tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c

Source file repositories/reference/linux-study-clean/tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/bpf/prog_tests/bpf_verif_scale.c
Extension
.c
Size
5268 bytes
Lines
234
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2019 Facebook
#include <test_progs.h>
static int libbpf_debug_print(enum libbpf_print_level level,
			      const char *format, va_list args)
{
	if (level != LIBBPF_DEBUG) {
		vprintf(format, args);
		return 0;
	}

	if (!strstr(format, "verifier log"))
		return 0;
	vprintf("%s", args);
	return 0;
}

extern int extra_prog_load_log_flags;

static int check_load(const char *file, enum bpf_prog_type type)
{
	struct bpf_object *obj = NULL;
	struct bpf_program *prog;
	int err;

	obj = bpf_object__open_file(file, NULL);
	err = libbpf_get_error(obj);
	if (err)
		return err;

	prog = bpf_object__next_program(obj, NULL);
	if (!prog) {
		err = -ENOENT;
		goto err_out;
	}

	bpf_program__set_type(prog, type);
	bpf_program__set_flags(prog, testing_prog_flags());
	bpf_program__set_log_level(prog, 4 | extra_prog_load_log_flags);

	err = bpf_object__load(obj);

err_out:
	bpf_object__close(obj);
	return err;
}

static void scale_test(const char *file,
		       enum bpf_prog_type attach_type,
		       bool should_fail)
{
	libbpf_print_fn_t old_print_fn = NULL;
	int err;

	if (env.verifier_stats) {
		test__force_log();
		old_print_fn = libbpf_set_print(libbpf_debug_print);
	}

	err = check_load(file, attach_type);
	if (should_fail)
		ASSERT_ERR(err, "expect_error");
	else
		ASSERT_OK(err, "expect_success");

	if (env.verifier_stats)
		libbpf_set_print(old_print_fn);
}

void test_verif_scale1()
{
	scale_test("test_verif_scale1.bpf.o", BPF_PROG_TYPE_SCHED_CLS, false);
}

void test_verif_scale2()
{
	scale_test("test_verif_scale2.bpf.o", BPF_PROG_TYPE_SCHED_CLS, false);
}

void test_verif_scale3()
{
	scale_test("test_verif_scale3.bpf.o", BPF_PROG_TYPE_SCHED_CLS, false);
}

void test_verif_scale_pyperf_global()
{
	scale_test("pyperf_global.bpf.o", BPF_PROG_TYPE_RAW_TRACEPOINT, false);
}

void test_verif_scale_pyperf_subprogs()

Annotation

Implementation Notes