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* test/nstool: Provide useful error if given a path that's too longDavid Gibson2023-05-231-8/+14
| | | | | | | | | | | | | Normal filesystem paths can be very long (PATH_MAX is around 8k), however Unix domain sockets can only use relatively short paths (UNIX_PATH_MAX is 108 on Linux). Currently nstool will simply truncate paths that are too long, leading to difficult to understand failures. Make such failures clearer, with an explicit error message if given a path that's too long. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* nstool: Enter holder's cwd when changing mount ns with nstool execDavid Gibson2023-04-081-1/+11
| | | | | | | | | | If we enter a mount namespace with nstool exec our working directory will be changed to / in the new mount ns. This is surprising if we haven't actually altered any mounts yet in the new ns. Instead, change the working directory to match that of the holder process in this situation. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* nstool: Advertise the holder's cwd (in its mountns) across the socketDavid Gibson2023-04-081-0/+4
| | | | | | | | This is possible useful in nstool info and has further uses for nstool exec. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test: Use "nstool exec" to slightly simplify testsDavid Gibson2023-04-083-26/+23
| | | | | | | | 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>
* test: Initialise ${TRACE} properlyDavid Gibson2023-04-081-0/+3
| | | | | | | | | | 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>
* nstool: Add --keep-caps option to nstool execDavid Gibson2023-04-081-9/+78
| | | | | | | | This allows you to run commands within a user namespace with the privilege that comes from owning that userns. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* nstool: Add nstool exec command to execute commands in an nstool namespaceDavid Gibson2023-04-081-2/+137
| | | | | | | | | This combines nstool info -pw <sock> with nsenter with various options for a more convenient and less verbose of entering existing nstool managed namespaces. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* nstool: Helpers to iterate through namespace typesDavid Gibson2023-04-081-10/+12
| | | | | | | Will make things a bit less verbose in future. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* nstool: Add magic number to advertized informationDavid Gibson2023-04-081-0/+9
| | | | | | | | So that we'll probably give a better error if you point it at something that's not an nstool hold control socket. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* nstool: Detect what namespaces target is inDavid Gibson2023-04-081-14/+143
| | | | | | | | | | Give nstool the ability to detect what namespaces the target process is in, relative to where it's called. That is, those namespace types for which the target is not in the same namespace as the caller. For now, just print this information with "info", which can be useful for debugging. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* nstool: Replace "pid" subcommand with "info" subcommandDavid Gibson2023-04-082-17/+55
| | | | | | | | | The new subcommand gives more information about the holder process and its namespace, and may be further extended in future. Add some options which give the old behaviour for existing scripts. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* nstool: Split some command line parsing and socket setup to subcommandsDavid Gibson2023-04-081-34/+68
| | | | | | | | This will make it easier to differentiate the options to those commands further in future. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* nstool: Move description of its operation modes from comment to usageDavid Gibson2023-04-081-15/+11
| | | | | | | Easier to see it there. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* nstool: Reverse parameters to nstoolDavid Gibson2023-04-082-28/+28
| | | | | | | | Having the "subcommand" first is more conventional and will make it more natural for future extensions I have planned. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* nstool: Rename nsholder to nstoolDavid Gibson2023-04-084-29/+29
| | | | | | | In preparation for extending what it does. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test: Remove race between commands run in the same contextDavid Gibson2023-04-081-2/+2
| | | | | | | | | | | | | context_run() has a race condition if two commands are run in close proximity (generally involving at least one in the background). Because we always use the same name for the temporary fifo files, if another command is issued while the fifos for the first still exist, mkfifo will fail, typically causing the entire test script to jam. Create unique names for the temporary fifos to avoid this problem. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* passt: Relicense to GPL 2.0, or any later versionStefano Brivio2023-04-0647-47/+47
| | | | | | | | | | | | | | | | | | | 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>
* test: Fedora 32-35 have moved to the archivesDavid Gibson2023-02-141-4/+4
| | | | | | | | Fedora 32-35 are now old enough that they're not on all mirrors. Fetch them from the archive server instead. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test: Update location for Debian ppc64 imagesDavid Gibson2023-02-142-2/+5
| | | | | | | | The current debian cloud images no longer include ppc64. Change to using the latest snapshot which does include ppc64. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test/pasta_options: Ignore failures on shell 'exit'Stefano Brivio2023-02-131-3/+6
| | | | | | | | | | | | | | | | | | | | On shell 'exit' commands, running shells from pasta, we might get: Cannot set tty process group (No such process) as some TTY devices might be unaccessible. This is harmless, but after commit "pasta: propagate exit code from child command", we'll get test failures there, at least with dash. Ignore those explicitly with a ugly workaround: we can't simply do something like: exit || : because the failure is reported by the shell itself once it exits, regardless of the command evaluation. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test/perf/pasta_tcp: Add host to namespace cases for traffic via tapStefano Brivio2023-01-051-0/+57
| | | | | | | | | | Similarly to UDP cases, these were missing as it wasn't clear, when the other tests were introduced, if using the global address of a namespace, from the host, should have resulted in connections being routed via the tap interface. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
* test/perf/pasta_udp: Add host to namespace cases for traffic via tapStefano Brivio2023-01-051-0/+37
| | | | | | | | | | | | | | These were missing as it wasn't clear, when the other tests were introduced, if using the global address of a namespace, from the host, should have resulted in traffic being routed via the tap interface (as opposed to the loopback interface). We now clarified that's actually the case. Use same values and thresholds as the tests for loopback traffic, as throughput figures currently indicate there isn't much difference. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
* test/lib/test: Clean up iperf3 JSON files before starting the serverStefano Brivio2022-11-161-2/+2
| | | | | | | | ...instead of doing it after the test. Now that we have pre-built guest images, we might also have old JSON files from previous, interrupted test runs. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test/memory/passt: Change passt.avx2 path to /bin in test itself2022_11_04.e308018Stefano Brivio2022-11-041-2/+2
| | | | | | | | Now that we install the binary in /bin, and we have a link from /usr/bin, change the path in the test itself as well. Otherwise it works with bash but not with dash for some reason. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test/perf: Finally drop workaround for virtio_net TX stallStefano Brivio2022-11-042-30/+0
| | | | | | | | | | | | Now that we require 13c6be96618c ("net: stream: add unix socket") in qemu to run the tests, we can also assume that commit df8d07081718 ("virtio-net: fix bottom-half packet TX on asynchronous completion") is present, as it was merged before that one. This fixes the issue we attempted to work around in passt TCP and UDP performance tests: finally drop that stuff. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test: Switch to qemu -netdev stream option instead of using qrapStefano Brivio2022-11-047-77/+75
| | | | | | | | | | | qemu commit 13c6be96618c ("net: stream: add unix socket") introduces support for native AF_UNIX support, finally making qrap useless. We can't quite drop that yet until a qemu release includes it, and then we'll need to wait a while for users to switch anyway, but at least for tests, we can use that support. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test: Wait for network before starting passt in two_guests setupStefano Brivio2022-11-041-0/+2
| | | | | | | | | | | | | As pasta now configures that target network namespace with --config-net, we need to wait for addresses and routes to be actually present. Just sending netlink messages doesn't mean this is done synchronously. A more elegant alternative, which probably makes sense regardless of this test setup, would be to query, from pasta, addresses and routes we added, and wait until they're there, before proceeding. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test: Add memory/passt test casesStefano Brivio2022-11-046-1/+289
| | | | | | | | | | | | | | | | | | | | | | | | 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>
* test/lib: Add "td" directive, handled by table_value()Stefano Brivio2022-11-042-0/+31
| | | | | | | This can be used for generic cell values with an arbitrary scale. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
* test/lib/perf_report: Use own flag to track initialisationStefano Brivio2022-11-041-3/+6
| | | | | | | | | Instead of just disabling performance reports if running in demo mode. This allows us to use table functions outside of performance reports. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
* test/lib: Move screen-scraping setup and layout functions to _ugly filesStefano Brivio2022-11-045-92/+123
| | | | | | | | | | | 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>
* test/run: Temporarily disable distribution tests2022_10_26.e4df8b0Stefano Brivio2022-10-261-0/+4
| | | | | | | | | | | | 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>
* test: Add log file tests for pasta plus corresponding layout and setupStefano Brivio2022-10-265-1/+150
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* test: Move slower tests to end of test runDavid Gibson2022-10-151-10/+10
| | | | | | | | | | 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>
* test: Add rudimentary support to run selected tests onlyStefano Brivio2022-10-143-2/+53
| | | | | | | | | | | | | | | 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>
* Stricter checking for nsholder.cDavid Gibson2022-09-292-2/+2
| | | | | | | | | | | | Add the -Wextra -pedantic and -std=c99 flags when compiling the nsholder test helper to get extra compiler checks, like we already use for the main source code. While we're there, fix some %d (signed) printf descriptors being used for unsigned values (uid_t and gid_t). Pointed out by cppcheck. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test: Remove unneccessary pane naming from layout_two_guestsDavid Gibson2022-09-291-4/+0
| | | | | | | | | This loop goes through and gives a numeric label to each pane, even though we name the panes properly shortly thereafter. Looks like a leftover from some earlier version. Remove it. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test: Simplify data handling for transfer testsDavid Gibson2022-09-2910-294/+214
| | | | | | | | | | | | | | | | | | | | | | | | | | Many of our tests are based around performing transfers of sample data across passt/pasta created links. The data flow here can be a bit hard to follow since, e.g. we create a file transfer it to the guest, then transfer it back to the host across several different tests. This also means that the test cases aren't independent of each other. Because we don't have the original file available at both ends in some cases, we compare them by generating md5sums at each end and comparing them, which is a bit complicated. Make a number of changes to simplify this: 1. Pre-generate the sample data files as a test asset, rather than building them on the fly during the tests proper 2. Include the sample data files in the mbuto guest image 3. Because we have good copies of the original data available in all contexts, we can now simply use 'cmp' to check if the transfer has worked, avoiding md5sum complications. 4. Similarly we can always use the original copy of the sample data on the send side of each transfer, meaning that the tests become more independent of each other. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test: Use --config-net for namespace setupDavid Gibson2022-09-291-14/+3
| | | | | | | | | | | | | | The setup functions for passt_in_ns and two_guests perform some fairly slow dhclient calls to configure the network in the namespace before starting the guest. This isn't really part of the tests, just necessary for the operations later. We can simplify and speed this up a bit by using pasta's '--config-net' option to configure the networking for us. As a bonus this means we have at least a minimal test of the --config-net option itself. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test: More robust wait for pasta/passt to be readyDavid Gibson2022-09-291-5/+10
| | | | | | | | | | | | | When we start passt or pasta, it may take a short time to be ready to handle packets, especially if running under valgrind. We have a number of semi-arbitrary fixed sleeps to account for this. We can do this more robustly by exploiting the fact that pasta/passt doesn't write its pidfile until it's ready to go, so if we wait for the pidfile to be created, we can proceed with confidence. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test: Remove unnecessary sleeps from shutdown testsDavid Gibson2022-09-292-2/+0
| | | | | | | | These are hangovers from older ways of shutting down the pasta/passt processes and no longer serve any purpose. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test: Add wait_for() shell helperDavid Gibson2022-09-292-3/+9
| | | | | | | | | | Add a shell helper function to wait for some command to succeed - typically a test for something to be done by a background process. Use it in the context code which waits for the guest to respond to ssh-over-vsock connections. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test/lib: Don't try to write to perf.js when running demosStefano Brivio2022-09-241-0/+6
| | | | | | | ...it doesn't actually exist, and this error now causes the demo to stop. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test/lib: Drop perf_report_append() from perf_reportStefano Brivio2022-09-241-6/+1
| | | | | | | It's not used anymore. While at it, fix the function name in the comment to perf_report_append_js(). Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test/demo: Avoid using port 5201 on the hostStefano Brivio2022-09-243-115/+115
| | | | | | | | | That's the default port for iperf3, which also means that it's quite likely in use on my test machine. Use different port numbers: recycle the scheme we use in tests for passt and pasta's demo, use 5221-5224 (a bit shorter) for the slirp4netns container in Podman's demo. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test/demo: Use relative paths to change directories when possibleStefano Brivio2022-09-242-6/+5
| | | | | | | | A cd to __STATEDIR__ results in a rather long command, that's not very readable. Jump between directories using .. and relative paths, once we're there. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test/passt.mbuto: Don't fail on missing guest public keyStefano Brivio2022-09-231-1/+1
| | | | | | | | | | | We won't necessarily run mbuto as part of regular tests: it can also be used for demos or out-of-tree tests. To keep the profile simple, leave the whole sshd setup there, which is otherwise harmless, but don't fail if guest-key.pub is missing in the current directory. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test/distro: Update workarounds for Ubuntu 22.04 on s390x2022_09_23.d6f865aStefano Brivio2022-09-231-1/+3
| | | | | | | | | | | | | | If we use dhclient without creating a complete network configuration, systemd-resolved will stop working after a while, and this sometimes happens while we're still installing packages. Disable it, together with systemd-networkd, while taking care of removing the dhclient hook that prevents overriding /etc/resolv.conf. While at it, it looks like removing snapd and needrestart actually takes more time than keeping them: drop that line. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test/lib: Wait for DHCPv4 before starting DHCPv6 client in two_guests testStefano Brivio2022-09-231-0/+1
| | | | | | | | | | I'm not sure why, but dhclient hangs otherwise. This reflects what we do in the passt_in_ns setup steps. Eventually, this whole block could go away if we let pasta configure this network namespace with --config-net. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test/perf: Wait for neper servers in guest to be ready before starting clientStefano Brivio2022-09-232-0/+6
| | | | | | | | Starting tcp_rr, tcp_crr, udp_rr servers in the guest takes a bit longer than starting the corresponding clients on the host, and we end up starting clients before servers unless we add a delay there. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
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