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 
11 char _license[] SEC("license") = "GPL";
12 
13 SEC("raw_tracepoint/consume_skb")
14 int 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 }
23