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

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

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/bpf/prog_tests/atomics.c
Extension
.c
Size
6098 bytes
Lines
205
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

#include <test_progs.h>

#include "atomics.lskel.h"

static void test_add(struct atomics_lskel *skel)
{
	int err, prog_fd;
	LIBBPF_OPTS(bpf_test_run_opts, topts);

	/* No need to attach it, just run it directly */
	prog_fd = skel->progs.add.prog_fd;
	err = bpf_prog_test_run_opts(prog_fd, &topts);
	if (!ASSERT_OK(err, "test_run_opts err"))
		return;
	if (!ASSERT_OK(topts.retval, "test_run_opts retval"))
		return;

	ASSERT_EQ(skel->data->add64_value, 3, "add64_value");
	ASSERT_EQ(skel->bss->add64_result, 1, "add64_result");

	ASSERT_EQ(skel->data->add32_value, 3, "add32_value");
	ASSERT_EQ(skel->bss->add32_result, 1, "add32_result");

	ASSERT_EQ(skel->bss->add_stack_value_copy, 3, "add_stack_value");
	ASSERT_EQ(skel->bss->add_stack_result, 1, "add_stack_result");

	ASSERT_EQ(skel->data->add_noreturn_value, 3, "add_noreturn_value");
}

static void test_sub(struct atomics_lskel *skel)
{
	int err, prog_fd;
	LIBBPF_OPTS(bpf_test_run_opts, topts);

	/* No need to attach it, just run it directly */
	prog_fd = skel->progs.sub.prog_fd;
	err = bpf_prog_test_run_opts(prog_fd, &topts);
	if (!ASSERT_OK(err, "test_run_opts err"))
		return;
	if (!ASSERT_OK(topts.retval, "test_run_opts retval"))
		return;

	ASSERT_EQ(skel->data->sub64_value, -1, "sub64_value");
	ASSERT_EQ(skel->bss->sub64_result, 1, "sub64_result");

	ASSERT_EQ(skel->data->sub32_value, -1, "sub32_value");
	ASSERT_EQ(skel->bss->sub32_result, 1, "sub32_result");

	ASSERT_EQ(skel->bss->sub_stack_value_copy, -1, "sub_stack_value");
	ASSERT_EQ(skel->bss->sub_stack_result, 1, "sub_stack_result");

	ASSERT_EQ(skel->data->sub_noreturn_value, -1, "sub_noreturn_value");
}

static void test_and(struct atomics_lskel *skel)
{
	int err, prog_fd;
	LIBBPF_OPTS(bpf_test_run_opts, topts);

	/* No need to attach it, just run it directly */
	prog_fd = skel->progs.and.prog_fd;
	err = bpf_prog_test_run_opts(prog_fd, &topts);
	if (!ASSERT_OK(err, "test_run_opts err"))
		return;
	if (!ASSERT_OK(topts.retval, "test_run_opts retval"))
		return;

	ASSERT_EQ(skel->data->and64_value, 0x010ull << 32, "and64_value");
	ASSERT_EQ(skel->bss->and64_result, 0x110ull << 32, "and64_result");

	ASSERT_EQ(skel->data->and32_value, 0x010, "and32_value");
	ASSERT_EQ(skel->bss->and32_result, 0x110, "and32_result");

	ASSERT_EQ(skel->data->and_noreturn_value, 0x010ull << 32, "and_noreturn_value");
}

static void test_or(struct atomics_lskel *skel)
{
	int err, prog_fd;
	LIBBPF_OPTS(bpf_test_run_opts, topts);

	/* No need to attach it, just run it directly */
	prog_fd = skel->progs.or.prog_fd;
	err = bpf_prog_test_run_opts(prog_fd, &topts);
	if (!ASSERT_OK(err, "test_run_opts err"))
		return;
	if (!ASSERT_OK(topts.retval, "test_run_opts retval"))
		return;

Annotation

Implementation Notes