bpf: complexity-tests: split kernel capabilities into separate file

[julianwiedmann]

Part of the BPF complexity test configuration is to spell out the capabilities of the tested kernel. For example

cilium/bpf/complexity-tests/netnext/bpf_host/1.txt

Lines 1 to 2 in 6092fca

	-DHAVE_FIB_IFINDEX=1
	-DHAVE_FIB_NEIGH=1

But for a given kernel version, these capabilities are identical across all tested configurations and all programs. Thus it would be much less maintenance effort to have a single capabilities.txt file in each kernel directory.

And then have https://github.com/cilium/cilium/blob/main/test/verifier/verifier_test.go mix the file content into the test configuration.

[avi028]

Hi @julianwiedmann I would like to solve this issue. Can you assign this to me

[julianwiedmann]

Hi @julianwiedmann I would like to solve this issue. Can you assign this to me

Absolutely, thank you! Please don't hesitate to ask for help (here or on Slack) when you've had time to dig in.

Note that you can test your changes locally doing something like

go test -exec sudo -v -run TestVerifier/bpf_host/1 ./test/verifier/ -cilium-base-path $(pwd) -ci-kernel-version netnext