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A lot of drivers follow the same scheme to stop / start queues
without introducing locks between xmit and NAPI tx completions.
I'm guessing they all copy'n'paste each other's code.
The original code dates back all the way to e1000 and Linux 2.6.19.
Smaller drivers shy away from the scheme and introduce a lock
which may cause deadlocks in netpoll.
Provide macros which encapsulate the necessary logic.
The macros do not prevent false wake ups, the extra barrier
required to close that race is not worth it. See discussion in:
https://lore.kernel.org/all/c39312a2-4537-14b4-270c-9fe1fbb91e89@gmail.com/
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Use syntax highlight, comment out the "..." since they are
not valid C.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Somehow it feels more right to start from the probe then open,
then tx... Much like the lifetime of the driver itself.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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driver.rst had a historical form of list of common problems.
In the age os Sphinx and rendered documentation it's better
to use the more usual title + text format.
This will allow us to render kdoc into the output more naturally.
No changes to the actual text.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull in pre-requisite patches from Guenter Roeck to constify
pointers to hwmon_channel_info.
* 'hwmon-const' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: constify pointers to hwmon_channel_info
Link: https://lore.kernel.org/all/3a0391e7-21f6-432a-9872-329e298e1582@roeck-us.net/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver fixes from Greg KH:
"Here are some small tty and serial driver fixes for some reported
problems:
- fsl_uart driver bugfixes
- sh-sci serial driver bugfixes
- renesas serial driver DT binding bugfixes
- 8250 DMA bugfix
All of these have been in linux-next for a while with no reported
problems"
* tag 'tty-6.3-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
tty: serial: sh-sci: Fix Rx on RZ/G2L SCI
tty: serial: fsl_lpuart: fix crash in lpuart_uport_is_active
tty: serial: fsl_lpuart: avoid checking for transfer complete when UARTCTRL_SBK is asserted in lpuart32_tx_empty
serial: 8250: Prevent starting up DMA Rx on THRI interrupt
dt-bindings: serial: renesas,scif: Fix 4th IRQ for 4-IRQ SCIFs
tty: serial: sh-sci: Fix transmit end interrupt handler
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM fixes from Andrew Morton:
"28 hotfixes.
23 are cc:stable and the other five address issues which were
introduced during this merge cycle.
20 are for MM and the remainder are for other subsystems"
* tag 'mm-hotfixes-stable-2023-04-07-16-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (28 commits)
maple_tree: fix a potential concurrency bug in RCU mode
maple_tree: fix get wrong data_end in mtree_lookup_walk()
mm/swap: fix swap_info_struct race between swapoff and get_swap_pages()
nilfs2: fix sysfs interface lifetime
mm: take a page reference when removing device exclusive entries
mm: vmalloc: avoid warn_alloc noise caused by fatal signal
nilfs2: initialize "struct nilfs_binfo_dat"->bi_pad field
nilfs2: fix potential UAF of struct nilfs_sc_info in nilfs_segctor_thread()
zsmalloc: document freeable stats
zsmalloc: document new fullness grouping
fsdax: force clear dirty mark if CoW
mm/hugetlb: fix uffd wr-protection for CoW optimization path
mm: enable maple tree RCU mode by default
maple_tree: add RCU lock checking to rcu callback functions
maple_tree: add smp_rmb() to dead node detection
maple_tree: fix write memory barrier of nodes once dead for RCU mode
maple_tree: remove extra smp_wmb() from mas_dead_leaves()
maple_tree: fix freeing of nodes in rcu mode
maple_tree: detect dead nodes in mas_start()
maple_tree: be more cautious about dead nodes
...
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I recently started uploading prebuilt stable versions of LLVM to
kernel.org, which should make building the kernel with LLVM more
accessible to maintainers and developers. Link them in the LLVM
documentation to make this more visible.
Link: https://lore.kernel.org/20230319235619.GA18547@dev-arch.thelio-3990X/
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Bill Wendling <morbo@google.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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HWmon core receives an array of pointers to hwmon_channel_info and it
does not modify it, thus it can be array of const pointers for safety.
This allows drivers to make them also const.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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UBSAN: shift-out-of-bounds in net/ipv4/tcp_input.c:555:23
shift exponent 255 is too large for 32-bit type 'int'
CPU: 1 PID: 7907 Comm: ssh Not tainted 6.3.0-rc4-00161-g62bad54b26db-dirty #206
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl+0x136/0x150
__ubsan_handle_shift_out_of_bounds+0x21f/0x5a0
tcp_init_transfer.cold+0x3a/0xb9
tcp_finish_connect+0x1d0/0x620
tcp_rcv_state_process+0xd78/0x4d60
tcp_v4_do_rcv+0x33d/0x9d0
__release_sock+0x133/0x3b0
release_sock+0x58/0x1b0
'maxwin' is int, shifting int for 32 or more bits is undefined behaviour.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The arch_support table was not sorted alphabetically.
Sorts the table properly.
Fixes: 0438aadfa69a ("rust: arch/um: Add support for CONFIG_RUST under x86_64 UML")
Link: https://lore.kernel.org/rust-for-linux/CANiq72nXMsnUsJNZOG-QZiCVOqa9dRUSMc4RAS3ExLZNJ7VhHg@mail.gmail.com
Reported-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Signed-off-by: Thomas Bamelis <thomas@bamelis.dev>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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Conflicts:
drivers/net/ethernet/google/gve/gve.h
3ce934558097 ("gve: Secure enough bytes in the first TX desc for all TCP pkts")
75eaae158b1b ("gve: Add XDP DROP and TX support for GQI-QPL format")
https://lore.kernel.org/all/20230406104927.45d176f5@canb.auug.org.au/
https://lore.kernel.org/all/c5872985-1a95-0bc8-9dcc-b6f23b439e9d@tessares.net/
Adjacent changes:
net/can/isotp.c
051737439eae ("can: isotp: fix race between isotp_sendsmg() and isotp_release()")
96d1c81e6a04 ("can: isotp: add module parameter for maximum pdu size")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Like the other boards from the D*45* series, this one sets up the
outputs not quite correctly.
Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20230405201220.2197826-1-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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When freeable class stat was added to classes file (back in 2016) we
forgot to update zsmalloc documentation. Fix that.
Link: https://lkml.kernel.org/r/20230325024631.2817153-3-senozhatsky@chromium.org
Fixes: 1120ed548394 ("mm/zsmalloc: add `freeable' column to pool stat")
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Patch series "zsmalloc: minor documentation updates".
Two minor patches that bring zsmalloc documentation up to date.
This patch (of 2):
Update documentation and reflect new zspages fullness grouping (we don't
use almost_empty and almost_full anymore).
Link: https://lkml.kernel.org/r/20230325024631.2817153-1-senozhatsky@chromium.org
Link: https://lkml.kernel.org/r/20230325024631.2817153-2-senozhatsky@chromium.org
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Fixes: 67e157eb3639 ("zsmalloc: show per fullness group class stats")
Cc: Minchan Kim <minchan@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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There's no need for "#address-cells/#size-cells" in the brcm,sf2 node as
no immediate child nodes have an address. What was probably intended was
to put them in the 'ports' node, but that's not necessary as that is
covered by ethernet-switch.yaml via dsa.yaml.
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20230404204152.635400-1-robh@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The schema doesn't allow for a single (unaddressed) ethernet port node
nor does a single port switch make much sense. So if there's always
multiple child nodes, "#address-cells" and "#size-cells" should be
required.
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20230404204213.635773-1-robh@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next
Marc Kleine-Budde says:
====================
pull-request: can-next 2023-04-04-2
The first patch is by Oliver Hartkopp and makes the maximum pdu size
of the CAN ISOTP protocol configurable.
The following 5 patches are by Dario Binacchi and add support for the
bxCAN controller by ST.
Geert Uytterhoeven's patch for the rcar_canfd driver fixes a sparse
warning.
Peng Fan's patch adds an optional power-domains property to the
flexcan device tree binding.
Frank Jungclaus adds support for CAN_CTRLMODE_BERR_REPORTING to the
esd_usb driver.
The last patch is by Oliver Hartkopp and converts the USB IDs of the
kvaser_usb driver to hexadecimal values.
* tag 'linux-can-next-for-6.4-20230404-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next:
kvaser_usb: convert USB IDs to hexadecimal values
can: esd_usb: Add support for CAN_CTRLMODE_BERR_REPORTING
dt-bindings: can: fsl,flexcan: add optional power-domains property
can: rcar_canfd: rcar_canfd_probe(): fix plain integer in transceivers[] init
can: bxcan: add support for ST bxCAN controller
ARM: dts: stm32: add pin map for CAN controller on stm32f4
ARM: dts: stm32: add CAN support on stm32f429
dt-bindings: net: can: add STM32 bxcan DT bindings
dt-bindings: arm: stm32: add compatible for syscon gcan node
can: isotp: add module parameter for maximum pdu size
====================
Link: https://lore.kernel.org/r/20230404145908.1714400-1-mkl@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Pull kvm fixes from Paolo Bonzini:
"PPC:
- Hide KVM_CAP_IRQFD_RESAMPLE if XIVE is enabled
s390:
- Fix handling of external interrupts in protected guests
x86:
- Resample the pending state of IOAPIC interrupts when unmasking them
- Fix usage of Hyper-V "enlightened TLB" on AMD
- Small fixes to real mode exceptions
- Suppress pending MMIO write exits if emulator detects exception
Documentation:
- Fix rST syntax"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
docs: kvm: x86: Fix broken field list
KVM: PPC: Make KVM_CAP_IRQFD_RESAMPLE platform dependent
KVM: s390: pv: fix external interruption loop not always detected
KVM: nVMX: Do not report error code when synthesizing VM-Exit from Real Mode
KVM: x86: Clear "has_error_code", not "error_code", for RM exception injection
KVM: x86: Suppress pending MMIO write exits if emulator detects exception
KVM: x86/ioapic: Resample the pending state of an IRQ when unmasking
KVM: irqfd: Make resampler_list an RCU list
KVM: SVM: Flush Hyper-V TLB when required
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Add a missing ":" to fix a broken field list.
Signed-off-by: Takahiro Itazuri <itazur@amazon.com>
Fixes: ba7bb663f554 ("KVM: x86: Provide per VM capability for disabling PMU virtualization")
Message-Id: <20230331093116.99820-1-itazur@amazon.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Add optional power-domains property for i.MX8 usage.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/all/20230328054602.1974255-1-peng.fan@oss.nxp.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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Add documentation for the built-in switch which can be found in the
MediaTek MT7988 SoC.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add docs on extended 64-bit immediate instructions, including six instructions
previously undocumented. Include a brief description of maps and variables,
as used by those instructions.
V1 -> V2: rebased on top of latest master
V2 -> V3: addressed comments from Alexei
V3 -> V4: addressed comments from David Vernet
Signed-off-by: Dave Thaler <dthaler@microsoft.com>
Link: https://lore.kernel.org/r/20230326054946.2331-1-dthaler1968@googlemail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here are three small changes for 6.3-rc5 semi-related to driver core
stuff:
- documentation update where we move the security_bugs file to a more
relevant location.
- mdt/spi-nor debugfs memory leak fix that's been floating around for
a long time and acked by the maintainer
- cacheinfo bugfix for a regression in 6.3-rc1
All have been in linux-next with no reported problems"
* tag 'driver-core-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
cacheinfo: Fix LLC is not exported through sysfs
Documentation/security-bugs: move from admin-guide/ to process/
mtd: spi-nor: fix memory leak when using debugfs_lookup()
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
"Some pin control fixes for the v6.3 series.
The most notable and urgent one is probably the AMD fix which affects
AMD laptops, found by the Chromium people.
Summary:
- Fix up the Kconfig options for MediaTek MT7981
- Fix the irq domain name in the AT91-PIO4 driver
- Fix some alternative muxing modes in the Ocelot driver
- Allocate the GPIO numbers dynamically in the STM32 driver
- Disable and mask interrupts on resume in the AMD driver
- Fix a typo in the Qualcomm SM8550 pin control device tree bindings"
* tag 'pinctrl-v6.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
dt-bindings: pinctrl: qcom,sm8550-lpass-lpi: allow input-enabled and bias-bus-hold
pinctrl: amd: Disable and mask interrupts on resume
pinctrl: stm32: use dynamic allocation of GPIO base
pinctrl: ocelot: Fix alt mode for ocelot
pinctrl: at91-pio4: fix domain name assignment
pinctrl: mediatek: fix naming inconsistency
pinctrl: mediatek: add missing options to PINCTRL_MT7981
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Now that struct task_struct objects are RCU safe, and bpf_task_acquire()
can return NULL, we should update the BPF task kfunc documentation to
reflect the current state of the API.
Signed-off-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/r/20230331195733.699708-4-void@manifault.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2023-03-30 (documentation, ice)
This series contains updates to driver documentation and the ice driver.
Tony removes links and addresses related to the out-of-tree driver from the
Intel ethernet driver documentation.
Jake removes a comment that is no longer valid to the ice driver.
* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue:
ice: remove comment about not supporting driver reinit
Documentation/eth/intel: Remove references to SourceForge
Documentation/eth/intel: Update address for driver support
====================
Link: https://lore.kernel.org/r/20230330165935.2503604-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add optional power domains property
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230328061518.1985981-1-peng.fan@oss.nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Things that are not implemented:
- cable tests
- bitmaks in the requests don't work (needs multi-attr support in ynl.py)
- stats-get seems to return nonsense (not passing a bitmask properly?)
- notifications are not tested
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Conflicts:
drivers/net/ethernet/mediatek/mtk_ppe.c
3fbe4d8c0e53 ("net: ethernet: mtk_eth_soc: ppe: add support for flow accounting")
924531326e2d ("net: ethernet: mtk_eth_soc: add missing ppe cache flush when deleting a flow")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The out-of-tree driver is hosted on SourceForge, as this does not apply
to the kernel driver remove references to it. Also do some minor
formatting changes around this section.
Suggested-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
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Update the email address for support to use Intel Wired LAN, the mailing
list used for kernel development.
Suggested-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux
Saeed Mahameed says:
====================
mlx5-updates-2023-03-28
Dragos Tatulea says:
====================
net/mlx5e: RX, Drop page_cache and fully use page_pool
For page allocation on the rx path, the mlx5e driver has been using an
internal page cache in tandem with the page pool. The internal page
cache uses a queue for page recycling which has the issue of head of
queue blocking.
This patch series drops the internal page_cache altogether and uses the
page_pool to implement everything that was done by the page_cache
before:
* Let the page_pool handle dma mapping and unmapping.
* Use fragmented pages with fragment counter instead of tracking via
page ref.
* Enable skb recycling.
The patch series has the following effects on the rx path:
* Improved performance for the cases when there was low page recycling
due to head of queue blocking in the internal page_cache. The test
for this was running a single iperf TCP stream to a rx queue
which is bound on the same cpu as the application.
|-------------+--------+--------+------+---------|
| rq type | before | after | unit | diff |
|-------------+--------+--------+------+---------|
| striding rq | 30.1 | 31.4 | Gbps | 4.14 % |
| legacy rq | 30.2 | 33.0 | Gbps | 8.48 % |
|-------------+--------+--------+------+---------|
* Small XDP performance degradation. The test was is XDP drop
program running on a single rx queue with small packets incoming
it looks like this:
|-------------+----------+----------+------+---------|
| rq type | before | after | unit | diff |
|-------------+----------+----------+------+---------|
| striding rq | 19725449 | 18544617 | pps | -6.37 % |
| legacy rq | 19879931 | 18631841 | pps | -6.70 % |
|-------------+----------+----------+------+---------|
This will be handled in a different patch series by adding support for
multi-packet per page.
* For other cases the performance is roughly the same.
The above numbers were obtained on the following system:
24 core Intel(R) Xeon(R) Platinum 8380 CPU @ 2.30GHz
32 GB RAM
ConnectX-7 single port
The breakdown on the patch series is the following:
* Preparations for introducing the mlx5e_frag_page struct.
* Delete the mlx5e_page_cache struct.
* Enable dma mapping from page_pool.
* Enable skb recycling and fragment counting.
* Do deferred release of pages (just before alloc) to ensure better
page_pool cache utilization.
====================
* tag 'mlx5-updates-2023-03-28' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux:
net/mlx5e: RX, Remove unnecessary recycle parameter and page_cache stats
net/mlx5e: RX, Break the wqe bulk refill in smaller chunks
net/mlx5e: RX, Increase WQE bulk size for legacy rq
net/mlx5e: RX, Split off release path for xsk buffers for legacy rq
net/mlx5e: RX, Defer page release in legacy rq for better recycling
net/mlx5e: RX, Change wqe last_in_page field from bool to bit flags
net/mlx5e: RX, Defer page release in striding rq for better recycling
net/mlx5e: RX, Rename xdp_xmit_bitmap to a more generic name
net/mlx5e: RX, Enable skb page recycling through the page_pool
net/mlx5e: RX, Enable dma map and sync from page_pool allocator
net/mlx5e: RX, Remove internal page_cache
net/mlx5e: RX, Store SHAMPO header pages in array
net/mlx5e: RX, Remove alloc unit layout constraint for striding rq
net/mlx5e: RX, Remove alloc unit layout constraint for legacy rq
net/mlx5e: RX, Remove mlx5e_alloc_unit argument in page allocation
====================
Link: https://lore.kernel.org/r/20230328205623.142075-1-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The fourth interrupt on SCIF variants with four interrupts (RZ/A1) is
the Break interrupt, not the Transmit End interrupt (like on SCI(g)).
Update the description and interrupt name to fix this.
Fixes: 384d00fae8e51f8f ("dt-bindings: serial: sh-sci: Convert to json-schema")
Cc: stable <stable@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/719d1582e0ebbe3d674e3a48fc26295e1475a4c3.1679046394.git.geert+renesas@glider.be
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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bias-bus-hold
Add missing common pin configuration properties: input-enabled and
bias-bus-hold.
Fixes: 268e97ccc311 ("dt-bindings: pinctrl: qcom,sm8550-lpass-lpi-pinctrl: add SM8550 LPASS")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230324084127.29362-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Add a definition for sub-type to the protocol spec doc and a description of
its usage for C arrays in genetlink-legacy.
Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Describe the genetlink-legacy support for using struct definitions
for fixed headers and for binary attributes.
Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The openvswitch family has a fixed header, uses struct attrs and has array
values. This partial spec demonstrates these features in the YNL CLI. These
specs are sufficient to create, delete and dump datapaths and to dump vports:
$ ./tools/net/ynl/cli.py \
--spec Documentation/netlink/specs/ovs_datapath.yaml \
--do dp-new --json '{ "dp-ifindex": 0, "name": "demo", "upcall-pid": 0}'
None
$ ./tools/net/ynl/cli.py \
--spec Documentation/netlink/specs/ovs_datapath.yaml \
--dump dp-get --json '{ "dp-ifindex": 0 }'
[{'dp-ifindex': 3,
'masks-cache-size': 256,
'megaflow-stats': {'cache-hits': 0,
'mask-hit': 0,
'masks': 0,
'pad1': 0,
'padding': 0},
'name': 'test',
'stats': {'flows': 0, 'hit': 0, 'lost': 0, 'missed': 0},
'user-features': {'dispatch-upcall-per-cpu',
'tc-recirc-sharing',
'unaligned'}},
{'dp-ifindex': 48,
'masks-cache-size': 256,
'megaflow-stats': {'cache-hits': 0,
'mask-hit': 0,
'masks': 0,
'pad1': 0,
'padding': 0},
'name': 'demo',
'stats': {'flows': 0, 'hit': 0, 'lost': 0, 'missed': 0},
'user-features': set()}]
$ ./tools/net/ynl/cli.py \
--spec Documentation/netlink/specs/ovs_datapath.yaml \
--do dp-del --json '{ "dp-ifindex": 0, "name": "demo"}'
None
$ ./tools/net/ynl/cli.py \
--spec Documentation/netlink/specs/ovs_vport.yaml \
--dump vport-get --json '{ "dp-ifindex": 3 }'
[{'dp-ifindex': 3,
'ifindex': 3,
'name': 'test',
'port-no': 0,
'stats': {'rx-bytes': 0,
'rx-dropped': 0,
'rx-errors': 0,
'rx-packets': 0,
'tx-bytes': 0,
'tx-dropped': 0,
'tx-errors': 0,
'tx-packets': 0},
'type': 'internal',
'upcall-pid': [0],
'upcall-stats': {'fail': 0, 'success': 0}}]
Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add support for netlink families that add an optional fixed header structure
after the genetlink header and before any attributes. The fixed-header can be
specified on a per op basis, or once for all operations, which serves as a
default value that can be overridden.
Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add support for decoding attributes that contain C structs.
Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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We don't state explicitly that reverts need to be submitted
as a patch. It occasionally comes up.
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20230327172646.2622943-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The recycle parameter used during page release is no longer
necessary: the page pool can detect when the page cannot be
recycled to the cache or ring without any outside hint.
The page pool will also take care of cleaning up after itself
once all the inflight pages have been released. So no need to
explicitly release pages to the system.
Remove the internal page_cache stats as the mlx5e_page_cache
struct no longer exists.
Delete the documentation entries along with the stats.
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Add documentation of device tree bindings for the STM32 basic extended
CAN (bxcan) controller.
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/all/20230328073328.3949796-3-dario.binacchi@amarulasolutions.com
[mkl: drop unneeded quotes]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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Since commit ad440432d1f9 ("dt-bindings: mfd: Ensure 'syscon' has a
more specific compatible") it is required to provide at least 2 compatibles
string for syscon node.
This patch documents the new compatible for stm32f4 SoC to support
global/shared CAN registers access for bxCAN controllers.
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/all/20230328073328.3949796-2-dario.binacchi@amarulasolutions.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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This attribute, which is part of ethtool's ring param configuration
allows the user to specify the maximum number of the packet's payload
that can be written directly to the device.
Example usage:
# ethtool -G [interface] tx-push-buf-len [number of bytes]
Co-developed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Shay Agroskin <shayagr@amazon.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Pull MTD fixes from Miquel Raynal:
"Raw NAND controller driver fixes:
- meson:
- Invalidate cache on polling ECC bit
- Initialize struct with zeroes
- nandsim: Artificially prevent sequential page reads
ECC engine driver fixes:
- mxic-ecc: Fix mxic_ecc_data_xfer_wait_for_completion() when irq is
used
Binging fixes:
- jedec,spi-nor: Document CPOL/CPHA support"
* tag 'mtd/fixes-for-6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux:
mtd: rawnand: meson: invalidate cache on polling ECC bit
mtd: rawnand: nandsim: Artificially prevent sequential page reads
dt-bindings: mtd: jedec,spi-nor: Document CPOL/CPHA support
mtd: nand: mxic-ecc: Fix mxic_ecc_data_xfer_wait_for_completion() when irq is used
mtd: rawnand: meson: initialize struct with zeroes
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BCM53134 are B53 switches connected by MDIO.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt driver fixes from Greg KH:
"Here are a small set of USB and Thunderbolt driver fixes for reported
problems and a documentation update, for 6.3-rc4.
Included in here are:
- documentation update for uvc gadget driver
- small thunderbolt driver fixes
- cdns3 driver fixes
- dwc3 driver fixes
- dwc2 driver fixes
- chipidea driver fixes
- typec driver fixes
- onboard_usb_hub device id updates
- quirk updates
All of these have been in linux-next with no reported problems"
* tag 'usb-6.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (30 commits)
usb: dwc2: fix a race, don't power off/on phy for dual-role mode
usb: dwc2: fix a devres leak in hw_enable upon suspend resume
usb: chipidea: core: fix possible concurrent when switch role
usb: chipdea: core: fix return -EINVAL if request role is the same with current role
thunderbolt: Rename shadowed variables bit to interrupt_bit and auto_clear_bit
thunderbolt: Disable interrupt auto clear for rings
thunderbolt: Use const qualifier for `ring_interrupt_index`
usb: gadget: Use correct endianness of the wLength field for WebUSB
uas: Add US_FL_NO_REPORT_OPCODES for JMicron JMS583Gen 2
usb: cdnsp: changes PCI Device ID to fix conflict with CNDS3 driver
usb: cdns3: Fix issue with using incorrect PCI device function
usb: cdnsp: Fixes issue with redundant Status Stage
MAINTAINERS: make me a reviewer of USB/IP
thunderbolt: Use scale field when allocating USB3 bandwidth
thunderbolt: Limit USB3 bandwidth of certain Intel USB4 host routers
thunderbolt: Call tb_check_quirks() after initializing adapters
thunderbolt: Add missing UNSET_INBOUND_SBTX for retimer access
thunderbolt: Fix memory leak in margining
usb: dwc2: drd: fix inconsistent mode if role-switch-default-mode="host"
docs: usb: Add documentation for the UVC Gadget
...
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Add extended call instructions. Uses the term "program-local" for
call by offset. And there are instructions for calling helper functions
by "address" (the old way of using integer values), and for calling
helper functions by BTF ID (for kfuncs).
V1 -> V2: addressed comments from David Vernet
V2 -> V3: make descriptions in table consistent with updated names
V3 -> V4: addressed comments from Alexei
V4 -> V5: fixed alignment
Signed-off-by: Dave Thaler <dthaler@microsoft.com>
Acked-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/r/20230326033117.1075-1-dthaler1968@googlemail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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KF_RELEASE kfuncs are not currently treated as having KF_TRUSTED_ARGS,
even though they have a superset of the requirements of KF_TRUSTED_ARGS.
Like KF_TRUSTED_ARGS, KF_RELEASE kfuncs require a 0-offset argument, and
don't allow NULL-able arguments. Unlike KF_TRUSTED_ARGS which require
_either_ an argument with ref_obj_id > 0, _or_ (ref->type &
BPF_REG_TRUSTED_MODIFIERS) (and no unsafe modifiers allowed), KF_RELEASE
only allows for ref_obj_id > 0. Because KF_RELEASE today doesn't
automatically imply KF_TRUSTED_ARGS, some of these requirements are
enforced in different ways that can make the behavior of the verifier
feel unpredictable. For example, a KF_RELEASE kfunc with a NULL-able
argument will currently fail in the verifier with a message like, "arg#0
is ptr_or_null_ expected ptr_ or socket" rather than "Possibly NULL
pointer passed to trusted arg0". Our intention is the same, but the
semantics are different due to implemenetation details that kfunc authors
and BPF program writers should not need to care about.
Let's make the behavior of the verifier more consistent and intuitive by
having KF_RELEASE kfuncs imply the presence of KF_TRUSTED_ARGS. Our
eventual goal is to have all kfuncs assume KF_TRUSTED_ARGS by default
anyways, so this takes us a step in that direction.
Note that it does not make sense to assume KF_TRUSTED_ARGS for all
KF_ACQUIRE kfuncs. KF_ACQUIRE kfuncs can have looser semantics than
KF_RELEASE, with e.g. KF_RCU | KF_RET_NULL. We may want to have
KF_ACQUIRE imply KF_TRUSTED_ARGS _unless_ KF_RCU is specified, but that
can be left to another patch set, and there are no such subtleties to
address for KF_RELEASE.
Signed-off-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/r/20230325213144.486885-4-void@manifault.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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