1// SPDX-License-Identifier: GPL-2.0
 2// Copyright (c) 2019 Facebook
 3#include <linux/sched.h>
 4#include <linux/ptrace.h>
 5#include <stdint.h>
 6#include <stddef.h>
 7#include <stdbool.h>
 8#include <linux/bpf.h>
 9#include "bpf_helpers.h"
10
11char _license[] SEC("license") = "GPL";
12
13SEC("raw_tracepoint/consume_skb")
14int while_true(volatile struct pt_regs* ctx)
15{
16	__u64 i = 0, sum = 0;
17	do {
18		i++;
19		sum += PT_REGS_RC(ctx);
20	} while (i < 0x100000000ULL);
21	return sum;
22}