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// 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);
}
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