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