add linuxquic implementation and enable it in ci

[lxin]

This patchset integrates linuxquic into the quic interop runner and enables it in CI.

• The 1st patch adds linuxquic testing image into the implementation.
• The 2nd patch enables linuxquic in interop CI tests

With this patchset, interop tests CI can now run successfully with additional images, as shown in https://github.com/lxin/quic-interop-runner/actions/runs/22547285220

Thanks to Moritz Buhl for initiating the interop tests for linuxquic.

Note

Add linuxquic implementation and enable it in CI interop tests

• Adds a linuxquic entry to implementations_quic.json pointing to quay.io/lxin/linuxquic-interop:latest.
• In implementations.py, linuxquic is filtered out of the returned implementations unless /usr/include/linux/quic.h is present on the host.
• Adds a CI step in interop-test.yml that clones and builds the Linux QUIC kernel module when the client or server is linuxquic, ensuring the header file exists before tests run.

^{Macroscope summarized b4d500b.}

[larseggert]

@lxin I tried to add linuxquic to the neqo CI (mozilla/neqo#2507) but all tests are failing. What am I doing wrong?

[miyangmia]

@larseggert Oh, I just checked your commit. As linuxquic implement QUIC in kernel, you need to install the QUIC kernel module on the host, as it does in the patch "ci: enable linuxquic in interop tests ".

[lxin]

@larseggert FYI, The result of the interop test I ran with this patchset on Mar 9th:

[alaendle]

@marten-seemann I just wanted to ask if it makes sense to consider adding a new Quic implementation right now, because I've seen that this and other pull requests have been sitting for a while. And please don't misunderstand me, I simply want to avoid potentially creating work for no chance of integration. This shouldn't be interpreted as criticism or an expectation; I'm already happy with this framework and can use it for testing as is. So, thank you very much for providing this.

[marten-seemann]

@lxin With #466, you should now be able to add your implementation to the JSON file without any need for modifyinhg the workflows.

[lxin]

@marten-seemann Thanks for the work!

I’ve updated the MR accordingly. Since Linux QUIC runs as a kernel module, the tests require the module to be installed on the host. I’ve therefore added a step to interop-test.yml to install it when needed.

Hope that works for you. Thanks again!