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This is quite useful at least for myself as I'm usually running tests
using a guest kernel that's not the same as the one on the host.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
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Because the host and guest share the same IP address with passt/pasta, it's
not possible for the guest to directly address the host. Therefore we
allow packets from the guest going to a special "NAT to host" address to be
redirected to the host, appearing there as though they have both source and
destination address of loopback.
Currently that special address is always the address of the default
gateway (or none). That can be a problem if we want that gateway to be
addressable by the guest. Therefore, allow the special "NAT to host"
address to be overridden on the command line with a new --map-host-loopback
option.
In order to exercise and test it, update the passt_in_ns and perf
tests to use this option and give different mapping addresses for the
two layers of the environment.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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Ugly as hell, but we keep breaking things otherwise, and I keep
forgetting to run this manually (as long as it's based on my local
Podman setup, that's the only alternative).
We need to clone the Podman repository as distribution packages don't
contain test scripts, typically. While at it, build the latest
version which is what really matters.
As we're planning anyway to revamp the test framework, I'd be
inclined to just add this without too many thoughts, and have it as
a nice-to-have requirement reminder for the new framework.
Link: https://github.com/containers/podman/pull/19699
Suggested-by: Paul Holzinger <pholzing@redhat.com>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
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Using this, rather than using "nstool info" to get the pid then manually
connecting with nsenter makes things a little simpler.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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Unlike ${DEBUG} we don't initialize ${TRACE} to 0 if not set, which cases
failures when testing it later. That failure acts as though it is false,
however it emits spurious errors in script.log, which can make it harder to
spot real errors.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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In practical terms, passt doesn't benefit from the additional
protection offered by the AGPL over the GPL, because it's not
suitable to be executed over a computer network.
Further, restricting the distribution under the version 3 of the GPL
wouldn't provide any practical advantage either, as long as the passt
codebase is concerned, and might cause unnecessary compatibility
dilemmas.
Change licensing terms to the GNU General Public License Version 2,
or any later version, with written permission from all current and
past contributors, namely: myself, David Gibson, Laine Stump, Andrea
Bolognani, Paul Holzinger, Richard W.M. Jones, Chris Kuhn, Florian
Weimer, Giuseppe Scrivano, Stefan Hajnoczi, and Vasiliy Ulyanov.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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These show a summary of memory usage in kernel and userspace with
different port forwarding configurations, details of userspace usage
using 'nm' (passt only uses statically allocated memory), and details
of kernel memory from slab reporting facilities.
This adds a new test image, mbuto.mem.img, with harcoded IPv4 and
IPv6 addresses and routes, and just the tools we need to start and
stop passt, to report from /proc/slabinfo, /proc/meminfo, and to
print and parse symbol sizes using nm(1).
passt can't pivot_root() for sandboxing purposes on ramfs, so we need
to create another filesystem and chroot into it, first.
We don't want to use pane context functions, as we're checking memory
usage for sockets: resort to screen-scraping.
Configure a dummy interface to provide passt with an appearance of
working IPv4 and IPv6 connectivity, contributed by David.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
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I'm going to add yet another one of those, for which I have no quick
solution. It's a regression in some sense, but at least if we make
this regression more observable and defined, it should be easier to
find a comprehensive solution later, within this or another testing
framework.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
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They're too slow to cope with current release cycles, and they
haven't found bugs in months, also because clang-tidy and cppcheck
would find most of them earlier.
Disable them for the moment. We should pre-install gcc and make in
non-x86 images, as those run on my test machine with qemu TCG, and
that's the real slow-down here. Then we can re-enable them.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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To test log files on a tmpfs mount, we need to unshare the mount
namespace, which means using a context for the passt pane is not
really practical at the moment, as we can't open a shell there, so
we would have to encapsulate all the commands under 'unshare -rUm',
plus the "inner" pasta command, running in turn a tcp_rr server.
It might be worth fixing this by e.g. detecting we are trying to
spawn an interactive shell and adding a special path in the context
setup with some form of stdin redirection -- I'm not sure it's doable
though.
For this reason, add a new layout, using a context only for the host
pane, while keeping the old command dispatch mechanism for the passt
pane.
We also need a new setup function that doesn't start pasta: we want
to start and restart it with different options.
Further, we need a 'pint' directive, to send an interrupt to the
passt pane: add that in lib/test.
All the tests before the one involving tmpfs and a detached mount
namespace were also tested with the context mechanism. To make an
eventual conversion easier, pass tcp_crr directly as a command on
pasta's command line where feasible.
While at it, fix the comment to the teardown_pasta() function.
The new test set can be semi-conveniently run as:
./run pasta_options/log_to_file
and it checks basic log creation, size of the log file after flooding
it with debug entries, rotations, and basic consistency after
rotations, on both an existing filesystem and a tmpfs, chosen as
it doesn't support collapsing data ranges via fallocate(), hence
triggering the fall-back mechanism for logging rotation.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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The distro and performance tests are by far the slowest part of the passt
testsuite. Move them to the end of the testsuite run, so that it's easier
to do a quick test during development by letting the other tests run then
interrupting the test runner.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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To keep this simple, only support tests that have corresponding setup
and teardown functions implied by their path. For example:
./run passt/ndp
will trigger the 'passt' setup and teardown functions.
This is not really elegant, but it looks robust, and while David is
considering proper alternatives, it should be quite useful.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
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We use this fifo to send messages to the information pane. Put it in the
state directory so it doesn't need its own cleanup.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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The test scripts create a bunch of temporary files to keep track of
internal state. Some are made in /tmp with individual mktemp calls, some
go in the passt source directory, and some go in $LOGDIR. This can
sometimes make it messy to clean up after failed test runs.
Start cleaning this up by creating a single "state" directory ($STATEBASE)
in /tmp for all the state or temporary files used by a single test run.
Clean it up automatically in cleanup() - except when DEBUG==1, because
those files can be useful for debugging test script failures.
We create subdirectories under $STATEBASE for each setup function, exposed
as $STATESETUP. We also create subdirectories for each test script and
expose those to the scripts as __STATEDIR__.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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We install a cleanup() function with 'trap' in order to clean up temporary
files we generate during the tests. However, we deinstall it after
run_term, which means it won't run in most of the cases where it would be
useful. Even if "run from_term" exits with an error, that error will be
hidden from the run_term wrapper because it's within a tmux session, so we
will return from run_term normally, uninstall the trap and never clean up.
In fact there's no reason to uninstall the trap at all, it works just as
well on the success exit path as an error exit path.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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For example, passt/dhcp rather than dhcp/passt. This is more
consistent with the two_guests and other test groups, and makes some
other cleanups simpler.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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We're creating a system for tests to more reliably execute commands in
various contexts (e.g. host, guest, namespace). That transition is going
to happen over a number of steps though, so in the meantime we need to deal
with both the old-style issuing of commands via typing into and screen
scraping tmux panels, and the new-style system for executing commands in
context.
Introduce some transitional helpers which will issue a command via context
if the requested context is initialized, but will otherwise fall back to
the old style tmux panel based method. Re-implement the various test DSL
commands in terms of these new helpers.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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The test scripts run with sh -e, which means they will stop if any commands
return an error. That's generally desirable, because we won't continue
after things are hopeless due to an earlier step failing.
Unfortunately, the tmux setup we run the script in means it's not obvious
where any error messages related to such a failure will go. Depending on
exactly where the error occurs they might go to the original terminal
hidden behind tmux, or they might go to a tmux panel that's not visible in
the normal layouts.
To make it easier to find such error message, redirect direct output and
errors from the test script itself to a 'script.log' file in the logs
directory. When in DEBUG=1 mode, additionaly 'set -x' so we log all the
commands we execute to that file.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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For the passt and passt_in_ns tests we have a "shutdown" testcase that
checks for any errors from the passt process we were using (including
valgrind warnings). Do the same for pasta tests, so that we catch any
error codes from the pasta process.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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The "valgrind" test cases are designed to pick up errors reported when
passt is running under valgrind. But what it actually does is just kill
the passt process, then see if it had a non-zero exit code. That means it
will equally well pick up any other problems which caused passt to exit
with an error status: either something detected within passt or as a result
of passt being killed by an unexpected signal.
The fact that the "valgrind" test is actually responsible for shutting down
the passt process is non-obvious and can lead to problems when selectively
running tests during debugging.
Rename the "valgrind" tests to "shutdown" tests and run it regardless of
whether we're using valgrind or not. This allows us to remove an ugly
speacial case in the passt_in_ns teardown code.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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Currently the build tests and distro tests share a common setup function.
That works for now, but changes we want to make will mean they need
slightly different setup, so split the setup functions in preparation.
Currently, neither build nor distro tests have any teardown function.
Again, future changes are going to mean we need to do some teardown, so
create some empty for now teardown functions in preparation.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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Both clang-tidy and cppcheck linting are handled by the same test file,
test/build/static_checkers. The two linters are independent of each other
though, and each one takes quite a long time. Split them into separate
files to make it easier to control which are executed from the top level
test script.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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Currently test/run uses wildcards to run all of the tests in a directory.
However, that wildcard list is filtered down by the "onlyfor" directives
in the test files... usually to a single file.
Therefore, just explicitly list the files we *really* want to run for this
test mode. This makes it easier to see at the top level what tests will
be executed, and to change that list temporarily while debugging specific
failures.
This means the "onlyfor" directive no longer has any purpose, and we can
remove it. "onlyfor" was also the only used of the $MODE variable, so we
can remove that too.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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The top level listing control of which tests to run is in test/run, however
it uses the test() function which runs an entire directory of test files,
filtered by some criteria. This makes it awkward to narrow down to a
subset of tests when debugging a specific failure.
To make this easier, have test() take an explicit list of test files to
run, and have the caller in test/run handle the directory traversal. The
construct we use for this is pretty awkward to handle the fact that we're
in the source tree root directory rather than test/ at this point in
test/run. Later cleanups will improve that.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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There's no need to return non-zero if there have been failures in
run(), because the exit value is already determined from the number
of failures reported in the log file.
Return zero, so that this doesn't cause the script to fail, given we
now run it with -e.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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Most commands issued during the testing scripts aren't explicitly checked
for errors. Therefore, if they fail, the shell will just keep on
executing. This makes it difficult to figure out where things started
going wrong if things fall over.
Run the whole script with the set -e mode so that it will exit in the case
of any (unchecked) failing command. To make this work we do need to add
explicit checks / fallbacks for some commands which we expect to fail.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
[sbrivio: use sh -e instead of setting -e later, so that we don't miss
anything before set -e is issued]
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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The XVFB variable is initialized at the beginning of test/run then never
used again. I'm assuming it's a leftover from some ealier iteration.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
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Pass to seccomp.sh a list of additional syscalls valgrind needs as
EXTRA_SYSCALLS in a new 'valgrind' make target, and add corresponding
support in seccomp.sh itself.
In test setup functions, start passt with valgrind, but not for
performance tests.
Add tests checking that valgrind exits without errors after all the
other tests in the group are done.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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For demos, cool-retro-term(1) looked fancier, but several threads of
that and ffmpeg(1) are just messing up with performance testing.
The CI videos started getting really big as well, and they were
difficult to read.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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...showing setup steps, some peculiarities as --net option, and a
general side-to-side comparison with slirp4netns(1), including
"quick" TCP and UDP throughput and latency benchmarks.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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The new tests check build and a simple case with pasta sending a
short message in both directions (namespace to init, init to
namespace).
Tests cover a mix of Debian, Fedora, OpenSUSE and Ubuntu combinations
on aarch64, i386, ppc64, ppc64le, s390x, x86_64.
Builds tested starting from approximately glibc 2.19, gcc 4.7, and
actual functionality approximately from 4.4 kernels, glibc 2.25,
gcc 4.8, all the way up to current glibc/gcc/kernel versions.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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Not really quick, definitely dirty.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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