The mostly same codes for checking the current PCM state and calling
hwsync are found in a few places. This patch simplifies them by
creating a common helper function.
It also fixes a couple of cases where we missed the proper state check
(e.g. PAUSED state wasn't handled in rewind and snd_pcm_hwsync()),
too.
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
when deleting an instance. It also creates a selftest that triggers that bug.
Fix the delayed optimization happening after kprobes boot up self tests
being removed by freeing of init memory.
Comment kprobes on why the delay optimization is not a problem for removal
of modules, to keep other developers from searching that riddle.
Fix another rcu isn't watching in stack trace tracing.
Naveen N. Rao (4):
ftrace: Simplify glob handling in unregister_ftrace_function_probe_func()
ftrace/instances: Clear function triggers when removing instances
selftests/ftrace: Fix bashisms
selftests/ftrace: Add test to remove instance with active event triggers
Steven Rostedt (1):
tracing: Move postpone selftests to core from early_initcall
Steven Rostedt (VMware) (3):
ftrace: Remove #ifdef from code and add clear_ftrace_function_probes() stub
kprobes: Document how optimized kprobes are removed from module unload
tracing: Make sure RCU is watching before calling a stack trace
Thomas Gleixner (1):
tracing/kprobes: Enforce kprobes teardown after testing
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Merge tag 'trace-v4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
- Fix a bug caused by not cleaning up the new instance unique triggers
when deleting an instance. It also creates a selftest that triggers
that bug.
- Fix the delayed optimization happening after kprobes boot up self
tests being removed by freeing of init memory.
- Comment kprobes on why the delay optimization is not a problem for
removal of modules, to keep other developers from searching that
riddle.
- Fix another case of rcu not watching in stack trace tracing.
* tag 'trace-v4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Make sure RCU is watching before calling a stack trace
kprobes: Document how optimized kprobes are removed from module unload
selftests/ftrace: Add test to remove instance with active event triggers
selftests/ftrace: Fix bashisms
ftrace: Remove #ifdef from code and add clear_ftrace_function_probes() stub
ftrace/instances: Clear function triggers when removing instances
ftrace: Simplify glob handling in unregister_ftrace_function_probe_func()
tracing/kprobes: Enforce kprobes teardown after testing
tracing: Move postpone selftests to core from early_initcall
Add the DPAA 1.x FMan nodes for the ARM based platforms.
Using separate files for each port as not all ports are used on all
devices. Different numbering of ports is also possible on different
devices.
Signed-off-by: Madalin Bucur <madalin.bucur@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
The PWM driver has now capability to specify the PWM polarity
which is e.g. for backlight control. Allow to make use of PWM
polarity by specifying pwm-cells to be 3 in the base dt.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
GPCv2 IP block is a part of i.MX7 SoC. Select it to make corresponding
driver availible to support DT changes following this patch.
Cc: yurovsky@gmail.com
Cc: Dong Aisheng <aisheng.dong@nxp.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
List GPR block as compatible "fsl,imx6q-iomuxc-gpr" to support drivers
requesting it that way (PCIe driver is one example).
Cc: yurovsky@gmail.com
Cc: Dong Aisheng <aisheng.dong@nxp.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Now that support for 'anatop-enable-bit' has been added to ANADIG
driver, reintroduce 'anatop-enable-bit' for all applicable LDOs.
Cc: yurovsky@gmail.com
Cc: Dong Aisheng <aisheng.dong@nxp.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Pull block fixes from Jens Axboe:
"A small collection of fixes that should go into this cycle.
- a pull request from Christoph for NVMe, which ended up being
manually applied to avoid pulling in newer bits in master. Mostly
fibre channel fixes from James, but also a few fixes from Jon and
Vijay
- a pull request from Konrad, with just a single fix for xen-blkback
from Gustavo.
- a fuseblk bdi fix from Jan, fixing a regression in this series with
the dynamic backing devices.
- a blktrace fix from Shaohua, replacing sscanf() with kstrtoull().
- a request leak fix for drbd from Lars, fixing a regression in the
last series with the kref changes. This will go to stable as well"
* 'for-linus' of git://git.kernel.dk/linux-block:
nvmet: release the sq ref on rdma read errors
nvmet-fc: remove target cpu scheduling flag
nvme-fc: stop queues on error detection
nvme-fc: require target or discovery role for fc-nvme targets
nvme-fc: correct port role bits
nvme: unmap CMB and remove sysfs file in reset path
blktrace: fix integer parse
fuseblk: Fix warning in super_setup_bdi_name()
block: xen-blkback: add null check to avoid null pointer dereference
drbd: fix request leak introduced by locking/atomic, kref: Kill kref_sub()
Reset GPIO is active low.
Currently driver uses gpiod_set_value(1) to clean reset, which depends
on device tree to contain GPIO_ACTIVE_HIGH - that does not match reality.
This fixes driver to use _raw version of gpiod_set_value() to enforce
active-low semantics despite of what's written in device tree. Allowing
device tree to override that only opens possibility for errors and does
not add any value.
Additionally, use _cansleep version to make things work with i2c-gpio
and other sleeping gpio drivers.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Possible values of sensing_mode are encoded with strings and actual
strings used are not obvious.
Provide a hint by enabling in_voltage_sensing_mode_available attribute.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Currently, driver generates events for channels if new reading differs
from previous one. This "previous value" is initialized to zero, which
results into event if value is constant-one.
Fix that by initializing "previous value" by reading at event enable
time.
This provides reliable sequence for userspace:
- enable event,
- AFTER THAT read current value,
- AFTER THAT each event will correspond to change.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
With current event-only driver, it is not possible for user space
application to know current senses if they don't change since
application starts.
Address that by adding raw access to channels.
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
On rdma read errors, release the sq ref that was taken
when the req was initialized. This avoids a hang in
nvmet_sq_destroy() when the queue is being freed.
Signed-off-by: Vijay Immanuel <vijayi@attalasystems.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Per the recommendation by Sagi on:
http://lists.infradead.org/pipermail/linux-nvme/2017-April/009261.html
Rather than waiting for reset work thread to stop queues and abort the ios,
immediately stop the queues on error detection. Reset thread will restop
the queues (as it's called on other paths), but it does not appear to have
a side effect.
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
In order to create an association, the remoteport must be
serving either a target role or a discovery role.
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
FC Port roles is a bit mask, not individual values.
Correct nvme definitions to unique bits.
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
CMB doesn't get unmapped until removal while getting remapped on every
reset. Add the unmapping and sysfs file removal to the reset path in
nvme_pci_disable to match the mapping path in nvme_pci_enable.
Fixes: 202021c1a ("nvme : Add sysfs entry for NVMe CMBs when appropriate")
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Acked-by: Keith Busch <keith.busch@intel.com>
Reviewed-By: Stephen Bates <sbates@raithlin.com>
Cc: <stable@vger.kernel.org> # 4.9+
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
This fixes the following warning when building with clang:
drivers/iio/light/isl29018.c:808:36: error: variable
'isl29018_acpi_match' is not needed and will not be emitted
[-Werror,-Wunneeded-internal-declaration]
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Here are a number of staging driver fixes for 4.12-rc2
Most of them are typec driver fixes found by reviewers and users of the
code. There are also some removals of files no longer needed in the
tree due to the ion driver rewrite in 4.12-rc1, as well as some wifi
driver fixes. And to round it out, a MAINTAINERS file update.
All have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are a number of staging driver fixes for 4.12-rc2
Most of them are typec driver fixes found by reviewers and users of
the code. There are also some removals of files no longer needed in
the tree due to the ion driver rewrite in 4.12-rc1, as well as some
wifi driver fixes. And to round it out, a MAINTAINERS file update.
All have been in linux-next with no reported issues"
* tag 'staging-4.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (22 commits)
MAINTAINERS: greybus-dev list is members-only
staging: fsl-dpaa2/eth: add ETHERNET dependency
staging: typec: fusb302: refactor resume retry mechanism
staging: typec: fusb302: reset i2c_busy state in error
staging: rtl8723bs: remove re-positioned call to kfree in os_dep/ioctl_cfg80211.c
staging: rtl8192e: GetTs Fix invalid TID 7 warning.
staging: rtl8192e: rtl92e_get_eeprom_size Fix read size of EPROM_CMD.
staging: rtl8192e: fix 2 byte alignment of register BSSIDR.
staging: rtl8192e: rtl92e_fill_tx_desc fix write to mapped out memory.
staging: vc04_services: Fix bulk cache maintenance
staging: ccree: remove extraneous spin_unlock_bh() in error handler
staging: typec: Fix sparse warnings about incorrect types
staging: typec: fusb302: do not free gpio from managed resource
staging: typec: tcpm: Fix Port Power Role field in PS_RDY messages
staging: typec: tcpm: Respond to Discover Identity commands
staging: typec: tcpm: Set correct flags in PD request messages
staging: typec: tcpm: Drop duplicate PD messages
staging: typec: fusb302: Fix chip->vbus_present init value
staging: typec: fusb302: Fix module autoload
staging: typec: tcpci: declare private structure as static
...
Here are a number of small USB fixes for 4.12-rc2
Most of them come from Johan, in his valiant quest to fix up all drivers
that could be affected by "malicious" USB devices. There's also some
fixes for more "obscure" drivers to handle some of the vmalloc stack
fallout (which for USB drivers, was always the case, but very few people
actually ran those systems...)
Other than that, the normal set of xhci and gadget and musb driver fixes
as well.
All have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are a number of small USB fixes for 4.12-rc2
Most of them come from Johan, in his valiant quest to fix up all
drivers that could be affected by "malicious" USB devices. There's
also some fixes for more "obscure" drivers to handle some of the
vmalloc stack fallout (which for USB drivers, was always the case, but
very few people actually ran those systems...)
Other than that, the normal set of xhci and gadget and musb driver
fixes as well.
All have been in linux-next with no reported issues"
* tag 'usb-4.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (42 commits)
usb: musb: tusb6010_omap: Do not reset the other direction's packet size
usb: musb: Fix trying to suspend while active for OTG configurations
usb: host: xhci-plat: propagate return value of platform_get_irq()
xhci: Fix command ring stop regression in 4.11
xhci: remove GFP_DMA flag from allocation
USB: xhci: fix lock-inversion problem
usb: host: xhci-ring: don't need to clear interrupt pending for MSI enabled hcd
usb: host: xhci-mem: allocate zeroed Scratchpad Buffer
xhci: apply PME_STUCK_QUIRK and MISSING_CAS quirk for Denverton
usb: xhci: trace URB before giving it back instead of after
USB: serial: qcserial: add more Lenovo EM74xx device IDs
USB: host: xhci: use max-port define
USB: hub: fix SS max number of ports
USB: hub: fix non-SS hub-descriptor handling
USB: hub: fix SS hub-descriptor handling
USB: usbip: fix nonconforming hub descriptor
USB: gadget: dummy_hcd: fix hub-descriptor removable fields
doc-rst: fixed kernel-doc directives in usb/typec.rst
USB: core: of: document reference taken by companion helper
USB: ehci-platform: fix companion-device leak
...
Here are 5 small bugfixes for reported issues with 4.12-rc1 and earlier
kernels. Nothing huge here, just a lp, mem, vpd, and uio driver fix,
along with a Kconfig fixup for one of the misc drivers.
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are five small bugfixes for reported issues with 4.12-rc1 and
earlier kernels. Nothing huge here, just a lp, mem, vpd, and uio
driver fix, along with a Kconfig fixup for one of the misc drivers.
All of these have been in linux-next with no reported issues"
* tag 'char-misc-4.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
firmware: Google VPD: Fix memory allocation error handling
drivers: char: mem: Check for address space wraparound with mmap()
uio: fix incorrect memory leak cleanup
misc: pci_endpoint_test: select CRC32
char: lp: fix possible integer overflow in lp_setup()
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Merge tag 'drm-fixes-for-v4.12-rc2' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Mostly nouveau and i915, fairly quiet as usual for rc2"
* tag 'drm-fixes-for-v4.12-rc2' of git://people.freedesktop.org/~airlied/linux:
drm/atmel-hlcdc: Fix output initialization
gpu: host1x: select IOMMU_IOVA
drm/nouveau/fifo/gk104-: Silence a locking warning
drm/nouveau/secboot: plug memory leak in ls_ucode_img_load_gr() error path
drm/nouveau: Fix drm poll_helper handling
drm/i915: don't do allocate_va_range again on PIN_UPDATE
drm/i915: Fix rawclk readout for g4x
drm/i915: Fix runtime PM for LPE audio
drm/i915/glk: Fix DSI "*ERROR* ULPS is still active" messages
drm/i915/gvt: avoid unnecessary vgpu switch
drm/i915/gvt: not to restore in-context mmio
drm/etnaviv: don't put fence in case of submit failure
drm/i915/gvt: fix typo: "supporte" -> "support"
drm: hdlcd: Fix the calculation of the scanout start address
The arm64 H5 and arm H3 SoCs share roughly the same base, and therefore
share a significant part of their device tree.
The approach we took was to add a symlink from the arm64 DTSI to the arm
DTSI.
Now that the arm DT folder is exposed in the include path, we can just use
it and remove our symlink.
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This is the first sweep of mostly minor fixes. There's one security
one: the read past the end of a buffer in qedf, and a panic fix for
lpfc SLI-3 adapters, but the rest are a set of include and build
dependency tidy ups and assorted other small fixes and updates.
Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is the first sweep of mostly minor fixes. There's one security
one: the read past the end of a buffer in qedf, and a panic fix for
lpfc SLI-3 adapters, but the rest are a set of include and build
dependency tidy ups and assorted other small fixes and updates"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: pmcraid: remove redundant check to see if request_size is less than zero
scsi: lpfc: ensure els_wq is being checked before destroying it
scsi: cxlflash: Select IRQ_POLL
scsi: qedf: Avoid reading past end of buffer
scsi: qedf: Cleanup the type of io_log->op
scsi: lpfc: double lock typo in lpfc_ns_rsp()
scsi: qedf: properly update arguments position in function call
scsi: scsi_lib: Add #include <scsi/scsi_transport.h>
scsi: MAINTAINERS: update OSD entries
scsi: Skip deleted devices in __scsi_device_lookup
scsi: lpfc: Fix panic on BFS configuration
scsi: libfc: do not flood console with messages 'libfc: queue full ...'
Pull libnvdimm fixes from Dan Williams:
"A couple of compile fixes.
With the removal of the ->direct_access() method from
block_device_operations in favor of a new dax_device + dax_operations
we broke two configurations.
The CONFIG_BLOCK=n case is fixed by compiling out the block+dax
helpers in the dax core. Configurations with FS_DAX=n EXT4=y / XFS=y
and DAX=m fail due to the helpers the builtin filesystem needs being
in a module, so we stub out the helpers in the FS_DAX=n case."
* 'libnvdimm-for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
dax, xfs, ext4: compile out iomap-dax paths in the FS_DAX=n case
dax: fix false CONFIG_BLOCK dependency
Pull i2c fix from Wolfram Sang:
"A regression fix for I2C that would be great to have in rc2"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: designware: don't infer timings described by ACPI from clock rate
Including:
* Another compile-fix as a fallout of the recent header-file
cleanup
* Add a missing IO/TLB flush to the Intel VT-d kdump code path
* A fix for ARM64 dma code to only access initialized
iova_domain members
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Merge tag 'iommu-fixes-v4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
- another compile-fix as a fallout of the recent header-file cleanup
- add a missing IO/TLB flush to the Intel VT-d kdump code path
- a fix for ARM64 dma code to only access initialized iova_domain
members
* tag 'iommu-fixes-v4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/mediatek: Include linux/dma-mapping.h
iommu/vt-d: Flush the IOTLB to get rid of the initial kdump mappings
iommu/dma: Don't touch invalid iova_domain members
Iyappan Subramanian says:
====================
Check all RGMII phy mode variants
This patch set,
- adds phy_interface_mode_is_rgmii() helper function
- addresses review comment from previous patch set, by calling
phy_interface_mode_is_rgmii() to address all RGMII variants
v2: Address review comments from v1
- adds phy_interface_mode_is_rgmii() helper function
- addresses review comment from previous patch set, by calling
phy_interface_mode_is_rgmii() to address all RGMII variants
v1:
- Initial version
====================
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch addresses the review comment from the previous patch set,
by using phy_interface_mode_is_rgmii() helper function to address
all RGMII phy mode variants.
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: Quan Nguyen <qnguyen@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Added helper function that checks phy_mode is RGMII (all variants)
'bool phy_interface_mode_is_rgmii(phy_interface_t mode)'
Changed the following function, to use the above.
'bool phy_interface_is_rgmii(struct phy_device *phydev)'
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Suggested-by: Florian Fainelli <f.fainelli@gmail.com>
Suggested-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Davide Caratti says:
====================
net: fix CRC32c in the forwarding path
Current kernel allows offloading CRC32c computation when SCTP packets
are generated, setting skb->ip_summed to CHECKSUM_PARTIAL, if the
underlying device features have NETIF_F_SCTP_CRC set. However, after these
packets are forwarded, they may land on a device where CRC32c offloading is
not available: as a consequence, transmission is done with wrong CRC32c.
It's not possible to use sctp_compte_cksum() in the forwarding path
and in most drivers, because it needs symbols exported by libcrc32c module.
Patch 1 and 2 of this series try to solve this problem, introducing a new
helper function, namely skb_crc32c_csum_help(), that can be used to resolve
CHECKSUM_PARTIAL when crc32c is needed instead of Internet Checksum.
Currently, we need to parse the packet headers to understand what algorithm
is needed to resolve CHECKSUM_PARTIAL. We can speedup things by storing
this information in the skb metadata, and use it to call an appropriate
helper (skb_checksum_help or skb_crc32c_csum_help), or leave the packet
unmodified when the NIC is able to offload the checksum computation.
Patch 3 deprecates skb->csum_bad to free one bit in skb metadata; patch 4
introduces skb->csum_not_inet, providing skb with an indication on the
algorithm needed to resolve CHECKSUM_PARTIAL.
Patch 5 and 6 fix the kernel forwarding path and openvswitch datapath,
where skb_checksum_help was unconditionally called to resolve CHECKSUM_PARTIAL,
thus generating wrong CRC32c in forwarded SCTP packets.
Finally, patch 7 updates documentation to provide a better description of
possible values of skb->ip_summed.
Some further work is still possible:
* drivers that parse the packet header to correctly resolve CHECKSUM_PARTIAL
(e.g. ixgbe_tx_csum()) can benefit from testing skb->csum_not_inet to avoid
calling ip_hdr(skb)->protocol or ixgbe_ipv6_csum_is_sctp(skb).
* drivers that call skb_checksum_help() to resolve CHECKSUM_PARTIAL can
call skb_csum_hwoffload_help to avoid corrupting SCTP packets.
Changes v2->v3:
- patch 1/7: more standard declaration of stub variables
Changes v1->v2:
- none
Changes RFCv4->v1:
- patch 2/7: use WARN_ON_ONCE() instead of BUG_ON(), and avoid computing
CRC32c on the error path.
- patch 3/7: don't invert tests on the values of same_flow and
NAPI_GRO_CB(skb)->flush in dev_gro_receive(), it's useless and it breaks
GRO functionality as reported by kernel test robot.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Add FCoE to the list of protocols that can set CHECKSUM_UNNECESSARY; add a
note to CHECKSUM_COMPLETE section to specify that it does not apply to SCTP
and FCoE protocols.
Suggested-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Acked-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
if skb carries an SCTP packet and ip_summed is CHECKSUM_PARTIAL, it needs
CRC32c in place of Internet Checksum: use skb_csum_hwoffload_help to avoid
corrupting such packets while queueing them towards userspace.
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
skb_csum_hwoffload_help() uses netdev features and skb->csum_not_inet to
determine if skb needs software computation of Internet Checksum or crc32c
(or nothing, if this computation can be done by the hardware). Use it in
place of skb_checksum_help() in validate_xmit_skb() to avoid corruption
of non-GSO SCTP packets having skb->ip_summed equal to CHECKSUM_PARTIAL.
While at it, remove references to skb_csum_off_chk* functions, since they
are not present anymore in Linux _ see commit cf53b1da73 ("Revert
"net: Add driver helper functions to determine checksum offloadability"").
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
skb->csum_not_inet carries the indication on which algorithm is needed to
compute checksum on skb in the transmit path, when skb->ip_summed is equal
to CHECKSUM_PARTIAL. If skb carries a SCTP packet and crc32c hasn't been
yet written in L4 header, skb->csum_not_inet is assigned to 1; otherwise,
assume Internet Checksum is needed and thus set skb->csum_not_inet to 0.
Suggested-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Acked-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This bit was introduced with commit 5a21232983 ("net: Support for
csum_bad in skbuff") to reduce the stack workload when processing RX
packets carrying a wrong Internet Checksum. Up to now, only one driver and
GRO core are setting it.
Suggested-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
skb_crc32c_csum_help is like skb_checksum_help, but it is designed for
checksumming SCTP packets using crc32c (see RFC3309), provided that
libcrc32c.ko has been loaded before. In case libcrc32c is not loaded,
invoking skb_crc32c_csum_help on a skb results in one the following
printouts:
warn_crc32c_csum_update: attempt to compute crc32c without libcrc32c.ko
warn_crc32c_csum_combine: attempt to compute crc32c without libcrc32c.ko
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
sctp_compute_checksum requires crc32c symbol (provided by libcrc32c), so
it can't be used in net core. Like it has been done previously with other
symbols (e.g. ipv6_dst_lookup), introduce a stub struct skb_checksum_ops
to allow computation of crc32c checksum in net core after sctp.ko (and thus
libcrc32c) has been loaded.
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add reference to the Mali GPU device tree node on rk3288-veyron.
Tested on Minnie and Jerry boards.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Add reference to the Mali GPU device tree node on rk3288-firefly.
Tested on Firefly board.
Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Add reference to the Mali GPU device tree node on the
rk3288-rock2-som platform. Tested on a Radxa Rock2 Square board.
Signed-off-by: Guillaume Tucker <guillaume.tucker@collabora.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
ARM:
- A fix for a build failure introduced in -rc1 when tracepoints are
enabled on 32-bit ARM.
- Disabling use of stack pointer protection in the hyp code which can
cause panics.
- A handful of VGIC fixes.
- A fix to the init of the redistributors on GICv3 systems that
prevented boot with kvmtool on GICv3 systems introduced in -rc1.
- A number of race conditions fixed in our MMU handling code.
- A fix for the guest being able to program the debug extensions for
the host on the 32-bit side.
PPC:
- Fixes for build failures with PR KVM configurations.
- A fix for a host crash that can occur on POWER9 with radix guests.
x86:
- Fixes for nested PML and nested EPT.
- A fix for crashes caused by reserved bits in SSE MXCSR that could
have been set by userspace.
- An optimization of halt polling that fixes high CPU overhead.
- Fixes for four reports from Dan Carpenter's static checker.
- A protection around code that shouldn't have been preemptible.
- A fix for port IO emulation.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Radim Krčmář:
"ARM:
- a fix for a build failure introduced in -rc1 when tracepoints are
enabled on 32-bit ARM.
- disable use of stack pointer protection in the hyp code which can
cause panics.
- a handful of VGIC fixes.
- a fix to the init of the redistributors on GICv3 systems that
prevented boot with kvmtool on GICv3 systems introduced in -rc1.
- a number of race conditions fixed in our MMU handling code.
- a fix for the guest being able to program the debug extensions for
the host on the 32-bit side.
PPC:
- fixes for build failures with PR KVM configurations.
- a fix for a host crash that can occur on POWER9 with radix guests.
x86:
- fixes for nested PML and nested EPT.
- a fix for crashes caused by reserved bits in SSE MXCSR that could
have been set by userspace.
- an optimization of halt polling that fixes high CPU overhead.
- fixes for four reports from Dan Carpenter's static checker.
- a protection around code that shouldn't have been preemptible.
- a fix for port IO emulation"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (27 commits)
KVM: x86: prevent uninitialized variable warning in check_svme()
KVM: x86/vPMU: fix undefined shift in intel_pmu_refresh()
KVM: x86: zero base3 of unusable segments
KVM: X86: Fix read out-of-bounds vulnerability in kvm pio emulation
KVM: x86: Fix potential preemption when get the current kvmclock timestamp
KVM: Silence underflow warning in avic_get_physical_id_entry()
KVM: arm/arm64: Hold slots_lock when unregistering kvm io bus devices
KVM: arm/arm64: Fix bug when registering redist iodevs
KVM: x86: lower default for halt_poll_ns
kvm: arm/arm64: Fix use after free of stage2 page table
kvm: arm/arm64: Force reading uncached stage2 PGD
KVM: nVMX: fix EPT permissions as reported in exit qualification
KVM: VMX: Don't enable EPT A/D feature if EPT feature is disabled
KVM: x86: Fix load damaged SSEx MXCSR register
kvm: nVMX: off by one in vmx_write_pml_buffer()
KVM: arm: rename pm_fake handler to trap_raz_wi
KVM: arm: plug potential guest hardware debug leakage
kvm: arm/arm64: Fix race in resetting stage2 PGD
KVM: arm/arm64: vgic-v3: Use PREbits to infer the number of ICH_APxRn_EL2 registers
KVM: arm/arm64: vgic-v3: Do not use Active+Pending state for a HW interrupt
...
