diff options
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/tcpbpf_user.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/tcpbpf_user.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/tcpbpf_user.c b/tools/testing/selftests/bpf/prog_tests/tcpbpf_user.c new file mode 100644 index 000000000..7e8fe1bad --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/tcpbpf_user.c @@ -0,0 +1,137 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <test_progs.h> +#include <network_helpers.h> + +#include "test_tcpbpf.h" +#include "test_tcpbpf_kern.skel.h" + +#define LO_ADDR6 "::1" +#define CG_NAME "/tcpbpf-user-test" + +static void verify_result(struct tcpbpf_globals *result) +{ + __u32 expected_events = ((1 << BPF_SOCK_OPS_TIMEOUT_INIT) | + (1 << BPF_SOCK_OPS_RWND_INIT) | + (1 << BPF_SOCK_OPS_TCP_CONNECT_CB) | + (1 << BPF_SOCK_OPS_ACTIVE_ESTABLISHED_CB) | + (1 << BPF_SOCK_OPS_PASSIVE_ESTABLISHED_CB) | + (1 << BPF_SOCK_OPS_NEEDS_ECN) | + (1 << BPF_SOCK_OPS_STATE_CB) | + (1 << BPF_SOCK_OPS_TCP_LISTEN_CB)); + + /* check global map */ + ASSERT_EQ(expected_events, result->event_map, "event_map"); + + ASSERT_EQ(result->bytes_received, 501, "bytes_received"); + ASSERT_EQ(result->bytes_acked, 1002, "bytes_acked"); + ASSERT_EQ(result->data_segs_in, 1, "data_segs_in"); + ASSERT_EQ(result->data_segs_out, 1, "data_segs_out"); + ASSERT_EQ(result->bad_cb_test_rv, 0x80, "bad_cb_test_rv"); + ASSERT_EQ(result->good_cb_test_rv, 0, "good_cb_test_rv"); + ASSERT_EQ(result->num_listen, 1, "num_listen"); + + /* 3 comes from one listening socket + both ends of the connection */ + ASSERT_EQ(result->num_close_events, 3, "num_close_events"); + + /* check setsockopt for SAVE_SYN */ + ASSERT_EQ(result->tcp_save_syn, 0, "tcp_save_syn"); + + /* check getsockopt for SAVED_SYN */ + ASSERT_EQ(result->tcp_saved_syn, 1, "tcp_saved_syn"); + + /* check getsockopt for window_clamp */ + ASSERT_EQ(result->window_clamp_client, 9216, "window_clamp_client"); + ASSERT_EQ(result->window_clamp_server, 9216, "window_clamp_server"); +} + +static void run_test(struct tcpbpf_globals *result) +{ + int listen_fd = -1, cli_fd = -1, accept_fd = -1; + char buf[1000]; + int err = -1; + int i, rv; + + listen_fd = start_server(AF_INET6, SOCK_STREAM, LO_ADDR6, 0, 0); + if (!ASSERT_NEQ(listen_fd, -1, "start_server")) + goto done; + + cli_fd = connect_to_fd(listen_fd, 0); + if (!ASSERT_NEQ(cli_fd, -1, "connect_to_fd(listen_fd)")) + goto done; + + accept_fd = accept(listen_fd, NULL, NULL); + if (!ASSERT_NEQ(accept_fd, -1, "accept(listen_fd)")) + goto done; + + /* Send 1000B of '+'s from cli_fd -> accept_fd */ + for (i = 0; i < 1000; i++) + buf[i] = '+'; + + rv = send(cli_fd, buf, 1000, 0); + if (!ASSERT_EQ(rv, 1000, "send(cli_fd)")) + goto done; + + rv = recv(accept_fd, buf, 1000, 0); + if (!ASSERT_EQ(rv, 1000, "recv(accept_fd)")) + goto done; + + /* Send 500B of '.'s from accept_fd ->cli_fd */ + for (i = 0; i < 500; i++) + buf[i] = '.'; + + rv = send(accept_fd, buf, 500, 0); + if (!ASSERT_EQ(rv, 500, "send(accept_fd)")) + goto done; + + rv = recv(cli_fd, buf, 500, 0); + if (!ASSERT_EQ(rv, 500, "recv(cli_fd)")) + goto done; + + /* + * shutdown accept first to guarantee correct ordering for + * bytes_received and bytes_acked when we go to verify the results. + */ + shutdown(accept_fd, SHUT_WR); + err = recv(cli_fd, buf, 1, 0); + if (!ASSERT_OK(err, "recv(cli_fd) for fin")) + goto done; + + shutdown(cli_fd, SHUT_WR); + err = recv(accept_fd, buf, 1, 0); + ASSERT_OK(err, "recv(accept_fd) for fin"); +done: + if (accept_fd != -1) + close(accept_fd); + if (cli_fd != -1) + close(cli_fd); + if (listen_fd != -1) + close(listen_fd); + + if (!err) + verify_result(result); +} + +void test_tcpbpf_user(void) +{ + struct test_tcpbpf_kern *skel; + int cg_fd = -1; + + skel = test_tcpbpf_kern__open_and_load(); + if (!ASSERT_OK_PTR(skel, "open and load skel")) + return; + + cg_fd = test__join_cgroup(CG_NAME); + if (!ASSERT_GE(cg_fd, 0, "test__join_cgroup(" CG_NAME ")")) + goto err; + + skel->links.bpf_testcb = bpf_program__attach_cgroup(skel->progs.bpf_testcb, cg_fd); + if (!ASSERT_OK_PTR(skel->links.bpf_testcb, "attach_cgroup(bpf_testcb)")) + goto err; + + run_test(&skel->bss->global); + +err: + if (cg_fd != -1) + close(cg_fd); + test_tcpbpf_kern__destroy(skel); +} |