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

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

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/bpf/progs/lwt_misc.c
Extension
.c
Size
424 bytes
Lines
23
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 "vmlinux.h"
#include <bpf/bpf_helpers.h>
#include "bpf_misc.h"

SEC("lwt_xmit")
__success __retval(0)
int test_missing_dst(struct __sk_buff *skb)
{
	struct iphdr iph;

	__builtin_memset(&iph, 0, sizeof(struct iphdr));
	iph.ihl = 5;
	iph.version = 4;

	bpf_lwt_push_encap(skb, BPF_LWT_ENCAP_IP, &iph, sizeof(struct iphdr));

	return 0;
}

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

Annotation

Implementation Notes