87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
// 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);
|
|
}
|