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 int _version SEC("version") = 1; 8 9 struct ipv_counts { 10 unsigned int v4; 11 unsigned int v6; 12 }; 13 14 struct 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 21 BPF_ANNOTATE_KV_PAIR(btf_map, int, struct ipv_counts); 22 23 __attribute__((noinline)) test_long_fname_2(void)24int test_long_fname_2(void) 25 { 26 struct ipv_counts *counts; 27 int key = 0; 28 29 counts = bpf_map_lookup_elem(&btf_map, &key); 30 if (!counts) 31 return 0; 32 33 counts->v6++; 34 35 return 0; 36 } 37 38 __attribute__((noinline)) test_long_fname_1(void)39int test_long_fname_1(void) 40 { 41 return test_long_fname_2(); 42 } 43 44 SEC("dummy_tracepoint") _dummy_tracepoint(void * arg)45int _dummy_tracepoint(void *arg) 46 { 47 return test_long_fname_1(); 48 } 49 50 char _license[] SEC("license") = "GPL"; 51