Its much easier to write and read tests than it was when sockmap was originally created. At that time we created a test_sockmap prog that did sockmap tests. But, its showing its age now. For example it reads user vars out of maps, is hard to run targetted tests, has a different format from the familiar test_progs and so on. I recently thought there was an issue with pop helpers so I created some tests to try and track it down. It turns out it was a bug in the BPF program we had not the kernel. But, I think it makes sense to start deprecating test_sockmap and converting these to the nicer test_progs. So this is a first round of test_prog tests for sockmap cork and pop helpers. I'll add push and pull tests shortly. I think its fine, maybe preferred to review smaller patchsets, to send these incrementally as I get them created. Thanks! John Fastabend (4): bpf: Add modern test for sk_msg prog pop msg header bpf: sockmap, add a sendmsg test so we can check that path bpf: sockmap, add a cork to force buffering of the scatterlist bpf: sockmap test cork and pop combined .../bpf/prog_tests/sockmap_helpers.h | 18 + .../bpf/prog_tests/sockmap_msg_helpers.c | 351 ++++++++++++++++++ .../bpf/progs/test_sockmap_msg_helpers.c | 67 ++++ 3 files changed, 436 insertions(+) create mode 100644 tools/testing/selftests/bpf/prog_tests/sockmap_msg_helpers.c create mode 100644 tools/testing/selftests/bpf/progs/test_sockmap_msg_helpers.c -- 2.33.0
