Re: [PATCH v4 bpf 2/2] bpf: selftests: add lwt redirect regression test cases

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On Fri, Jul 28, 2023 at 03:47 PM -07, Martin KaFai Lau wrote:
> On 7/25/23 6:09 PM, Yan Zhai wrote:

[...]

>> diff --git a/tools/testing/selftests/bpf/test_lwt_redirect.sh
>> b/tools/testing/selftests/bpf/test_lwt_redirect.sh
>> new file mode 100755
>> index 000000000000..1b7b78b48174
>> --- /dev/null
>> +++ b/tools/testing/selftests/bpf/test_lwt_redirect.sh
>
> This has to be written in the test_progs infrastructure in C. Only test_progs is
> run by the BPF CI. Take a look at other tests in prog_tests/. For example,
> tc_redirect.c and xdp_metadata.c which are having setup in netns/link/...etc. It
> currently has helpers to add tc qdisc and filter but not adding route yet which
> could be a useful addition.

Can we help make the BPF CI better so that it also runs other tests in
addition test_progs?

We have bpf selftests written in shell and even Python. These are
sometimes the right tools for the job and make adding tests easier,
IMHO. Network setup from C is verbose and tedious. Not to mention, hard
to read through.

# ./run_kselftest.sh --list
bpf:test_verifier
bpf:test_tag
bpf:test_maps
bpf:test_lru_map
bpf:test_lpm_map
bpf:test_progs
bpf:test_dev_cgroup
bpf:test_sock
bpf:test_sockmap
bpf:get_cgroup_id_user
bpf:test_cgroup_storage
bpf:test_tcpnotify_user
bpf:test_sysctl
bpf:test_progs-no_alu32
bpf:test_kmod.sh
bpf:test_xdp_redirect.sh
bpf:test_xdp_redirect_multi.sh
bpf:test_xdp_meta.sh
bpf:test_xdp_veth.sh
bpf:test_offload.py
bpf:test_sock_addr.sh
bpf:test_tunnel.sh
bpf:test_lwt_seg6local.sh
bpf:test_lirc_mode2.sh
bpf:test_skb_cgroup_id.sh
bpf:test_flow_dissector.sh
bpf:test_xdp_vlan_mode_generic.sh
bpf:test_xdp_vlan_mode_native.sh
bpf:test_lwt_ip_encap.sh
bpf:test_tcp_check_syncookie.sh
bpf:test_tc_tunnel.sh
bpf:test_tc_edt.sh
bpf:test_xdping.sh
bpf:test_bpftool_build.sh
bpf:test_bpftool.sh
bpf:test_bpftool_metadata.sh
bpf:test_doc_build.sh
bpf:test_xsk.sh
bpf:test_xdp_features.sh




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