79 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * Copyright (c) 2024 Meta Platforms, Inc. and affiliates.4 * Copyright (c) 2024 David Vernet <dvernet@meta.com>5 */6#include <bpf/bpf.h>7#include <sched.h>8#include <scx/common.h>9#include <sys/wait.h>10#include <unistd.h>11#include "prog_run.bpf.skel.h"12#include "scx_test.h"13 14static enum scx_test_status setup(void **ctx)15{16 struct prog_run *skel;17 18 skel = prog_run__open_and_load();19 if (!skel) {20 SCX_ERR("Failed to open and load skel");21 return SCX_TEST_FAIL;22 }23 *ctx = skel;24 25 return SCX_TEST_PASS;26}27 28static enum scx_test_status run(void *ctx)29{30 struct prog_run *skel = ctx;31 struct bpf_link *link;32 int prog_fd, err = 0;33 34 prog_fd = bpf_program__fd(skel->progs.prog_run_syscall);35 if (prog_fd < 0) {36 SCX_ERR("Failed to get BPF_PROG_RUN prog");37 return SCX_TEST_FAIL;38 }39 40 LIBBPF_OPTS(bpf_test_run_opts, topts);41 42 link = bpf_map__attach_struct_ops(skel->maps.prog_run_ops);43 if (!link) {44 SCX_ERR("Failed to attach scheduler");45 close(prog_fd);46 return SCX_TEST_FAIL;47 }48 49 err = bpf_prog_test_run_opts(prog_fd, &topts);50 SCX_EQ(err, 0);51 52 /* Assumes uei.kind is written last */53 while (skel->data->uei.kind == EXIT_KIND(SCX_EXIT_NONE))54 sched_yield();55 56 SCX_EQ(skel->data->uei.kind, EXIT_KIND(SCX_EXIT_UNREG_BPF));57 SCX_EQ(skel->data->uei.exit_code, 0xdeadbeef);58 close(prog_fd);59 bpf_link__destroy(link);60 61 return SCX_TEST_PASS;62}63 64static void cleanup(void *ctx)65{66 struct prog_run *skel = ctx;67 68 prog_run__destroy(skel);69}70 71struct scx_test prog_run = {72 .name = "prog_run",73 .description = "Verify we can call into a scheduler with BPF_PROG_RUN, and invoke kfuncs",74 .setup = setup,75 .run = run,76 .cleanup = cleanup,77};78REGISTER_SCX_TEST(&prog_run)79