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 7 struct ipv_counts { 8 unsigned int v4; 9 unsigned int v6; 10 }; 11 12 struct bpf_map_def SEC("maps") btf_map = { 13 .type = BPF_MAP_TYPE_ARRAY, 14 .key_size = sizeof(int), 15 .value_size = sizeof(struct ipv_counts), 16 .max_entries = 4, 17 }; 18 19 BPF_ANNOTATE_KV_PAIR(btf_map, int, struct ipv_counts); 20 21 __attribute__((noinline)) test_long_fname_2(void)22int test_long_fname_2(void) 23 { 24 struct ipv_counts *counts; 25 int key = 0; 26 27 counts = bpf_map_lookup_elem(&btf_map, &key); 28 if (!counts) 29 return 0; 30 31 counts->v6++; 32 33 return 0; 34 } 35 36 __attribute__((noinline)) test_long_fname_1(void)37int test_long_fname_1(void) 38 { 39 return test_long_fname_2(); 40 } 41 42 SEC("dummy_tracepoint") _dummy_tracepoint(void * arg)43int _dummy_tracepoint(void *arg) 44 { 45 return test_long_fname_1(); 46 } 47 48 char _license[] SEC("license") = "GPL"; 49