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Convert the remaining %pf users to %ps to prepare for the removal of the
old %pf conversion specifier support.
Fixes: 323506644972 ("scsi: lpfc: Migrate to %px and %pf in kernel print calls")
Link: https://lore.kernel.org/r/20190904160423.3865-1-sakari.ailus@linux.intel.com
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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This is a fairly complete description of an OLPC XO 1.75 laptop.
What's missing for now is the GPU, LCD controller, DCON, the panel and
audio.
The machine is booted with OpenFirmware and thus has a devicetree.
However, older versions are unable to create a valid FDT and don't
follow the Linux bindings. Having an device tree in the kernel tree
makes it easier to use mainline kernels on such machines, test changes
with CONFIG_ARM_APPENDED_DTB and give a good reference on what bindings
are used on the machine without an access to one.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Pavel Machek <pavel@ucw.cz>
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This device is not an OTG phy, it's a regular USB HS phy. Follow the
generic node name recommendation, and rename it to "usb-phy".
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Pavel Machek <pavel@ucw.cz>
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This makes the 8250_of driver happy. There are two more drivers in the
tree that bind to mrvl,mmp-uart compatibles: pxa and 8250_pxa and
neither of them requires the reg-shift property, assuming it's always 2.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Pavel Machek <pavel@ucw.cz>
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Supported by the mmp-camera driver.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Pavel Machek <pavel@ucw.cz>
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The SPI bus has a single address cell and not size cells.
Also, dtc thinks the SPI nodes are preferrably called "spi" and it is
right to think so.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Pavel Machek <pavel@ucw.cz>
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A missing space before a curly brace.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Pavel Machek <pavel@ucw.cz>
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Matt bisected a sparc64 specific issue with semctl, shmctl and msgctl
to a commit from my y2038 series in linux-5.1, as I missed the custom
sys_ipc() wrapper that sparc64 uses in place of the generic version that
I patched.
The problem is that the sys_{sem,shm,msg}ctl() functions in the kernel
now do not allow being called with the IPC_64 flag any more, resulting
in a -EINVAL error when they don't recognize the command.
Instead, the correct way to do this now is to call the internal
ksys_old_{sem,shm,msg}ctl() functions to select the API version.
As we generally move towards these functions anyway, change all of
sparc_ipc() to consistently use those in place of the sys_*() versions,
and move the required ksys_*() declarations into linux/syscalls.h
The IS_ENABLED(CONFIG_SYSVIPC) check is required to avoid link
errors when ipc is disabled.
Reported-by: Matt Turner <mattst88@gmail.com>
Fixes: 275f22148e87 ("ipc: rename old-style shmctl/semctl/msgctl syscalls")
Cc: stable@vger.kernel.org
Tested-by: Matt Turner <mattst88@gmail.com>
Tested-by: Anatoly Pugachev <matorola@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Link: https://lore.kernel.org/r/20190830222402.23688-7-hmadhani@marvell.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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On fast cable pull, where driver is unable to detect device has disappeared
and came back based on switch info, qla2xxx would not re-login while remote
port has already invalidated the session. This causes IO timeout. This
patch would relogin to remote device for RSCN affected port.
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Link: https://lore.kernel.org/r/20190830222402.23688-6-hmadhani@marvell.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Login session was stucked on cable pull. When FW is in the middle PRLI
PENDING + driver is in Initiator mode, driver fails to check back with FW to
see if the PRLI has completed. This patch would re-check with FW again to
make sure PRLI would complete before pushing forward with relogin.
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Link: https://lore.kernel.org/r/20190830222402.23688-5-hmadhani@marvell.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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HINT_MBX_INT_PENDING is not guaranteed to be cleared by firmware. Remove
check that prevent driver load with ISP82XX.
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Link: https://lore.kernel.org/r/20190830222402.23688-4-hmadhani@marvell.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Use adapter specific callback to read flash instead of ISP adapter
specific.
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Link: https://lore.kernel.org/r/20190830222402.23688-3-hmadhani@marvell.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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This patch updates log message which indicates number of vectors used by
the driver instead of displaying failure to get maximum requested
vectors. Driver will always request maximum vectors during
initialization. In the event driver is not able to get maximum requested
vectors, it will adjust the allocated vectors. This is normal and does not
imply failure in driver.
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Link: https://lore.kernel.org/r/20190830222402.23688-2-hmadhani@marvell.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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For commands completing with a resid not aligned on the device logical
sector size, also print the command CDB in addition to the current message
to help debug hardware generating such incorrect command completion
information.
Link: https://lore.kernel.org/r/20190828053511.14818-1-damien.lemoal@wdc.com
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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pci_alloc_irq_vectors() returns number of vectors allocated. Fix the check
for error condition.
Fixes: cca678dfbad49 ("scsi: fnic: switch to pci_alloc_irq_vectors")
Link: https://lore.kernel.org/r/20190827211340.1095-1-gvaradar@cisco.com
Signed-off-by: Govindarajulu Varadarajan <gvaradar@cisco.com>
Acked-by: Satish Kharat <satishkh@cisco.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull Documentation updates from Greg KH:
"A few small patches for the documenation file that came in through the
char-misc tree in -rc7 for your tree.
They fix the mistake in the .rst format that kept the table of
companies from showing up in the html output, and most importantly,
add people's names to the list showing support for our process"
* tag 'char-misc-5.3-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
Documentation/process: Add Qualcomm process ambassador for hardware security issues
Documentation/process/embargoed-hardware-issues: Microsoft ambassador
Documentation/process: Add Google contact for embargoed hardware issues
Documentation/process: Volunteer as the ambassador for Xen
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cpumasks are allocated by calling the alloc_cpu_mask() function and are
never free'd. They should be free'd after the commands have run.
Fix the memory leaks by calling free_cpu_set().
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: David Arcari <darcari@redhat.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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Command output has confusing data, returning "0" on success. For example
|# ./intel-speed-select -c 14 turbo-freq enable
Intel(R) Speed Select Technology
Executing on CPU model:106[0x6a]
package-1
die-0
cpu-14
turbo-freq
enable:0
To avoid confusion change the command output to 'success' or 'failed'.
v2: Remove help output line.
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: David Arcari <darcari@redhat.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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The intel-speed-select tool currently only outputs a hexidecimal CPU mask,
which requires translation for use with kernel parameters such as
isolcpus.
Along with the CPU mask, output a human readable CPU list.
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: David Arcari <darcari@redhat.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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turbo frequency
The intel-speed-select tool currently outputs the turbo ratio for every
bucket. Make the output more user-friendly by changing the output to the
maximum turbo frequency.
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: David Arcari <darcari@redhat.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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These features are introduced on new processors that will never operate
in the KHz range.
Save some zeros and switch the output to MHz.
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: David Arcari <darcari@redhat.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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The current output of 'intel-speed-select -c 53 perf-profile info -l 0'
shows
speed-select-turbo-freq-support:1
speed-select-base-freq-support:1
speed-select-base-freq-enabled:0
speed-select-turbo-freq-enabled:0
Simplify the output to single lines displaying status of disabled,
enabled, and unsupported.
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: David Arcari <darcari@redhat.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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I have a system with 28 threads/socket but intel-speed-select reports
a cpu-count of 29.
Fix an off-by-one error in the cpu_count() function.
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: David Arcari <darcari@redhat.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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Help is -h, not --h.
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: David Arcari <darcari@redhat.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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packag_ should be package_.
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: David Arcari <darcari@redhat.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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isst_set_tdp_level_msr()
The isst_send_msr_command() function will read 8 bytes but we are
passing an address to an int (4 bytes) so it results in a read overflow.
Fixes: 3fb4f7cd472c ("tools/power/x86: A tool to validate Intel Speed Select commands")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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Use device_init_wakeup and pm_wakeup_hard_event instead of directly
calling pm_system_wakeup(). This is the preferred way to do this and
this will allow the user to disable wakeup through INT0002 events
through sysfs.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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Commit 871f1f2bcb01 ("platform/x86: intel_int0002_vgpio: Only implement
irq_set_wake on Bay Trail") removed the irq_set_wake method from the
struct irq_chip used on Cherry Trail, but it did not set
IRQCHIP_SKIP_SET_WAKE causing kernel/irq/manage.c: set_irq_wake_real()
to return -ENXIO.
This causes the kernel to no longer see PME events reported through the
INT0002 device as wakeup events. Which e.g. breaks wakeup by the (USB)
keyboard on many Cherry Trail 2-in-1 devices.
Cc: stable@vger.kernel.org
Fixes: 871f1f2bcb01 ("platform/x86: intel_int0002_vgpio: Only implement irq_set_wake on Bay Trail")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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In function ec_read_u8(), variable "value" could be uninitialized
if ec_read() fails. However, "value" is returned directly and used
in its callers. This is potentially unsafe.
Signed-off-by: Yizhuo <yzhai003@ucr.edu>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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Add touchscreen info for the Trekstor Primebook C11B 2-in-1, note the C11B
used the same touchscreen as the regular C11, so we only add a new DMI
match.
Cc: Thomas Hiller <thomas.hiller@gmx.de>
Reported-and-tested-by: Thomas Hiller <thomas.hiller@gmx.de>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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This feature is found optionally in T480s, T490, T490s.
The feature is called lcdshadow and visible via
/proc/acpi/ibm/lcdshadow.
The ACPI methods \_SB.PCI0.LPCB.EC.HKEY.{GSSS,SSSS,TSSS,CSSS} are
available in these machines. They get, set, toggle or change the state
apparently.
The patch was tested on a 5.0 series kernel on a T480s.
Signed-off-by: Alexander Schremmer <alex@alexanderweb.de>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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The SIMATIC IPC227E uses the PMC clock for on-board components and gets
stuck during boot if the clock is disabled. Therefore, add this device
to the critical systems list.
Fixes: 648e921888ad ("clk: x86: Stop marking clocks as CLK_IS_CRITICAL")
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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issues
Add Trilok Soni as process ambassador for hardware security issues
from Qualcomm.
Signed-off-by: Trilok Soni <tsoni@codeaurora.org>
Link: https://lore.kernel.org/r/1567796517-8964-1-git-send-email-tsoni@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Pull dmaengine fixes from Vinod Koul:
"Some late fixes for drivers:
- memory leak in ti crossbar dma driver
- cleanup of omap dma probe
- Fix for link list configuration in sprd dma driver
- Handling fixed for DMACHCLR if iommu is mapped in rcar dma"
* tag 'dmaengine-fix-5.3' of git://git.infradead.org/users/vkoul/slave-dma:
dmaengine: rcar-dmac: Fix DMACHCLR handling if iommu is mapped
dmaengine: sprd: Fix the DMA link-list configuration
dmaengine: ti: omap-dma: Add cleanup in omap_dma_probe()
dmaengine: ti: dma-crossbar: Fix a memory leak bug
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Prior to this commit, removing the intel_pmc_core_pltdrv module
would cause the following warning:
Device 'intel_pmc_core.0' does not have a release() function, it is broken and must be fixed. See Documentation/kobject.txt.
WARNING: CPU: 0 PID: 2202 at drivers/base/core.c:1238 device_release+0x6f/0x80
This commit hence adds an empty release function for the driver.
Signed-off-by: M. Vefa Bicakci <m.v.b@runbox.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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On a Xen-based PVH virtual machine with more than 4 GiB of RAM,
intel_pmc_core fails initialization with the following warning message
from the kernel, indicating that the driver is attempting to ioremap
RAM:
ioremap on RAM at 0x00000000fe000000 - 0x00000000fe001fff
WARNING: CPU: 1 PID: 434 at arch/x86/mm/ioremap.c:186 __ioremap_caller.constprop.0+0x2aa/0x2c0
...
Call Trace:
? pmc_core_probe+0x87/0x2d0 [intel_pmc_core]
pmc_core_probe+0x87/0x2d0 [intel_pmc_core]
This issue appears to manifest itself because of the following fallback
mechanism in the driver:
if (lpit_read_residency_count_address(&slp_s0_addr))
pmcdev->base_addr = PMC_BASE_ADDR_DEFAULT;
The validity of address PMC_BASE_ADDR_DEFAULT (i.e., 0xFE000000) is not
verified by the driver, which is what this patch introduces. With this
patch, if address PMC_BASE_ADDR_DEFAULT is in RAM, then the driver will
not attempt to ioremap the aforementioned address.
Signed-off-by: M. Vefa Bicakci <m.v.b@runbox.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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This error handling is reversed so we return early.
Fixes: 84d8e80b0a36 ("platform/x86: asus-wmi: Refactor charge_threshold_store()")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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Jakub Kicinski says:
====================
net/tls: small TX offload optimizations
This set brings small TLS TX device optimizations. The biggest
gain comes from fixing a misuse of non temporal copy instructions.
On a synthetic workload modelled after customer's RFC application
I see 3-5% percent gain.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Unlike normal TCP code TLS has to touch the cache lines
it copies into to fill header info. On memory-heavy workloads
having non temporal stores and normal accesses targeting
the same cache line leads to significant overhead.
Measured 3% overhead running 3600 round robin connections
with additional memory heavy workload.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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For TLS device offload the tag/message authentication code are
filled in by the device. The kernel merely reserves space for
them. Because device overwrites it, the contents of the tag make
do no matter. Current code tries to save space by reusing the
header as the tag. This, however, leads to an additional frag
being created and defeats buffer coalescing (which trickles
all the way down to the drivers).
Remove this optimization, and try to allocate the space for
the tag in the usual way, leave the memory uninitialized.
If memory allocation fails rewind the record pointer so that
we use the already copied user data as tag.
Note that the optimization was actually buggy, as the tag
for TLS 1.2 is 16 bytes, but header is just 13, so the reuse
may had looked past the end of the page..
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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All modifications to TLS record list happen under the socket
lock. Since records form an ordered queue readers are only
concerned about elements being removed, additions can happen
concurrently.
Use RCU primitives to ensure the correct access types
(READ_ONCE/WRITE_ONCE).
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It's generally more cache friendly to walk arrays in order,
especially those which are likely not in cache.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next
Johan Hedberg says:
====================
pull request: bluetooth-next 2019-09-06
Here's the main bluetooth-next pull request for the 5.4 kernel.
- Cleanups & fixes to btrtl driver
- Fixes for Realtek devices in btusb, e.g. for suspend handling
- Firmware loading support for BCM4345C5
- hidp_send_message() return value handling fixes
- Added support for utilizing Fast Advertising Interval
- Various other minor cleanups & fixes
Please let me know if there are any issues pulling. Thanks.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Flower control message replies are handled in different locations. The truly
high priority replies are handled in the BH (tasklet) context, while the
remaining replies are handled in a predefined Linux work queue. The work
queue handler orders replies into high and low priority groups, and always
start servicing the high priority replies within the received batch first.
Reply Type: Rtnl Lock: Handler:
CMSG_TYPE_PORT_MOD no BH tasklet (mtu)
CMSG_TYPE_TUN_NEIGH no BH tasklet
CMSG_TYPE_FLOW_STATS no BH tasklet
CMSG_TYPE_PORT_REIFY no WQ high
CMSG_TYPE_PORT_MOD yes WQ high (link/mtu)
CMSG_TYPE_MERGE_HINT yes WQ low
CMSG_TYPE_NO_NEIGH no WQ low
CMSG_TYPE_ACTIVE_TUNS no WQ low
CMSG_TYPE_QOS_STATS no WQ low
CMSG_TYPE_LAG_CONFIG no WQ low
A subset of control messages can block waiting for an rtnl lock (from both
work queue priority groups). The rtnl lock is heavily contended for by
external processes such as systemd-udevd, systemd-network and libvirtd,
especially during netdev creation, such as when flower VFs and representors
are instantiated.
Kernel netlink instrumentation shows that external processes (such as
systemd-udevd) often use successive rtnl_trylock() sequences, which can result
in an rtnl_lock() blocked control message to starve for longer periods of time
during rtnl lock contention, i.e. netdev creation.
In the current design a single blocked control message will block the entire
work queue (both priorities), and introduce a latency which is
nondeterministic and dependent on system wide rtnl lock usage.
In some extreme cases, one blocked control message at exactly the wrong time,
just before the maximum number of VFs are instantiated, can block the work
queue for long enough to prevent VF representor REIFY replies from getting
handled in time for the 40ms timeout.
The firmware will deliver the total maximum number of REIFY message replies in
around 300us.
Only REIFY and MTU update messages require replies within a timeout period (of
40ms). The MTU-only updates are already done directly in the BH (tasklet)
handler.
Move the REIFY handler down into the BH (tasklet) in order to resolve timeouts
caused by a blocked work queue waiting on rtnl locks.
Signed-off-by: Fred Lotter <frederik.lotter@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Don't populate the array spec_opcode on the stack but instead make it
static const. Makes the object code smaller by 48 bytes.
Before:
text data bss dec hex filename
6914 1040 128 8082 1f92 hns3/hns3vf/hclgevf_cmd.o
After:
text data bss dec hex filename
6866 1040 128 8034 1f62 hns3/hns3vf/hclgevf_cmd.o
(gcc version 9.2.1, amd64)
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Don't populate the arrays on the stack but instead make them
static const. Makes the object code smaller by 281 bytes.
Before:
text data bss dec hex filename
87553 5672 0 93225 16c29 benet/be_cmds.o
After:
text data bss dec hex filename
87112 5832 0 92944 16b10 benet/be_cmds.o
(gcc version 9.2.1, amd64)
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Remove including <linux/version.h> that don't need it.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
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linear-headed frag_list
Historically, support for frag_list packets entering skb_segment() was
limited to frag_list members terminating on exact same gso_size
boundaries. This is verified with a BUG_ON since commit 89319d3801d1
("net: Add frag_list support to skb_segment"), quote:
As such we require all frag_list members terminate on exact MSS
boundaries. This is checked using BUG_ON.
As there should only be one producer in the kernel of such packets,
namely GRO, this requirement should not be difficult to maintain.
However, since commit 6578171a7ff0 ("bpf: add bpf_skb_change_proto helper"),
the "exact MSS boundaries" assumption no longer holds:
An eBPF program using bpf_skb_change_proto() DOES modify 'gso_size', but
leaves the frag_list members as originally merged by GRO with the
original 'gso_size'. Example of such programs are bpf-based NAT46 or
NAT64.
This lead to a kernel BUG_ON for flows involving:
- GRO generating a frag_list skb
- bpf program performing bpf_skb_change_proto() or bpf_skb_adjust_room()
- skb_segment() of the skb
See example BUG_ON reports in [0].
In commit 13acc94eff12 ("net: permit skb_segment on head_frag frag_list skb"),
skb_segment() was modified to support the "gso_size mangling" case of
a frag_list GRO'ed skb, but *only* for frag_list members having
head_frag==true (having a page-fragment head).
Alas, GRO packets having frag_list members with a linear kmalloced head
(head_frag==false) still hit the BUG_ON.
This commit adds support to skb_segment() for a 'head_skb' packet having
a frag_list whose members are *non* head_frag, with gso_size mangled, by
disabling SG and thus falling-back to copying the data from the given
'head_skb' into the generated segmented skbs - as suggested by Willem de
Bruijn [1].
Since this approach involves the penalty of skb_copy_and_csum_bits()
when building the segments, care was taken in order to enable this
solution only when required:
- untrusted gso_size, by testing SKB_GSO_DODGY is set
(SKB_GSO_DODGY is set by any gso_size mangling functions in
net/core/filter.c)
- the frag_list is non empty, its item is a non head_frag, *and* the
headlen of the given 'head_skb' does not match the gso_size.
[0]
https://lore.kernel.org/netdev/20190826170724.25ff616f@pixies/
https://lore.kernel.org/netdev/9265b93f-253d-6b8c-f2b8-4b54eff1835c@fb.com/
[1]
https://lore.kernel.org/netdev/CA+FuTSfVsgNDi7c=GUU8nMg2hWxF2SjCNLXetHeVPdnxAW5K-w@mail.gmail.com/
Fixes: 6578171a7ff0 ("bpf: add bpf_skb_change_proto helper")
Suggested-by: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Alexander Duyck <alexander.duyck@gmail.com>
Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Jose Abreu says:
====================
net: stmmac: Improvements and fixes for -next
Improvements and fixes for recently introduced features. All for -next tree.
More info in commit logs.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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