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* conf: Allow address remapped to host to be configuredDavid Gibson2024-08-213-30/+103
| | | | | | | | | | | | | | | | | | | | | 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>
* passt: Relicense to GPL 2.0, or any later versionStefano Brivio2023-04-064-4/+4
| | | | | | | | | | | | | | | | | | | 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: Simplify data handling for transfer testsDavid Gibson2022-09-292-166/+114
| | | | | | | | | | | | | | | | | | | | | | | | | | 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: Remove unnecessary sleeps from shutdown testsDavid Gibson2022-09-291-1/+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/passt_in_ns: Consistent sleep commands before starting socat clientStefano Brivio2022-09-222-6/+41
| | | | | | | | | | | | | | | There are some 'sleep 1' commands between starting the socat server and its corresponding client to avoid races due to the server not being ready as we start sending data. However, those don't cover all the cases where we might need them, and in some cases the sleep command actually ended up being before the server even starts. This fixes occasional failures in TCP and UDP simple transfer tests, that became apparent with the new command dispatch mechanism. Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
* test: Simpler termination handling for UDP testsDavid Gibson2022-09-131-37/+36
| | | | | | | | | | | | | Because UDP is connectionless we don't have an in-built end-of-stream signal for our connectivity tests. We work around this by explicitly adding an end marker to our sample data and killing the listening end once it is seen. However, socat has some built-in options - null-eof and shut-null - which can be used to signal the end of stream with a zero-length UDP packet. Use these to simplify how the UDP tests are implemented. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* test: Move pidfiles and nsholder sockets into state directoryDavid Gibson2022-09-131-1/+1
| | | | | | | Currently they go in the passt source tree with a fixed names, which means their presence can mess with subsequent test runs. Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* test: Use paths in __STATEDIR__ instead of 'temp' and 'tempdir' directivesDavid Gibson2022-09-132-7/+7
| | | | | | | | | | | | Instead of using the 'temp' and 'tempdir' DSL directives to create temporary files, use fixed paths relative to __STATEDIR__. This has two advantages: 1) The files are automatically cleaned up if the tests fail (and even if that doesn't work they're easier to clean up manuall) 2) When debugging tests it's easier to figure out which of the temporary files are relevant to whatever's going wrong Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
* test: Group tests by mode then protocol, rather than the reverseDavid Gibson2022-09-134-0/+464
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>