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

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

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/bpf/prog_tests/skb_helpers.c
Extension
.c
Size
691 bytes
Lines
31
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 <network_helpers.h>

void test_skb_helpers(void)
{
	struct __sk_buff skb = {
		.wire_len = 100,
		.gso_segs = 8,
		.gso_size = 10,
	};
	LIBBPF_OPTS(bpf_test_run_opts, topts,
		.data_in = &pkt_v4,
		.data_size_in = sizeof(pkt_v4),
		.ctx_in = &skb,
		.ctx_size_in = sizeof(skb),
		.ctx_out = &skb,
		.ctx_size_out = sizeof(skb),
	);
	struct bpf_object *obj;
	int err, prog_fd;

	err = bpf_prog_test_load("./test_skb_helpers.bpf.o",
				 BPF_PROG_TYPE_SCHED_CLS, &obj, &prog_fd);
	if (!ASSERT_OK(err, "load"))
		return;
	err = bpf_prog_test_run_opts(prog_fd, &topts);
	ASSERT_OK(err, "test_run");
	bpf_object__close(obj);
}

Annotation

Implementation Notes