kernel/tools/testing/selftests/bpf/test_tcpbpf.h, branch linux-6.2.y

selftests/bpf: Add Userspace tests for TCP_WINDOW_CLAMP

2020-12-04T01:23:24Z

Adding selftests for new added functionality to set TCP_WINDOW_CLAMP from bpf setsockopt. Signed-off-by: Prankur gupta Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20201202213152.435886-3-prankgup@fb.com

selftest/bpf: Use global variables instead of maps for test_tcpbpf_kern

2020-11-04T01:52:37Z

Use global variables instead of global_map and sockopt_results_map to track test data. Doing this greatly simplifies the code as there is not need to take the extra steps of updating the maps or looking up elements. Signed-off-by: Alexander Duyck Signed-off-by: Alexei Starovoitov Acked-by: Martin KaFai Lau Link: https://lore.kernel.org/bpf/160443931900.1086697.6588858453575682351.stgit@localhost.localdomain

selftests/bpf: De-flake test_tcpbpf

2019-12-05T02:01:05Z

It looks like BPF program that handles BPF_SOCK_OPS_STATE_CB state can race with the bpf_map_lookup_elem("global_map"); I sometimes see the failures in this test and re-running helps. Since we know that we expect the callback to be called 3 times (one time for listener socket, two times for both ends of the connection), let's export this number and add simple retry logic around that. Also, let's make EXPECT_EQ() not return on failure, but continue evaluating all conditions; that should make potential debugging easier. With this fix in place I don't observe the flakiness anymore. Signed-off-by: Stanislav Fomichev Signed-off-by: Alexei Starovoitov Cc: Lawrence Brakmo Link: https://lore.kernel.org/bpf/20191204190955.170934-1-sdf@google.com

selftests/bpf: Test case for BPF_SOCK_OPS_TCP_LISTEN_CB

2018-07-14T22:08:41Z

Cover new TCP-BPF callback in test_tcpbpf: when listen() is called on socket, set BPF_SOCK_OPS_STATE_CB_FLAG so that BPF_SOCK_OPS_STATE_CB callback can be called on future state transition, and when such a transition happens (TCP_LISTEN -> TCP_CLOSE), track it in the map and verify it in user space later. Signed-off-by: Andrey Ignatov Acked-by: Alexei Starovoitov Signed-off-by: Daniel Borkmann

bpf: add selftest for tcpbpf

2018-01-26T00:41:15Z

Added a selftest for tcpbpf (sock_ops) that checks that the appropriate callbacks occured and that it can access tcp_sock fields and that their values are correct. Run with command: ./test_tcpbpf_user Adding the flag "-d" will show why it did not pass. Signed-off-by: Lawrence Brakmo Acked-by: Alexei Starovoitov Signed-off-by: Alexei Starovoitov