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Add test checking conditions which lead to connections breaking.
Using bad key or connection gets stuck if device key is rotated
twice.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Daniel Zahka <daniel.zahka@gmail.com>
Link: https://patch.msgid.link/20250927225420.1443468-7-kuba@kernel.org
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Add tests for exercising PSP associations for TCP sockets.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Daniel Zahka <daniel.zahka@gmail.com>
Link: https://patch.msgid.link/20250927225420.1443468-6-kuba@kernel.org
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Add basic tests for sending data over PSP and making sure that key
rotation toggles the MSB of the spi.
Deploy PSP responder on the remote end. We also need a healthy dose
of common helpers for setting up the connections, assertions and
interrogating socket state on the Python side.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Daniel Zahka <daniel.zahka@gmail.com>
Link: https://patch.msgid.link/20250927225420.1443468-5-kuba@kernel.org
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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PSP tests need the remote system to support PSP, and some PSP capable
application to exchange data with. Create a simple PSP responder app
which we can build and deploy to the remote host. The tests themselves
can be written in Python but for ease of deploying the responder is in C
(using C YNL).
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Daniel Zahka <daniel.zahka@gmail.com>
Link: https://patch.msgid.link/20250927225420.1443468-4-kuba@kernel.org
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Simple PSP test to getting info about PSP devices.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Daniel Zahka <daniel.zahka@gmail.com>
Link: https://patch.msgid.link/20250927225420.1443468-3-kuba@kernel.org
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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This introduces a test for IPSec offload over bonding, utilizing netdevsim
for the testing process, as veth interfaces do not support IPSec offload.
The test will ensure that the IPSec offload functionality remains operational
even after a failover event occurs in the bonding configuration.
Here is the test result:
TEST: bond_ipsec_offload (active_slave eth0) [ OK ]
TEST: bond_ipsec_offload (active_slave eth1) [ OK ]
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Link: https://patch.msgid.link/20250925023304.472186-2-liuhangbin@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Madhavan Srinivasan:
- powerpc support for BPF arena and arena atomics
- Patches to switch to msi parent domain (per-device MSI domains)
- Add a lock contention tracepoint in the queued spinlock slowpath
- Fixes for underflow in pseries/powernv msi and pci paths
- Switch from legacy-of-mm-gpiochip dependency to platform driver
- Fixes for handling TLB misses
- Introduce support for powerpc papr-hvpipe
- Add vpa-dtl PMU driver for pseries platform
- Misc fixes and cleanups
Thanks to Aboorva Devarajan, Aditya Bodkhe, Andrew Donnellan, Athira
Rajeev, Cédric Le Goater, Christophe Leroy, Erhard Furtner, Gautam
Menghani, Geert Uytterhoeven, Haren Myneni, Hari Bathini, Joe Lawrence,
Kajol Jain, Kienan Stewart, Linus Walleij, Mahesh Salgaonkar, Nam Cao,
Nicolas Schier, Nysal Jan K.A., Ritesh Harjani (IBM), Ruben Wauters,
Saket Kumar Bhaskar, Shashank MS, Shrikanth Hegde, Tejas Manhas, Thomas
Gleixner, Thomas Huth, Thorsten Blum, Tyrel Datwyler, and Venkat Rao
Bagalkote.
* tag 'powerpc-6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (49 commits)
powerpc/pseries: Define __u{8,32} types in papr_hvpipe_hdr struct
genirq/msi: Remove msi_post_free()
powerpc/perf/vpa-dtl: Add documentation for VPA dispatch trace log PMU
powerpc/perf/vpa-dtl: Handle the writing of perf record when aux wake up is needed
powerpc/perf/vpa-dtl: Add support to capture DTL data in aux buffer
powerpc/perf/vpa-dtl: Add support to setup and free aux buffer for capturing DTL data
docs: ABI: sysfs-bus-event_source-devices-vpa-dtl: Document sysfs event format entries for vpa_dtl pmu
powerpc/vpa_dtl: Add interface to expose vpa dtl counters via perf
powerpc/time: Expose boot_tb via accessor
powerpc/32: Remove PAGE_KERNEL_TEXT to fix startup failure
powerpc/fprobe: fix updated fprobe for function-graph tracer
powerpc/ftrace: support CONFIG_FUNCTION_GRAPH_RETVAL
powerpc64/modules: replace stub allocation sentinel with an explicit counter
powerpc64/modules: correctly iterate over stubs in setup_ftrace_ool_stubs
powerpc/ftrace: ensure ftrace record ops are always set for NOPs
powerpc/603: Really copy kernel PGD entries into all PGDIRs
powerpc/8xx: Remove left-over instruction and comments in DataStoreTLBMiss handler
powerpc/pseries: HVPIPE changes to support migration
powerpc/pseries: Enable hvpipe with ibm,set-system-parameter RTAS
powerpc/pseries: Enable HVPIPE event message interrupt
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Paul Walmsley
- Replacement of __ASSEMBLY__ with __ASSEMBLER__ in header files (other
architectures have already merged this type of cleanup)
- The introduction of ioremap_wc() for RISC-V
- Cleanup of the RISC-V kprobes code to use mostly-extant macros rather
than open code
- A RISC-V kprobes unit test
- An architecture-specific endianness swap macro set implementation,
leveraging some dedicated RISC-V instructions for this purpose if
they are available
- The ability to identity and communicate to userspace the presence
of a MIPS P8700-specific ISA extension, and to leverage its
MIPS-specific PAUSE implementation in cpu_relax()
- Several other miscellaneous cleanups
* tag 'riscv-for-linus-6.18-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (39 commits)
riscv: errata: Fix the PAUSE Opcode for MIPS P8700
riscv: hwprobe: Document MIPS xmipsexectl vendor extension
riscv: hwprobe: Add MIPS vendor extension probing
riscv: Add xmipsexectl instructions
riscv: Add xmipsexectl as a vendor extension
dt-bindings: riscv: Add xmipsexectl ISA extension description
riscv: cpufeature: add validation for zfa, zfh and zfhmin
perf: riscv: skip empty batches in counter start
selftests: riscv: Add README for RISC-V KSelfTest
riscv: sbi: Switch to new sys-off handler API
riscv: Move vendor errata definitions to new header
RISC-V: ACPI: enable parsing the BGRT table
riscv: Enable ARCH_HAVE_NMI_SAFE_CMPXCHG
riscv: pi: use 'targets' instead of extra-y in Makefile
riscv: introduce asm/swab.h
riscv: mmap(): use unsigned offset type in riscv_sys_mmap
drivers/perf: riscv: Remove redundant ternary operators
riscv: mm: Use mmu-type from FDT to limit SATP mode
riscv: mm: Return intended SATP mode for noXlvl options
riscv: kprobes: Remove duplication of RV_EXTRACT_ITYPE_IMM
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"There's good stuff across the board, including some nice mm
improvements for CPUs with the 'noabort' BBML2 feature and a clever
patch to allow ptdump to play nicely with block mappings in the
vmalloc area.
Confidential computing:
- Add support for accepting secrets from firmware (e.g. ACPI CCEL)
and mapping them with appropriate attributes.
CPU features:
- Advertise atomic floating-point instructions to userspace
- Extend Spectre workarounds to cover additional Arm CPU variants
- Extend list of CPUs that support break-before-make level 2 and
guarantee not to generate TLB conflict aborts for changes of
mapping granularity (BBML2_NOABORT)
- Add GCS support to our uprobes implementation.
Documentation:
- Remove bogus SME documentation concerning register state when
entering/exiting streaming mode.
Entry code:
- Switch over to the generic IRQ entry code (GENERIC_IRQ_ENTRY)
- Micro-optimise syscall entry path with a compiler branch hint.
Memory management:
- Enable huge mappings in vmalloc space even when kernel page-table
dumping is enabled
- Tidy up the types used in our early MMU setup code
- Rework rodata= for closer parity with the behaviour on x86
- For CPUs implementing BBML2_NOABORT, utilise block mappings in the
linear map even when rodata= applies to virtual aliases
- Don't re-allocate the virtual region between '_text' and '_stext',
as doing so confused tools parsing /proc/vmcore.
Miscellaneous:
- Clean-up Kconfig menuconfig text for architecture features
- Avoid redundant bitmap_empty() during determination of supported
SME vector lengths
- Re-enable warnings when building the 32-bit vDSO object
- Avoid breaking our eggs at the wrong end.
Perf and PMUs:
- Support for v3 of the Hisilicon L3C PMU
- Support for Hisilicon's MN and NoC PMUs
- Support for Fujitsu's Uncore PMU
- Support for SPE's extended event filtering feature
- Preparatory work to enable data source filtering in SPE
- Support for multiple lanes in the DWC PCIe PMU
- Support for i.MX94 in the IMX DDR PMU driver
- MAINTAINERS update (Thank you, Yicong)
- Minor driver fixes (PERF_IDX2OFF() overflow, CMN register offsets).
Selftests:
- Add basic LSFE check to the existing hwcaps test
- Support nolibc in GCS tests
- Extend SVE ptrace test to pass unsupported regsets and invalid
vector lengths
- Minor cleanups (typos, cosmetic changes).
System registers:
- Fix ID_PFR1_EL1 definition
- Fix incorrect signedness of some fields in ID_AA64MMFR4_EL1
- Sync TCR_EL1 definition with the latest Arm ARM (L.b)
- Be stricter about the input fed into our AWK sysreg generator
script
- Typo fixes and removal of redundant definitions.
ACPI, EFI and PSCI:
- Decouple Arm's "Software Delegated Exception Interface" (SDEI)
support from the ACPI GHES code so that it can be used by platforms
booted with device-tree
- Remove unnecessary per-CPU tracking of the FPSIMD state across EFI
runtime calls
- Fix a node refcount imbalance in the PSCI device-tree code.
CPU Features:
- Ensure register sanitisation is applied to fields in ID_AA64MMFR4
- Expose AIDR_EL1 to userspace via sysfs, primarily so that KVM
guests can reliably query the underlying CPU types from the VMM
- Re-enabling of SME support (CONFIG_ARM64_SME) as a result of fixes
to our context-switching, signal handling and ptrace code"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (93 commits)
arm64: cpufeature: Remove duplicate asm/mmu.h header
arm64: Kconfig: Make CPU_BIG_ENDIAN depend on BROKEN
perf/dwc_pcie: Fix use of uninitialized variable
arm/syscalls: mark syscall invocation as likely in invoke_syscall
Documentation: hisi-pmu: Add introduction to HiSilicon V3 PMU
Documentation: hisi-pmu: Fix of minor format error
drivers/perf: hisi: Add support for L3C PMU v3
drivers/perf: hisi: Refactor the event configuration of L3C PMU
drivers/perf: hisi: Extend the field of tt_core
drivers/perf: hisi: Extract the event filter check of L3C PMU
drivers/perf: hisi: Simplify the probe process of each L3C PMU version
drivers/perf: hisi: Export hisi_uncore_pmu_isr()
drivers/perf: hisi: Relax the event ID check in the framework
perf: Fujitsu: Add the Uncore PMU driver
arm64: map [_text, _stext) virtual address range non-executable+read-only
arm64/sysreg: Update TCR_EL1 register
arm64: Enable vmalloc-huge with ptdump
arm64: cpufeature: add Neoverse-V3AE to BBML2 allow list
arm64: errata: Apply workarounds for Neoverse-V3AE
arm64: cputype: Add Neoverse-V3AE definitions
...
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This also does not have the non-experimental version, so converted to FO.
The comment in .pkt explains the detailed scenario.
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250927213022.1850048-14-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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sockopt-fastopen-key.pkt does not have the non-experimental
version, so the Experimental version is converted, FOEXP -> FO.
The test sets net.ipv4.tcp_fastopen_key=0-0-0-0 and instead
sets another key via setsockopt(TCP_FASTOPEN_KEY).
The first listener generates a valid cookie in response to TFO
option without cookie, and the second listner creates a TFO socket
using the valid cookie.
TCP_FASTOPEN_KEY is adjusted to use the common key in default.sh
so that we can use TFO_COOKIE and support dualstack. Similarly,
TFO_COOKIE_ZERO for the 0-0-0-0 key is defined.
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250927213022.1850048-13-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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These changes are applied to follow the imported packetdrill tests.
* Call setsockopt(TCP_FASTOPEN)
* Remove unnecessary accept() delay
* Add assertion for TCP states
* Rename to tcp_fastopen_server_trigger-rst-reconnect.pkt.
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250927213022.1850048-12-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This imports the non-experimental version of opt34/*-trigger-rst.pkt.
| accept() | SYN data |
-----------------------------------+----------+----------+
listener-closed-trigger-rst.pkt | no | unread |
unread-data-closed-trigger-rst.pkt | yes | unread |
Both files test that close()ing a SYN_RECV socket with unread SYN data
triggers RST.
The files are renamed to have the common prefix, trigger-rst.
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250927213022.1850048-11-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This imports the non-experimental version of opt34/reset-*.pkt.
| Child | RST | sk_err |
---------------------------------+---------+-------------------------------+---------+
reset-after-accept.pkt | TFO | after accept(), SYN_RECV | read() |
reset-close-with-unread-data.pkt | TFO | after accept(), SYN_RECV | write() |
reset-before-accept.pkt | TFO | before accept(), SYN_RECV | read() |
reset-non-tfo-socket.pkt | non-TFO | before accept(), ESTABLISHED | write() |
The first 3 files test scenarios where a SYN_RECV socket receives RST
before/after accept() and data in SYN must be read() without error,
but the following read() or fist write() will return ECONNRESET.
The last test is similar but with non-TFO socket.
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250927213022.1850048-10-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This imports the non-experimental version of icmp-before-accept.pkt.
This file tests the scenario where an ICMP unreachable packet for a
not-yet-accept()ed socket changes its state to TCP_CLOSE, but the
SYN data must be read without error, and the following read() returns
EHOSTUNREACH.
Note that this test support only IPv4 as icmp is used.
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250927213022.1850048-9-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This imports the non-experimental version of fin-close-socket.pkt.
This file tests the scenario where a TFO child socket's state
transitions from SYN_RECV to CLOSE_WAIT before accept()ed.
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250927213022.1850048-8-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The only difference between non-experimental vs experimental TFO
option handling is SYN+ACK generation.
When tcp_parse_fastopen_option() parses a TFO option, it sets
tcp_fastopen_cookie.exp to false if the option number is 34,
and true if 255.
The value is carried to tcp_options_write() to generate a TFO option
with the same option number.
Other than that, all the TFO handling is the same and the kernel must
generate the same cookie regardless of the option number.
Let's add a test for the handling so that we can consolidate
fastopen/server/ tests and fastopen/server/opt34 tests.
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250927213022.1850048-7-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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TFO_SERVER_WO_SOCKOPT1 is no longer enabled by default, and
each server test requires setsockopt(TCP_FASTOPEN).
Let's add a basic test for TFO_SERVER_WO_SOCKOPT1.
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250927213022.1850048-6-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This imports basic TFO server tests from google/packetdrill.
The repository has two versions of tests for most scenarios; one uses
the non-experimental option (34), and the other uses the experimental
option (255) with 0xF989.
This only imports the following tests of the non-experimental version
placed in [0]. I will add a specific test for the experimental option
handling later.
| TFO | Cookie | Payload |
---------------------------+-----+--------+---------+
basic-rw.pkt | yes | yes | yes |
basic-zero-payload.pkt | yes | yes | no |
basic-cookie-not-reqd.pkt | yes | no | yes |
basic-non-tfo-listener.pkt | no | yes | yes |
pure-syn-data.pkt | yes | no | yes |
The original pure-syn-data.pkt missed setsockopt(TCP_FASTOPEN) and did
not test TFO server in some scenarios unintentionally, so setsockopt()
is added where needed. In addition, non-TFO scenario is stripped as
it is covered by basic-non-tfo-listener.pkt. Also, I added basic- prefix.
Link: https://github.com/google/packetdrill/tree/bfc96251310f/gtests/net/tcp/fastopen/server/opt34 #[0]
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250927213022.1850048-5-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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TCP Fast Open cookie is generated in __tcp_fastopen_cookie_gen_cipher().
The cookie value is generated from src/dst IPs and a key configured by
setsockopt(TCP_FASTOPEN_KEY) or net.ipv4.tcp_fastopen_key.
The default.sh sets net.ipv4.tcp_fastopen_key, and the original packetdrill
defines the corresponding cookie as TFO_COOKIE in run_all.py. [0]
Then, each test does not need to care about the value, and we can easily
update TFO_COOKIE in case __tcp_fastopen_cookie_gen_cipher() changes the
algorithm.
However, some tests use the bare hex value for specific IPv4 addresses
and do not support IPv6.
Let's define the same TFO_COOKIE in ksft_runner.sh.
We will replace such bare hex values with TFO_COOKIE except for a single
test for setsockopt(TCP_FASTOPEN_KEY).
Link: https://github.com/google/packetdrill/blob/7230b3990f94/gtests/net/packetdrill/run_all.py#L65 #[0]
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250927213022.1850048-4-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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To enable TCP Fast Open on a server, net.ipv4.tcp_fastopen must
have 0x2 (TFO_SERVER_ENABLE), and we need to do either
1. Call setsockopt(TCP_FASTOPEN) for the socket
2. Set 0x400 (TFO_SERVER_WO_SOCKOPT1) additionally to net.ipv4.tcp_fastopen
The default.sh sets 0x70403 so that each test does not need setsockopt().
(0x1 is TFO_CLIENT_ENABLE, and 0x70000 is ...???)
However, some tests overwrite net.ipv4.tcp_fastopen without
TFO_SERVER_WO_SOCKOPT1 and forgot setsockopt(TCP_FASTOPEN).
For example, pure-syn-data.pkt [0] tests non-TFO servers unintentionally,
except in the first scenario.
To prevent such an accident, let's require explicit setsockopt().
TFO_CLIENT_ENABLE is necessary for
tcp_syscall_bad_arg_fastopen-invalid-buf-ptr.pkt.
Link: https://github.com/google/packetdrill/blob/bfc96251310f/gtests/net/tcp/fastopen/server/opt34/pure-syn-data.pkt #[0]
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250927213022.1850048-3-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The cited commit forgot to update the ktap_set_plan call.
ktap_set_plan sets the number of tests (KSFT_NUM_TESTS), which must
match the number of executed tests (KTAP_CNT_PASS + KTAP_CNT_SKIP +
KTAP_CNT_XFAIL) in ktap_finished.
Otherwise, the selftest exit()s with 1.
Let's adjust KSFT_NUM_TESTS based on supported protocols.
While at it, misalignment is fixed up.
Fixes: a5c10aa3d1ba ("selftests/net: packetdrill: Support single protocol test.")
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250927213022.1850048-2-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Here are a few sub-tests for mptcp_join.sh, validating the new 'laminar'
endpoint type.
In a setup where subflows created using the routing rules would be
rejected by the listener, and where the latter announces one IP address,
some cases are verified:
- Without any 'laminar' endpoints: no new subflows are created.
- With one 'laminar' endpoint: a second subflow is created.
- With multiple 'laminar' endpoints: 2 IPv4 subflows are created.
- With one 'laminar' endpoint, but the server announcing a second IP
address, only one subflow is created.
- With one 'laminar' + 'subflow' endpoint, the same endpoint is only
used once.
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250927-net-next-mptcp-rcv-path-imp-v1-8-5da266aa9c1a@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull seccomp update from Kees Cook:
- Fix race with WAIT_KILLABLE_RECV (Johannes Nixdorf)
* tag 'seccomp-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
selftests/seccomp: Add a test for the WAIT_KILLABLE_RECV fast reply race
seccomp: Fix a race with WAIT_KILLABLE_RECV if the tracer replies too fast
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git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull namespace updates from Christian Brauner:
"This contains a larger set of changes around the generic namespace
infrastructure of the kernel.
Each specific namespace type (net, cgroup, mnt, ...) embedds a struct
ns_common which carries the reference count of the namespace and so
on.
We open-coded and cargo-culted so many quirks for each namespace type
that it just wasn't scalable anymore. So given there's a bunch of new
changes coming in that area I've started cleaning all of this up.
The core change is to make it possible to correctly initialize every
namespace uniformly and derive the correct initialization settings
from the type of the namespace such as namespace operations, namespace
type and so on. This leaves the new ns_common_init() function with a
single parameter which is the specific namespace type which derives
the correct parameters statically. This also means the compiler will
yell as soon as someone does something remotely fishy.
The ns_common_init() addition also allows us to remove ns_alloc_inum()
and drops any special-casing of the initial network namespace in the
network namespace initialization code that Linus complained about.
Another part is reworking the reference counting. The reference
counting was open-coded and copy-pasted for each namespace type even
though they all followed the same rules. This also removes all open
accesses to the reference count and makes it private and only uses a
very small set of dedicated helpers to manipulate them just like we do
for e.g., files.
In addition this generalizes the mount namespace iteration
infrastructure introduced a few cycles ago. As reminder, the vfs makes
it possible to iterate sequentially and bidirectionally through all
mount namespaces on the system or all mount namespaces that the caller
holds privilege over. This allow userspace to iterate over all mounts
in all mount namespaces using the listmount() and statmount() system
call.
Each mount namespace has a unique identifier for the lifetime of the
systems that is exposed to userspace. The network namespace also has a
unique identifier working exactly the same way. This extends the
concept to all other namespace types.
The new nstree type makes it possible to lookup namespaces purely by
their identifier and to walk the namespace list sequentially and
bidirectionally for all namespace types, allowing userspace to iterate
through all namespaces. Looking up namespaces in the namespace tree
works completely locklessly.
This also means we can move the mount namespace onto the generic
infrastructure and remove a bunch of code and members from struct
mnt_namespace itself.
There's a bunch of stuff coming on top of this in the future but for
now this uses the generic namespace tree to extend a concept
introduced first for pidfs a few cycles ago. For a while now we have
supported pidfs file handles for pidfds. This has proven to be very
useful.
This extends the concept to cover namespaces as well. It is possible
to encode and decode namespace file handles using the common
name_to_handle_at() and open_by_handle_at() apis.
As with pidfs file handles, namespace file handles are exhaustive,
meaning it is not required to actually hold a reference to nsfs in
able to decode aka open_by_handle_at() a namespace file handle.
Instead the FD_NSFS_ROOT constant can be passed which will let the
kernel grab a reference to the root of nsfs internally and thus decode
the file handle.
Namespaces file descriptors can already be derived from pidfds which
means they aren't subject to overmount protection bugs. IOW, it's
irrelevant if the caller would not have access to an appropriate
/proc/<pid>/ns/ directory as they could always just derive the
namespace based on a pidfd already.
It has the same advantage as pidfds. It's possible to reliably and for
the lifetime of the system refer to a namespace without pinning any
resources and to compare them trivially.
Permission checking is kept simple. If the caller is located in the
namespace the file handle refers to they are able to open it otherwise
they must hold privilege over the owning namespace of the relevant
namespace.
The namespace file handle layout is exposed as uapi and has a stable
and extensible format. For now it simply contains the namespace
identifier, the namespace type, and the inode number. The stable
format means that userspace may construct its own namespace file
handles without going through name_to_handle_at() as they are already
allowed for pidfs and cgroup file handles"
* tag 'namespace-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (65 commits)
ns: drop assert
ns: move ns type into struct ns_common
nstree: make struct ns_tree private
ns: add ns_debug()
ns: simplify ns_common_init() further
cgroup: add missing ns_common include
ns: use inode initializer for initial namespaces
selftests/namespaces: verify initial namespace inode numbers
ns: rename to __ns_ref
nsfs: port to ns_ref_*() helpers
net: port to ns_ref_*() helpers
uts: port to ns_ref_*() helpers
ipv4: use check_net()
net: use check_net()
net-sysfs: use check_net()
user: port to ns_ref_*() helpers
time: port to ns_ref_*() helpers
pid: port to ns_ref_*() helpers
ipc: port to ns_ref_*() helpers
cgroup: port to ns_ref_*() helpers
...
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git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs mount updates from Christian Brauner:
"This contains some work around mount api handling:
- Output the warning message for mnt_too_revealing() triggered during
fsmount() to the fscontext log. This makes it possible for the
mount tool to output appropriate warnings on the command line.
For example, with the newest fsopen()-based mount(8) from
util-linux, the error messages now look like:
# mount -t proc proc /tmp
mount: /tmp: fsmount() failed: VFS: Mount too revealing.
dmesg(1) may have more information after failed mount system call.
- Do not consume fscontext log entries when returning -EMSGSIZE
Userspace generally expects APIs that return -EMSGSIZE to allow for
them to adjust their buffer size and retry the operation.
However, the fscontext log would previously clear the message even
in the -EMSGSIZE case.
Given that it is very cheap for us to check whether the buffer is
too small before we remove the message from the ring buffer, let's
just do that instead.
- Drop an unused argument from do_remount()"
* tag 'vfs-6.18-rc1.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
vfs: fs/namespace.c: remove ms_flags argument from do_remount
selftests/filesystems: add basic fscontext log tests
fscontext: do not consume log entries when returning -EMSGSIZE
vfs: output mount_too_revealing() errors to fscontext
docs/vfs: Remove mentions to the old mount API helpers
fscontext: add custom-prefix log helpers
fs: Remove mount_bdev
fs: Remove mount_nodev
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git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull misc vfs updates from Christian Brauner:
"This contains the usual selections of misc updates for this cycle.
Features:
- Add "initramfs_options" parameter to set initramfs mount options.
This allows to add specific mount options to the rootfs to e.g.,
limit the memory size
- Add RWF_NOSIGNAL flag for pwritev2()
Add RWF_NOSIGNAL flag for pwritev2. This flag prevents the SIGPIPE
signal from being raised when writing on disconnected pipes or
sockets. The flag is handled directly by the pipe filesystem and
converted to the existing MSG_NOSIGNAL flag for sockets
- Allow to pass pid namespace as procfs mount option
Ever since the introduction of pid namespaces, procfs has had very
implicit behaviour surrounding them (the pidns used by a procfs
mount is auto-selected based on the mounting process's active
pidns, and the pidns itself is basically hidden once the mount has
been constructed)
This implicit behaviour has historically meant that userspace was
required to do some special dances in order to configure the pidns
of a procfs mount as desired. Examples include:
* In order to bypass the mnt_too_revealing() check, Kubernetes
creates a procfs mount from an empty pidns so that user
namespaced containers can be nested (without this, the nested
containers would fail to mount procfs)
But this requires forking off a helper process because you cannot
just one-shot this using mount(2)
* Container runtimes in general need to fork into a container
before configuring its mounts, which can lead to security issues
in the case of shared-pidns containers (a privileged process in
the pidns can interact with your container runtime process)
While SUID_DUMP_DISABLE and user namespaces make this less of an
issue, the strict need for this due to a minor uAPI wart is kind
of unfortunate
Things would be much easier if there was a way for userspace to
just specify the pidns they want. So this pull request contains
changes to implement a new "pidns" argument which can be set
using fsconfig(2):
fsconfig(procfd, FSCONFIG_SET_FD, "pidns", NULL, nsfd);
fsconfig(procfd, FSCONFIG_SET_STRING, "pidns", "/proc/self/ns/pid", 0);
or classic mount(2) / mount(8):
// mount -t proc -o pidns=/proc/self/ns/pid proc /tmp/proc
mount("proc", "/tmp/proc", "proc", MS_..., "pidns=/proc/self/ns/pid");
Cleanups:
- Remove the last references to EXPORT_OP_ASYNC_LOCK
- Make file_remove_privs_flags() static
- Remove redundant __GFP_NOWARN when GFP_NOWAIT is used
- Use try_cmpxchg() in start_dir_add()
- Use try_cmpxchg() in sb_init_done_wq()
- Replace offsetof() with struct_size() in ioctl_file_dedupe_range()
- Remove vfs_ioctl() export
- Replace rwlock() with spinlock in epoll code as rwlock causes
priority inversion on preempt rt kernels
- Make ns_entries in fs/proc/namespaces const
- Use a switch() statement() in init_special_inode() just like we do
in may_open()
- Use struct_size() in dir_add() in the initramfs code
- Use str_plural() in rd_load_image()
- Replace strcpy() with strscpy() in find_link()
- Rename generic_delete_inode() to inode_just_drop() and
generic_drop_inode() to inode_generic_drop()
- Remove unused arguments from fcntl_{g,s}et_rw_hint()
Fixes:
- Document @name parameter for name_contains_dotdot() helper
- Fix spelling mistake
- Always return zero from replace_fd() instead of the file descriptor
number
- Limit the size for copy_file_range() in compat mode to prevent a
signed overflow
- Fix debugfs mount options not being applied
- Verify the inode mode when loading it from disk in minixfs
- Verify the inode mode when loading it from disk in cramfs
- Don't trigger automounts with RESOLVE_NO_XDEV
If openat2() was called with RESOLVE_NO_XDEV it didn't traverse
through automounts, but could still trigger them
- Add FL_RECLAIM flag to show_fl_flags() macro so it appears in
tracepoints
- Fix unused variable warning in rd_load_image() on s390
- Make INITRAMFS_PRESERVE_MTIME depend on BLK_DEV_INITRD
- Use ns_capable_noaudit() when determining net sysctl permissions
- Don't call path_put() under namespace semaphore in listmount() and
statmount()"
* tag 'vfs-6.18-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (38 commits)
fcntl: trim arguments
listmount: don't call path_put() under namespace semaphore
statmount: don't call path_put() under namespace semaphore
pid: use ns_capable_noaudit() when determining net sysctl permissions
fs: rename generic_delete_inode() and generic_drop_inode()
init: INITRAMFS_PRESERVE_MTIME should depend on BLK_DEV_INITRD
initramfs: Replace strcpy() with strscpy() in find_link()
initrd: Use str_plural() in rd_load_image()
initramfs: Use struct_size() helper to improve dir_add()
initrd: Fix unused variable warning in rd_load_image() on s390
fs: use the switch statement in init_special_inode()
fs/proc/namespaces: make ns_entries const
filelock: add FL_RECLAIM to show_fl_flags() macro
eventpoll: Replace rwlock with spinlock
selftests/proc: add tests for new pidns APIs
procfs: add "pidns" mount option
pidns: move is-ancestor logic to helper
openat2: don't trigger automounts with RESOLVE_NO_XDEV
namei: move cross-device check to __traverse_mounts
namei: remove LOOKUP_NO_XDEV check from handle_mounts
...
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The fast path through a write will require replacing a single node in
the tree. Using a sheaf (32 nodes) is too heavy for the fast path, so
special case the node store operation by just allocating one node in the
maple state.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
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Use prefilled sheaves instead of bulk allocations. This should speed up
the allocations and the return path of unused allocations.
Remove the push and pop of nodes from the maple state as this is now
handled by the slab layer with sheaves.
Testing has been removed as necessary since the features of the tree
have been reduced.
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
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Add the prefilled sheaf structs to the slab header and the associated
functions to the testing/shared/linux.c file.
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
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liburcu doesn't have kfree_rcu (or anything similar). Despite that, we
can hack around it in a trivial fashion, by adding a wrapper.
The wrapper only works for maple_nodes because we cannot get the
kmem_cache pointer any other way in the test code.
Link: https://lore.kernel.org/all/20250812162124.59417-1-pfalcato@suse.de/
Suggested-by: Pedro Falcato <pfalcato@suse.de>
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
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There's some duplicated code and we are about to add more functionality
in maple-shared.h that we will need in the userspace maple test to be
available, so include it via maple-shim.c
Co-developed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
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The slab changes for sheaves requires more effort in the testing code.
Unite all the kmem_cache work into the tools/include slab header for
both the vma and maple tree testing.
The vma test code also requires importing more #defines to allow for
seamless use of the shared kmem_cache code.
This adds the pthread header to the slab header in the tools directory
to allow for the pthread_mutex in linux.c.
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
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Add the reset of the ref count in vma_lock_init(). This is needed if
the vma memory is not zeroed on allocation.
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
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Bulk insert mode was added to facilitate forking faster, but forking now
uses __mt_dup() to duplicate the tree.
The addition of sheaves has made the bulk allocations difficult to
maintain - since the expected entries would preallocate into the maple
state. A big part of the maple state node allocation was the ability to
push nodes back onto the state for later use, which was essential to the
bulk insert algorithm.
Remove mas_expected_entries() and mas_destroy_rebalance() functions as
well as the MA_STATE_BULK and MA_STATE_REBALANCE maple state flags since
there are no users anymore. Drop the associated testing as well.
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
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We do not need to references arguments just to avoid compiler warnings,
the warning in question does not arise here, so remove all of the
instances of '(void)xxx' introduced purely to avoid this warning.
As reported by WagYuli in the referenced mail, GCC 8.3 and before will
have issues compiling this file if parameter names are not provided, so
ensure these are always provided.
Finally, perform a trivial fix up of kmem_cache_alloc() which technically
has parameters in the incorrect order (as reported by Vlastimil Babka
off-list).
Link: https://lkml.kernel.org/r/20250826102824.22730-1-lorenzo.stoakes@oracle.com
Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reported-by: WangYuli <wangyuli@uniontech.com>
Closes: https://lore.kernel.org/linux-mm/EFCEBE7E301589DE+20250729084700.208767-1-wangyuli@uniontech.com/
Reported-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Jann Horn <jannh@google.com>
Cc: WangYuli <wangyuli@uniontech.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
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Add a new selftest to verify whether the `ksm_merging_pages` counter in
`mm_struct` is not inherited by a child process after fork. This helps
ensure correctness of KSM accounting across process creation.
Link: https://lkml.kernel.org/r/e7bb17d374133bd31a3e423aa9e46e1122e74971.1758648700.git.donettom@linux.ibm.com
Signed-off-by: Donet Tom <donettom@linux.ibm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Aboorva Devarajan <aboorvad@linux.ibm.com>
Cc: Chengming Zhou <chengming.zhou@linux.dev>
Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: xu xin <xu.xin16@zte.com.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-next
ASoC: Updates for v6.18 round 2
Some more updates for v6.18, mostly fixes for the earlier pull request
with some cleanups and more minor fixes for older code. We do have one
new driver, the TI TAS2783A, and some quirks for new platforms.
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Introduce a kernel module that will exercise lock acquisition in the NMI
path, and bias toward creating contention such that NMI waiters end up
being non-head waiters. Prior to the rqspinlock fix made in the commit
0d80e7f951be ("rqspinlock: Choose trylock fallback for NMI waiters"), it
was possible for the queueing path of non-head waiters to get stuck in
NMI, which this stress test reproduces fairly easily with just 3 CPUs.
Both AA and ABBA flavors are supported, and it will serve as a test case
for future fixes that address this corner case. More information about
the problem in question is available in the commit cited above. When the
fix is reverted, this stress test will lock up the system.
To enable this test automatically through the test_progs infrastructure,
add a load_module_params API to exercise both AA and ABBA cases when
running the test.
Note that the test runs for at most 5 seconds, and becomes a noop after
that, in order to allow the system to make forward progress. In
addition, CPU 0 is always kept untouched by the created threads and
NMIs. The test will automatically scale to the number of available
online CPUs.
Note that at least 3 CPUs are necessary to run this test, hence skip the
selftest in case the environment has less than 3 CPUs available.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250927205304.199760-1-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add a small test case which adds two programs - one calling the other
through a tailcall - and check that BPF rejects them in case of different
expected_attach_type values:
# ./vmtest.sh -- ./test_progs -t xdp_devmap
[...]
#641/1 xdp_devmap_attach/DEVMAP with programs in entries:OK
#641/2 xdp_devmap_attach/DEVMAP with frags programs in entries:OK
#641/3 xdp_devmap_attach/Verifier check of DEVMAP programs:OK
#641/4 xdp_devmap_attach/DEVMAP with programs in entries on veth:OK
#641 xdp_devmap_attach:OK
Summary: 2/4 PASSED, 0 SKIPPED, 0 FAILED
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/r/20250926171201.188490-2-daniel@iogearbox.net
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Mention how it would be nice if new code used defer. Also if it does that
in dirtying helpers, how it would be nice if these were named adf_*.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/0764bdb9266cd516da23ddeec110e01118cf981e.1758821127.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Most forwarding tests invoke forwarding_enable() to enable the router and
forwarding_restore() to restore the original configuration. Add a helper,
adf_forwarding_enable(), which is like forwarding_enable(), but takes care
of scheduling the cleanup automatically.
Convert the tests that currently use defer to schedule the cleanup.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/78b752c40069cde21c44dcf4c7b966a76a0eef2c.1758821127.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Most forwarding tests invoke simple_if_init() to set up a VRF-based "host"
and simple_if_fini() to tear it down again. Add a helper,
adf_simple_if_init(), which is like simple_if_fini(), but takes care of
scheduling the cleanup automatically.
Convert the tests that currently use defer to schedule the cleanup.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/6b9ee1a7946a36fd32a47fdb1aa9325198ffc695.1758821127.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Most forwarding tests invoke vrf_prepare() to set up VRF forwarding and
vrf_cleanup() to restore the original configuration. Add a helper,
adf_vrf_prepare(), which is like vrf_prepare(), but takes care of
scheduling the cleanup automatically.
Convert a number of tests that currently use defer to schedule the cleanup.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/2f2000e54ae700d560a8d6128322dade3bd2207e.1758821127.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This test contains two autodefer-like helpers, but namespaces them as dfr_*
instead of adf_* like this patchset. Rename them.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/5f0c81b39e9e1f56f706cc4b53f82238a1d1e2f9.1758821127.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Rename this function to mark it as autodefer.
For details, see the discussion in the cover letter.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/93526ce79e635a3ec34753c796edf0c96711547d.1758821127.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Rename this function to mark it as autodefer.
For details, see the discussion in the cover letter.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/403143183373419e4a31df4665d6bfaa273eb761.1758821127.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
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Rename this function to mark it as autodefer.
For details, see the discussion in the cover letter.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/706327a5db660c7f18ba9fbfba7ce913da065e3e.1758821127.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
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Rename this function to mark it as autodefer.
For details, see the discussion in the cover letter.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/e5bf4cb3405fb50fe6e217a04268952e97410dc2.1758821127.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
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Rename this function to mark it as autodefer.
For details, see the discussion in the cover letter.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/475716ef792f5bd42e5c8ef1c3e287b1294f1630.1758821127.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
