Currently, test_progs outputs all stdout/stderr as it runs, and when it is done, prints a summary. It is non-trivial for tooling to parse that output and extract meaningful information from it. This change adds a new option, `--json-summary`/`-J` that let the caller specify a file where `test_progs{,-no_alu32}` can write a summary of the run in a json format that can later be parsed by tooling. Currently, it creates a summary section with successes/skipped/failures followed by a list of failed tests and subtests. A test contains the following fields: - name: the name of the test - number: the number of the test - message: the log message that was printed by the test. - failed: A boolean indicating whether the test failed or not. Currently we only output failed tests, but in the future, successful tests could be added. - subtests: A list of subtests associated with this test. A subtest contains the following fields: - name: same as above - number: sanme as above - message: the log message that was printed by the subtest. - failed: same as above but for the subtest An example run and json content below: ``` $ sudo ./test_progs -a $(grep -v '^#' ./DENYLIST.aarch64 | awk '{print $1","}' | tr -d '\n') -j -J /tmp/test_progs.json $ jq < /tmp/test_progs.json | head -n 30 { "success": 29, "success_subtest": 23, "skipped": 3, "failed": 28, "results": [ { "name": "bpf_cookie", "number": 10, "message": "test_bpf_cookie:PASS:skel_open 0 nsec\n", "failed": true, "subtests": [ { "name": "multi_kprobe_link_api", "number": 2, "message": "kprobe_multi_link_api_subtest:PASS:load_kallsyms 0 nsec\nlibbpf: extern 'bpf_testmod_fentry_test1' (strong): not resolved\nlibbpf: failed to load object 'kprobe_multi'\nlibbpf: failed to load BPF skeleton 'kprobe_multi': -3\nkprobe_multi_link_api_subtest:FAIL:fentry_raw_skel_load unexpected error: -3\n", "failed": true }, { "name": "multi_kprobe_attach_api", "number": 3, "message": "libbpf: extern 'bpf_testmod_fentry_test1' (strong): not resolved\nlibbpf: failed to load object 'kprobe_multi'\nlibbpf: failed to load BPF skeleton 'kprobe_multi': -3\nkprobe_multi_attach_api_subtest:FAIL:fentry_raw_skel_load unexpected error: -3\n", "failed": true }, { "name": "lsm", "number": 8, "message": "lsm_subtest:PASS:lsm.link_create 0 nsec\nlsm_subtest:FAIL:stack_mprotect unexpected stack_mprotect: actual 0 != expected -1\n", "failed": true } ``` The file can then be used to print a summary of the test run and list of failing tests/subtests: ``` $ jq -r < /tmp/test_progs.json '"Success: \(.success)/\(.success_subtest), Skipped: \(.skipped), Failed: \(.failed)"' Success: 29/23, Skipped: 3, Failed: 28 $ jq -r < /tmp/test_progs.json '.results | map([ if .failed then "#\(.number) \(.name)" else empty end, ( . as {name: $tname, number: $tnum} | .subtests | map( if .failed then "#\($tnum)/\(.number) \($tname)/\(.name)" else empty end ) ) ]) | flatten | .[]' | head -n 20 #10 bpf_cookie #10/2 bpf_cookie/multi_kprobe_link_api #10/3 bpf_cookie/multi_kprobe_attach_api #10/8 bpf_cookie/lsm #15 bpf_mod_race #15/1 bpf_mod_race/ksym (used_btfs UAF) #15/2 bpf_mod_race/kfunc (kfunc_btf_tab UAF) #36 cgroup_hierarchical_stats #61 deny_namespace #61/1 deny_namespace/unpriv_userns_create_no_bpf #73 fexit_stress #83 get_func_ip_test #99 kfunc_dynptr_param #99/1 kfunc_dynptr_param/dynptr_data_null #99/4 kfunc_dynptr_param/dynptr_data_null #100 kprobe_multi_bench_attach #100/1 kprobe_multi_bench_attach/kernel #100/2 kprobe_multi_bench_attach/modules #101 kprobe_multi_test #101/1 kprobe_multi_test/skel_api ``` Signed-off-by: Manu Bretelle <chantr4@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20230317163256.3809328-1-chantr4@gmail.com

SFP1 vlan not working on the r3 #99

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