87 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2/* Copyright (c) 2019 Facebook */3#include <test_progs.h>4#include <linux/bpf.h>5#include "bpf/libbpf_internal.h"6#include "test_raw_tp_test_run.skel.h"7 8void test_raw_tp_test_run(void)9{10 int comm_fd = -1, err, nr_online, i, prog_fd;11 __u64 args[2] = {0x1234ULL, 0x5678ULL};12 int expected_retval = 0x1234 + 0x5678;13 struct test_raw_tp_test_run *skel;14 char buf[] = "new_name";15 bool *online = NULL;16 LIBBPF_OPTS(bpf_test_run_opts, opts,17 .ctx_in = args,18 .ctx_size_in = sizeof(args),19 .flags = BPF_F_TEST_RUN_ON_CPU,20 );21 22 err = parse_cpu_mask_file("/sys/devices/system/cpu/online", &online,23 &nr_online);24 if (!ASSERT_OK(err, "parse_cpu_mask_file"))25 return;26 27 skel = test_raw_tp_test_run__open_and_load();28 if (!ASSERT_OK_PTR(skel, "skel_open"))29 goto cleanup;30 31 err = test_raw_tp_test_run__attach(skel);32 if (!ASSERT_OK(err, "skel_attach"))33 goto cleanup;34 35 comm_fd = open("/proc/self/comm", O_WRONLY|O_TRUNC);36 if (!ASSERT_GE(comm_fd, 0, "open /proc/self/comm"))37 goto cleanup;38 39 err = write(comm_fd, buf, sizeof(buf));40 ASSERT_GE(err, 0, "task rename");41 42 ASSERT_NEQ(skel->bss->count, 0, "check_count");43 ASSERT_EQ(skel->data->on_cpu, 0xffffffff, "check_on_cpu");44 45 prog_fd = bpf_program__fd(skel->progs.rename);46 opts.ctx_in = args;47 opts.ctx_size_in = sizeof(__u64);48 49 err = bpf_prog_test_run_opts(prog_fd, &opts);50 ASSERT_NEQ(err, 0, "test_run should fail for too small ctx");51 52 opts.ctx_size_in = sizeof(args);53 err = bpf_prog_test_run_opts(prog_fd, &opts);54 ASSERT_OK(err, "test_run");55 ASSERT_EQ(opts.retval, expected_retval, "check_retval");56 57 for (i = 0; i < nr_online; i++) {58 if (!online[i])59 continue;60 61 opts.cpu = i;62 opts.retval = 0;63 err = bpf_prog_test_run_opts(prog_fd, &opts);64 ASSERT_OK(err, "test_run_opts");65 ASSERT_EQ(skel->data->on_cpu, i, "check_on_cpu");66 ASSERT_EQ(opts.retval, expected_retval, "check_retval");67 }68 69 /* invalid cpu ID should fail with ENXIO */70 opts.cpu = 0xffffffff;71 err = bpf_prog_test_run_opts(prog_fd, &opts);72 ASSERT_EQ(errno, ENXIO, "test_run_opts should fail with ENXIO");73 ASSERT_ERR(err, "test_run_opts_fail");74 75 /* non-zero cpu w/o BPF_F_TEST_RUN_ON_CPU should fail with EINVAL */76 opts.cpu = 1;77 opts.flags = 0;78 err = bpf_prog_test_run_opts(prog_fd, &opts);79 ASSERT_EQ(errno, EINVAL, "test_run_opts should fail with EINVAL");80 ASSERT_ERR(err, "test_run_opts_fail");81 82cleanup:83 close(comm_fd);84 test_raw_tp_test_run__destroy(skel);85 free(online);86}87