Johannes Berg [Tue, 25 Jun 2024 16:51:08 +0000 (19:51 +0300)]
wifi: iwlwifi: mvm: don't flush BSSes on restart with MLD API
If the firmware has MLD APIs, it will handle all timing and we
don't need to give it timestamps. Therefore, we don't care about
the timestamps stored in the BSS table, so there's no need to
flush the BSS table.
Golan Ben Ami [Thu, 13 Jun 2024 14:11:23 +0000 (17:11 +0300)]
wifi: iwlwifi: remove AX101, AX201 and AX203 support from LNL
LNL is the codename for the upcoming Series 2 Core Ultra
processors designed by Intel. AX101, AX201 and AX203 devices
are not shiped on LNL platforms, so don't support them.
Johannes Berg [Tue, 18 Jun 2024 16:59:45 +0000 (19:59 +0300)]
wifi: iwlwifi: mvm: don't limit VLP/AFC to UATS-enabled
When UATS isn't enabled (no VLP/AFC AP support), we need to still
set the right bits in the channel/regulatory flags, so remove the
uats_enabled argument to the parsing etc.
Also, firmware deals just fine with getting the UATS table if it
supports the command even if the bits aren't set, so always send
it, since it's also needed if BIT(31) is set, but the driver need
not have any knowledge of that. Remove 'uats_enabled' entirely.
This isn't related to whether or not "fw can be loaded",
but rather requesting that ME go into a state where doing
a product reset is safe. This is related to FW load only
in the specific case of where it's used today in iwlmvm,
notably when it's known that the firmware itself will (or
at least may) do a product reset during load.
Clarify the documentation.
I was tempted to rename things too, but on the ME side it
really is also called PLDR (which is a Windows term and
may not even match the complete behaviour since doing a
full product reset from the driver also requires calling
an ACPI method first.) So keep the name aligned with ME.
Johannes Berg [Tue, 18 Jun 2024 16:44:11 +0000 (19:44 +0300)]
wifi: iwlwifi: mvm: rename 'pldr_sync'
PLDR (product level device reset) is a Windows term, and
is something the driver triggers there, AFAICT.
Really what 'pldr_sync' here wants to capture is whether
or not the firmware will/may do a product reset during
initialization, which makes the device drop off the bus,
requiring a rescan. If this is the case, obviously the
init will fail/time out, so we don't want to report all
kinds of errors etc., hence this tracking variable.
Rename it to 'fw_product_reset' to capture the meaning
better.
Miri Korenblit [Tue, 18 Jun 2024 16:44:05 +0000 (19:44 +0300)]
wifi: iwlwifi: trans: remove unused function parameter
iwl_trans_pcie_gen2_fw_alive doesn't use the scd_addr parameter,
it was there only because we needed the functio to have a prototype same
as iwl_trans_ops::fw_alive callback.
But now the ops is removed so no reason to keep the parameter.
Emmanuel Grumbach [Tue, 18 Jun 2024 16:44:03 +0000 (19:44 +0300)]
wifi: iwlwifi: support fast resume
This will allow to suspend / resume the system without resetting the
firmware. This will allow to reduce the resume time.
In case the fast_resume fails, stop the device and bring it up from
scratch.
Raise the timeout for the D3_END notification since in some iterations,
it took 240ms.
Johannes Berg [Tue, 18 Jun 2024 17:03:02 +0000 (20:03 +0300)]
wifi: iwlwifi: mvm: unify and fix interface combinations
AP interfaces fundamentally cannot leave the channel, so multi-
channel operation with them isn't really possible. We shouldn't
advertise support for such, at least not as long as we don't
have full multi-radio support. Thus, remove the AP bit from the
interface combinations for two channels and add another set for
just one channel that has it.
Also, to avoid duplicating everything even more, unify the NAN
and non-NAN cases.
Emmanuel Grumbach [Tue, 18 Jun 2024 17:03:01 +0000 (20:03 +0300)]
wifi: iwlwifi: pcie: fix a few legacy register accesses for new devices
Do not access legacy bits for new devices, this has no effect.
Somehow, wowlan worked despite the usage of the wrong bits. Now
that we want to keep the firmware loaded during suspend even without
wowlan, this change is needed.
Johannes Berg [Wed, 12 Jun 2024 12:38:10 +0000 (14:38 +0200)]
wifi: mac80211: check SSID in beacon
Check that the SSID in beacons is correct, if it's not hidden
and beacon protection is enabled (otherwise there's no value).
If it doesn't match, disconnect.
Johannes Berg [Wed, 12 Jun 2024 12:35:57 +0000 (14:35 +0200)]
wifi: mac80211: correcty limit wider BW TDLS STAs
When updating a channel context, the code can apply wider
bandwidth TDLS STA channel definitions to each and every
channel context used by the device, an approach that will
surely lead to problems if there is ever more than one.
Restrict the wider BW TDLS STA consideration to only TDLS
STAs that are actually related to links using the channel
context being updated.
Johannes Berg [Wed, 12 Jun 2024 12:32:06 +0000 (14:32 +0200)]
wifi: mac80211: update STA/chandef width during switch
In channel switch without an additional channel context,
where the reassign logic kicks in, we also need to update
the station bandwidth and chandef minimum width correctly
to avoid having station rate control configured to wider
bandwidth than the channel context. Do that now.
Johannes Berg [Wed, 12 Jun 2024 12:32:05 +0000 (14:32 +0200)]
wifi: mac80211: make ieee80211_chan_bw_change() able to use reserved
Make ieee80211_chan_bw_change() able to use the reserved chanreq
(really the chandef part of it) for the calculations, so it can
be used _without_ applying the changes first. Remove the comment
that indicates this is required, since it no longer is. However,
this capability only gets used later.
Also, this is not ideal, we really should not different so much
between reserved and non-reserved usage, to simplify. That's a
further cleanup later though.
Johannes Berg [Wed, 12 Jun 2024 12:32:03 +0000 (14:32 +0200)]
wifi: mac80211: optionally pass chandef to ieee80211_sta_cap_rx_bw()
We'll need this function to take a new chandef in
(some) channel switching cases, so prepare for that
by allowing that to be passed and using it if so.
Clean up the code a little bit while at it.
Johannes Berg [Wed, 12 Jun 2024 12:28:37 +0000 (14:28 +0200)]
wifi: mac80211: handle protected dual of public action
The code currently handles ECSA (extended channel switch
announcement) public action frames. Handle also their
protected dual, which actually is protected.
Johannes Berg [Wed, 12 Jun 2024 12:28:36 +0000 (14:28 +0200)]
wifi: mac80211: restrict public action ECSA frame handling
Public action extended channel switch announcement (ECSA)
frames cannot be protected well, the spec is unclear about
what should happen in the presence of stations that can
receive protected dual and stations that cannot.
Mitigate these issues by not treating public action frames
as the absolute truth, only treat them as a hint to stop
transmitting (quiet mode), and do the remainder of the CSA
handling only when receiving the next beacon (or protected
action frame) that contains the CSA; or, if it doesn't,
simply stop being quiet and continue operating normally.
This limits the exposure to malicious ECSA public action
frames, since they cannot cause a disconnect now, only a
short interruption in traffic.
Alexis Lothoré [Thu, 13 Jun 2024 14:06:45 +0000 (16:06 +0200)]
wifi: wilc1000: disable SDIO func IRQ before suspend
Issuing a system suspend command raises the following warning:
WARNING: CPU: 0 PID: 15 at drivers/mmc/core/sdio.c:1042 mmc_sdio_suspend+0xd4/0x19c
CPU: 0 PID: 15 Comm: kworker/u2:1 Not tainted 6.7.0-rc1-wt+ #710
Hardware name: Atmel SAMA5
Workqueue: events_unbound async_run_entry_fn
unwind_backtrace from show_stack+0x18/0x1c
show_stack from dump_stack_lvl+0x34/0x48
dump_stack_lvl from __warn+0x98/0x160
__warn from warn_slowpath_fmt+0xcc/0x140
warn_slowpath_fmt from mmc_sdio_suspend+0xd4/0x19c
mmc_sdio_suspend from mmc_bus_suspend+0x50/0x70
mmc_bus_suspend from dpm_run_callback+0xe4/0x248
dpm_run_callback from __device_suspend+0x234/0x91c
__device_suspend from async_suspend+0x24/0x9c
async_suspend from async_run_entry_fn+0x6c/0x210
async_run_entry_fn from process_one_work+0x3a0/0x870
[...]
This warning is due to a check in SDIO core ensuring that interrupts do not
remain enabled for cards being powered down during suspend. WILC driver
currently does not set the MMC_PM_KEEP_POWER flag, so disable interrupt
when entering resume.
Alexis Lothoré [Thu, 13 Jun 2024 14:06:44 +0000 (16:06 +0200)]
wifi: wilc1000: remove suspend/resume from cfg80211 part
WILC1000 suspend/resume implementation is currently composed of two parts:
suspend/resume ops implemented in cfg80211 ops, which merely sets a
flag, and suspend/resume ops in sdio/spi driver which, based on this flag,
execute or not the suspend/resume mechanism. This dual set of ops is not
really needed , so keep only the sdio part to implement suspend/resume.
While doing so, remove the now unused suspend_event flag.
Alexis Lothoré [Thu, 13 Jun 2024 14:06:41 +0000 (16:06 +0200)]
wifi: wilc1000: let host->chip suspend/resume notifications manage chip wake/sleep
host_wakeup_notify and host_sleep_notify are surrounded by chip_wakeup and
chip_allow_sleep calls, which theorically need to be protected with the
hif_cs lock. This lock protection is currently missing. Instead of adding
the lock where those two functions are called, move those in host->chip
suspend notifications to benefit from the lock already used there (in
bus_acquire/bus_release)
Ajay Singh [Thu, 13 Jun 2024 14:06:40 +0000 (16:06 +0200)]
wifi: wilc1000: disable power sequencer
Driver systematically disables some power mechanism each time it starts the
chip firmware (so mostly when interface is brought up). This has a negative
impact on some specific scenarios when the chip is exposed as a
hotpluggable SDIO card (eg: WILC1000 SD):
- when executing suspend/resume sequence while interface has been brought
up
- rebooting the platform while module is plugged and interface has been
brought up
Those scenarios lead to mmc core trying to initialize again the chip which
is now unresponsive (because of the power sequencer setting), so it fails
in mmc_rescan->mmc_attach_sdio and enter a failure loop while trying to
send CMD5:
mmc0: error -110 whilst initialising SDIO card
mmc0: error -110 whilst initialising SDIO card
mmc0: error -110 whilst initialising SDIO card
[...]
Preventing the driver from disabling this "power sequencer" fixes those
enumeration issues without affecting nominal operations.
Russell King (Oracle) [Tue, 28 May 2024 09:18:17 +0000 (10:18 +0100)]
wifi: wl18xx: allow firmwares > 8.9.0.x.58
wlcore firmware versions are structured thusly:
chip.if-type.major.sub-type.minor
e.g. 8 9 0 0 58
With WL18xx ignoring the major firmware version, looking for a
firmware version that conforms to:
chip >= 8
if-type >= 9
major (don't care)
sub-type (don't care)
minor >= 58
Each test is satisfied if the value read from the firmware is greater
than the minimum, but if it is equal (or we don't care about the
field), then the next field is checked.
Thus it doesn't recognise 8.9.1.x.0 as being newer than 8.9.0.x.58
since the major and sub-type numbers are "don't care" and the minor
needs to be greater or equal to 58.
We need to change the major version from "ignore" to "0" for this later
firmware to be correctly detected, and allow the dual-firmware version
support to work.
Russell King (Oracle) [Tue, 28 May 2024 09:18:12 +0000 (10:18 +0100)]
wifi: wl18xx: add support for reading 8.9.1 fw status
Add the necessary code to read the 8.9.1 firmware status into the
driver private status structure, augmenting the 8.9.0 firmware
status code. New structure layout taken from:
Russell King (Oracle) [Tue, 28 May 2024 09:17:57 +0000 (10:17 +0100)]
wifi: wlcore: pass "status" to wlcore_hw_convert_fw_status()
wlcore_fw_status() is passed a pointer to the struct wl_fw_status to
decode the status into, which is always wl->fw_status. Rather than
referencing wl->fw_status within wlcore_fw_status(), use the supplied
argument so that we access this member in a consistent manner.
Russell King (Oracle) [Tue, 28 May 2024 09:17:52 +0000 (10:17 +0100)]
wifi: wlcore: improve code in wlcore_fw_status()
Referring to status->counters.tx_lnk_free_pkts[i] multiple times leads
to less efficient code. Cache this value in a local variable. This
also makes the code clearer.
Russell King (Oracle) [Tue, 28 May 2024 09:17:47 +0000 (10:17 +0100)]
wifi: wl18xx: make wl18xx_tx_immediate_complete() more efficient
wl18xx_tx_immediate_complete() iterates through the completed transmit
descriptors in a circular fashion, and in doing so uses a modulus
operation that is not a power of two. This leads to inefficient code
generation, which can be easily solved by providing a helper to
increment to the next descriptor. Use this more efficient solution.
Russell King (Oracle) [Tue, 28 May 2024 09:17:42 +0000 (10:17 +0100)]
wifi: wlcore: correctness fix fwlog reading
Fix the calculation of clear_offset, which may overflow the end of
the buffer. However, this is harmless if it does because in that case
it will be recalculated when we copy the chunk of messages at the
start of the buffer.
Wolfram Sang [Mon, 3 Jun 2024 09:15:39 +0000 (11:15 +0200)]
wifi: zd1211rw: use 'time_left' variable with wait_for_completion_timeout()
There is a confusing pattern in the kernel to use a variable named 'timeout' to
store the result of wait_for_completion_timeout() causing patterns like:
timeout = wait_for_completion_timeout(...)
if (!timeout) return -ETIMEDOUT;
with all kinds of permutations. Use 'time_left' as a variable to make the code
self explaining.
Wolfram Sang [Mon, 3 Jun 2024 09:15:37 +0000 (11:15 +0200)]
wifi: p54: use 'time_left' variable with wait_for_completion_interruptible_timeout()
There is a confusing pattern in the kernel to use a variable named 'timeout' to
store the result of wait_for_completion_interruptible_timeout() causing patterns like:
timeout = wait_for_completion_interruptible_timeout(...)
if (!timeout) return -ETIMEDOUT;
with all kinds of permutations. Use 'time_left' as a variable to make the code
self explaining.
Fix to the proper variable type 'long' while here.
Wolfram Sang [Mon, 3 Jun 2024 09:15:36 +0000 (11:15 +0200)]
wifi: mwl8k: use 'time_left' variable with wait_for_completion_timeout()
There is a confusing pattern in the kernel to use a variable named 'timeout' to
store the result of wait_for_completion_timeout() causing patterns like:
timeout = wait_for_completion_timeout(...)
if (!timeout) return -ETIMEDOUT;
with all kinds of permutations. Use 'time_left' as a variable to make the code
self explaining.
the preferred way in the kernel is to use the struct_size() helper to
do the arithmetic instead of the calculation "size + count" in the
kmalloc() function.
Also, declare a new variable (total_size) since the return value of the
struct_size() helper is used several times.
At the same time, prepare for the coming implementation by GCC and Clang
of the __counted_by attribute. Flexible array members annotated with
__counted_by can have their accesses bounds-checked at run-time via
CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for
strcpy/memcpy-family functions). In this case, it is important to note
that the attribute used is "__counted_by_le" since the counter type is
"__le16".
Erick Archer [Sun, 2 Jun 2024 16:13:09 +0000 (18:13 +0200)]
wifi: at76c50x: use sizeof(*pointer) instead of sizeof(type)
It is preferred to use sizeof(*pointer) instead of sizeof(type)
due to the type of the variable can change and one needs not
change the former (unlike the latter). This patch has no effect
on runtime behavior.
At the same time remove some redundant NULL initializations.
Johannes Berg [Wed, 5 Jun 2024 11:07:36 +0000 (14:07 +0300)]
wifi: iwlwifi: mvm: separate non-BSS/ROC EMLSR blocking
If non-BSS and remain-on-channel (ROC) blocking were to occur
simultaneously, they'd step on each other's toes, unblocking
when not yet supported. Disentangle these bits, and ROC doesn't
need to use the non_bss_link() function then.
Miri Korenblit [Wed, 5 Jun 2024 11:05:06 +0000 (14:05 +0300)]
wifi: iwlwifi: mvm: fix re-enabling EMLSR
When EMLSR gets unblocked, the current code checks if the last exit was
due to an EXIT reason (as opposed to a BLOCKING one), and if so, it
does nothing, as in this case a MLO scan was scheduled to run in 30
seconds.
But the code doesn't consider the time that passed from the last exit,
so if immediately after the exit a blocker occurred (e.g. non-BSS
interface), and lasts for more than 30 seconds, then the MLO scan and the
following link selection will decide not to enter EMLSR, and when the
unblocking event finally happens, the reason is still set to the EXIT one,
so it will do nothing, and we will not have the chance to re-enable EMLSR.
Fix this by checking also the time that has passed since the last exit,
only if it is less than 30 seconds, we can count on the scheduled MLO
scan.
Note that clearing the reason itself can't be done since it is needed
for the EMLSR prevention mechanism.
Yedidya Benshimol [Wed, 5 Jun 2024 11:05:03 +0000 (14:05 +0300)]
wifi: iwlwifi: remove struct iwl_trans_ops
This was needed when we had multiple types of transports. Now we only
have pcie, so there is no need for this ops.
Cleanup the code such as the different trans APIs will call the pcie
function directly, instead of calling the callback,
and remove struct iwl_trans_ops.
Johannes Berg [Wed, 5 Jun 2024 11:05:02 +0000 (14:05 +0300)]
wifi: iwlwifi: pcie: integrate TX queue code
The TX queue code was mostly moved out to support an internal
transport that we were never going to publish, but we're no
longer using that. Since we're also going to be dissolving
the virtual transport layer entirely, integrate the TX queue
code into the PCIe layer.
This also has a small kernel of already removing the virtual
transport function layer, since iwl_trans_send_cmd() calls
iwl_trans_pcie_send_hcmd() directly now, even if that still
calls the transport send_cmd method for now, we'll clean it
up later.
Johannes Berg [Wed, 5 Jun 2024 11:05:00 +0000 (14:05 +0300)]
wifi: iwlwifi: move TXQ bytecount limit to queue code
This really isn't correct to be in the opmode, do the clamping
(and power-of-2 fixup that may be necessary due to this, or even
otherwise) in the queue code. Also move down the retrying of the
allocation, it should be after all the size fixups, but also it
just makes sense, and avoids retrying same-size allocations in
the case of the BZ-family A-step workaround.
When entering D3 we want to configure skip over DTIM, but
it can't use the deflink configuration, that will not even
exist. Adjust the code to handle multiple links by taking
the min skip, even if we should only have a single active
link at this point.
Emmanuel Grumbach [Wed, 5 Jun 2024 10:57:20 +0000 (13:57 +0300)]
wifi: cfg80211: honor WIPHY_FLAG_SPLIT_SCAN_6GHZ in cfg80211_conn_scan
If a user uses iw to connect to a network and we don't have any
information about the existing networks, cfg80211 will trigger a scan
internally even if the user didn't ask for a scan. This scan is
implemented by cfg80211_conn_scan(). This function called rdev_scan()
directly without honoring the WIPHY_FLAG_SPLIT_SCAN_6GHZ flag.
Use cfg80211_scan instead, this will split the scan if the low level
driver asked to.
Johannes Berg [Wed, 5 Jun 2024 10:57:18 +0000 (13:57 +0300)]
wifi: mac80211: fix erroneous errors for STA changes
When e.g. wpa_supplicant sets only the MLD "sta" authorized
state, the code actually applies that change, but then returns
an error to userspace anyway because there were no changes to
the link station, and no link ID was given. However, it's not
incorrect to not have a link ID when wanting to change only
the MLD peer ("sta") state, so the code shouldn't require it.
To fix this, separate the "new_link" argument out into a new
three-state enum, because if modify is called on a link STA
only, it should return an error if no link is given or if it
doesn't exist. For modify on the MLD "sta", not having a link
ID is OK, but if there is one it should be validated.
This seems to not have mattered much as wpa_supplicant just
prints a message and continues, and the authorized state was
already set before this error return. However, in the later
code powersave recalculation etc. will be skipped, so that it
may result in never allowing powersave on MLO connections.
Avraham Stern [Wed, 5 Jun 2024 10:57:17 +0000 (13:57 +0300)]
wifi: mac80211_hwsim: add 320 MHz to hwsim channel widths
Setting a channel with 320 MHz channel width over hwsim results in an
array-index-out-of-bounds error. Fix it by adding 320 MHz to hwsim
supported channel widths.
Avraham Stern [Wed, 5 Jun 2024 10:57:16 +0000 (13:57 +0300)]
wifi: nl80211: remove the FTMs per burst limit for NDP ranging
In NDP ranging, the number of NDP exchanges is not negotiated
and thus is not limited by the protocol. Remove the limit on
FTMs per burst for trigger based and non trigger based ranging.
Benjamin Berg [Sun, 2 Jun 2024 07:22:00 +0000 (10:22 +0300)]
wifi: cfg80211: reject non-conformant 6 GHz center frequencies
On 6 GHz (and also 5 GHz to some degree), only a specific set of center
frequencies should be used depending on the channel bandwidth. Verify
this is the case on 6 GHz. For 5 GHz, we are more accepting as there are
APs that got it wrong historically.
There are two functions exported now, with different settings,
refactor to just export a single function that take a struct
with different settings. This will make it easier to add more
parameters.
Johannes Berg [Thu, 23 May 2024 10:09:47 +0000 (12:09 +0200)]
wifi: cfg80211: refactor 6 GHz AP power type parsing
Add cfg80211_get_6ghz_power_type() to parse the 6 GHz
power type from a given set of elements, which is now
only inside cfg80211_6ghz_power_type_valid().
Johannes Berg [Thu, 23 May 2024 10:09:46 +0000 (12:09 +0200)]
wifi: mac80211: refactor channel checks
To later introduce an override for VLP APs being allowed despite
NO-IR flags, which is somewhat similar in construction to being
allowed to monitor on disabled channels, refactor the code that
checks channel flags to have not a 'monitor' argument but a set
of 'permitting' flags that permit the operation without checking
for 'prohibited' flags.
Johannes Berg [Thu, 23 May 2024 10:09:45 +0000 (12:09 +0200)]
wifi: cfg80211: move enum ieee80211_ap_reg_power to cfg80211
This really shouldn't have been in ieee80211.h, since it
doesn't directly represent the spec. Move it to cfg80211
rather than mac80211 since upcoming changes will use it
there.
Breno Leitao [Fri, 7 Jun 2024 10:20:44 +0000 (03:20 -0700)]
wifi: mac80211: Remove generic .ndo_get_stats64
Commit 3e2f544dd8a33 ("net: get stats64 if device if driver is
configured") moved the callback to dev_get_tstats64() to net core, so,
unless the driver is doing some custom stats collection, it does not
need to set .ndo_get_stats64.
Since this driver is now relying in NETDEV_PCPU_STAT_TSTATS, then, it
doesn't need to set the dev_get_tstats64() generic .ndo_get_stats64
function pointer.
In this driver specifically, .ndo_get_stats64 basically points to
dev_fetch_sw_netstats(). Now it will point to dev_get_tstats64(), which
calls netdev_stats_to_stats64() and dev_fetch_sw_netstats().
netdev_stats_to_stats64() seems irrelevant for this driver.
Breno Leitao [Fri, 7 Jun 2024 10:20:43 +0000 (03:20 -0700)]
wifi: mac80211: Move stats allocation to core
With commit 34d21de99cea9 ("net: Move {l,t,d}stats allocation to core and
convert veth & vrf"), stats allocation could be done on net core instead
of this driver.
With this new approach, the driver doesn't have to bother with error
handling (allocation failure checking, making sure free happens in the
right spot, etc). This is core responsibility now.
Move mac80211 driver to leverage the core allocation.
Johannes Berg [Fri, 7 Jun 2024 18:17:17 +0000 (20:17 +0200)]
wifi: cfg80211: make hash table duplicates more survivable
Jiazi Li reported that they occasionally see hash table duplicates
as evidenced by the WARN_ON() in rb_insert_bss() in this code. It
isn't clear how that happens, nor have I been able to reproduce it,
but if it does happen, the kernel crashes later, when it tries to
unhash the entry that's now not hashed.
Try to make this situation more survivable by removing the BSS from
the list(s) as well, that way it's fully leaked here (as had been
the intent in the hash insert error path), and no longer reachable
through the list(s) so it shouldn't be unhashed again later.
Johannes Berg [Wed, 12 Jun 2024 08:05:33 +0000 (10:05 +0200)]
wifi: mac80211: correct EHT EIRP TPE parsing
For the EHT EIRP transmit power envelope, the 320 MHz is in
the last octet, but if we've copied 4 octets (count == 3),
the next one is at index 4 not 5 (count + 2). Fix this, and
just hardcode the offset since count is always 3 here.
====================
Intel Wired LAN Driver Updates 2024-06-03
This series includes miscellaneous improvements for the ice as well as a
cleanup to the Makefiles for all Intel net drivers.
Andy fixes all of the Intel net driver Makefiles to use the documented
'*-y' syntax for specifying object files to link into kernel driver
modules, rather than the '*-objs' syntax which works but is documented as
reserved for user-space host programs.
Jacob has a cleanup to refactor rounding logic in the ice driver into a
common roundup_u64 helper function.
Michal Schmidt replaces irq_set_affinity_hint() to use
irq_update_affinity_hint() which behaves better with user-applied affinity
settings.
Michal Schmidt [Fri, 7 Jun 2024 21:22:34 +0000 (14:22 -0700)]
ice: use irq_update_affinity_hint()
irq_set_affinity_hint() is deprecated. Use irq_update_affinity_hint()
instead. This removes the side-effect of actually applying the affinity.
The driver does not really need to worry about spreading its IRQs across
CPUs. The core code already takes care of that.
On the contrary, when the driver applies affinities by itself, it breaks
the users' expectations:
1. The user configures irqbalance with IRQBALANCE_BANNED_CPULIST in
order to prevent IRQs from being moved to certain CPUs that run a
real-time workload.
2. ice reconfigures VSIs at runtime due to a MIB change
(ice_dcb_process_lldp_set_mib_change). Reopening a VSI resets the
affinity in ice_vsi_req_irq_msix().
3. ice has no idea about irqbalance's config, so it may move an IRQ to
a banned CPU. The real-time workload suffers unacceptable latency.
I am not sure if updating the affinity hints is at all useful, because
irqbalance ignores them since 2016 ([1]), but at least it's harmless.
This ice change is similar to i40e commit d34c54d1739c ("i40e: Use
irq_update_affinity_hint()").
Jacob Keller [Fri, 7 Jun 2024 21:22:33 +0000 (14:22 -0700)]
ice: add and use roundup_u64 instead of open coding equivalent
In ice_ptp_cfg_clkout(), the ice driver needs to calculate the nearest next
second of a current time value specified in nanoseconds. It implements this
using div64_u64, because the time value is a u64. It could use div_u64
since NSEC_PER_SEC is smaller than 32-bits.
Ideally this would be implemented directly with roundup(), but that can't
work on all platforms due to a division which requires using the specific
macros and functions due to platform restrictions, and to ensure that the
most appropriate and fast instructions are used.
The kernel doesn't currently provide any 64-bit equivalents for doing
roundup. Attempting to use roundup() on a 32-bit platform will result in a
link failure due to not having a direct 64-bit division.
The closest equivalent for this is DIV64_U64_ROUND_UP, which does a
division always rounding up. However, this only computes the division, and
forces use of the div64_u64 in cases where the divisor is a 32bit value and
could make use of div_u64.
Introduce DIV_U64_ROUND_UP based on div_u64, and then use it to implement
roundup_u64 which takes a u64 input value and a u32 rounding value.
The name roundup_u64 matches the naming scheme of div_u64, and future
patches could implement roundup64_u64 if they need to round by a multiple
that is greater than 32-bits.
Replace the logic in ice_ptp.c which does this equivalent with the newly
added roundup_u64.
Andy Shevchenko [Fri, 7 Jun 2024 21:22:32 +0000 (14:22 -0700)]
net: intel: Use *-y instead of *-objs in Makefile
*-objs suffix is reserved rather for (user-space) host programs while
usually *-y suffix is used for kernel drivers (although *-objs works
for that purpose for now).
Let's correct the old usages of *-objs in Makefiles.
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com> Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Link: https://lore.kernel.org/r/20240607-next-2024-06-03-intel-next-batch-v3-1-d1470cee3347@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
We've added 54 non-merge commits during the last 10 day(s) which contain
a total of 50 files changed, 1887 insertions(+), 527 deletions(-).
The main changes are:
1) Add a user space notification mechanism via epoll when a struct_ops
object is getting detached/unregistered, from Kui-Feng Lee.
2) Big batch of BPF selftest refactoring for sockmap and BPF congctl
tests, from Geliang Tang.
3) Add BTF field (type and string fields, right now) iterator support
to libbpf instead of using existing callback-based approaches,
from Andrii Nakryiko.
4) Extend BPF selftests for the latter with a new btf_field_iter
selftest, from Alan Maguire.
5) Add new kfuncs for a generic, open-coded bits iterator,
from Yafang Shao.
6) Fix BPF selftests' kallsyms_find() helper under kernels configured
with CONFIG_LTO_CLANG_THIN, from Yonghong Song.
7) Remove a bunch of unused structs in BPF selftests,
from David Alan Gilbert.
8) Convert test_sockmap section names into names understood by libbpf
so it can deduce program type and attach type, from Jakub Sitnicki.
9) Extend libbpf with the ability to configure log verbosity
via LIBBPF_LOG_LEVEL environment variable, from Mykyta Yatsenko.
10) Fix BPF selftests with regards to bpf_cookie and find_vma flakiness
in nested VMs, from Song Liu.
11) Extend riscv32/64 JITs to introduce shift/add helpers to generate Zba
optimization, from Xiao Wang.
12) Enable BPF programs to declare arrays and struct fields with kptr,
bpf_rb_root, and bpf_list_head, from Kui-Feng Lee.
* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (54 commits)
selftests/bpf: Drop useless arguments of do_test in bpf_tcp_ca
selftests/bpf: Use start_test in test_dctcp in bpf_tcp_ca
selftests/bpf: Use start_test in test_dctcp_fallback in bpf_tcp_ca
selftests/bpf: Add start_test helper in bpf_tcp_ca
selftests/bpf: Use connect_to_fd_opts in do_test in bpf_tcp_ca
libbpf: Auto-attach struct_ops BPF maps in BPF skeleton
selftests/bpf: Add btf_field_iter selftests
selftests/bpf: Fix send_signal test with nested CONFIG_PARAVIRT
libbpf: Remove callback-based type/string BTF field visitor helpers
bpftool: Use BTF field iterator in btfgen
libbpf: Make use of BTF field iterator in BTF handling code
libbpf: Make use of BTF field iterator in BPF linker code
libbpf: Add BTF field iterator
selftests/bpf: Ignore .llvm.<hash> suffix in kallsyms_find()
selftests/bpf: Fix bpf_cookie and find_vma in nested VM
selftests/bpf: Test global bpf_list_head arrays.
selftests/bpf: Test global bpf_rb_root arrays and fields in nested struct types.
selftests/bpf: Test kptr arrays and kptrs in nested struct fields.
bpf: limit the number of levels of a nested struct type.
bpf: look into the types of the fields of a struct type recursively.
...
====================
Jakub Kicinski [Tue, 11 Jun 2024 00:40:25 +0000 (17:40 -0700)]
Merge tag 'wireless-next-2024-06-07' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
Kalle Valo says:
====================
wireless-next patches for v6.11
The first "new features" pull request for v6.11 with changes both in
stack and in drivers. Nothing out of ordinary, except that we have
two conflicts this time:
cfg80211/mac80211
* parse Transmit Power Envelope (TPE) data in mac80211 instead of in drivers
wilc1000
* read MAC address during probe to make it visible to user space
iwlwifi
* bump FW API to 91 for BZ/SC devices
* report 64-bit radiotap timestamp
* enable P2P low latency by default
* handle Transmit Power Envelope (TPE) advertised by AP
* start using guard()
rtlwifi
* RTL8192DU support
ath12k
* remove unsupported tx monitor handling
* channel 2 in 6 GHz band support
* Spatial Multiplexing Power Save (SMPS) in 6 GHz band support
* multiple BSSID (MBSSID) and Enhanced Multi-BSSID Advertisements (EMA)
support
* dynamic VLAN support
* add panic handler for resetting the firmware state
ath10k
* add qcom,no-msa-ready-indicator Device Tree property
* LED support for various chipsets
* tag 'wireless-next-2024-06-07' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (194 commits)
wifi: ath12k: add hw_link_id in ath12k_pdev
wifi: ath12k: add panic handler
wifi: rtw89: chan: Use swap() in rtw89_swap_sub_entity()
wifi: brcm80211: remove unused structs
wifi: brcm80211: use sizeof(*pointer) instead of sizeof(type)
wifi: ath12k: do not process consecutive RDDM event
dt-bindings: net: wireless: ath11k: Drop "qcom,ipq8074-wcss-pil" from example
wifi: ath12k: fix memory leak in ath12k_dp_rx_peer_frag_setup()
wifi: rtlwifi: handle return value of usb init TX/RX
wifi: rtlwifi: Enable the new rtl8192du driver
wifi: rtlwifi: Add rtl8192du/sw.c
wifi: rtlwifi: Constify rtl_hal_cfg.{ops,usb_interface_cfg} and rtl_priv.cfg
wifi: rtlwifi: Add rtl8192du/dm.{c,h}
wifi: rtlwifi: Add rtl8192du/fw.{c,h} and rtl8192du/led.{c,h}
wifi: rtlwifi: Add rtl8192du/rf.{c,h}
wifi: rtlwifi: Add rtl8192du/trx.{c,h}
wifi: rtlwifi: Add rtl8192du/phy.{c,h}
wifi: rtlwifi: Add rtl8192du/hw.{c,h}
wifi: rtlwifi: Add new members to struct rtl_priv for RTL8192DU
wifi: rtlwifi: Add rtl8192du/table.{c,h}
...
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
====================
David S. Miller [Mon, 10 Jun 2024 12:48:06 +0000 (13:48 +0100)]
Merge branch 'fix-changing-dsa-conduit'
Marek Behún says:
====================
Fix changing DSA conduit
This series fixes an issue in the DSA code related to host interface UC
address installed into port FDB and port conduit address database when
live-changing port conduit.
The first patch refactores/deduplicates the installation/uninstallation
of the interface's MAC address and the second patch fixes the issue.
Cover letter for v1 and v2:
https://patchwork.kernel.org/project/netdevbpf/cover/20240429163627.16031-1-kabel@kernel.org/
https://patchwork.kernel.org/project/netdevbpf/cover/20240502122922.28139-1-kabel@kernel.org/
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Marek Behún [Wed, 5 Jun 2024 13:33:29 +0000 (15:33 +0200)]
net: dsa: update the unicast MAC address when changing conduit
When changing DSA user interface conduit while the user interface is up,
DSA exhibits different behavior in comparison to when the interface is
down. This different behavior concerns the primary unicast MAC address
stored in the port standalone FDB and in the conduit device UC database.
If we put a switch port down while changing the conduit with
ip link set sw0p0 down
ip link set sw0p0 type dsa conduit conduit1
ip link set sw0p0 up
we delete the address in dsa_user_close() and install the (possibly
different) address in dsa_user_open().
But when changing the conduit on the fly, the old address is not
deleted and the new one is not installed.
Since we explicitly want to support live-changing the conduit, uninstall
the old address before calling dsa_port_assign_conduit() and install the
(possibly different) new address after the call.
Because conduit change might also trigger address change (the user
interface is supposed to inherit the conduit interface MAC address if no
address is defined in hardware (dp->mac is a zero address)), move the
eth_hw_addr_inherit() call from dsa_user_change_conduit() to
dsa_port_change_conduit(), just before installing the new address.
Although this is in theory a flaw in DSA core, it needs not be
backported, since there is currently no DSA driver that can be affected
by this. The only DSA driver that supports changing conduit is felix,
and, as explained by Vladimir Oltean [1]:
There are 2 reasons why with felix the bug does not manifest itself.
First is because both the 'ocelot' and the alternate 'ocelot-8021q'
tagging protocols have the 'promisc_on_conduit = true' flag. So the
unicast address doesn't have to be in the conduit's RX filter -
neither the old or the new conduit.
Second, dsa_user_host_uc_install() theoretically leaves behind host
FDB entries installed towards the wrong (old) CPU port. But in
felix_fdb_add(), we treat any FDB entry requested towards any CPU port
as if it was a multicast FDB entry programmed towards _all_ CPU ports.
For that reason, it is installed towards the port mask of the PGID_CPU
port group ID:
if (dsa_port_is_cpu(dp))
port = PGID_CPU;
Therefore no Fixes tag for this change.
[1] https://lore.kernel.org/netdev/20240507201827.47suw4fwcjrbungy@skbuf/ Signed-off-by: Marek Behún <kabel@kernel.org> Reviewed-by: Vladimir Oltean <olteanv@gmail.com> Tested-by: Vladimir Oltean <olteanv@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Marek Behún [Wed, 5 Jun 2024 13:33:28 +0000 (15:33 +0200)]
net: dsa: deduplicate code adding / deleting the port address to fdb
The sequence
if (dsa_switch_supports_uc_filtering(ds))
dsa_port_standalone_host_fdb_add(dp, addr, 0);
if (!ether_addr_equal(addr, conduit->dev_addr))
dev_uc_add(conduit, addr);
is executed both in dsa_user_open() and dsa_user_set_mac_addr().
Its reverse is executed both in dsa_user_close() and
dsa_user_set_mac_addr().
Refactor these sequences into new functions dsa_user_host_uc_install()
and dsa_user_host_uc_uninstall().
Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 10 Jun 2024 12:15:40 +0000 (13:15 +0100)]
Merge branch 'rtnetlink-rtnl_lock'
Jakub Kicinski says:
====================
rtnetlink: move rtnl_lock handling out of af_netlink
With the changes done in commit 5b4b62a169e1 ("rtnetlink: make
the "split" NLM_DONE handling generic") we can also move the
rtnl locking out of af_netlink.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 6 Jun 2024 19:29:06 +0000 (12:29 -0700)]
net: netlink: remove the cb_mutex "injection" from netlink core
Back in 2007, in commit af65bdfce98d ("[NETLINK]: Switch cb_lock spinlock
to mutex and allow to override it") netlink core was extended to allow
subsystems to replace the dump mutex lock with its own lock.
The mechanism was used by rtnetlink to take rtnl_lock but it isn't
sufficiently flexible for other users. Over the 17 years since
it was added no other user appeared. Since rtnetlink needs conditional
locking now, and doesn't use it either, axe this feature complete.
Signed-off-by: Jakub Kicinski <kuba@kernel.org> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Thu, 6 Jun 2024 19:29:05 +0000 (12:29 -0700)]
rtnetlink: move rtnl_lock handling out of af_netlink
Now that we have an intermediate layer of code for handling
rtnl-level netlink dump quirks, we can move the rtnl_lock
taking there.
For dump handlers with RTNL_FLAG_DUMP_SPLIT_NLM_DONE we can
avoid taking rtnl_lock just to generate NLM_DONE, once again.
Signed-off-by: Jakub Kicinski <kuba@kernel.org> Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Shevchenko [Thu, 6 Jun 2024 16:15:49 +0000 (19:15 +0300)]
net: dsa: hellcreek: Replace kernel.h with what is used
kernel.h is included solely for some other existing headers.
Include them directly and get rid of kernel.h.
While at it, sort headers alphabetically for easier maintenance.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Kurt Kanzenbach <kurt@linutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 10 Jun 2024 10:54:19 +0000 (11:54 +0100)]
Merge branch 'tcp-up-pin-tw-timer'
Florian Westphal says:
====================
net: tcp: un-pin tw timer
Changes since previous iteration:
- Patch 1: update a comment, I copied Erics v7 RvB tag.
- Patch 2: move bh off/on into hashdance_schedule and get rid of
comment mentioning pinned tw timer.
I did not copy Erics RvB tag over from v7 because of the change.
- Patch 3 is unchanged, so I kept Erics RvB tag.
This is v8 of the series where the tw_timer is un-pinned to get rid of
interferences in isolated CPUs setups.
First patch makes necessary preparations, existing code relies on
TIMER_PINNED to avoid races.
Second patch un-pins the TW timer. Could be folded into the first one,
but it might help wrt. bisection.
Third patch is a minor cleanup to move a helper from .h to the only
remaining compilation unit.
Tested with iperf3 and stress-ng socket mode.
====================
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Westphal [Thu, 6 Jun 2024 15:11:38 +0000 (17:11 +0200)]
net: tcp: un-pin the tw_timer
After previous patch, even if timer fires immediately on another CPU,
context that schedules the timer now holds the ehash spinlock, so timer
cannot reap tw socket until ehash lock is released.
BH disable is moved into hashdance_schedule.
Signed-off-by: Florian Westphal <fw@strlen.de> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Valentin Schneider [Thu, 6 Jun 2024 15:11:37 +0000 (17:11 +0200)]
net: tcp/dccp: prepare for tw_timer un-pinning
The TCP timewait timer is proving to be problematic for setups where
scheduler CPU isolation is achieved at runtime via cpusets (as opposed to
statically via isolcpus=domains).
What happens there is a CPU goes through tcp_time_wait(), arming the
time_wait timer, then gets isolated. TCP_TIMEWAIT_LEN later, the timer
fires, causing interference for the now-isolated CPU. This is conceptually
similar to the issue described in commit e02b93124855 ("workqueue: Unbind
kworkers before sending them to exit()")
Move inet_twsk_schedule() to within inet_twsk_hashdance(), with the ehash
lock held. Expand the lock's critical section from inet_twsk_kill() to
inet_twsk_deschedule_put(), serializing the scheduling vs descheduling of
the timer. IOW, this prevents the following race:
Thanks to Paolo Abeni for suggesting to leverage the ehash lock.
This also restores a comment from commit ec94c2696f0b ("tcp/dccp: avoid
one atomic operation for timewait hashdance") as inet_twsk_hashdance() had
a "Step 1" and "Step 3" comment, but the "Step 2" had gone missing.
inet_twsk_deschedule_put() now acquires the ehash spinlock to synchronize
with inet_twsk_hashdance_schedule().
To ease possible regression search, actual un-pin is done in next patch.
Link: https://lore.kernel.org/all/ZPhpfMjSiHVjQkTk@localhost.localdomain/ Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Valentin Schneider <vschneid@redhat.com> Co-developed-by: Florian Westphal <fw@strlen.de> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
projects / users / hch / configfs.git / log