding a module param to enable
NL80211_EXT_FEATURE_DFS_CONCURRENT. This is not really needed as
mac80211_hwsim still needs to be loaded with custom regdom.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240206164849.1b9955e511f0.I5e5315e3a047db3677bfb5ead003a3a4f7d29b13@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-12 21:17:53 +01:00
Aditya Kumar Singh
16405bd7fd wifi: mac80211: remove only own link stations during stop_ap
Currently, whenever AP link is brought down via ieee80211_stop_ap()
function, all stations connected to the sdata are flushed. However, in case
of MLO there is a requirement to flush only stations connected to that link
and not all.

For instance - Consider 2 GHz and 5 GHz are AP MLD. Now due to some reason
5 GHz link of this AP is going down (link removal or any other case). All
stations connected, even legacy stations connected to 2 GHz link AP would
also be flushed. Flushing of other link stations is not desirable.

Fix this issue by passing self link ID to sta_flush() function. This would
then only remove the stations which are still using the passed link
ID as their link sta. Other stations will not be affected.

Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Link: https://msgid.link/20240205162952.1697646-4-quic_adisi@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-12 21:15:34 +01:00
Aditya Kumar Singh
ec67d6e0d4 wifi: mac80211: flush only stations using requests links
Whenever sta_flush() function is invoked, all STAs present in that
interface are flushed. In case of MLO, it is desirable to only flush such
STAs that are at least using a given link id as one of their links.

Add support for this by making change in the __sta_info_flush API argument
to accept a link ID. And then, only if the STA is using the given link as
one of its links, it would be flushed.

Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Link: https://msgid.link/20240205162952.1697646-3-quic_adisi@quicinc.com
[reword commit message, in particular this isn't about "active" links]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-12 21:13:57 +01:00
Aditya Kumar Singh
f6ca96aa51 wifi: cfg80211: add support for link id attribute in NL80211_CMD_DEL_STATION
Currently whenever NL80211_CMD_DEL_STATION command is called without any
MAC address, all stations present on that interface are flushed.
However with MLO there is a need to flush such stations only which are
using at least a particular link from the AP MLD interface.

For example - 2 GHz and 5 GHz are part of an AP MLD.
To this interface, following stations are connected -
   1. One non-EHT STA on 2 GHz link.
   2. One non-EHT STA on 5 GHz link.
   3. One Multi-Link STA having 2 GHz and 5 GHz as active links.

Now if currently, NL80211_CMD_DEL_STATION is issued by the 2 GHz link
without any MAC address, it would flush all station entries. However,
flushing of station entry #2 at least is not desireable since it
is connected to 5 GHz link alone.

Hence, add an option to pass link ID as well in the command so that if link
ID is passed, stations using that passed link ID alone would be flushed
and others will not.

So after this, station entries #1 and #3 alone would be flushed and #2 will
remain as it is.

Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Link: https://msgid.link/20240205162952.1697646-2-quic_adisi@quicinc.com
[clarify documentation]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-12 21:11:24 +01:00
Lorenzo Bianconi
6f656131f6 wifi: mac80211: remove gfp parameter from ieee80211_obss_color_collision_notify
Get rid of gfp parameter from ieee80211_obss_color_collision_notify
since it is no longer used.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Link: https://msgid.link/f91e1c78896408ac556586ba8c99e4e389aeba02.1707389901.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2024-02-12 21:07:30 +01:00
Kunwu Chan
3693bb4465 x86/xen: Add some null pointer checking to smp.c
kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure. Ensure the allocation was successful
by checking the pointer validity.

Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202401161119.iof6BQsf-lkp@intel.com/
Suggested-by: Markus Elfring <Markus.Elfring@web.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20240119094948.275390-1-chentao@kylinos.cn
Signed-off-by: Juergen Gross <jgross@suse.com>
2024-02-12 20:14:52 +01:00
Wojciech Drewek
500d0df5b4 ice: Fix debugfs with devlink reload
During devlink reload it is needed to remove debugfs entries
correlated with only one PF. ice_debugfs_exit() removes all
entries created by ice driver so we can't use it.

Introduce ice_debugfs_pf_deinit() in order to release PF's
debugfs entries. Move ice_debugfs_exit() call to ice_module_exit(),
it makes more sense since ice_debugfs_init() is called in
ice_module_init() and not in ice_probe().

Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Reviewed-by: Brett Creeley <brett.creeley@amd.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2024-02-12 10:12:42 -08:00
Wojciech Drewek
41cc4e5393 ice: Remove and readd netdev during devlink reload
Recent changes to the devlink reload (commit 9b2348e2d6
("devlink: warn about existing entities during reload-reinit"))
force the drivers to destroy devlink ports during reinit.
Adjust ice driver to this requirement, unregister netdvice, destroy
devlink port. ice_init_eth() was removed and all the common code
between probe and reload was moved to ice_load().

During devlink reload we can't take devl_lock (it's already taken)
and in ice_probe() we have to lock it. Use devl_* variant of the API
which does not acquire and release devl_lock. Guard ice_load()
with devl_lock only in case of probe.

Suggested-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Brett Creeley <brett.creeley@amd.com>
Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2024-02-12 10:11:53 -08:00
Grzegorz Nitka
372e27de4c ice: add support for 3k signing DDP sections for E825C
E825C devices shall support the new signing type of RSA 3K for new DDP
section (SEGMENT_SIGN_TYPE_RSA3K_E825 (5) - already in the code).
The driver is responsible to verify the presence of correct signing type.
Add 3k signinig support for E825C devices based on mac_type:
ICE_MAC_GENERIC_3K_E825;

Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2024-02-12 10:07:12 -08:00
Grzegorz Nitka
7a15668f66 ice: Add helper function ice_is_generic_mac
E800 series devices have a couple of quirks:
1. Sideband control queues are not supported
2. The registers that the driver needs to program for the "Precision
   Time Protocol (PTP)" feature are different for E800 series devices
   compared to other devices supported by this driver.

Both these require conditional logic based on the underlying device we
are dealing with.

The function ice_is_sbq_supported added by commit 8f5ee3c477
("ice: add support for sideband messages") addresses (1).
The same function can be used to address (2) as well
but this just looks weird readability wise in cases that have nothing
to do with sideband control queues:

	if (ice_is_sbq_supported(hw))
		/* program register A */
	else
		/* program register B */

For these cases, the function ice_is_generic_mac introduced by this
patch communicates the idea/intention better. Also rework
ice_is_sbq_supported to use this new function.
As side-band queue is supported for E825C devices, it's mac_type is
considered as generic mac_type.

Co-developed-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2024-02-12 10:06:18 -08:00
Grzegorz Nitka
f64e189442 ice: introduce new E825C devices family
Introduce new Intel Ethernet E825C family devices.
Add new PCI device IDs which are going to be supported by the
driver:
- 579C: Intel(R) Ethernet Connection E825-C for backplane
- 579D: Intel(R) Ethernet Connection E825-C for QSFP
- 579E: Intel(R) Ethernet Connection E825-C for SFP
- 579F: Intel(R) Ethernet Connection E825-C for SGMII

Add helper function ice_is_e825c() to verify if the running device
belongs to E825C family.

Co-developed-by: Jan Glaza <jan.glaza@intel.com>
Signed-off-by: Jan Glaza <jan.glaza@intel.com>
Co-developed-by: Michal Michalik <michal.michalik@intel.com>
Signed-off-by: Michal Michalik <michal.michalik@intel.com>
Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2024-02-12 09:57:06 -08:00
SeongJae Park
7d8c67dd5d xen/xenbus: document will_handle argument for xenbus_watch_path()
Commit 2e85d32b1c ("xen/xenbus: Add 'will_handle' callback support in
xenbus_watch_path()") added will_handle argument to xenbus_watch_path()
and its wrapper, xenbus_watch_pathfmt(), but didn't document it on the
kerneldoc comments of the function.  This is causing warnings that
reported by kernel test robot.  Add the documentation to fix it.

Fixes: 2e85d32b1c ("xen/xenbus: Add 'will_handle' callback support in xenbus_watch_path()")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202401121154.FI8jDGun-lkp@intel.com/
Signed-off-by: SeongJae Park <sj@kernel.org>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20240112185903.83737-1-sj@kernel.org
Signed-off-by: Juergen Gross <jgross@suse.com>
2024-02-12 18:03:14 +01:00
Daniil Dulov
383de5664c can: softing: remove redundant NULL check
In this case dev cannot be NULL, so remove redundant check.

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

Fixes: 03fd3cf5a1 ("can: add driver for Softing card")
Signed-off-by: Daniil Dulov <d.dulov@aladdin.ru>
Link: https://lore.kernel.org/all/20240211150535.3529-1-d.dulov@aladdin.ru
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 17:25:42 +01:00
Jimmy Assarsson
85216f56bd can: kvaser_pciefd: Add support for Kvaser M.2 PCIe 4xCAN
Add support for new Kvaser pciefd device, M.2 PCIe 4xCAN, based on
Xilinx FPGA.

Signed-off-by: Jimmy Assarsson <extja@kvaser.com>
Link: https://lore.kernel.org/all/20231113134717.515037-1-extja@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 17:23:51 +01:00
Marc Kleine-Budde
7d06d15df2 Merge patch "can network drivers maintainer"
Vincent Mailhol <mailhol.vincent@wanadoo.fr> says:

This series is a single patch to replace Wolfgang by myself as the
second maintainer of the CAN drivers subtree.

Link: https://lore.kernel.org/all/20240205111743.920528-1-mailhol.vincent@wanadoo.fr
[mkl: fix typo]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 17:20:38 +01:00
Vincent Mailhol
7af9682d9e can: change can network drivers maintainer
Wolfgang has not been active on the linux-can mailing list other the
last two years, his last activity being on November 2021 [1].

In replacement, I would like to nominate myself (Vincent Mailhol) as
the second maintainer of the CAN drivers subtree.

Wolfgang is already listed in the CREDITS since [2], so despite this
removal, his legacy remains credited.

Thank you for all your contributions!

[1] https://lore.kernel.org/linux-can/?q=f%3AWolfgang+Grandegger

[2] commit 4261a2043f ("can: Update MAINTAINERS and CREDITS file")
Link: https://git.kernel.org/torvalds/c/4261a2043f1b

CC: Marc Kleine-Budde <mkl@pengutronix.de>
CC: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://lore.kernel.org/all/20240205111743.920528-2-mailhol.vincent@wanadoo.fr
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 17:20:27 +01:00
Marc Kleine-Budde
2ea9b94c50 Merge patch series "can: m_can: Optimizations for m_can/tcan part 2"
Markus Schneider-Pargmann <msp@baylibre.com> says:

The series implements many small and bigger throughput improvements and
adds rx/tx coalescing at the end.

Changes in v7:
- Rebased to v6.8-rc1
- Fixed NULL pointer dereference in m_can_clean() on am62 that happened
  when doing ip link up, ip link down, ip link up
- Fixed a racecondition on am62 observed with high throughput tests.
  netdev_completed_queue() was called before netdev_sent_queue() as the
  interrupt was processed so fast. netdev_sent_queue() is now reported
  before the actual sent is done.
- Fixed an initializing issue on am62 where active interrupts are
  getting lost between runs. Fixed by resetting cdev->active_interrupts
  in m_can_disable_all_interrupts()
- Removed m_can_start_fast_xmit() because of a reordering of operations
  due to above mentioned race condition

Changes in v6:
- Rebased to v6.6-rc2
- Added two small changes for the newly integrated polling feature
- Reuse the polling hrtimer for coalescing as the timer used for
  coalescing has a similar purpose as the one for polling. Also polling
  and coalescing will never be active at the same time.

Changes in v5:
- Add back parenthesis in m_can_set_coalesce(). This will make
  checkpatch unhappy but gcc happy.
- Remove unused fifo_header variable in m_can_tx_handler().
- Rebased to v6.5-rc1

Changes in v4:
- Create and use struct m_can_fifo_element in m_can_tx_handler
- Fix memcpy_and_pad to copy the full buffer
- Fixed a few checkpatch warnings
- Change putidx to be unsigned
- Print hard_xmit error only once when TX FIFO is full

Changes in v3:
- Remove parenthesis in error messages
- Use memcpy_and_pad for buffer copy in 'can: m_can: Write transmit
  header and data in one transaction'.
- Replace spin_lock with spin_lock_irqsave. I got a report of a
  interrupt that was calling start_xmit just after the netqueue was
  woken up before the locked region was exited. spin_lock_irqsave should
  fix this. I attached the full stack at the end of the mail if someone
  wants to know.
- Rebased to v6.3-rc1.
- Removed tcan4x5x patches from this series.

Changes in v2:
- Rebased on v6.2-rc5
- Fixed missing/broken accounting for non peripheral m_can devices.

previous versions:
v1 - https://lore.kernel.org/lkml/20221221152537.751564-1-msp@baylibre.com
v2 - https://lore.kernel.org/lkml/20230125195059.630377-1-msp@baylibre.com
v3 - https://lore.kernel.org/lkml/20230315110546.2518305-1-msp@baylibre.com
v4 - https://lore.kernel.org/lkml/20230621092350.3130866-1-msp@baylibre.com
v5 - https://lore.kernel.org/lkml/20230718075708.958094-1-msp@baylibre.com
v6 - https://lore.kernel.org/lkml/20230929141304.3934380-1-msp@baylibre.com

Link: https://lore.kernel.org/all/20240207093220.2681425-1-msp@baylibre.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 17:16:08 +01:00
Markus Schneider-Pargmann
c306c3873d can: m_can: Implement transmit submission coalescing
m_can supports submitting multiple transmits with one register write.
This is an interesting option to reduce the number of SPI transfers for
peripheral chips.

The m_can_tx_op is extended with a bool that signals if it is the last
transmission and the submit should be executed immediately.

The worker then writes the skb to the FIFO and submits it only if the
submit bool is set. If it isn't set, the worker will write the next skb
which is waiting in the workqueue to the FIFO, etc.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Link: https://lore.kernel.org/all/20240207093220.2681425-15-msp@baylibre.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 17:02:45 +01:00
Markus Schneider-Pargmann
251f913d19 can: m_can: Implement BQL
Implement byte queue limiting in preparation for the use of xmit_more().

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Link: https://lore.kernel.org/all/20240207093220.2681425-14-msp@baylibre.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 17:02:45 +01:00
Markus Schneider-Pargmann
7508a10ca2 can: m_can: Use tx_fifo_in_flight for netif_queue control
The network queue is currently always stopped in start_xmit and
continued in the interrupt handler. This is not possible anymore if we
want to keep multiple transmits in flight in parallel.

Use the previously introduced tx_fifo_in_flight counter to control the
network queue instead. This has the benefit of not needing to ask the
hardware about fifo status.

This patch stops the network queue in start_xmit if the number of
transmits in flight reaches the size of the fifo and wakes up the queue
from the interrupt handler once the transmits in flight drops below the
fifo size. This means any skbs over the limit will be rejected
immediately in start_xmit (it shouldn't be possible at all to reach that
state anyways).

The maximum number of transmits in flight is the size of the fifo.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Link: https://lore.kernel.org/all/20240207093220.2681425-13-msp@baylibre.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 17:02:44 +01:00
Markus Schneider-Pargmann
1fa80e23c1 can: m_can: Introduce a tx_fifo_in_flight counter
Keep track of the number of transmits in flight.

This patch prepares the driver to control the network interface queue
based on this counter. By itself this counter be
implemented with an atomic, but as we need to do other things in the
critical sections later I am using a spinlock instead.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Link: https://lore.kernel.org/all/20240207093220.2681425-12-msp@baylibre.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 17:02:44 +01:00
Markus Schneider-Pargmann
e668673ed3 can: m_can: Use the workqueue as queue
The current implementation uses the workqueue for peripheral chips to
submit work. Only a single work item is queued and used at any time.

To be able to keep more than one transmit in flight at a time, prepare
the workqueue to support multiple transmits at the same time.

Each work item now has a separate storage for a skb and a pointer to
cdev. This assures that each workitem can be processed individually.

The workqueue is replaced by an ordered workqueue which makes sure that
only a single worker processes the items queued on the workqueue. Also
items are ordered by the order they were enqueued. This removes most of
the concurrency the workqueue normally offers. It is not necessary for
this driver.

The cleanup functions have to be adopted a bit to handle this new
mechanism.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Link: https://lore.kernel.org/all/20240207093220.2681425-11-msp@baylibre.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 17:02:44 +01:00
Markus Schneider-Pargmann
80c5bac02a can: m_can: Cache tx putidx
m_can_tx_handler is the only place where data is written to the tx fifo.
We can calculate the putidx in the driver code here to avoid the
dependency on the txfqs register.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/all/20240207093220.2681425-10-msp@baylibre.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 17:02:44 +01:00
Markus Schneider-Pargmann
14f0a0a440 can: m_can: Use u32 for putidx
putidx is not an integer normally, it is an unsigned field used in
hardware registers. Use a u32 for it.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/all/20240207093220.2681425-9-msp@baylibre.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 17:02:44 +01:00
Markus Schneider-Pargmann
e55b963e4e can: m_can: Add tx coalescing ethtool support
Add TX support to get/set functions for ethtool coalescing.
tx-frames-irq and tx-usecs-irq can only be set/unset together.
tx-frames-irq needs to be less than TXE and TXB.

As rx and tx share the same timer, rx-usecs-irq and tx-usecs-irq can be
enabled/disabled individually but they need to have the same value if
enabled.

Polling is excluded from TX irq coalescing.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/all/20240207093220.2681425-8-msp@baylibre.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 17:02:43 +01:00
Markus Schneider-Pargmann
9515223bd0 can: m_can: Add rx coalescing ethtool support
Add the possibility to set coalescing parameters with ethtool.

rx-frames-irq and rx-usecs-irq can only be set and unset together as the
implemented mechanism would not work otherwise. rx-frames-irq can't be
greater than the RX FIFO size.

Also all values can only be changed if the chip is not active.

Polling is excluded from irq coalescing support.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/all/20240207093220.2681425-7-msp@baylibre.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 17:02:43 +01:00
Markus Schneider-Pargmann
ec390d0876 can: m_can: Implement transmit coalescing
Extend the coalescing implementation for transmits.

In normal mode the chip raises an interrupt for every finished transmit.
This implementation switches to coalescing mode as soon as an interrupt
handled a transmit. For coalescing the watermark level interrupt is used
to interrupt exactly after x frames were sent. It switches back into
normal mode once there was an interrupt with no finished transmit and
the timer being inactive.

The timer is shared with receive coalescing. The time for receive and
transmit coalescing timers have to be the same for that to work. The
benefit is to have only a single running timer.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/all/20240207093220.2681425-6-msp@baylibre.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 17:02:43 +01:00
Markus Schneider-Pargmann
07f25091ca can: m_can: Implement receive coalescing
m_can offers the possibility to set an interrupt on reaching a watermark
level in the receive FIFO. This can be used to implement coalescing.
Unfortunately there is no hardware timeout available to trigger an
interrupt if only a few messages were received within a given time. To
solve this I am using a hrtimer to wake up the irq thread after x
microseconds.

The timer is always started if receive coalescing is enabled and new
received frames were available during an interrupt. The timer is stopped
if during a interrupt handling no new data was available.

If the timer is started the new item interrupt is disabled and the
watermark interrupt takes over. If the timer is not started again, the
new item interrupt is enabled again, notifying the handler about every
new item received.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Link: https://lore.kernel.org/all/20240207093220.2681425-5-msp@baylibre.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 17:02:43 +01:00
Markus Schneider-Pargmann
4248ba9ea2 can: m_can: Write transmit header and data in one transaction
Combine header and data before writing to the transmit fifo to reduce
the overhead for peripheral chips.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/all/20240207093220.2681425-4-msp@baylibre.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 17:02:42 +01:00
Markus Schneider-Pargmann
ba72f6c78b can: m_can: Move hrtimer init to m_can_class_register
The hrtimer_init() is called in m_can_plat_probe() and the hrtimer
function is set in m_can_class_register(). For readability it is better
to keep these two together in m_can_class_register().

Cc: Judith Mendez <jm@ti.com>
Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/all/20240207093220.2681425-3-msp@baylibre.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 17:02:42 +01:00
Markus Schneider-Pargmann
a163c57610 can: m_can: Start/Cancel polling timer together with interrupts
Interrupts are enabled/disabled in more places than just m_can_start()
and m_can_stop(). Couple the polling timer with enabling/disabling of
all interrupts to achieve equivalent behavior.

Cc: Judith Mendez <jm@ti.com>
Fixes: b382380c0d ("can: m_can: Add hrtimer to generate software interrupt")
Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/all/20240207093220.2681425-2-msp@baylibre.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 17:02:42 +01:00
Marc Kleine-Budde
dbd86e47fd Merge patch series "can: esd: add support for esd GmbH PCIe/402 CAN interface"
Stefan Mätje <stefan.maetje@esd.eu> says:

The purpose of this patch is to introduce a new CAN driver to support
the esd GmbH 402 family of CAN interface boards. The hardware design
is based on a CAN controller implemented in a FPGA attached to a
PCIe link.

More information on these boards can be found following the links
included in the commit message.

This patch supports all boards but will operate the CAN-FD capable
boards only in Classic-CAN mode. The CAN-FD support will be added
when the initial patch has stabilized.

The patch is reuses the previous work of my former colleague:
Link: https://lore.kernel.org/linux-can/1426592308-23817-1-git-send-email-thomas.koerper@esd.eu

The patch is based on the linux-can-next main branch.

Changed in v11:
  No functional, only editorial changes due to feedback on v10.
  - Make lifetime of macros used for hardware timestamp calculation
    very short by #undef-ing them after use.
  - Fixed insertion order of new entry in MAINTAINERS file.

Changed in v10:
  Most changes due to feedback by Vincent Mailhol
  https://lore.kernel.org/linux-can/CAMZ6RqLOAC930GNOU+pWuoi6FgYwFOuFrSyAzVjvE2fuVgy8oA@mail.gmail.com
  - Add support for ethtool operations by using default operations
    provided by the can_dev module for drivers with hardware time
    stamp support.
  - Factor out core unregistration into pci402_unregister_core().
  - Factor out getting next TX fifo index into acc_tx_fifo_next().
  - Stop counting alloc_can_err_skb() failures in rx_dropped statistic.
  - Add CAN_ERR_CNT flag in CAN error frames as needed.
  - Rework function acc_reset_fpga(). To clear I^2C bus enable bit
    is not necessary after FPGA reset.
  - Simplify struct acc_bmmsg_rxtxdone layout.
  - Additional non functional changes due to feedback by Vincent
  - Some spelling corrections: ESDACC -> esdACC

Changes in v9:
  - Fix returning success error code in case of allocation failure in
    pci402_probe().

Changes in v8:
  - Rebased to 6.6-rc2 on linux-can-next branch main

Changes in v7:
  - Numerous changes. Find the quoted with inline comments about changes
    below after the changes list. Stuff that I don't understand and
    where I have questions is marked with ????.
    Unfortunately I will be AFK till 28th of November.

Changes in v6:
  - Fixed the statistic handling of RX overrun errors and increase
    net_device_stats::rx_errors instead of net_device_stats::rx_dropped.
  - Added a patch to not increase rx statistics when generating a CAN
    rx error message frame as suggested on the linux-can list.
  - Added a patch to not not increase rx_bytes statistics for RTR frames
    as suggested on the linux-can list.

    The last two patches change the statistics handling from the previous
    style used in other drivers to the newly suggested one.

Changes in v5:
  - Added the initialization for netdev::dev_port as it is implemented
    for another CAN driver. See
    https://lore.kernel.org/linux-can/20211026180553.1953189-1-mailhol.vincent@wanadoo.fr

Changes in v4:
  - Fixed the build failure on ARCH=arm64 that was found by the Intel
    kernel test robot. See
    https://lore.kernel.org/linux-can/202109120608.7ZbQXkRh-lkp@intel.com

    Removed error monitoring code that used GCC's built-in compiler
    functions for atomic access (__sync_* functions). GCC versions
    after 9 (tested with "gcc-10 (Ubuntu 10.3.0-1ubuntu1~20.04)")
    don't implement the intrinsic atomic as in-line code but call
    "__aarch64_ldadd4_acq_rel" on arm64. This GCC support function
    is not exported by the kernel and therefore the module build
    post-processing fails.

    Removed that code because the error monitoring never showed a
    problem during the development this year.

Changes in v3:
  - Rework the bus-off restart logic in acc_set_mode() and
    handle_core_msg_errstatechange() to call netif_wake_queue() from the
    error active event.
  - Changed pci402_init_card() to allocate a variable sized array of
    struct acc_core using devm_kcalloc() instead of using a fixed size
    array in struct pci402_card.
  - Changed handle_core_msg_txabort() to release aborted TX frames in
    TX FIFO order.
  - Fixed the acc_close() function to abort all pending TX request in
    esdACC controller.
  - Fixed counting of transmit aborts in handle_core_msg_txabort().
    It is now done like in can_flush_echo_skb().
  - Fixed handle_core_msg_buserr() to create error frames including the
    CAN RX and TX error counters that were missing.
  - Fixed acc_set_bittiming() neither to touch LOM mode setting of
    esdACC controller nor to enter or leave RESET mode.
    The esdACC controller is going active on the CAN bus in acc_open()
    and is going inactive (RESET mode) again in acc_close().
  - Rely on the automatic release of memory fetched by devm_kzalloc().
    But still use devm_irq_free() explicitely to make sure that the
    interrupt handler is disconnected at that point.
    This avoids a possible crash in non-MSI mode due to the IRQ
    triggered by another device on the same PCI IRQ line.
  - Changed to use DMA map API instead of pci_*_consistent compatibility
    wrappers.
  - Fixed stale email references and updated copyright information.
  - Removed any traces of future CAN-FD support.

Changes in v2:
  - Avoid warning triggered by -Wshift-count-overflow on architectures
    with 32-bit dma_addr_t.
  - Fixed Makefile not to build the kernel module always. Doing this
    renamed esd402_pci.c to esd_402_pci-core.c as recommended by Marc.

previous versions:
v1 - https://lore.kernel.org/linux-can/20210728203647.15240-1-Stefan.Maetje@esd.eu
v2 - https://lore.kernel.org/linux-can/20210730173805.3926-1-Stefan.Maetje@esd.eu
v3 - https://lore.kernel.org/linux-can/20210908164640.23243-1-stefan.maetje@esd.eu
v4 - https://lore.kernel.org/linux-can/20210916172152.5127-1-stefan.maetje@esd.eu
v5 - https://lore.kernel.org/linux-can/20211109155326.2608822-1-stefan.maetje@esd.eu
v6 - https://lore.kernel.org/linux-can/20211201220328.3079270-1-stefan.maetje@esd.eu
v7 - https://lore.kernel.org/linux-can/20221106224156.3619334-1-stefan.maetje@esd.eu
v8 - https://lore.kernel.org/linux-can/20231025141635.1459606-1-stefan.maetje@esd.eu
v9 - https://lore.kernel.org/linux-can/20231107184103.2802678-1-stefan.maetje@esd.eu
v10 - https://lore.kernel.org/linux-can/20231120175657.4070921-1-stefan.maetje@esd.eu

Link: https://lore.kernel.org/all/20231122160211.2110448-1-stefan.maetje@esd.eu
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 16:58:55 +01:00
Stefan Mätje
9721866f07 can: esd: add support for esd GmbH PCIe/402 CAN interface family
This patch adds support for the PCI based PCIe/402 CAN interface family
from esd GmbH that is available with various form factors
(https://esd.eu/en/products/402-series-can-interfaces).

All boards utilize a FPGA based CAN controller solution developed
by esd (esdACC). For more information on the esdACC see
https://esd.eu/en/products/esdacc.

This driver detects all available CAN interface board variants of
the family but atm. operates the CAN-FD capable devices in
Classic-CAN mode only! A later patch will introduce the CAN-FD
functionality in this driver.

Co-developed-by: Thomas Körper <thomas.koerper@esd.eu>
Signed-off-by: Thomas Körper <thomas.koerper@esd.eu>
Signed-off-by: Stefan Mätje <stefan.maetje@esd.eu>
Link: https://lore.kernel.org/all/20231122160211.2110448-3-stefan.maetje@esd.eu
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 16:58:30 +01:00
Stefan Mätje
4dcd08b967 MAINTAINERS: add Stefan Mätje as maintainer for the esd electronics GmbH PCIe/402 CAN drivers
Adding myself (Stefan Mätje) as a maintainer for the upcoming driver of
the PCIe/402 interface card family.

Signed-off-by: Stefan Mätje <stefan.maetje@esd.eu>
Link: https://lore.kernel.org/all/20231122160211.2110448-2-stefan.maetje@esd.eu
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 16:58:30 +01:00
Oliver Hartkopp
e1aa35e163 can: isotp: support dynamic flow control parameters
The ISO15765-2 standard supports to take the PDUs communication parameters
blocksize (BS) and Separation Time minimum (STmin) either from the first
received flow control (FC) "static" or from every received FC "dynamic".

Add a new CAN_ISOTP_DYN_FC_PARMS flag to support dynamic FC parameters.

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://lore.kernel.org/all/20231208165729.3011-1-socketcan@hartkopp.net
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 16:55:40 +01:00
Nicolas Maier
fec846fa7e can: bcm: add recvmsg flags for own, local and remote traffic
CAN RAW sockets allow userspace to tell if a received CAN frame comes
from the same socket, another socket on the same host, or another host.
See commit 1e55659ce6 ("can-raw: add msg_flags to distinguish local
traffic"). However, this feature is missing in CAN BCM sockets.

Add the same feature to CAN BCM sockets. When reading a received frame
(opcode RX_CHANGED) using recvmsg, two flags in msg->msg_flags may be
set following the previous convention (from CAN RAW), to distinguish
between 'own', 'local' and 'remote' CAN traffic.

Update the documentation to reflect this change.

Signed-off-by: Nicolas Maier <nicolas.maier.dev@gmail.com>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://lore.kernel.org/all/20240120081018.2319-1-socketcan@hartkopp.net
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2024-02-12 16:55:17 +01:00
Ping-Ke Shih
4ae8ac201d wifi: rtw89: change qutoa to DBCC by default for WiFi 7 chips
Since WiFi 7 is expected to support MLO, so we should enable MAC-0/1 and
PHY-0/1. By default, set dbcc_en=true, change quota to DBCC mode, and set
MLO mode to 2 + 0 that means we only use 2x2 connection on MAC/PHY-0
for now.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240209065229.34515-12-pkshih@realtek.com
2024-02-12 17:39:14 +02:00
Po-Hao Huang
5f9c264f8e wifi: rtw89: reference quota mode when setting Tx power
Reference the current quota mode to avoid misleading warnings.
This patch is required after supporting DBCC quota mode.

Signed-off-by: Po-Hao Huang <phhuang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240209065229.34515-11-pkshih@realtek.com
2024-02-12 17:39:14 +02:00
Chih-Kang Chang
598481c6eb wifi: rtw89: 8922a: implement AP mode related reg for BE generation
Modify reg for BE generation when AP stop, otherwise have warning
messages "Polling beacon packet empty fail".

Signed-off-by: Chih-Kang Chang <gary.chang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240209065229.34515-10-pkshih@realtek.com
2024-02-12 17:39:14 +02:00
Ping-Ke Shih
ef95df5986 wifi: rtw89: 8922a: correct register definition and merge IO for ctrl_nbtg_bt_tx()
ctrl_nbtg_bt_tx is used to control AGC settings under non-shared path
condition, which is affected by BT TX. To speed up IO, merge continual
bit mask into one IO. Also, correct a register definition.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240209065229.34515-9-pkshih@realtek.com
2024-02-12 17:39:14 +02:00