Introduce ath12k_dp_link_peer_free() to wrap cleanup steps required before
freeing a DP link peer. This avoids code duplication and ensures consistent
teardown across multiple call flows.
Currently ath12k_link_sta has data path stats updated in tx_htt and rx monitor
path. Move those stats from ath12_link_sta to ath12k_dp_link_peer to align with
peer modularization model as shown above.
This allows datapath to use only ath12k_dp_link_peer without having to reach out
to other objects for updating stats, thereby improving the cache locality.
Add following API to fetch rate info from DP link peer:
ath12k_dp_link_peer_get_sta_rate_info_stats()
This wrapper API populates link stats in 'struct ath12k_dp_link_peer_rate_info',
which can be extended to support out-of-band retrieval of various rate stats.
As part of data path modularization of device object framework, the per packet
tx/rx operations now use ath12k_dp. Move all the device stats 'device_stats'
from ath12k_base to ath12k_dp, consolidating all device stats within ath12k_dp.
This would improve the performance by allowing the datapath to reach to the
stats counters without to having to reach out to ath12k_base object.
wifi: ath12k: Add callbacks in arch_ops for rx APIs
Facilitate modular and architecture-agnostic access to Wi-Fi 7 Rx functionality
by introducing wrapper APIs in common module for existing RX callbacks already
defined in arch_ops.
Also remove redundant ar usage in these APIs and registered callbacks
definitions, and change the callback names of few of the APIs to remove the
redundant usage of "dp".
wifi: ath12k: Use ath12k_dp_peer in per packet Tx & Rx paths
Move link agnostic data path parameters (keys, rx_tid, reorder buffers, MIC
context etc) from ath12k_sta and ath12k_dp_link_peer into ath12k_dp_peer. These
parameters are shared across MLO links and should be managed at the peer level.
Configure them only when the link peer is primary to avoid redundancy and ensure
consistent setup.
Switch per-packet Tx/Rx paths and monitor paths to look up ath12k_dp_peer and
ath12k_dp_link_peer via peer_id.
Ensure RCU read lock is held when using these helpers APIs.
With the above API ath12k_dp_link_peer_find_by_peerid() being used to find
ath12k_dp_link_peer, existing API ath12k_dp_link_peer_find_by_id() is required
only at the time of unmap event from firmware since it fetches the
ath12k_dp_link_peer from linked list.
In order to restrict the usage of API ath12k_dp_link_peer_find_by_id(), make it
static and also rename it to ath12k_dp_link_peer_search_by_id().
ath12k_dp_peer maintains an array of RCU-protected pointers
"link_peers[ATH12K_NUM_MAX_LINKS]" to ath12k_dp_link_peer indexed by its
protocol_link_id, and each ath12k_dp_link_peer holds a back pointer to its
parent ath12k_dp_peer.
Attach is performed after link peer creation, and detach occurs before link peer
deletion. This ensures consistent lifetime management and safe concurrent
access.
ath12k_dp_peer also maintains an array "hw_links[ATH12K_GROUP_MAX_RADIO]" to
store the mapping between hw_link_id and protocol_link_id for each of the
ath12k_dp_link_peer.
RCU locking/unlocking rules:
- Readers must hold rcu_read_lock() and fetch the pointer with
rcu_dereference(dp_peer->link[link_id]); drop with rcu_read_unlock() when
done.
- Writers publish with rcu_assign_pointer() and reclaim only after
synchronize_rcu().
Handle the case of detachment of link peer from ath12k_dp_peer in case of core
reset.
Ensure the following order of locks to be followed for attach and detach:
- Lock dp->dp_lock
- Lock dp_hw->peer_lock
- Unlock dp_hw->peer_lock
- Unlock dp->dp_lock
Define the structure of ath12k_dp_peer and also define APIs for creation and
deletion of ath12k_dp_peer based on STA state, as the ath12k_dp_peer is intended
to be used in the subsequent set of patches.
Maintain ath12k_dp_peer in a linked list in ath12k_dp_hw (which is a datapath
component of ath12k_hw) and protect this list using spinlock "peer_lock".
Store peer id based table (array of RCU pointers) of ath12k_dp_peer in
ath12k_dp_hw. Use this peer id table to refer in the per packet Tx and Rx paths
as it provides faster access to ath12k_dp_peer in comparison to linked list
iterative search using peer id or mac address.
Add support to handle deletion of ath12k_dp_peer in case of core reset.
This patch is adding and deleting ath12k_dp_peer created for MLO STA to the
above mentioned RCU pointer table. Addition and deletion of ath12k_dp_peer for
non-MLO STA to RCU pointer table is handled in the subsequent following patch.
Structure ath12k_ml_peer is created and deleted for MLO peers at the time
of connect and disconnect and there is no other use case of it. With the
above design in place for ath12k_dp_peer, ath12k_ml_peer becomes redundant.
Hence, remove the structure ath12k_ml_peer and the list "ml_peers" present
in ath12k_hw maintaining linked list of ath12k_ml_peer.
wifi: ath12k: Add hash table for ath12k_dp_link_peer
There is a linked list of ath12k_dp_link_peer maintained in ath12k_dp. For
link peer search based on mac address, there is iteration over the list wherein
the mac address are compared for each entry in the list. This search operation
is a costly operation considering the time complexity involved.
In order to reduce the complexity, add hash table for ath12k_dp_link_peer in
ath12k_dp where mac address of the link peer is used to derive the hash index.
This hash table is lock protected by spinlock "dp_lock" present in ath12k_dp.
This hash table is currently used for search of link peer using mac address for
any interaction between control path and data path, per packet Rx monitor path
and regular multicast Tx path.
Update API ath12k_dp_link_peer_find_by_addr() to make use of the hash table for
search operation using mac address, while other search APIs still rely on linked
list.
ath11k driver has been taken as reference for implementation of hash table.
wifi: ath12k: Move ath12k_dp_link_peer list from ath12k_base to ath12k_dp
ath12k_base maintains a linked list of ath12k_dp_link_peer. This linked list is
used for all kind of peer search operations.
With the modularization of device and peer objects for ath12k next-generation
driver, ath12k_dp_link_peer and ath12k_dp are exclusively meant for datapath
related operations.
Hence move ath12k_dp_link_peer linked list from ath12k_base to ath12k_dp. This
linked list is to be lock protected by newly introduced spinlock "dp_lock"
defined in ath12k_dp as this list can be concurrently accessed in different
contexts for insert, delete and search operations.
With the above changes, update following APIs to make use of lock "dp->dp_lock"
instead of lock "ab->base_lock" and also update API signatures to pass ath12k_dp
pointer instead of ath12k_base pointer as the function argument.
wifi: ath12k: Add hash table for ath12k_link_sta in ath12k_base
Currently ath12k_base maintains a linked list of ath12k_dp_link_peer as "peers".
This linked list is used for all kinds of peer search operations.
In the control path, if there is a requirement to search for ath12k_link_sta
using mac address, then below sequence is to be followed:
1. Find ath12k_dp_link_peer in the linked list using mac address
2. Fetch ieee80211_sta from ath12k_dp_link_peer
3. Fetch ath12k_sta from ieee80211_sta
4. Finally fetch ath12k_link_sta from ath12k_sta using link_id
In the above sequence, there are too many indirections involved.
In order to simplify this, add hash table for ath12k_link_sta in ath12k_base.
This hash table is lock protected by existing spinlock "base_lock" in
ath12k_base as this table can be concurrently accessed in different contexts.
Use this table for ath12k_link_sta search operations using mac address in the
control path.
Ex: For WMI interface and mac80211_ops interface in the control path, sta mac
address is received and this hash table can be used to search for
ath12k_link_sta directly instead of following the longer route mentioned above.
Helper APIs added:
- ath12k_link_sta_rhash_add() - To add arsta entry to hash table
- ath12k_link_sta_rhash_delete() - To remove arsta entry from hash table
- ath12k_link_sta_find_by_addr() - To find arsta from hash table using
mac address
Make changes in API ath12k_peer_sta_kickout_event() to find arsta using above
mechanism.
ath11k driver has been taken as reference for implementation of hash table.
wifi: ath12k: Rename ath12k_peer to ath12k_dp_link_peer
Rename ath12k_peer to ath12k_dp_link_peer for all instances and rename the
following find APIs accordingly to reflect the API names as per the structural
name change.
wifi: ath12k: Move DP related functions from peer.c to dp_peer.c file
Refactor the structures and APIs defined in files peer.h and peer.c in such a
way that the APIs making use of ath12k_peer are moved to newly introduced files
dp_peer.h and dp_peer.c.
Have this new file dp_peer.c compiled as part of kernel module ath12k.ko.
Move these APIs from peer.h and peer.c to dp_peer.h and dp_peer.c:
ath12k_peer_find()
ath12k_peer_find_by_pdev_idx()
ath12k_peer_find_by_addr()
ath12k_peer_find_by_ml_id()
ath12k_peer_find_by_id()
ath12k_peer_exist_by_vdev_id()
ath12k_peer_find_by_ast()
ath12k_peer_unmap_event()
ath12k_peer_map_event()
ath12k_peer_get_link_sta()
Background:
In current ath12k architecture, connected station is represented by struct
ath12k_sta.
struct ath12k_sta has an array of struct ath12k_link_sta wherein each index
represents one link of the connected station.
For each ath12k_link_sta, there is a corresponding data path peer which is
represented by struct ath12k_peer.
Currently, in control path, ath12k_link_sta and ath12k_peer are used
interchangeably, while the data path makes use of ath12k_peer only.
For ath12k next-generation driver framework, in order to have a clean
segregation between control and data path, use ath12k_link_sta only for control
path operations.
Station view for the data path is revamped as below:
Introduce the structure ath12k_dp_peer to represent the data path version of
corresponding ath12k_sta.
This ath12k_dp_peer contains the fields used in the per packet Tx Rx paths
applicable across all the links and maintains an array of ath12k_dp_link_peer.
Per packet Tx and Rx path operates on ath12k_dp_peer. This ath12k_dp_peer is a
standalone new object and has back pointer reference to ieee80211_sta.
Rename ath12k_peer to ath12k_dp_link_peer and move the fields which are common
across all the links to ath12k_dp_peer.
Add the fields specific to a link which are mostly for statistics and monitor
usage to ath12k_dp_link_peer.
Final view of station in ath12k next-generation driver is shown as below:
Ripan Deuri [Thu, 9 Oct 2025 11:10:44 +0000 (16:40 +0530)]
wifi: ath12k: Rename hal_ops to ops
Rename the hal_ops member in the HAL context to ops. The prefix is
dropped to avoid redundancy, as the structure already resides within
the HAL context.
wifi: ath12k: Segregate the common and wifi7 specific structures
Segregate the common and wifi7 specific structures in hal,
and move them to corresponding header files.
hal.h file in common directory is used by both common
and wifi7 directory files, while hal.h and other hal headers
are used only by files within the wifi7 directory since
these headers contain hw specific hal data.
wifi: ath12k: Move HAL Cookie Conversion and RBM related APIs to wifi7 directory
Move the hardware specific HAL APIs to hal.c file
inside wifi7 directory. These APIs will be called
through the hal_ops mechanism, which are registered
separately by qcn and wcn
Handling following APIs:
ath12k_wifi7_hal_cc_config
ath12k_wifi7_hal_get_idle_link_rbm
wifi: ath12k: Move HAL REO and Rx buf related APIs to wifi7 directory
Move the hardware specific HAL APIs to hal.c file
inside wifi7 directory. These APIs will be called
through the hal_ops mechanism, which are registered
separately by qcn and wcn
Handling following APIs:
ath12k_wifi7_hal_reo_qdesc_setup
ath12k_wifi7_hal_reo_init_cmd_ring
ath12k_wifi7_hal_reo_hw_setup
ath12k_wifi7_hal_rx_buf_addr_info_set
ath12k_wifi7_hal_rx_buf_addr_info_get
wifi: ath12k: Move HAL Tx, REO and link idle setup related APIs to wifi7 directory
Move the hardware specific HAL APIs to hal.c file
inside wifi7 directory. These APIs will be called
through the hal_ops mechanism, which are registered
separately by qcn and wcn
Handling following APIs:
ath12k_wifi7_hal_tx_set_dscp_tid_map
ath12k_wifi7_hal_tx_configure_bank_register
ath12k_hal_reoq_lut_addr_read_enable
ath12k_hal_reoq_lut_set_max_peerid
ath12k_wifi7_hal_write_reoq_lut_addr
ath12k_wifi7_hal_write_ml_reoq_lut_addr
ath12k_wifi7_hal_setup_link_idle_list
wifi: ath12k: Move HAL CE status and set link desc addr APIs to wifi7 directory
Move the hardware specific HAL APIs to hal.c file
inside wifi7 directory. These APIs will be called
through the hal_ops mechanism, which are registered
separately by qcn and wcn
Handling following APIs:
ath12k_wifi7_hal_ce_dst_status_get_length
ath12k_wifi7_hal_set_link_desc_addr
wifi: ath12k: Move HAL CE desc related APIs to wifi7 directory
Move the hardware specific HAL APIs to hal.c file
inside wifi7 directory. These APIs will be called
through the hal_ops mechanism, which are registered
separately by qcn and wcn
Handling following APIs:
ath12k_wifi7_hal_ce_get_desc_size
ath12k_wifi7_hal_ce_src_set_desc
ath12k_wifi7_hal_ce_dst_set_desc
wifi: ath12k: Move HAL SRNG shadow config and get ring id APIs to wifi7 directory
Move the hardware specific HAL APIs to hal.c file
inside wifi7 directory. These APIs will be called
through the hal_ops mechanism, which are registered
separately by qcn and wcn
Handling following APIs:
ath12k_wifi7_hal_srng_update_shadow_config
ath12k_wifi7_hal_srng_get_ring_id
wifi: ath12k: Move HAL CE setup and SRNG related APIs to wifi7 directory
Move the hardware specific HAL APIs to hal.c file
inside wifi7 directory. These APIs will be called
through the hal_ops mechanism, which are registered
separately by qcn and wcn
Handling following APIs:
ath12k_wifi7_hal_ce_dst_setup
ath12k_wifi7_hal_srng_src_hw_init
ath12k_wifi7_hal_srng_dst_hw_init
ath12k_wifi7_hal_set_umac_srng_ptr_addr
Add a direct pointer to the HAL context in ath12k_dp. Since ath12k_dp
is frequenctly used in the per-packet data path, this avoids the need
to access the HAL handle through the ab pointer, reducing indirection
in the per-packet data path.
wifi: ath12k: Move hal_params and regs to hal from hw
Move hal_params and regs to hal structure from
the hw structure, since these parameters are used by hal layer
and make corresponding initializations in hal_init.
Modularize the HAL layer by moving hal_ops from ab->hw_params into the
ab->hal. This reduces indirection and allows data path to access HAL ops
directly through the HAL context.
Initialize hal_ops via hal_init using a const table ath12k_hw_version_map.
This approach will be extended to register other HAL parameters during
init.
Remove ab->hw_params->hal_ops as it is no longer needed.
wifi: ath12k: Initialize desc_size through hal_init
Currently desc_size uses a dedicated hal_ops API for initialization.
Combine it with other hal_params to be initialized in a
single API "hal_init" during probe time using a static array.
hal_init will be used as the common API to initialize
all hal parameters during the probe.
Add hal.c file to add hal definitions that are wifi7 specific
but common between qca and wcn chipsets.
Add hal.h header to add wifi7 specific prototypes/Macros etc
wifi: ath12k: Move srng config and hal_ops to hw specific hal files
Move srng config and hal_ops from common hal file to
hw specific hal files, since these implementations are
specific and configurable for each hardware
Ripan Deuri [Tue, 7 Oct 2025 11:02:03 +0000 (16:32 +0530)]
wifi: ath12k: Rearrange PPDU radio stats
Encapsulate PPDU stats in dp_pdev as these stats are related to data path
out-of-band operations. This reorganization improves the structuring of
data path stats and enhances the efficiency of data path operations by
consolidating both in-band (per packet) fields and out-of-band data path
stats within the same ath12k_pdev_dp object.
ppdu_list_lock is used to protect HTT pdev stats update.
Ripan Deuri [Tue, 7 Oct 2025 11:02:02 +0000 (16:32 +0530)]
wifi: ath12k: Refactor data path pdev struct
Refactor struct ath12k_pdev_dp to encapsulate all DP related fields of
radio (ar) and rely on this single pdev object in per packet DP
operations to optimize cache usage.
Introduce an array of RCU-protected ath12k_pdev_dp in DP device object
to find DP pdev directly from the DP device object.
RCU on dp_pdevs[] provides a teardown synchronization mechanism by
ensuring all in-flight access to dp_pdev pointers complete before reclaim.
Once a dp_pdev pointer is obtained, its internal fields can be accessed
as follows:
- Writers update internal fields using their own synchronization.
- Readers may perform lockless reads if occasional inconsistency is
acceptable, or use additional synchronization (e.g., spin_lock,
atomic_t) for a coherent view between readers and writers.
Please note that RCU is used for dp_pdevs[] at this stage to align
with ab->pdevs_active[]. However, if the teardown paths ensure quiescence,
both dp_pdevs[] and pdevs_active[] can be converted to plain pointers,
removing RCU synchronization overhead. This will be evaluated separately.
Move the Data Path (DP)-specific fields from ath12k_vif into a new
structure ath12k_dp_vif, embedded within ath12k_vif. This new structure
contains an array of per-link DP fields represented by ath12k_dp_link_vif.
Since dp_link_vif is small and frequently accessed from ahvif during Tx,
it is stored as an array of structs rather than an array of pointers to
avoid additional indirections and improve cache efficiency. However,
this design comes with a trade-off: because the array is not pointer-based,
it increases memory usage.
Per packet data path makes use of ath12k_dp_vif and ath12k_dp_link_vif.
Add pdev_idx and lmac_id in ath12k_dp_link_vif to avoid accessing ar in
dp tx.
wifi: ath12k: Add framework for hardware specific DP interrupt handler
Currently, the DP service SRNG handler is invoked directly from the NAPI
poll handler, which prevents using different handlers for different
architectures. To fix this, introduce a DP architecture-ops table to
invoke architecture specific handler from NAPI poll handler. Future patches
will leverage this framework to invoke architecture-specific handlers from
common code.
wifi: ath12k: Add framework for hardware specific ieee80211_ops registration
Introduce a framework to register the ieee80211_ops table based on the
underlying hardware architecture. This is necessary to support
architecture-specific implementations of ieee80211_ops such as .tx, which
will be introduced in upcoming patches.
wifi: ath12k: Rearrange DP fields in ath12k_hw_group struct
Introduce the ath12k_dp_hw_group struct within ath12k_hw_group to
encapsulate all Data Path fields, providing a baseline for future
extensions. Add this struct to the top of ath12k_hw_group to allow
optimal usage of cache lines for data path fields, as it is accessed
in multiple tight loops in the per-packet path.
Add cmn_def.h to define common macros shared between DP and other
modules.
wifi: ath12k: Support arch-specific DP device allocation
Add arch_init() and arch_deinit() ops to the PCI and AHB family ops to
support allocation and cleanup of architecture-specific fields in
ath12k_base. Define shared ath12k_wifi7_arch_init() and
ath12k_wifi7_arch_deinit() functions to handle DP device allocation and
cleanup for Wi-Fi 7 across both PCI and AHB. Introduce a new header file
wifi7/core.h to declare functions defined in wifi7/core.c.
Currently, DP device allocation and cleanup are handled via arch_init()
and arch_deinit(), which can be extended to support additional
architecture-specific initialization in the future.
Define common ath12k_wifi7_arch_init() and
ath12k_wifi7_arch_deinit() functions to handle allocation and cleanup
for Wi-Fi 7. Add a new header file wifi7/core.h to declare common Wi-Fi 7
functions.
Add ath12k_wifi7_dp_device_alloc() and ath12k_wifi7_dp_device_free() to
handle allocation and deallocation of the DP device object for Wi-Fi 7.
Add ath12k_dp_cmn_device_init() and ath12k_dp_cmn_device_deinit() to
initialize and deinitialize common DP device fields. Introduce a new header
file dp_cmn.h to declare these functions, which can also be used to expose
new common DP functions that need to be invoked from non-DP code.
Rename existing DP allocation and cleanup functions to ath12k_dp_setup()
and ath12k_dp_cleanup() to better reflect their purpose in the updated
design.
Replicate device-related fields such as device and hw_params in the DP
device object to align with the new design, which limits per packet data
path object usage to DP specific objects.
wifi: ath12k: Convert ath12k_dp member in ath12k_base to pointer
Currently, the Data Path (DP) specific device object (ath12k_dp) is
embedded directly within the ath12k_base structure. The DP object cannot
be extended with architecture-specific fields within a contiguous memory
block with this design.
To address this, convert ath12k_dp into a dynamically allocated object
and store it as a pointer in ath12k_base. This change allows allocation
and initialization of ath12k_dp based on the underlying hardware
architecture. Architecture-specific fields can now be maintained as
private data within a contiguous memory block of ath12k_dp.
This patch (and the forthcoming patches) are intended to serve the purpose
of refactoring different DP objects for the Next Generation ath12k
driver.
The existing usage of rx_ops to reach the hal APIs at multiple place
uses function pointer indirections. In order to avoid multiple function
pointer indirections, add an API to extract the required hal parameters in
the rx path right at the beginning and store them in a structure which
is then leveraged by rest of the rx path.
hal_rx_ops currently includes callbacks used in both critical and
non-critical Rx paths. To reduce function pointer indirection in hot
path, performance-critical ops will be consolidated into a single
extraction API in a follow-up patch.
Begin cleanup by migrating non-performance-critical callbacks from
hal_rx_ops to hal_ops. Once the extraction API is in place, remove
hal_rx_ops entirely to simplify the HAL interface.
wifi: ath12k: Remove non-compact TLV support from QCN
Set compact TLV ops as the default ops by registering them in
hal_rx_ops by default for QCN, and remove non-compact TLV ops and the
corresponding hal APIs for QCN.
Please note that compact TLVs have been supported by the firmware since
the beginning of Wi-Fi 7, so backward compatibility has been maintained.
These changes are specific to QCN as WCN only support non-compact TLVs.
wifi: ath12k: Move HTT Rx specific code to newly introduced files
WLAN Host driver interacts with the Firmware and vice versa using
Host-To-Target (HTT) interface.
HTT interface code is spread across multiple files (ex dp_tx.c, dp_rx.c
etc) and this interface is independent of the underlying architecture Tx
and Rx. Relocate HTT specific code from dp_rx.c to newly introduced file
dp_htt.c for HTT interface. This new file is compiled as part of the
common module ath12k.ko.
wifi: ath12k: Move HTT code in dp.h to newly introduced files
WLAN Host driver interacts with the Firmware and vice versa using
Host-To-Target (HTT) interface.
HTT interface code is spread across multiple files (ex dp_tx.c,
dp_rx.c, dp.h etc) and this interface is independent of the underlying
architecture Tx and Rx.
Relocate HTT specific code from dp.h to newly introduced file dp_htt.h
for HTT interface.
wifi: ath12k: Move ath12k_dp_tx and related APIs to wifi7 directory
Move arch specific TX data path to wifi7 directory as part of Next
Generation (NG) Driver Framework.
Architecture specific APIs:
ath12k_hal_tx_cmd_ext_desc_setup
ath12k_dp_prepare_htt_metadata
ath12k_dp_tx
The moved APIs will be a part of dp_tx.c file inside wifi7 directory.
wifi7/dp_tx.c file will continue to be part of ath12k.ko temporarily
until the corresponding infra for movement to ath12k_wifi7.ko arrives
in upcoming patches.
wifi: ath12k: Move arch specific tx APIs to wifi7 directory
Move arch specific TX data path to wifi7 directory as part of Next
Generation (NG) Driver Framework.
Architecture specific APIs:
ath12k_dp_tx_htt_tx_complete_buf
ath12k_dp_tx_process_htt_tx_complete
ath12k_dp_tx_update_txcompl
ath12k_dp_tx_complete_msdu
ath12k_dp_tx_status_parse
ath12k_dp_tx_completion_handler
The moved APIs will be a part of dp_tx.c file inside wifi7 directory.
wifi7/dp_tx.c file will continue to be part of ath12k.ko temporarily
until the corresponding infra for movement to ath12k_wifi7.ko arrives
in upcoming patches.
wifi: ath12k: Move arch specific rx tid and related functions to wifi7 directory
Move arch specific Rx tid related functions to wifi7 directory.
The moved APIs will be a part of dp_rx.c file inside wifi7 directory.
wifi7/dp_rx.c file will continue to be part of ath12k.ko
temporarily until the corresponding infra for movement
to ath12k_wifi7.ko arrives in upcoming patches.
Architecture specific APIs:
ath12k_peer_rx_tid_qref_reset
ath12k_dp_reo_cache_flush
ath12k_dp_reo_cmd_send
ath12k_peer_rx_tid_reo_update
ath12k_dp_rx_link_desc_return
ath12k_dp_rx_peer_tid_delete
ath12k_peer_rx_tid_qref_setup
wifi: ath12k: Move arch specific REO functions to wifi7 directory
Move arch specific REO functions to wifi7 directory.
The moved APIs will be a part of dp_rx.c file inside wifi7 directory.
wifi7/dp_rx.c file will continue to be part of ath12k.ko temporarily
until the corresponding infra for movement to ath12k_wifi7.ko arrives
in upcoming patches.
Architecture specific APIs:
ath12k_dp_setup_pn_check_reo_cmd
ath12k_dp_rx_assign_reoq
wifi: ath12k: Move srng processing to wifi7 directory
Move ath12k_dp_service_srng API and ath12k_dp_rx_process_reo_status
to wifi7 directory.
As srng processing is specific to architecture (wifi7 / wifi8), the
API ath12k_dp_service_srng is being moved to wifi7 directory. The
file wifi7/dp.c can be used to define wifi7-specifi functions that are
common to both tx and rx.
The API which is invoked as part of service srng,
ath12k_dp_rx_process_reo_status is also moved to wifi7 directory, as
the implementation is specific to HW due to the usage of wifi7
specific HAL macros.
wifi: ath12k: Move regular msdu processing functions to wifi7 directory
Move arch specific RX MSDU processing related functions to wifi7 directory.
The moved APIs will be a part of dp_rx.c file inside wifi7 directory.
wifi7/dp_rx.c file will continue to be part of ath12k.ko temporarily
until the corresponding infra for movement to ath12k_wifi7.ko arrives
in upcoming patches.
Architecture specific APIs:
ath12k_dp_rx_msdu_coalesce
ath12k_dp_rx_h_csum_offload
ath12k_dp_rx_h_mpdu
ath12k_dp_rx_process
ath12k_dp_rx_process_received_packets
ath12k_dp_rx_h_verify_tkip_mic
ath12k_dp_rx_process_msdu
wifi: ath12k: Move rx error and defrag functions to wifi7 directory
Move arch specific RX error and defrag functions to wifi7 directory.
The moved APIs will be a part of dp_rx.c file inside wifi7 directory.
wifi7/dp_rx.c file will continue to be part of ath12k.ko
temporarily until the corresponding infra for movement
to ath12k_wifi7.ko arrives in upcoming patches.
wifi: ath12k: Move rxdma ring config functions to wifi7 directory
Move architecture specific RxDMA functions to wifi7 directory.
The moved APIs will be a part of dp_rx.c file inside wifi7 directory.
wifi7/dp_rx.c file will continue to be part of ath12k.ko temporarily
until the corresponding infra for movement to ath12k_wifi7.ko arrives
in upcoming patches.
Architecture specific APIs:
ath12k_dp_rxdma_ring_sel_config_qcn9274
ath12k_dp_rxdma_ring_sel_config_wcn7850
wifi: ath12k: Move rx_desc.h file to wifi7 directory
Move wifi7 architecture specific file rx_desc.h to wifi7 directory
and rename it to hal_rx_desc.h to match the naming convention used,
and move the common part from it to hal.h file which is in the
common directory.
wifi: ath12k: Move hal_desc.h file to wifi7 directory
Move wifi7 architecture specific file hal_desc.h to wifi7 directory,
and move the common part from it to hal.h file which is in the
common directory.
It is as part of a broader effort to separate common and hardware-specific
code into distinct modules. This modularization enables reuse of the common
driver components across multiple hardware architectures.
wifi: ath12k: Move Rx error related functions to wifi7 directory
Move wifi7 architecture specific Rx error functions from dp_rx.c to
wifi7 directory.
The new wifi7-specific dp_rx.c file will continue to be part of ath12k.ko
temporarily until the corresponding infra for movement to the
ath12k_wifi7.ko arrives in upcoming patches.
Move following architecture specific APIs to wifi7 directory:
Move HAL Rx APIs from dp_rx.c to dp_rx.h to facilitate the separation of
common and hardware-specific code that are dependent on these HAL Rx ops
in upcoming patches.
wifi: ath12k: Move hal_rx.h file to wifi7 directory
Move wifi7 architecture specific file hal_rx.h to wifi7 directory, and move
the common part from it to hal.h file which is in the common directory.
It is as part of a broader effort to separate common and hardware-specific
code into distinct modules. This modularization enables reuse of the common
driver components across multiple hardware architectures.
wifi: ath12k: Move hal_tx.h file to wifi7 directory
Move wifi7 architecture specific file hal_tx.h to wifi7 directory, and move
the common part from it to hal.h file which is in the common directory.
It is as part of a broader effort to separate common and hardware-specific
code into distinct modules. This modularization enables reuse of the common
driver components across multiple hardware architectures.
wifi: ath12k: Move hal_tx and hal_rx to wifi7 directory
Move architecture-specific files hal_rx.c and hal_tx.c into the wifi7
directory as part of a broader effort to separate common and hardware
-specific code into distinct modules. This modularization enables reuse
of the common driver components across multiple hardware architectures.
The relocated files remain part of ath12k.ko temporarily, until the
corresponding infra for movement to the ath12k_wifi7.ko arrives in
upcoming patches.
Kiran Venkatappa [Tue, 12 Aug 2025 17:09:39 +0000 (22:39 +0530)]
wifi: ath12k: Remove HAL define dependencies from shared AHB code
Eliminate HAL-specific defines from the shared AHB implementation.
Store the WFSS register base-already available in hw_params via the
ce_remap structure-in the AHB context and access it directly.
Add the CMEM offset to the ce_remap structure and use it consistently in
shared code. Improve modularity by removing hardware abstraction layer
dependencies from common code paths and enable cleaner separation of
target-specific logic
Kiran Venkatappa [Tue, 12 Aug 2025 17:09:38 +0000 (22:39 +0530)]
wifi: ath12k: Remove HAL defines from shared PCI code
Eliminate use of HAL-specific defines in the shared PCI implementation.
Pass required register offsets during PCI registration and store them in
the PCI context structure. Access offsets directly from the context to
improve modularity and remove hardware-specific dependencies in the
common code path.
Kiran Venkatappa [Tue, 12 Aug 2025 17:09:37 +0000 (22:39 +0530)]
wifi: ath12k: Rename ath12k_* symbols to ath12k_wifi7_* for clarity
Rename functions and global definitions from ath12k_* to ath12k_wifi7_*
to reflect their association with the Wi-Fi 7 specific module.
Align symbol naming with recent relocation of components into the
ath12k/wifi7 directory.
This change improves code clarity and supports the modularization effort
that separates common and hardware-specific logic into distinct modules.
Kiran Venkatappa [Tue, 12 Aug 2025 17:09:36 +0000 (22:39 +0530)]
wifi: ath12k: Modularize driver into common and Wi-Fi 7 specific components
Split the ath12k driver into two kernel modules:
- ath12k.ko for shared logic across multiple targets
- ath12k_wifi7.ko for Wi-Fi 7 specific configuration and routines
The common module (ath12k.ko) must be loaded prior to any device-specific
module, as the latter depends on exported symbols from the former.
As part of this restructuring, Wi-Fi 7 specific files are moved into a
dedicated `wifi7/` directory and built as a separate module. Common
symbols are exported accordingly, with further adjustments planned
in upcoming patches to support architecture-dependent separation.
This modularization improves maintainability and scalability by enabling
clean separation of hardware-specific logic from the shared driver core.
Kiran Venkatappa [Tue, 12 Aug 2025 17:09:35 +0000 (22:39 +0530)]
wifi: ath12k: Move hw_init invocation to target-specific probe
Relocate hw_init call from the shared probe path to target-specific
probe implementations. Handle Wi-Fi 7 initialization entirely within
its corresponding target-specific file.
Improve modularity by decoupling hardware-dependent initialization from
common probe logic. Support broader effort to separate shared and
target-specific code paths.
Kiran Venkatappa [Tue, 12 Aug 2025 17:09:34 +0000 (22:39 +0530)]
wifi: ath12k: Move Wi-Fi 7 specific init routines to dedicated file
Move Wi-Fi 7 specific module initialization and exit routines from core.c
to a new core_wifi7.c file. Decouple these routines from common module
entry points to improve modularity.
This restructuring is part of a broader effort to modularize the
ATH12K driver by separating common logic from hardware family-specific
implementations, improving maintainability and scalability.
Kiran Venkatappa [Tue, 12 Aug 2025 17:09:33 +0000 (22:39 +0530)]
wifi: ath12k: Restructure ahb.c into common and Wi-Fi 7 specific modules
Split ahb.c into a common module (ahb.c) and a Wi-Fi 7 specific module
(ahb_wifi7.c). Retain shared logic-such as probe and initialization
sequences-in ahb.c to support reuse across hardware families.
Move Wi-Fi 7 specific initialization and configuration routines to
ahb_wifi7.c and register them via callbacks.
This modular approach improves code organization and prepares the
driver for scalable support of additional hardware families.
Kiran Venkatappa [Tue, 12 Aug 2025 17:09:32 +0000 (22:39 +0530)]
wifi: ath12k: Rename ahb_hif_ops to reflect generic usage
Rename ahb_hif_ops structure to remove the IPQ5322 qualifier and reflect
its generic applicability across multiple targets. Clarify its role as a
container for common HIF callbacks.
This renaming is part of a broader effort to modularize the codebase
by separating common logic from device-specific implementations.
Kiran Venkatappa [Tue, 12 Aug 2025 17:09:31 +0000 (22:39 +0530)]
wifi: ath12k: Rename hw.c to Wi-Fi 7 specific implementation file
Rename hw.c to hw_wifi7.c to reflect its focus on Wi-Fi 7 chipset
specific configurations. Clarify the files role in containing
hardware dependent logic tailored to the Wi-Fi 7 family.
This change is part of a broader effort to modularize the codebase
by separating common and target specific components into distinct
modules for improved clarity and maintainability.
Kiran Venkatappa [Tue, 12 Aug 2025 17:09:30 +0000 (22:39 +0530)]
wifi: ath12k: Move Wi-Fi 7 MHI configuration to dedicated file
Relocate target-specific MHI configuration to a new mhi_wifi7.c file to
isolate Wi-Fi 7 related logic from the common codebase.
Improve modularity by separating hardware-dependent code from shared
components.
Enhance maintainability and prepare the driver for clean integration of
additional device families.
Kiran Venkatappa [Tue, 12 Aug 2025 17:09:29 +0000 (22:39 +0530)]
wifi: ath12k: Move Wi-Fi 7 WMI configuration to dedicated file
Relocate Wi-Fi 7 specific WMI configuration from shared codebase to a new
target-specific file. Isolate WMI settings per target to improve
modularity and maintainability.
This change is part of a broader effort to separate hardware-dependent
logic into standalone modules, paving the way for cleaner support of
multiple hardware families
Kiran Venkatappa [Tue, 12 Aug 2025 17:09:28 +0000 (22:39 +0530)]
wifi: ath12k: Move Copy Engine configuration to Wi-Fi 7 specific file
Relocate Copy Engine (CE) assignment logic from ce.c to a new ce_wifi7.c
file to consolidate Wi-Fi 7 specific CE configuration in one place.
Move CE service map and target configuration from hw.c to ce_wifi7.c.
This reorganization improves code clarity and modularity by isolating
device-specific logic. It is part of a broader effort to separate
common and hardware-specific code into distinct modules.
Kiran Venkatappa [Tue, 12 Aug 2025 17:09:27 +0000 (22:39 +0530)]
wifi: ath12k: Restructure PCI code to common and Wi-Fi 7 specific logic
Refactor pci.c to split common and hardware family specific components.
Retain shared logic such as probe and initialization sequences in common
pci.c to support reuse across device families and move Wi-Fi 7 specific
initialization and configuration to a new pci_wifi7.c file. Register
device specific routines via callbacks to keep the common PCI code
generic and extensible for future hardware families.
This improves maintainability and prepare the codebase for additional
device family support.
- Introduce Strongly Connected Component (SCC) in the verifier to
detect loops and refine register liveness (Eduard Zingerman)
- Allow 'void *' cast using bpf_rdonly_cast() and corresponding
'__arg_untrusted' for global function parameters (Eduard Zingerman)
- Improve precision for BPF_ADD and BPF_SUB operations in the verifier
(Harishankar Vishwanathan)
- Teach the verifier that constant pointer to a map cannot be NULL
(Ihor Solodrai)
- Introduce BPF streams for error reporting of various conditions
detected by BPF runtime (Kumar Kartikeya Dwivedi)
- Teach the verifier to insert runtime speculation barrier (lfence on
x86) to mitigate speculative execution instead of rejecting the
programs (Luis Gerhorst)
- Various improvements for 'veristat' (Mykyta Yatsenko)
- For CONFIG_DEBUG_KERNEL config warn on internal verifier errors to
improve bug detection by syzbot (Paul Chaignon)
- Support BPF private stack on arm64 (Puranjay Mohan)
- Introduce bpf_cgroup_read_xattr() kfunc to read xattr of cgroup's
node (Song Liu)
- Introduce kfuncs for read-only string opreations (Viktor Malik)
- Implement show_fdinfo() for bpf_links (Tao Chen)
- Implement mprog API for cgroup-bpf programs (Yonghong Song)
* tag 'bpf-next-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (192 commits)
selftests/bpf: Migrate fexit_noreturns case into tracing_failure test suite
selftests/bpf: Add selftest for attaching tracing programs to functions in deny list
bpf: Add log for attaching tracing programs to functions in deny list
bpf: Show precise rejected function when attaching fexit/fmod_ret to __noreturn functions
bpf: Fix various typos in verifier.c comments
bpf: Add third round of bounds deduction
selftests/bpf: Test invariants on JSLT crossing sign
selftests/bpf: Test cross-sign 64bits range refinement
selftests/bpf: Update reg_bound range refinement logic
bpf: Improve bounds when s64 crosses sign boundary
bpf: Simplify bounds refinement from s32
selftests/bpf: Enable private stack tests for arm64
bpf, arm64: JIT support for private stack
bpf: Move bpf_jit_get_prog_name() to core.c
bpf, arm64: Fix fp initialization for exception boundary
umd: Remove usermode driver framework
bpf/preload: Don't select USERMODE_DRIVER
selftests/bpf: Fix test dynptr/test_dynptr_memset_xdp_chunks failure
selftests/bpf: Fix test dynptr/test_dynptr_copy_xdp failure
selftests/bpf: Increase xdp data size for arm64 64K page size
...
Merge tag 'net-next-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Core & protocols:
- Wrap datapath globals into net_aligned_data, to avoid false sharing
- Preserve MSG_ZEROCOPY in forwarding (e.g. out of a container)
- Add SO_INQ and SCM_INQ support to AF_UNIX
- Add SIOCINQ support to AF_VSOCK
- Add TCP_MAXSEG sockopt to MPTCP
- Add IPv6 force_forwarding sysctl to enable forwarding per interface
- Make TCP validation of whether packet fully fits in the receive
window and the rcv_buf more strict. With increased use of HW
aggregation a single "packet" can be multiple 100s of kB
- Add MSG_MORE flag to optimize large TCP transmissions via sockmap,
improves latency up to 33% for sockmap users
- Convert TCP send queue handling from tasklet to BH workque
- Improve BPF iteration over TCP sockets to see each socket exactly
once
- Remove obsolete and unused TCP RFC3517/RFC6675 loss recovery code
- Support enabling kernel threads for NAPI processing on per-NAPI
instance basis rather than a whole device. Fully stop the kernel
NAPI thread when threaded NAPI gets disabled. Previously thread
would stick around until ifdown due to tricky synchronization
- Allow multicast routing to take effect on locally-generated packets
- Add output interface argument for End.X in segment routing
- MCTP: add support for gateway routing, improve bind() handling
- Don't require rtnl_lock when fetching an IPv6 neighbor over Netlink
- Add a new neighbor flag ("extern_valid"), which cedes refresh
responsibilities to userspace. This is needed for EVPN multi-homing
where a neighbor entry for a multi-homed host needs to be synced
across all the VTEPs among which the host is multi-homed
- Support NUD_PERMANENT for proxy neighbor entries
- Add a new queuing discipline for IETF RFC9332 DualQ Coupled AQM
- Add sequence numbers to netconsole messages. Unregister
netconsole's console when all net targets are removed. Code
refactoring. Add a number of selftests
- Align IPSec inbound SA lookup to RFC 4301. Only SPI and protocol
should be used for an inbound SA lookup
- Support inspecting ref_tracker state via DebugFS
- Don't force bonding advertisement frames tx to ~333 ms boundaries.
Add broadcast_neighbor option to send ARP/ND on all bonded links
- Allow providing upcall pid for the 'execute' command in openvswitch
- Remove DCCP support from Netfilter's conntrack
- Disallow multiple packet duplications in the queuing layer
- Prevent use of deprecated iptables code on PREEMPT_RT
Driver API:
- Support RSS and hashing configuration over ethtool Netlink
- Add dedicated ethtool callbacks for getting and setting hashing
fields
- Add support for power budget evaluation strategy in PSE /
Power-over-Ethernet. Generate Netlink events for overcurrent etc
- Support DPLL phase offset monitoring across all device inputs.
Support providing clock reference and SYNC over separate DPLL
inputs
- Support traffic classes in devlink rate API for bandwidth
management
- Remove rtnl_lock dependency from UDP tunnel port configuration
Device drivers:
- Add a new Broadcom driver for 800G Ethernet (bnge)
- Add a standalone driver for Microchip ZL3073x DPLL
- Remove IBM's NETIUCV device driver
- Ethernet high-speed NICs:
- Broadcom (bnxt):
- support zero-copy Tx of DMABUF memory
- take page size into account for page pool recycling rings
- Intel (100G, ice, idpf):
- idpf: XDP and AF_XDP support preparations
- idpf: add flow steering
- add link_down_events statistic
- clean up the TSPLL code
- preparations for live VM migration
- nVidia/Mellanox:
- support zero-copy Rx/Tx interfaces (DMABUF and io_uring)
- optimize context memory usage for matchers
- expose serial numbers in devlink info
- support PCIe congestion metrics
- Meta (fbnic):
- add 25G, 50G, and 100G link modes to phylink
- support dumping FW logs
- Marvell/Cavium:
- support for CN20K generation of the Octeon chips
- Amazon:
- add HW clock (without timestamping, just hypervisor time access)
- Ethernet virtual:
- VirtIO net:
- support segmentation of UDP-tunnel-encapsulated packets
- Google (gve):
- support packet timestamping and clock synchronization
- Microsoft vNIC:
- add handler for device-originated servicing events
- allow dynamic MSI-X vector allocation
- support Tx bandwidth clamping
- Ethernet NICs consumer, and embedded:
- AMD:
- amd-xgbe: hardware timestamping and PTP clock support
- Broadcom integrated MACs (bcmgenet, bcmasp):
- use napi_complete_done() return value to support NAPI polling
- add support for re-starting auto-negotiation
- Broadcom switches (b53):
- support BCM5325 switches
- add bcm63xx EPHY power control
- Synopsys (stmmac):
- lots of code refactoring and cleanups
- TI:
- icssg-prueth: read firmware-names from device tree
- icssg: PRP offload support
- Microchip:
- lan78xx: convert to PHYLINK for improved PHY and MAC management
- ksz: add KSZ8463 switch support
- Intel:
- support similar queue priority scheme in multi-queue and
time-sensitive networking (taprio)
- support packet pre-emption in both
- RealTek (r8169):
- enable EEE at 5Gbps on RTL8126
- Airoha:
- add PPPoE offload support
- MDIO bus controller for Airoha AN7583
- Ethernet PHYs:
- support for the IPQ5018 internal GE PHY
- micrel KSZ9477 switch-integrated PHYs:
- add MDI/MDI-X control support
- add RX error counters
- add cable test support
- add Signal Quality Indicator (SQI) reporting
- dp83tg720: improve reset handling and reduce link recovery time
- support bcm54811 (and its MII-Lite interface type)
- air_en8811h: support resume/suspend
- support PHY counters for QCA807x and QCA808x
- support WoL for QCA807x
- CAN drivers:
- rcar_canfd: support for Transceiver Delay Compensation
- kvaser: report FW versions via devlink dev info
- WiFi:
- extended regulatory info support (6 GHz)
- add statistics and beacon monitor for Multi-Link Operation (MLO)
- support S1G aggregation, improve S1G support
- add Radio Measurement action fields
- support per-radio RTS threshold
- some work around how FIPS affects wifi, which was wrong (RC4 is
used by TKIP, not only WEP)
- improvements for unsolicited probe response handling
- WiFi drivers:
- RealTek (rtw88):
- IBSS mode for SDIO devices
- RealTek (rtw89):
- BT coexistence for MLO/WiFi7
- concurrent station + P2P support
- support for USB devices RTL8851BU/RTL8852BU
- Intel (iwlwifi):
- use embedded PNVM in (to be released) FW images to fix
compatibility issues
- many cleanups (unused FW APIs, PCIe code, WoWLAN)
- some FIPS interoperability
- MediaTek (mt76):
- firmware recovery improvements
- more MLO work
- Qualcomm/Atheros (ath12k):
- fix scan on multi-radio devices
- more EHT/Wi-Fi 7 features
- encapsulation/decapsulation offload
- Broadcom (brcm80211):
- support SDIO 43751 device
- Bluetooth:
- hci_event: add support for handling LE BIG Sync Lost event
- ISO: add socket option to report packet seqnum via CMSG
- ISO: support SCM_TIMESTAMPING for ISO TS
- Bluetooth drivers:
- intel_pcie: support Function Level Reset
- nxpuart: add support for 4M baudrate
- nxpuart: implement powerup sequence, reset, FW dump, and FW loading"
* tag 'net-next-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1742 commits)
dpll: zl3073x: Fix build failure
selftests: bpf: fix legacy netfilter options
ipv6: annotate data-races around rt->fib6_nsiblings
ipv6: fix possible infinite loop in fib6_info_uses_dev()
ipv6: prevent infinite loop in rt6_nlmsg_size()
ipv6: add a retry logic in net6_rt_notify()
vrf: Drop existing dst reference in vrf_ip6_input_dst
net/sched: taprio: align entry index attr validation with mqprio
net: fsl_pq_mdio: use dev_err_probe
selftests: rtnetlink.sh: remove esp4_offload after test
vsock: remove unnecessary null check in vsock_getname()
igb: xsk: solve negative overflow of nb_pkts in zerocopy mode
stmmac: xsk: fix negative overflow of budget in zerocopy mode
dt-bindings: ieee802154: Convert at86rf230.txt yaml format
net: dsa: microchip: Disable PTP function of KSZ8463
net: dsa: microchip: Setup fiber ports for KSZ8463
net: dsa: microchip: Write switch MAC address differently for KSZ8463
net: dsa: microchip: Use different registers for KSZ8463
net: dsa: microchip: Add KSZ8463 switch support to KSZ DSA driver
dt-bindings: net: dsa: microchip: Add KSZ8463 switch support
...
Merge tag 'sysctl-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl
Pull sysctl updates from Joel Granados:
- Move sysctls out of the kern_table array
This is the final move of ctl_tables into their respective
subsystems. Only 5 (out of the original 50) will remain in
kernel/sysctl.c file; these handle either sysctl or common arch
variables.
By decentralizing sysctl registrations, subsystem maintainers regain
control over their sysctl interfaces, improving maintainability and
reducing the likelihood of merge conflicts.
- docs: Remove false positives from check-sysctl-docs
Stopped falsely identifying sysctls as undocumented or unimplemented
in the check-sysctl-docs script. This script can now be used to
automatically identify if documentation is missing.
* tag 'sysctl-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl: (23 commits)
docs: Downgrade arm64 & riscv from titles to comment
docs: Replace spaces with tabs in check-sysctl-docs
docs: Remove colon from ctltable title in vm.rst
docs: Add awk section for ucount sysctl entries
docs: Use skiplist when checking sysctl admin-guide
docs: nixify check-sysctl-docs
sysctl: rename kern_table -> sysctl_subsys_table
kernel/sys.c: Move overflow{uid,gid} sysctl into kernel/sys.c
uevent: mv uevent_helper into kobject_uevent.c
sysctl: Removed unused variable
sysctl: Nixify sysctl.sh
sysctl: Remove superfluous includes from kernel/sysctl.c
sysctl: Remove (very) old file changelog
sysctl: Move sysctl_panic_on_stackoverflow to kernel/panic.c
sysctl: move cad_pid into kernel/pid.c
sysctl: Move tainted ctl_table into kernel/panic.c
Input: sysrq: mv sysrq into drivers/tty/sysrq.c
fork: mv threads-max into kernel/fork.c
parisc/power: Move soft-power into power.c
mm: move randomize_va_space into memory.c
...
Merge tag 'hardening-v6.17-rc1-fix1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening fixes from Kees Cook:
"Notably, this contains the fix for for the GCC __init mess I created
with the kstack_erase annotations.
- staging: media: atomisp: Fix stack buffer overflow in
gmin_get_var_int().
I was asked to carry this fix, so here it is. :)
- fortify: Fix incorrect reporting of read buffer size
- kstack_erase: Fix missed export of renamed KSTACK_ERASE_CFLAGS
- compiler_types: Provide __no_kstack_erase to disable coverage only
on Clang"
* tag 'hardening-v6.17-rc1-fix1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
compiler_types: Provide __no_kstack_erase to disable coverage only on Clang
fortify: Fix incorrect reporting of read buffer size
kstack_erase: Fix missed export of renamed KSTACK_ERASE_CFLAGS
staging: media: atomisp: Fix stack buffer overflow in gmin_get_var_int()
Merge tag 'uml-for-linux-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux
Pull uml updates from Johannes Berg:
"Mostly cleanups, except:
- dynamic addition of vfio passthrough devices
- implementation of HAVE_SYSCALL_TRACEPOINTS"
* tag 'uml-for-linux-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux:
um: Replace __ASSEMBLY__ with __ASSEMBLER__ in the usermode headers
um: Stop tracking stub's PID via userspace_pid[]
um: Remove the pid parameter of handle_trap()
um: Use err consistently in userspace()
um: vfio: Support adding devices via mconsole
um: rtc: Avoid shadowing err in uml_rtc_start()
um: Avoid redefining ARCH_HAS_CACHE_LINE_SIZE
um: Make mm_list and mm_list_lock static
um: Make unscheduled_userspace_iterations static
um: Re-evaluate thread flags repeatedly
um: simplify syscall header files
um/ptrace: Implement HAVE_SYSCALL_TRACEPOINTS
um/x86: Add system call table to header file
um: virt-pci: Switch to msi_create_parent_irq_domain()
um: virtio_pcidev: Rename UM_PCI_STAT_WAITING
Merge tag 'powerpc-6.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Madhavan Srinivasan:
- CONFIG_HZ changes to move the base_slice from 10ms to 1ms
- Patchset to move some of the mutex handling to lock guard
- Expose secvars relevant to the key management mode
- Misc cleanups and fixes
Thanks to Ankit Chauhan, Christophe Leroy, Donet Tom, Gautam Menghani,
Haren Myneni, Johan Korsnes, Madadi Vineeth Reddy, Paul Mackerras,
Shrikanth Hegde, Srish Srinivasan, Thomas Fourier, Thomas Huth, Thomas
Weißschuh, Souradeep, Amit Machhiwal, R Nageswara Sastry, Venkat Rao
Bagalkote, Andrew Donnellan, Greg Kroah-Hartman, Mimi Zohar, Mukesh
Kumar Chaurasiya, Nayna Jain, Ritesh Harjani (IBM), Sourabh Jain, Srikar
Dronamraju, Stefan Berger, Tyrel Datwyler, and Kowshik Jois.
* tag 'powerpc-6.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (23 commits)
arch/powerpc: Remove .interp section in vmlinux
powerpc: Drop GPL boilerplate text with obsolete FSF address
powerpc: Don't use %pK through printk
arch: powerpc: defconfig: Drop obsolete CONFIG_NET_CLS_TCINDEX
misc: ocxl: Replace scnprintf() with sysfs_emit() in sysfs show functions
integrity/platform_certs: Allow loading of keys in the static key management mode
powerpc/secvar: Expose secvars relevant to the key management mode
powerpc/pseries: Correct secvar format representation for static key management
(powerpc/512) Fix possible `dma_unmap_single()` on uninitialized pointer
powerpc: floppy: Add missing checks after DMA map
book3s64/radix : Optimize vmemmap start alignment
book3s64/radix : Handle error conditions properly in radix_vmemmap_populate
powerpc/pseries/dlpar: Search DRC index from ibm,drc-indexes for IO add
KVM: PPC: Book3S HV: Add H_VIRT mapping for tracing exits
powerpc: sysdev: use lock guard for mutex
powerpc: powernv: ocxl: use lock guard for mutex
powerpc: book3s: vas: use lock guard for mutex
powerpc: fadump: use lock guard for mutex
powerpc: rtas: use lock guard for mutex
powerpc: eeh: use lock guard for mutex
...
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
"A quick summary: perf support for Branch Record Buffer Extensions
(BRBE), typical PMU hardware updates, small additions to MTE for
store-only tag checking and exposing non-address bits to signal
handlers, HAVE_LIVEPATCH enabled on arm64, VMAP_STACK forced on.
There is also a TLBI optimisation on hardware that does not require
break-before-make when changing the user PTEs between contiguous and
non-contiguous.
More details:
Perf and PMU updates:
- Add support for new (v3) Hisilicon SLLC and DDRC PMUs
- Add support for Arm-NI PMU integrations that share interrupts
between clock domains within a given instance
- Allow SPE to be configured with a lower sample period than the
minimum recommendation advertised by PMSIDR_EL1.Interval
- Add suppport for Arm's "Branch Record Buffer Extension" (BRBE)
- Adjust the perf watchdog period according to cpu frequency changes
- Minor driver fixes and cleanups
Hardware features:
- Support for MTE store-only checking (FEAT_MTE_STORE_ONLY)
- Support for reporting the non-address bits during a synchronous MTE
tag check fault (FEAT_MTE_TAGGED_FAR)
- Optimise the TLBI when folding/unfolding contiguous PTEs on
hardware with FEAT_BBM (break-before-make) level 2 and no TLB
conflict aborts
Software features:
- Enable HAVE_LIVEPATCH after implementing arch_stack_walk_reliable()
and using the text-poke API for late module relocations
- Force VMAP_STACK always on and change arm64_efi_rt_init() to use
arch_alloc_vmap_stack() in order to avoid KASAN false positives
ACPI:
- Improve SPCR handling and messaging on systems lacking an SPCR
table
Debug:
- Simplify the debug exception entry path
- Drop redundant DBG_MDSCR_* macros
Kselftests:
- Cleanups and improvements for SME, SVE and FPSIMD tests
Miscellaneous:
- Optimise loop to reduce redundant operations in contpte_ptep_get()
- Remove ISB when resetting POR_EL0 during signal handling
- Mark the kernel as tainted on SEA and SError panic
- Remove redundant gcs_free() call"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (93 commits)
arm64/gcs: task_gcs_el0_enable() should use passed task
arm64: Kconfig: Keep selects somewhat alphabetically ordered
arm64: signal: Remove ISB when resetting POR_EL0
kselftest/arm64: Handle attempts to disable SM on SME only systems
kselftest/arm64: Fix SVE write data generation for SME only systems
kselftest/arm64: Test SME on SME only systems in fp-ptrace
kselftest/arm64: Test FPSIMD format data writes via NT_ARM_SVE in fp-ptrace
kselftest/arm64: Allow sve-ptrace to run on SME only systems
arm64/mm: Drop redundant addr increment in set_huge_pte_at()
kselftest/arm4: Provide local defines for AT_HWCAP3
arm64: Mark kernel as tainted on SAE and SError panic
arm64/gcs: Don't call gcs_free() when releasing task_struct
drivers/perf: hisi: Support PMUs with no interrupt
drivers/perf: hisi: Relax the event number check of v2 PMUs
drivers/perf: hisi: Add support for HiSilicon SLLC v3 PMU driver
drivers/perf: hisi: Use ACPI driver_data to retrieve SLLC PMU information
drivers/perf: hisi: Add support for HiSilicon DDRC v3 PMU driver
drivers/perf: hisi: Simplify the probe process for each DDRC version
perf/arm-ni: Support sharing IRQs within an NI instance
perf/arm-ni: Consolidate CPU affinity handling
...
Merge tag 'm68k-for-v6.17-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k updates from Geert Uytterhoeven:
- ptdescs conversions
- Fix lost column on the graphical debug console
- Replace __ASSEMBLY__ with __ASSEMBLER__ in headers
- Miscellaneous fixes and improvements
- defconfig updates
* tag 'm68k-for-v6.17-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k: mac: Improve clocksource driver commentary
m68k: defconfig: Update defconfigs for v6.16-rc2
m68k: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-uapi headers
m68k: Replace __ASSEMBLY__ with __ASSEMBLER__ in uapi headers
m68k: Enable dead code elimination
m68k: Don't unregister boot console needlessly
m68k: Remove unused "cursor home" code from debug console
m68k: Avoid pointless recursion in debug console rendering
m68k: Fix lost column on framebuffer debug console
m68k: mm: Convert pointer table macros to use ptdescs
m68k: mm: Convert init_pointer_table() to use ptdescs
m68k: mm: Convert free_pointer_table() to use ptdescs
m68k: mm: Convert get_pointer_table() to use ptdescs
Merge tag 's390-6.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Alexander Gordeev:
- Standardize on the __ASSEMBLER__ macro that is provided by GCC and
Clang compilers and replace __ASSEMBLY__ with __ASSEMBLER__ in both
uapi and non-uapi headers
- Explicitly include <linux/export.h> in architecture and driver files
which contain an EXPORT_SYMBOL() and remove the include from the
files which do not contain the EXPORT_SYMBOL()
- Use the full title of "z/Architecture Principles of Operation" manual
and the name of a section where facility bits are listed
- Use -D__DISABLE_EXPORTS for files in arch/s390/boot to avoid
unnecessary slowing down of the build and confusing external kABI
tools that process symtypes data
- Print additional unrecoverable machine check information to make the
root cause analysis easier
- Move cmpxchg_user_key() handling to uaccess library code, since the
generated code is large anyway and there is no benefit if it is
inlined
- Fix a problem when cmpxchg_user_key() is executing a code with a
non-default key: if a system is IPL-ed with "LOAD NORMAL", and the
previous system used storage keys where the fetch-protection bit was
set for some pages, and the cmpxchg_user_key() is located within such
page, a protection exception happens
- Either the external call or emergency signal order is used to send an
IPI to a remote CPU. Use the external order only, since it is at
least as good and sometimes even better, than the emergency signal
- In case of an early crash the early program check handler prints more
or less random value of the last breaking event address, since it is
not initialized properly. Copy the last breaking event address from
the lowcore to pt_regs to address this
- During STP synchronization check udelay() can not be used, since the
first CPU modifies tod_clock_base and get_tod_clock_monotonic() might
return a non-monotonic time. Instead, busy-loop on other CPUs, while
the the first CPU actually handles the synchronization operation
- When debugging the early kernel boot using QEMU with the -S flag and
GDB attached, skip the decompressor and start directly in kernel
- Rename PAI Crypto event 4210 according to z16 and z17 "z/Architecture
Principles of Operation" manual
- Remove the in-kernel time steering support in favour of the new s390
PTP driver, which allows the kernel clock steered more precisely
- Remove a possible false-positive warning in pte_free_defer(), which
could be triggered in a valid case KVM guest process is initializing
* tag 's390-6.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (29 commits)
s390/mm: Remove possible false-positive warning in pte_free_defer()
s390/stp: Default to enabled
s390/stp: Remove leap second support
s390/time: Remove in-kernel time steering
s390/sclp: Use monotonic clock in sclp_sync_wait()
s390/smp: Use monotonic clock in smp_emergency_stop()
s390/time: Use monotonic clock in get_cycles()
s390/pai_crypto: Rename PAI Crypto event 4210
scripts/gdb/symbols: make lx-symbols skip the s390 decompressor
s390/boot: Introduce jump_to_kernel() function
s390/stp: Remove udelay from stp_sync_clock()
s390/early: Copy last breaking event address to pt_regs
s390/smp: Remove conditional emergency signal order code usage
s390/uaccess: Merge cmpxchg_user_key() inline assemblies
s390/uaccess: Prevent kprobes on cmpxchg_user_key() functions
s390/uaccess: Initialize code pages executed with non-default access key
s390/skey: Provide infrastructure for executing with non-default access key
s390/uaccess: Make cmpxchg_user_key() library code
s390/page: Add memory clobber to page_set_storage_key()
s390/page: Cleanup page_set_storage_key() inline assemblies
...
Merge tag 'x86-platform-2025-07-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 platform updates from Ingo Molnar:
"This adds support for the AMD hardware feedback interface (HFI), by
Perry Yuan"
* tag 'x86-platform-2025-07-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/itmt: Add debugfs file to show core priorities
platform/x86/amd: hfi: Add debugfs support
platform/x86/amd: hfi: Set ITMT priority from ranking data
cpufreq/amd-pstate: Disable preferred cores on designs with workload classification
x86/process: Clear hardware feedback history for AMD processors
platform/x86: hfi: Add power management callback
platform/x86: hfi: Add online and offline callback support
platform/x86: hfi: Init per-cpu scores for each class
platform/x86: hfi: Parse CPU core ranking data from shared memory
platform/x86: hfi: Introduce AMD Hardware Feedback Interface Driver
x86/msr-index: Add AMD workload classification MSRs
MAINTAINERS: Add maintainer entry for AMD Hardware Feedback Driver
Documentation/x86: Add AMD Hardware Feedback Interface documentation
Merge tag 'x86-fpu-2025-07-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 FPU updates from Ingo Molnar:
- Most of the changes are related to the implementation of CET
supervisor state support for guests, and its preparatory changes
(Chao Gao)
- Improve/fix the debug output for unexpected FPU exceptions (Dave
Hansen)
* tag 'x86-fpu-2025-07-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/fpu: Delay instruction pointer fixup until after warning
x86/fpu/xstate: Add CET supervisor xfeature support as a guest-only feature
x86/fpu/xstate: Introduce "guest-only" supervisor xfeature set
x86/fpu: Remove xfd argument from __fpstate_reset()
x86/fpu: Initialize guest fpstate and FPU pseudo container from guest defaults
x86/fpu: Initialize guest FPU permissions from guest defaults
x86/fpu/xstate: Differentiate default features for host and guest FPUs
Merge tag 'x86-boot-2025-07-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 boot updates from Ingo Molnar:
- Implement support for embedding EFI SBAT data (Secure Boot Advanced
Targeting: a secure boot image revocation facility) on x86 (Vitaly
Kuznetsov)
- Move the efi_enter_virtual_mode() initialization call from the
generic init code to x86 init code (Alexander Shishkin)
* tag 'x86-boot-2025-07-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/efi: Implement support for embedding SBAT data for x86
x86/efi: Move runtime service initialization to arch/x86
Merge tag 'locking-core-2025-07-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
"Locking primitives:
- Mark devm_mutex_init() as __must_check and fix drivers that didn't
check the return code (Thomas Weißschuh)
- Reorganize <linux/local_lock.h> to better expose the internal APIs
to local variables (Sebastian Andrzej Siewior)
- Remove OWNER_SPINNABLE in rwsem (Jinliang Zheng)
- Remove redundant #ifdefs in the mutex code (Ran Xiaokai)
Lockdep:
- Avoid returning struct in lock_stats() (Arnd Bergmann)
- Change `static const` into enum for LOCKF_*_IRQ_* (Arnd Bergmann)
- Temporarily use synchronize_rcu_expedited() in
lockdep_unregister_key() to speed things up. (Breno Leitao)
Rust runtime:
- Add #[must_use] to Lock::try_lock() (Jason Devers)"
* tag 'locking-core-2025-07-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
lockdep: Speed up lockdep_unregister_key() with expedited RCU synchronization
locking/mutex: Remove redundant #ifdefs
locking/lockdep: Change 'static const' variables to enum values
locking/lockdep: Avoid struct return in lock_stats()
locking/rwsem: Use OWNER_NONSPINNABLE directly instead of OWNER_SPINNABLE
rust: sync: Add #[must_use] to Lock::try_lock()
locking/mutex: Mark devm_mutex_init() as __must_check
leds: lp8860: Check return value of devm_mutex_init()
spi: spi-nxp-fspi: Check return value of devm_mutex_init()
local_lock: Move this_cpu_ptr() notation from internal to main header
Merge tag 'perf-core-2025-07-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 performance events updates from Ingo Molnar:
"Intel uncore driver enhancements (Kan Liang):
- Support MSR portal for discovery tables
- Support customized MMIO map size
- Add Panther Lake support
- Add IMC freerunning support for Panther Lake"
* tag 'perf-core-2025-07-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel/uncore: Add iMC freerunning for Panther Lake
perf/x86/intel/uncore: Add Panther Lake support
perf/x86/intel/uncore: Support customized MMIO map size
perf/x86/intel/uncore: Support MSR portal for discovery tables
Merge tag 'sched-core-2025-07-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"Core scheduler changes:
- Better tracking of maximum lag of tasks in presence of different
slices duration, for better handling of lag in the fair scheduler
(Vincent Guittot)
- Clean up and standardize #if/#else/#endif markers throughout the
entire scheduler code base (Ingo Molnar)
- Make SMP unconditional: build the SMP scheduler's data structures
and logic on UP kernel too, even though they are not used, to
simplify the scheduler and remove around 200 #ifdef/[#else]/#endif
blocks from the scheduler (Ingo Molnar)
- Reorganize cgroup bandwidth control interface handling for better
interfacing with sched_ext (Tejun Heo)
Balancing:
- Bump sd->max_newidle_lb_cost when newidle balance fails (Chris
Mason)
- Remove sched_domain_topology_level::flags to simplify the code
(Prateek Nayak)
- Simplify and clean up build_sched_topology() (Li Chen)
- Optimize build_sched_topology() on large machines (Li Chen)
Real-time scheduling:
- Add initial version of proxy execution: a mechanism for
mutex-owning tasks to inherit the scheduling context of higher
priority waiters.
Currently limited to a single runqueue and conditional on
CONFIG_EXPERT, and other limitations (John Stultz, Peter Zijlstra,
Valentin Schneider)
- Deadline scheduler (Juri Lelli):
- Fix dl_servers initialization order (Juri Lelli)
- Fix DL scheduler's root domain reinitialization logic (Juri
Lelli)
- Fix accounting bugs after global limits change (Juri Lelli)
- Fix scalability regression by implementing less agressive
dl_server handling (Peter Zijlstra)
PSI:
- Improve scalability by optimizing psi_group_change() cpu_clock()
usage (Peter Zijlstra)
Rust changes:
- Make Task, CondVar and PollCondVar methods inline to avoid
unnecessary function calls (Kunwu Chan, Panagiotis Foliadis)
- Add might_sleep() support for Rust code: Rust's "#[track_caller]"
mechanism is used so that Rust's might_sleep() doesn't need to be
defined as a macro (Fujita Tomonori)
- Introduce file_from_location() (Boqun Feng)
Debugging & instrumentation:
- Make clangd usable with scheduler source code files again (Peter
Zijlstra)
- tools: Add root_domains_dump.py which dumps root domains info (Juri
Lelli)
- tools: Add dl_bw_dump.py for printing bandwidth accounting info
(Juri Lelli)
Misc cleanups & fixes:
- Remove play_idle() (Feng Lee)
- Fix check_preemption_disabled() (Sebastian Andrzej Siewior)
- Do not call __put_task_struct() on RT if pi_blocked_on is set (Luis
Claudio R. Goncalves)
- Correct the comment in place_entity() (wang wei)"
* tag 'sched-core-2025-07-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (84 commits)
sched/idle: Remove play_idle()
sched: Do not call __put_task_struct() on rt if pi_blocked_on is set
sched: Start blocked_on chain processing in find_proxy_task()
sched: Fix proxy/current (push,pull)ability
sched: Add an initial sketch of the find_proxy_task() function
sched: Fix runtime accounting w/ split exec & sched contexts
sched: Move update_curr_task logic into update_curr_se
locking/mutex: Add p->blocked_on wrappers for correctness checks
locking/mutex: Rework task_struct::blocked_on
sched: Add CONFIG_SCHED_PROXY_EXEC & boot argument to enable/disable
sched/topology: Remove sched_domain_topology_level::flags
x86/smpboot: avoid SMT domain attach/destroy if SMT is not enabled
x86/smpboot: moves x86_topology to static initialize and truncate
x86/smpboot: remove redundant CONFIG_SCHED_SMT
smpboot: introduce SDTL_INIT() helper to tidy sched topology setup
tools/sched: Add dl_bw_dump.py for printing bandwidth accounting info
tools/sched: Add root_domains_dump.py which dumps root domains info
sched/deadline: Fix accounting after global limits change
sched/deadline: Reset extra_bw to max_bw when clearing root domains
sched/deadline: Initialize dl_servers after SMP
...
compiler_types: Provide __no_kstack_erase to disable coverage only on Clang
In order to support Clang's stack depth tracking (for Linux's kstack_erase
feature), the coverage sanitizer needed to be disabled for __init (and
__head) section code. Doing this universally (i.e. for GCC too) created
a number of unexpected problems, ranging from changes to inlining logic
to failures to DCE code on earlier GCC versions.
Since this change is only needed for Clang, specialize it so that GCC
doesn't see the change as it isn't needed there (the GCC implementation
of kstack_erase uses a GCC plugin that removes stack depth tracking
instrumentation from __init sections during a late pass in the IR).
Successfully build and boot tested with GCC 12 and Clang 22.
Fixes: 381a38ea53d2 ("init.h: Disable sanitizer coverage for __init and __head") Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202507270258.neWuiXLd-lkp@intel.com/ Reported-by: syzbot+5245cb609175fb6e8122@syzkaller.appspotmail.com Closes: https://lore.kernel.org/all/6888d004.a00a0220.26d0e1.0004.GAE@google.com/ Reviewed-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Marco Elver <elver@google.com> Link: https://lore.kernel.org/r/20250729234055.it.233-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org>
fortify: Fix incorrect reporting of read buffer size
When FORTIFY_SOURCE reports about a run-time buffer overread, the wrong
buffer size was being shown in the error message. (The bounds checking
was correct.)
projects / thirdparty / kernel / linux.git / log
