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strerror() is commonly used.
For example in kselftest which currently needs to do an #ifdef NOLIBC to
handle the lack of strerror().
Keep it simple and reuse the output format of perror() for strerror().
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
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Some tests only make sense on nolibc. To avoid gaps in the test numbers
do to inline "#ifdef NOLIBC", add a condition to formally skip these
tests.
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
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The implementation always works on uintmax_t values.
This is inefficient when only 32bit are needed.
However for all functions this only happens for strtol() on 32bit
platforms.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://lore.kernel.org/r/20240425-nolibc-strtol-v1-2-bfeef7846902@weissschuh.net
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They are useful for users and necessary for strtol() and friends.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://lore.kernel.org/r/20240425-nolibc-strtol-v1-1-bfeef7846902@weissschuh.net
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run-tests.sh hides the output from the compiler unless the compilation
fails. To recognize newly introduced warnings use -Werror by default.
Also add a switch to disable -Werror in case the warnings are expected.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://lore.kernel.org/r/20240423-nolibc-werror-v1-1-e6f0bd66eb45@weissschuh.net
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On musl calls to brk() and sbrk() always fail with ENOMEM.
Detect this and skip the tests on musl.
Tested on glibc 2.39 and musl 1.2.5 in addition to nolibc.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://lore.kernel.org/r/20240424-nolibc-musl-brk-v1-1-b49882dd9a93@weissschuh.net
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Fix the following compiler warning on 32bit:
i386-linux-gcc -Os -fno-ident -fno-asynchronous-unwind-tables -std=c89 -W -Wall -Wextra -fno-stack-protector -m32 -mstack-protector-guard=global -fstack-protector-all -o nolibc-test \
-nostdlib -nostdinc -static -Isysroot/i386/include nolibc-test.c nolibc-test-linkage.c -lgcc
nolibc-test.c: In function 'expect_str_buf_eq':
nolibc-test.c:610:30: error: format '%lu' expects argument of type 'long unsigned int', but argument 2 has type 'size_t' {aka 'unsigned int'} [-Werror=format=]
610 | llen += printf(" = %lu <%s> ", expr, buf);
| ~~^ ~~~~
| | |
| | size_t {aka unsigned int}
| long unsigned int
| %u
Fixes: 1063649cf531 ("selftests/nolibc: Add tests for strlcat() and strlcpy()")
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
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fix the following warning:
proc-empty-vm.c:385:17: warning: ignoring return value of `write'
declared with attribute `warn_unused_result' [-Wunused-result]
385 | write(1, buf, rv);
| ^~~~~~~~~~~~~~~~~
Link: https://lkml.kernel.org/r/20240603124220.33778-1-amer.shanawany@gmail.com
Signed-off-by: Amer Al Shanawany <amer.shanawany@gmail.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/r/202404010211.ygidvMwa-lkp@intel.com/
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Swarup Laxman Kotiaklapudi <swarupkotikalapudi@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Userspace builds of the radix-tree testing suite fails because of patch
KUnit: add missing MODULE_DESCRIPTION() macros for lib/test_*.ko. Add the
proper defines to tools/testing/radix-tree/idr-test.c so
MODULE_DESCRIPTION has a definition. This allows the build to succeed.
Link: https://lkml.kernel.org/r/20240626232100.306130-1-sidhartha.kumar@oracle.com
Fixes: f069e33dafe1 ("KUnit: add missing MODULE_DESCRIPTION() macros for lib/test_*.ko")
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Jeff Johnson <quic_jjohnson@quicinc.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Use just added defer().
Reviewed-by: Petr Machata <petrm@nvidia.com>
Link: https://patch.msgid.link/20240627185502.3069139-4-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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This implements what I was describing in [1]. When writing a test
author can schedule cleanup / undo actions right after the creation
completes, eg:
cmd("touch /tmp/file")
defer(cmd, "rm /tmp/file")
defer() takes the function name as first argument, and the rest are
arguments for that function. defer()red functions are called in
inverse order after test exits. It's also possible to capture them
and execute earlier (in which case they get automatically de-queued).
undo = defer(cmd, "rm /tmp/file")
# ... some unsafe code ...
undo.exec()
As a nice safety all exceptions from defer()ed calls are captured,
printed, and ignored (they do make the test fail, however).
This addresses the common problem of exceptions in cleanup paths
often being unhandled, leading to potential leaks.
There is a global action queue, flushed by ksft_run(). We could support
function level defers too, I guess, but there's no immediate need..
Link: https://lore.kernel.org/all/877cedb2ki.fsf@nvidia.com/ # [1]
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Link: https://patch.msgid.link/20240627185502.3069139-3-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Exception handlers print the result and use continue
to skip the non-exception result printing. This makes
inserting common post-test code hard. Refactor to
avoid the continues and have only one ktap_result() call.
Reviewed-by: Petr Machata <petrm@nvidia.com>
Link: https://patch.msgid.link/20240627185502.3069139-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Extend the existing test to exercise UDP GSO egress through devices with
various offload capabilities, including lack of checksum offload, which is
the default case for TUN/TAP devices.
Test against a dummy device because it is simpler to set up then TUN/TAP.
Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20240626-linux-udpgso-v2-2-422dfcbd6b48@cloudflare.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Test if KVM emulates the APIC bus clock at the expected frequency when
userspace configures the frequency via KVM_CAP_X86_APIC_BUS_CYCLES_NS.
Set APIC timer's initial count to the maximum value and busy wait for 100
msec (largely arbitrary) using the TSC. Read the APIC timer's "current
count" to calculate the actual APIC bus clock frequency based on TSC
frequency.
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
Co-developed-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lore.kernel.org/r/2fccf35715b5ba8aec5e5708d86ad7015b8d74e6.1718214999.git.reinette.chatre@intel.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Execution of the 'make' command in the 'bench' subfolder causes the
following error:
$ make O=cpupower/build/ DESTDIR=cpupower/install/ -j8
" CC " cpupower/build//main.o
" CC " cpupower/build//parse.o
/bin/sh: 1: " CC "cpupower/build//system.o
CC : not found
make: *** [Makefile:21: cpupower/build//main.o] Error 127
make: *** Waiting for unfinished jobs....
/bin/sh: 1: CC : not found
/bin/sh: 1: CC : not found
make: *** [Makefile:21: cpupower/build//parse.o] Error 127
make: *** [Makefile:21: cpupower/build//system.o] Error 127
The makefile uses variables defined in the main project makefile and it
is not intended to run standalone. The reason is that 'bench' subproject
depends on the 'libcpupower' library, see the 'compile-bench' target in
the main makefile.
Add a check that prevents standalone execution of the 'bench' makefile.
Signed-off-by: Roman Storozhenko <romeusmeister@gmail.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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Currently, the -r/--repeat option accepts values from 0 and complains
for -1. The help section specifies:
-r, --repeat <n> repeat the workload replay N times (-1: infinite)
The -r -1 option raises an error because replay_repeat is defined as
an unsigned int.
In the current implementation, the workload is repeated n times when
-r <n> is used, except when n is 0.
When -r is set to 0, the workload is also repeated once. This happens
because when -r=0, the run_one_test function is not called. (Note that
mutex unlocking, which is essential for child threads spawned to emulate
the workload, happens in run_one_test.) However, mutex unlocking is
still performed in the destroy_tasks function. Thus, -r=0 results in the
workload running once coincidentally.
To clarify and maintain the existing logic for -r >= 1 (which runs the
workload the specified number of times) and to fix the issue with infinite
runs, make -r=0 perform an infinite run.
Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Madadi Vineeth Reddy <vineethr@linux.ibm.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Link: https://lore.kernel.org/r/20240628071821.15264-1-vineethr@linux.ibm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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./tools/perf/util/pmu.c:1776:49-50: Unneeded semicolon
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=9443
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Reviewed-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: https://lore.kernel.org/r/20240628053049.44521-1-yang.lee@linux.alibaba.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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Add udelay() for x86 tests to allow busy waiting in the guest for a
specific duration, and to match ARM and RISC-V's udelay() in the hopes
of eventually making udelay() available on all architectures.
Get the guest's TSC frequency using KVM_GET_TSC_KHZ and expose it to all
VMs via a new global, guest_tsc_khz. Assert that KVM_GET_TSC_KHZ returns
a valid frequency, instead of simply skipping tests, which would require
detecting which tests actually need/want udelay(). KVM hasn't returned an
error for KVM_GET_TSC_KHZ since commit cc578287e322 ("KVM: Infrastructure
for software and hardware based TSC rate scaling"), which predates KVM
selftests by 6+ years (KVM_GET_TSC_KHZ itself predates KVM selftest by 7+
years).
Note, if the GUEST_ASSERT() in udelay() somehow fires and the test doesn't
check for guest asserts, then the test will fail with a very cryptic
message. But fixing that, e.g. by automatically handling guest asserts,
is a much larger task, and practically speaking the odds of a test afoul
of this wart are infinitesimally small.
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lore.kernel.org/r/5aa86285d1c1d7fe1960e3fe490f4b22273977e6.1718214999.git.reinette.chatre@intel.com
Co-developed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
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It didn't use the passed field separator (using -x option) when it
prints the metric headers and always put "," between the fields.
Before:
$ sudo ./perf stat -a -x : --per-core -M tma_core_bound --metric-only true
core,cpus,% tma_core_bound: <<<--- here: "core,cpus," but ":" expected
S0-D0-C0:2:10.5:
S0-D0-C1:2:14.8:
S0-D0-C2:2:9.9:
S0-D0-C3:2:13.2:
After:
$ sudo ./perf stat -a -x : --per-core -M tma_core_bound --metric-only true
core:cpus:% tma_core_bound:
S0-D0-C0:2:10.5:
S0-D0-C1:2:15.0:
S0-D0-C2:2:16.5:
S0-D0-C3:2:12.5:
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: https://lore.kernel.org/r/20240628000604.1296808-2-namhyung@kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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The new --per-cluster option was added recently but it forgot to update
the aggr_header fields which are used for --metric-only option. And it
resulted in a segfault due to NULL string in fputs().
Fixes: cbc917a1b03b ("perf stat: Support per-cluster aggregation")
Reviewed-by: Yicong Yang <yangyicong@hisilicon.com>
Tested-by: Yicong Yang <yangyicong@hisilicon.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: https://lore.kernel.org/r/20240628000604.1296808-1-namhyung@kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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Ensure that a dead thread leader doesn't prevent installing new filters
with SECCOMP_FILTER_FLAG_TSYNC from other threads.
Signed-off-by: Andrei Vagin <avagin@google.com>
Link: https://lore.kernel.org/r/20240628021014.231976-5-avagin@google.com
Reviewed-by: Tycho Andersen <tandersen@netflix.com>
Signed-off-by: Kees Cook <kees@kernel.org>
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Add a new test case to check that SECCOMP_IOCTL_NOTIF_RECV returns when all
tasks have gone.
Signed-off-by: Andrei Vagin <avagin@google.com>
Link: https://lore.kernel.org/r/20240628021014.231976-4-avagin@google.com
Reviewed-by: Tycho Andersen <tandersen@netflix.com>
Signed-off-by: Kees Cook <kees@kernel.org>
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commit a9af47e382a4 ("iommufd/selftest: Test IOMMU_HWPT_GET_DIRTY_BITMAP")
added tests covering edge cases in the boundaries of iova bitmap. Although
it used buffer sizes thinking in PAGE_SIZE (4K) as opposed to the
MOCK_PAGE_SIZE (2K) that is used in iommufd mock selftests. This meant that
isn't correctly exercising everything specifically the u32 and 4K bitmap
test cases. Fix selftests buffer sizes to be based on mock page size.
Link: https://lore.kernel.org/r/20240627110105.62325-5-joao.m.martins@oracle.com
Reported-by: Kevin Tian <kevin.tian@intel.com>
Closes: https://lore.kernel.org/linux-iommu/96efb6cf-a41c-420f-9673-2f0b682cac8c@oracle.com/
Fixes: a9af47e382a4 ("iommufd/selftest: Test IOMMU_HWPT_GET_DIRTY_BITMAP")
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Tested-by: Matt Ochs <mochs@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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Add more tests for bitmaps smaller than or equal to an u8, though skip the
tests if the IOVA buffer size is smaller than the mock page size.
Link: https://lore.kernel.org/r/20240627110105.62325-4-joao.m.martins@oracle.com
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Tested-by: Matt Ochs <mochs@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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With 64k base pages, the first 128k iova length test requires less than a
byte for a bitmap, exposing a bug in the tests that assume that bitmaps are
at least a byte.
Rather than dealing with bytes, have _test_mock_dirty_bitmaps() pass the
number of bits. The caller functions are adjusted to also use bits as well,
and converting to bytes when clearing, allocating and freeing the bitmap.
Link: https://lore.kernel.org/r/20240627110105.62325-2-joao.m.martins@oracle.com
Reported-by: Matt Ochs <mochs@nvidia.com>
Fixes: a9af47e382a4 ("iommufd/selftest: Test IOMMU_HWPT_GET_DIRTY_BITMAP")
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Tested-by: Matt Ochs <mochs@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Pull turbostat fixes from Len Brown:
"Fix three recent minor turbostat regressions"
* tag 'v6.10-rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
tools/power turbostat: Add local build_bug.h header for snapshot target
tools/power turbostat: Fix unc freq columns not showing with '-q' or '-l'
tools/power turbostat: option '-n' is ambiguous
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If userspace program exits while the queue its subscribed to has packets
those need to be discarded.
commit dc21c6cc3d69 ("netfilter: nfnetlink_queue: acquire rcu_read_lock()
in instance_destroy_rcu()") fixed a (harmless) rcu splat that could be
triggered in this case.
Add a test case to cover this.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Currently the PMU counters test does a single CLFLUSH{,OPT} on the loop's
code, but due to speculative execution this might not cause LLC misses
within the measured section.
Instead of doing a single flush before the loop, do a cache flush on each
iteration of the loop to confuse the prediction and ensure that at least
one cache miss occurs within the measured section.
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
[sean: keep MFENCE, massage changelog]
Link: https://lore.kernel.org/r/20240628005558.3835480-3-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Tweak the macros in the PMU counters test to prepare for moving the
CLFLUSH+MFENCE instructions into the loop body, to fix an issue where
a single CLFUSH doesn't guarantee an LLC miss.
Link: https://lore.kernel.org/r/20240628005558.3835480-2-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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We cannot use CLONE_VFORK because we also need to wait for the timeout
signal.
Restore tests timeout by using the original fork() call in __run_test()
but also in __TEST_F_IMPL(). Also fix a race condition when waiting for
the test child process.
Because test metadata are shared between test processes, only the
parent process must set the test PID (child). Otherwise, t->pid may be
set to zero, leading to inconsistent error cases:
# RUN layout1.rule_on_mountpoint ...
# rule_on_mountpoint: Test ended in some other way [127]
# OK layout1.rule_on_mountpoint
ok 20 layout1.rule_on_mountpoint
As safeguards, initialize the "status" variable with a valid exit code,
and handle unknown test exits as errors.
The use of fork() introduces a new race condition in landlock/fs_test.c
which seems to be specific to hostfs bind mounts, but I haven't found
the root cause and it's difficult to trigger. I'll try to fix it with
another patch.
Cc: Christian Brauner <brauner@kernel.org>
Cc: Günther Noack <gnoack@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Will Drewry <wad@chromium.org>
Cc: stable@vger.kernel.org
Closes: https://lore.kernel.org/r/9341d4db-5e21-418c-bf9e-9ae2da7877e1@sirena.org.uk
Fixes: a86f18903db9 ("selftests/harness: Fix interleaved scheduling leading to race conditions")
Fixes: 24cf65a62266 ("selftests/harness: Share _metadata between forked processes")
Link: https://lore.kernel.org/r/20240621180605.834676-1-mic@digikod.net
Tested-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Mickaël Salaün <mic@digikod.net>
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The direct-call syscall dispatch function doesn't know that the exit()
and exit_group() syscall handlers don't return, so the call sites aren't
optimized accordingly.
Fix that by marking the exit syscall declarations __noreturn.
Fixes the following warnings:
vmlinux.o: warning: objtool: x64_sys_call+0x2804: __x64_sys_exit() is missing a __noreturn annotation
vmlinux.o: warning: objtool: ia32_sys_call+0x29b6: __ia32_sys_exit_group() is missing a __noreturn annotation
Fixes: 1e3ad78334a6 ("x86/syscall: Don't force use of indirect calls for system calls")
Closes: https://lkml.kernel.org/lkml/6dba9b32-db2c-4e6d-9500-7a08852f17a3@paulmck-laptop
Reported-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Paul E. McKenney <paulmck@kernel.org>
Link: https://lore.kernel.org/r/5d8882bc077d8eadcc7fd1740b56dfb781f12288.1719381528.git.jpoimboe@kernel.org
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Now that we support exporting mount options, via statmount(), add a test
to validate that it works.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Link: https://lore.kernel.org/r/cabe09f0933d9c522da6e7b6cc160254f4f6c3b9.1719257716.git.josef@toxicpanda.com
Reviewed-by: Jeff Layton <jlayton@kernel.org>
[brauner: simplify and fix]
Signed-off-by: Christian Brauner <brauner@kernel.org>
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This tests both statmount and listmount to make sure they work with the
extensions that allow us to specify a mount ns to enter in order to find
the mount entries.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Link: https://lore.kernel.org/r/2d1a35bc9ab94b4656c056c420f25e429e7eb0b1.1719243756.git.josef@toxicpanda.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
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This test is unusual in that overriding TESTS does not change the tests to
be run. Split the individual tests into several functions and invoke them
through tests_run() as appropriate.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Nothing calls these.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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These functions are not used anymore.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The selftest does not use functions from mirror_gre_lib, ditch the import.
It does not use arping either, so drop the require_command as well.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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After the previous patch, the function test_span_failable() is always
called with should_fail=1. Drop the argument and streamline the code.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The mirroring tests are currently run in a skip_hw and optionally a skip_sw
mode. The former tests the SW datapath, the latter the HW datapath, if
available. In order to be able to test SW datapath on HW loopbacks, traps
are installed on ingress to get traffic from the HW datapath to the SW one.
This adds an unnecessary complexity when it would be much simpler to just
use a veth-based topology to test the SW datapath. Thus drop all the code
that supports this dual testing.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The mirroring selftests work by sending ICMP traffic between two hosts.
Along the way, this traffic is mirrored to a gretap netdevice, and counter
taps are then installed strategically along the path of the mirrored
traffic to verify the mirroring took place.
The problem with this is that besides mirroring the primary traffic, any
other service traffic is mirrored as well. At the same time, because the
tests need to work in HW-offloaded scenarios, the ability of the device to
do arbitrary packet inspection should not be taken for granted. Most tests
therefore simply use matchall, one uses flower to match on IP address.
As a result, the selftests are noisy, because besides the primary ICMP
traffic, any amount of other service traffic is mirrored as well.
mirror_test() accommodated this noisiness by giving the counters an
allowance of several packets. But in the previous patch, where possible,
counter taps were changed to match only on an exact ICMP message. At least
in those cases, we can demand an exact number of packets to match.
Where the tap is installed on a connective netdevice, the exact matching is
not practical (though with u32, anything is possible). In those places,
there should still be some leeway -- and probably bigger than before,
because experience shows that these tests are very noisy.
To that end, change mirror_test() so that it can be either called with an
exact number to expect, or with an expression. Where leeway is needed,
adjust callers to pass a ">= 10" instead of mere 10.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The mirroring selftests work by sending ICMP traffic between two hosts.
Along the way, this traffic is mirrored to a gretap netdevice, and counter
taps are then installed strategically along the path of the mirrored
traffic to verify the mirroring took place.
The problem with this is that besides mirroring the primary traffic, any
other service traffic is mirrored as well. At the same time, because the
tests need to work in HW-offloaded scenarios, the ability of the device to
do arbitrary packet inspection should not be taken for granted. Most tests
therefore simply use matchall, one uses flower to match on IP address.
As a result, the selftests are noisy, because besides the primary ICMP
traffic, any amount of other service traffic is mirrored as well.
However, often the counter tap is installed at the remote end of the gretap
tunnel. Since this is a SW-datapath scenario anyway, we can make the filter
arbitrarily accurate.
Thus in this patch, add parameters forward_type and backward_type to
several mirroring test helpers, as some other helpers already have. Then
change do_test_span_dir_ips() to instead of installing one generic tap and
using it for test in both directions, install the tap for each direction
separately, matching on the ICMP type given by these parameters.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The test works by sending packets through a tunnel, whence they are
forwarded to a LAG. One of the LAG children is removed from the LAG prior
to the exercise, and the test then counts how many packets pass through the
other one. The issue with this is that it counts all packets, not just the
encapsulated ones.
So instead add a second gretap endpoint to receive the sent packets, and
check reception counters there.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The argument $dir has a fallback value of "ingress". Move the fallback from
the usage site to the argument definition block to make the fact clearer.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The argument is not used by these functions except to propagate it for
ultimately no purpose.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In some functions, argument-forwarding through "$@" without listing the
individual arguments explicitly is fundamental to the operation of a
function. E.g. xfail_on_veth() should be able to run various tests in the
fail-to-xfail regime, and usage of "$@" is appropriate as an abstraction
mechanism. For functions such as simple_if_init(), $@ is a handy way to
pass an array.
In other functions, it's merely a mechanism to save some typing, which
however ends up obscuring the real arguments and makes life hard for those
that end up reading the code.
This patch adds some of the implicit function arguments and correspondingly
expands $@'s. In several cases this will come in handy as following patches
adjust the parameter lists.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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CMIS compliant modules such as QSFP-DD might be running a firmware that
can be updated in a vendor-neutral way by exchanging messages between
the host and the module as described in section 7.3.1 of revision 5.2 of
the CMIS standard.
Add a pair of new ethtool messages that allow:
* User space to trigger firmware update of transceiver modules
* The kernel to notify user space about the progress of the process
The user interface is designed to be asynchronous in order to avoid
RTNL being held for too long and to allow several modules to be
updated simultaneously. The interface is designed with CMIS compliant
modules in mind, but kept generic enough to accommodate future use
cases, if these arise.
Signed-off-by: Danielle Ratson <danieller@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It makes it harder to shoot yourself in the foot, by using
additional __must_be_array() check.
Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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counter_source
Reuse the enum. It means the same thing in both cases.
Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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fd_perf field used to be part of the union, but later moved out of it,
because we test it with fd_perf != -1 to determine if any perf counter
is opened, making the union unused.
Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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Fixes compilation errors for Makefile snapshot target described in:
commit 231ce08b662a ("tools/power turbostat: Add "snapshot:" Makefile target")
Signed-off-by: Patryk Wlazlyn <patryk.wlazlyn@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
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