selftests/bpf: Verify that the cgroup_skb filters receive expected packets.

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This test case includes four scenarios:

1. Connect to the server from outside the cgroup and close the connection
   from outside the cgroup.
2. Connect to the server from outside the cgroup and close the connection
   from inside the cgroup.
3. Connect to the server from inside the cgroup and close the connection
   from outside the cgroup.
4. Connect to the server from inside the cgroup and close the connection
   from inside the cgroup.

The test case is to verify that cgroup_skb/{egress, ingress} filters
receive expected packets including SYN, SYN/ACK, ACK, FIN, and FIN/ACK.

Signed-off-by: Kui-Feng Lee <kuifeng@meta.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20230624014600.576756-3-kuifeng@meta.com

...

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Kui-Feng Lee 2023-06-23 18:46:00 -07:00 • committed by Daniel Borkmann

parent 223f5f79f2

commit 539c7e67aa

5 changed files with 832 additions and 0 deletions

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12

tools/testing/selftests/bpf/cgroup_helpers.c

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1

tools/testing/selftests/bpf/cgroup_helpers.h

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35

tools/testing/selftests/bpf/cgroup_tcp_skb.h

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402

tools/testing/selftests/bpf/prog_tests/cgroup_tcp_skb.c

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382

tools/testing/selftests/bpf/progs/cgroup_tcp_skb.c

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