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 int i = 0; 17 18 while (true) { 19 if (PT_REGS_RC(ctx) & 1) 20 i += 3; 21 else 22 i += 7; 23 if (i > 40) 24 break; 25 } 26 27 return i; 28 } 29