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