Since this is a modern-only device,
tag config space fields as having little endian-ness.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Since this is a modern-only device,
tag config space fields as having little endian-ness.
TODO: check other uses of __virtioXX types in this header,
should probably be __leXX.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Since this is a modern-only device,
tag config space fields as having little endian-ness.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Since this is a modern-only device,
tag config space fields as having little endian-ness.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Since gpu is a modern-only device,
tag config space fields as having little endian-ness.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Since fs is a modern-only device,
tag config space fields as having little endian-ness.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Since crypto is a modern-only device,
tag config space fields as having little endian-ness.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Tag config space fields as having virtio endian-ness.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Tag config space fields as having virtio endian-ness.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Tag config space fields as having little endian-ness.
Note that balloon is special: LE even when using
the legacy interface.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Tag config space fields as having virtio endian-ness.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Add the character device interface into remoteproc framework.
This interface can be used in order to boot/shutdown remote
subsystems and provides a basic ioctl based interface to implement
supplementary functionality. An ioctl call is implemented to enable
the shutdown on release feature which will allow remote processors to
be shutdown when the controlling userspace application crashes or hangs.
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org>
Signed-off-by: Siddharth Gupta <sidgup@codeaurora.org>
Link: https://lore.kernel.org/r/1596044401-22083-2-git-send-email-sidgup@codeaurora.org
[bjorn: s/int32_t/s32/ per checkpatch]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Merge tag 'close-range-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull close_range() implementation from Christian Brauner:
"This adds the close_range() syscall. It allows to efficiently close a
range of file descriptors up to all file descriptors of a calling
task.
This is coordinated with the FreeBSD folks which have copied our
version of this syscall and in the meantime have already merged it in
April 2019:
https://reviews.freebsd.org/D21627https://svnweb.freebsd.org/base?view=revision&revision=359836
The syscall originally came up in a discussion around the new mount
API and making new file descriptor types cloexec by default. During
this discussion, Al suggested the close_range() syscall.
First, it helps to close all file descriptors of an exec()ing task.
This can be done safely via (quoting Al's example from [1] verbatim):
/* that exec is sensitive */
unshare(CLONE_FILES);
/* we don't want anything past stderr here */
close_range(3, ~0U);
execve(....);
The code snippet above is one way of working around the problem that
file descriptors are not cloexec by default. This is aggravated by the
fact that we can't just switch them over without massively regressing
userspace. For a whole class of programs having an in-kernel method of
closing all file descriptors is very helpful (e.g. demons, service
managers, programming language standard libraries, container managers
etc.).
Second, it allows userspace to avoid implementing closing all file
descriptors by parsing through /proc/<pid>/fd/* and calling close() on
each file descriptor and other hacks. From looking at various
large(ish) userspace code bases this or similar patterns are very
common in service managers, container runtimes, and programming
language runtimes/standard libraries such as Python or Rust.
In addition, the syscall will also work for tasks that do not have
procfs mounted and on kernels that do not have procfs support compiled
in. In such situations the only way to make sure that all file
descriptors are closed is to call close() on each file descriptor up
to UINT_MAX or RLIMIT_NOFILE, OPEN_MAX trickery.
Based on Linus' suggestion close_range() also comes with a new flag
CLOSE_RANGE_UNSHARE to more elegantly handle file descriptor dropping
right before exec. This would usually be expressed in the sequence:
unshare(CLONE_FILES);
close_range(3, ~0U);
as pointed out by Linus it might be desirable to have this be a part
of close_range() itself under a new flag CLOSE_RANGE_UNSHARE which
gets especially handy when we're closing all file descriptors above a
certain threshold.
Test-suite as always included"
* tag 'close-range-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
tests: add CLOSE_RANGE_UNSHARE tests
close_range: add CLOSE_RANGE_UNSHARE
tests: add close_range() tests
arch: wire-up close_range()
open: add close_range()
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Merge tag 'cap-checkpoint-restore-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull checkpoint-restore updates from Christian Brauner:
"This enables unprivileged checkpoint/restore of processes.
Given that this work has been going on for quite some time the first
sentence in this summary is hopefully more exciting than the actual
final code changes required. Unprivileged checkpoint/restore has seen
a frequent increase in interest over the last two years and has thus
been one of the main topics for the combined containers &
checkpoint/restore microconference since at least 2018 (cf. [1]).
Here are just the three most frequent use-cases that were brought forward:
- The JVM developers are integrating checkpoint/restore into a Java
VM to significantly decrease the startup time.
- In high-performance computing environment a resource manager will
typically be distributing jobs where users are always running as
non-root. Long-running and "large" processes with significant
startup times are supposed to be checkpointed and restored with
CRIU.
- Container migration as a non-root user.
In all of these scenarios it is either desirable or required to run
without CAP_SYS_ADMIN. The userspace implementation of
checkpoint/restore CRIU already has the pull request for supporting
unprivileged checkpoint/restore up (cf. [2]).
To enable unprivileged checkpoint/restore a new dedicated capability
CAP_CHECKPOINT_RESTORE is introduced. This solution has last been
discussed in 2019 in a talk by Google at Linux Plumbers (cf. [1]
"Update on Task Migration at Google Using CRIU") with Adrian and
Nicolas providing the implementation now over the last months. In
essence, this allows the CRIU binary to be installed with the
CAP_CHECKPOINT_RESTORE vfs capability set thereby enabling
unprivileged users to restore processes.
To make this possible the following permissions are altered:
- Selecting a specific PID via clone3() set_tid relaxed from userns
CAP_SYS_ADMIN to CAP_CHECKPOINT_RESTORE.
- Selecting a specific PID via /proc/sys/kernel/ns_last_pid relaxed
from userns CAP_SYS_ADMIN to CAP_CHECKPOINT_RESTORE.
- Accessing /proc/pid/map_files relaxed from init userns
CAP_SYS_ADMIN to init userns CAP_CHECKPOINT_RESTORE.
- Changing /proc/self/exe from userns CAP_SYS_ADMIN to userns
CAP_CHECKPOINT_RESTORE.
Of these four changes the /proc/self/exe change deserves a few words
because the reasoning behind even restricting /proc/self/exe changes
in the first place is just full of historical quirks and tracking this
down was a questionable version of fun that I'd like to spare others.
In short, it is trivial to change /proc/self/exe as an unprivileged
user, i.e. without userns CAP_SYS_ADMIN right now. Either via ptrace()
or by simply intercepting the elf loader in userspace during exec.
Nicolas was nice enough to even provide a POC for the latter (cf. [3])
to illustrate this fact.
The original patchset which introduced PR_SET_MM_MAP had no
permissions around changing the exe link. They too argued that it is
trivial to spoof the exe link already which is true. The argument
brought up against this was that the Tomoyo LSM uses the exe link in
tomoyo_manager() to detect whether the calling process is a policy
manager. This caused changing the exe links to be guarded by userns
CAP_SYS_ADMIN.
All in all this rather seems like a "better guard it with something
rather than nothing" argument which imho doesn't qualify as a great
security policy. Again, because spoofing the exe link is possible for
the calling process so even if this were security relevant it was
broken back then and would be broken today. So technically, dropping
all permissions around changing the exe link would probably be
possible and would send a clearer message to any userspace that relies
on /proc/self/exe for security reasons that they should stop doing
this but for now we're only relaxing the exe link permissions from
userns CAP_SYS_ADMIN to userns CAP_CHECKPOINT_RESTORE.
There's a final uapi change in here. Changing the exe link used to
accidently return EINVAL when the caller lacked the necessary
permissions instead of the more correct EPERM. This pr contains a
commit fixing this. I assume that userspace won't notice or care and
if they do I will revert this commit. But since we are changing the
permissions anyway it seems like a good opportunity to try this fix.
With these changes merged unprivileged checkpoint/restore will be
possible and has already been tested by various users"
[1] LPC 2018
1. "Task Migration at Google Using CRIU"
https://www.youtube.com/watch?v=yI_1cuhoDgA&t=12095
2. "Securely Migrating Untrusted Workloads with CRIU"
https://www.youtube.com/watch?v=yI_1cuhoDgA&t=14400
LPC 2019
1. "CRIU and the PID dance"
https://www.youtube.com/watch?v=LN2CUgp8deo&list=PLVsQ_xZBEyN30ZA3Pc9MZMFzdjwyz26dO&index=9&t=2m48s
2. "Update on Task Migration at Google Using CRIU"
https://www.youtube.com/watch?v=LN2CUgp8deo&list=PLVsQ_xZBEyN30ZA3Pc9MZMFzdjwyz26dO&index=9&t=1h2m8s
[2] https://github.com/checkpoint-restore/criu/pull/1155
[3] https://github.com/nviennot/run_as_exe
* tag 'cap-checkpoint-restore-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
selftests: add clone3() CAP_CHECKPOINT_RESTORE test
prctl: exe link permission error changed from -EINVAL to -EPERM
prctl: Allow local CAP_CHECKPOINT_RESTORE to change /proc/self/exe
proc: allow access in init userns for map_files with CAP_CHECKPOINT_RESTORE
pid_namespace: use checkpoint_restore_ns_capable() for ns_last_pid
pid: use checkpoint_restore_ns_capable() for set_tid
capabilities: Introduce CAP_CHECKPOINT_RESTORE
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Merge tag 'audit-pr-20200803' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
Pull audit updates from Paul Moore:
"Aside from some smaller bug fixes, here are the highlights:
- add a new backlog wait metric to the audit status message, this is
intended to help admins determine how long processes have been
waiting for the audit backlog queue to clear
- generate audit records for nftables configuration changes
- generate CWD audit records for for the relevant LSM audit records"
* tag 'audit-pr-20200803' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
audit: report audit wait metric in audit status reply
audit: purge audit_log_string from the intra-kernel audit API
audit: issue CWD record to accompany LSM_AUDIT_DATA_* records
audit: use the proper gfp flags in the audit_log_nfcfg() calls
audit: remove unused !CONFIG_AUDITSYSCALL __audit_inode* stubs
audit: add gfp parameter to audit_log_nfcfg
audit: log nftables configuration change events
audit: Use struct_size() helper in alloc_chunk
- Improved selftest coverage, timeouts, and reporting
- Add EPOLLHUP support for SECCOMP_RET_USER_NOTIF (Christian Brauner)
- Refactor __scm_install_fd() into __receive_fd() and fix buggy callers
- Introduce "addfd" command for SECCOMP_RET_USER_NOTIF (Sargun Dhillon)
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Merge tag 'seccomp-v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull seccomp updates from Kees Cook:
"There are a bunch of clean ups and selftest improvements along with
two major updates to the SECCOMP_RET_USER_NOTIF filter return:
EPOLLHUP support to more easily detect the death of a monitored
process, and being able to inject fds when intercepting syscalls that
expect an fd-opening side-effect (needed by both container folks and
Chrome). The latter continued the refactoring of __scm_install_fd()
started by Christoph, and in the process found and fixed a handful of
bugs in various callers.
- Improved selftest coverage, timeouts, and reporting
- Add EPOLLHUP support for SECCOMP_RET_USER_NOTIF (Christian Brauner)
- Refactor __scm_install_fd() into __receive_fd() and fix buggy
callers
- Introduce 'addfd' command for SECCOMP_RET_USER_NOTIF (Sargun
Dhillon)"
* tag 'seccomp-v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (30 commits)
selftests/seccomp: Test SECCOMP_IOCTL_NOTIF_ADDFD
seccomp: Introduce addfd ioctl to seccomp user notifier
fs: Expand __receive_fd() to accept existing fd
pidfd: Replace open-coded receive_fd()
fs: Add receive_fd() wrapper for __receive_fd()
fs: Move __scm_install_fd() to __receive_fd()
net/scm: Regularize compat handling of scm_detach_fds()
pidfd: Add missing sock updates for pidfd_getfd()
net/compat: Add missing sock updates for SCM_RIGHTS
selftests/seccomp: Check ENOSYS under tracing
selftests/seccomp: Refactor to use fixture variants
selftests/harness: Clean up kern-doc for fixtures
seccomp: Use -1 marker for end of mode 1 syscall list
seccomp: Fix ioctl number for SECCOMP_IOCTL_NOTIF_ID_VALID
selftests/seccomp: Rename user_trap_syscall() to user_notif_syscall()
selftests/seccomp: Make kcmp() less required
seccomp: Use pr_fmt
selftests/seccomp: Improve calibration loop
selftests/seccomp: use 90s as timeout
selftests/seccomp: Expand benchmark to per-filter measurements
...
Daniel Borkmann says:
====================
pull-request: bpf-next 2020-08-04
The following pull-request contains BPF updates for your *net-next* tree.
We've added 73 non-merge commits during the last 9 day(s) which contain
a total of 135 files changed, 4603 insertions(+), 1013 deletions(-).
The main changes are:
1) Implement bpf_link support for XDP. Also add LINK_DETACH operation for the BPF
syscall allowing processes with BPF link FD to force-detach, from Andrii Nakryiko.
2) Add BPF iterator for map elements and to iterate all BPF programs for efficient
in-kernel inspection, from Yonghong Song and Alexei Starovoitov.
3) Separate bpf_get_{stack,stackid}() helpers for perf events in BPF to avoid
unwinder errors, from Song Liu.
4) Allow cgroup local storage map to be shared between programs on the same
cgroup. Also extend BPF selftests with coverage, from YiFei Zhu.
5) Add BPF exception tables to ARM64 JIT in order to be able to JIT BPF_PROBE_MEM
load instructions, from Jean-Philippe Brucker.
6) Follow-up fixes on BPF socket lookup in combination with reuseport group
handling. Also add related BPF selftests, from Jakub Sitnicki.
7) Allow to use socket storage in BPF_PROG_TYPE_CGROUP_SOCK-typed programs for
socket create/release as well as bind functions, from Stanislav Fomichev.
8) Fix an info leak in xsk_getsockopt() when retrieving XDP stats via old struct
xdp_statistics, from Peilin Ye.
9) Fix PT_REGS_RC{,_CORE}() macros in libbpf for MIPS arch, from Jerry Crunchtime.
10) Extend BPF kernel test infra with skb->family and skb->{local,remote}_ip{4,6}
fields and allow user space to specify skb->dev via ifindex, from Dmitry Yakunin.
11) Fix a bpftool segfault due to missing program type name and make it more robust
to prevent them in future gaps, from Quentin Monnet.
12) Consolidate cgroup helper functions across selftests and fix a v6 localhost
resolver issue, from John Fastabend.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
* ASUS WMI driver honors BAT1 name of the battery
(quite a few new laptops are using it)
* Dell WMI driver supports new key codes and backlight events
* ThinkPad ACPI driver now may use standard charge threshold interface,
it also has been updated to provide Laptop or Desktop mode to the user
* Intel Speed Select Technology gained support on Sapphire Rapids platform
* Regular update of Speed Select Technology tools
* Mellanox has been updated to support complex attributes
* PMC core driver has been fixed to show correct names for LPM0 register
* HTTP links were replaced by HTTPS ones where it applies
* Miscellaneous fixes and cleanups here and there
The following is an automated git shortlog grouped by driver:
acerhdf:
- Replace HTTP links with HTTPS ones
Add new intel_atomisp2_led driver:
- Add new intel_atomisp2_led driver
apple-gmux:
- Replace HTTP links with HTTPS ones
asus-nb-wmi:
- Drop duplicate DMI quirk structures
- add support for ASUS ROG Zephyrus G14 and G15
asus-wmi:
- allow BAT1 battery name
dell-wmi:
- add new dmi mapping for keycode 0xffff
- add new keymap type 0x0012
- add new backlight events
intel_cht_int33fe:
- Drop double check for ACPI companion device
intel-hid:
- Fix return value check in check_acpi_dev()
intel_pmc_core:
- fix bound check in pmc_core_mphy_pg_show()
- update TGL's LPM0 reg bit map name
intel-vbtn:
- Fix return value check in check_acpi_dev()
ISST:
- drop a duplicated word in isst_if.h
- Add new PCI device ids
pcengines-apuv2:
- revert wiring up simswitch GPIO as LED
platform/mellanox:
- Introduce string_upper() and string_lower() helpers
- Add string_upper() and string_lower() tests
- Extend FAN platform data description
- Add more definitions for system attributes
- Add new attribute for mlxreg-io sysfs interfaces
- Add presence register field for FAN devices
- Add support for complex attributes
- mlxreg-io: Add support for complex attributes
- mlxreg-hotplug: Add environmental data to uevent
- mlxreg-hotplug: Use capability register for attribute creation
- mlxreg-hotplug: Modify module license
system76-acpi:
- Fix brightness_set schedule while atomic
thinkpad_acpi:
- Make some symbols static
- add documentation for battery charge control
- use standard charge control attribute names
- remove unused defines
- Replace HTTP links with HTTPS ones
- not loading brightness_init when _BCL invalid
- lap or desk mode interface
- Revert "Use strndup_user() in dispatch_proc_write()"
tools/power/x86/intel-speed-select:
- Update version for v5.9
- Add retries for mail box commands
- Add option to delay mbox commands
- Ignore -o option processing on error
- Change path for caching topology info
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Merge tag 'platform-drivers-x86-v5.9-1' of git://git.infradead.org/linux-platform-drivers-x86
Pull x86 platform driver updates from Andy Shevchenko:
- ASUS WMI driver honors BAT1 name of the battery (quite a few new
laptops are using it)
- Dell WMI driver supports new key codes and backlight events
- ThinkPad ACPI driver now may use standard charge threshold interface,
it also has been updated to provide Laptop or Desktop mode to the
user
- Intel Speed Select Technology gained support on Sapphire Rapids
platform
- Regular update of Speed Select Technology tools
- Mellanox has been updated to support complex attributes
- PMC core driver has been fixed to show correct names for LPM0
register
- HTTP links were replaced by HTTPS ones where it applies
- Miscellaneous fixes and cleanups here and there
* tag 'platform-drivers-x86-v5.9-1' of git://git.infradead.org/linux-platform-drivers-x86: (42 commits)
platform/x86: asus-nb-wmi: Drop duplicate DMI quirk structures
platform/x86: thinkpad_acpi: Make some symbols static
platform/x86: thinkpad_acpi: add documentation for battery charge control
platform/x86: thinkpad_acpi: use standard charge control attribute names
platform/x86: thinkpad_acpi: remove unused defines
platform/x86: ISST: drop a duplicated word in isst_if.h
tools/power/x86/intel-speed-select: Update version for v5.9
tools/power/x86/intel-speed-select: Add retries for mail box commands
tools/power/x86/intel-speed-select: Add option to delay mbox commands
tools/power/x86/intel-speed-select: Ignore -o option processing on error
tools/power/x86/intel-speed-select: Change path for caching topology info
platform/x86: acerhdf: Replace HTTP links with HTTPS ones
platform/x86: apple-gmux: Replace HTTP links with HTTPS ones
platform/x86: pcengines-apuv2: revert wiring up simswitch GPIO as LED
platform/x86: mlx-platform: Extend FAN platform data description
platform_data/mlxreg: Add presence register field for FAN devices
Documentation/ABI: Add new attribute for mlxreg-io sysfs interfaces
platform/mellanox: mlxreg-io: Add support for complex attributes
platform/x86: mlx-platform: Add more definitions for system attributes
platform_data/mlxreg: Add support for complex attributes
...
Refactor the function seg6_lwt_headroom out of the seg6_iptunnel.h uapi
header, because it is only used in seg6_iptunnel.c. Moreover, it is only
used in the kernel code, as indicated by the "#ifdef __KERNEL__".
Suggested-by: David Miller <davem@davemloft.net>
Signed-off-by: Ioana-Ruxandra Stăncioi <stancioi@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira Ayuso says:
====================
Netfilter updates for net-next
1) UAF in chain binding support from previous batch, from Dan Carpenter.
2) Queue up delayed work to expire connections with no destination,
from Andrew Sy Kim.
3) Use fallthrough pseudo-keyword, from Gustavo A. R. Silva.
4) Replace HTTP links with HTTPS, from Alexander A. Klimov.
5) Remove superfluous null header checks in ip6tables, from
Gaurav Singh.
6) Add extended netlink error reporting for expression.
7) Report EEXIST on overlapping chain, set elements and flowtable
devices.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch makes the masks cache size configurable, or with
a size of 0, disable it.
Reviewed-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add a counter that counts the number of masks cache hits, and
export it through the megaflow netlink statistics.
Reviewed-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Add uncore support for Intel Comet Lake
- Add RAPL support for Hygon Fam18h
- Add Intel "IIO stack to PMON mapping" support on Skylake-SP CPUs,
which enumerates per device performance counters via sysfs and enables
the perf stat --iiostat functionality
- Add support for Intel "Architectural LBRs", which generalized the model
specific LBR hardware tracing feature into a model-independent, architected
performance monitoring feature. Usage is mostly seamless to tooling, as the
pre-existing LBR features are kept, but there's a couple of advantages
under the hood, such as faster context-switching, faster LBR reads,
cleaner exposure of LBR features to guest kernels, etc.
( Since architectural LBRs are supported via XSAVE, there's related
changes to the x86 FPU code as well. )
- ftrace/perf updates: Add support to add a text poke event to record changes
to kernel text (i.e. self-modifying code) in order to
support tracers like Intel PT decoding through
jump labels, kprobes and ftrace trampolines.
- Misc cleanups, smaller fixes.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-core-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf event updates from Ingo Molnar:
"HW support updates:
- Add uncore support for Intel Comet Lake
- Add RAPL support for Hygon Fam18h
- Add Intel "IIO stack to PMON mapping" support on Skylake-SP CPUs,
which enumerates per device performance counters via sysfs and
enables the perf stat --iiostat functionality
- Add support for Intel "Architectural LBRs", which generalized the
model specific LBR hardware tracing feature into a
model-independent, architected performance monitoring feature.
Usage is mostly seamless to tooling, as the pre-existing LBR
features are kept, but there's a couple of advantages under the
hood, such as faster context-switching, faster LBR reads, cleaner
exposure of LBR features to guest kernels, etc.
( Since architectural LBRs are supported via XSAVE, there's related
changes to the x86 FPU code as well. )
ftrace/perf updates:
- Add support to add a text poke event to record changes to kernel
text (i.e. self-modifying code) in order to support tracers like
Intel PT decoding through jump labels, kprobes and ftrace
trampolines.
Misc cleanups, smaller fixes..."
* tag 'perf-core-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (47 commits)
perf/x86/rapl: Add Hygon Fam18h RAPL support
kprobes: Remove unnecessary module_mutex locking from kprobe_optimizer()
x86/perf: Fix a typo
perf: <linux/perf_event.h>: drop a duplicated word
perf/x86/intel/lbr: Support XSAVES for arch LBR read
perf/x86/intel/lbr: Support XSAVES/XRSTORS for LBR context switch
x86/fpu/xstate: Add helpers for LBR dynamic supervisor feature
x86/fpu/xstate: Support dynamic supervisor feature for LBR
x86/fpu: Use proper mask to replace full instruction mask
perf/x86: Remove task_ctx_size
perf/x86/intel/lbr: Create kmem_cache for the LBR context data
perf/core: Use kmem_cache to allocate the PMU specific data
perf/core: Factor out functions to allocate/free the task_ctx_data
perf/x86/intel/lbr: Support Architectural LBR
perf/x86/intel/lbr: Factor out intel_pmu_store_lbr
perf/x86/intel/lbr: Factor out rdlbr_all() and wrlbr_all()
perf/x86/intel/lbr: Mark the {rd,wr}lbr_{to,from} wrappers __always_inline
perf/x86/intel/lbr: Unify the stored format of LBR information
perf/x86/intel/lbr: Support LBR_CTL
perf/x86: Expose CPUID enumeration bits for arch LBR
...
- Removal of the tremendously unpopular read_barrier_depends() barrier,
which is a NOP on all architectures apart from Alpha, in favour of
allowing architectures to override READ_ONCE() and do whatever dance
they need to do to ensure address dependencies provide LOAD ->
LOAD/STORE ordering. This work also offers a potential solution if
compilers are shown to convert LOAD -> LOAD address dependencies into
control dependencies (e.g. under LTO), as weakly ordered architectures
will effectively be able to upgrade READ_ONCE() to smp_load_acquire().
The latter case is not used yet, but will be discussed further at LPC.
- Make the MSI/IOMMU input/output ID translation PCI agnostic, augment
the MSI/IOMMU ACPI/OF ID mapping APIs to accept an input ID
bus-specific parameter and apply the resulting changes to the device
ID space provided by the Freescale FSL bus.
- arm64 support for TLBI range operations and translation table level
hints (part of the ARMv8.4 architecture version).
- Time namespace support for arm64.
- Export the virtual and physical address sizes in vmcoreinfo for
makedumpfile and crash utilities.
- CPU feature handling cleanups and checks for programmer errors
(overlapping bit-fields).
- ACPI updates for arm64: disallow AML accesses to EFI code regions and
kernel memory.
- perf updates for arm64.
- Miscellaneous fixes and cleanups, most notably PLT counting
optimisation for module loading, recordmcount fix to ignore
relocations other than R_AARCH64_CALL26, CMA areas reserved for
gigantic pages on 16K and 64K configurations.
- Trivial typos, duplicate words.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 and cross-arch updates from Catalin Marinas:
"Here's a slightly wider-spread set of updates for 5.9.
Going outside the usual arch/arm64/ area is the removal of
read_barrier_depends() series from Will and the MSI/IOMMU ID
translation series from Lorenzo.
The notable arm64 updates include ARMv8.4 TLBI range operations and
translation level hint, time namespace support, and perf.
Summary:
- Removal of the tremendously unpopular read_barrier_depends()
barrier, which is a NOP on all architectures apart from Alpha, in
favour of allowing architectures to override READ_ONCE() and do
whatever dance they need to do to ensure address dependencies
provide LOAD -> LOAD/STORE ordering.
This work also offers a potential solution if compilers are shown
to convert LOAD -> LOAD address dependencies into control
dependencies (e.g. under LTO), as weakly ordered architectures will
effectively be able to upgrade READ_ONCE() to smp_load_acquire().
The latter case is not used yet, but will be discussed further at
LPC.
- Make the MSI/IOMMU input/output ID translation PCI agnostic,
augment the MSI/IOMMU ACPI/OF ID mapping APIs to accept an input ID
bus-specific parameter and apply the resulting changes to the
device ID space provided by the Freescale FSL bus.
- arm64 support for TLBI range operations and translation table level
hints (part of the ARMv8.4 architecture version).
- Time namespace support for arm64.
- Export the virtual and physical address sizes in vmcoreinfo for
makedumpfile and crash utilities.
- CPU feature handling cleanups and checks for programmer errors
(overlapping bit-fields).
- ACPI updates for arm64: disallow AML accesses to EFI code regions
and kernel memory.
- perf updates for arm64.
- Miscellaneous fixes and cleanups, most notably PLT counting
optimisation for module loading, recordmcount fix to ignore
relocations other than R_AARCH64_CALL26, CMA areas reserved for
gigantic pages on 16K and 64K configurations.
- Trivial typos, duplicate words"
Link: http://lkml.kernel.org/r/20200710165203.31284-1-will@kernel.org
Link: http://lkml.kernel.org/r/20200619082013.13661-1-lorenzo.pieralisi@arm.com
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (82 commits)
arm64: use IRQ_STACK_SIZE instead of THREAD_SIZE for irq stack
arm64/mm: save memory access in check_and_switch_context() fast switch path
arm64: sigcontext.h: delete duplicated word
arm64: ptrace.h: delete duplicated word
arm64: pgtable-hwdef.h: delete duplicated words
bus: fsl-mc: Add ACPI support for fsl-mc
bus/fsl-mc: Refactor the MSI domain creation in the DPRC driver
of/irq: Make of_msi_map_rid() PCI bus agnostic
of/irq: make of_msi_map_get_device_domain() bus agnostic
dt-bindings: arm: fsl: Add msi-map device-tree binding for fsl-mc bus
of/device: Add input id to of_dma_configure()
of/iommu: Make of_map_rid() PCI agnostic
ACPI/IORT: Add an input ID to acpi_dma_configure()
ACPI/IORT: Remove useless PCI bus walk
ACPI/IORT: Make iort_msi_map_rid() PCI agnostic
ACPI/IORT: Make iort_get_device_domain IRQ domain agnostic
ACPI/IORT: Make iort_match_node_callback walk the ACPI namespace for NC
arm64: enable time namespace support
arm64/vdso: Restrict splitting VVAR VMA
arm64/vdso: Handle faults on timens page
...
Rename the bit to match latest virtio spec.
Add a compat macro to avoid breaking existing userspace.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
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Merge tag 'for-5.9/io_uring-20200802' of git://git.kernel.dk/linux-block
Pull io_uring updates from Jens Axboe:
"Lots of cleanups in here, hardening the code and/or making it easier
to read and fixing bugs, but a core feature/change too adding support
for real async buffered reads. With the latter in place, we just need
buffered write async support and we're done relying on kthreads for
the fast path. In detail:
- Cleanup how memory accounting is done on ring setup/free (Bijan)
- sq array offset calculation fixup (Dmitry)
- Consistently handle blocking off O_DIRECT submission path (me)
- Support proper async buffered reads, instead of relying on kthread
offload for that. This uses the page waitqueue to drive retries
from task_work, like we handle poll based retry. (me)
- IO completion optimizations (me)
- Fix race with accounting and ring fd install (me)
- Support EPOLLEXCLUSIVE (Jiufei)
- Get rid of the io_kiocb unionizing, made possible by shrinking
other bits (Pavel)
- Completion side cleanups (Pavel)
- Cleanup REQ_F_ flags handling, and kill off many of them (Pavel)
- Request environment grabbing cleanups (Pavel)
- File and socket read/write cleanups (Pavel)
- Improve kiocb_set_rw_flags() (Pavel)
- Tons of fixes and cleanups (Pavel)
- IORING_SQ_NEED_WAKEUP clear fix (Xiaoguang)"
* tag 'for-5.9/io_uring-20200802' of git://git.kernel.dk/linux-block: (127 commits)
io_uring: flip if handling after io_setup_async_rw
fs: optimise kiocb_set_rw_flags()
io_uring: don't touch 'ctx' after installing file descriptor
io_uring: get rid of atomic FAA for cq_timeouts
io_uring: consolidate *_check_overflow accounting
io_uring: fix stalled deferred requests
io_uring: fix racy overflow count reporting
io_uring: deduplicate __io_complete_rw()
io_uring: de-unionise io_kiocb
io-wq: update hash bits
io_uring: fix missing io_queue_linked_timeout()
io_uring: mark ->work uninitialised after cleanup
io_uring: deduplicate io_grab_files() calls
io_uring: don't do opcode prep twice
io_uring: clear IORING_SQ_NEED_WAKEUP after executing task works
io_uring: batch put_task_struct()
tasks: add put_task_struct_many()
io_uring: return locked and pinned page accounting
io_uring: don't miscount pinned memory
io_uring: don't open-code recv kbuf managment
...
Drop the repeated word "mode" in a comment.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Richard Weinberger <richard@nod.at>
Add LINK_DETACH command to force-detach bpf_link without destroying it. It has
the same behavior as auto-detaching of bpf_link due to cgroup dying for
bpf_cgroup_link or net_device being destroyed for bpf_xdp_link. In such case,
bpf_link is still a valid kernel object, but is defuncts and doesn't hold BPF
program attached to corresponding BPF hook. This functionality allows users
with enough access rights to manually force-detach attached bpf_link without
killing respective owner process.
This patch implements LINK_DETACH for cgroup, xdp, and netns links, mostly
re-using existing link release handling code.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20200731182830.286260-2-andriin@fb.com
* code cleanups and fixups as usual
* AQL & internal TXQ improvements from Felix
* some mesh 802.1X support bits
* some injection improvements from Mathy of KRACK
fame, so we'll see what this results in ;-)
* some more initial S1G supports bits, this time
(some of?) the userspace APIs
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Merge tag 'mac80211-next-for-davem-2020-07-31' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
We have a number of changes
* code cleanups and fixups as usual
* AQL & internal TXQ improvements from Felix
* some mesh 802.1X support bits
* some injection improvements from Mathy of KRACK
fame, so we'll see what this results in ;-)
* some more initial S1G supports bits, this time
(some of?) the userspace APIs
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
netdev protodown is a mechanism that allows protocols to
hold an interface down. It was initially introduced in
the kernel to hold links down by a multihoming protocol.
There was also an attempt to introduce protodown
reason at the time but was rejected. protodown and protodown reason
is supported by almost every switching and routing platform.
It was ok for a while to live without a protodown reason.
But, its become more critical now given more than
one protocol may need to keep a link down on a system
at the same time. eg: vrrp peer node, port security,
multihoming protocol. Its common for Network operators and
protocol developers to look for such a reason on a networking
box (Its also known as errDisable by most networking operators)
This patch adds support for link protodown reason
attribute. There are two ways to maintain protodown
reasons.
(a) enumerate every possible reason code in kernel
- A protocol developer has to make a request and
have that appear in a certain kernel version
(b) provide the bits in the kernel, and allow user-space
(sysadmin or NOS distributions) to manage the bit-to-reasonname
map.
- This makes extending reason codes easier (kind of like
the iproute2 table to vrf-name map /etc/iproute2/rt_tables.d/)
This patch takes approach (b).
a few things about the patch:
- It treats the protodown reason bits as counter to indicate
active protodown users
- Since protodown attribute is already an exposed UAPI,
the reason is not enforced on a protodown set. Its a no-op
if not used.
the patch follows the below algorithm:
- presence of reason bits set indicates protodown
is in use
- user can set protodown and protodown reason in a
single or multiple setlink operations
- setlink operation to clear protodown, will return -EBUSY
if there are active protodown reason bits
- reason is not included in link dumps if not used
example with patched iproute2:
$cat /etc/iproute2/protodown_reasons.d/r.conf
0 mlag
1 evpn
2 vrrp
3 psecurity
$ip link set dev vxlan0 protodown on protodown_reason vrrp on
$ip link set dev vxlan0 protodown_reason mlag on
$ip link show
14: vxlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode
DEFAULT group default qlen 1000
link/ether f6:06:be:17:91:e7 brd ff:ff:ff:ff:ff:ff protodown on <mlag,vrrp>
$ip link set dev vxlan0 protodown_reason mlag off
$ip link set dev vxlan0 protodown off protodown_reason vrrp off
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This change adds TCP_NLA_EDT to SCM_TIMESTAMPING_OPT_STATS that reports
the earliest departure time(EDT) of the timestamped skb. By tracking EDT
values of the skb from different timestamps, we can observe when and how
much the value changed. This allows to measure the precise delay
injected on the sender host e.g. by a bpf-base throttler.
Signed-off-by: Yousuk Seung <ysseung@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Soheil Hassas Yeganeh <soheil@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Let drivers advertise support for AP-mode WPA/WPA2-PSK 4-way handshake
offloading with a new NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK flag.
Extend use of NL80211_ATTR_PMK attribute indicating it might be passed
as part of NL80211_CMD_START_AP command, and contain the PSK (which is
the PMK, hence the name).
The driver is assumed to handle the 4-way handshake by itself in this
case, instead of relying on userspace.
Signed-off-by: Chung-Hsien Hsu <stanley.hsu@cypress.com>
Signed-off-by: Chi-Hsien Lin <chi-hsien.lin@cypress.com>
Link: https://lore.kernel.org/r/20200623134938.39997-2-chi-hsien.lin@cypress.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Add a new feature flag that drivers can use to advertize support for
Operating Channel Validation (OCV) when using driver's SME for RSNA
handshakes.
Signed-off-by: Veerendranath Jakkam <vjakkam@codeaurora.org>
Link: https://lore.kernel.org/r/20200720074225.8990-1-vjakkam@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Besides information about num of peerings and gate connectivity,
the mesh formation byte also contains a flag for authentication
server connectivity, that currently cannot be set in the mesh conf.
This patch adds this capability, which is necessary to implement
802.1X authentication in mesh mode.
Signed-off-by: Markus Theil <markus.theil@tu-ilmenau.de>
Link: https://lore.kernel.org/r/20200611140238.427461-1-markus.theil@tu-ilmenau.de
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Currently, before being able to forward a packet between two 802.11s
nodes, both a PLINK handshake is performed upon receiving a beacon and
then later a PREQ/PREP exchange for path discovery is performed on
demand upon receiving a data frame to forward.
When running a mesh protocol on top of an 802.11s interface, like
batman-adv, we do not need the multi-hop mesh routing capabilities of
802.11s and usually set mesh_fwding=0. However, even with mesh_fwding=0
the PREQ/PREP path discovery is still performed on demand. Even though
in this scenario the next hop PREQ/PREP will determine is always the
direct 11s neighbor node.
The new mesh_nolearn parameter allows to skip the PREQ/PREP exchange in
this scenario, leading to a reduced delay, reduced packet buffering and
simplifies HWMP in general.
mesh_nolearn is still rather conservative in that if the packet destination
is not a direct 11s neighbor, it will fall back to PREQ/PREP path
discovery.
For normal, multi-hop 802.11s mesh routing it is usually not advisable
to enable mesh_nolearn as a transmission to a direct but distant neighbor
might be worse than reaching that same node via a more robust /
higher throughput etc. multi-hop path.
Cc: Sven Eckelmann <sven@narfation.org>
Cc: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Linus Lüssing <ll@simonwunderlich.de>
Link: https://lore.kernel.org/r/20200617073034.26149-1-linus.luessing@c0d3.blue
[fix nl80211 policy to range 0/1 only]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Steffen Klassert says:
====================
pull request (net-next): ipsec-next 2020-07-30
Please note that I did the first time now --no-ff merges
of my testing branch into the master branch to include
the [PATCH 0/n] message of a patchset. Please let me
know if this is desirable, or if I should do it any
different.
1) Introduce a oseq-may-wrap flag to disable anti-replay
protection for manually distributed ICVs as suggested
in RFC 4303. From Petr Vaněk.
2) Patchset to fully support IPCOMP for vti4, vti6 and
xfrm interfaces. From Xin Long.
3) Switch from a linear list to a hash list for xfrm interface
lookups. From Eyal Birger.
4) Fixes to not register one xfrm(6)_tunnel object twice.
From Xin Long.
5) Fix two compile errors that were introduced with the
IPCOMP support for vti and xfrm interfaces.
Also from Xin Long.
6) Make the policy hold queue work with VTI. This was
forgotten when VTI was implemented.
Please pull or let me know if there are problems.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.
Deterministic algorithm:
For each file:
If not .svg:
For each line:
If doesn't contain `\bxmlns\b`:
For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
If both the HTTP and HTTPS versions
return 200 OK and serve the same content:
Replace HTTP with HTTPS.
Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Introduce a mechanism that performs an handshake between the userspace
provider and kernel driver which verifies that the user supports all
required features in order to operate correctly.
The handshake verifies the needed functionality by comparing the reported
device caps and the provider caps. If the device reports a non-zero
capability the appropriate comp mask is required from the userspace
provider in order to allocate the context.
Link: https://lore.kernel.org/r/20200722140312.3651-4-galpress@amazon.com
Reviewed-by: Shadi Ammouri <sammouri@amazon.com>
Reviewed-by: Yossi Leybovich <sleybo@amazon.com>
Signed-off-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
The device reports the minimum SQ size required for creation.
This patch queries the min SQ size and reports it back to the userspace
library.
Link: https://lore.kernel.org/r/20200722140312.3651-3-galpress@amazon.com
Reviewed-by: Firas JahJah <firasj@amazon.com>
Reviewed-by: Shadi Ammouri <sammouri@amazon.com>
Signed-off-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
The device reports the maximum number of bytes to be written before
ringing the doorbell (zero means unlimited).
This patch queries the max batch size and reports it back to the userspace
library.
Link: https://lore.kernel.org/r/20200722140312.3651-2-galpress@amazon.com
Reviewed-by: Daniel Kranzdorf <dkkranzd@amazon.com>
Reviewed-by: Firas JahJah <firasj@amazon.com>
Signed-off-by: Gal Pressman <galpress@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This patch implements the tmr_notify callback for tcmu. When the callback
is called, tcmu checks the list of aborted commands it received as
parameter:
- aborted commands in the qfull_queue are removed from the queue and
target_complete_command is called
- from the cmd_ids of aborted commands currently uncompleted in cmd ring
it creates a list of aborted cmd_ids.
Finally a TMR notification is written to cmd ring containing TMR type and
cmd_id list. If there is no space in ring, the TMR notification is queued
on a TMR specific queue.
The TMR specific queue 'tmr_queue' can be seen as a extension of the cmd
ring. At the end of each iexecution of tcmu_complete_commands() we check
whether tmr_queue contains TMRs and try to move them onto the ring. If
tmr_queue is not empty after that, we don't call run_qfull_queue() because
commands must not overtake TMRs.
This way we guarantee that cmd_ids in TMR notification received by
userspace either match an active, not yet completed command or are no
longer valid due to userspace having complete some cmd_ids meanwhile.
New commands that were assigned to an aborted cmd_id will always appear on
the cmd ring _after_ the TMR.
Link: https://lore.kernel.org/r/20200726153510.13077-8-bstroesser@ts.fujitsu.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Bodo Stroesser <bstroesser@ts.fujitsu.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Due to bpf tree fix merge, bpf_ringbuf_output() signature ended up with int as
a return type, while all other helpers got converted to returning long. So fix
it in bpf-next now.
Fixes: b0659d8a95 ("bpf: Fix definition of bpf_ringbuf_output() helper in UAPI comments")
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200727224715.652037-1-andriin@fb.com
Introduce a new fanotify_init() flag FAN_REPORT_NAME. It requires the
flag FAN_REPORT_DIR_FID and there is a constant for setting both flags
named FAN_REPORT_DFID_NAME.
For a group with flag FAN_REPORT_NAME, the parent fid and name are
reported for directory entry modification events (create/detete/move)
and for events on non-directory objects.
Events on directories themselves are reported with their own fid and
"." as the name.
The parent fid and name are reported with an info record of type
FAN_EVENT_INFO_TYPE_DFID_NAME, similar to the way that parent fid is
reported with into type FAN_EVENT_INFO_TYPE_DFID, but with an appended
null terminated name string.
Link: https://lore.kernel.org/r/20200716084230.30611-21-amir73il@gmail.com
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
For now, the flag is mutually exclusive with FAN_REPORT_FID.
Events include a single info record of type FAN_EVENT_INFO_TYPE_DFID
with a directory file handle.
For now, events are only reported for:
- Directory modification events
- Events on children of a watching directory
- Events on directory objects
Soon, we will add support for reporting the parent directory fid
for events on non-directories with filesystem/mount mark and
support for reporting both parent directory fid and child fid.
Link: https://lore.kernel.org/r/20200716084230.30611-19-amir73il@gmail.com
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
It was never enabled in uapi and its functionality is about to be
superseded by events FAN_CREATE, FAN_DELETE, FAN_MOVE with group
flag FAN_REPORT_NAME.
Keep a place holder variable name_event instead of removing the
name recording code since it will be used by the new events.
Link: https://lore.kernel.org/r/20200708111156.24659-17-amir73il@gmail.com
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Parallel Redundancy Protocol (PRP) is another redundancy protocol
introduced by IEC 63439 standard. It is similar to HSR in many
aspects:-
- Use a pair of Ethernet interfaces to created the PRP device
- Use a 6 byte redundancy protocol part (RCT, Redundancy Check
Trailer) similar to HSR Tag.
- Has Link Redundancy Entity (LRE) that works with RCT to implement
redundancy.
Key difference is that the protocol unit is a trailer instead of a
prefix as in HSR. That makes it inter-operable with tradition network
components such as bridges/switches which treat it as pad bytes,
whereas HSR nodes requires some kind of translators (Called redbox) to
talk to regular network devices. This features allows regular linux box
to be converted to a DAN-P box. DAN-P stands for Dual Attached Node - PRP
similar to DAN-H (Dual Attached Node - HSR).
Add a comment at the header/source code to explicitly state that the
driver files also handles PRP protocol as well.
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It's unusable from userland - it uses elf_gregset_t, which is not
provided by exported headers. glibc has it in sys/procfs.h, but
the same file defines struct elf_prstatus, so linux/elfcore.h can't
be included once sys/procfs.h has been pulled. Same goes for uclibc
and dietlibc simply doesn't have elf_gregset_t defined anywhere.
IOW, no userland source is including that thing.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Drop the repeated word "for" in a comment.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: platform-driver-x86@vger.kernel.org
Cc: Darren Hart <dvhart@infradead.org>
Cc: Andy Shevchenko <andy@infradead.org>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Add retrieval of the filesystem's metadata UUID to the fsinfo ioctl.
This is driven by setting the BTRFS_FS_INFO_FLAG_METADATA_UUID flag in
btrfs_ioctl_fs_info_args::flags.
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Add retrieval of the filesystem's generation to the fsinfo ioctl. This is
driven by setting the BTRFS_FS_INFO_FLAG_GENERATION flag in
btrfs_ioctl_fs_info_args::flags.
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
With the recent addition of filesystem checksum types other than CRC32c,
it is not anymore hard-coded which checksum type a btrfs filesystem uses.
Up to now there is no good way to read the filesystem checksum, apart from
reading the filesystem UUID and then query sysfs for the checksum type.
Add a new csum_type and csum_size fields to the BTRFS_IOC_FS_INFO ioctl
command which usually is used to query filesystem features. Also add a
flags member indicating that the kernel responded with a set csum_type and
csum_size field.
For compatibility reasons, only return the csum_type and csum_size if
the BTRFS_FS_INFO_FLAG_CSUM_INFO flag was passed to the kernel. Also
clear any unknown flags so we don't pass false positives to user-space
newer than the kernel.
To simplify further additions to the ioctl, also switch the padding to a
u8 array. Pahole was used to verify the result of this switch:
The csum members are added before flags, which might look odd, but this
is to keep the alignment requirements and not to introduce holes in the
structure.
$ pahole -C btrfs_ioctl_fs_info_args fs/btrfs/btrfs.ko
struct btrfs_ioctl_fs_info_args {
__u64 max_id; /* 0 8 */
__u64 num_devices; /* 8 8 */
__u8 fsid[16]; /* 16 16 */
__u32 nodesize; /* 32 4 */
__u32 sectorsize; /* 36 4 */
__u32 clone_alignment; /* 40 4 */
__u16 csum_type; /* 44 2 */
__u16 csum_size; /* 46 2 */
__u64 flags; /* 48 8 */
__u8 reserved[968]; /* 56 968 */
/* size: 1024, cachelines: 16, members: 10 */
};
Fixes: 3951e7f050 ("btrfs: add xxhash64 to checksumming algorithms")
Fixes: 3831bf0094 ("btrfs: add sha256 to checksumming algorithm")
CC: stable@vger.kernel.org # 5.5+
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
The qgroup level is limited to u16, so no need to use u64 for it.
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Fix the Amlogic Video Framebuffer Compression modifier macro to
correctly add the layout options, a pair of parenthesis was missing.
Fixes: d6528ec883 ("drm/fourcc: Add modifier definitions for describing Amlogic Video Framebuffer Compression")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200723090551.27529-1-narmstrong@baylibre.com
Add bpf_link-based API (bpf_xdp_link) to attach BPF XDP program through
BPF_LINK_CREATE command.
bpf_xdp_link is mutually exclusive with direct BPF program attachment,
previous BPF program should be detached prior to attempting to create a new
bpf_xdp_link attachment (for a given XDP mode). Once BPF link is attached, it
can't be replaced by other BPF program attachment or link attachment. It will
be detached only when the last BPF link FD is closed.
bpf_xdp_link will be auto-detached when net_device is shutdown, similarly to
how other BPF links behave (cgroup, flow_dissector). At that point bpf_link
will become defunct, but won't be destroyed until last FD is closed.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200722064603.3350758-5-andriin@fb.com
The bpf iterator for map elements are implemented.
The bpf program will receive four parameters:
bpf_iter_meta *meta: the meta data
bpf_map *map: the bpf_map whose elements are traversed
void *key: the key of one element
void *value: the value of the same element
Here, meta and map pointers are always valid, and
key has register type PTR_TO_RDONLY_BUF_OR_NULL and
value has register type PTR_TO_RDWR_BUF_OR_NULL.
The kernel will track the access range of key and value
during verification time. Later, these values will be compared
against the values in the actual map to ensure all accesses
are within range.
A new field iter_seq_info is added to bpf_map_ops which
is used to add map type specific information, i.e., seq_ops,
init/fini seq_file func and seq_file private data size.
Subsequent patches will have actual implementation
for bpf_map_ops->iter_seq_info.
In user space, BPF_ITER_LINK_MAP_FD needs to be
specified in prog attr->link_create.flags, which indicates
that attr->link_create.target_fd is a map_fd.
The reason for such an explicit flag is for possible
future cases where one bpf iterator may allow more than
one possible customization, e.g., pid and cgroup id for
task_file.
Current kernel internal implementation only allows
the target to register at most one required bpf_iter_link_info.
To support the above case, optional bpf_iter_link_info's
are needed, the target can be extended to register such link
infos, and user provided link_info needs to match one of
target supported ones.
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200723184112.590360-1-yhs@fb.com
Platform reboots are expensive. Towards reducing downtime to apply
firmware updates the Intel NVDIMM command definition is growing support
for applying live firmware updates that only require temporarily
suspending memory traffic instead of a full reboot.
Follow-on commits add support for triggering firmware activation, this
patch only defines the commands, adds probe support, and validates that
they are blocked via the ioctl path. The ioctl-path block ensures that
the OS is in charge since these commands have side effects only the OS
can handle. Specifically firmware activation may cause the memory
controller to be quiesced on the order of 100s of milliseconds. In that
case Linux ensure the activation only takes place while the OS is in a
suspend state.
Link: https://pmem.io/documents/IntelOptanePMem_DSM_Interface-V2.0.pdf
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
The ND_CMD_CALL format allows for a general passthrough of passlisted
commands targeting a given command set. However there is no validation
of the family index relative to what the bus supports.
- Update the NFIT bus implementation (the only one that supports
ND_CMD_CALL passthrough) to also passlist the valid set of command
family indices.
- Update the generic __nd_ioctl() path to validate that field on behalf
of all implementations.
Fixes: 31eca76ba2 ("nfit, libnvdimm: limited/whitelisted dimm command marshaling mechanism")
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Len Brown <lenb@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
The UDP reuseport conflict was a little bit tricky.
The net-next code, via bpf-next, extracted the reuseport handling
into a helper so that the BPF sk lookup code could invoke it.
At the same time, the logic for reuseport handling of unconnected
sockets changed via commit efc6b6f6c3
which changed the logic to carry on the reuseport result into the
rest of the lookup loop if we do not return immediately.
This requires moving the reuseport_has_conns() logic into the callers.
While we are here, get rid of inline directives as they do not belong
in foo.c files.
The other changes were cases of more straightforward overlapping
modifications.
Signed-off-by: David S. Miller <davem@davemloft.net>
The large bucket feature is to extend bucket_size from 16bit to 32bit.
When create cache device on zoned device (e.g. zoned NVMe SSD), making
a single bucket cover one or more zones of the zoned device is the
simplest way to support zoned device as cache by bcache.
But current maximum bucket size is 16MB and a typical zone size of zoned
device is 256MB, this is the major motiviation to extend bucket size to
a larger bit width.
This patch is the basic and first change to support large bucket size,
the major changes it makes are,
- Add BCH_FEATURE_INCOMPAT_LARGE_BUCKET for the large bucket feature,
INCOMPAT means it introduces incompatible on-disk format change.
- Add BCH_FEATURE_INCOMPAT_FUNCS(large_bucket, LARGE_BUCKET) routines.
- Adds __le16 bucket_size_hi into struct cache_sb_disk at offset 0x8d0
for the on-disk super block format.
- For the in-memory super block struct cache_sb, member bucket_size is
extended from __u16 to __32.
- Add get_bucket_size() to combine the bucket_size and bucket_size_hi
from struct cache_sb_disk into an unsigned int value.
Since we already have large bucket size helpers meta_bucket_pages(),
meta_bucket_bytes() and alloc_meta_bucket_pages(), they make sure when
bucket size > 8MB, the memory allocation for bcache meta data bucket
won't fail no matter how large the bucket size extended. So these meta
data buckets are handled properly when the bucket size width increase
from 16bit to 32bit, we don't need to worry about them.
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
We have struct cache_sb_disk for on-disk super block already, it is
unnecessary to keep the in-memory super block format exactly mapping
to the on-disk struct layout.
This patch adds code comments to notice that struct cache_sb is not
exactly mapping to cache_sb_disk, and removes the useless member csum
and pad[5].
Although struct cache_sb does not belong to uapi, but there are still
some on-disk format related macros reference it and it is unncessary to
get rid of such dependency now. So struct cache_sb will continue to stay
in include/uapi/linux/bache.h for now.
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The new added super block version BCACHE_SB_VERSION_BDEV_WITH_FEATURES
(5) BCACHE_SB_VERSION_CDEV_WITH_FEATURES value (6), is for the feature
set bits.
Devices have super block version equal to the new version will have
three new members for feature set bits in the on-disk super block,
__le64 feature_compat;
__le64 feature_incompat;
__le64 feature_ro_compat;
They are used for further new features which may introduce on-disk
format change, and avoid unncessary super block version increase.
The very basic features handling code skeleton is also initialized in
this patch.
Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Extend the rfc 4884 read interface introduced for ipv4 in
commit eba75c587e ("icmp: support rfc 4884") to ipv6.
Add socket option SOL_IPV6/IPV6_RECVERR_RFC4884.
Changes v1->v2:
- make ipv6_icmp_error_rfc4884 static (file scope)
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Adding new cls flower keys for hash value and hash
mask and dissect the hash info from the skb into
the flow key towards flow classication.
Signed-off-by: Ariel Levkovich <lariel@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nnothing uses the enum name, so this is harmless.
Fixes: 3226944124 ("IB/mlx5: Introduce driver create and destroy flow methods")
Link: https://lore.kernel.org/r/20200724084112.GC31930@amd
Signed-off-by: Pavel Machek (CIP) <pavel@denx.de>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Merge in io_uring-5.8 fixes, as changes/cleanups to how we do locked
mem accounting require a fixup, and only one of the spots are noticed
by git as the other merges cleanly. The flags fix from io_uring-5.8
also causes a merge conflict, the leak fix for recvmsg, the double poll
fix, and the link failure locking fix.
* io_uring-5.8:
io_uring: fix lockup in io_fail_links()
io_uring: fix ->work corruption with poll_add
io_uring: missed req_init_async() for IOSQE_ASYNC
io_uring: always allow drain/link/hardlink/async sqe flags
io_uring: ensure double poll additions work with both request types
io_uring: fix recvmsg memory leak with buffer selection
io_uring: fix not initialised work->flags
io_uring: fix missing msg_name assignment
io_uring: account user memory freed when exit has been queued
io_uring: fix memleak in io_sqe_files_register()
io_uring: fix memleak in __io_sqe_files_update()
io_uring: export cq overflow status to userspace
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Add command submission statistics structure which can be obtained
through the info ioctl. Each drop counter describes the reason for
which the command submission was dropped.
This information is needed for the user to be aware of the specific
reason for which the submitted work was dropped. The user can then
utilize the driver more efficiently.
Signed-off-by: Ofir Bitton <obitton@habana.ai>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
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Merge v5.8-rc6 into drm-next
I've got a silent conflict + two trees based on fixes to merge.
Fixes a silent merge with amdgpu
Signed-off-by: Dave Airlie <airlied@redhat.com>
Drop the repeated word "the" in a comment.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Wei Liu <wei.liu@kernel.org>
Cc: linux-hyperv@vger.kernel.org
Link: https://lore.kernel.org/r/20200719002841.20369-1-rdunlap@infradead.org
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Here is the (slightly larger than usual) patch set for the 5.9-rc1 merge
window.
DFL:
- Xu's changes add support for AFU interrupt handling and puts them to
use for error handling.
- Xu's other change also adds another device-id for the Intel FPGA PAC N3000.
- John's change converts from using get_user_pages() to
pin_user_pages().
- Gustavo's patch cleans up some of the allocation by using
struct_size().
Xilinx:
- Luca's changes clean up the xilinx-spi and xilinx-slave-serial drivers
and updates the comments and dt-bindings to reflect the fact it also
supports 7 series devices.
Core:
- Tom cleaned up the fpga-bridge / fpga-mgr core by removing some
dead-stores.
All patches have been reviewed on the mailing list, and have been in the
last few linux-next releases (as part of my for-next branch) without issues.
Signed-off-by: Moritz Fischer <mdf@kernel.org>
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Merge tag 'fpga-for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mdf/linux-fpga into char-misc-next
Moritz writes:
FPGA Manager changes for 5.9-rc1
Here is the (slightly larger than usual) patch set for the 5.9-rc1 merge
window.
DFL:
- Xu's changes add support for AFU interrupt handling and puts them to
use for error handling.
- Xu's other change also adds another device-id for the Intel FPGA PAC N3000.
- John's change converts from using get_user_pages() to
pin_user_pages().
- Gustavo's patch cleans up some of the allocation by using
struct_size().
Xilinx:
- Luca's changes clean up the xilinx-spi and xilinx-slave-serial drivers
and updates the comments and dt-bindings to reflect the fact it also
supports 7 series devices.
Core:
- Tom cleaned up the fpga-bridge / fpga-mgr core by removing some
dead-stores.
All patches have been reviewed on the mailing list, and have been in the
last few linux-next releases (as part of my for-next branch) without issues.
Signed-off-by: Moritz Fischer <mdf@kernel.org>
* tag 'fpga-for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mdf/linux-fpga:
fpga: dfl: pci: add device id for Intel FPGA PAC N3000
Documentation: fpga: dfl: add descriptions for interrupt related interfaces.
fpga: dfl: afu: add AFU interrupt support
fpga: dfl: fme: add interrupt support for global error reporting
fpga: dfl: afu: add interrupt support for port error reporting
fpga: dfl: introduce interrupt trigger setting API
fpga: dfl: pci: add irq info for feature devices enumeration
fpga: dfl: parse interrupt info for feature devices on enumeration
fpga manager: xilinx-spi: check INIT_B pin during write_init
dt-bindings: fpga: xilinx-slave-serial: add optional INIT_B GPIO
fpga: Fix dead store in fpga-bridge.c
fpga: Fix dead store fpga-mgr.c
fpga: dfl: Use struct_size() in kzalloc()
fpga manager: xilinx-spi: remove unneeded, mistyped variables
fpga manager: xilinx-spi: valid for the 7 Series too
dt-bindings: fpga: xilinx-slave-serial: valid for the 7 Series too
fpga: dfl: afu: convert get_user_pages() --> pin_user_pages()
amd-drm-next-5.9-2020-07-17:
amdgpu:
- SI UVD/VCE clock support
- Updates for Sienna Cichlid
- Expose drm rotation property
- Atomfirmware updates for renoir
- updates to GPUVM hub handling for different register layouts
- swSMU restructuring and cleanups
- RAS fixes
- DC fixes
- mode1 reset support for Sienna Cichlid
- Add support for Navy Flounder GPUs
amdkfd:
- Add SMI events watch interface
UAPI:
- Add amdkfd SMI events watch interface
Userspace which uses this interface:
2235ede34c
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200717132022.4014-1-alexander.deucher@amd.com
UAPI Changes:
Cross-subsystem Changes:
- Convert panel-dsi-cm and ingenic bindings to YAML.
- Add lockdep annotations for dma-fence. \o/
- Describe why indefinite fences are a bad idea
- Update binding for rocktech jh057n00900.
Core Changes:
- Add vblank workers.
- Use spin_(un)lock_irq instead of the irqsave/restore variants in crtc code.
- Add managed vram helpers.
- Convert more logging to drm functions.
- Replace more http links with https in core and drivers.
- Cleanup to ttm iomem functions and implementation.
- Remove TTM CMA memtype as it doesn't work correctly.
- Remove TTM_MEMTYPE_FLAG_MAPPABLE for many drivers that have no
unmappable memory resources.
Driver Changes:
- Add CRC support to nouveau, using the new vblank workers.
- Dithering and atomic state fix for nouveau.
- Fixes for Frida FRD350H54004 panel.
- Add support for OSD mode (sprite planes), IPU (scaling) and multiple
panels/bridges to ingenic.
- Use managed vram helpers in ast.
- Assorted small fixes to ingenic, i810, mxsfb.
- Remove optional unused ttm dummy functions.
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Merge tag 'drm-misc-next-2020-07-22' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
drm-misc-next for v5.9:
UAPI Changes:
Cross-subsystem Changes:
- Convert panel-dsi-cm and ingenic bindings to YAML.
- Add lockdep annotations for dma-fence. \o/
- Describe why indefinite fences are a bad idea
- Update binding for rocktech jh057n00900.
Core Changes:
- Add vblank workers.
- Use spin_(un)lock_irq instead of the irqsave/restore variants in crtc code.
- Add managed vram helpers.
- Convert more logging to drm functions.
- Replace more http links with https in core and drivers.
- Cleanup to ttm iomem functions and implementation.
- Remove TTM CMA memtype as it doesn't work correctly.
- Remove TTM_MEMTYPE_FLAG_MAPPABLE for many drivers that have no
unmappable memory resources.
Driver Changes:
- Add CRC support to nouveau, using the new vblank workers.
- Dithering and atomic state fix for nouveau.
- Fixes for Frida FRD350H54004 panel.
- Add support for OSD mode (sprite planes), IPU (scaling) and multiple
panels/bridges to ingenic.
- Use managed vram helpers in ast.
- Assorted small fixes to ingenic, i810, mxsfb.
- Remove optional unused ttm dummy functions.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/d6bf269e-ccb2-8a7b-fdae-226e9e3f8274@linux.intel.com
Alexei Starovoitov says:
====================
pull-request: bpf-next 2020-07-21
The following pull-request contains BPF updates for your *net-next* tree.
We've added 46 non-merge commits during the last 6 day(s) which contain
a total of 68 files changed, 4929 insertions(+), 526 deletions(-).
The main changes are:
1) Run BPF program on socket lookup, from Jakub.
2) Introduce cpumap, from Lorenzo.
3) s390 JIT fixes, from Ilya.
4) teach riscv JIT to emit compressed insns, from Luke.
5) use build time computed BTF ids in bpf iter, from Yonghong.
====================
Purely independent overlapping changes in both filter.h and xdp.h
Signed-off-by: David S. Miller <davem@davemloft.net>
Drop the doubled word "the" in a comment.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Song Liu <song@kernel.org>
Cc: linux-raid@vger.kernel.org
Signed-off-by: Song Liu <songliubraving@fb.com>
The commit fe80536acf ("bareudp: Added attribute to enable & disable
rx metadata collection") breaks the the original(5.7) default behavior of
bareudp module to collect RX metadadata at the receive. It was added to
avoid the crash at the kernel neighbour subsytem when packet with metadata
from bareudp is processed. But it is no more needed as the
commit 394de110a7 ("net: Added pointer check for
dst->ops->neigh_lookup in dst_neigh_lookup_skb") solves this crash.
Fixes: fe80536acf ("bareudp: Added attribute to enable & disable rx metadata collection")
Signed-off-by: Martin Varghese <martin.varghese@nokia.com>
Acked-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In environments where the preservation of audit events and predictable
usage of system memory are prioritized, admins may use a combination of
--backlog_wait_time and -b options at the risk of degraded performance
resulting from backlog waiting. In some cases, this risk may be
preferred to lost events or unbounded memory usage. Ideally, this risk
can be mitigated by making adjustments when backlog waiting is detected.
However, detection can be difficult using the currently available
metrics. For example, an admin attempting to debug degraded performance
may falsely believe a full backlog indicates backlog waiting. It may
turn out the backlog frequently fills up but drains quickly.
To make it easier to reliably track degraded performance to backlog
waiting, this patch makes the following changes:
Add a new field backlog_wait_time_total to the audit status reply.
Initialize this field to zero. Add to this field the total time spent
by the current task on scheduled timeouts while the backlog limit is
exceeded. Reset field to zero upon request via AUDIT_SET.
Tested on Ubuntu 18.04 using complementary changes to the
audit-userspace and audit-testsuite:
- https://github.com/linux-audit/audit-userspace/pull/134
- https://github.com/linux-audit/audit-testsuite/pull/97
Signed-off-by: Max Englander <max.englander@gmail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Change the repeated word "it" in a comment to "it to".
Also insert a dash in the sentence to add clarity.
Link: https://lore.kernel.org/r/20200719003220.21250-1-rdunlap@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
In order to support short clock counters, provide an ABI extension.
As a whole:
u64 time, delta, cyc = read_cycle_counter();
+ if (cap_user_time_short)
+ cyc = time_cycle + ((cyc - time_cycle) & time_mask);
delta = mul_u64_u32_shr(cyc, time_mult, time_shift);
if (cap_user_time_zero)
time = time_zero + delta;
delta += time_offset;
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Link: https://lore.kernel.org/r/20200716051130.4359-6-leo.yan@linaro.org
Signed-off-by: Will Deacon <will@kernel.org>
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.
Deterministic algorithm:
For each file:
If not .svg:
For each line:
If doesn't contain `\bxmlns\b`:
For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
If both the HTTP and HTTPS versions
return 200 OK and serve the same content:
Replace HTTP with HTTPS.
Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20200719171428.60470-1-grandmaster@al2klimov.de
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Merge 5.8-rc6 into usb-next
We need the USB fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge 5.8-rc6 into tty-next
We need the serial/tty fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
UAPI Changes:
Cross-subsystem Changes:
- Add ckoenig as dma-buf maintainer.
- Revert invalid fix for dma-fence-chain, and fix selftest.
- Add fixmes to amifb about APUS support.
- Use array3_size in fbcon_prepare_logo, and struct_size() in alloc_apertures.
- Fix leaks in neofb, fb/savage and omapfb.
- Other small fixes to fb code.
- Convert some dt bindings to schema for some panels, and fix simple-framebuffer dt example.
Core Changes:
- Add DRM_FORMAT_MOD_GENERIC_16_16_TILE as alias to DRM_FORMAT_MOD_SAMSUNG_16_16_TILE,
as it can be used more generic.
- Add support for multiple DispID extension blocks in edid.
- Use https instead of http for some of the urls.
- Use drm_* macros for logging in mipi-dsi and fb-helper.
- Further cleanup ttm_mem_reg handling.
- Remove duplicated words in comments.
Driver Changes:
- Use __drm_atomic_helper_crtc_reset in all atomic drivers.
- Add Amlogic Video FBC support to meson and fourcc to core.
- Refactor hisilicon's hibmc_drv_vdac.
- Create a TXP CRTC for vc4.
- Rework cursor support in ast.
- Fix runtime PM in STM.
- Allow bigger cursors in vkms.
- Cleanup sg handling in radeon and amdgpu, and stop creating dummy
gtt nodes with ttm fixed.
- Rework crtc handling in mgag200.
- Miscellaneous small fixes to meson, vgem, bridge/dw-hdmi,
panel/auo,b116xw03, panel/LG LB070WV8, lima, bridge/sil_sii8620,
virtio, tilcdc.
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Merge tag 'drm-misc-next-2020-07-16' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
drm-misc-next for v5.9:
UAPI Changes:
Cross-subsystem Changes:
- Add ckoenig as dma-buf maintainer.
- Revert invalid fix for dma-fence-chain, and fix selftest.
- Add fixmes to amifb about APUS support.
- Use array3_size in fbcon_prepare_logo, and struct_size() in alloc_apertures.
- Fix leaks in neofb, fb/savage and omapfb.
- Other small fixes to fb code.
- Convert some dt bindings to schema for some panels, and fix simple-framebuffer dt example.
Core Changes:
- Add DRM_FORMAT_MOD_GENERIC_16_16_TILE as alias to DRM_FORMAT_MOD_SAMSUNG_16_16_TILE,
as it can be used more generic.
- Add support for multiple DispID extension blocks in edid.
- Use https instead of http for some of the urls.
- Use drm_* macros for logging in mipi-dsi and fb-helper.
- Further cleanup ttm_mem_reg handling.
- Remove duplicated words in comments.
Driver Changes:
- Use __drm_atomic_helper_crtc_reset in all atomic drivers.
- Add Amlogic Video FBC support to meson and fourcc to core.
- Refactor hisilicon's hibmc_drv_vdac.
- Create a TXP CRTC for vc4.
- Rework cursor support in ast.
- Fix runtime PM in STM.
- Allow bigger cursors in vkms.
- Cleanup sg handling in radeon and amdgpu, and stop creating dummy
gtt nodes with ttm fixed.
- Rework crtc handling in mgag200.
- Miscellaneous small fixes to meson, vgem, bridge/dw-hdmi,
panel/auo,b116xw03, panel/LG LB070WV8, lima, bridge/sil_sii8620,
virtio, tilcdc.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/8b360d65-f228-9286-d247-3004156a5254@linux.intel.com
Some PHCs like the ocelot/felix switch cannot emit generic periodic
output, but just PPS (pulse per second) signals, which:
- don't start from arbitrary absolute times, but are rather
phase-aligned to the beginning of [the closest next] second.
- have an optional phase offset relative to that beginning of the
second.
For those, it was initially established that they should reject any
other absolute time for the PTP_PEROUT_REQUEST than 0.000000000 [1].
But when it actually came to writing an application [2] that makes use
of this functionality, we realized that we can't really deal generically
with PHCs that support absolute start time, and with PHCs that don't,
without an explicit interface. Namely, in an ideal world, PHC drivers
would ensure that the "perout.start" value written to hardware will
result in a functional output. This means that if the PTP time has
become in the past of this PHC's current time, it should be
automatically fast-forwarded by the driver into a close enough future
time that is known to work (note: this is necessary only if the hardware
doesn't do this fast-forward by itself). But we don't really know what
is the status for PHC drivers in use today, so in the general sense,
user space would be risking to have a non-functional periodic output if
it simply asked for a start time of 0.000000000.
So let's introduce a flag for this type of reduced-functionality
hardware, named PTP_PEROUT_PHASE. The start time is just "soon", the
only thing we know for sure about this signal is that its rising edge
events, Rn, occur at:
Rn = perout.phase + n * perout.period
The "phase" in the periodic output structure is simply an alias to the
"start" time, since both cannot logically be specified at the same time.
Therefore, the binary layout of the structure is not affected.
[1]: https://patchwork.ozlabs.org/project/netdev/patch/20200320103726.32559-7-yangbo.lu@nxp.com/
[2]: https://www.mail-archive.com/linuxptp-devel@lists.sourceforge.net/msg04142.html
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There are external event timestampers (PHCs with support for
PTP_EXTTS_REQUEST) that timestamp both event edges.
When those edges are very close (such as in the case of a short pulse),
there is a chance that the collected timestamp might be of the rising,
or of the falling edge, we never know.
There are also PHCs capable of generating periodic output with a
configurable duty cycle. This is good news, because we can space the
rising and falling edge out enough in time, that the risks to overrun
the 1-entry timestamp FIFO of the extts PHC are lower (example: the
perout PHC can be configured for a period of 1 second, and an "on" time
of 0.5 seconds, resulting in a duty cycle of 50%).
A flag is introduced for signaling that an on time is present in the
perout request structure, for preserving compatibility. Logically
speaking, the duty cycle cannot exceed 100% and the PTP core checks for
this.
PHC drivers that don't support this flag emit a periodic output of an
unspecified duty cycle, same as before.
The duty cycle is encoded as an "on" time, similar to the "start" and
"period" times, and reuses the reserved space while preserving overall
binary layout.
Pahole reported before:
struct ptp_perout_request {
struct ptp_clock_time start; /* 0 16 */
struct ptp_clock_time period; /* 16 16 */
unsigned int index; /* 32 4 */
unsigned int flags; /* 36 4 */
unsigned int rsv[4]; /* 40 16 */
/* size: 56, cachelines: 1, members: 5 */
/* last cacheline: 56 bytes */
};
And now:
struct ptp_perout_request {
struct ptp_clock_time start; /* 0 16 */
struct ptp_clock_time period; /* 16 16 */
unsigned int index; /* 32 4 */
unsigned int flags; /* 36 4 */
union {
struct ptp_clock_time on; /* 40 16 */
unsigned int rsv[4]; /* 40 16 */
}; /* 40 16 */
/* size: 56, cachelines: 1, members: 5 */
/* last cacheline: 56 bytes */
};
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add setsockopt SOL_IP/IP_RECVERR_4884 to return the offset to an
extension struct if present.
ICMP messages may include an extension structure after the original
datagram. RFC 4884 standardized this behavior. It stores the offset
in words to the extension header in u8 icmphdr.un.reserved[1].
The field is valid only for ICMP types destination unreachable, time
exceeded and parameter problem, if length is at least 128 bytes and
entire packet does not exceed 576 bytes.
Return the offset to the start of the extension struct when reading an
ICMP error from the error queue, if it matches the above constraints.
Do not return the raw u8 field. Return the offset from the start of
the user buffer, in bytes. The kernel does not return the network and
transport headers, so subtract those.
Also validate the headers. Return the offset regardless of validation,
as an invalid extension must still not be misinterpreted as part of
the original datagram. Note that !invalid does not imply valid. If
the extension version does not match, no validation can take place,
for instance.
For backward compatibility, make this optional, set by setsockopt
SOL_IP/IP_RECVERR_RFC4884. For API example and feature test, see
github.com/wdebruij/kerneltools/blob/master/tests/recv_icmp_v2.c
For forward compatibility, reserve only setsockopt value 1, leaving
other bits for additional icmp extensions.
Changes
v1->v2:
- convert word offset to byte offset from start of user buffer
- return in ee_data as u8 may be insufficient
- define extension struct and object header structs
- return len only if constraints met
- if returning len, also validate
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Now that the ->compat_{get,set}sockopt proto_ops methods are gone
there is no good reason left to keep the compat syscalls separate.
This fixes the odd use of unsigned int for the compat_setsockopt
optlen and the missing sock_use_custom_sol_socket.
It would also easily allow running the eBPF hooks for the compat
syscalls, but such a large change in behavior does not belong into
a consolidation patch like this one.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
