samples, bpf: Add automated test for cgroup filter attachments
This patch adds the sample program test_cgrp2_attach2. This program is similar to test_cgrp2_attach, but it performs automated testing of the cgroupv2 BPF attached filters. It runs the following checks: * Simple filter attachment * Application of filters to child cgroups * Overriding filters on child cgroups * Checking that this still works when the parent filter is removed The filters that are used here are simply allow all / deny all filters, so it isn't checking the actual functionality of the filters, but rather the behaviour around detachment / attachment. If net_cls is enabled, this test will fail. Signed-off-by:Sargun Dhillon <sargun@sargun.me> Acked-by:
Alexei Starovoitov <ast@kernel.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
parent
1a922fee
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