diff options
Diffstat (limited to '')
-rw-r--r-- | tools/testing/selftests/bpf/prog_tests/raw_tp_test_run.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/raw_tp_test_run.c b/tools/testing/selftests/bpf/prog_tests/raw_tp_test_run.c new file mode 100644 index 000000000000..fe5b8fae2c36 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/raw_tp_test_run.c @@ -0,0 +1,86 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* Copyright (c) 2019 Facebook */ +#include <test_progs.h> +#include <linux/bpf.h> +#include "bpf/libbpf_internal.h" +#include "test_raw_tp_test_run.skel.h" + +void test_raw_tp_test_run(void) +{ + int comm_fd = -1, err, nr_online, i, prog_fd; + __u64 args[2] = {0x1234ULL, 0x5678ULL}; + int expected_retval = 0x1234 + 0x5678; + struct test_raw_tp_test_run *skel; + char buf[] = "new_name"; + bool *online = NULL; + LIBBPF_OPTS(bpf_test_run_opts, opts, + .ctx_in = args, + .ctx_size_in = sizeof(args), + .flags = BPF_F_TEST_RUN_ON_CPU, + ); + + err = parse_cpu_mask_file("/sys/devices/system/cpu/online", &online, + &nr_online); + if (!ASSERT_OK(err, "parse_cpu_mask_file")) + return; + + skel = test_raw_tp_test_run__open_and_load(); + if (!ASSERT_OK_PTR(skel, "skel_open")) + goto cleanup; + + err = test_raw_tp_test_run__attach(skel); + if (!ASSERT_OK(err, "skel_attach")) + goto cleanup; + + comm_fd = open("/proc/self/comm", O_WRONLY|O_TRUNC); + if (!ASSERT_GE(comm_fd, 0, "open /proc/self/comm")) + goto cleanup; + + err = write(comm_fd, buf, sizeof(buf)); + ASSERT_GE(err, 0, "task rename"); + + ASSERT_NEQ(skel->bss->count, 0, "check_count"); + ASSERT_EQ(skel->data->on_cpu, 0xffffffff, "check_on_cpu"); + + prog_fd = bpf_program__fd(skel->progs.rename); + opts.ctx_in = args; + opts.ctx_size_in = sizeof(__u64); + + err = bpf_prog_test_run_opts(prog_fd, &opts); + ASSERT_NEQ(err, 0, "test_run should fail for too small ctx"); + + opts.ctx_size_in = sizeof(args); + err = bpf_prog_test_run_opts(prog_fd, &opts); + ASSERT_OK(err, "test_run"); + ASSERT_EQ(opts.retval, expected_retval, "check_retval"); + + for (i = 0; i < nr_online; i++) { + if (!online[i]) + continue; + + opts.cpu = i; + opts.retval = 0; + err = bpf_prog_test_run_opts(prog_fd, &opts); + ASSERT_OK(err, "test_run_opts"); + ASSERT_EQ(skel->data->on_cpu, i, "check_on_cpu"); + ASSERT_EQ(opts.retval, expected_retval, "check_retval"); + } + + /* invalid cpu ID should fail with ENXIO */ + opts.cpu = 0xffffffff; + err = bpf_prog_test_run_opts(prog_fd, &opts); + ASSERT_EQ(errno, ENXIO, "test_run_opts should fail with ENXIO"); + ASSERT_ERR(err, "test_run_opts_fail"); + + /* non-zero cpu w/o BPF_F_TEST_RUN_ON_CPU should fail with EINVAL */ + opts.cpu = 1; + opts.flags = 0; + err = bpf_prog_test_run_opts(prog_fd, &opts); + ASSERT_EQ(errno, EINVAL, "test_run_opts should fail with EINVAL"); + ASSERT_ERR(err, "test_run_opts_fail"); + +cleanup: + close(comm_fd); + test_raw_tp_test_run__destroy(skel); + free(online); +} |