tools/testing/selftests/bpf/progs/test_xdp_context_test_run.c

Source file repositories/reference/linux-study-clean/tools/testing/selftests/bpf/progs/test_xdp_context_test_run.c

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/bpf/progs/test_xdp_context_test_run.c
Extension
.c
Size
417 bytes
Lines
21
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 <linux/bpf.h>
#include <bpf/bpf_helpers.h>

SEC("xdp")
int xdp_context(struct xdp_md *xdp)
{
	void *data = (void *)(long)xdp->data;
	__u32 *metadata = (void *)(long)xdp->data_meta;
	__u32 ret;

	if (metadata + 1 > data)
		return XDP_ABORTED;
	ret = *metadata;
	if (bpf_xdp_adjust_meta(xdp, 4))
		return XDP_ABORTED;
	return ret;
}

char _license[] SEC("license") = "GPL";

Annotation

Implementation Notes