30 lines · c
1// SPDX-License-Identifier: GPL-2.02// Copyright (c) 2019 Facebook3#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 int i = 0;18 19 while (true) {20 if (PT_REGS_RC(ctx) & 1)21 i += 3;22 else23 i += 7;24 if (i > 40)25 break;26 }27 28 return i;29}30