diff options
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/raw_tp_writable_test_run.c')
-rw-r--r-- | tools/testing/selftests/bpf/prog_tests/raw_tp_writable_test_run.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/raw_tp_writable_test_run.c b/tools/testing/selftests/bpf/prog_tests/raw_tp_writable_test_run.c new file mode 100644 index 0000000000..f4aa7dab47 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/raw_tp_writable_test_run.c @@ -0,0 +1,82 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <test_progs.h> +#include <linux/nbd.h> + +/* NOTE: conflict with other tests. */ +void serial_test_raw_tp_writable_test_run(void) +{ + __u32 duration = 0; + char error[4096]; + + const struct bpf_insn trace_program[] = { + BPF_LDX_MEM(BPF_DW, BPF_REG_6, BPF_REG_1, 0), + BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_6, 0), + BPF_MOV64_IMM(BPF_REG_0, 42), + BPF_STX_MEM(BPF_W, BPF_REG_6, BPF_REG_0, 0), + BPF_EXIT_INSN(), + }; + + LIBBPF_OPTS(bpf_prog_load_opts, trace_opts, + .log_level = 2, + .log_buf = error, + .log_size = sizeof(error), + ); + + int bpf_fd = bpf_prog_load(BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, NULL, "GPL v2", + trace_program, sizeof(trace_program) / sizeof(struct bpf_insn), + &trace_opts); + if (CHECK(bpf_fd < 0, "bpf_raw_tracepoint_writable loaded", + "failed: %d errno %d\n", bpf_fd, errno)) + return; + + const struct bpf_insn skb_program[] = { + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }; + + LIBBPF_OPTS(bpf_prog_load_opts, skb_opts, + .log_buf = error, + .log_size = sizeof(error), + ); + + int filter_fd = bpf_prog_load(BPF_PROG_TYPE_SOCKET_FILTER, NULL, "GPL v2", + skb_program, sizeof(skb_program) / sizeof(struct bpf_insn), + &skb_opts); + if (CHECK(filter_fd < 0, "test_program_loaded", "failed: %d errno %d\n", + filter_fd, errno)) + goto out_bpffd; + + int tp_fd = bpf_raw_tracepoint_open("bpf_test_finish", bpf_fd); + if (CHECK(tp_fd < 0, "bpf_raw_tracepoint_writable opened", + "failed: %d errno %d\n", tp_fd, errno)) + goto out_filterfd; + + char test_skb[128] = { + 0, + }; + + LIBBPF_OPTS(bpf_test_run_opts, topts, + .data_in = test_skb, + .data_size_in = sizeof(test_skb), + .repeat = 1, + ); + int err = bpf_prog_test_run_opts(filter_fd, &topts); + CHECK(err != 42, "test_run", + "tracepoint did not modify return value\n"); + CHECK(topts.retval != 0, "test_run_ret", + "socket_filter did not return 0\n"); + + close(tp_fd); + + err = bpf_prog_test_run_opts(filter_fd, &topts); + CHECK(err != 0, "test_run_notrace", + "test_run failed with %d errno %d\n", err, errno); + CHECK(topts.retval != 0, "test_run_ret_notrace", + "socket_filter did not return 0\n"); + +out_filterfd: + close(filter_fd); +out_bpffd: + close(bpf_fd); +} |