Since recently in the commit e469e2045f ("ALSA: memalloc: Let IOMMU
handle S/G primarily"), the SG buffer allocation code was modified to
use the standard DMA code primarily and the fallback is applied only
limitedly. This made the Xen PV specific workarounds we took in the
commit 53466ebdec ("ALSA: memalloc: Workaround for Xen PV") rather
superfluous.
It was a hackish workaround for the regression at that time, and it
seems that it's causing another issues (reportedly memory
corruptions). So it's better to clean it up, after all.
Link: https://lore.kernel.org/20240906184209.25423-1-ariadne@ariadne.space
Cc: Ariadne Conill <ariadne@ariadne.space>
Link: https://patch.msgid.link/20240910113100.32542-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The CM9825 is a High Definition Audio Codec.
There are 2 independent stereo outputs, one of the stereo
outputs is cap-less with HP AMP, and the other is line out to
connect the active speaker. The inputs can be Line-in and MIC-in.
Signed-off-by: Leo Tsai <antivirus621@gmail.com>
Link: https://patch.msgid.link/20240910065542.6534-1-antivirus621@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Probing xen-fbfront faults in video_is_primary_device(). The passed-in
struct device is NULL since xen-fbfront doesn't assign it and the
memory is kzalloc()-ed. Assign fb_info->device to avoid this.
This was exposed by the conversion of fb_is_primary_device() to
video_is_primary_device() which dropped a NULL check for struct device.
Fixes: f178e96de7 ("arch: Remove struct fb_info from video helpers")
Reported-by: Arthur Borsboom <arthurborsboom@gmail.com>
Closes: https://lore.kernel.org/xen-devel/CALUcmUncX=LkXWeiSiTKsDY-cOe8QksWhFvcCneOKfrKd0ZajA@mail.gmail.com/
Tested-by: Arthur Borsboom <arthurborsboom@gmail.com>
CC: stable@vger.kernel.org
Signed-off-by: Jason Andryuk <jason.andryuk@amd.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Helge Deller <deller@gmx.de>
The icache will be flushed in switch_to() if force_icache_flush is true,
or in flush_icache_deferred() if icache_stale_mask is set. Between
setting force_icache_flush to false and calculating the new
icache_stale_mask, preemption needs to be disabled. There are two
reasons for this:
1. If CPU migration happens between force_icache_flush = false, and the
icache_stale_mask is set, an icache flush will not be emitted.
2. smp_processor_id() is used in set_icache_stale_mask() to mark the
current CPU as not needing another flush since a flush will have
happened either by userspace or by the kernel when performing the
migration. smp_processor_id() is currently called twice with preemption
enabled which causes a race condition. It allows
icache_stale_mask to be populated with inconsistent CPU ids.
Resolve these two issues by setting the icache_stale_mask before setting
force_icache_flush to false, and using get_cpu()/put_cpu() to obtain the
smp_processor_id().
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Fixes: 6b9391b581 ("riscv: Include riscv_set_icache_flush_ctx prctl")
Link: https://lore.kernel.org/r/20240903-fix_fencei_optimization-v2-1-8025f20171fc@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
syzbot reports a f2fs bug as below:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 58 at kernel/rcu/sync.c:177 rcu_sync_dtor+0xcd/0x180 kernel/rcu/sync.c:177
CPU: 1 UID: 0 PID: 58 Comm: kworker/1:2 Not tainted 6.10.0-syzkaller-12562-g1722389b0d86 #0
Workqueue: events destroy_super_work
RIP: 0010:rcu_sync_dtor+0xcd/0x180 kernel/rcu/sync.c:177
Call Trace:
percpu_free_rwsem+0x41/0x80 kernel/locking/percpu-rwsem.c:42
destroy_super_work+0xec/0x130 fs/super.c:282
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
As Christian Brauner pointed out [1]: the root cause is f2fs sets
SB_RDONLY flag in internal function, rather than setting the flag
covered w/ sb->s_umount semaphore via remount procedure, then below
race condition causes this bug:
- freeze_super()
- sb_wait_write(sb, SB_FREEZE_WRITE)
- sb_wait_write(sb, SB_FREEZE_PAGEFAULT)
- sb_wait_write(sb, SB_FREEZE_FS)
- f2fs_handle_critical_error
- sb->s_flags |= SB_RDONLY
- thaw_super
- thaw_super_locked
- sb_rdonly() is true, so it skips
sb_freeze_unlock(sb, SB_FREEZE_FS)
- deactivate_locked_super
Since f2fs has almost the same logic as ext4 [2] when handling critical
error in filesystem if it mounts w/ errors=remount-ro option:
- set CP_ERROR_FLAG flag which indicates filesystem is stopped
- record errors to superblock
- set SB_RDONLY falg
Once we set CP_ERROR_FLAG flag, all writable interfaces can detect the
flag and stop any further updates on filesystem. So, it is safe to not
set SB_RDONLY flag, let's remove the logic and keep in line w/ ext4 [3].
[1] https://lore.kernel.org/all/20240729-himbeeren-funknetz-96e62f9c7aee@brauner
[2] https://lore.kernel.org/all/20240729132721.hxih6ehigadqf7wx@quack3
[3] https://lore.kernel.org/linux-ext4/20240805201241.27286-1-jack@suse.cz
Fixes: b62e71be21 ("f2fs: support errors=remount-ro|continue|panic mountoption")
Reported-by: syzbot+20d7e439f76bbbd863a7@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/all/000000000000b90a8e061e21d12f@google.com/
Cc: Jan Kara <jack@suse.cz>
Cc: Christian Brauner <brauner@kernel.org>
Signed-off-by: Chao Yu <chao@kernel.org>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
We need to introduce a valid block ratio threshold not to trigger
excessive GC for zoned deivces. The initial value of it is 95%. So, F2FS
will stop the thread from intiating GC for sections having valid blocks
exceeding the ratio.
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Added control knobs for gc_no_zoned_gc_percent and
gc_boost_zoned_gc_percent.
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Under low free section count, we need to use FG_GC instead of BG_GC to
recover free sections.
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
For the fine tuning of GC behavior, add reserved_segments sysfs node.
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
We can control the scanning window granularity for GC migration. For
more frequent scanning and GC on zoned devices, we need a fine grained
control knob for it.
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Since we don't have any GC on device side for zoned devices, need more
aggressive BG GC. So, tune the parameters for that.
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This patch addresses the problem that when using LFS mode, unused blocks
may occur in f2fs_map_blocks() during block allocation for dio writes.
If a new section is allocated during block allocation, it will not be
included in the map struct by map_is_mergeable() if the LBA of the
allocated block is not contiguous. However, the block already allocated
in this process will remain unused due to the LFS mode.
This patch avoids the possibility of unused blocks by escaping
f2fs_map_blocks() when allocating the last block in a section.
Signed-off-by: Daejun Park <daejun7.park@samsung.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Some f2fs ioctl interfaces like f2fs_ioc_set_pin_file(),
f2fs_move_file_range(), and f2fs_defragment_range() missed to
check atomic_write status, which may cause potential race issue,
fix it.
Cc: stable@vger.kernel.org
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
syzbot reports a f2fs bug as below:
kernel BUG at fs/f2fs/inode.c:896!
RIP: 0010:f2fs_evict_inode+0x1598/0x15c0 fs/f2fs/inode.c:896
Call Trace:
evict+0x532/0x950 fs/inode.c:704
dispose_list fs/inode.c:747 [inline]
evict_inodes+0x5f9/0x690 fs/inode.c:797
generic_shutdown_super+0x9d/0x2d0 fs/super.c:627
kill_block_super+0x44/0x90 fs/super.c:1696
kill_f2fs_super+0x344/0x690 fs/f2fs/super.c:4898
deactivate_locked_super+0xc4/0x130 fs/super.c:473
cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373
task_work_run+0x24f/0x310 kernel/task_work.c:228
ptrace_notify+0x2d2/0x380 kernel/signal.c:2402
ptrace_report_syscall include/linux/ptrace.h:415 [inline]
ptrace_report_syscall_exit include/linux/ptrace.h:477 [inline]
syscall_exit_work+0xc6/0x190 kernel/entry/common.c:173
syscall_exit_to_user_mode_prepare kernel/entry/common.c:200 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:205 [inline]
syscall_exit_to_user_mode+0x279/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0010:f2fs_evict_inode+0x1598/0x15c0 fs/f2fs/inode.c:896
Online repaire on corrupted directory in f2fs_lookup() can generate
dirty data/meta while racing w/ readonly remount, it may leave dirty
inode after filesystem becomes readonly, however, checkpoint() will
skips flushing dirty inode in a state of readonly mode, result in
above panic.
Let's get rid of online repaire in f2fs_lookup(), and leave the work
to fsck.f2fs.
Fixes: 510022a858 ("f2fs: add F2FS_INLINE_DOTS to recover missing dot dentries")
Reported-by: syzbot+ebea2790904673d7c618@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/all/000000000000a7b20f061ff2d56a@google.com
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Keep atomic file clean while updating and make it dirtied during commit
in order to avoid unnecessary and excessive inode updates in the previous
fix.
Fixes: 4bf7832234 ("f2fs: mark inode dirty for FI_ATOMIC_COMMITTED flag")
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
As reported in [1], the use of smp_processor_id() in
pmu_sbi_device_probe() must be protected by disabling the preemption, so
simple use get_cpu()/put_cpu() instead.
Reported-by: Nam Cao <namcao@linutronix.de>
Closes: https://lore.kernel.org/linux-riscv/20240820074925.ReMKUPP3@linutronix.de/ [1]
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Tested-by: Nam Cao <namcao@linutronix.de>
Fixes: a8625217a0 ("drivers/perf: riscv: Implement SBI PMU snapshot function")
Reported-by: Andrea Parri <parri.andrea@gmail.com>
Tested-by: Andrea Parri <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/20240826165210.124696-1-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
- Drop stale exynos file pattern from MAINTAINERS file
The old "exynos" directory is removed from MAINTAINERS as Samsung Exynos display bindings have been relocated. This resolves a warning from get_maintainers.pl about no files matching the outdated directory.
- Constify struct exynos_drm_ipp_funcs
By making struct exynos_drm_ipp_funcs constant, the patch enhances security by moving the structure to a read-only section of memory. This change results in a slight reduction in the data section size.
- Remove unnecessary code
The function exynos_atomic_commit is removed as it became redundant after a previous update. This cleans up the code and eliminates unused function declarations.
One fixup
- Fix wrong assignment in gsc_bind()
A double assignment in gsc_bind() was flagged by the cocci tool and corrected to fix an incorrect assignment, addressing a potential issue introduced in a prior commit.
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Merge tag 'exynos-drm-next-for-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next
Three cleanups
- Drop stale exynos file pattern from MAINTAINERS file
The old "exynos" directory is removed from MAINTAINERS as Samsung Exynos display bindings have been relocated. This resolves a warning from get_maintainers.pl about no files matching the outdated directory.
- Constify struct exynos_drm_ipp_funcs
By making struct exynos_drm_ipp_funcs constant, the patch enhances security by moving the structure to a read-only section of memory. This change results in a slight reduction in the data section size.
- Remove unnecessary code
The function exynos_atomic_commit is removed as it became redundant after a previous update. This cleans up the code and eliminates unused function declarations.
One fixup
- Fix wrong assignment in gsc_bind()
A double assignment in gsc_bind() was flagged by the cocci tool and corrected to fix an incorrect assignment, addressing a potential issue introduced in a prior commit.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Inki Dae <inki.dae@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240909004641.406858-1-inki.dae@samsung.com
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2024-09-09 (ice, igb)
This series contains updates to ice and igb drivers.
Martyna moves LLDP rule removal to the proper uninitialization function
for ice.
Jake corrects accounting logic for FWD_TO_VSI_LIST switch filters on
ice.
Przemek removes incorrect, explicit calls to pci_disable_device() for
ice.
Michal Schmidt stops incorrect use of VSI list for VLAN use on ice.
Sriram Yagnaraman adjusts igb_xdp_ring_update_tail() to be called under
Tx lock on igb.
* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
igb: Always call igb_xdp_ring_update_tail() under Tx lock
ice: fix VSI lists confusion when adding VLANs
ice: stop calling pci_disable_device() as we use pcim
ice: fix accounting for filters shared by multiple VSIs
ice: Fix lldp packets dropping after changing the number of channels
====================
Link: https://patch.msgid.link/20240909203842.3109822-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'mlx5-fixes-2024-09-09' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux
Saeed Mahameed says:
====================
mlx5 fixes 2024-09-09
This series provides bug fixes to mlx5 driver.
* tag 'mlx5-fixes-2024-09-09' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux:
net/mlx5: Fix bridge mode operations when there are no VFs
net/mlx5: Verify support for scheduling element and TSAR type
net/mlx5: Add missing masks and QoS bit masks for scheduling elements
net/mlx5: Explicitly set scheduling element and TSAR type
net/mlx5e: Add missing link mode to ptys2ext_ethtool_map
net/mlx5e: Add missing link modes to ptys2ethtool_map
net/mlx5: Update the list of the PCI supported devices
====================
Link: https://patch.msgid.link/20240909194505.69715-1-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Tony Nguyen says:
====================
ice: support devlink subfunction
Michal Swiatkowski says:
Currently ice driver does not allow creating more than one networking
device per physical function. The only way to have more hardware backed
netdev is to use SR-IOV.
Following patchset adds support for devlink port API. For each new
pcisf type port, driver allocates new VSI, configures all resources
needed, including dynamically MSIX vectors, program rules and registers
new netdev.
This series supports only one Tx/Rx queue pair per subfunction.
Example commands:
devlink port add pci/0000:31:00.1 flavour pcisf pfnum 1 sfnum 1000
devlink port function set pci/0000:31:00.1/1 hw_addr 00:00:00:00:03:14
devlink port function set pci/0000:31:00.1/1 state active
devlink port function del pci/0000:31:00.1/1
Make the port representor and eswitch code generic to support
subfunction representor type.
VSI configuration is slightly different between VF and SF. It needs to
be reflected in the code.
* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue:
ice: subfunction activation and base devlink ops
ice: basic support for VLAN in subfunctions
ice: support subfunction devlink Tx topology
ice: implement netdevice ops for SF representor
ice: check if SF is ready in ethtool ops
ice: don't set target VSI for subfunction
ice: create port representor for SF
ice: make representor code generic
ice: implement netdev for subfunction
ice: base subfunction aux driver
ice: allocate devlink for subfunction
ice: treat subfunction VSI the same as PF VSI
ice: add basic devlink subfunctions support
ice: export ice ndo_ops functions
ice: add new VSI type for subfunctions
====================
Link: https://patch.msgid.link/20240906223010.2194591-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
HW-Managed Flow Steering in mlx5 driver
Yevgeny Kliteynik says:
=======================
1. Overview
-----------
ConnectX devices support packet matching, modification, and redirection.
This functionality is referred as Flow Steering.
To configure a steering rule, the rule is written to the device-owned
memory. This memory is accessed and cached by the device when processing
a packet.
The first implementation of Flow Steering was done in FW, and it is
referred in the mlx5 driver as Device-Managed Flow Steering (DMFS).
Later we introduced SW-managed Flow Steering (SWS or SMFS), where the
driver is writing directly to the device's configuration memory (ICM)
through RC QP using RDMA operations (RDMA-read and RDAM-write), thus
achieving higher rates of rule insertion/deletion.
Now we introduce a new flow steering implementation: HW-Managed Flow
Steering (HWS or HMFS).
In this new approach, the driver is configuring steering rules directly
to the HW using the WQs with a special new type of WQE. This way we can
reach higher rule insertion/deletion rate with much lower CPU utilization
compared to SWS.
The key benefits of HWS as opposed to SWS:
+ HW manages the steering decision tree
- HW calculates CRC for each entry
- HW handles tree hash collisions
- HW & FW manage objects refcount
+ HW keeps cache coherency:
- HW provides tree access locking and synchronization
- HW provides notification on completion
+ Insertion rate isn’t affected by background traffic
- Dedicated HW components that handle insertion
2. Performance
--------------
Measuring Connection Tracking with simple IPv4 flows w/o NAT, we
are able to get ~5 times more flows offloaded per second using HWS.
3. Configuration
----------------
The enablement of HWS mode in eswitch manager is done using the same
devlink param that is already used for switching between FW-managed
steering and SW-managed steering modes:
# devlink dev param set pci/<PCI_ID> name flow_steering_mode cmod runtime value hmfs
4. Upstream Submission
----------------------
HWS support consists of 3 main components:
+ Steering:
- The lower layer that exposes HWS API to upper layers and implements
all the management of flow steering building blocks
+ FS-Core
- Implementation of fs_hws layer to enable fs_core to use HWS instead
of FW or SW steering
- Create HW steering action pools to utilize the ability of HWS to
share steering actions among different rules
- Add support for configuring HWS mode through devlink command,
similar to configuring SWS mode
+ Connection Tracking
- Implementation of CT support for HW steering
- Hooks up the CT ops for the new steering mode and uses the HWS API
to implement connection tracking.
Because of the large number of patches, we need to perform the submission
in several separate patch series. This series is the first submission that
lays the ground work for the next submissions, where an actual user of HWS
will be added.
5. Patches in this series
-------------------------
This patch series contains implementation of the first bullet from above.
The patches are:
[patch 01/15] net/mlx5: Added missing mlx5_ifc definition for HW Steering
[patch 02/15] net/mlx5: Added missing definitions in preparation for HW Steering
[patch 03/15] net/mlx5: HWS, added actions handling
[patch 04/15] net/mlx5: HWS, added tables handling
[patch 05/15] net/mlx5: HWS, added rules handling
[patch 06/15] net/mlx5: HWS, added definers handling
[patch 07/15] net/mlx5: HWS, added matchers functionality
[patch 08/15] net/mlx5: HWS, added FW commands handling
[patch 09/15] net/mlx5: HWS, added modify header pattern and args handling
[patch 10/15] net/mlx5: HWS, added vport handling
[patch 11/15] net/mlx5: HWS, added memory management handling
[patch 12/15] net/mlx5: HWS, added backward-compatible API handling
[patch 13/15] net/mlx5: HWS, added debug dump and internal headers
[patch 14/15] net/mlx5: HWS, added send engine and context handling
[patch 15/15] net/mlx5: HWS, added API and enabled HWS support
=======================
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Merge tag 'mlx5-updates-2024-09-02' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux
Saeed Mahameed says:
====================
mlx5-updates-2024-08-29
HW-Managed Flow Steering in mlx5 driver
Yevgeny Kliteynik says:
=======================
1. Overview
-----------
ConnectX devices support packet matching, modification, and redirection.
This functionality is referred as Flow Steering.
To configure a steering rule, the rule is written to the device-owned
memory. This memory is accessed and cached by the device when processing
a packet.
The first implementation of Flow Steering was done in FW, and it is
referred in the mlx5 driver as Device-Managed Flow Steering (DMFS).
Later we introduced SW-managed Flow Steering (SWS or SMFS), where the
driver is writing directly to the device's configuration memory (ICM)
through RC QP using RDMA operations (RDMA-read and RDAM-write), thus
achieving higher rates of rule insertion/deletion.
Now we introduce a new flow steering implementation: HW-Managed Flow
Steering (HWS or HMFS).
In this new approach, the driver is configuring steering rules directly
to the HW using the WQs with a special new type of WQE. This way we can
reach higher rule insertion/deletion rate with much lower CPU utilization
compared to SWS.
The key benefits of HWS as opposed to SWS:
+ HW manages the steering decision tree
- HW calculates CRC for each entry
- HW handles tree hash collisions
- HW & FW manage objects refcount
+ HW keeps cache coherency:
- HW provides tree access locking and synchronization
- HW provides notification on completion
+ Insertion rate isn’t affected by background traffic
- Dedicated HW components that handle insertion
2. Performance
--------------
Measuring Connection Tracking with simple IPv4 flows w/o NAT, we
are able to get ~5 times more flows offloaded per second using HWS.
3. Configuration
----------------
The enablement of HWS mode in eswitch manager is done using the same
devlink param that is already used for switching between FW-managed
steering and SW-managed steering modes:
# devlink dev param set pci/<PCI_ID> name flow_steering_mode cmod runtime value hmfs
4. Upstream Submission
----------------------
HWS support consists of 3 main components:
+ Steering:
- The lower layer that exposes HWS API to upper layers and implements
all the management of flow steering building blocks
+ FS-Core
- Implementation of fs_hws layer to enable fs_core to use HWS instead
of FW or SW steering
- Create HW steering action pools to utilize the ability of HWS to
share steering actions among different rules
- Add support for configuring HWS mode through devlink command,
similar to configuring SWS mode
+ Connection Tracking
- Implementation of CT support for HW steering
- Hooks up the CT ops for the new steering mode and uses the HWS API
to implement connection tracking.
Because of the large number of patches, we need to perform the submission
in several separate patch series. This series is the first submission that
lays the ground work for the next submissions, where an actual user of HWS
will be added.
5. Patches in this series
-------------------------
This patch series contains implementation of the first bullet from above.
=======================
* tag 'mlx5-updates-2024-09-02' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux:
net/mlx5: HWS, added API and enabled HWS support
net/mlx5: HWS, added send engine and context handling
net/mlx5: HWS, added debug dump and internal headers
net/mlx5: HWS, added backward-compatible API handling
net/mlx5: HWS, added memory management handling
net/mlx5: HWS, added vport handling
net/mlx5: HWS, added modify header pattern and args handling
net/mlx5: HWS, added FW commands handling
net/mlx5: HWS, added matchers functionality
net/mlx5: HWS, added definers handling
net/mlx5: HWS, added rules handling
net/mlx5: HWS, added tables handling
net/mlx5: HWS, added actions handling
net/mlx5: Added missing definitions in preparation for HW Steering
net/mlx5: Added missing mlx5_ifc definition for HW Steering
====================
Link: https://patch.msgid.link/20240909181250.41596-1-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'ipsec-next-2024-09-10' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next
Steffen Klassert says:
====================
pull request (net-next): ipsec-next 2024-09-10
1) Remove an unneeded WARN_ON on packet offload.
From Patrisious Haddad.
2) Add a copy from skb_seq_state to buffer function.
This is needed for the upcomming IPTFS patchset.
From Christian Hopps.
3) Spelling fix in xfrm.h.
From Simon Horman.
4) Speed up xfrm policy insertions.
From Florian Westphal.
5) Add and revert a patch to support xfrm interfaces
for packet offload. This patch was just half cooked.
6) Extend usage of the new xfrm_policy_is_dead_or_sk helper.
From Florian Westphal.
7) Update comments on sdb and xfrm_policy.
From Florian Westphal.
8) Fix a null pointer dereference in the new policy insertion
code From Florian Westphal.
9) Fix an uninitialized variable in the new policy insertion
code. From Nathan Chancellor.
* tag 'ipsec-next-2024-09-10' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next:
xfrm: policy: Restore dir assignments in xfrm_hash_rebuild()
xfrm: policy: fix null dereference
Revert "xfrm: add SA information to the offloaded packet"
xfrm: minor update to sdb and xfrm_policy comments
xfrm: policy: use recently added helper in more places
xfrm: add SA information to the offloaded packet
xfrm: policy: remove remaining use of inexact list
xfrm: switch migrate to xfrm_policy_lookup_bytype
xfrm: policy: don't iterate inexact policies twice at insert time
selftests: add xfrm policy insertion speed test script
xfrm: Correct spelling in xfrm.h
net: add copy from skb_seq_state to buffer function
xfrm: Remove documentation WARN_ON to limit return values for offloaded SA
====================
Link: https://patch.msgid.link/20240910065507.2436394-1-steffen.klassert@secunet.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Michael Chan says:
====================
bnxt_en: MSIX improvements
This patchset makes some improvements related to MSIX. The first
patch adjusts the default MSIX vectors assigned for RoCE. On the
PF, the number of MSIX is increased to 64 from the current 9. The
second patch allocates additional MSIX vectors ahead of time when
changing ethtool channels if dynamic MSIX is supported. The 3rd
patch makes sure that the IRQ name is not truncated.
====================
Link: https://patch.msgid.link/20240909202737.93852-1-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The name field of struct bnxt_irq is written using snprintf in
bnxt_setup_msix(). Make the field large enough to fit the maximal
formatted string to prevent truncation. Truncated IRQ names are
less meaningful to the user. For example, "enp4s0f0np0-TxRx-0"
gets truncated to "enp4s0f0np0-TxRx-" with the existing code.
Make sure we have space for the extra characters added to the IRQ
names:
- the characters introduced by the static format string: hyphens
- the maximal static substituted ring type string: "TxRx"
- the maximum length of an integer formatted as a string, even
though reasonable ring numbers would never be as long as this.
Signed-off-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20240909202737.93852-4-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
bnxt_check_rings() is called to ensure that we have the hardware ring
resources before committing to reinitialize with the new number of
rings. MSIX vectors are never checked at this point, because up
until recently we must first disable MSIX before we can allocate the
new set of MSIX vectors.
Now that we support dynamic MSIX allocation, check to make sure we
can dynamically allocate the new MSIX vectors as the last step in
bnxt_check_rings() if dynamic MSIX is supported.
For example, the IOMMU group may limit the number of MSIX vectors
for the device. With this patch, the ring change will fail more
gracefully when there is not enough MSIX vectors.
It is also better to move bnxt_check_rings() to be called as the last
step when changing ethtool rings.
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20240909202737.93852-3-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
If RocE is supported on the device, set the number of RoCE MSIX vectors
to the number of online CPUs + 1 and capped at these maximums:
VF: 2
NPAR: 5
PF: 64
For the PF, the maximum is now increased from the previous value
of 9 to get better performance for kernel applications.
Remove the unnecessary check for BNXT_FLAG_ROCE_CAP.
bnxt_set_dflt_ulp_msix() will only be called if the flag is set.
Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20240909202737.93852-2-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The "amlogic,tx-delay-ns" property schema has unnecessary type reference
as it's a standard unit suffix, and the constraints are in freeform
text rather than schema.
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://patch.msgid.link/20240909172342.487675-2-robh@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Sean Anderson says:
====================
net: xilinx: axienet: Partial checksum offload improvements
Partial checksum offload is not always used when it could be.
Enable it in more cases.
====================
Link: https://patch.msgid.link/20240909161016.1149119-1-sean.anderson@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The partial rx checksum feature computes a checksum over the entire
packet, regardless of the L3 protocol. Remove the check for IPv4.
Additionally, testing with csum.py (from kselftests) shows no anomalies
with 64-byte packets, so we can remove that check as well.
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20240909161016.1149119-5-sean.anderson@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When it is supported by hardware, we enable receive checksum offload
unconditionally. Update features to reflect this.
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Link: https://patch.msgid.link/20240909161016.1149119-4-sean.anderson@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Partial tx chechsumming is completely generic and does not depend on the
L3/L4 protocol. Signal this to the net subsystem by enabling the
more-generic offload feature (instead of restricting ourselves to
TCP/UDP over IPv4 checksumming only like is necessary with full
checksumming).
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20240909161016.1149119-3-sean.anderson@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
These variables are set but never used. Remove them.
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Link: https://patch.msgid.link/20240909161016.1149119-2-sean.anderson@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
There is a spelling mistake in the struct field tx_underun, rename
it to tx_underrun.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20240909134612.63912-1-colin.i.king@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
There is a spelling mistake in the struct field tx_underun, rename
it to tx_underrun.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://patch.msgid.link/20240909140021.64884-1-colin.i.king@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
sch_cake uses a cache of the first 16 values of the inverse square root
calculation for the Cobalt AQM to save some cycles on the fast path.
This cache is populated when the qdisc is first loaded, but there's
really no reason why it can't just be pre-populated. So change it to be
pre-populated with constants, which also makes it possible to constify
it.
This gives a modest space saving for the module (not counting debug data):
.text: -224 bytes
.rodata: +80 bytes
.bss: -64 bytes
Total: -192 bytes
Signed-off-by: Dave Taht <dave.taht@gmail.com>
[ fixed up comment, rewrote commit message ]
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://patch.msgid.link/20240909091630.22177-1-toke@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add net/ethtool/pse-pd.c to PSE NETWORK DRIVER to receive emails concerning
modifications to the ethtool part.
Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20240909114336.362174-1-kory.maincent@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
PCIe r6.0 changed the abbreviation for "Configuration Request Retry Status"
Completion Status from "CRS" to "RRS" and uses the terminology of
"Configuration RRS Software Visibility" instead of "CRS Software
Visibility".
Align the Linux usage with the r6.0 spec language. No functional change
intended.
It's confusing to make this change, but I think "RRS" *is* a better
abbreviation because it was easy to interpret "CRS" as "Completion Retry
Status", which really didn't make any sense.
Link: https://lore.kernel.org/r/20240827234848.4429-4-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Per PCIe r6.0, sec 2.3.2, when a Root Complex handles a Completion with
Request Retry Status for a Configuration Read Request that includes both
bytes of the Vendor ID field, it must complete the Request to the host by
returning 0001h for the Vendor ID and all 1's for any additional bytes.
Previously we only returned the 0001h Vendor ID value if we got an RRS
completion for reads of exactly 4 bytes. A read of 2 bytes would not
qualify, although the spec says it should.
Check for reads of 2 or more bytes including the Vendor ID.
I don't think this will fix any observable problems because RRS only
applies to the first config reads after reset, and those are all currently
dword (4-byte) reads.
Link: https://lore.kernel.org/r/20240827234848.4429-3-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
After a device reset, delays are required before the device can
successfully complete config accesses. PCIe r6.0, sec 6.6, specifies some
delays required before software can perform config accesses. Devices that
require more time after those delays may respond to config accesses with
Configuration Request Retry Status (RRS) completions.
Callers of pci_dev_wait() are responsible for delays until the device can
respond to config accesses. pci_dev_wait() waits any additional time until
the device can successfully complete config accesses.
Reading config space of devices that are not present or not ready typically
returns ~0 (PCI_ERROR_RESPONSE). Previously we polled the Command register
until we got a value other than ~0. This is sometimes a problem because
Root Complex handling of RRS completions may include several retries and
implementation-specific behavior that is invisible to software (see sec
2.3.2), so the exponential backoff in pci_dev_wait() may not work as
intended.
Linux enables Configuration RRS Software Visibility on all Root Ports that
support it. If it is enabled, read the Vendor ID instead of the Command
register. RRS completions cause immediate return of the 0x0001 reserved
Vendor ID value, so the pci_dev_wait() backoff works correctly.
When a read of Vendor ID eventually completes successfully by returning a
non-0x0001 value (the Vendor ID or 0xffff for VFs), the device should be
initialized and ready to respond to config requests.
For conventional PCI devices or devices below Root Ports that don't support
Configuration RRS Software Visibility, poll the Command register as before.
This was developed independently, but is very similar to Stanislav
Spassov's previous work at
https://lore.kernel.org/linux-pci/20200223122057.6504-1-stanspas@amazon.com
Link: https://lore.kernel.org/r/20240827234848.4429-2-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Duc Dang <ducdang@google.com>
i915 pointer is not needed in this function and all the others simply
calculate the i915_pmu container based on the event->pmu. Follow the
same logic as in other functions.
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240909204340.3646458-2-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
There's no reason to hardcode checking for integrated graphics on a
specific pci slot. That information is already available per platform an
can be checked with IS_DGFX().
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240909204340.3646458-1-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Remove magic number 7 by introducing a GENMASK macro instead.
Remove magic number 0x80 by using the BIT macro instead.
Signed-off-by: Pieter Van Trappen <pieter.van.trappen@cern.ch>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20240909134301.75448-1-vtpieter@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
As Rob pointed in another mail thread [1], the binding of tja11xx PHY
is completely broken, the schema cannot catch the error in the DTS. A
compatiable string must be needed if we want to add a custom propety.
So extract known PHY IDs from the tja11xx PHY drivers and convert them
into supported compatible string list to fix the broken binding issue.
Fixes: 52b2fe4535 ("dt-bindings: net: tja11xx: add nxp,refclk_in property")
Link: https://lore.kernel.org/31058f49-bac5-49a9-a422-c43b121bf049@kernel.org # [1]
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20240909012152.431647-1-wei.fang@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Test a few possible cases where we use SOF_TIMESTAMPING_OPT_RX_FILTER
with software or hardware report/generation flag.
Signed-off-by: Jason Xing <kernelxing@tencent.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20240909015612.3856-3-kerneljasonxing@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
introduce a new flag SOF_TIMESTAMPING_OPT_RX_FILTER in the receive
path. User can set it with SOF_TIMESTAMPING_SOFTWARE to filter
out rx software timestamp report, especially after a process turns on
netstamp_needed_key which can time stamp every incoming skb.
Previously, we found out if an application starts first which turns on
netstamp_needed_key, then another one only passing SOF_TIMESTAMPING_SOFTWARE
could also get rx timestamp. Now we handle this case by introducing this
new flag without breaking users.
Quoting Willem to explain why we need the flag:
"why a process would want to request software timestamp reporting, but
not receive software timestamp generation. The only use I see is when
the application does request
SOF_TIMESTAMPING_SOFTWARE | SOF_TIMESTAMPING_TX_SOFTWARE."
Similarly, this new flag could also be used for hardware case where we
can set it with SOF_TIMESTAMPING_RAW_HARDWARE, then we won't receive
hardware receive timestamp.
Another thing about errqueue in this patch I have a few words to say:
In this case, we need to handle the egress path carefully, or else
reporting the tx timestamp will fail. Egress path and ingress path will
finally call sock_recv_timestamp(). We have to distinguish them.
Errqueue is a good indicator to reflect the flow direction.
Suggested-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jason Xing <kernelxing@tencent.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20240909015612.3856-2-kerneljasonxing@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
