1// SPDX-License-Identifier: GPL-2.0
 2#include <linux/bpf.h>
 3#include <bpf/bpf_helpers.h>
 4
 5SEC("xdp")
 6int xdp_context(struct xdp_md *xdp)
 7{
 8	void *data = (void *)(long)xdp->data;
 9	__u32 *metadata = (void *)(long)xdp->data_meta;
10	__u32 ret;
11
12	if (metadata + 1 > data)
13		return XDP_ABORTED;
14	ret = *metadata;
15	if (bpf_xdp_adjust_meta(xdp, 4))
16		return XDP_ABORTED;
17	return ret;
18}
19
20char _license[] SEC("license") = "GPL";