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