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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2024 Meta Platforms, Inc. and affiliates.
* Copyright (c) 2024 David Vernet <dvernet@meta.com>
*/
#include <bpf/bpf.h>
#include <sched.h>
#include <scx/common.h>
#include <sys/wait.h>
#include <unistd.h>
#include "prog_run.bpf.skel.h"
#include "scx_test.h"
static enum scx_test_status setup(void **ctx)
{
struct prog_run *skel;
skel = prog_run__open();
SCX_FAIL_IF(!skel, "Failed to open");
SCX_ENUM_INIT(skel);
SCX_FAIL_IF(prog_run__load(skel), "Failed to load skel");
*ctx = skel;
return SCX_TEST_PASS;
}
static enum scx_test_status run(void *ctx)
{
struct prog_run *skel = ctx;
struct bpf_link *link;
int prog_fd, err = 0;
prog_fd = bpf_program__fd(skel->progs.prog_run_syscall);
if (prog_fd < 0) {
SCX_ERR("Failed to get BPF_PROG_RUN prog");
return SCX_TEST_FAIL;
}
LIBBPF_OPTS(bpf_test_run_opts, topts);
link = bpf_map__attach_struct_ops(skel->maps.prog_run_ops);
if (!link) {
SCX_ERR("Failed to attach scheduler");
close(prog_fd);
return SCX_TEST_FAIL;
}
err = bpf_prog_test_run_opts(prog_fd, &topts);
SCX_EQ(err, 0);
/* Assumes uei.kind is written last */
while (skel->data->uei.kind == EXIT_KIND(SCX_EXIT_NONE))
sched_yield();
SCX_EQ(skel->data->uei.kind, EXIT_KIND(SCX_EXIT_UNREG_BPF));
SCX_EQ(skel->data->uei.exit_code, 0xdeadbeef);
close(prog_fd);
bpf_link__destroy(link);
return SCX_TEST_PASS;
}
static void cleanup(void *ctx)
{
struct prog_run *skel = ctx;
prog_run__destroy(skel);
}
struct scx_test prog_run = {
.name = "prog_run",
.description = "Verify we can call into a scheduler with BPF_PROG_RUN, and invoke kfuncs",
.setup = setup,
.run = run,
.cleanup = cleanup,
};
REGISTER_SCX_TEST(&prog_run)
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