// SPDX-License-Identifier: GPL-2.0-only
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/* Copyright (c) 2019 Facebook */
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#include <test_progs.h>
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#include <linux/bpf.h>
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#include "bpf/libbpf_internal.h"
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#include "test_raw_tp_test_run.skel.h"
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static int duration;
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void test_raw_tp_test_run(void)
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{
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struct bpf_prog_test_run_attr test_attr = {};
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int comm_fd = -1, err, nr_online, i, prog_fd;
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__u64 args[2] = {0x1234ULL, 0x5678ULL};
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int expected_retval = 0x1234 + 0x5678;
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struct test_raw_tp_test_run *skel;
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char buf[] = "new_name";
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bool *online = NULL;
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DECLARE_LIBBPF_OPTS(bpf_test_run_opts, opts,
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.ctx_in = args,
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.ctx_size_in = sizeof(args),
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.flags = BPF_F_TEST_RUN_ON_CPU,
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);
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err = parse_cpu_mask_file("/sys/devices/system/cpu/online", &online,
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&nr_online);
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if (CHECK(err, "parse_cpu_mask_file", "err %d\n", err))
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return;
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skel = test_raw_tp_test_run__open_and_load();
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if (CHECK(!skel, "skel_open", "failed to open skeleton\n"))
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goto cleanup;
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err = test_raw_tp_test_run__attach(skel);
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if (CHECK(err, "skel_attach", "skeleton attach failed: %d\n", err))
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goto cleanup;
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comm_fd = open("/proc/self/comm", O_WRONLY|O_TRUNC);
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if (CHECK(comm_fd < 0, "open /proc/self/comm", "err %d\n", errno))
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goto cleanup;
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err = write(comm_fd, buf, sizeof(buf));
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CHECK(err < 0, "task rename", "err %d", errno);
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CHECK(skel->bss->count == 0, "check_count", "didn't increase\n");
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CHECK(skel->data->on_cpu != 0xffffffff, "check_on_cpu", "got wrong value\n");
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prog_fd = bpf_program__fd(skel->progs.rename);
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test_attr.prog_fd = prog_fd;
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test_attr.ctx_in = args;
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test_attr.ctx_size_in = sizeof(__u64);
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err = bpf_prog_test_run_xattr(&test_attr);
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CHECK(err == 0, "test_run", "should fail for too small ctx\n");
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test_attr.ctx_size_in = sizeof(args);
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err = bpf_prog_test_run_xattr(&test_attr);
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CHECK(err < 0, "test_run", "err %d\n", errno);
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CHECK(test_attr.retval != expected_retval, "check_retval",
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"expect 0x%x, got 0x%x\n", expected_retval, test_attr.retval);
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for (i = 0; i < nr_online; i++) {
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if (!online[i])
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continue;
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opts.cpu = i;
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opts.retval = 0;
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err = bpf_prog_test_run_opts(prog_fd, &opts);
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CHECK(err < 0, "test_run_opts", "err %d\n", errno);
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CHECK(skel->data->on_cpu != i, "check_on_cpu",
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"expect %d got %d\n", i, skel->data->on_cpu);
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CHECK(opts.retval != expected_retval,
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"check_retval", "expect 0x%x, got 0x%x\n",
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expected_retval, opts.retval);
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}
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/* invalid cpu ID should fail with ENXIO */
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opts.cpu = 0xffffffff;
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err = bpf_prog_test_run_opts(prog_fd, &opts);
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CHECK(err != -1 || errno != ENXIO,
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"test_run_opts_fail",
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"should failed with ENXIO\n");
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/* non-zero cpu w/o BPF_F_TEST_RUN_ON_CPU should fail with EINVAL */
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opts.cpu = 1;
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opts.flags = 0;
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err = bpf_prog_test_run_opts(prog_fd, &opts);
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CHECK(err != -1 || errno != EINVAL,
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"test_run_opts_fail",
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"should failed with EINVAL\n");
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cleanup:
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close(comm_fd);
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test_raw_tp_test_run__destroy(skel);
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free(online);
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}
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