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/bpf_helpers.h>
10#include <bpf/bpf_tracing.h>
11
12char _license[] SEC("license") = "GPL";
13
14SEC("raw_tracepoint/consume_skb")
15int while_true(volatile struct pt_regs* ctx)
16{
17	__u64 i = 0, sum = 0;
18	do {
19		i++;
20		sum += PT_REGS_RC(ctx);
21	} while (i < 0x100000000ULL);
22	return sum;
23}