1/* SPDX-License-Identifier: GPL-2.0 */ 2/* Copyright (c) 2018 Facebook */ 3#include <linux/bpf.h> 4#include <bpf/bpf_helpers.h> 5#include "bpf_legacy.h" 6 7int _version SEC("version") = 1; 8 9struct ipv_counts { 10 unsigned int v4; 11 unsigned int v6; 12}; 13 14struct bpf_map_def SEC("maps") btf_map = { 15 .type = BPF_MAP_TYPE_ARRAY, 16 .key_size = sizeof(int), 17 .value_size = sizeof(struct ipv_counts), 18 .max_entries = 4, 19}; 20 21BPF_ANNOTATE_KV_PAIR(btf_map, int, struct ipv_counts); 22 23struct dummy_tracepoint_args { 24 unsigned long long pad; 25 struct sock *sock; 26}; 27 28__attribute__((noinline)) 29int test_long_fname_2(struct dummy_tracepoint_args *arg) 30{ 31 struct ipv_counts *counts; 32 int key = 0; 33 34 if (!arg->sock) 35 return 0; 36 37 counts = bpf_map_lookup_elem(&btf_map, &key); 38 if (!counts) 39 return 0; 40 41 counts->v6++; 42 43 return 0; 44} 45 46__attribute__((noinline)) 47int test_long_fname_1(struct dummy_tracepoint_args *arg) 48{ 49 return test_long_fname_2(arg); 50} 51 52SEC("dummy_tracepoint") 53int _dummy_tracepoint(struct dummy_tracepoint_args *arg) 54{ 55 return test_long_fname_1(arg); 56} 57 58char _license[] SEC("license") = "GPL"; 59