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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_and_load(); if (!skel) { SCX_ERR("Failed to open and load skel"); return SCX_TEST_FAIL; } *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)